RADIOACTIVITY ALONG THE 80TH MERIDIAN 6. L. B. Lockhart, Jr., R. A. Baus, P. King, and I. H. Blifford, Jr., Atmospheric Radioactivity Studies atthe U. S. Naval Research Laboratory, Report NRL-5249, December 1958. See also J. Chem. Ed., 36(6): 291-295 (1959). L. B. Lockhart, Jr., R. A. Baus, R. L. Patterson, Jr., and A. W. Saunders, Jr., Contamination of the Air by Radioactivity from the 1958 Nuclear Tests in the Pacific, Science,130: 161-162 (1959). . L. B. Lockhart, Jr., R. L. Patterson, Jr., and W. L. Anderson, Measurements of the Air Concentration of Gross Fission-product Radioactivity During the IGY, July 1957-—December 1958, Report NRL-5359, U.S. Naval Research Laboratory. September 1959. See . also Tellus, 12(3): 298-307 (1960). L. B, Lockhart, Jr., and P. King, Speculations on Atmospheric Processes via Fission Product Levels, Am. Scientist, 47(3): 386396 (1959). 10. L. B. Lockhart, Jr., Current Information on the Radioactivity of the Air, in Fallout from Nuclear Weapons Tests, Hearings Before the Special Subcommittee on Radiation of the Joint Committee on Atomic Energy, Congress of the United States, 86th Congress. 1st Session, Vol. 1, pp. 483-591, U. S. Government Printing Office, Washington, D. C., 1959. 11. L. B. Lockhart, Jr., R. A. Baus, R. L. Patterson, Jr., and A. W. Saunders, Jr., Radiochemical Analyses of Air-filter Samples Collected During 1958, Report NRL-5390, U.S. Naval Research Labo- ratory, October 1959. See also J. Geophys. Res., 65(6): 1711-1722 (1960). 12. L. B. Lockhart, Jr., and R. L. Patterson, Jr., Critical Analysis of Measurements of the Gross Fission Product Activity in the Air at Ground Level, Report NRL-5440, U. S. Naval Research Laboratory, February 1960. 13. L. B. Lockhart, Jr., R. L. Patterson, Jr., A. W. Saunders, Jr., and R, W. Black, Contribution of Hardtack Debris to Contamination of the Air During 1959, Science, 1323420): 154 (1960). 14, R, L. Patterson, Jr., and L. B. Lockhart, Jr., Long-Range Detection of the French Nuclear Tests of 1960, Science, 132(3425): 474 (1960). 15. L. B, Lockhart, Jr., R. L. Patterson, Jr., A. W. Saunders, Jr., and R. W. Black, Fission-product Radioactivityin the Air Along the 80th Meridian (West) During 1959, Report NRL-5528, U.S. Naval Re- search Laboratory, August 1960. See also J. Geophys. Res., 65(12): 3987-3997 (1960). 16. L. B. Lockhart, Jr., R. L. Patterson, Jr., A. W. Saunders, Jr., and R. W. Black, Fission-product Radioactivity in the Air Along the 80th Meridian (West) During 1960, Report NRL-5692, U.S. Naval Research Laboratory, October 1961. 17. L. B. Lockhart, Jr., R. L. Patterson, Jr., A. W. Saunders, Jr., and R. W. Black, Atmospheric Radioactivity Patterns Along the 80th Meridian (West), 1959-1961, in Radioactive Fallout from Nuclear Weapons Tests, A. W. Klement, Jr. (Ed.), USAEC Report TID-7632, Book 1, pp. 188-203, February 1962. 18. L. B. Lockhart, Jr., Atmospheric Radioactivity, in Proceedings of the Sixth Navy Science Symposium on Weapons and Weapons Ef- fects, San Francisco, Calif., May 2-3, 1962, Report ONR-12 Vol. 1, pp. 1-27, Naval Radiological Defense Laboratory, 1962. 19, L. B. Lockhart, Jr., and R. L. Patterson, Jr., Intercalibration of Some Systems Employed in Monitoring Fission Products in the Atmosphere, Report NRL-5850, November 1962. See also Radiological Health Data, 3(12): 466-470 (1962). 495

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