An unplanned roof fall occurred 3/28/12. There were no injuries, blocked escape ways or eq. damage due to fall. The fall dimensions are 85' L. X 7' H. X 18' W. The fall area has been dangered off and all approaches to the fall have been cribbed and timbered. Loc. of fall Old #5 zone, 2blks inby spad #8097 # 8 entry 41-42 blk.