80' INBY SPAD #2628 IN CROSSCUT BETWEEN #1 AND #2 ENTRY A SECTION OF MINE ROOF MEASURING 40' X 20 X 8'. NO RIDER SEAM WAS PRESENT BUT THERE IS EVIDENCE OF WATER ABOVE. FALL IS APPROX 500' OUTBY FACE. FALL DISCOVERED DURING WEEKLY EXAM OF AIRWAYS. AIR FLOW NOT AFFECTED