AN UNINTENTIONAL ROOF FALL WAS DISCOVERED IN THE #7 ENTRY ON #8 BELT MAINS. SIZE OF FALL: 18'X 18' X 406' H (INTERSECTION). AREA HAD BEEN SUPPORTED WITH 48"" FULLY GROUTED RESIN BOLTS. NO INJUR IES, NO EQUIPMENT CAUGHT, VENTILATION WAS NOT INTERRUPTED.