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Report on a proposition to construct a 15-mile tunnel through the Continental Divide in Colorado for the American Mines Syndicate Company, Clear Creek and Summit counties

Van Wagenen, Theodore F. (Theodore Francis)
American Mines Syndicate Company
United States. Bureau of Mines
Research Projects
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Embargo Expires
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In copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).
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