VI PREFACE AND ACKNOWLEDGMENTS Jones of USNRDL, who prepared the autoradiographsof the tissues. In addition, Dr. W.P. Norris of Argonne National Laboratory made autographs of specific tissues. Dr. Rachael Reed of USNRDL performed the microscopic pathological studies of the tissues from the animals in whom radioisotopes were deposited internally. Lt. Col. R. J. Veenstra, VC, U. S. Army, was in charge of the care of all the experimental animalscollected in the field and returned to the United States Naval Radiological Defense Laboratory. Dr. E. R. Thompkins madethe facilities of the chemical technology division of the USNRDLavailable and provided technical advice on the radiochemical aspects of the project. The continuous help and cooperation of the Trust Territory representatives in particular, Mr. Maynard Neass, District Administrator of Majuro Atoll and their aid in obtaining the necessary control data on Marshallese inhabitants was indispensable to the success of this study. Particular help was obtained from Mr. John Tobin, the district anthropologist, whose knowledge of the Marshallese language and habits, in addition to services as an interpreter, were invaluable. The initial measurements on skin and cloth- ing contamination were made by Lt. J. S. Thompson, MC, USN, of V. P. 29 Squadron. Weare indebted to him for furnishing his records on the contaminated individuals and the initial decontamination that was performed by his group. The care andthe study of these humanbeings would not have been successful unless the Marshallese had accepted the importance of their being under careful medical observation and of gathering medical data. At all times these people were most pleasant, cooperative and actively participated in the project. In particular the project officer wishes to express thanks to the Magistrates of the groups, to the Marshallese health aids, school teachers, and nurses. It is quite impossible to acknowledge the assistance of the numerousindividuals in vari- ous agencies who assisted in collection of data and editing of the various chapters. The Project Officer wishes to commendall of the professional and technical members of the group for their excellent motivation, initiative, and voluntary long hours of extra work that were essential for the accomplishmentof the clinical and research objectives and the rapid collection of the preliminary data in the field. It is quite evident that the entire study of the exposed individuals was a cooperative endeavor involving numerousactivities, and that it would have been impossible except for the splendid spirit of unselfish cooperation by all concerned. The fine team work of the group itself made it possible for realistic daily reports on all of the above phases to be forwarded daily to responsible agencies and thus keep authorities informed of the course and severity of events following this untoward and unavoidable accident. Upon completion of the initial phase of the study, primary responsibility for writing reports on the variouse phases was delegated as follows: C. A. Sondhaus, dosimetry; N. R. Shulman,clinical course and care; R. A. Conard, skin lesions; V. P. Bond, hematology; S. H. Cohn, internal deposition. The final publication of this monograph on humanradiation injury represents the completion of the finest in cooperation and team work of a diverse group who willingly sacrificed personal ambitions and desires for the good of the project at large. It was a distinct privilege to be chosen to direct the medical team, a real pleasure to edit and integrate the separate reports and finally realize their fruition as a homogeneous monograph. E. P. Cronurrte, M. D., Medical Department, Brookhaven National Laboratory, Upton, New York.