A FALL OF ROOF OCCURRED IN THE 1ST NE SUBMAINS IN THE #2 ENTRY AT X-CUT #6 APPROX 16,500 FT OUT BY THE UNIT. THE FALL WAS APPROX 35' LONG BY 18'WIDE BY 6'-10' HIGH. THE AREA WAS SUPPORTED WITH 6' TENSION REBAR BOLTS AND 2 ROWS OF TIMBERS. THE APPARENT CAUSE WAS AN UNDETECTED SLIP WITH WATER.