Description: Uranium concentrate (yellowcake) composites from four mills (Anaconda, Kerr-McGee, Highland, and Uravan) were analyzed for U-238, U-235, U-234, Th-230, Ra-226, and Pb-210. The ratio of specific activities of U-238 to U-234 in the composites suggested that secular radioactive equilibrium exists in the ore. The average activity ratios in the yellowcake were determined to be 2.7 x 10/sup -3/ (Th-230/U-238), 5 x 10/sup -4/ (Ra-226/U-238) and 2 x 10/sup -4/ (Pb-210/U-238). Based on earlier EPA measurements of the release rates from the stacks, the amount of yellowcake released was determined to be 0.1% of the amount processed.
Date: December 1, 1979
Creator: Momeni, M.H.; Kisieleski, W.E.; Rayno, D.R. & Sabau, C.S.
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Partner: UNT Libraries Government Documents Department