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

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

Producers of metals and other raw materials declined as an elevated wholesale inflation reading drove up the value of the U.S. dollar. Chilean copper giant Antofagasta posted an increase in first-half ...

Pennsylvania has a huge opportunity to lead in AI — this century’s railroad moment. But will PA seize the moment?

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

Clairton, Pennsylvania was rocked Tuesday by an explosion at the U.S. Steel Clairton Coke Works. Clairton Mayor Richard Lattanzi reflects on the sad day.

Ten others were injured, and people who live near the plant were urged to stay inside. Three explosions at U.S. Steel’s ...