3 ee: antes a meget one A opyene tape teee e Ofbtn this, Lf wa uahke tho choatenl coterninations as to what portiens are radio strontimm, but of this total activity, we have 25 Dell in four milos; S7 at Co and G4 at 142, « - a indicates ae - that the vedlo ate te . 9 cA 4 ~~. FY . as, “4 a 4 This ezada mr, stautiwa dueronses at distances, ante ey ote Sgn - as miles out is as far as wo would work, nyo™~ ft is Dt Ay « -“ rc 1:20 A 2 part of our pro- Gxeam, and wo intend to So out os far as 699 milcs, if MNeCCscary, following thas last sorias, to sse just how far out this reletionshiv will hold. Cortainiy 1% dindicsntes in terzs of tho avellability of the komb residuc that wa cannet jucce this in terms of meter readings 21012 oF gust enviroenncntal contomins- tion, We aro dealint with seno fracticn cf the total fall-out that is not distributed in this manner but is distributed rathor uniformly over a rather lavse area. This sumsests the smaller particic sises which will tend to bo carried Zurthor and tond Preliminary data scon bi to diffuse a little further, = an ae to SUSTSst that this relationship holds, It is not cnough to go out in an aveoa aud say this is how much activity is there. It has to be interpreted as to what it- moans or why it is there, Somstinos way it is thore is scemotimes easier than what it moans. At UCLA, wa have more or less brezen our work down into the phenomenolcesy of what are the factors of different fall-out distributions Waich are the thinss Dr, Lerson has just Ciscussed, and then what is the biclozical significance of it. Ve have to have the two bits of data in order to got a prover