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President Harry Truman moved nuclear bomb test site to Nevada.
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The Nevada Proving Grounds were founded, covering about 1,360 square miles.
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The first nuclear bomb was dropped on Frenchman Flat.
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900 atomic explosions occurred in the Nevada desert.
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The last above-ground nuclear test.
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The Soviet Union and US signed a treaty that forbid nuclear bomb testing above-ground.
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The last nuclear bomb test, code named ''Divider'', took place in the Nevada desert.