Ys % wh Those data should be very interesting. VOICE: One thing that seens to me would be very important is exactly how efficient is your method of collection. The amount of stuff vhich is up there varies. We just took 50% out of the nat end this is something that you must be able to control quite accurately. We would have to see what that efficiency is and then we would te able to at least get rid of one uncertainty. WEXLER: I think thet it is very important to distinguish between stuff thet is brought down by rain and stuff thet is not brought down by rain to be absolutely certain that you have those two categories. VOICE: And this in periods of quiet when you don't have «a lot of local, well-defined, radioactive clouds floating around during periods between tests. LIBBY: -X still hope that we can think of some way of using operational aircraft to get some idea of the stuff veing upstairs. GRIGGS: There is an airplane that will fly nearly to &,000 feet. WEXLER: Well, if you can dco that and have s sanaple--tut Ben Holesan’s experinent won't help because you don't know what height that stuff is picked up at. That's right. It ia so dilute that you have to take quite a large volume to get anything, and it is so old that you Reve to take quite a ict. HOLZMAH: I don't want to be used as an argument against Will's proposal but I do think that, say, a ballon sessurenent vould tell us something about how the thing is distributed with altitude and maybe some orderly program whereve might be able to get scue rates of scavenging or diminution of the activity might be worthwhile. My remarks vere aainly to be used a DOE ARCHIVES