Abstract: Employee #1 regularly worked at the discharge end of a horizontal lumber conveyor. When his left jacket sleeve caught on the conveyor's raised metal lacing, Employee #1's arm became caught between the return roller of the conveyor and a freestanding live roller that prevented exiting lumber from remaining immobile and damaging the belt with its butt end. Employee #1 could not get his arm out from between the rollers, and as the conveyor continued to run, the raised metal lacing cut into his left arm, eventually severing it. Employee #1 was then able to free himself. A nearby coworker, who had been wearing hearing protection and could not hear the employee's cries for help, came to his aid shortly after the incident. Employee #1 was hospitalized for his injuries. The rotating rollers had not been guarded to prevent contact.