-2- UCRL- 3644 A SUMMARY AND EVALUATION OF THE PROBLEM WITH REFERENCE TO HUMANS OF RADIOACTIVE FALLOUT FROM NUCLEAR DETONATIONS Contents Abstract. 3 Introduction, 4 Effects of Radiation Exposure in Humans. 5 The Proportional-Effect Concept of Irradiation . 5 Advantages Minus Cost Equals Net Gain 7 The Concept of Maximum Permissible Dose . 7 The Genetic Evaluation of Radiation Effect 8 Evolutionary Benefits? . ti Life-Shortening Effects. 12 Summary of the Fallout Problem on a Global Basis. 18 Estimation from Human Bone Assays of Future Human Bone Concentrations of Strontium-90 . . . . . . . . Cesium-137 Fallout. . . . . . ee The Level of Radiation Exposure from Fallout Radioiodine Fallout . . Summary. . . . . . 2. 7 7 ee Bibliography . . . . . 0. . . . . . eee . . . . . . .2l aT . . . 28 ee BT ee 8B eee BB

Select target paragraph3