EE WAS REPLACING A WEAR IRON ON THE BUCKET OF A 992 LOADER. HE WAS HOLDING THE HEAD OF A BOLT WITH HIS BEAR HAND AND USING AN IMPACT WRENCH TO LOOSEN THE BOLT. THE BOLT TURNED WITH THE IMPACT WRENCH LACERATING HIS LEFT INDEX FINGER, 6 STITCHES WERE REQUIRED TO CLOSE THE WOUND. HE DID NOT LOOSE ANY WORK TIME AS A RESULT OF THIS INCIDENT.