2. Essentially all- of cleanup can be accomplished by personnel categorized as occasionally exposed individuals; accordingly, the majority of the workforce will be treated as such insofar as radiation limits are concerned. If, on the other hand, radiation areas (Sce IV G.4) should be established, they will be assigned to personnel having the most experience with radiation, and qualifying as radiation workers. E. MEDICAL EXAMINATIONS. 1. Preplacement and termination medical examinations will be given to all cleanup personnel. The examinations will include a review of prior occupational exposure and a description of any unusual exposure —¥Yesulting from previous occupations, accidents, procedures, incidents, or therapeutic for the purpose of evaluating an individual's acceptability into the cleanup operation. Also, the examinations will include a lung count for any individual who may have worked with plutonium at sone previous time. 2. Plutonium represents the greatest radiation hazard facing Cleanup workers. Although plutonium at Enewetak is harmless while it remains outside the body, enters the body. it could cause deletcrious effects if it Precautions will be taken to prevent the inhalation or ingestion of plutonium, but a bioassay program will be prescribed to monitor the effectiveness of the precautions. 3. The principal bioassay method will be urine analysis. Urine samples will be taken on a periodic basis from all workers who at Ty er eemgare rs te syrpmmee es seme peareniN ay te Free seme ty eft ‘ i ¢ ww ' é ‘ At pews, ~ Logon t fp ee ye :- no 4 yt MA . ‘ . . woe eN eon Tn