U.S. Steel says its preliminary investigation found that the blast happened after pressure built up while a gas valve was ...

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

Explosions at Clairton Coke Works, a U.S. Steel plant near Pittsburgh, left one dead, two missing and at least seven others ...

The plant, a massive industrial facility along the Monongahela River south of Pittsburgh, is considered the largest coking ...

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

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

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

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

An explosion Monday at a U.S. Steel plant near Pittsburgh has left people trapped under the rubble, with emergency workers on ...

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 ...

An explosion at a U.S. Steel plant near Pittsburgh has left dozens injured or trapped under the rubble, with emergency ...