September 30, 2025 · A 70-year-old cast-iron valve leaked gas when U.S. Steel and contract workers attempted to flush it with water, causing an explosion which killed 2 and injured 11 at the Clairton Coke Works.
September 18, 2025 · Preliminary evidence indicates a combustible wood dust explosion occurred at the Horizon Biofuels facility in Fremont, Nebraska. The structure remains unsafe to enter, delaying the investigation.
September 2, 2025 · Horizon was cited by OSHA in 2012 and the state Dept. of Environment & Energy in 2025 for combustible dust buildup, which may have caused the July 29 explosion that killed three.
September 2, 2025 · Volume 3 of the CSB’s chemical incident reports cover 30 incidents from 2020 to 2025 that caused two deaths, 25 serious injuries, and $1.8 billion in damage across 15 states.