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Desert Rock IV exercise and Charlie atom bomb, 1952. This footage soldiers observing the rising mushroom cloud following the moment of detonation. Soldiers are also shown being tested for contamination with radioactive materials. This nuclear weapons test took place on 22 April 1952, at the Nevada Test Site, USA. Codenamed Charlie, it was the 3rd test in the Operation Tumbler-Snapper series. It was detonated following an air drop, and had a yield of 31 kilotons. This test was also part of the Desert Rock exercises, where US Army troops undertook nuclear battlefield training. These troops are taking part in the Desert Rock IV exercise.
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