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What caused a deadly explosion at a US Steel plant? New details released.

The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation ...

Fatal blast at US steel's Clairton plant sparks doubts over its future

The fatal explosion last week at US Steel's Pittsburgh-area coal-processing plant has revived debate about its future just as ...

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

“Pressure built inside the valve, leading to valve failure and coke oven gas filling the area and ultimately exploding when ...

Gas valve failure cited in deadly explosion at U.S. Steel plant

The deadly explosion at Clairton Coke Works near Pittsburgh occurred when a gas valve was flushed before planned maintenance, ...

USW Local 1557 vice president reacts to new details in Clairton Coke Works explosion investigation

Channel 11 spoke exclusively with United Steelworkers Local 1557 Vice President Richard Tikey, sharing his reaction to new details in the investigation into the deadly explosion at the Clairton Coke ...

Fatal explosion at U.S. Steel's plant raises questions about its future, despite heavy investment

The explosion this week at U.S. Steel's Pittsburgh-area plant has reignited debate about its future. The Clairton plant is ...

Two people dead, 10 others injured in explosion at US Steel plant in Pennsylvania

An explosion at a US Steel plant near Pittsburgh, Pennsylvania, left two people dead and at least 10 injured on Monday, ...