—s-E-S-REE APPENDIX "BE" DRAFT LETTER TO THE PRESIDENT 1. On August 2, 1957, I wrote you concerning Operation HARDTACK, the nuclear test series planned for the spring of 1958 at the Eniwetok Proving Ground. I pointed out that the then estimated number of nuclear shots for the series was 25, that it was planned to initiate the series as early as possible and that this date appeared to be April 1, 1958. My letter also requested that you note that the AEC and DOD were proceeding with preparations for the series, On August 9 you discussed the matter of HARDTACK with me and approved starting the series as early as possible, directing that the number of nuclear shots be held to the minimum necessary for attaining the essential defense objectives, 2. Pursuant to your approval we have gone forward with preparations for the series. It is apparent now that, if the necessary scientific objectives are to be realized in the short- est test period and at least cost, the first shot should be fired on or about April 15, The remaining shots would follow as quickly thereafter as devices could be emplaced and desired weather conditions occur, 3. The AEC and the DOD have reviewed individually and collectively our planned firings with the objectives of reducing the number of the minimum consistent with fulfilling essential defense objectives, 5eeearco - ae pan see eepaeenearn dition, the DOD must conduct five weapons effects tests, 7 | 23 4 Appendix "E" a