A roof fall occurred at Block#137 Track entry/#6 entry in a intersection plus approx. 15' each way past the rib line of cross-cut. Roof was slate-fell approx. 8' H. X 18"" W. approx. 45' to 50' in L. Area had been bolted with 6' torque tension bolts. Area was developed approx. 9/1/2008.