Abstract: Employee #1, age 15, was working part-time in the meat department after school. A coworker had taken apart the meat grinder for cleaning before he left for the day, and Employee #1 had cleaned and sanitized the various parts. After letting them dry, Employee #1 placed the parts back on the meat grinder. He was using his fingers to remove water droplets from the grinder's throat when he apparently brushed against a lever, activating the machine. The auger screw caught his finger, pulling his right arm into the grinder. Employee #1 quickly turned off the machine, reversed its direction, and withdrew his arm. He was transported to the hospital, where his lower arm was surgically amputated. Employee #1 was working without supervision at the time of the accident.