~-2- Dr. A. H. Seymour As you recall, the only restriction that we placed upon the return of the Rongelapese was that they should not eat land crabs, since the last survey showed an unusually high amount of Strontium-90 in their soft tissues. Although we are sure the Rongelapese can live comfortably without eating land crabs, it nevertheless became a problem for other than strictly health reasons. Therefore, when the last survey was made (July 1957) we made a strong point of colleeting land crabs and reporting their values at the very earliest possible moment. By the middle of October we had not received such data and again requested it. We still had not received the data by the early part of February 1958 when Dr. Conard reopened this question, since he was returning for his annual visit with the Ron~ gelapese. Upon further request the data were transmitted to us, based on only two land crabs collected on Rongelap (and incidentally the two mumbers of concentration in the muscle differing by a factor of 12). I fully appreciate the rather extreme hardships in making such collections, but be that as it may, it still leaves us with inadequate data to do our job. I would be happy to sit down with you or anyone else at any time to see if we can coordinate our efforts and responsibilities more fully. ce: Dr. Dunhan Dr. Shilling Dr. Western 9002174

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