A roof fall occurred in the #9 entry of the 1st main north angle off the 2nd west, unit #6 MMU-067-0, spad #31+24, in the intersection. The fall was in a bad area, already cribbed out. The fall was approx 8'H x 18'W x 18'L. There was no equipment involved, no injuries and no disruptions to ventilation. The fall was discovered at 12:05 AM.