Vai Walter, do you happen to know of any? DR. CLAUS: to thera All of No, I don't know what you are referring the permissible levels with the exception of those that are tied in to radium, radium, plutoniun, strontium, are based organ af on a calculated dose to the critical .3 of a REP per week. So I think that is probably small enough in comparison with a couple of hundred r dosage you might give so they could be neglected. If you are dealing Alderson Reporting Company Washington, D. C. with radium plutonium, you may have a little different 10 problem on your hand, because those are based on actual 11 experience, rather than calculated levels. 12 think the doses do not exceed the .3 REP per week. 13 differ with that level very much. 14 DR. BUGHER: But even there I They Dr. Dunham, I will explain what the 15 question is here. 16 individual isotopes in bone 17 body exposure of 150 r which has been brought out this worning 18 is not quite saying What that is to, 19 affect the concept of permissible limit, essentially, in 20 regard to the expectations of biological accidents: and 21 unfavorable results in the bone from the concomitant gamma 22 ray exposure. In view of the rather small level of and so on, whether the whole and whether that would 23 I said as far as the experimental side is 24 concerned, since the permissible limits are themselves levels ARC at which one would expect such things ayway, that it is nae esr Adee poiveba