irradiation of the gonads, or "sex" cells, there was nearly complete agreement among all the scientists that there was no threshold, and that any amount of radiation over normal background levels could induce genetic damage, and thus cause mutations. Although the reason for the dehate centered primarily over the effects of testing, it is included here because it is necessary for the reader to understand certain conclusions and recommendations which will follow in this report. The committee would like to state that it is biased in favor of the linear theory, for the reasons which Dr, Pollard and others mentioned. It draws strength in this stand from the statement of Dr. Lauriston S, Taylor, Chief of the Atomic and Radiation Physics Division of the National Bureau of Standards who testified before the U.S. Congressional Subcommittee: - « e« I frequently feel compelled to say that this question of radiation safety and premissible dosage standards is not a subject for which there is a clean and simple answer, The whole question of setting radiation exposure limits depends on physics and biology. It depends enormously on ethics and morality, and on an enormous amount good [sic] judgment and good wisdom on the part of the people who are responsible for setting them, It is by no means a clean-cut quantitative physical problem," The Committee thus has made a judgmental decision based on scientific opinion and evidence and morality. It is in basic agreement with Dr. Karl 2. Morgan of the Oak Ridge National Laboratory, who in an article "Standard Man -~Standard Patient" in “Medical Radionuclides: Radiation Nose and Fffects," a symposium sponsored by the AEC and the U.S. Public Health Service, said: "T believe the prudent assumption in administering a radionuclide to the patient is that all ionizing radiation to the patient is harmful, and therefore the physician should carefully weigh the need for a radioisotope diagnostic procedure or radiation treatment and evaluate the expected usefulness of the diagnosis or therapy against the possible (94, p. 100) (emphasis added) radiation damage..." 41 1OV¥bUS