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In 1971, on which island was the largest underground test of nuclear weapons ever conducted by the USA?

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In 1971, on which island was the largest underground test of nuclear weapons ever conducted by the USA?
posted Nov 7, 2022 by Mishthy Mukherjee

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Amchitka
There were nuclear weapons tests at all of these: Christmas Island (by the British) 1957/58; Bikini Atoll (by the USA) 1946-58 but none in-ground; Mururoa Atoll (by the French) 1966 to 1996. The 1971 test, codenamed Cannikin, on Amchitka in Alaska was 250 times the yield of the bomb that was dropped on Nagasaki.

answer Nov 8, 2022 by Anuradha Tabyal
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