AT APPROX. 10:00 PM A REPORTABLE ROOF FALL WAS ENCOUNTERED INT HE 8 LEFT DEVELOPMENT SECTION AT X CUT 22 1/2. THE FALL MEASURED 6FT HIGH, 8FT WIDE AND 20 FT LONG. THIS FALL BLOCKED THE SECONDA RY ESCAPEWAY LOCATED IN THE #3 RETURN ENTERY OF THE 8 LEFT SETION. NO PEOPLE WERE WORKING INBY AT THE TIME OF THE FALL.