An explosion at the company’s blast furnace/basic oxygen furnace complex in Pennsylvania occurred during a maintenance procedure, says the steelmaker.

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The blast happened at around 6:30 p.m. on the Patapsco River not far from the site of the former Francis Scott Key Bridge, ...

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The fatal explosion last week at U.S. Steel’s Pittsburgh-area coal-processing plant has revived debate about its future just ...

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In the last five years, U.S. Steel has paid more than $10 million in penalties for violations of the Clean Air Act at ...

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