qa J3-H-29 GIBBINS: 16 January 1957 You think the firing frequency at Bikini is the seme with the natives pack inf? I think so. FELT: SANDERS: Do you have e figure for that? I don't, know what it is exactly, but it is probebly something like five. FELT: SANDERS: let me ask this question, Walt. If you can prove, or back up, a five day firing interval at Taongi, can you prove the thing to be economical, GIBBINS: Yes. Develoyment and everything -- do you think we can? GIBBINS: Yes. TIec@use if you fire large shots ac Enivetok and don't fire any large shots et Bikini because of the restriction which was mentioned her in assumption tio. Under assumption threc, Bikini is completely imective because of Commission restrictions. FELT: The way these things are greced, the advantage of Taongi increeses as you go fron or2tc three in here. GIBBIKS: Yes, trat's right. FELT: Under condition three. I think the advantage is quite obvious. Urder condition three, what that amounte to is simply shutting down Bikini entirely and then its clear that firing the whole ceries at Eniwetok is alrost impossible. Under condition tyvo where you use Bikin’. for small shots, here again the advar:tage of using Teonzi is pretty ezsy to demonstrate. “ Suppose you teke eight megaton range shots or something like thet. you can split them in part between Enivetok and Tocngi., eo there is a distin. tive acventage there. If you were still using Bikini for some large shots, then the advantege is really quite preferable on the basis of time versus the cost of development. Then it was on the basis of this kia¢ of argument that I sugsected that the approach be divided into these categorics, so we could just see what each one of them looked like incividuelly | Ee, bak it ’ to pee what the costa are elong eice the adventases., LosDE: samy Be : ~ le « In savings of time and

Select target paragraph3