(NewsNation) — Two people were killed and at least 10 others were injured Monday after multiple explosions at a U.S. Steel plant just outside Pittsburgh.

Clairton Coke Works, a massive industrial facility along the Monongahela River south of Pittsburgh, is considered the largest coking operation in North America, NewsNation local affiliate WHTM reported.

Monday's explosion was the latest in a list of incidents and violations at the facility.

Previous incidents at Clairton Coke Works

In February 2025, a battery fire caused an audible boom and sent two workers to the hospital, local media reported.

A year before that, the Allegheny County Health Department fined U.S. Steel nearly $2 million for violating the Clean Air Act more than 360 times, according to department records.

The county

See Full Page