There are still pockets of this. In the big US Navy shipyards, the exotic metals welders are not known for living very long.
https://muse.jhu.edu/article/947016
https://www.ourmidland.com/lifestyles/article/Throwback-Dow-...
https://www.nytimes.com/1974/04/02/archives/50-pickets-at-do...
There are still pockets of this. In the big US Navy shipyards, the exotic metals welders are not known for living very long.