Ten employees of a coal company died in northwestern China on Saturday when a mountainside slope collapsed on them, state media reported. Rescuers spent all day to retrieve the workers who were buried in their vehicle en route to a mine site in Jingtai county in Gansu province, CCTV reported. Read: Mountain collapses on township in China's remote southwest, killing two Ten died and seven were found alive with light injuries. Operations stopped around 8 p.m. Saturday The workers were employed by Shanxi Coking Coal Minbao group. An investigation into the incident was underway.