Old School Hydro Development (US 1940's)

I was working with our new associate Alex the other day on a presentation we want to start giving at schools in the Metro Boston area. We got to talking about the paths to development in different countries and where the U.S. was infrastructure-wise in the early part of the 20th century. I found this great shot in the Shorpy Blog.

June 1942. Gas-welding a joint in a line of spiral pipe at the Tennessee Valley Authority's new Douglas Dam on the French Broad River.
June 1942. Gas-welding a joint in a line of spiral pipe at the Tennessee Valley Authority’s new Douglas Dam on the French Broad River.

via Shorpy – 100 year old photo blog