Federal investigators on Wednesday said Massey Energy, the owner of the West Virginia coal mine where more than 29 workers were killed last year, kept two sets of safety records: one for the people working in the mine, another to mislead federal inspectors who came to check on the operation. NBC's T
Miners employed by Massey Energy said Wednesday that the company's lax approach to safety led to the tragedy at Upper Big Branch Mine. NBC's Tom Costello reports.
Mine helmets and painted crosses sit at the entrance to Massey Energy's Upper Big Branch coal mine Tuesday, April 5, 2011 in Montcoal, W.Va. The memorial represents the 29 coal miners who were killed in an explosion at the mine one year ago today.