IT WAS REPORTED THAT EMPLOYEE WAS USING AN AIR IMPACT WRENCH ON 1260 DRAGLINE HOIST DRUM CLAMP BOLT AND NUT. A PIECE OF WELDING ROD STOCK WAS PLACED THROUGH AIR SOCKET TO ONTO AIR WRENCH FITTI NG AND WAS TAPED. THE PIECE OF WELDING ROD POKEDTHROUGH ONE END OF THE TAPE. HE ENGAGED THE AIR IMPACT WRENCH AND A PIECE OF METAL STICKING OUT LACERATED RIGHT INDEX FINGER. 6 STITCHES.