AN UNINTENTIONALY ROOF FALL OCCURRED IN THE 3 WAY INTERSECTION OF ENTRY #8 @ 31&10 6TH NORTH RETURN, THE FALL, 60' LONG, 18' WIDE AND 5' HIGH DID NOT IN PAIR VENTILATION OR IMPEDE TRAVEL. THE ROOF WAS SUPPORTED BY 4' GLUE, BOLTS INSTALLED BY OTHER CURRENT ROOF CONTROL PLAN. THE INTERSECTION WAS DEVELOPED FEB 2001.