Ly LARSEN: (continued) experiment we did, 1.8% of the Strontium is retained from a dose of 1,531,000 d per s fed daily over 17 weeks, Plant dry material grown on contaiminated 9011 which would give an average daily feeding of about 2700 d per a, that ie plant dry material, Cesium is the least important, cerium is negligible, ruthenium may be important because this is = bed actor when we talk about the cheatstry of it may act as & cation or an anion. We have studied the fused aaterial fron trinity on this sort of a thing, experiment, end we have taken fused materisl from Shapper 7 and fused uaterial from Upshot 6 and in each case all we oan do is to put down nil uptake. At least the instrumentation thet we are working with and the techniques that we have used on our research work, as we cali it, using those same studies or cosparisens cons up with this value. Now you may be interested in what kind of activity is immediately available to a plant on detonation. Om this last series cut ehere we, along with our fallout studies, we trapped animala, the native rodents and shot the jeckrabbits that are in the fleld. We had good fortune in that there was Upshot 2 went in the north easterly direction and was not recontaninated during the period of our stay in the field. we did serial sampling on it. So In addition we had saspled that area in October '52 and Novenber...I mean September ‘51, You may be interested in some of the things we found on that... On the rabbits d day plus 8, d plus 22, and d plus 32 days. The casium, lung, liver, leg muscle, and fenur. hihi BOE ARCHIVES