Upshot–Knothole Grable was a nuclear weapons test conducted by the United States as part of Operation Upshot–Knothole and detonation happened 19 seconds after its deployment at 8:30am PDT on May 25, 1953, in Area 5 of the Nevada Test Site. Why was it codenamed Grable? Well, it was chosen because the letter Grable is phonetic for G, as in “gun”, since the warhead was a gun-type fission weapon. Read more to see what it looks like after neural networks have upscaled and colorized the footage.
The bomb was detonated over 11,000 yards away from the gun it was fired from, over a part of the Nevada Test Site known as Frenchman Flat. If you look closely, you’ll also see the various vehicles on the desert floor which are extremely small compared to the fireball of the blast. Tools used for this footage include DeOldify and Topaz Video Enhance AI.
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