Doe, a 42-year-old laborer, was installing air pollution control equipment in a confined space at a Massachusetts factory.
The equipment consisted of a 12-foot, two-piece wheel that weighed 1,000 pounds when fully assembled.
After Doe removed the wood block that supported half of the wheel while it was suspended by a sling from a forklift, the wheel swung toward Doe and struck him. The contact caused multiple fractures and a severe left arm injury.