The Green Salt Project (also known as the \"Project 1-11\")^[1] is an alleged secretive Iranian entity focusing on uranium processing, high explosives and a missile warhead design. The Green Salt Project derives its name from uranium tetrafluoride, also known as green salt, an intermediate product in the conversion of uranium ore into uranium hexafluoride — a toxic gas that can undergo enrichment or purification into fuel for nuclear reactors or bombs.^[2] Uranium tetrafluoride has also been used as the source of metallic uranium for Magnox reactor fuel elements via chemical reduction. Since the International Atomic Energy Agency began investigating Iranian nuclear activities in 2002, the IAEA has discovered a series of clandestine nuclear activities, some of which violated Iran’s safeguards agreement with the agency.^[3] The Green Salt Project is allegedly among these projects.

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(2008/4)

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37. The Agency showed Iran certain documentation which the Agency had been given by other Member States, purportedly originating from Iran, including a flowsheet of bench scale conversion of UO2 to UF4. The documents show a capacity of the process of about 1 tonne per year of UF4. The flowsheet has KM markings on it and refers to “Project 5/13.” The documentation includes

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communications between the project staff and another private company on the acquisition of process instrumentation. These communications also make reference to the leadership of the project concerning the missile re-entry vehicle. The Agency also presented a sketch of a process to produce 50 tonnes of UF4 per year.

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WEAPON DESIGN