Marshallese: I have a question. If I understand correctly the Department of Energy is the department that is responsible for understanding about radiological effects and energy in general, and you have in this graph on page 12 showed information regarding the duration of radioactivity of certain elements and some, it is pictured here, as being very short-lived and some are longer and you gave an example of one which is say 30 years as a half life so, my question is: Since you are the ones now that are active in studying this and understanding it, why did you make your survey so many years, like it was done in 78 and you realize though that something such as the top two elements, they are not present, they do not exist after, in -. that period of time and so it seems like you who understand this, delayed certainly your survey for, it is obvious that you made it after some elements were no longer even present in the soils? If this information is accurate, which we assume it is, then it seems interesting to me that the survey was made years after some of those have dissipated. Ray: That's a most appropriate question. In fact measurements and surveys have been made since the first test at Bikini in 1946. In the locations where most of the radioactive material fell, these surveys have been made most frequently and continuously, for example, at Enewetak, at Bikini and later at Rongelap and Utrik. This survey and this report were an attempt to summarize at one time the conditions throughout, whether or not we expected to find anything significant to health. As I indicated this morning we did not have, until recent years, the ability to do as extensive a measurement as we have done in this survey. (Buck to Ray: You mean by ability, equipment?) (Ray to Buck: That's right equipment and technology if you can..well yeh, equipment, measuring instruments. ) Marshallese: It seems like yesterday a statement was made that would tel] us that a person who lives on a given island that is contaminated, if he lived there and did not eat food from that island, that it would be 38 Ge _soan# Q 7)