Clay Mullins (left), brother of mine disaster victim Rex Mullins, listens as Upper Big Branch miner Stanley "Goose" Stewart tells the House Education and Labor Committee that the mine "was a ticking time bomb" because of problems with ventilation and explosive methane and coal dust. Jon C. Hancock/AP hide caption

itoggle caption Jon C. Hancock/AP

Mine workers stand at the entrance of the Upper Big Branch coal mine on April 9, a few days after an explosion killed 29 men. Matt Sullivan/Getty Images hide caption

itoggle caption Matt Sullivan/Getty Images

Massey Energy Co. CEO Don Blankenship speaks to reporters in Montcoal, W.Va., on April 6. A filing with the SEC states that Blankenship was paid $17.8 million last year. Haraz N. Ghanbari/AP hide caption

itoggle caption Haraz N. Ghanbari/AP

An ambulance is seen at the Massey Energy Co.'s Upper Big Branch mine April 10 in Montcoal, W.Va., the site of the nation's deadliest coal mine disaster in decades. Bob Bird/AP hide caption

itoggle caption Bob Bird/AP