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Program Directors, and Project Leaders. It is a requirement that responsible members of the scientific projects and task units be desigmted as radiological safety monitors and that they attend a 3-dw tra.in~g course at the Nevada provfi43 Ground or at Los Alamos Scientific Laboratory during the month of November (See CTG 7.1 ltr. to Froject Officers and Task Unit Conmnders, Subj: Radiological Stiety Monitors, J-18507 dtd. 22 June 1953). 2. All atoll, land, and kgoon areas in the vicinity of the detonations will be considered contatiated after each ~ot until cleared for operations by the Task Force Commander. Entry to and from contaminated areas will be via F&dSafe check points on Eid_mnan(or Enyu as an alternate), CVE, and Parv (Elmer). a 3. Rad-Safe monitors assigned to individuals or groups working in contamtiated areas or with contaminated equipment during recovery operatiox will act in an advisory capacity to keep the recovery party leader informed of radiation intensities at all times. The recovery leader h expected to accept this advice and act accordingly. It is the responsibility of the leader and members of the recovery party to adhere to the radiation limits for persomel. Task Unit 7 will furnish film badges and protective equipment> i.e*~ booties~ coveralls, respirators gloves~ etc. 4. The maximum permissible exposure (MPE) for per= nnel involved in this operation is 3.9 roerhgemt g-a oUfS mess reduced because of previous or anticipated future exposure. All expcsure to external gamma radiationwfll be regarded as total body irradiation. 5* ~ C is a chart of Radiological Contours indicattig the radiological situation of IVY MIKE shot, ground surface. A smiler percentage of contamination can be expected from the water surface shots than from the ground surface shots. A rule of thumb for estimating contamination levels from the chart isrl/10 of the chart readings for one day after the shot, and l/100 of the reading for the ?th day after the shot. 6. There will be no requirement for personnel to take Rad-Safe physical examinations, but medical examinations will be covered by separate 7* The arrival and proposed use of radioactive sources in the fom-ard area should be reported to the task group Radiological Sdety Officer.