Dunning said that dose from Hardtack 193 mr to date at Rongelap. Urine collected 24 days after Bravo, analysed 2 years later- sr99 12 d/m/1, Cs!37 174 d/m/1 Urine samples Feb. '56 Sr90 2.4 d/m/t Cs 137 33 '58 (Pre Redwing) 1957 (at Majuro) 1958 0.34 - 1.43, Avg 0.48 d/m/l " 137 - 370 d/m/1 25x'57 level 100x " level Csl37 body burden - 0.5 - i.Sye Avg. 0.8 uc Estimate about 1 yr. to reach equilibrium with environment. '57 zn85 body burden of Rongelapese determined by whole body counting 0.03 0.07 ne. '57 zn85 body burden of Utirik people - 0.48, 0.23 ne. '58 (May) Zn®5 body burden Rongelapese, whole body counting, 1-3 uc Some people have distinct Lal40 peak some have none. Dunning outlined general requirements for data for evaluation of hazard and documentation, and preferred units: 1. External % A. 3 feet mr/hr B. Film badges at 3 feet and lower for 6 months to 1 year) mr If. Food Chain A. Food supply (pooled samples, representative meals). 1. Amount and kinds (variability with income, availability). 2. Isotopes a. Sr90 ye/gm "wet" b. Ca mg/gm " c. Sr90/Ca uuc Sr/gm Ca d. Csl37 uc/gm wet e. Cs137/K , unc Cs!37/gmK Ifl.Human and Animal (mammals) data A. Body Burdens - Sr90 (S.U.), Cs1!37 uc, l. Urinalysis 2. Whole Body Counter 3. Bone zn85 uc.