Multiple people have been injured in Pennsylvania, and several medical helicopters have been dispatched to the area.

The Pennsylvania county where an explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured more than ...

One person has died and dozens are reportedly injured or trapped under rubble following an explosion at a U.S. Steel plant ...

Two workers were killed and nearly a dozen were injured while they were preparing for a maintenance project at the Clairton facility.

Clairton, Pennsylvania was rocked Tuesday by an explosion at the U.S. Steel Clairton Coke Works. Clairton Mayor Richard ...

Timothy Quinn, 39, of East Huntingdon Township, also died in the incident. Ten other people were injured. Three of them are ...

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

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

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

Regulators are temporarily stepping up pollution monitoring in the Mon Valley after a deadly explosion at U.S. Steel’s ...