AN UNINTENTIONAL ROOF FALL OCCURRED ON THE A-MAINS AT SURVEY STATION 193. FALL APPROX. 25'L X 17W X 22'H & CONTAINED RESIN BOLTS, 14' CABLE BOLTS, 6"" STEEL BEAMS & CRIBBS. THE AREA WAS DEVELOP ED 4/29/98. THE FALL WAS CLEANED UP & A STEEL TUNNEL ARCH WAS INSTALLED.