A roof fall was discovered @ 10:05 PM on 12/18/05. Fall was in belt entry of MMU 064-0. It was confined to the belt entry & there was no damage to ventilation controls or passage of personnel. There were no injuries. Fall was located @ 25+35 & it fell on the FCT low belt framing outby the tailpiece. Fall was approx 70'L x 20'W x 8'H. Area was supported w/6' resin bolts.