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1952 the first fusion bomb was built and tested in the Ivy Mike test shot. This device (called the Sausage) was 80 feet tall 20 feet in diameter with a 2 foot thick steel wall casing, it was liquid fueled with a cryogenic mix of deuterium & tritium.

1954 the first deliverable fusion bomb was built and tested in the Castle Romeo test shot. This device (called Runt) was 15 feet long and 6 feet in diameter, it was dry fueled with lithium deuteride. This device became the MK-17/24 bomb carried by B-36 heavy bombers. Note: the earlier and higher yield Castle Bravo test shot device was also small enough to be deliverable, but was not built in a weaponizable configuration, it like Ivy Mike was a physics experiment and they did not want to add anything that might interfere with measurements.

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12y ago
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11y ago

August 6, 1945 on Hiroshima, and Nagasaki

The first atomic bombs were used against Japan but the H-bomb was only developed in the 1950s and has not been used offensively.

1952 Enewetak island in the Pacific (not in war).

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11y ago

Us-1952ussr-1953

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Q: When was the first h-bomb dropped?
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