CLAIRTON, Pa. (AP) — Investigators are working to determine the cause of an explosion that rocked a steel plant outside ...

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

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

Two workers were killed and nearly a dozen were injured while they were preparing for a maintenance project at the Clairton facility.

The deadly blast at the U.S. Steel facility outside Pittsburgh was just the latest in a series of recent workplace accidents.

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

An explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured more than 10 others. The CEO has vowed ...

Timothy Quinn, 39, of East Huntingdon Township, also died in the incident. Ten other people were injured. Three of them are ...

A devoted dad has been identified as one of the two steel workers killed from an explosion at a Pennsylvania steel plant on ...

Two workers have died and ten were wounded after blasts at a US steel plant in Pennsylvania, officials said. "Multiple ...

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

A major rescue mission was underway at the US Steel Clairton Coke Works plant near Pittsburgh, Pennsylvania, which exploded ...