U.S. Steel said its investigation indicates the explosion happened when workers were flushing a gas valve in preparation for ...

An explosion at a US Steel plant near Pittsburgh, Pennsylvania, left two people dead and at least 10 injured on Monday, ...

The explosion at U.S. Steel's Pittsburgh-area plant has reignited debate about its future. The plant, part of a long-standing steelmaking tradition in the Mon Valley, faces uncertainty despite recent ...