AN UNINTENTIONAL ROOF FALL OCCURRED ON 1-20-01 ON THE #4 BELT AT BREAK #5. FALL WAS APPROXIMATELY 60'L X 20' W X 4-5'H. NO INJURIES, #4 BELT CAUGHT, VENTILATION WAS NOT INTERUPTED. THE AREA HA D BEEN BOLTED WITH 4' FULLY GROUTED RESIN BOLTS.FALL WILL BE CLEANED UP.