Group Against Smog & Pollution

A Connecticut engineering firm retained by U.S. Steel to investigate the deadly Aug. 11 explosion at its Clairton Coke Works facility today released preliminary findings. The firm, Engineering Design & Testing Corp., issued the following information on its website Thursday: The explosion took place in the 13-14 Coke Battery transfer area when an 18-inch cast iron valve ruptured, releasing flammable coke oven gas, which subsequently exploded. The valve was originally manufactu

The Allegheny County Health Department (ACHD) on Friday released new details related to air quality monitoring in the wake of the deadly...

Last month’s deadly explosion at U.S. Steel’s Clairton Coke Works left the community reeling, and while the Allegheny County Health...

The Allegheny County Health Department (ACHD) announced Mobile Air Units provided by state Department of Environmental Protection (DEP) and Carnegie Mellon University (CMU) will be stationed in the Mon Valley today and tomorrow. Here's the press release issued Thursday afternoon: This increased air quality monitoring is part of the ACHD Air Quality program's continued investigation of the incident at the Clairton Coke Works on Monday, August 11, 2025.   The addition of the Mo

Yes, public officials, the Allegheny County Health Department, regulatory and citizen monitors all confirmed that before, during, and...

UPDATE: Late Monday afternoon, Allegheny County released this update: Allegheny County Emergency Services (ACES) and Allegheny County Police (ACPD) remain on scene of the confirmed explosion at U.S. Steel Clairton Coke Works plant. Officials can confirm there has been a second fatality in connection with this incident. This was the last of the two individuals that was initially unaccounted for. Additionally, ten people were transported to area hospitals to be treated for a va