Acknowledgments The field portion of the radiological survey of the Marshall Islands was accomplished by a very intense and thorough effort by people representing different organizations. The number of samples collected and the amount of information obtained during the survey was a direct result of the cooperation and diligent effort of the following individuals: N. A. Greenhouse . Brookhaven National Laboratory A. V. Kuehner Brookhaven National Laboratory G. S,. Levine Brookhaven National Laboratory R, P. Miltenberger Brookhaven National Laboratory J. R. Naidu Brookhaven National Laboratory V. A. Nelson University of Washington, LRE We are also deeply indebted to the following BNL personnel who complemented the field work by performing radionuclide analyses on numerous samples that were collected and by pretesting all equipment prior to use in the field: J. Balsamo F. Cua J. Gilmartin G. Hughes L. Phillips F, Stepnoski The survey crew extends its thanks for the Nevada Operations Office and Pacific Area Support Office for support services which resulted in a smooth and efficient survey. Support from the Kwajalein Missile Range and the site contractor, Global Associates, as well as from the crew of the R. V. Liktanur is greatly appreciated. The outstanding cooperation of personnel from the Trust Territory of the Pacific Islands and from the Office of the District Administrator of the Marshall Islands, as well as that of the Bikini people, played on important part in the successful completion of the survey.