CABINET PAPER—PRIVILEGED Property of the White House—For Authorized Persons Only (5) There can be no single permissible or acceptable level of exposure without regard to the reason for permitting the exposure. It should be general practice to reduce exposure to radiation, and positive effort should be. carried out to fulfill the sense of these recommendations. It is basic that exposure to radiation should result from a real determination of its necessity. (6) There can be different Radiation Protection Guides with different numerical values, depending upon the circumstances. The Guides herein recommended are appropriate for normal peacetime operations. (7) These Guides are not intended to apply to radiation exposure resulting from natural background or the purposeful expdaure of patients by practitioners of the healing arts. (8) It is recognized that our present scientific knowledge dogs not p provide a firm foundation within a factor of two or three ffor selection of any particular numerical value in preference to another value. It should be recognized that the Radiatiox Protection Guides recommended in this paper are well below the level where biological damage has been observed in humans. It is recommended that: — ——— 4, Current protection guides used by the agencies be continued pn an interim basis for organ doses to the population, Recommendations are not made concerning the Radiation Prétection Guides for individual organ doses to the population, other than the gpnads. Unfortunately, the complexities of establishing puides applicable to radiation exposure of all body organs preclude the Council from making recommendations concerning them at this time. However, current protection guides used by the agencies appear appropriate on an intRrim basis. CABINET PAPER For Consideration