A unplanned roof fall occurred in the #6 Entry at spad # 2322. Fall is 7,200' from active 001-0/002-0 section. Area was initially supported with 5' torque tension bolts. Fall meas. 20' L. X 20' W. X 6' H. Ventilation and passage of persons were not affected. Fall will not be rehabilitated. State and Federal agencies were notified immediately.