tm pmetaenee ne : whe requests for planning and coordinated response from the Laboratodrics in the tay of test resumption. Inthe begimning of the discussion of the technical ‘rogram, Foster states "Past experiences have taught us that a technically neaninsful series of experiments at the rate and magnitude of the present soviet Program requires something like a year of preparatory effort. 1ot now ready to compete with the Soviets. Weare We could within a few months make some high-yield proof-tests of designs weaponized during the moratorium, While such tests will provide a number of large explosions, sontribute little to our progress. they would probably One of the major benefits to be derived from she resumption of nuclear testing is the possibility of developing advanced strategic warheads.'' Also he notes the area of warheads for tactical application as one that should not be addressed extensively. He divides up the response of this letter into several sections as follows: which dea's with the presently scheduled series of a 1. dozenor so specific devices whichare planned for test in Nevada between now and August of 1962; another section which shows additional experiments which could be fielded as early as early 1962 if the program were accelerated and which Livermore feels are concepts which should be developed soon; a third section of broader kinds of device developments which Livermore is addressing with theoretical work and physics experiments and along ©" the testing may be headed; a fourth section section which lists the proof tests in which Livermore is most interested; and XW-58. 55. They are less interested in proof-tests XKW-56X1, XW-38, of the 41, 47, 48, and It is noted that some of these proof tests could also be used as systems tests or in effects tests of such things as high altitude phemmenolopy. A few bricf remarks follow on the major problems with getting the testing program unde rvay and at a high rate of speed and, along these lines, Fuster states: In Fb 66 & were Oe / Here is a 30 Septemb& letter from Foster to Betts in reply to the several