ACKNOWLEDGMENTS
Although it is impossible to acknowledge all the assistance rendered by the manyindividuals at the Naval Radiological Defense Laboratory and other laboratories that contributed
to this project, the contributions of outstanding nature can be mentioned here. We gratefully
acknowledge the assistance of the following people:
CAPT. R. A. Hinners, USN, CAPT. A. R. Behnke, MC USN, and Dr. P. C. Tompkins, who
made available all necessaryfacilities of the laboratory to pursue the many diversified aspects of this problem.
Dr. E. L. Alpen assisted in the administration of early phases of this project and assisted
in the pathology studies conducted.
H. H. Hechter performedthe statistical analyses of the data.
Miss C. Jones prepared autoradiographs of animal tissues.
Dr. W. P. Norris, Argonne National Laboratory, made autoradiographs of animal tissues.
Dr. R. Reed performed the microscopic pathological study of animal tissue.
LTJG R. Sharp, MSC USN, and LT W. H. Chapman, MSC USN, Naval Medical Research
Institute, assisted in the collection of the biological samples.
C. A. Sondhaus assisted in the mathematical calculations of the external and internal dose
to the animals.
Dr. E. R. Tompkins made available the facilities of the Chemical Technology Division and
provided technical advice on the radiochemical aspects of the project.
Lt Col R. A. Veenstra cared for the experimental animals.