As Commission representative, you are responsible for, and the designated custodian of, the atomic devices and their components which will be trans- ported overseas for this operation, Mr. Carrol] L. Tyler, Manager, Santa Fe Operations Office, U. S. Atomic Energy Commission, will be directed to make necessary transfers of material into your custody. To assist you in the technical accountability aspects, however, Mr. Tyler bas established a Source and Fissionable Material Accountability Station at the Pacific Proving Grounds which will be responsible te you for accountability and proper maintenance of aecountability records for all nuclear componente, beth enroute to and from, and in, the Pacific Proving Grounds. The Commission recognizes your responsibility as Task Force Commander to make decisions and take proper action in emergency altuations where the health and safety of Task Force personnel. or property are concerned, or where the National interest must be protected. You are authorized under such circumstances to make emergency disposal of fiseionable materiale, if required. If you do make such disposal, the Commission should be notified at the earliest practicable opportunity. You are requested to keep the Commission informed of any significant developments which arise in the course of the Operation. You may be assured of our full support in your undertaking and our sincere wishes for your success. Sincerely yours, UNITED STATES ATOMIC ENERGY COMMISSION T. Keith Gleafan Acting Chairman Major General P. We Clarkson, USA Commander, Joint Task Force 132 Washington 25, D. C. Enclosure Cy 4A of Memo. to Mr. Tyler from Mr. Boyer. 4 CTA VIROL yvigol & EU uth cagt y art é e a d i seobepad cov cet isso eyes ET eff geet 1S ouUa nee e A. s\ .