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Machine-read from the scan, so expect some errors. Lines that couldn’t be read are left out.
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The best estimeteawhich cm be mpde at presentwith respct to the use of the SniwetokProvingGround fol!owingOperetionIvy are given below in reply to your requestof April 25, 1952, referenceT-6. These estimatescpnnotbe consideredfirm at this time and BIF!subject to very consieercblechengedependingupon the resultsof Ivy As statedin my letterto General Fields of April 16, 1952, ol'which you have a copy, the best estimateof the dete for testingphase of the operation~rouldrequirerbout.three months duringthe lest four months of calendaryear 1953. Presentplansenvisagea total of 3 + ? tower or ground not be evacuatedfor this shot unless we learn in Ivy that the effectsfrom large-yield'detonationsP,XV The other shots being consideredare sufficiently small that evacuationof the Atoll may be unnecessary,yet too l.ergeto shoot on towers tests will be ancillary and nffl requireextensiveinstrumentationof the and complexityof that for the GreenhouseGeorge
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indicatesa test operationat Eniwetokin the fall of 1953,of sometype an? magnitudeof assistancenil1 be requestedof the Department of Defenseas for Ivy with the exceptions,(1) ?rop,4&!&3 will I trust the above esttite of the situationwill assist you Very truly yours,