THE ROOF FALL WAS DISCOVERED AT 11:10 ON 3-10-03 BY THE FIRE BOSS OF THE MINES. FALL OCCURRED 180 FT OUTBY SS #506 & EXTENDED FOR APPROXIMATELY 150'. FALL MEASURED 150' LONG, 19' WIDE AND 0-7 1/2' HIGH. AREA WAS BOLTED WITH 5' COMBINATION RROOF BOLTS. NO EQUIPMENT INVOLVED, NO VENTILATION INTERRUPTION, FALL WILL NOT BE CLEANED UP.