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

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

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

Mon Valley and Pittsburgh residents concerned after US Steel coke works blast, while Allegheny County reports no air quality ...

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

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

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

The CEO of U.S. Steel pledged a transparent investigation into the Clairton Coke Works explosion that killed two and injured ...

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

Pennsylvania Gov. Josh Shapiro is expected to speak with officials and provide an update after the U.S. Steel Clairton Coke ...