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

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

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

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

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

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

A day after a deadly explosion rocked the Clairton Coke Works facility, Allegheny County officials confirmed that two men ...

In the last five years, U.S. Steel has paid more than $10 million in penalties for violations of the Clean Air Act at ...

An explosion at US Steel's Clairton Coke Works in Allegheny County, PA, left several injured. The plant sits along the ...

The exact locations and times for the units’ deployment will be based on real-time forecasts developed by ACHD and PADEP ...

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

Rescuers were continuing to search for one missing worker at the Clairton Coke Works more than five hours after mid-morning ...