A ROOF FALL HAS OCCURRED ON THE 001-0 SECTION, IN THE #4 ENTRY, AT SPAD #13371, 5000 FEET OUT BY THE WORKING FACE. THE FALL MEASURED 20 FT WIDE,20 FT LONG AND 6-8 FT THICK. VENTILATION EQUIPME NT, NOR PASSAGE OF PERSONS WAS EFFECTED. THIS AREA WILL BE REHABILITATED.