SUBJECT: Conduct of Future Overseas Nuclear Tests but with exceptions including Operations IVY, WIGWAM and ARGUS. With respect to the Eniwetok Proving Ground, this "every other year" concept has some disadvantages. There have been proposals which it is believed have considerable validity that our testing concept should permit a test to be conducted whenever the need is indicated by the development program. Acceptance of such proposals would require that the Eniwetok Proving Ground be operated on a continuous basis. While recognizing the advantages inherent in a continuous testing concept, it appears that when a number of tests are involved, the factors of proving ground location, climatology, and effective use of personnel prove to be most difficult of accommodation. Even though tests were limited in number and scheduled throughout the year, it appears that these factors, and that of weather in particular, would tend to force these individual efforts, time-wise, into a group or series. Testing under a continuous concept would probably most logically be accomplished by an organization and command structure similar to that now in use at Patrick Air Force Base, yet other considerations are such that the safety, coordination, support, and control problems associated with a test series would require that ell participating activities be under one head. The Task Force arrangement for conducting atomic tests is so constituted as to take advantage of the seasonal Eniwetok weather, to provide coordination of the many activities involved, to provide over-all support required, and to exercise some judgment and influence to keep over~all costs and commitment of forces to reasonable levels consistent with the magnitude of the test series. Based on these and other considerations, I have concluded that the Task Force concept, while not an ideal solu- tion, is generally sound and should, for the present at least, be contimued unless and until there are firm indications that the United States will observe a test moratorium for some indefinite extended period of time. 4. The remainder of this memorandum is devoted to changes in the Task Force concept and organization which it is believed will permit the conduct of nuclear tests in the Eniwetok Proving Ground with greater economy, efficiency, and harmony. 5. With each succeeding overseas test operation, the scale of the operation has increased and the number of agencies and personnel involved have also increased. The programs and projects for Operation HARDTACK were so numerous and varied, became a part of the test program through so many channels and authorities, were funded and manned from such a variety of sources as to be almost impossible of proper technical and administrative management in the proving ground. HARDTACK was further complicated by the sense of urgency resulting from the evident 2

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