Workers excavate, level and dig out tunnels on the mountain slopes before laying railroad track.
This photo shows the building the railroad trestle bridge to connect the railroad to Cerro Negro.
Once the railroad was in place, development moved rapidly.
The camp continued to grow, with the construction of a hospital, a model for the time, a fire department and a social club as well as a new smelter and other industrial buildings. In 1916, Kennecott Copper Company acquired Braden and retained ownership until 1967.