The Pennsylvania county where an explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured more than 10 others ...

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

The Clairton Coke Works, where an explosion killed two workers and injured 10, has a history of maintenance issues, ...

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

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

Organizations like the Breathe Project and the Group Against Smog and Pollution, in conjunction with the Allegheny County Health Department, have been closely monitoring the air quality in Clairton ...

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

A 37-year-old Tamaqua man faces arson charges after police said he used a firework to set off a pipe bomb in the borough.

The office of the Allegheny County medical examiner identified a second man who was killed in an explosion at the Clairton ...

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