A ROOF FALL OCCURRED IN THE 9TH EAST #3 ENTRY AT#161 CROSSCUT. THE FALL WAS 18' LONG 25' WIDE AND 8' HIGH. IT DIDN'T AFFECT VENTILATION,TRAVEL, DAMAGE EQUIPMENT OR CAUSE ANY INJURY. THE AREA WAS BOLTED WITH 8' POINT ANCHOR BOLTS. THE FALL OCCURRED WHEN THE MINE WAS IDLE DURING CHRISTMAS SHUTDOWN.