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Greenhouse George. 225 kilotons.

George is said to have "lit a fusion match with a fission blast furnace". The yield of the fission bomb that ignited George's fusion fuel was well in excess of 200 kilotons, the highest yield fission bomb detonated to that date. The actual fusion yield of George likely probably did not exceed 1 kiloton.

Ivy Mike, 10 megatons, was the first true fusion bomb. About 1 megaton of that was fusion.

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12y ago

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