408746 REPOSITORY COLLECTION BOX No. FOLDER NARA coL.ege Min. K FE Gab. Office F Jerrehey AL Corres 1951-7 S WUFZ-Felo - GF- O10 18S May 26, 1953 %_ Unser - MOTWOLE VA. MEMORANDUM FOR HR. LEWIS L. STRAUSS If there should be a three months delay, this in turn may cause a three months delay in the CASTLE series, particularly if the desired energy release is not secured. Date Owe Class. By bubs Doe BO. pOr-lWA priority effort. UNCL. the shot, could be fired could conceivably be contracted if a high priority is assigned by all the organizations that must collaborate in the Eniwetok operation. I doubt seriously if this could be brought to two months, however, by even a high Class:: Our group in charge of firing control and special high speed inatrumentation, Edgerton, Germerhausen & Grier, now busily engaged at Nevada, will have to have adequate time in which to set up their paraphernalia. The period of three months before - One of the reasons for this is that F-Bl-Ce are used in cloud sampling which gives us our basia for radio chemical analysis. These must be shipped to Eniwetok since they cannot be flown. Reviewers running possibly to three months if it isa shot in Eniwetok. SPECIAL RERE VIEW FINAL DETERMINATION The shot is of great importance since the energy release of the device must be known precisely for the CASTLE series. It is estimated that there will be a delay lala While in everyone of our shots there is some element of risk, the Commission has evaluated the risk in this shot and is confident that the device can be detonated safely. The Commission plans to apply even more stringent standards than ordinarily applied to minimize the possibility of fall out and shock damage. FPODO (din ey Reference is made to our telephone call this morning as to the risk we run in the proposed eleventh shot. fhe Commission believes this shot, in spite of tower shots that we have shot heretofore. Furthermore, being the last of a series we can be even more careful than usual with BEST COPY AVAILAGLE Civ.as MFC uvo]e. Cs -96-S ite high energy release, has amaller risks than many of the