AN UNINTENTIONAL ROOF FALL OCCURRED ON D-3 MAINS NO. 2 ENTRY INTERSECTION 2, 1 XCUT AT SURVEY STATION NO. 3684. THE FALL CONTAINED 5' RESIN TENSION BOLTS & THE AREA WAS DEVELOPED 9-30-99. THE FALL WAS APPROX 18' WID X 40' LONG X 7' HIGH. THE AREA WAS DANGERED OFF & FLOOR TO ROOF SUPPORT WILL BE ADDED AROUND FALL. THE FALL WILL NOT BE CLEANED UP AT THIS TIME.