410342 Files December 30, 1954 W. 8. Boss RADIOACTIVITY (3ETA) IN FISH TISSUES AT ROWCELAP ATOLL, MARCH 1953 Ors. Seymour and Heald furnished the following data by telephone. The oumbers or values are ziven in micro curies/kilogram of wet tissue. A. ‘thole Fish Radioactivity eta) average range is from .J1 in the Zongelap Island area (southern part of Atoll) to .l near Kebelle Island (northern end of atoll). B. YTlesh of Fish (muscle) (1) <abelle area (north) average .025 (2) tongelap Island Reef area average .0062 (3) Atoll Lagoon average .015 C. cc: They beve yet to find measurable levels of strontium 90 in the fish. Dr. Dwnhen Dr. Yolfe _*- donning BEST COPY AVAILABLE

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