AT APPROX 9:30AM A ROOF FALL WAS DISCOVRED 2000FT OUTBY WORKING FACE IN #2 ENTRY AT SS#616 IN INTAKE AIRCOURSE. FALL MEASURED 5'HX18'WX40'L. ROOF WAS SANDSTONE AND HAD BEEN PREVIOUSLY SUPPOR TED WITH 5' INSTALLED BOLTS CINT ANCHOR. AREA WAS BROKED OFF AND WILL NOT BE CLEARNED UP. NO PERSONS, EUQIPMENT OR VENTILATION EFFECTED.