I DISCOVERED A ROOF FALL ON MY WEEKLY RETURN AIRCOURSE RUN. FALL WAS IN THE #1 ROOM RIGHT SIDE OF THE 2ND NORTH BUTT SECTION 200' INBY FALL WAS 50'LONG, 4-6'HIGH FROM THE 4TH INTERSECTION TO THE 5TH AREA WAS BOLTED WITH 3'RESIN GROUTED BOLTS AREA WAS 18-20'WIDE. AHEAD OF THIS AREA THERE WERE 4'FULLY GROUTED BOLTS.