1. Britain's Policies on Fissile Materials: The Next Steps
... the quantities currently held in weapons and in stocks, although the margins of error are less than with HEU. All information on military plutonium in Britain remains classified. Calder Hall and Chapelcross Britain's plutonium production began at Windscale (later renamed Sellafield) in 1951. Between 1951 and 1957, around 400 kilograms of weapon-grade plutonium were discharged from the two original ... 3303 Estimated plutonium content (tonnes) 46 18 Source: David Albright, Frans Berkhout and William Walker, SIPRI, Plutonium and Highly Enriched Uranium 1996 (Oxford University Press: Oxford...
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- Grade Level: Undergraduate