(7x ee oo Would they have them in Korea? Colonel Hooks, would you know about this? HOOKS I don't know for certain. I assume not. LIBET: How about Europe? HOOKS : Yom. LIBS: I have a notion ve may get some definite proof of the existance of bigh lying radioactivity just by witching operational air eraft in this simple manner. New, of course, putting on a filter or anything like this is bound to be seme trouble, but if it is as aieple as neesuring radicactivity on the inside chamels of a duct in a jet, I think maybe we might get something. Now of course it would be rough, but at least it may be worth getting. I just wonder whether it ian't worth trying. ian't extively orasy. It There is a thermal gradient in the syatem, and this thing is a possibility of separating cut partioulate matter. The yield, of course, would be enormously low, tut there ie probably a ict of stuff in the large volume of air that goes through these airplanes that compensates. Another line of attack is to develop « sampling progrem for the high altitudes, and I think this would have to be done on a longer range basis. I think it is quite important to sample the higher layers before the CASTLE sexles, if we possibly osn. If anyone has any idea of « simple way of using operational airplanes to get evidence of radicactivity in the stratosphere— well, above 30,000 ft., it would be quite valuable. Fl ay BOE ARCHIVES