Rescuers worked to save 31 coal miners trapped underground by a flood early Monday in northern China, state media reported. Rescuers pumped water from the Mt. Camel Coal Mine in Wuhai city in the northern region of Inner Mongolia, where the flood trapped the miners earlier in the day, the official Xinhua News Agency said. An initial investigation showed 46 of the 77 miners working in the flooded pit were rescued and 31 remain trapped, it said.