CORE HOLE WAS DRILLED FROM SURFACE TO MINE. HOLE WAS USED TO COLLECT REQUIRED GEOLOGIC DATA FOR PROPOSED VENT SHAFT. HOLE COULD NOT BE IMMEDIATELY PLUGGED AND WATER FROM AQUAFIER ABOVE MINE SE AM LEAKED INTO STRATA ABOVE MINE SEAM. THE WEIGHT OF WATER RESULTED IN A ROOF FALL 30'W X 60'L X 10'H DIRECTLY WEST OF THE CORE HOLE.