Preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing plant near ...

U.S. Steel says it believes a gas valve failure led to the explosion Monday morning at its Clairton Coke Works, in which two ...

The Chemical Safety and Hazard Investigation Board’s probe into the deadly explosion at the Clairton Coke Works could take a ...

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

The Pennsylvania county where an explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured more than ...

Family members tell Pittsburgh's Action News 4 Steven Menefee, a father of two, was a loving man who would give you the shirt off his back.

Workers were heating coal and preparing for routine maintenance when an explosion rocked a U.S. Steel plant outside ...