IN REPLY REFER U. S. NAVAL RADIOLOGICAL DEFENSE LABORATORY fo rue. 3-700 SAN FRANCISCO 24, CALIFORNIA CAS:ms 1 Aug 1956 ACH4 Dr. C. L. Dunham Director Division of Biology and Medicine U.S. Atomic Energy Commission Washington 25, D.C. Dear Dr. Dunham: I am sorry to have held the Rongelap galley this long, but I have been very pressed in the last month or so. At any rate, I am returning it herewith; Dr. S. H. Cohn at NRDL has also had a chance at it, and both he and I are satisfied as to its shape and content. I have one qualification: later data resulted in a siightly different spectral distribution estimate (Fig. 1.2) and I thought you had the later figure already. (it appears in WT-939). If it is not too late, I'd like to replace the one you have with the enclosed, which I hope is suitable for reproduction. (No great harm is done if it is too late, for the changes do not affect the main argument). Thanks very much for sending the galley on to me. Sincerely, C Ch, a hhhave— C. A. SOMDHAUS Donner Laboratory Bio, and Medical Physics Berkeley 4, California Encl: print (1) PP ibeaby oh oo thio mine pramnahiastorreby 1-9) Pel inne (hog Can be, have bet, Cected. Liv App reine SRE Comes of Pace kerr OF aF. (More “9 og | Nifo 5002023 a7sece om) preicZ odbc) 3 a

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