Rescuers return to the surface after conducting rescue missions in flooded Zhaojin Coal Mine in Tongchuan City, northwest China's Shaanxi Province, April 28, 2016. Rescuers have found two miners' bodies in the flooded colliery, but nine remain missing more than 75 hours after the flood. The mine flooded on Monday morning, when 67 miners were underground. Fifty-six of them managed to escape. (Xinhua/Shao Rui)