The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation ...

United States Steel said on Friday a fatal blast that killed two and injured 10 others at its Clairton Coke Works plant near ...

U.S. Steel has released new details on what investigators believe caused the explosion at the Clairton Coke Works plant that ...

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

U.S. Steel released preliminary findings about the potential cause of Monday's deadly explosion at U.S. Steel Clairton Coke ...

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

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

HARRISBURG, Pa. — (AP) — The fatal explosion last week at U.S. Steel's Pittsburgh-area coal-processing plant has revived ...

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

Nippon Steel promised to invest $14B to keep US Steel's aging plants operating for decades but the deadly explosion at the Clairton coking plant will test its resolve through a costly crisis ...

Devastation and rubble could be seen from Sky 4, Pittsburgh's only news chopper, following an explosion at US Steel Clairton ...