Radiological Analysis of Biological Samples Collected } At Eniwetok May 16, 1948.” by Lauren R. Donaldson, Allyn [[. Seymour and John R. Donaldson Applied Fisheries Laboratory University of \Washineton, Seattle Introduction On May 16, 1948, the day following the Runit Island test, a collection of marine organisms was made from the reef area about one and one-fourth miles north of the test site. This collection was used as a point of reference for the contamination studies planned for later in the season. Arrangements for the expedition to make the collection were handled by Captain James S, Russell, U.S.N., Test Director, and Colonel James P. Cooney, M.C. The collection was made by Dr. Lauren R. Donaldson assisted by Dr. David B. Langmir, Dr. Paul Aebersold, Mr. James Pickard, Commander Christian Engleman, U.S.N. with Captain Mallory as radiation monitor. Collecting Area The collecting area was chosen some distance (one and one-fourth miles) from the target area so as to be outside of the area of greatest fall-out but still within the general fall-out pattern. Samples of aquatic life were obtained from the waters on both sides of the exposed reef. # At low tide the material collected was in water 2 to 4 feet deape This report is based on work performed under Contract Nosil2&094-eng=33 with the Atomic Energy Commission. . acy ES ne Ss awe! ~ sy - nee ~ cnn: ae