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“Trinity” – 70 Years of the Nuclear Age

Seventy years ago today at 0529 hours and 21 seconds Mountain War Time (equivalent to today’s DST, 0729 Eastern Daylight Time), the military personnel and civilian scientists of the Manhattan Project succeeded in their goal of producing a nuclear explosive.

Trinity, the code name for the world’s first nuclear detonation, opened the nuclear age. Less than one month later, the United States used the first two nuclear weapons in combat against Japan in the attacks on Hiroshima (August 6, 1945) and Nagasaki (August 9, 1945).

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