Rescuers prepare to go down the coal mine after a gas explosion in Shizuishan, northwest China's Ningxia Hui Autonomous Region, Sept. 27, 2016. Twelve people died in the gas explosion which occurred on Tuesday morning at a small coal mine belonging to Linli Coal Mining Co. Ltd. in Shizuishan City. Eight more remain trapped under ground. (Xinhua/Wang Peng)