The potential pollution impact was mitigated because the weather cooperated, the Allegheny County Health Department said.

This is a response to the forecasted weather that poses a risk to residents on those dates.

After a fatal explosion at U.S. Steel’s Clairton Coke Works, Mon Valley residents remain cautious though Allegheny County ...

A code red heat advisory has been announced for Allegheny County on Tuesday. According to the Allegheny County Department of ...

Timothy Quinn, a 39-year-old father and second-generation steelworker, was among the two killed in the Monday explosion at a ...

The CEO of U.S. Steel pledged a transparent investigation into the Clairton Coke Works explosion that killed two and injured ...

Death of NYPD officer in Manhattan shooting spotlights rise of Bangladeshi immigrants within ranks ...

Allegheny County Executive Sara Innamorato joined ABC News Live with an update on the investigation of the explosion at a Pennsylvania steel plant and its impact on the local community.

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

Allegheny County officials say two people are dead and ten others are injured, including two medics. WGAL News 8's Sarah ...

An explosion at a U.S. Steel plant near Pittsburgh left two dead and sent at least 10 to hospitals Monday and heavily damaged ...