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Features of two elevators of 5000-lb capacity, traveling at speed of 500 ft per min.
Features of two elevators of 5000-lb capacity, traveling at speed of 500 ft per min.
Boulder dam elevators
Reclamation Era
Spearman, R.B. (author)
Reclamation Era ; 27
1937
2 pages
Article (Journal)
English
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