By Jennifer C. Yates
The Associated Press
CLAIRTON, Pa. — Authorities say that an explosion at a U.S. Steel plant near Pittsburgh has injured 15 people and that a fire is still burning.
Allegheny County spokesman Kevin Evanto says there was an explosion in one of the coke ovens at United States Steel Corp.'s Clairton Coke Works around 9:30 a.m. Wednesday.
He says that 14 workers suffered burns and another suffered chest pains, but that none of the injuries is believed to be life-threatening.
Aerial television video showed smoke rising from the sprawling plant about 20 miles south of Pittsburgh. A maintenance worker died in an explosion there in September 2009.
Coke is a form of processed coal used in the steelmaking process.