Iran In Brief

Archive: October 2011

Debunking Gregory Jones Again

October 27, 2011

by David Albright and Christina Walrond

On October 18, Gregory Jones published a response to ISIS’s September 20 critique of his study on breakout timelines at the Natanz Fuel Enrichment Plant (FEP) in Iran. Jones maintains that Iran could fabricate 20 kg of weapon-grade uranium (WGU)—enough for one nuclear weapon—in two… Read More ›

Performance of the IR-1 Centrifuge at Natanz

October 19, 2011

Although the average monthly production of 3.5 percent low enriched uranium (LEU) has increased to about 150 kg/month, the number of centrifuges needed to produce this LEU has increased disproportionately compared to the previous year. During the last year, Iran has needed 5,860 IR-1 centrifuges to produce this amount of LEU. In the previous year, it would have needed only… Read More ›

Iran’s Advanced Centrifuges

October 18, 2011

Last summer, Iran began installing two cascades of advanced centrifuges at the Pilot Fuel Enrichment Plant (PFEP) at Natanz. As of August 28, 2011, according to the International Atomic Energy Agency (IAEA), Iran had installed 136 IR-2m centrifuges in cascade 5 and 27 IR-4 centrifuges in cascade 4. Iran started feeding 54 of the 136 IR-2m centrifuges with natural uranium… Read More ›

New Satellite Imagery of Iranian Nuclear Sites on Google Earth

October 11, 2011

Over the last several months, Google Earth has posted updated commercial satellite imagery over Iran which includes several nuclear sites such as the Arak heavy water reactor and heavy water production site, the Ardakan yellowcake production plant and the Gchine uranium mine and mill.

View the full report with new images here: Read More ›