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

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

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

U.S. Steel says preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing ...

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

An explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured 10 others on Monday morning.

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

The fatal explosion last week at U.S. Steel’s Pittsburgh-area coal-processing plant has revived debate about its future just ...

An explosion at the company’s blast furnace/basic oxygen furnace complex in Pennsylvania occurred during a maintenance procedure, says the steelmaker.

Authorities said their investigation has shifted to the cause of the explosion after they accounted for everyone who was missing.