Abstract: At approximately 11:00 a.m. on March 2, 2011, Employee #1, with Scripps Health Green Hospital, was performing scheduled periodic maintenance on a Trane air handling unit located in a roof-top mechanical room at the hospital. He was using a grease gun to lubricate areas located behind the guard that protected the unit's belt drive. Employee #1 had disconnected the unit's power source, but failed to wait for the blower fan to stop rotating. When he reached in to remove the gun's hose from a grease fitting, the rag he was holding became caught in the moving belt. Employee #1's left hand was drawn into the nip point between the in-running belt and a pulley. He was hospitalized at Scripps Memorial Hospital for partial amputations of his middle, ring, and pinky fingers.