nel arrived in the field. Preliniunary hematologic studies indicated that the indivaduals probabey had not recerved acutely fatal dases of radiation. The primary responsibilities within the prog ect grimp were delopated as follows: Chiaueal observations and care 1TON. R. Shulman, MC, USN Oryvanization and operation of laboratary LT WW. S. Farr, MC, USN Compilation and daily analysis ol all data Dr. Vo P. Bond Decontamination and radiation measurement LT (je) Ro Sharp. MSC, WSN Senior Petty Officer in charge of laboratory POOK. Schork, TIMC, USN As the climeal preture developed, a further breakdown ip responsibility was necessary. Com Inander R.A. Coaard, MC, USN, and Et Col Lo BB. Browning, MC, USA, were oiide rosponsible for a daily survey of skin lesions, and Or, S20. Cohn wis made responsible for studying the problems concerned with the exeretioan af radioisotopes amd the estranites of body darrdems on {he cxposed individuals. The projgect officer commends all of the professtonal and technical members otf the proup for their exeellent motivation. itiative. and voluntary long hours of extra work tliat were es sential for the accomplishment of the clinical and research objectives, and for the rapid col- lection of the preliminary data in the field. It is emphasized that the work was a cooperative endeavor in which all were mutually dependent upon cach other. The welling efforts of all concerned constituted a remarkable example of team-work and sacrifice of personal ambitions and desires .or the good of the project at large. The authors wish to express their gratitude and indebtedness to Dr. John C. Bugher, CAPT Van Tipton, and CDR Harry Etter; CAPT W. E. Kellum, MC, USN, and CAPT T. L. Willmon, Conunanding and Executive Officers, respectively, NMRI; CAPT R. A. Hinners, USN, Director, NRDIL., and CAPT A. R. Behnke, MC, USN, Associate Director, NRDL., all of whom pave un- limited support and reduced administrative procedures to a bare minimum, thus making it possible for the unit to be assembled and underway in a matter of hours. On arrival at Kwajalein, RADM R. S. Clarke, USN, Commanding Officer, U.S. Naval Station, Kwajalein, supparted Project 4.1 with all the facilities at his disposal. As a result, it laboratory and clinic was established and operating within 24 hours after arrival of the propect personnctl, ' Project personnel also wish to acknowledge the outstanding contributions of Col C. S$. Maupin, MC, USA, Field Command, AFSWP, CAPT H. H. Haight, MC, USN, Division of Mililary Application, AEC; Col K. Houghton, MC, USAF, Special Weapons Center; CAPT Donald Dement, MC, USN, CINCPAC Fleet; Drs. T. L. Shipman, T. White, and P. Harris of Los Alamos Serentific Laboratory; Dr. Gordon Dunning, Division of Biology and Medicine, AEC, and Dr. G. V. LeRoy, University of Chicago. During all phases of the early care of the exposed indi viduals, the foregoing participated as much as their other primary duties would permit. In addition the authors wish to thank them for the extensive and complete data which they collected inthe atolls or their home taboratories and kindly furnished to the project personnel. The continuous help and cooperation of Trust Territory representatives and their aid in obtaining necessary control data on native Marshallese at Majuro is hereby acknowledged. The authors are particularly indebted tu Mr. John Tobin. His help as an interpreter and his extensive knowledge of the Marshallese language and habits were tnvaluable. Liacutentant J. 5. Thompson, MC, USN, furnished his records on the exposed tndividuals decontaminated by the radiation group of the VP-29 squadron stationed at Kwajalein. The authors wish especially to express their admiration for the excellent job done by the medical personnel of the U.S. Naval Dispensary, Kwajalein, in completing the extensive Laboratory examinations that were required to obtain a prompt initial evaluation of the severity of the radiation injury. The authors are deeply grateful to Dr. David A. Wood of the University of Cabfornia Hos pital, San Franeciseo, and Dr. Edward L. Alpen and Miss Pat Roan of NRDL, for invaluable aid in carrying out the histopathological evaluation of skin lesions. The extensive contributions of Mr. H. H. Hechter in the statistical analyses of the data, and of Mr. C. A. Sondhaus of the NRDL in dosage caiculatrons are yratefu ly acknowledged.