aso) VAN CAMP SEA FOOD COMPANY tore 8430 Van Camp Street, t Port ot Long Beach, Califor February 19, 1963 Dr. L. R. Donaldson, Director Laboratory of Radiation Biology University of Washington Seattle 5, Washington Dear Dr. Donaldson: Mr. Vignolo's letter of today to you expresses our interest in the report you forwarded us on the results of your radioactivity analyses of tuna meat and tuna Livers obtained in our plant in American Samoa. We are, of course, very pleased that the analyses completed in your laboratory did not show more than a very small fraction of the levels used as a guide by the National Committee on Radiation Protection. I was surprised at the lower content of K49 in the liver than you found in the meat, and I am wondering whether this ratio also would apply, more or less, to the other radioactive elements tested for. The very low radioactivity found in the liver and the meat of the tuna would presumably exclude the possibility of a selective accumulation of significant amounts of Strontium-90 in the bone substances or radioactive iodine in the thyroid. We are grateful to you for sending us this data which will, no doubt, allay any apprehensions that some of us may have had with respect to the possibility of radioactive contamination resulting from recent nuclear explosions in that area. Sincerely yours, her lovee SL/df Chicken of the Sea Brand Tuna

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