They were taken to a hospital with serious burns, though they were able to walk off a mine elevator after the 1:50 p.m. accident.
The mine is owned by Kingwood Mining, a subsidiary of Abingdon, Va.-based Alpha Natural Resources.
The burns are not considered life-threatening and the injured miners are being treated at West Penn Burn Center in Pittsburgh, Alpha spokesman Ted Pile said in an e-mail.
Two weeks ago, the mine was fined more than $763,000 after being cited 13 times in a year for allowing coal dust to accumulate along conveyer belts. Coal dust can catch fire because of friction from the belts, and it can intensify explosions.
The company said it would contest the fines and noted that MSHA could have evacuated the mine had it considered workers in imminent danger.
Whitetail Kittanning employs about 260 people and produces about 1.4 million tons of coal annually.
Alpha operates 57 mines in West Virginia, Virginia, Kentucky and Pennsylvania. The company also is the target of a $3.3 billion takeover by Cleveland-based iron ore producer Cliffs Natural Resources.
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