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| View Original: | "Automatic_scale_dials_and_cement_batchers_at_Six_Companies'_low_level_concrete_mixing_plant."_-_NARA_-_293626.tif (3000x2095) | |||
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| Keywords: "Automatic scale dials and cement batchers at Six Companies' low level concrete mixing plant." - NARA - 293626.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 293626 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 1932-04-01 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-BC21121 yes Other versions <gallery> File Automatic_scale_dials_and_cement_batchers_at_Six_Companies'_low_level_concrete_mixing_plant _-_NARA_-_293626 tif tif File Automatic_scale_dials_and_cement_batchers_at_Six_Companies'_low_level_concrete_mixing_plant _-_NARA_-_293626 jpg jpg </gallery> NARA-cooperation PD-USGov NARA TIF images with categorized JPGs | ||||