Dr, Harley had obtained in Norway indicated that practically all of the activity was about six months old, Further, that the radiostrontium content of the samples was estimated to be approximately 1/100th of maximum permissible level for drinking water (U, S, Bureau of Standards Handbook 52). In other words, that water from the melted snow did not contain a harmful amount of radioactivity and that the water supply in Oslo contained only 1/50th of that amount of radioactivity whith was present in the melted snow water, Since direct Strontium-90 analysis inherently requires time, due to the necessity for allowing the isotope to decay, it was not until the latter part of June that more definitive data could be obtained, It has now been found that the radiostrontium content of the most active snow sample is 1/300th of the maximum permissible level for industrial exposure and 1/30th of that recommended for the population as a whole. On June 20, 1956, Dr, Charles Dunham, Director of the Division of Blology and Medicine, Atomic Energy Commission, and Dr, John Harley arrived in Oslo to discuss the findings of the AEC report with the Norwegian Defense Establishment. It appeared that whereas the Norwegian Defense Establishment was not greatly exercised over the finding of the Strontium-90 in the snow, and in the Oslo drinking water, the Minister of Health, Dr. Evang, and his adviser, Dr, Ekkers, were inclined to make a great deal of the possible hazard, Dr, Ekkers is considered a reputable radiologist, and is the Director of the Radium Hospital, although there is some question of his political leanings, The latter was also said to be irked by the National Academy of Sciences and the British Medical Research Council reports which indicated that medical x-rays constituted the most important man-made source of radiation exposure to the population as a whole, - 25 ~ Enclosure IV