Two workers died and at least 10 people were injured after multiple explosions at the U.S. Steel Clairton plant.

Scientists may have figured out what caused one of the strangest explosions ever observed in our universe: A massive star ...

A man who died following multiple explosions at the U.S. Steel Clairton plant on Monday has been identified as Timothy Quinn.

Multiple explosions on Monday at a U.S. Steel plant near Pittsburgh killed two people and injured 10 others, according to the ...

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

Gov. Josh Shapiro on Tuesday arrived in Clairton, Pennsylvania, to meet with U.S. Steel officials following Monday's ...

California's top prosecutor is choosing not to co-lead an investigation into what caused a series of fireworks explosions ...

The independent federal agency’s purpose is to investigate the "catastrophic release of hazardous substances.” ...

Dozens of firefighters battled a large commercial fire Tuesday in Marion County. The fire was reported at 7:33 p.m. at the ...

Explosions at a U.S. Steel plant near Pittsburgh left one dead, two missing and at least nine others in hospitals Monday.

Our top priority is the safety and wellbeing of our employees and the environment," U.S. Steel said in a statement released ...