ww Md LO This also yields a figure for initial uptake of fission products as a whole, which permits the calculations of uptake to the bone of several isopopes of Sr, Y, Ba and La. These elements probably contribute the major cortion of activity within the bone. The relation between initial uptake and concentration of fission produsts per unit area (estimated from the dose rates seasured in air) then may be used to extrapolate to Shot 2 case ag was done in reference (1). For the animals exposed to both Shot 2 ami Shot 9 fall~out, this procedure will yield total doses and concentrations. B/ Assumptions 1. Highest measured activity on July 8 was 4e6 x 107 po/sm of 12 in thyroid. 2. Tine of both fall-outs was 2 hours after detenations. gamma dose rates3 Initial ' 20 ar/hr for Shot 9 at 305 hrs 500 mr/hr for Shot 24t 2 hr. 3. The animals ate 2000 om of vegetation per day. Retentions of the elenents arc as given by Hamilton (4) and are stated in what follows: 4e Activities of -molides with time, in disintegrations per minute per 10,000 fiesions, are as given by Hunter ani Ballou (3) and are stated in the following discussions. as ace ° X = 0.0855 (hs Be) a ahd = 0.046) 12) Gey, a, Sad 0-506 (728) (050k 25 on 15 Junse 3TOR ARGHIVER