View shows the connected, shed roofed mining buildings of the Boulder County mill in Cardinal, Boulder County, Colorado. It produced both gold and silver and was completely covered to weatherize against the storms that blew off the high range....
Mine buildings--Colorado--Boulder County--1920-1940.; Boulder County (Colo.)--1920-1940.; Mills--Colorado--Boulder County--1920-1940.; Mining--Colorado--Boulder County--1920-1940.
[between 1920 and 1940?]
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