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Continue to ChatDouglas Tailings Dike Map - St. Louis County, MN https://www.yellowmaps.com/usgs/topo.cfm?map=mn-1777114-douglas-tailings-dike
Douglas Tailings Dike Map - St. Louis County, MN https://www.yellowmaps.com/usgs/topo.cfm?map=mn-1777114-douglas-tailings-dike