The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation is in its early stages.

The plant, a massive industrial facility along the Monongahela River south of Pittsburgh, is considered the largest coking operation in North America and is one of four major US Steel plants in ...

Here in our area, we have been known for many different industries over the centuries. Some of the earliest industries we have been noted for are agriculture, woolen products, glass, pottery, oil and ...

The explosion at U.S. Steel's Pittsburgh-area plant has reignited debate about its future. The plant, part of a long-standing ...