A ROOF FALL WAS FOUND BY THE FOREMAN IN THE EAST MAINS AT X-CUT #16 IN #1 ENTRY. IT ALSO GOES FROM XC #16 IN #1 ENTRY THROUGH THE PILLAR TOWARD #2 ENTRY. IT MEASURED APPROXIMATELY 200' X 20' X 6'. THE AREA WAS MINED IN MAY 2000 AND WAS SUPPORTED WITH 6' TENSION REBAR BOLTS AND TIMBERS. FALL WAS CAUSED BY AN UNDETECTED SLIP IN THE MINE ROOF.