An unplanned roof fall occurred in the #6 entry of the 001-0 section, this fall occurred at spad #4405, 2350' from active face. Area was developed March, 2010. Fall measures 35'L x 20'W x 5'High, area was supported by resin bolts. All entries have been breakered off. Passage of persons and ventilation was not affected. Fall will not be rehabilitated. Fed agencies notified immed.