Keywords: "Power shovel loading muck trucks in heading of upper Nevada penstock header." - NARA - 293856.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 293856 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 1933-05-10 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-BC21669 Other versions <gallery> File Power_shovel_loading_muck_trucks_in_heading_of_upper_Nevada_penstock_header _-_NARA_-_293856 tif tif File Power_shovel_loading_muck_trucks_in_heading_of_upper_Nevada_penstock_header _-_NARA_-_293856 jpg jpg </gallery> NARA-cooperation PD-USGov Hoover Dam construction equipment Dump trucks in the United States 1933 Hoover Dam |