You take your 3.7 200 per cent and you say that 50 per cent of the stuff went up and the other 50 per cent was distributed locally, in the Marshalls and in the sea, you bring Lt up to 7,4 ver cent. We have vary good evidence that on the basis of meazsurenenta which will be described, that due to losses, in our film, the fact that it le not a perfectly efficient collector and due to the fact that there is fractionation of strontium that the fellout at a distance’ from the test site, 4g richer in strontium than you would predict, that you need another correction factor of nbout four and on that basis we believe that the Worldwide Monitoring Net- work up until now hns gotten perhaps as high ag 30 per cent of what we would expect from Castle. Of what we would expect to find. It's 15 per cent of what actually was in the yield but we don't expect to find half of it -- we figura about half would be here (indicating.) This enables us tO perhaps sive a 3 4 reasonable prediction of how things will look in the future due to continued fallout from high yield nuclear weapons, Oo “A i:

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