AN UNINTENTIONAL ROOF FALL OCCURRED AT 3 + 00 ENTRY #7 IN THE SOUTH PANEL OFF OF THE 2ND MAIN EAST. THE FALL 33'LONG, 18'WIDE, 4'THICK, DID NOT AFFECT VENTILATION OR IMPEDE TRAVEL. THE ROOF WA S SUPPORTED BY 4' FULLY GROUTED RESIN TYPE ROOF BOLTS, INSTALLED IN OUR CURRENT APPROVED PATTERN. THE AREA WAS DEVELOPED 10/3/00.