http://www.sco.wisc.edu/parcels/tools/COPDissolve/CHANGELOG.txt Class of Property Dissolve Toolset - Change Log Initial Release: December 18th, 2015 (12-18-15) -Initial release, no changes made. CHANGE: January 22nd, 2016 (01-22-16) -Altered tool #1 to be able to process class 'W9' – MFL Ferrous Mining