A roof fall occurred in the 2 North Panel in #1 entry in 1/2 the pillarline between cross-cut #27 and cross-cut #28 continuing through 1/2 the intersection of cross-cut #29 measuring 80ft. x 19ft. x 5ft. This area was mined in August 2004 and supported with 5ft. fully grouted roof bolts. This fall was caused by an undetected slip.