DURING THE PRE-SHIFT EXAMINATION A FALL WAS DISCOVERED ABOUT 1,600 ' OUTBY THE WORK SECTION. THE FALL IS IN THE NO.4 ENTRY AT SURVEY STATION NO.47 AND MEASURED APPROXIMATELY 25'LONG, 20'WIDE, 5 TO 8'THICK. THERE WERE NO INJURIES OF EQUIPMENT INVOLVED. VENTILATION WAS NOT AFFECTED.