Word: coolant
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Dates: during 1952-1952
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...rich in fissionable 11-235. Around the core is a "fertile blanket" of 11-238, the spent metal that remains when U-235 is extracted from natural uranium to make atom bombs. Through both blanket and core circulates a sodium-potassium alloy that is liquid at ordinary temperatures. This coolant carries away the heat of the nuclear reaction. The fluid metal leaves the reactor at 660° F., and produces enough steam to generate 250 kw. of power...