AN UNINTENTIONAL ROOF FALL OCCURRED AT THE MILLENNIUM PORTAL, ON THE 6N HEADGATE, ENTRY #3, 3370 NORTH AT CROSSCUT #47 (BELT ENTRY). THE FALL WAS APPROXIMATELY 20' LONG, 18' WIDE & 15' THICK. THE FALL DID NOT AFFECT VENTILATION OR PASSAGE OF WORKERS. THE FALL WILL NOT BE CLEANED UP.