Summary of Properties of Basal Till in Ozaukee and Washington Counties, Wisconsin Open-file report; contains unpublished data that has not yet been peer-reviewed. Surficial Geology Data and Resources WOFR1996-06 Summary of Properties of Basal Till in Ozaukee and Washington Counties, Wisconsin Mickelson, D.M.; Syverson, K.M.; 1996 Report: 9 p. Download Related Collections Open-File Report View Open-File Report