uLe (Continued) data. Also the polar regions are rather inaccessable. even of the total of the earth's surface is not a so you have problens. WEILER: Bow about nature's integration ef watershed collection, in rivers. LIBOYs would there be any runoff of this uaterial, Well, Er. Bell has some information and I think Mr. Thef make a remark. B:LL: Mr. Bell. GCors is very prelicdnary, but it looks to us fros this blast that we tried to get some idea of a runoff coeffic we could use in these activities, and we came to the conclusioca that the stuff, as far as we could measure, was not only had to worry sbeut that which hit on the water. « We Thah was very prelininary. LIBBY Dees this sake sense to you, Mr. Theis? THEISs I want to point out that the eastern Fassachusetts area area in which there would be less rapid erceion than in © parts of the country ani so that the lack of erosion ef fallout material of the soil, which might carry the fal night be correlated, but that I don't know. LIBSYse You are saying that muddy rivere might have stuff in them it has gone along with the mud. I think so. /10