Photodosimetry technicians attended a l-week course, and laboratory tchnicians attended a 2-week course at Evans Signal Laboratory early in ber 1953 @cto- (Reference 17). TASK GROUP 7.2. A radiological safety indoctrination program was stituted for all TG 7.2 personnel. 1m The program included instruction i the following subject areas: Explosion phenomena, including blast, heat, nuclear radiation, and fallout Details of an airburst Comparison of air, surface, and subsurface bursts Danger of radiation to personnel Accumulated dose and tolerance exposure levels Decontamination procedures. The unit radsafe officers attended the atomic defense course at the Fleet Training Center at Pearl Harbor or were trained locally. A memorandum entitled "Radiological Safety Monitors Procedures" was published by CTG 7.2 on 23 February 1954. It served as a monitor's han book and was distributed to each radsafe officer, radsafe noncommission qa officer, monitor, and backup monitor of TG 7.2. It became the practice to hold several briefings before each shot tc apprise personnel of their responsibilities and action to be taken in t event of radioactive fallout. On the day preceding each shot, staff offf- cers, detachment commanders, and radsafe officers were briefed on genera radsafe rules, dosimetry, and instrumentation for the officer couriers o radiological samples. A special bulletin from CTG 7.2 issued to each mef- ber of TG 7.2 on the day preceding each shot included individual safety and security precautions. TASK GROUP 7.3. In August 1953, 4 months before the Navy Radiologic Safety Plan was distributed, Hq TG 7.3 promulgated instructions describi 92 ee Basic physics; theory of nuclear explosions