The security chief at Massey Energy’s Upper Big Branch mine in in West Virginia has been arrested on charges of trying to block a federal probe of the 2010 explosion that killed 29 miners. Hughie Elbert Stover is accused of lying to a FBI agent and a federal inspector, as well as ordering an employee to dispose of thousands of security documents from the mine more than nine months after the fatal blast. Stover could face five years in prison for lying to the FBI and 20 years for obstructing justice.