A ROOF FALL OCCURRED IN THE OLD WORKS OFF 3 M-2 RETURNS. FALL IS APPROX 10' HIGH BY 19' WIDE BY 150' LONG. AREA BOLTED WITH 42"" RESIN GROUTED RODS. VENTILATION O.K. FALL WILL NOT BE CLEANED UP . CAUSE OF FALL WAS BEAM FAILURE CREATED BY ROOFBOLTS AND A PILLARED AREA BESIDE AREA THAT FELL IN. FALL IS LOCATED 9 ENTRY #3 ROOM BY STATION 18392.