[Ed. – Iran has added a second centrifuge cascade enriching uranium to 60% – an enrichment level for which there is no application, other than proceeding to the weapons-grade level of 93.5% purity. The step from 60% to 93.5% is a technicality at this point, not a hurdle.]
Iran has accelerated its enrichment of uranium to near weapons-grade, the U.N. atomic watchdog said in a report on Tuesday seen by Reuters, a move raising tensions with the West as both sides seek to resume talks on reviving Tehran’s nuclear deal.
Iran increased the purity to which it is refining uranium to 60% fissile purity from 20% in April in response to an explosion and power cut at its Natanz site that damaged output at the main underground enrichment plant there. …
In May, the International Atomic Energy Agency reported that Iran was using one cascade, or cluster, of advanced centrifuges to enrich to up to 60% at its above-ground pilot enrichment plant at Natanz. The IAEA informed member states on Tuesday that Iran was now using a second cascade for that purpose, too.