235," 1 op grass and soil, running about 10 to the third micrograms. 2 Thatis at a fairly early interval. Alderson Reporting Company Washington, D. C 8 MR. HARRIS: You might think of plutonium as one 4 that you could follow. 5 would worry me a little bit would be the fact that in 6 order for a long range application of this to Gebriel, it 7] means a fairly long timstudy in which, due to leachine 8 in transportation, s me of the samples are going to go down 9 in activity relatively fast. One thing I have thought of that Plutonium, however,is one thing 10] that you can follow fa a long period of time, much longer il than you can some of these others, because of its decay 121 rate, and its longer half life. 18 Another thing that you might think of is this: 14] Do you have numbers on the coral as concentration of uranium, 145 and this sort of thing? 16 MR. HARLEY: M7 Doya have those numbers? We have a couple of thom analyzed but we managed to sneak away a few museum pieces, 18 MR, HARRIS: There are numbers available on 7 that area far blanks on alpha emitters in the coral, and 20 these can be gotten if you need then. at ARC ‘ Here is another thing. In some cases, you night 2 be looking at an alpha, which might turn out to be uranium "8 or thorium, if it was put on an alphaspectrum analyzer. “4 low levels where you get high grass location rates or q At high leaching rates, you might run down very soon to the point ‘ Renartmant of Ercrgy —- cee aoa pra an) Reet Lote cme ge ™ piel aida de . ‘ .