GRIOOS ¢ Could I ask a layman's question - Is there any experinen evidence that indicates whether radioactivity is incorporated when the 8,0 is in the water phase bs. the ice phase, KELLOGs Bo information on that at all, forry3 Does anyone have ideas on that? EISENDUDS There is a case where hailetones fell in Washicgton, The were hailstones about 2? 1/2 inches in diacter, and were radioactive, the hailstone, The activity was not concentrated on the cester of It was so diffused throughout the mass of ia heilstones that we could not get a radic-autograph - despi fact that we had a thousand or two thousand dpa throughou mass of the stone to radio-autograph, KRLLOGs Boulda't this inply, then, that the radicactive material probably initially in a liquid form, since that is the hailstones are formed ~ by liquid gathering on a core, LULEJIAN X aw not sure on one point on Dr, Fexler’s question - go to sand again, In the sand, we have more or less concl 100 microns, more or less. We have a lot of evidence zo at Los Alamos ~ frou Dr. Schulte's unit. They were with and they had jet impactora, and they found the zajority of perticles - in numbers - were in the 1 micron range, and came down in two hours from 0,000 feet. This must be entrainment in the fashion you are talking about, and it this