Wee fe LIB: Ts (continued) going to have te take perhaps a factor ef 1,000, we need 1,000 square centineters of area, so 1f we take a 1,000. square centixeters then we get an order of one disinte- gration per minute. This can be seasured. fe conclude that in theory, at least, if there's nothing wrong with vhig reasoning that the Alamagordo boab, if the fission products were distributed uniforaly over the earth's surface, is detectable now anyplace on the earth's surfa by taking the fallout on an area 80. Of course, we've” had a creat many boabs since then, one notices for exacp though, that the radioactivity hasn't gone a 20 year lif tines ceans its all around, or essentially all of it is still here from all the boabs that have ever been shot. This is an interesting point for the reason that, refer~ ring to our earlier discussion, we have the correlation yo. between the strontinga assay and the particular boabe utilised would be very poor probably. With the nusberof boabs that have been shot we perhaps can rezove that " probles. It looks, in theory, to be quite practical, now the procedure would be something like this, take your process of your sample of soil or of seawater or of vegetable matter, human material, aninal aatter, calcine it or extract the alkaline earth froa it. The appro~ priate chemical procedures, trusting that the strontius will follow this, have been to let it stand for a tine Denart~~ : Hizt- Hed)?