Keywords: Officials at Hoover Dam, Allis Chalmers Stainless Steel Turbine Runner for Unit N-4.jpg en Photograph of Bureau of Reclamation officials at Hoover Dam plsing in front of Allis Chalmers 115 000 HP turbine runner stainless steel for Unit N-4 Credit Bureau of Reclamation U S Department of the Interior Region 3 Boulder City Nevada P 45-301-11516 Louis R Douglas second from left 1962 Original photograph Credit Bureau of Reclamation U S Department of the Interior Region 3 Boulder City Nevada Bureau of Reclamation U S Department of Interior Region 3 PD-USGov Uploaded with UploadWizard People associated with the construction of Hoover Dam Douglass Louis R |