erations and given the responsibility for specific centralized and highly technical radsafe services. Thus, considerable manning prob. lems had to be solved to agsemble the necessary "primary duty" tech. nicians, most of whem were military personnel on a temporary duty basis. Even for this unit, however, the "additional duty" philoso. phy was utilized where possible for personnel economy. PART III This portion of the radsafe appendix will deal briefly with the unique aspects of the CASTLE radsafe situation and the problems, both planning and operational, which were encountered. ally, Part III is divided into four subject headings: Organization. (A) the prob. lem of radiation doses and protection of Task Force personnel, (B) off-site operational considerations, (C) the effect of the shot schedule and conditions, and (D) the aspect of lagoon contamination. A. The Problem of Radiation Doses and Protection of Task Force Personnel. The development of the CASTLE RadSafe Plan primarily revolved around two basic criteria, the so-called rule dose and the tactical dose. The rule dose is the MPE of 3.9r for the Operation set by the AEC and based on the industrial safeguard of 0.3r per week for thirteen weeks. This limit creates radiation control prob- lems in work performed in contaminated areas and becomes progressively more significant when there is an increase in the yield, number of events, and the rapidity of detonation. The tactical dose is that higher exposure accepted by DOD authorities in the ra- 190