A unintentional roof fall occurred at this location. Approx. 8000 ft off#1 Section, SS# 312, Left return. No ventilation was blocked, no escape way was blocked. Fall was approx. 20 wide 20 long and 8 to 10 high and will be cribbed off and not cleaned up. Fall was found during weekly examination. This area was mined 2/2003 and supported with 5 torque tension bolts.