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Continue to ChatSpearfish and Centaur Mine Map - Lawrence County, SD https://www.yellowmaps.com/usgs/topo.cfm?map=sd-1264721-spearfish-and-centaur-mine
Spearfish and Centaur Mine Map - Lawrence County, SD https://www.yellowmaps.com/usgs/topo.cfm?map=sd-1264721-spearfish-and-centaur-mine