DURING THE PRE-SHIFT OF THE 1 EAST SUB-MAINS. A ROOF FALL WAS DISCOVERED INT HE NO. 6 HEADING. THE FALL OCCURRED AT SURVEY STATION NO. 203 AND MEASURED APPROX 90'LX20'LWX4 TO 10'H. THERE WER E NO INJURIES OR EQUIPMENT INVOLVED AND VENTILATION WAS NOT AFFECTED.