We were impressed by the broad range of Laboratory cbjectives, and by their realistic formulation in relation to military utilization, which are indicative of the great strength and maturity of this Laboratory, Although many formidable technical problems in the forward-looking program remain to be solved, particularly in the small weapon field, _ the prognosis for continued success scems favorable, | _(e)--« ivermorg, We were impressed by the detailed diagnosis of the ary ree ae shot at CASTLE as presented by Dr. Teller. This diagnosis : an excellent job in itself but also showed the presence of able people at the Laboratory, which augurs well for the success of their program for the Class "D" two-stage weapon. A program for in_vestigation of small weapons utilizing the RURESEetEcs technique was presented by Dr. York, This technique may provide ‘err’alternative to the gun or hollow implosion assembly methods and is therefore interesting to explore, Ce. There was expressed in the Committee a certain concern “with the program as a whole, particularly in the light of the altered two-stage weapon situation. Although no specific suggestion on the program is offered, it was felt that some thought should be given to a firm assign ment of responsibility and authority to a full-time director of the Livermore Laboratory which may result in a more crisp program and a more effective sharing of weapon. responsibility with LASL. . (4) Test programs~-TEAPOT, “WIGWAM, Post-TEAPOT, and REDWING, We do not wish to comment on specific items of the test program at the present tine since the plans may still be subject to drastic change. However, it is very gratifying that even after the numerous advances of the last years there are so many items which are worthy of the effort and expense involved in weapon tests. This may be an appropriate time again to emphasize the importance and value -of the test programs, (e) Weapons Development Philosophy, DOE ARCHIVES The proposal by Dr. Bradbury of a philosophy to guide weapons development over the next years, we believe, deserves particular attention, In the period of scarcity of materials and limited numbers of weapons, interchangeability of nuclear parts was an important criterion of stockpile weapons cesign. The present is a period of transition -- from scarcity to relative abundance, froma modest range of yields to one almost without limit from very small to very large. Interchangeability should no lcnger dominste degign if <% restricts numbers of weapons, their readiness and flexibility of use in time of emergency, or their effectiveness in accomplishing the specific missions assigned. We would, therefore, urge a careful reappraisal of the relations between the types of design of Huclear weapons end the missions for which they are appropriate, with the objective of estab- lishing guidance principles for optimizing the design of the several classes of weapons, small and large, which could accomplish these rissions. In such a reappraisal, both LASL and Sandia should take part with the -Militery Departments in the necessary comprehensive system studies.