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| View Original: | "View_looking_upstream_through_Black_Canyon_showing_downstream_cofferdam_and_rock_backwash_barrier._Excavation_in_dam..._-_NARA_-_293823.tif (3000x2100) | |||
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| Keywords: "View looking upstream through Black Canyon showing downstream cofferdam and rock backwash barrier. Excavation in dam... - NARA - 293823.tif Scope and content Photograph from Volume Two of a series of photo albums documenting the construction of Hoover Dam Boulder City Nevada General notes 293823 Local identifier Department of the Interior Bureau of Reclamation Engineering and Research Center 05/18/1981 - 03/04/1988 NARA's Rocky Mountain Region Denver NRGA Building 48 Denver Federal Center West 6th Avenue and Kipling Street Denver CO 80225-0307 1933-03-30 Record group Record Group 115 Records of the Bureau of Reclamation 1889 - 2008 Record group ARC 444 Photograph albums compiled 1903 - 1972 Series ARC 293611 File unit File unit ARC Variant control numbers NAIL Control Number NRG-115-CONSTPHO85006-BC21576 yes Other versions <gallery> File View_looking_upstream_through_Black_Canyon_showing_downstream_cofferdam_and_rock_backwash_barrier _Excavation_in_dam _-_NARA_-_293823 tif tif File View_looking_upstream_through_Black_Canyon_showing_downstream_cofferdam_and_rock_backwash_barrier _Excavation_in_dam _-_NARA_-_293823 jpg jpg </gallery> NARA-cooperation PD-USGov NARA TIF images with categorized JPGs Dam construction in the United States | ||||