of APPENDIX "A" BACKGROUND AND DISCUSSION BACKGROUND 1. The trend in thinking of the International Commission on Radiation Protection, the National Committee on Radiation Protection, and the National Academy of Science is toward more restrictive criteria for standards of radiation protection. The National Academy of Seience Report recommends, "---That for the present it be accepted as a uniform national standard that x-ray installations (medical and nonmedical), power installations, disposal of radioactive wastes, of weapons, experimental installations, testing and all other humanly controllable sources of radiations be so restricted that members of our general population shall not receive from such sources an average of more than 10 roentgens, in addition to background, of ionizing radiation as a total accumu- lated dose to the reproductive cells from conception to age 30.--~-" The NAS Report also states, "~--That individual persons not recelve more than a total accumulated dose to the reproductive cells of 50 roentgens up to age 30 years---", DISCUSSION 2, The dividing line between "individual persons” and "seneral population" is not distinct in the NAS Report. The numbers of people involved around the Nevada Test Site might not constitute a "general population” yet it probably would be difficult to categorize many thousands of people as "individual persons," Further, there is in a sense "inbreeding" within this population. ~3- NET ETN TP TSseni onSaba Appendix "A" ENING? SD

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