THE EE WAS HOLDING THE BOTTOM OF A GROUND ROD DRIVING TOOL TO HELP ANOTHER EE, WHO WAS HOLDING THE TOP, DRIVE THE GROUND ROD IN. THE EE'S LEFT HAND SLIPPED OFF THE BOTTOM OF THE TOOL DURING IT S UPWARD MOTION. THE TOOL CAME OFF THE ROD. DURING THE DOWNWARD MOTION, THE EE'S LEFT INDEX FINGER WAS LACERATED WHEN CAUGHT BETWEEN THE TOOL AND THE ROD. THIS RESULTED IN THE FINGER REQUIRIN