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

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 ...

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

United States Steel Corp. said Friday the fatal blast that killed two workers at its Clairton Coke Works facility in ...

U.S. Steel on Friday pinned blame for the deadly explosion Monday at the Clairton Coke Works on a valve failure that led to ...

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