A massive gas explosion at the Liushenyu coal mine in Shanxi province has claimed the lives of 82 workers, marking the deadliest mining disaster in China in nearly two decades.Chinese authorities have detained company officials from Shanxi Tongzhou Coal & Coke Group as Xi Jinping mandates an exhaustive investigation into regulatory safety failures.Rescue teams remain on site searching for two missing miners after hundreds of personnel were deployed to assist the 128 survivors hospitalized following the Friday evening blast.