WHILE REMOVING EDGE BOLTS WITH IMPACT GUN FROM ALOADER BUCKET THE SOCKET OF THE IMPACT GUN WOULDNOT GO OVER THE NUT OF THE EDGE BOLT. EMPLOYEE, WEARING COTTON GLOVES, GRABBED THE SOCKET WHILE RUNNING THE GUN. THE NUT BROKE LOOSE AND TURNED FREELY AND A BURR CAUGHT THE EMPLOYEE'S LEFT INDEX FINGER CAUSING A LACERATION.