A roof fall occurred in the #9 seam mine in the Main North at crosscut #21 in the intersection of #4 entry and continuing through the pillarline toward #5 entry measuring appoximately 45ft. long x 19.5ft. wide x 8ft to 10ft. high. This area was supported by 6ft. tension rebar bolts, 9ft. mega bolts and 12 ft. cable bolts.