EE WAS ASSISTING CO-WORKER IN THE TASK OF INSTALLING ROCK BOLTS, WHEN A PIECE OF LOOSE DISLODGED FROM THE RIB AND FELL, STRIKING THE GUARD (HAND RAIL) ON THE SCISSOR LIFT AND A PORTION OF IT S TRUCK EE ON THE LOWER LIP. A SMALL LACERATION AND CHIPPED TOOTH WAS SUSTAINED.