A ROOF FALL OCCURRED IN INTERSECTION 1 BREAK OUTBY SPAD #893 MEASURING 30'LONG, 20'WIDE, 5-6'HIGH. 42"" RESIN BOLTS FELL ABOVE ANCHORAGE. NO EQUIPMENT WAS INVOLVED. THE VENTILATION WAS NOT DIST URBED. NO INJURY OCCURRED. THE FALL WILL NOT BE CLEANED UP.