Deadly Mine Explosion in West Virginia

April 9: State Police monitor the entrance to the Massey Energy's Upper Big Branch mine where rescue and recovery efforts have been delayed again following the explosion in Montcoal, W.Va. that killed 25 miners. Four miners remain missing. (2010)

April 9: A Mine Safety and Health Administration truck sits at the entrance to Massey Energy's Upper Big Branch mine where rescue and recovery efforts have been delayed. (2010 )

April 8: A  truck decal in tribute to coal miner Steven Harrah, 40, at Rose and Quesenberry Funeral Chapel in Shady Springs, W.Va. (AP)

April 8: Michael Brooks of Webbs Of Beckley Florist delivers flowers for deceased coal miner Steven Harrah, 40, of Cool Ridge, W.Va. to the Rose and Quesenberry Funeral Chapel in Shady Springs, W.Va. Webbs has been taking orders from around the country for the funerals of three miners, Carl Acord, 52, Robert Clark, 41, and Steven Harrah, 40, from in the Beckley area. (AP)

April 9: Friends and family of coal miner Steven Harrah, 40, of Cool Ridge, walk into the Rose and Quesenberry Funeral Chapel in Shady Springs, W.Va. (AP)

April 7: West Virginia Gov. Joe Manchin briefs reporters on the latest mine rescue operations in Montcoal, W. Va. (AP)

April 7: State troopers guard an entrance to Massey Energy Co.'s Upper Big Branch mine in Montcoal, W.Va., as rescue teams drill holes to vent poisonous gases in search for survivors of an explosion that killed 25 coal miners. (AP)

April 7: State troopers guard an entrance to Massey Energy Co.'s Upper Big Branch mine in Montcoal, W.Va., as rescue teams drill holes to vent poisonous gases in search for survivors of an explosion that killed 25 coal miners. (AP)

April 6: Parishioners pray at St. Joseph's Catholic Church in Whitesville, W.Va., during a mass for the coal miners who were killed. Rescue crews hoped to bore deep inside to find four miners missing after an explosion that killed at least 25 of their co-workers in the worst U.S. mine disaster in a quarter century. (Reuters)

April 6: Michelle McKinney hugs her aunt, Jeanie Sanger, in Whitesville, W.Va. as they talked to reporters about McKinney's father and Sanger's brother, Benny Willingham, who were among those killed in an explosion at Massey Energy Co.'s Upper Big Branch mine. (AP)

April 6: A West Virginia State Police officer stands at the entrance to the Massey's Performance Coal at the scene of a deadly accident at the Upper Big Branch Mine in Montcoal. Rescuers raced to find coal miners missing deep underground after an explosion killed their colleagues. (Reuters)

April 6: A worker clears orange cones near a secondary entrance to the Massey's Performance Coal at the scene of an accident where coal miners were killed. A suspended rescue mission was to resume Tuesday after bore holes could be drilled to allow for toxic gases to be ventilated from Massey's sprawling Upper Big Branch mine. (Reuters)

April 5: A West Virginia State Police officer directs traffic at the entrance to the Massey's Performance Coal at the scene of an accident where coal miners were killed. Officials had hoped some of the missing survived the blast Monday afternoon and were able to reach airtight chambers stocked with food, water and enough oxygen for them to live for four days. (Reuters)

April 5: A row of ambulances waits at the scene of a mining accident at the Upper Big Branch Mine in Montcoal, West Virginia. Rescuers were searching for missing coal miners after an explosion killed 25 of their colleagues at the mine owned by Massey Energy. (Reuters)

April 6: A West Virginia State Police officer is parked at the entrance to the Massey's Performance Coal at the scene of a deadly accident at the Upper Big Branch Mine in Montcoal. Rescuers raced to find coal miners missing deep underground after an explosion killed their colleagues. (Reuters)

April 5, 2010: West Virginia State Police direct traffic at the entrance to Massey Energy's Upper Big Branch Coal Mine in Montcoal, W.Va.

April 5, 2010: View of the property near the scene of a mine explosion at the Upper Big Branch Mine in Montcoal, W.Va.

April 5, 2010: Emergency vehicles leave the entrance to Massey Energy's Upper Big Branch Coal Mine in Montcoal, W.Va., after an explosion at the underground coal mine. (AP)

April 5, 2010: Friends and family wait alongside emergency personnel at the scene of a mine explosion at the Upper Big Branch Mine in Montcoal, W.Va..

April 5, 2010: Authorities survey the scene of a mine explosion at the Upper Big Branch Mine, in Montcoal, W.Va.

April 5, 2010: Authorities survey the scene of a mine explosion at the Upper Big Branch Mine, in Montcoal, W.Va.

April 5, 2010: Billy Pettry, Caden Gray, 5, and Brandon Gray, from left, sit on the steps of the Marsh Fork Worship Center in Eunice, W.Va., near the entrance to Massey Energy's Upper Big Branch Coal Mine in Montcoal, W.Va.