the latest feelings of LRL with regard to the use of Christmas Island for the forthcoming test series. We continue to feel that Christmas Island can represent the most desirable test location for the atmospheric series if it can be made available for exclusive use by the U.S. from January 1 through July l... In addition, diagnostics which we could expect to obtain will be superior to those of any other available location. Afric) For example, AWhich require alpha diagnostics, could be adequately diagnosed with the balloons an at Christmas Island. Tests at these yields can of course be done underground more expensively at a much slower rate...... A further general advantage of Christmas Island would be the opportunity to fire a large number of devices fixed at altitudes by balloons. component malfunction." This procedure minimizing the probability of He goes into further detail on the Sioux Vulnerability Experiment which requires that a number of samples be placed on the surface in the vicinity of a nuclear explosion and, whereas, NTS would be the most suitable location, if not possible there, then Christmas Island would be the next best choice since it cannot be done on shipboard. Also, conducting this test underground raises questions about the feasibility of sample recovery and information transmission. Thus, in summary for Christmas, '"'If use of the Island would impose limitations on U.S. authority in direction of the test program, types of devices or number of shots, then the Lab would recommend selection of another site. In the event the Island is not available for a series this spring, we would still urge that arrangements be made to provide assurance on the use of this facility for future nuclear programs.'' He notes that he has had discussions with Starbird on a possible shipgoing operation which would also utilize Jarvis Island and that, by and large, the major Livermore objectives can be achieved

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