OAKLAND COUNTY, Mich. – One of the four people charged after a 5-year-old boy was killed in a hyperbaric chamber explosion at an Oakland County health care facility in January 2025 learned his sentence on Monday.
Tamela Peterson, 59, of Brighton, Jeffrey Mosteller, 66, of Clinton Township, Gary Marken, 66, of Spring Arbor, and Aleta Moffitt, 61, of Rochester Hills, were charged after Thomas Cooper was killed when the hyperbaric chamber he was receiving treatment in exploded at the Oxford Center in Troy on Jan. 31, 2025. The boy’s mother was also injured in the explosion.
Mosteller, the safety manager, along with Peterson, the Oxford Center’s founder and CEO, and Marken, the primary management assistant, were charged with second-degree murder and involuntary manslaughter…