Allegheny County Executive Sara Innamorato joined ABC News Live with an update on the investigation of the explosion at a ...

The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation ...

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

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

Family members tell Pittsburgh's Action News 4 Steven Menefee, a father of two, was a loving man who would give you the shirt ...

A devoted dad has been identified as one of the two steel workers killed from an explosion at a Pennsylvania steel plant on ...

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

The health department began deploying mobile air units Thursday provided by Pennsylvania’s Department of Environmental ...