personnel. The major technical radsafe element of the task force was TU 7 of the Scientific Test Group (TG 132.1). designated as the commander of this unit. The Chief Radsafe Officer was Radiological safety of all military and civilian personnel was specified as a command responsibility (Annex H, Op Order 1-52, IPL 132#4), and radsafe activities were to be performed through normal command channels. Task Unit 7 had <3 er responsibilities that affected the entire task force, while the other three task groups possessed essentially self-contained radsafe units. Each task group commander was responsible for providing the necessary radsafe personnel for his group. In February 1952, while the task groups were being organized, CJTF 132 published Operation Order 1-52 (IPL 132#4), which specified the radsafe responsibilities: e@ The Commander, Joint Task Force 132 was to: 1. Specify the measures necessary to ensure the radiological safety of task force personnel and furnish technical advisory assistance to task group radsafe officers 2. Inform the Commander-in-Chief, Pacific (CINCPAC), of potential radiological hazards to those living within a radius of 600 miles (966 km) or personnel flying within a radius of 1,000 miles (1,610 km) of the test site. @ Prior to the onsite operational phase, task group commanders were to: 2-3