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

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

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 ...

“Pressure built inside the valve, leading to valve failure and coke oven gas filling the area and ultimately exploding when ...

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

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 ...

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

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 ...

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