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Shaftmen at the mouth of the vertical test shaft for examination of substrata at Norris Dam site. - NARA - 532672
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Redigera bild
Published by:
Creazilla
Författare:
Lewis Hine (1874–1940)
Källa:
commons.wikimedia.org
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historia
historisk
shaft
skiptag
high-resolution tiff images from the national archives and records administration
1933 in tennessee
construction of the norris dam
vertical transport infrastructure
MER SOM DETTA