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 ...

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

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

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

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

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

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

A second Westmoreland County man was identified as the other victim who was killed Monday in an explosion at U.S. Steel’s ...

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

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

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