“yom & mss Brig. Gen, D. E. Hooks ~Ze | April 2s, 1958 Since we are asking Dr. Lester Hachta of the U. S. Weather Bureau to be responsible for compilation and analysis of the Sampling data resulting from thie world-wide tracer experiment, it weuld be appreciated if you could send him a copyof analytical results as they are obtained oe your routine surveillance flights at the same time thet you tranamit US. Eincerely yours, C.l, Dunham, M.D, Director Division of Blology & Medicine cc: Dr. Lough, HASI. Dr. Machta, U. S. Weather Bureau Distribution: Copy 1A - Addressee Copy 2A - Dr. Lough, HASL Copy 3A - Dr. Machta Copy 4A, 5A, 64 - DBM File kn. Copy 7A, 8A - ESB Files OFFICE » SURNAME > BMES olland:dl DATE Form AEC=-318 (Rev. 9-53) PRIMTLNG OFFICE 16—62761-3

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