A ROOF FALL WAS DISCOVERED IN THE #2 ROOM OF THE 1ST SOUTH BUTT SECTION. FALL WAS FROM #4 X-CUT TO #6 X-CUT AND THROUGH X-CUT TO #3 ROOM. FALL AREA WAS 135' LONG BY 18-20' WIDE AND AT LEAST 6' HIGH. AREA WAS BOLTED WITH 4' FULLY-GROUTED RODS. THIS WAS A KNOWN BAD ROOF AREA. THE ROCK FALL HAD LAMINATIONS AND STREAKS OF SANDSTONE.