Officials are investigating another mine accident in West Virginia.
A fire erupted in a Massey Energy Inc. Mine Friday.
Two workers are still unaccounted for, but 19 were able to get out.
Rescue crews and family members arrived at the scene in Mellville overnight.
Officials said a carbon monoxide monitor sounded before the fire began.
A spokesman for Massey said the fire started on a belt line inside the mine.
And a West Virginia senator is leading a delegation to visit the Sago Mine.
Sen. Jay Rockefeller and several other senators will visit the mine to identify key issues for upcoming congressional hearings.
The lawmakers will also meet with the families of the victims of the Sago Mine tragedy.
Meanwhile, Randal McCloy is in a light coma at Ruby Memorial Hospital in Morgantown.
The 26-year-old is the only survivor of the Sago Mine tragedy.
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