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Mark 90 nuclear bomb
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The Mark 90 nuclear bomb, given the nickname "Betty", was a Cold War nuclear depth charge, developed by the United States in 1952.
Operation Wigwam test of a Mark 90 "Betty"
Operation Wigwam test of a Mark 90 "Betty"
Mark 90 casing in U.S. Navy Museum
Mark 90 casing in U.S. Navy Museum