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Iran’s Centrifuges: Models and Status

Iran possesses thousands of gas centrifuges that are the mainstay of its nuclear program. Gas centrifuges spin uranium hexafluoride gas (UF6) to separate uranium isotopes suitable for nuclear fuel, a process known as uranium enrichment. The number and capacity of these machines determine Iran’s “breakout” time: how long it would take Iran—if it decided to do so—to produce the fuel for a small nuclear arsenal. The machines are also key to Iran’s ability to “sneakout” by producing nuclear weapon fuel at secret sites.