On 9/17/2007, an unintentional fall of roof occurred in # 5 entry at cross cut # 28 on the 2nd West Sub Main off the 3rd South Sub Main. The fall was approxmiately 22' long x 18' wide x 6' thick. The area was bolted with 6' & 10' point anchor bolts. The fall was laminated stack rock and will not be cleaned up.