AN UNINTENTIONAL ROOF FALL OCCURRED ON D-4 MAINS NO. 4 ENTRY AT SURVEY STATION 4746. THE FALL WAS 18 FT WIDE X 18 FT LONG X 7 FT HIGH. THE FALL WAS DANGERED OFF AND AAI. SUPPORT WAS ADDED IN T HE AREA. THE FALL CONTAINED 5 FT. RESIN TENSION BOLT WAS DEVELOPED 4-3-00. THE FALL WAS CLEANED UP AND THE AREA RESUPPORTED. THIS WAS ON THE 001-0 WORKING SECTION.