The technology for separation of zirconium and hafnium is the key to prepare reactor-grade productions of zirconium and hafnium.

锆铪分离技术是生产核级锆和核级铪的核心技术。

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On Monday,Iran formally notified the IAEA of its response to the nuclear-fuel swap deal, under which it would ship some low-enriched uranium to Turkey in return for higher grade fuel for a Tehran research reactor.

VOA: standard.2010.05.25

(Sound) Amid loud acclamations of approval, top hardline Iranian cleric, Hojatoleslam Ahmad Khatami warned the West that Tehran will produce its own high-grade uranium for a medical research reactor, if the UN International Atomic Energy Agency refuses to provide the fuel.

VOA: standard.2009.11.28

Fourteen years of no-new-nuke-orders later, uranium mining's drop in popularity came with the post-Cold War decision to buy Soviet weapons and turn them into reactor-grade fuel.

FORBES: Yellowcake Fever

In a major and welcomed development, Russia announced that it will close its last weapons-grade plutonium production reactor.

WHITEHOUSE: Nuclear Security Summit: Presidential Press Conference

That reactor type is not ideal for producing weapons-grade plutonium, but all reactors produce plutonium that could be used in a nuclear explosion.

BBC: Yongbyon restart: North Korea ramps up nuclear tension