A ROOF FALL WAS DISCOVERED IN THE #4 THRU 7 ENTRIES OF S PANEL AT SS#13071, 13076, 13082, 13080. THE FALL WAS APPROXIMATELY 1800 FT OFF THE ACTIVE SECTION AND MEASURED APPROXIMATELY 230 FT X 1 9FT WIDE AND UNKNOWN HEIGHT. THE AREA HAS BEEN DANGERED OFF AND WILL NOT BE CLEANED UP. VENTILATION OR TRAVEL WAS NOT AFFECTED AND NO INJURIES WERE REPORTED.