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

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

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

The mill, which is part of the recent merger between U.S. Steel and Nippon Steel, has faced scrutiny from federal and local ...

Two people are dead and 10 others injured after an explosion at U.S. Steel’s Clairton Coke Works near Pittsburgh. The ...

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

The blast killed at least one person and injured at least 10 others. Nearby residents were advised to stay inside over air quality concerns.

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

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