gi Buuc¥aN 2 (Continned) purging itself even at very, very high levels and for this reason I thought that some of the data that, well in one of our other programs might be carefully analysed and so give us a lot of information as to how much thea atmosphere ia purging itself of this debris. LIBBY s So you imagine that 1+ might be at great heights? That the radioactivity might be at great heights? ROLZMANR : Well, I got the feeling from your remarks and others that this. thing might hover at stratospheric levels .... VOICSs Ten't your point coming to say that your guess would be that the radioactivity, assuzing a period two or three months after a shot, that. the radioactivity would be pretty well distributed? ACLZMANNs That ia right. It is pretty well distributed bat it is constantly being purged and that data even at lower levels can be analysed to give you a pretty good indication as to what is zeing on above. That is what I was getting at so that there night be sufficient data around with careful study that ceuld give us somes ansvers that we are seeking here. VOICEs If thia were true then it would seem that -iserntdud's data should show this, because let us assime that there is a six month half- life then he ought te have # six mcnth slope:on his fallout and he doaan't have that. enllllaennen™ DOE ARCHIVES yy yn 7 wt sseoneem