UNCLASSIFIED at the Eniwetok Proving Ground. With known meteorological data such a technique will successfully quantify the area of faliout and indicate qualitatively the relative intensity cf radiation. Precise determination of the fallout area requires consideration of many complexmeteorological parameters. However,from the above analysis a practical field teol cas be developed that in most cases will satisfactorily define the area of interest. REFERENCES 1. Approved by; E.R, Lphine E.R. TOMPKINS Zz. 3. Head, Chemical Technology Division For the Scientific Director Dallavalie, I.M. New Yo.k, N.Y., Srunt, D. Physical snd Dynamical Meteorology, Cambridge University Press, London, T94T. A Siudy of the Atmosphere Between 30,000 and 160,060 Feet Tereliminary reports, mel of Naval Operatieas, AerologyService Section, Washington D.C., September 1948, 4. Smithsonian Physical Tables, 1954. 5. Schuert, E.A. <A Fa:lout Plotting Device, U.S. Nawal Radiological Defense Labcratory Technical Report USNRDL-~127, February 1957. ~14-. palestadietes Micromeritics, Pittman Publishing Corporation, - ~15- rte Rene ae eeer

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