spaceplasma: Upshot-Knothole Grable was a nuclear weapons test conducted by the United States as part of Operation Upshot-Knothole. The codename Grable was chosen because the letter Grable is phonetic for G, as in “gun”, since the warhead was a gun-type
spaceplasma: Upshot-Knothole Grable was a nuclear weapons test conducted by the United States as part of Operation Upshot-Knothole. The codename Grable was chosen because the letter Grable is phonetic for G, as in “gun”, since the warhead was a gun-type
