EVENT OPERATION YUCCA was detonated te the northeast of Eniwetok Atoll at an estimated altitude of 87,000 feet at 1440M, 28 April 1958. gical hazards were anticipated, and none developed. Fallout composed ef the device and its vehicle was considered insignificant. stations reported a rise in background intensity. Ne radielo- None of our Flash effect was like~ wise considered insignificant, BEST COPY AVAILABL E DNA TAB A