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Continue to ChatDolly Number One Mine Map - Boulder County, CO https://www.yellowmaps.com/usgs/topo.cfm?map=co-1683448-dolly-number-one-mine
Dolly Number One Mine Map - Boulder County, CO https://www.yellowmaps.com/usgs/topo.cfm?map=co-1683448-dolly-number-one-mine