we woe | nevtuaseagin'satcshdakaie: ; at tet toe naea APaieneet ich seca a In an address before the Washington Academyof Sciences, Washington, D.[C., November _ 15, Merril Eisenbud, Director of the Atomic Energy Commission Health and $ ety Laboratory, New York,stated that his estimates of the deposition of strontium 90 in soils .ment with those of Commissioner Libby. On the basis of current concentration in milk in the New York area, Eigenbud estimated that 8 micromicrocuries of } are in good agree- of strontium 90 trontium 90 per gram ofcalcium becomes the upper limit of the foreseeable strontium burdenfm the skeletons of the population of that area, and that 25 micromicrocuries of strontium 90 gramof calcium is the highest foreseeable skeletal burden anywhere in the United Statls from weapon tests already conducted. Eisenbud qualified the estimate with the statement, “ likely to be reduced as new information about the uptake of strontium 90 elimi uncertainties whichhave prompted the use of highly conservative assumptions _ UNCLASSIFIED section.) q "Radiological Marine Biology Survey (erent A survey to determine the amount of radioactivity in the waters around B i and (DE 361). The 3,300-mile cruise covered a grid of 53 ‘sampling stations about§45 miles apart, lying between 10° 15’ and 14° North Latitude and ‘between 159" and 166° East ngitude, within _ Radioactive materials were found in the ‘plankton samples from 1 every ‘¢ plankton counts, 1,100,000 disintegrations per minute per gram (d/m/g) wet ion. The nighot Weight; were ob- ; the restricted zone established for Operation REDWING.. -tained near BikiniAtoll, and the lowest, 1,300 d/m/g,in the northwestern / area, The average valueof 71,000 d/m /e for plankton was about 7,000 times value for surface water. Water samples were collected at the: surface and at depths of 25, 50, 75, of the survey e average 4 100 meters. The average radioactivity of water was 10,000 disintegrations per minute peq liter (d/m/1) at problems of contamination, vibration, and static electricity can be overcomef successfully demonstrated the usefulness of the various methods in evaluatine and distribution of radioactivity in the sea. The survey the amount The above values for plankton and water are of the same order of magnitude as similar samples from Rongelap lagoon during Operation CASTLE. The only fish colfected on this survey were three flying fish in which the radioactivity|of the liver sample was[about 0.1 that of: the plankton, and the muscle 0.05 that of the liver.. The second and final open survey operated from on board the USS Marsh (DE 699) between Kwajalein, Eniwetok, and Guam. The 4,000-mile cruise was expected to be dompleted about October 1,(1956. CRESCENT ETCE END Aeriat Monitoring —Operation REDWING (UNCLASSIFIED) The use of fast moving aircraft to delineate fallout patterns was succedsfully accomplished during Operation REDWING in supportof Task Force fallout studies. P-2Vfhircraft equipped ' with the aerial monitoring equipment designed by the Health and Safety ratory of the New York Operations Office mapped tens of thousands of square miles of open ofean after each of the large detonations. Equipment employed during REDWINGis presently Weing considered by . the Federal Civil Defense Administration to meet state requests that aerial radiation detection instruments be supplied on a matching fund basis as part of the national] cifil defense program. ce webrite,Sab:ReneeEE LIP bk or © becaieh DA dabet§ dead dinth BIOLOGY AND MEDICINE |