ON 10/11/00 A ROOF FALL WAS FOUND IN THE 3NE ""A"" RETURN. THE FALL WAS LOCATED APPROX 20'INBY SPAD 2409. THE FALL MEASURED 20'LONG, 20'WIDE, & 5'HIGH. THE FALL AREA AS WELL AS AREAS INBY AND OU TBY HAVE BEEN SUPPORTED WITH 4""BEAMS ADN 100 TON JACKS.