INJURED WAS INSTALLING A FLY BOARD BETWEEN CROSSCUT 2X3 ENTRIES. HAD ONE END OF AN EIGHT FOOT BOARD UP BOLTED TO TOP. HE HAD DRILLED HOLE FOR OTHER BOLT AND WAS BRINGING DRILL STEEL OUT OF TOP, & DID NOT STOP ROTATION, WHEN DRILL STEEL CLEARED THE BOARD THE STEEL HIT HIM IN LEFT EYEBROW.