~ oy u wi85 100 F .O , 90 BO F A - Belle soil - top inch August 20, 50 August 20, 1958 Hoel4ilppl4i 10 FF Activity 1958 B - Belle soil - 8-10" depth Cel44 ppl 44 2145 | 4 Zr?Np? Ru 103py,103 Rh 40 RyLO6pp106 498 ~515 30 76 ‘ 20 LO i Fig. 7. [ | Gamma spectrum curves of Belle top soil and of soil taken at a depth of 8 - 10 inches. The W185 peaks were arbitrarily equated to illustrate the greater relative amount of wl85 at depth in relation to the other isotopes.