H2. Radioactive Spun-Aluminum Discs. Radioactive parts of obsolete uranium enrichment equipment lie in a contaminated scrap-metal yard at Oak Ridge. These 6 and 9 foot wide discs are categorized as “materials in inventory” rather than as “radioactive waste” because this metal may be recycled to make containers for other forms of radioactive waste. K-770 Contaminated Scrap Metal Yard, K-25 Site, Oak Ridge, Tennessee. 10 January 1994.
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