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Gas valve failure during routine maintenance work may have led to fatal explosion, US Steel says

U.S. Steel says preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing ...

Preliminary findings from U.S. Steel suggest what may have caused deadly Clairton Coke Works explosion

U.S. Steel released preliminary findings about the potential cause of Monday's deadly explosion at U.S. Steel Clairton Coke ...

Investigators release new details on what caused the US Steel Clairton Coke Works explosion

U.S. Steel has released new details on what investigators believe caused the explosion at the Clairton Coke Works plant that ...

Since explosion at U.S. Steel plant in Clairton, concerns surround limited coke-making capacity

U.S. Steel Clairton Coke Works' current limited coke-making capacity due to Monday's explosion is prompting concerns.

US Steel Says Deadly Explosion Likely Caused by Valve Failure

United States Steel Corp. said Friday the fatal blast that killed two workers at its Clairton Coke Works facility in ...

Massive rescue effort led to pulling workers from debris of Pennsylvania steel plant explosion

Workers were heating coal and preparing for routine maintenance when an explosion rocked a U.S. Steel plant outside ...

Air quality concerns linger in the wake of steel plant explosion in Pennsylvania

Allegheny County is increasing air quality monitoring after an explosion at a U.S. Steel plant south of Pittsburgh killed two ...

Valve failure at center of U.S. Steel Clairton plant explosion

U.S. Steel released preliminary findings about the potential cause of the deadly explosion at U.S. Steel Clairton Coke Works ...

Explosion at US Steel Clairton Coke Works plant happened while crews were flushing gas valve

U.S. Steel has released new details on what investigators believe caused the explosion at the Clairton Coke Works plant that ...

U.S. Steel Plant Explosion May Have Occurred While Flushing Gas Valve

The company said pressure likely built up inside the valve, causing it to fail and leading to coke oven gas filling the area, which then exploded after being ignited.