Beginning in the late 1950s, the U.S. met this challenge by developing nuclear batteries known as radioisotope thermoelectric generators (RTGs) and producing plutonium-238 (Pu-238 ... For example, ...
IFLScience on MSN5mon
US Produces First Plutonium Pit For Nuclear Weapons Since 1989“This first fully qualified plutonium pit for the W87-1 nuclear warhead was “diamond stamped” after meeting all requirements, ...
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