Search for all of "Tunnels", all of "Standard Oil Co Of California", all of "Diversion Tunnels", all of "Concrete Pouring Forms"

Grid | List | Tile

      Title Description
1 Object thumbnail
Construction of Hoover Dam diversion tunnel and portal "View of upper portals tunnel #1. showing R.R. trestle and gate works." (inscription on back of photo) Concrete pouring forms are visible in the diversion tunnel.

Subscribe to this Search