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VIENNA: Iran has begun enriching uranium with the second of three cascades, or clusters, of advanced IR-6 centrifuges recently installed at an underground plant at Natanz, a report by the UN nuclear watchdog seen by Reuters said on Wednesday.
Like the first of those three cascades of up to 174 machines each, the second is enriching uranium to up to 5 percent fissile purity and the third has not been fed with nuclear material, the confidential report to member states said. A separate report on Monday said the first cascade had been brought onstream.