Golden Fleece Mine, between 1870 and 1890. Courtesy of Denver Public Library.
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Crew of one of the Canadian Northern Elevators, circa 1900.
Harbor Scene (Gallagher, Duluth Public Library)
Port Arthur Row, 1977. Image Credit: Thunder Bay Archives.
Note the two tunnels behind the steam plant in this 1930s image from MNHS.org.
The lower portal, 1910. Courtesy Minnesota Historical Society.
Gering’s Evaporators, 1916, Colorado State Library
Saskatchewan Wheat Pool #4-A loading a vessel. Image credit: Thunder Bay Archives.
Mitchell Sugar Mill, 1920, Colorado State Library
A map of the mines overlaid with the plant (now demolished).