Discovered a roof fall in the 1st NW Parallel Butt 55' inby station #112. The fall was from #4 intersection to #5 intersection about 70' long, 8'-16' high. Area was bolted with 6' fully grouted & 4' fully grouted & 2 8' cable bolts. In return 1000' from loading section 1st NW Mains. Did not disrupt ventilation or escapeways. Area was dangered off on all sides of fall.