Abstract: At approximately 8:30 a.m. on May 24, 2011, Employee #1 was adjusting the governor-to-carburetor control rod on a Lincoln gasoline powered portable arc welder (Model Identification Number SA-200-F163) using a pair of pliers. While the machine's engine was running, his hand slipped and went into the path of the rotating radiator-cooling fan. The fan shroud and metal guard were removed during a previous modification of the machine, but never replaced. Employee #1 suffered a partial amputation of his ring finger, severe lacerations and fractures of his middle finger, lacerations and fractures to his index finger, and a fracture at the end of his thumb on his right hand. Employee #1 was transported to a medical center, where he underwent surgery to repair his hand. After the surgery, he was hospitalized for postoperative care.