Mitchell Sugar Mill, 1920, Colorado State Library
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The remains of Unit 5…
![Pit doors on a similar base. From Library of Congress, Prints and Photographs Division, Historic American Engineering Record [HAER MN-100-98]](https://i0.wp.com/substreet.org/wp-content/uploads/2017/08/MS40-pit-c-doors-closed-Library-of-Congress-Prints-and-Photographs-Division-Historic-American-Engineering-Record-HAER-MN-100-98.jpg?w=322&h=322&crop=1&ssl=1 "Decommissioned Nike Base (HAER-Library of Congress)")
Pit doors on a similar base. From Library of Congress, Prints and Photographs Division, Historic American Engineering Record [HAER MN-100-98]
Dock 1, Allouez, August 1941. Library of Congress, Prints & Photographs Division, FSA-OWI Collection, (LC-USF34- 063775-D).
Occidental (left) and Peavey (right), June 25th, 1997 (LaFontaine Collection)
Two miners use hydraulic hammers to fill a waiting cart.
Postcard from 1915 showing the plant. Published by the local drug store!
![Escape hatch on a similar base. From Library of Congress, Prints and Photographs Division, Historic American Engineering Record [HAER MN-100-92]](https://i0.wp.com/substreet.org/wp-content/uploads/2017/08/MS40-pit-c-doors-Library-of-Congress-Prints-and-Photographs-Division-Historic-American-Engineering-Record-HAER-MN-100-92.jpg?w=322&h=322&crop=1&ssl=1 "Decommissioned Nike Base (HAER-Library of Congress)")
Escape hatch on a similar base. From Library of Congress, Prints and Photographs Division, Historic American Engineering Record [HAER MN-100-92]
Whiting Mine on a 1909 Sanborn map.
Bureau of Mines’ Minneapolis campus, seen in the 1970s. From NPS 2009.