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Combustible Dust News and Resources

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OSHA cites Horizon Biofuels nearly $150K for willful safety violations

As part of its investigation, OSHA fined Horizon Biofuels nearly $150K for willful safety violations. A combustible dust explosion killed three at its Fremont, Nebraska facility last year.
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CSB releases video on combustible dust explosion at Didion Milling

In addition to describing 13 key safety issues, the CSB’s video on the Didion Milling explosion calls on OSHA to develop an overarching combustible dust standard for general industry.

OSHA cites Horizon Biofuels nearly $150K for willful safety violations

February 17, 2026 · As part of its investigation, OSHA fined Horizon Biofuels nearly $150K for willful safety violations. A combustible dust explosion killed three at its Fremont, Nebraska facility last year.

CSB releases video on combustible dust explosion at Didion Milling

February 6, 2026 · In addition to describing 13 key safety issues, the CSB’s video on the Didion Milling explosion calls on OSHA to develop an overarching combustible dust standard for general industry.

OSHA cites New Horizons Baking for lockout/tagout, guarding violations

December 23, 2025 · OSHA cited New Horizons Baking $394,849 for three repeat and nine serious violations involving lockout/tagout, guarding, caught-between, caught-in, pinch-point, and struck-by hazards.

National Miners Day 2025: Remembering Monongah

December 5, 2025 · National Miners Day, observed annually on Dec. 6, commemorates the date of the deadliest mine accident in U.S. history. The Monongah disaster kickstarted modern safety and health regulations.

Maine DOL announces December 2025 free training classes

November 21, 2025 · Maine DOL’s December 2025 free training class topics include combustible dust, electrical safety, hazard identification, and OSHA 10-hour construction certification courses.

CSB issues update on Horizon Biofuels explosion investigation

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.

CSB recommendations to Didion Milling left unanswered

September 8, 2025 · Combustible dust explosions at Didion Milling's Wisconsin facility in 2017 killed five and seriously injured 14. Nine CSB safety recommendations are left unanswered despite outreach.

CSB investigating fatal Horizon Biofuels explosion

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.