WHILE REMOVING THE CUTTING EDGES FROM THE BUCKET OF THE 990 LOADER, ONE BOLT DROPPED CAUSING SPINNING. AS EE REACHED UNDER THE BUCKET, PUSHED THE BOLT BACK INTO THE SLOT & PULLED THE TRIGGER ON THE 1 INCH AIR IMPACT WRENCH, WHICH RESULTED IN CUTTING THROUGH EE'S GLOVE & LACERATING EE'S LEFT INDEX FINGER.