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Ex-safety director sentenced in fatal hyperbaric chamber explosion

Jeff Mostellar pleaded no contest to involuntary manslaughter after investigators said missing grounding straps helped cause the fatal chamber explosion.

Summary by abc12/WJRT
Former Oxford Center safety director Jeff Mostellar was sentenced to 19 months to 15 years in prison after pleading no contest to involuntary manslaughter in the January 2025 hyperbaric chamber explosion that killed 5-year-old Thomas Cooper; three other employees still…

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abc12/WJRT broke the news in Flint, United States on Tuesday, September 1, 2026.
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