PREFACE Patrol Squadron ONE, U.S. Navy, operated the aircraft used for the aerial surveys. The author gratefully acknowledges the diligence and high professional competence which contributed so much to the project’s operations. ; Commander Kelly, USN, was the Air Officer on the staff of Commander, Task Grouf'.3. His efforts were responsible for the fulfillment of the project’s aircraft requirements. Members of the Health and Safety Laboratory, U.S. Atomic Energy Commission, whoparticipated in the field operations, and whose contributions are gratefully acknowledged are I. Whitney, G. Hamada, S. Tarras and T. French of the Analytical Branch, H. Sadowski and F. Wilson of the Instruments Branch and K. O’Brien of the Radiation Branch. POE ARCHIVES