AN UNINTENTIONAL ROOF FALL WAS DISCOVERED 60' INBY MARKER 26+40 OF THE #3 ENTRY OF WEST MAINS SECTION (MMU074). THE AREA THAT FELL WAS IN A BAD ROOF AREA. THERE IS NO EFFECT ON VENTILATION OR HAULAGE. THE AREA IS DANGERED OFF WITH ALL APPROACHES SUPPORTE. NO DAMGER OR HAZARD EXIST AT THIS TIME.