MONTCOAL, W.Va. -- Congressman Nick Rahall says at least three workers from a West Virginia mine wrecked by an explosion have come to him complaining of unsafe working conditions since the blast.
Rahall said Wednesday the miners from the Upper Big Branch mine are fearful of losing their jobs so they wanted their identities kept secret. Rahall says the miners were worried about unsafe methane levels in the mine before the explosion.
Officials believe the blast that killed 25 people Monday may have been caused by a buildup of methane.
Massey Energy Co., which owns the mine, has defended its safety record.
The federal Mine Safety and Health Administration has appointed a special team of investigators to look into the blast.