A ROOF FALL OCCURED IN THE 1ST S.E.MAINS FROM ENTRY 0 TO ENTRY 1@ SURVEY STATION 27+50. THE FALL MEASURED 90'LONG X 18.5'WIDE X 9'THICK. THIS AREA HAD BEEN BOLTED WITH 9'DOUBLELOCK & 6'FULLY GROUTED BOLTS. ALL APPROACHES TO THIS AREA HAVE BEEN TIMBERED.