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

• At least one person is dead, 10 injured and one unaccounted for in an explosion at the Clairton Coke Works in Pittsburgh, ...

Dozens of workers at a steel plant near Pittsburgh are trapped beneath rubble following an explosion, and police have ...

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

Authorities confirmed a second fatality after an explosion at the U.S. Steel Clairton Coke Works facility outside of ...

U.S. Steel says it believes a gas valve failure led to the explosion Monday morning at its Clairton Coke Works, in which two ...

“It is with profound sadness that I share with you that the U. S. Steel colleague who had been unaccounted for has been ...

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

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

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

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

The incident was at the U.S. Steel Clairton Coke Works plant in Clairton. One victim has been identified as Timothy Quinn, a ...