January 1977; BNWL-2190/UC-20; "The Energy Research and Development Administration (ERDA) sponsored work at Battelle, Pacific Northwest Laboratories (PNL) to evaluate asphalt emulsions as a sealant to retain radium in uranium mill tailings and to provide a barrier on the tailings surface to prevent radon diffusion to the atmosphere. Suitable asphalt emulsion tailings mixtures were formulated and radioisotope diffusion were measured. Also, a preliminary assessment of asphalt emulsion stability to ozone, oxidation, ultra violet (UV) and gamma radiation was made to determine any potential long-term deterioration." Contents: Introduction; 1 - Characteristics of Uranium Mill Tailings; 2 - Formulation of Asphalt Emulsion; 3 - Stability of the Asphalt Amulsion Seal; 4 - Application of Asphalt Emulsion for Sealing Tailings; 5 - Laboratory Experimental Work; 6 - Conclusions; 7 - Discussion of Sealing Mechanism; 8 - Research Recommendations; Appendix A - Radium-Radon Transport Through Asphalt Emulsion (7 pp.); B - Typical Data Taken During Laboratory Experiments (5 pp.); 50 pp. including tables, figures, b&w photos, plus references, appendices, & distribution list; report originally had a stapled binding, but is now bound inside soft blue paper covers; ex-corporate library call numbers' sticker on front cover; glue browning inside front cover; tiny tear & wrinkles along edge of front cover; pages very clean; very good condition

Radon, Uranium, Tailings, Radium, Mill, Industry, Nuclear, Atomic, Energy, Resources, Asphalt, Emulsion, Formulation, Research, Recommendations, Sealants, Mining, Geology, Earth Science, Mine, Reclamation, Protection, Environment, Diffusion, Radioisotope, Gamma, Radiation, Stability, Laboratories

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