Sand and Gravel, Construction site, status unknown · Hinsdale County, Colorado
UnknownSand and Gravel, ConstructionUndergroundUSGS MRDS
Section
What kind of site this is
Drawn as an underground mine, reached by a shaft or tunnel and worked along the ore. The ore color stands for sand and gravel, construction. Federal records note the kind of operation and its status, not its depth or layout, so this is a typical example rather than a survey of this site.