~6contingencies which are listed would begin after the safety tests but the site preparation in some cases has been started but in most cases requires further authorization. Specific readiness preparations would cost some 3,6 million dollars in FY 59 and 5.5 additional million in FY 60 with an additional 9 million or so needed to prepare sites for actual tests once the go ahead for testing is received. 4 of the weapons test listed are called "heavily diagnosed" shots and would require about 9 months lead time to prepare the diagnostic experiments. By this letter, Johnson requests authorization be given to increase the tunnel preparations to meet the overall readiness program which would begin new construction just about immediately which would carry over well into 1960. A 22 June TWX reply from Starbird to LRL (No. 1041) states "Authorization for the proposed construction is withheld pending an overall review of the effort at NTIS now underway. authorized construction will continue until the end of June." Presently Starbird anticipates an effort of lesser scope than indicated in the Livermore letter. A 15 July 59 letter from Teller to Starbird responds to requests for information and proposals in development of tactical weapons with enhanced nuclear radiation and what the Livermore program is and might be. The type of weapon is defined as that which would have a large radius for radiation kill compared to that of blast effects | Teller sets forth the present lab effort in these areas and what would be required in the way of shift of personnel from other programs or additional hiring to meet various schedules for testing and preparation of these devices. Of interest, he states, "First of all it should be reiterated, that the most impcrtant factor to insure early stockpiling of some radiation weapons would be the prompt resumption of nuclear testing. .. . For the purpose of this discussion we will assume that testing