Keywords: "Loading concrete into 2-yd. bottom dump buckets at Six Companies' low level concrete mixing plant. Buckets are... - NARA - 293633.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 293633 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-BC21128 Other versions <gallery> File Loading_concrete_into_2-yd _bottom_dump_buckets_at_Six_Companies'_low_level_concrete_mixing_plant _Buckets_are _-_NARA_-_293633 tif tif File Loading_concrete_into_2-yd _bottom_dump_buckets_at_Six_Companies'_low_level_concrete_mixing_plant _Buckets_are _-_NARA_-_293633 jpg jpg </gallery> NARA-cooperation PD-USGov Construction vehicles in the United States Hoover Dam Six Companies Inc concrete mixing plants at Hoover Dam construction site low level |