A ROOF FALL OCCURRED 60' INBY SURVEY STATION 28 IN THE #8 HEADING, 900' INBY THE ACTIVE PILLAR LINE. THE FALL MEASURED APPROX 110'LX18'WX12'H. NO EQUIPMENT WAS INVOLVED, NO VENTILATION DISTR URBED, NO INJURY OCCURED AND THE FALL WILL NOT BE CLEANED UP.