UNCIASSIPIED D. The effect of fallout on water supplies for human, agricultural, and industrial use 1. Possibilities for water treatment E, Possibilities for modifying present food collection and distribution and*handling systems to guard against hazard F, Behavior in oceans mixing above thermocline, waste disposal techniques and ultimate effects G. Entry into biological processes including man's food chain ” 1. Deposition and retention on surfaces of vegetation 2, Uptake by vegetation from soil a. Characteristics for various plants and various radioactive materials (1) Strontium (2) Cesium (3) Rare earths (4) Plutonium b. Dependence on soil characteristics c. Other factors: decay, biological half-~ life, effective half-life 3. Soil-plant discrimination factors 4, Uptake by marine life and algae 5. Uptake by animals, animal products, and man H, Retention and decay in animals and man 1. Distribution of fallout in body tissues, milk fluids, a. Tendencies for localization (1) Radioiodine b. Dependence of equilibrium values on effective half-life 2. Discrimination factors (preferential uptake of particular fallout products by particular species of plants, animals and man); types and how measured or inferred ~ 14 -

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