AN UNINTENTIONAL ROOF FALL WAS DISCOVERED ON 4-9-01 IN THE #9 RETURN ENTRY. THE FALL MEASURED APPROX 40 FT LENGTH 20 FT WIDE, 4 1/2 FT HIGH. THE AREA AROUND THE FALL WAS BREAKERED OFF, VENTILA TION WAS NOT AFFECTED. THE AREA WILL NOT BE REHABILITATED. (5600 FT FROM THE WORKING FACE)