A ROOF FALL MEASURING 70' IN LENGTH, 19' WIDE AND 5.5' THICK WAS DISCOVERED IN THE NO. 7 INTAKE ENTRY. THE ROOF FAILED DUE TO UNDETECTABLE SUBNORMAL CONDITIONS ABOVE THE 48"" RESIN ROOF BOLTS. THE AREA WAS DEVELOPED JUNE 2003. THE FALL DID NOT AFFECT VENTILATION AND THE INTAKE ESCAPEWAY WAS REROUTED TO PERMIT SAFE PASSAGE. PERIMETER OF THE FALL WAS RESUPPORTED.