Me tele: ryt ~~ “- BIOLOGY AND MEDICINE a ~ “fallout from tests at NTS. Results of analyses completed by the end of the quarter are given below. These values are substantially lower than values for these areas derived from theo"retical calculations. The difference between the actual and expected strontlum 90 content may result from such factors as weathering and low rainfall in these areas and from the fact that strontium 90 tends to form a smaller percentage of nearby fallout than predicted from tables of theoretical composition of mixed fission products. . ” Strontium 90. Location " (millicuries per square mile) Templute, Nevada Cedar City, Utah. Lund, Nevada Beaver, Utah . . Eureka, Nevada , St. George, Utah. . Alamo, Nevada Bishop, California Caliente, Nevada —_ ; . 42.3 36.2 30.7 29.6 ' 25.6 24.10 15.3 14.9 14.6 Overton, Nevada 9.7 Mesquite, Nevada Barstow, California 5.2 : 1.98 For comparison, values for some other locations in the United States are given below. It will be noted that the values forsoils collected around NTSare not significantly different from the values for these other locations. Location Memphis, Tennessee Rapid City, South Dakota New Orleans, Louisiana Detroit, Michigan Rochester, New York. Seattle, Washington Strontium 90 _ — ‘Los Angeles, California (millicuries per square mile) : oo , 38.0 / 31.7 _. 30.4 29.9 27.9 27.5 8.3 (Values obtained from other locations were all within the range shown above.) ‘ PREPARATION FOR LARGE-SCALE RADIOEPIDEMIOLOGIC STUDIES DOE ARCHIVES About 30 scientists engaged in human radiobiologic studies attended a meeting at AEC headquarters in September to advise on planning for large-scale studies of the effects of lowJevel environmental radiation on human populations. Effort was made to design investigative procedures for measuring general fitness and the effects that environmental radiation may have on fitness. Particular attention was given to leukemia induced by radiation and to the effects of radiation at different altitudes. The first part of the meeting was devoted to review of the status of studies dealing with “ready-made” human radiobiologic situations, such 28 those at Hiroshima and the Marshall Islands and those presented by accident cases, radium UNCLASSIFIED Department of Boe 49