I
Isabella Torregiani
Guest
![[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}](https://knewz.com/wp-content/uploads/2025/09/03/ant-rozetsky-_qWeqqmpBpU-unsplash.jpg "[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}")
(Ant Rozetsky/Unsplash)
Preliminary findings reveal what led to the tragic accident at a U.S. Steel plant near Pittsburgh. The explosion, which killed two workers and injured several others, occurred just before scheduled maintenance, the company confirmed.
What happened?
![[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}](https://knewz.com/wp-content/uploads/2025/09/03/peter-herrmann-z6DJJZ1-1Cg-unsplash.jpg "[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}")
The explosion happened during valve flushing. (Peter Herrmann/Unsplash)
U.S. Steel said the explosion at its Clairton Coke Works Plant occurred while workers were flushing a gas valve during maintenance preparation. The facility, located in Pennsylvania, converts raw coal into coke for steel production.
The pressure
![[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}](https://knewz.com/wp-content/uploads/2025/09/03/morteza-mohammadi-P8jEvckndSE-unsplash.jpg "[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}")
Pressure inside the valve caused it to fail. (Morteza Mohammadi/Unsplash)
According to a company news release, pressure built inside the valve, causing it to fail. This released coke oven gas into the surrounding area, which later ignited and exploded.
Unknown source
![[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}](https://knewz.com/wp-content/uploads/2025/09/03/heber-davis-fZEC4pR4Kpo-unsplash.jpg "[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}")
The source has yet to be revealed. (Heber Davis/Unsplash)
However, the exact ignition source hasnβt been identified. U.S. Steel did note that the investigation is still in its early stages. The initial blast triggered multiple secondary explosions at the plant, which sits about 15 miles from downtown Pittsburgh in Allegheny County. Bernie Hall, District 10 director of the United Steelworkers union, said in a statement that itβs still early in the investigation, βso we need to learn more before speculating further.β
Lives lost
![[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}](https://knewz.com/wp-content/uploads/2025/09/03/joost-cu-nuWoBWDswoQ-unsplash.jpg "[TrendyMediaToday.com] Cause of deadly U.S. Steel plant explosion released {file_size} {filename}")
Two people passed away following the explosion. (Joost Cu/Unsplash)
The explosion claimed the lives of Timothy Quinn, 39, and Steven Menefee, 52, as reported by the Allegheny County Medical Examiner. Ten others were hospitalized, while several more sustained minor injuries.
The post Cause of deadly U.S. Steel plant explosion released appeared first on Knewz.
Continue reading...
