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How much depleted uranium hexafluoride is stored in the United States?

U.S. DOE's inventory of depleted UF6 consists of approximately 700,000 metric tons of depleted UF6, containing about 470,000 metric tons of uranium, currently stored at the Paducah Site in Kentucky, the Portsmouth Site in Ohio, and the East Tennessee Technology Park (ETTP) in Tennessee (formerly known as the K-25 Site). This inventory of depleted UF6 is stored in about 57,000 steel cylinders. The inventory is listed in the table below.

DOE Inventory of Depleted UF6
Location Total Cylinders Total Depleted UF6
(metric tons)
Paducah, Kentucky 36,191 436,400
Portsmouth, Ohio 16,109 195,800
Oak Ridge, Tennessee 4,822 54,300
Total 57,122 686,500

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