THE EMPLOYEE WAS LOOSENING A LARGE NUT ON A BRAKE PACK ON THE WATER TRUCK. THE BREAKOVER BAR THE EMPLOYEE WAS USING BRKE AND STRUCK THE EMPLOYEE ON THE LEFT SIDE OF HIS NOSE RESULTING IN A LAC ERATION APPROXIMATELY AN INCH LONG REQUIRING ELEVEN SUTURES. THE EMPLOYEE MISSED A DAY OF WORK MONDAY (11/4/02) AND RETURNED TO FULL DUTY TUESDAY (11/5/02).