A roof fall occurred in the #9 seam in the 1st West Sub-Main at crosscut #7 starting at edge of the pillar line between the #2 and #3 entries and extending half way into the pillar line between #3 and #4 entries. The fall measured approximately 80'x18'x10'. The area was supported with 6' tension rebar roof bolts and 8' double lock mega bolts.