At least 17 miners remain trapped after a coal mine gas blast in Xinjiang on Saturday night. Rescuers are pouring nitrogen into the mine to dilute the gas concentration. The process, which was started early on Sunday morning, needs to be continued for 24 hours before it is safe to enter the pit, Xinhua quoted rescuers as saying. The blast happened at 8:43 p.m. on Saturday, when 20 people were working inside the mine. Three of them have been rescued.