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The smallest warhead created for the US military was the W54 Davy Crocket which used 23kg of Pu239 and had a yield equivalent to 10-20 tons of TNT. Video of the Davy Crocket being fired. Accord...
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System
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2021-03-30T23:53:20Z (about 3 years ago)
Source: https://worldbuilding.stackexchange.com/a/15288 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/