A roof fall occurred in the 1 South, crosscut #18 in part of the intersection of #5 entry and extending inby toward the face and covered the back 10' of a roof bolter. The fall measured approximately 35' to 40'x3'to 19'x7' to 8'. The area was supported with 3' fully grouted bolts and 5' fully grouted bolts. A slip was determined to be the cause of the fall.