Ex-safety manager sentenced to 19 months in Michigan hyperbaric chamber death

A former safety manager at the Oxford Center in Troy, Michigan, Jeffrey Mosteller, 66, was sentenced to 19 months in prison after pleading no contest to involuntary manslaughter in the January 2025 fire that killed five-year-old Thomas Cooper inside a hyperbaric oxygen chamber. The incident, sparked by a static discharge in an oxygen-rich chamber, led to charges against four former center employees, including the founder and other facility staff currently awaiting trial. The case highlights ongoing safety concerns around hyperbaric therapy, although the FDA has approved HBOT for certain conditions; Cooper’s parents have filed a $100 million wrongful-death lawsuit against the clinic and chamber manufacturer.