The State Office of Miners Health Safety and Training is investigating an electrocution at Aracoma Coal's Alma No. 1 Mine, the same Logan County Mine where two miners died in a 2006 belt line fire.
Agency Spokeswoman Jama Jarrett identified the latest victim as 24-year-old Nathan Dove of Chattaroy.
Jarrett says the underground electrician was repairing a shuttle car when Friday night's accident occurred. The cause isn't yet known.
A call to a spokesman for Richmond, Va.-based Massey Energy, Aracoma Coal's Parent Company, wasn't immediately returned Saturday.
Last month, the Federal Mine Safety and Health Administration presented the mine with a safety award.
Dove's death marks West Virginia's second coal mine-related death of 2008 and the nation's ninth.