On June 8, 1958, during Operation Hardtack I, the Los Alamos Laboratory and the U.S. Department of Defense conducted an underwater nuclear test known as the “Umbrella” event at Enewetak Atoll. 💥🌊 Detonated at a depth of 150 feet, the explosion had a yield of 8 kilotons, producing a massive water column and shockwave captured in rare footage. This test was part of a series aimed at studying the effects of nuclear detonations in shallow water, crucial for understanding underwater weapon impact a
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