Keywords: Looking into location of high level concrete mixing plant. Aggregate hoppers for plant seen in background. Extension... - NARA - 293786.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 293786 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 1932-12-31 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-BC21495 Other versions <gallery> File Looking into location of high level concrete mixing plant Aggregate hoppers for plant seen in background Extension - NARA - 293786 tiff tif File Looking into location of high level concrete mixing plant Aggregate hoppers for plant seen in background Extension - NARA - 293786 jpg jpg </gallery> NARA-cooperation PD-USGov Cableway pylons Hoover Dam Pylons in the United States Hoover Dam Hoover Dam construction railways Steam shovels high level |