Dead weight test on one of Six Companies' 20-ton cableways. Span is designed to a 20-ton capacity and is being tested with concrete block 26 tons in weight.; Scope and content: Photograph from Volume Two of a series of photo albums documenting the construction of Hoover Dam, Boulder City, Nevada.
Size: 4159px × 6010px
Photo credit: © Tango Images / Alamy / Afripics
License: Licensed
Model Released: No
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