a) ne kaa ota, 4 INTRODUCTION This is a preliminary report, and therefore does not give either coxplete or final results of the work of the various projects. No information on the construction of the device ig included in order that the classification may be te kept to Secret Restricted Data, DELETED meQEaE)devicewas dropped from a B-52B on May 21, 1956, and was detonated at 0550:38.7, The target was near the center of Nanm Island on the north side of Bikini Atoll, at an altitude of 5000 feet, The actual rural position was approximately 20,000 feet northeast of the target and actval height of burst was approximately 50 feet. Although the error in burst point caused considerableSLE aey was determined that the device perforned satisfactorily E> a . COPIED/DOE ¥ LANL ROY 3 -~5- f|