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Continue to ChatSuperior Sand and Gravel Company Pit Map - Adams County, CO https://www.yellowmaps.com/usgs/topo.cfm?map=co-1703870-superior-sand-and-gravel-company-pit
Superior Sand and Gravel Company Pit Map - Adams County, CO https://www.yellowmaps.com/usgs/topo.cfm?map=co-1703870-superior-sand-and-gravel-company-pit