: 7 ~i,scorage, mixing and fa..cut anc in particutLar of an intecevting new one advancea seceinciy by E. *. Martel: _,. Dr. Macteli'‘s theocy iv that whereas equatorial chots would have ctneis zadioaccive debris dictcibutea uniformly cnsoughout the utratospheze é&..1 might wei: come down accordin, to a residence time of 5 co 21) years, vesjion, as for tunic is not true for snotc made in the poiar the russian tests. He su,z.,ests that there may pve a dictinction to be dvawn for these as compared to the U. S. - Bicitish tests carried >.ut near the equator. For the pola. snots he suggests a mucn shorter residence time - 1 year or tess - ana over the Northern Latituses of tue particular nemicphere involved. we Russian Octoter cevies makes ai immeurate and definitive cect possibie. Ii: Tatie II we dispiay the ctrontium-Sl fai.our sate for naortherr. Latituaes expected now - on Dr. Marteli's theory - wich an avevaje ase cuch that the ratio of the Ur ee o£ come 32 miiiicuvies of vtvroutium-9. pew cquave mile pex year day stvontium-c9 to sccontium-9) whould be .Z2) in November wecreasins to 45 in Jai.suary as compared to expected sates on the older uniform dictcibution theory of 2.5 or 5.i wiliicuries per square mize pe: year dependin, or whether tiie stratospheric cesiaence time be taxen aS :0 of 5 years respective:y and witn the stvoncium-09 to strontium-93 at 55 fo2 Uovember, 4i for December ana 32 for January 1959. In the table ave Jiven vome om Wovemver for Pittcouryh, ——7 December for iJestwoou, Mew Jersey, and Januacy fox Wasnir.,ton, B.C. pos ARCHIVES

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