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

U.S. Steel Clairton Coke Works' current limited coke-making capacity due to Monday's explosion is prompting concerns.

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

Data from the EPA and OSHA provide a glimpse into some of the previous violations and injury reports at the Clairton Coke ...

A second Westmoreland County man was identified as the other victim who was killed Monday in an 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 ...

The Allegheny County Health Department issued an update on air quality near the U.S. Steel Clairton Coke Works following ...

Workers were heating coal and preparing for routine maintenance when an explosion rocked a U.S. Steel plant outside ...