At least eight people were killed and another eight missing after an accident took place in a coal mine in the Chinese city of Pingdingshan in Henan province, Xinhua reported citing local authorities on Friday. A total of 425 people were inside the coal mine of the Pingdingshan Tianan Coal Mining Co., Ltd. when the incident happened at 2:55 pm on Friday. Xinhua reported that 380 of the trapped miners were extracted safely while preliminary investigation revealed that the accident was caused by a coal and gas outburst.