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

Allegheny County is boosting air monitoring after a deadly explosion at U.S. Steel’s Clairton Coke Works, a plant with a ...

When horrific situations strike in the Pittsburgh area, such like the U.S. Steel Clairton coke plant explosion that killed ...

The Allegheny County Health Department announced that Mobile Air Units will be deployed in the Mon Valley as part of an ongoing investigation.

The explosion happened when workers were flushing a gas valve in preparation for maintenance on two of the plant's coke oven ...