A ROOF FALL OCCURRED ON NO.6 BELT-D-3 MAINS AT SURVEY STATION NO. 3803. THE FALL WAS APPROX. 80 FT LONG X 18 FT WIDE X 7 FT HIGH. THE FALL CONTAINED 5 FT RESING TENSION BOLTS. THE FALL AREA WA S RESUPPORTED AND THE CAVITY SCREENED. THE FALL WAS CLEANED UP.