In this April 2012 photo released by the Kentucky Division of Mine Reclamation and Enforcement, an aerial view shows a surface coal mine in Martin County, Ky. (AP Photo/Kentucky Division of Mine Reclamation and Enforcement)
In this April 2012 photo released by the Kentucky Division of Mine Reclamation and Enforcement, an aerial view shows a surface coal mine in Martin County, Ky. (AP Photo/Kentucky Division of Mine Reclamation and Enforcement) AP
In this April 2012 photo released by the Kentucky Division of Mine Reclamation and Enforcement, an aerial view shows a surface coal mine in Martin County, Ky. (AP Photo/Kentucky Division of Mine Reclamation and Enforcement) AP