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

Brian Doyle remembers the explosion that hurled him to the coke plant’s floor — but little else from that day. It was a ...

In the last five years, U.S. Steel has paid more than $10 million in penalties for violations of the Clean Air Act at ...

One person has died, one person is unaccounted for and at least 10 are injured following an explosion at a U.S. Steel plant ...

One person has died and dozens are reportedly injured or trapped under rubble following an explosion at a U.S. Steel plant ...

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

Clairton, Pennsylvania was rocked Tuesday by an explosion at the U.S. Steel Clairton Coke Works. Clairton Mayor Richard ...

Allegheny County is increasing air quality monitoring after an explosion at a U.S. Steel plant south of Pittsburgh killed two ...

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

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

Clairton, Pennsylvania, Mayor Richard Lattanzi spoke with NBC News' Gadi Schwartz about the deadly explosion at a steel ...

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