Search suspended for 50 missing in China mine collapse


              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers talk to a truck driver at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A truck is stopped at a checkpoint leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              A trailer loaded with bulldozers is stopped at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              People gather at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers gesture to a truck at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              In this aerial photo released by China's Xinhua News Agency, rescue vehicles are parked near the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Lian Zhen/Xinhua via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this aerial photo released by China's Xinhua News Agency, rescuers work at the site of a collapsed open pit coal mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (Bei He/Xinhua via AP)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road leading to the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              In this image taken from official surveillance camera footage run by China's CCTV, dirt moves down the side of a hill at an open pit mine in Alxa League in northernChina's Inner Mongolia Autonomous Region, Wednesday, Feb. 22, 2023. An open pit mine collapsed in China's Inner Mongolia Autonomous Region on Wednesday, killing several people and leaving dozens missing, state media reported. (CCTV via AP)
            
              Police officers stand at a checkpoint along a road near the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)
            
              Police officers stand at a checkpoint along a road near the site of a collapsed open pit mine in Alxa League in northern China's Inner Mongolia Autonomous Region, Thursday, Feb. 23, 2023. An open pit mine collapsed in China's northern Inner Mongolia region on Wednesday, killing multiple people and leaving dozens more missing, state media reported. (AP Photo/Ng Han Guan)