ll 197 and we have spent quite a bit of time ohecking off these celculations to see why that is so, Actually the Castle fission yield was 6,6 megaouries and Tearot fission yield 04 megacuries of strontium 90, awfully big factor. That is an You have a factor of 300, but one thing we must remember ia that all of this 4s extrapolated data to this date, Therefore these have not been used as much, In other vords, this activity will not fall out or fell off aa much to lst of Janvuery ‘56. DR. Ge DUNNING: Esch month you get this much? So that if you want to total the data you would compile this up? DR. HARLEY: Yes, We have done that and I will show you the curve later. Just on a comparable basis I have the data here for the United States and I think this is striking if you remenber the preceding one if you remember the contribue tion in the U.S. of Teapot 4s very consider- able on a ratio basia,-

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