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

CLAIRTON, Pa. (AP) — Investigators are working to determine the cause of an explosion that rocked a steel plant outside ...

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

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

Two people are dead and dozens of others were injured after an explosion at the U.S. Steel Clairton Coke Works plant in ...

Allegheny County Executive Sara Innamorato joined ABC News Live with an update on the investigation of the explosion at a ...

“It is with profound sadness that I share with you that the U. S. Steel colleague who had been unaccounted for has been ...

The explosion, followed by several smaller blasts, could be felt in the nearby community and prompted county officials to ...