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Natural uranium is made weapons-grade through isotopic enrichment. Initially only about 0.7% of it is fissile U-235, with the rest being almost entirely uranium-238 (U-238). They are separated by their differing masses. Highly enriched uranium is considered weapons-grade when it has been enriched to about 90% U-235. [citation needed]
Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235 U) has been increased through the process of isotope separation.Naturally occurring uranium is composed of three major isotopes: uranium-238 (238 U with 99.2732–99.2752% natural abundance), uranium-235 (235 U, 0.7198–0.7210%), and uranium-234 (234 U, 0.0049–0.0059%).
Sequoyah Fuels Corporation, a subsidiary of General Atomics, is a uranium processing company in the United States. United States Enrichment Corporation: United States Uranium enrichment United States Enrichment Corporation, is a uranium enrichment company in the United States. United Nuclear Corporation: United States Nuclear fuel cycle,
Iran is "dramatically" accelerating its enrichment of uranium to up to 60% purity, close to the roughly 90% level that is weapons grade, U.N. nuclear watchdog chief Rafael Grossi told Reuters on ...
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The nominal spherical critical mass for an untampered 235 U nuclear weapon is 56 kilograms (123 lb), [6] which would form a sphere 17.32 centimetres (6.82 in) in diameter. The material must be 85% or more of 235 U and is known as weapons grade uranium, though for a crude and inefficient weapon 20% enrichment is sufficient (called weapon(s)-usable).
North Korea has disclosed the first photos of a uranium enrichment site designed to produce weapons-grade fuel for its nuclear bombs. Here's what we know about its growing nuclear arsenal.
Urenco also owns a 50% interest in Enrichment Technology Company (ETC), a company jointly owned with Areva. ETC provides enrichment-plant design services and gas-centrifuge technology for enrichment plants through its subsidiaries in the UK (Capenhurst), Germany (Gronau and Jülich), the Netherlands (Almelo), France (Tricastin) and the U.S ...