The deadly explosion at Clairton Coke Works near Pittsburgh occurred when a gas valve was flushed before planned maintenance, ...

Pittsburgh Action News 4 has confirmed at least two people have died and nine others have been injured after multiple ...

U.S. Steel says it believes a gas valve failure led to the explosion Monday morning at its Clairton Coke Works, in which two ...

U.S. Steel released preliminary findings about the potential cause of Monday's deadly explosion at U.S. Steel Clairton Coke ...

Two workers died and at least 10 people were injured after multiple explosions at the U.S. Steel Clairton plant.

The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation is in its early stages.

U.S. Steel says preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing ...

Multiple people have been injured in Pennsylvania, and several medical helicopters have been dispatched to the area.

Two people were killed and 10 others were injured in an explosion at the U.S. Steel Clairton Coke Works plant on Monday.

The explosion sent a cloud of toxic smoke spiraling from the Clairton Coke Works in Pittsburgh after locals heard a loud boom ...

Preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing plant near ...

Explosions at the US Steel plant near Pittsburgh in Pennsylvania on Monday resulted in one death, two missing persons, and at ...