Lewis, E. B. + EEUKEMIA AND IONIZING RADIATION. Science 125, 965-972 (1957). "40. Libby, Willard F. ‘DEGREE OF HAZARD TO HUMANITY FROM RADIOACTIVE FALLOUT FROM NUCLEAR WEAPONSTESTS. (A letter from Dr. Libby to Dr. Schweitzer). Bulletin of the Atomic Scientists 12, 206-7 (1957). 41. Libby, Willard F. RADIOACTIVE FALLOUT. Remarks prepared by Dr. Willard F. Libby, Commissioner, U. S. Atomic Energy Com- - mission for delivery before the spring meeting of the American Physical Society, Washing- ton, D. C., April 26, 1957. 42. Libby, Willard F. WHAT THE ATOM CAN DO TO YOU AND FOR YOU. JU, S. News and World Report 84-70 and 73-77 (May 17, 1957). 43. Machta, L. and List, R. J. 214 (1957). STRONTIUM-90 MAIN HAZARD.. ‘Science News Letter 71, 44, Machta, L. and List, R. J. 474-77 (1956). WORLD-WIDE TRAVEL OF ATOMIC DEBRIS. Science 124, The dispersal of radioactive airborne particles from two nucleartests in the Pacific Proving Grounds of the AEC was traced by counting the activity on sheets of gummedfilm exposed at stations located throughout the world. A series of maps illustrate the fallout dispersal pattern at various times following the test shots. The effects of prevailing meteorological conditions on fallout dispersal and deposition are discussed. 45. METEOROLOGICAL ASPECTS OF ATOMIC RADIATION. Science 124, 105-12 (1956). Bomb energy, detonation altitude, and atmospheric conditions have significant influences on the mechanism, rate, and pattern of fallout. These variables are discussed. Also considered is the possibility of an intolerable Kr® concentration in the atmosphere from nu- clear power plants. 46. Moloney, William C. LEUKEMIA IN SURVIVORS OF ATOMIC BOMBING. Journal of Medicine 253, 88-90 (1955). “ 4 47. Muller, Hermann J. AFTER EFFECTS OF NUCLEAR RADIATION. American Society of Safety Engineers 74, 42-8 (1956). . New England National Safety News, 48. Nagasawa, Kakuma, Kawashiro, Iwao, Kawamura, Shoichi, Takenaka, Yusuki, and Nishizaki, Sasao. RADIOCHEMICAL STUDIES ON RADIOCONTAMINATED RICE CROPPED IN NUGATA PREFECTUREIN 1954. Bulletin of the National Hygienic Laboratory, Tokyo No. 73, 187-90 (1955). Radioactivity of various parts of rice seeds cropped in 1954 was determined and com- pared with that of 1953. Radioactivity due to K*® was established as total count of the ash and was subtracted for correction. None of the rice seeds in 1953 showed excess radio- activity. With the seeds in 1954 the following results were obtained: unhulled rice 3-6 cpm/g; chaff 3-6 cpm/2 g; unpolished rice 0-0.3 cpm/8 g; polished rice 0; rice bran 0. This radioactivity is thought to come from the rain, adherentto the chaff, but not from soil contamination. 49. Nagasawa, Kakuma, Kawashiro, Iwao, Kashima, Tetsu, Kawamura, Shiochi, Nishizaki, Sasao, and Matsushima, Takashi. STUDIES ON RADIOCONTAMINATION OF FOODSTUFFS EFFECTED BY A- OR H-BOMB EXPLOSION I. RADIOCONTAMINATION ON GREEN TEA. (1956). Bulletin of the National Hygiente Laboratory, Tokyo 31, No. 6, 201-3 More radiation than those for natural K* was found in 4 of 16 samples of green tea and another 3 samples sent from Professor Shiokawa who had found artificial radiation in them. The authors suggested the contamination of these samples was limited only to the surface, on which the radiocontaminated rain had aried up and not to the absorption of tea plants. 50. Nagasawa, Kakuma, Kawashiro, Iwao, Enomoto, Masayoshi, Matsushima, Takashi, and Kawamura, Shoichi. STUDIES OF RADIOCONTAMINATION OF FOODSTUFFS EFFECTED BY A~ OR H-BOMB EXPLOSION. OI. RADIATION OF MILK AND ITS PREPARATIONS. ' 162, , diesels