On 08/18/2007, an unintentional roof fall occurred at cross cut # 13, on the working section 001-0 in entry #2 in the 2nd East panel, off the 1st South Sub main. The roof fall measured 35' long, 18' wide and 12' thick. The fall will not be cleaned up. The fall appeared to be broken stack rock. The area was bolted with 6' and 10' point anchor roof bolts.