woh¢ (contiumed) of the precipitation echoes in the herisontal direction, and you could see whether that is a more cr less uniforn precipitetion. That recalls something in ay wind I heard about Brockhaven Laboratory also this spring. They made measurements of vedLoastivity in rain, and for the first part of this sterm there was nothing, and then at the end of the storm it wes a matter of high counte. And there thay figured that it was just a conjimetion, that the radicactive alow! came into the plece with rain to then bring it down. It was a rather sharp thing — rather sharp mountains there — which again indicates the very fine structure that would probably be grosaly nissed by curiprasent coarse network of radiosonde stations. X (000: Supposing you had a layer, Harry, of radicactive material like the kind of layer that we see when a amoke plume cones out on a stable day and spreads in a big flat layer. Supposing as the Thunderstorn Project found — and you can coment on this, Dick Coons -- as I recall seaing the results - I haven't docked at these systemtically, wat just looking at the various pictures that have been published, there seems to be s great variation in the height of the rain rises in «given ~ even in a& rather auall - area where we have many cimilus around. And one cumulus might reach up into this layer and another cumulus might not. WEXLER: That's why I say I think that if you could get out soma rough meastreaents @ to whether your radioactivity was within the DUE ARCHIVES