A roof fall occurred in the 1st Main South belt line between x-cut 41-42 in the pillar line #5 neutral entry. The fall meas. 35' x 6' x19.25' and was caused by a hidden slip in the mine roof. The area was supported by 6' tension glue bolts and was mined in 8/2006. There were no injuries and no equipment involved and ventilation was not affected.