On the #3 mains section a roof fall occurred in the #48XC, #11 intersection when the CM cut into this area from the #49 XC. The fall occurred in the 3-way intersection that was bolted w/6' fully grouted bolts with 4-12' post tension cable bolts. The cut that happened at the intersection had a slip running through them. The fall was appox 17'X17' X 10-16' high. H20 present.