Office Memorandum * UNITED STATES GOVERNMENT TO * G. M. Dunning, Chief, Radiation Effects of Weapons Branch, Division of Biology & Medicine FROM : 1, E. Wallen, Aquatic Biologist, Environmental SUBJECT: ADDITIONAL RONGELAP DATA SYMBOL: BMES: IEW a.f. W tle, DATE: May 1, 1959 . Sciences Branch, Division of Biology & Medicine Following a telephone conversation with Dr. Held of the University of Washington on April 15 we sent you some data concerning strontium-90 levels at Rongelap Atoll. We have now received 3 tables of data on radioactivity in Pandanus which fit as pages 82a, 82b and 82c in your data book. Copies are enclosed for your retention. Enclosure: As stated above gov