A FALL OF ROOF OCCURRED IN THE WEST MAIN ENTRIESIN THE #0 ENTRY BETWEEN X-CUT 23 AND 24, APPROX 12100' OUT BY THE UNIT. THE FALL WAS APPROX 35' LONG BY 18' WIDE BY 6 1/2' HIGH AND THE AREA WAS SUPPORTED WITH 6 FT FULLY GROUTED BOLTS. APPARENT CAUSE WAS AN UNDETECTED SLIP WITH WATER.