Browse Items (16 total) Tags: placer mine Browse All Browse by Tag Search Items Browse Map Sort by: Title Creator Date Added / 2 pages Placer Mines, William G. Chamberlain photo showing mining operations Chamberlain, William G. 1870-1880 Mineral Park Mine machinery in Park County, Colorado, 1945 1945 Mineral Park Mine in Park County, Colorado, 1945 1945 Mineral Park Mine in Park County, Colorado, 1945 1945 Miners working the Mineral Park Mine in Park County, Colorado, 1945 1945 Mineral Park Mine in Park County, Colorado, 1945 1945 Sort by: Title Creator Date Added / 2 pages Output Formats atom, dc-rdf, dcmes-xml, json, omeka-xml, rss2