ROOF FALL HAS OCCURRED AT THE #43 Xcut ON THE SOUTH MAINS ""A"" BELTLINE. FALL IS APPROX. 25 FT L X 48 FT W BY 8 FT H. THE AREA WAS BOLTED WITH 8 FT INSTALL II BOLTS & RESIN W/METAL STRAPS & WIRE SCREEN. FALL DID NOT AFFECT ESCAPEWAYS/VENT. CAUSE WAS FAILURE OF BEAM CREATED BY ROOF BOLTS. COMPLIANCE WITH RULES/REGS,PROTECTIVE EQUIP, MINING EQUIP/SYSTEMS NOT A FACTOR.