THE EMPLOYEE WAS ATTEMPTING TO REMOVE A PIECE OFMETAL HUNG IN IMPACT CRUSHER. HE WAS USING A COME-A-LONG & HAD A HOOK IN AN EYE OF ANOTHER PIECE OF METAL WELDED ONTO ROTAR. THE METAL BROKE LOOSE AND CAME BACK AND HIT HIM IN THE MOUTH. IT RESULTED IN FOUR BROKEN TEETH AND A CUT TO HIS LOWER LIP. (NO STITCHES).