AN UNPLANNED ROOF FALL OCCURRED IN THE LW SETUP ENTRIES (LW BLEEDER) AT SPAD 2039. THE FALL MEASURED APPROX 120' X 20' X 12-15'. AREA WAS DEVELOPED IN SEPT. 2001 & WAS ~750' FROM THE ACTIVE FA CE. THERE WAS NO EQUIPMENT INVOLVED & THERE WERE NO PERSONNEL INJURIES. THE AREA WAS BOL;TED W/6' TORQUE TENSION BOLTS & WAS CRIBBED.