A ROOF FALL OCCURRED IN THE INTERSECTION AT X-CUT 13 IN THE MAIN WEST BELT ENTRY. THERE WAS A SLIP PRESENT WITH SOME WATER, AND SOFT SHALE ABOUT2 FT ABOBE THE ANCHORAGE HORIZON, A MUD BAND WAS ALSO PRESENT IN THIS AREA. THE ROOF FALL WAS 28' WIDE, 38' LONG, AND 6' HIGH AT THE INTERSECTION. THE FALL HAS BEEN CLEANED UP AND SUPPORTED.