A coal mine flood in northeastern China has left 13 miners missing for three days, Xinhua agency said today.
The flood happened early on Saturday in Jixi, Heilongjiang province and rescuers were pumping water out of the pit as fast as possible, it said.
China, the world's largest producer and consumer of coal and home to the world's deadliest mining industry, has been trying to improve safety, but accidents are common as owners push production beyond safety limits to meet robust demand.
Nearly 4,000 miners died in Chinese coal mines in 2007, 20 per cent down from the previous year.