Air purifier and staircase at a similar base. From Library of Congress, Prints and Photographs Division, Historic American Engineering Record [HAER MN-100-68]
The car elevator in 1938. Courtesy MNHS.org
1952 Explosion. Taken from Eastern Elevator (now Richardson) looking over the ruined copula of Saskatchewan Pool 4B. Noticed the scorched face of 4A, which appears to still be smoking when this was taken!
Mitchell Sugar Mill, 1920, Colorado State Library
Postcard from 1915 showing the plant. Published by the local drug store!
Eureka Mill, 1950, Wolle, Muriel Sibell, Denver Public LIbrary
The cover of an old tour brochure.
Occidental, July 1996 (LaFontaine Collection)
A map of the mines overlaid with the plant (now demolished).