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Since the discovery in 2002 that Iran was secretly working on uranium enrichment, the nation has expanded that operation to the point where it has thousands of centrifuges churning out enriched material — the potential source of both nuclear fuel and fissile warhead material.
Iran also has started producing uranium at a higher level than its main stockpile — a move that would jump start the creation of highly enriched, weapons grade uranium, should it chose to go that route. And it is moving its higher-enriched operation into an underground bunker that it says is safe from attack.
David Stringer contributed to this report from London.
George Jahn can be reached at http://twitter.com/georgejahn
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