200 DASA 2019-2 AYRES: You mean phosphorus was not the limiting factor? DUNHAM: Iron. EISENSUD: Wefound, in studies of our own staff in the laboratory, that some of our ladies who eat tuna fish a few times a week have blood levels of ircn-55 thatare about ten times higher than the rest of the staff, This led us to look at the Pacific tuna, which I think was done inde;-tadertly by the Hanford people, and they came to the same conclusion, that it was iron-55 from the fallout. DONALDSON: Did you see cobalt? RISENBUD: Cokalt-60? We haven't seen it. If it were there we would have seen it. In fact, it isn't there. TAYLOR: Is there any persistent biological sign of the testing still at Bikini or Eniwetok in the aquatic part of the environment, either in the plants or in the fish? I mean, if you went out there now and didn't use radiation measuring instruments, but simply looked. at the plants and the fish and the birds, would you expect to be able to tell that there had been this very intensive exposure of the area to radiation? . AYRES: Without radiochemical means? TAYLOR: Without radiochemical meana; just by examining the plants and animals? ‘ DONALDSON: May I postpone my answer until we have a look at a film we produced during the 1964 survey of the islande? TAYLOR: Yes. DONALDSON: I think it will be more obvious when we look at the film, with the co-chairmen's and our host's permission, which I would like to shew later on. TAYLOR: The answeris... I guess the answer is yes. DONALDSON: The answer is that you do not see it FREMONT-SMITH: The answer is no.