"35 PLOWSHARE (GENERAL)'' FOLDER: ' A 15 April 1958 letter from Teller to Fidler, Manager of SAN is informative Qe ey ; as to the weapons and Plowshare plans of Livermore as of this date. Following the fall 1958 operation, Livermore proposes 4 to 6 underground tests in the yield range 10 to 40 KT during an operation called Trumpet at the NTS which might begin as early as 15 February 1959. | NC They also propose a test series similar in scope to what was planned for the fall of 1958 for the fall of 1959 at the NTS. Concurrently with this weapons testing and "as a first step in the Plowshare Program, we are planning an earth-moving project in Alaska, for - the summer of 1959.. in addition, plans are underway for two industrial application for the spring and fall of 1959. The primary object of these latter tests is to access the capability of nuclear devices for cettain mining, power production, and isotope production applications. '' He then goes into detail of the support required on the USC&GS for these various nuclear explosion activities and suggests ‘that the AEC requests a proposal fromthat organization, ot “>~