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| View Original: | "Looking_down_into_aggregate_conveyor_at_Six_Companies'_low_level_concrete_mixing_plant."_-_NARA_-_293644.jpg (3000x2097) | |||
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| Keywords: "Looking down into aggregate conveyor at Six Companies' low level concrete mixing plant." - NARA - 293644.jpg Scope and content Photograph from Volume Two of a series of photo albums documenting the construction of Hoover Dam Boulder City Nevada General notes 293644 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 1932-05-02 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-BC21177 Other versions <gallery> File Looking_down_into_aggregate_conveyor_at_Six_Companies'_low_level_concrete_mixing_plant _-_NARA_-_293644 tif tif File Looking_down_into_aggregate_conveyor_at_Six_Companies'_low_level_concrete_mixing_plant _-_NARA_-_293644 jpg jpg </gallery> NARA-cooperation PD-USGov Six Companies Inc concrete mixing plants at Hoover Dam construction site low level Views from above | ||||
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