A FALL OF ROOF OCCURRED IN THE WEST MAIN ENTRIESIN THE #4 ENTRY AT X-CUT #8 APPROX 9000 FT OUT BY #1 UNIT. THE FALL WAS APPROX 20' BY 14' BY 6' THE ARM WAS SUPPORTED WITH 6 FT FULLY GROUTED BO LTS AND SUPPLEMENTAL SUPPORTS OF TIMBERS. DATE OF DEVELOPMENT WAS 4-6-96 CAUSE OF FALL WAS A HIDDEN BREAK IN ROOF STRATA.