provide essential data to weapon designers. This task entailed a large commitment of Air Force equipment and personnel in an important and inherently high-radiation-exposure activity (Reference 29). There was, finally, the contribution of all the services to the weapon design experiments of the joint task force as a whole through providing the support services ne~ cessary to conduct these experiments. EFFECTS EXPERIMENTS DOD effects experiments were conducted by the Armed Forces Special Weapons Project (AFSWP), a Joint Defense agency. AFSWP solicited service requirements for weapon effects information, assisted DOD laboratories in the design of experiments, and coordinated planning and execution with the AEC during the planning of the weapon design experiments (Reference 7). During test preparations, special construction requirements for the effects experiments were coordinated with the AEC base-support contractor (TG 7.5). The following guidelines were established as preselection cri- teria for proposed experiments (Reference 40, p. 15): 1. Each project must be justified on the basis of a mil- 2. Each project must be such that its objectives could not be attained except by a full-scale test, and not at NTS; furthermore, its objectives must be attainable at the PPG without unreasonable support requirements 3. Each project had to conform to the shot schedule (yields, locations, burst heights) established for the developmental program of the AEC. itary requirement The DOD effects program was organized as TU 13 and subdivided into programs for the execution of experiments with functionally similar objectives. Blast and Shock (Program 1) The blast and shock program was designed to investigate blast wave propagation through the air, ground, and water. 168 A description of the