EMPLOYEE WAS WORKING AS A SHUTTLE CAR OPERATOR ON UNIT 3. AS HE REACHED DOWN TO PICK UP AND MOVE THE CONTINUOUS MINER CABLE A PIECE OF ROOF ROCK FELL FROM BETWEEN THE ROOF BOLTS STRIKING HIM O N THE RIGHT SIDE RIBS. THE AREA WHERE THE ROCK FELL WAS SUPPORTED WITH 5' CONVENTIONAL TYPE ROOF BOLTS SPACING 4'8"". THIS INCIDENT HAS BEEN UNDER INVESTIGATION PENDING MEDICAL REPORTS FROM DR