Explosions at a massive United States Steel mill in Western Pennsylvania left at least one dead and at least 10 injured, and at least one missing worker trapped under the rubble Monday.

The explosions occurred at U.S. Steel’s Mon Valley Works — Clairton Plant, also historically referred to as Clairton Coke Works, which is the largest coke-making facility in North America.

Related video above: Timelapse captured moment US Steel Clairton plant exploded

The coke and coke by-products made at the facility are key to operations at U.S. Steel’s facilities in the Pittsburgh region, but, according to the company , also serve other companies and industries in the United States. According to U.S. Steel’s Clairton Plant annual report from 2023 — the most recent report available — the plant i

See Full Page