Operation Hardtack 1 Nuclear Test

In 1958, the United States conducted a series of nuclear tests known as Operation Hardtack I in the Pacific Ocean, aimed at studying the effects of atomic explosions in different environments. Among the most striking was an underwater detonation at Enewetak Atoll in the Marshall Islands, where a nuclear device was exploded beneath the surface to observe how water, shock waves, and radiation would behave in a marine setting. The blast created a towering column of water thousands of feet high and

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Operation Hardtack I, B-57 Canberra flying near a nuclear explosion, 1958 | Militaria

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