1957 - Nevada Test Site
Operation Plumbbob was conducted at the Nevada Test Site (NTS) from May through October of 1957. It was the sixth test series at NTS and consisted of 29 tests. Six of these were safety tests, and two did not produce any nuclear yield. This series addressed several objectives, including tactical weapon proof tests, safety tests, and component and mockup testing for thermonuclear systems to be detonated in Hardtack I, among other things.
During Plumbbob 16,000 DOD personnel participated in the Desert Rock VII and VIII exercises.
The LASL shots were named for deceased scientists, the UCRL shots were named for North American mountains.