AN EQUIPMENT REPAIR CONTRACTOR WAS INSTALLING A BUSHING ON A HAULER. CONTRACTOR STRUCK THE BUSHING WITH A HAMMER. A SMALL PIECE OF METAL BROKE OFF AND STRUCK A TXU EMPLOYEE. A SLIVER OF MET AL (1/4""X 1/16"") AND SEVERAL SMALL FRAGMENTS HAD TO BE EXTRACTED BY A DR. ONE STITCH WAS RQUIRED DUE TO THE EXTRACTION INCISION.