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When president truman wanted them to create the H bomb
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They tested the first atomic bomb, their yield was about 25 kilotons
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When the H bomb "Mike test" was first tested, It was tested it was about 100 miles wide and 25 feet miles high.
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They tested their first fused bomb on the a tower in central serbia, it had a yield of 400 kilotons, it wasn't like the atomic bomb that the U.S used but it was usable and fast and small enough to drop from a plane.
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When the Bravo test was dropped on an island called bikini atoll
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churchill decided that britain should go ahead and with the creation of the hydrogen bomb devlevtompement.
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After the bravo test the soviets exploded their first hydrogen bomb at the semipalatinsk test site, its yield was 1.6 megatons.
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It was over christmas island in the pacific, the yield was 1.8 megatons.
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this was the beginning of soviet union hydrogen bomb testing culmination, it was explosion of 58 megatons
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10 Years later the government, the first thyroid tumor appeared, of the under the age of 12, 90 %percent of them got tumors.