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

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

A Monongahela business launched a fundraiser to benefit employees of the U.S. Steel Clairton Works after Monday’s explosion at the plant that killed two and injured at least another 10. Michelle ...