Xiaojiawan coal mine disaster was a mining accident which happened on 29 August 2012 at the Xiaojiawan coal mine ( ) , located in Panzhihua in Sichuan Province , China . It was the deadliest mine accident since the 2009 Heilongjiang mine explosion . As a result of a gas explosion in the Xiaojiawan coal mine , at least 45 miners were killed and 1 was still missing as of September 2 . 51 were sent to hospital with seven in critical condition . It was reported that 16 miners died from carbon monoxide poisoning , while three others died in hospital
2009 Heilongjiang mine explosion
2009 Heilongjiang mine explosion
Xiaojiawan coal mine disaster