AN UNINTENTIONAL ROOF FALL OCCURRED IN THE 4-WAYINTERSECTION OF ENTRY #5 @ 8+70 - 9+40. FALL 60'LONG, 18' WIDE & 4 1/2' THICK. IT DID NOT IMPAIRVENTILATION OR IMPEDE TRAVEL. DAMAGE OCCURRED TO THE BELT STRUCTURE AT THIS LOCATION. ROOF WAS SUPPORTED BY 4' FULLY GROUTED ROOF BOLTS. THE INTERSECTION WAS DEVELOPED DEC. 2000.