A roof fall was found on the South Mains ""A"" mainline belt inby 51 cross cut. Fall approx. 50 feet long, by 15 feet wide by 2 to 12 feet high. Area was bolted with Install II bolts and resin assisted. The supplemental support consisted of bacon straps, wire mesh screen,wood cribs and wooden beams. Cause of this fall was weathering of the roof.