*« * fle. yD Seeger ttle pp aA Eneman Islands were in areas found to be the most’ radioactive by the U. &. Public Health Service personnel. on Nam I. the well point was driven in a low area near the center of the island. Existing wells were sampled at Enyu. Attempts to obtain ground- water at Rerokoj were unsuccessful. Soil samples were taken by one-inch depth increments to depths. of ‘ten inches or more near each well point. All depth increments for two sets of samples from Eneman were analyzed but only the surface one-inch of other sets of samples were analyzed. points, | In addition to samples from soil pits at the well surface samples also were taken at Aomen and Oroken. Sediments from the Bravo Crater were taken by dredge from « depths of 40, 120, 140, and 160 feet. ANALYTICAL METHODS of Energy Denartment fice Historian’s Oi S metry. Eo RCeHcItVr mma-ray Ap Gamma-Ray Spectrometry zed by ga All of the samples were analy Lhnzogs They were counted for at NaI(T1l) s least 100 minutes with a 3 x 3-inch crystal used in conjunc-cion with a 256-channel analyzer. Selected samples were counted for 1,000 minutes, either with a 3 x 3-inch detector or a detector system consisting of two opposing 5 x 5-inch crystals operating as a summing spectrometer. Most of the biological samples were oven dried, compressed in polyvinyl chloride ground and (PVC) pipe to a volume