The explosion took place at the US Steel Clairton Coke Works plant, located south of Pittsburgh, Pennsylvania.

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

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

An explosion rocked the U.S. Steel Clairton Coke Works facility near Pittsburgh Monday, leaving people trapped beneath the ...

The Clairton Coke Works is considered the largest coking operation in North America and one of four major U.S. Steel plants ...

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

CLAIRTON, Pa. (AP) — An explosion at a U.S. Steel plant near Pittsburgh left one person dead and sent at least 10 to ...

One person has died and two are believed to be missing in the explosion at a U.S. Steel plant, Allegheny County emergency services spokesperson Kasey Reigner said. Multiple other people were treated ...

Authorities confirmed a second fatality after an explosion at the U.S. Steel Clairton Coke Works facility outside of ...

Two steelworkers are dead after an explosion at the U.S. Steel Clairton Coke Works plant. The blast happened on Monday just ...