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nov 13, 1953 - Soviet tests H-bomb

Description:

the Soviet Union tested its first fusion-based device on a tower in central Siberia. The bomb had a yield of 400 kilotons. ... On November 22, 1955, the Soviet Union exploded its first true hydrogen bomb at the Semipalatinsk test site. It had a yield of 1.6 megatons.

Added to timeline:

26 Apr 2021
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Date:

nov 13, 1953
Now
~ 71 years ago