AN UNINTENTIONAL ROOF FALL WAS DISCOVERED DURING A PRE-SHIFT EXAMINATION OF AN INACTIVE AREA OF THE MINE. THE AREA IS IN THE 1ST NORTH SUB-MAINS, #2 ENTRY, BETWEEN CROSSCUTS 21 & 22. ROOF FALL DIMENSIONS ARE: 18 FEET WIDE, 20 FEET LONG & 5 1/2 FEET HIGH.