Diplomats on Monday confirmed a report that Iran has begun uranium enrichment at an underground bunker and said the news is particularly worrying because the site is being used to make material that can be upgraded more quickly for use in a nuclear weapon than the nation’s main enriched stockpile.
The diplomats said that centrifuges at the Fordo site near Iran’s holy city of Qom are churning out uranium enriched to 20 percent. That level is higher than the 3.5 percent being made at Iran’s main enrichment plant and can be turned into fissile warhead material faster and with less work.
The move was expected, with Tehran announcing months ago that it would use the Fordo facility for 20 percent production. Iran began to further enrich a small part of its uranium stockpile to nearly 20 percent as of February 2010 at a less-protected experimental site, saying it needs the higher grade material to produce fuel for a Tehran reactor that makes medical radioisotopes for cancer patients.
But with the time and effort reduced between making weapons-grade uranium from the 20-percent level, the start of the Fordo operation increases international fears that Iran is determined to move closer to the ability to make nuclear warheads, despite insistence by the Islamic Republic that it is enriching only to make reactor fuel. Its dismissal of findings by the International Atomic Energy Agency of secret experimental work on a nuclear weapons program also worries the international community.
Iran recently threatened to blockade the Strait of Hormuz, an important transit route for almost one-fifth of the oil traded globally. Tehran also has been angered by the West’s efforts to sanction Iran over its nuclear program, including a possible ban on European imports of Iranian oil.
Fordo’s location increases concerns.
The facility is a hardened tunnel and is protected by air defense missile batteries and the Revolutionary Guard. The site is located about 20 miles (32 kilometers) north of Qom, the religious nerve center of Iran’s ruling system. The semiofficial Mehr news agency quoted Iran’s nuclear chief, Fereidoun Abbasi, as saying Sunday that “the enemy doesn’t have the ability to damage it.”
Built next to a military complex, Fordo was long kept secret and was only acknowledged by Iran after it was identified by Western intelligence agencies in September 2009.
Two diplomats spoke to The Associated Press on condition of anonymity because their information was confidential and based on an inspection of Fordo last week by the International Atomic Energy Agency.
They said 348 machines were operating at Fordo in two cascades, the linked up configuration needed to enrich. Two other cascades were nearly assembled but not working, they said. The centrifuges appeared to be the standard old-generation machines in use at the main enrichment site at Natanz and not advanced, more efficient prototype versions.
About 8,000 centrifuges are operating at Natanz, where five years of enrichment have turned out enough material for several nuclear warheads.