ISIS: Iran starts more efficient uranium enrichment
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Iran has begun using extra equipment installed earlier this year to enrich uranium more efficiently, stepping up its nuclear work despite UN sanctions, a Western think-tank said on Friday.
The Institute for Science and International Security said on its website that Iran was now using a second set, or "cascade", of centrifuge machines at its Natanz pilot plant. It did not disclose the source of its information. (Reuters)
