According to a confidential International Atomic Energy Agency (IAEA) report, Iran plans to install more than 6,000 additional centrifuges at its Natanz and Fordow uranium enrichment plants. The decision is a response to a recent censure of Iran by the IAEA board. The centrifuges will be installed in 32 cascades of more than 160 machines each and will include a large cascade of 1,152 advanced IR-6 centrifuges in the Pilot Fuel Enrichment Plant at Natanz.