AN UNINTENTIONAL ROOF FALL WAS DISCOVERED IN THE #4 ENTRY IN BREAK #66 SPAD #3949. THE FALL WAS APPROX 4'-5'HIGH, 25'W, 25'L. (INTERSECTION) FALL AREA HAD BEEN SUPPORTED WITH 4 FULLY GROUTED R ESIN BOLTS. NO INJURIES, NO EQUIPMENT CAUGHT, VENTILATION WAS NOT INTERRUPTED. FALL WILL BE CLEANED UP.