ito Liniry ~wiREs Are any rockets being fired at White Sands? VOICE: They don't stay up very long. IT don't think thet could compare with sampling from the jets. KELLOGG: One thing we've been thinking about a little 1a the possibility of sampling, or getting « direct measurement of radioactivity in the stratosphere by « method which would involve sending balleons. The advantage cf balloons is that thay eat get up, at present, higher than any cperational eireraft that we have. I suspect that IAB since the height of the tropopamwe in the Marshall Islands is arowxd 55,000 ft., we wuld just about have te have balloons in order to sample the stratosphere at those levels. In fact, if we can consider the transport anything dike horisontal, then vs wuld expect to see the debris come along at heights from 55,000 ft up and dewn when it reached the uiddle latitudes. In trying to imagine what balloon sampling would look like, we have been inquiring abowt some methed of doing it similarly — on a basis similey to our present radioscnde networks. In the history of upper atasephere research — I can't remember back, but I can read about the great cost of the early radicaondes -~ it wes HE considered quite « trick te do it. Mow we have upwards of 30 stations in the U.3. making two soundings a day on a routine basie for a very nominal cost. We inquired about the cost of sending w «& piece of conductivity equipment which could actually be inserted into one of the channels of the ordinary radiosonde, Pd DUE ARCHIVES