ga INTRODUCTION This is a preliminary report, and therefore, does not give either coaplete or final results of the work of the verlous projects, No in- formation on the construction of the device is included, in order that the classification may be kept to Secret Restricted Data, tePELETEsevice was detonated on the north end of Runit Island, Eniwetok Atoll, at 0625:29,8, May 5, 1956, local tine, as a ground shot. CWDFLFTED.Ss designed as an externally initiated, (JELE]fart- u rl) y Therefore, the ve ctegnostic experinents included neesurscents on fireba)l yield, radio~ — everical yield, exterral nzution threshold detectors, alirha transit Time, perroissnce of the eNS units, ete. Lthepoh Fecause of its o.pected sfeld, wo gt ve seades en nersoy pcevice 1+s 2lso used energy sour+ ce{ rT 7 PRETED i =| DELETED. = = ~ . 1 So to deterzine nucleer wilnerability of stock pile ‘capons, end a variety of weapon effects tests. Was .2pQ0 gtvss ale tts of the work of Tesk Vrits 1, 3, and 4. Wie Werk of cther Task Urlts vas etther in suvport of the units nention- wd, or concerned with the deternsticn of the cevice, and will be described Tne yield was about 39 KT, approstrstely es predicted,. TTT — DELETED The { | ard opticel brightness experitents worred « well, es did the verlous effects méasurenents. Ne cOPlen/DCE LANL RC ~ | -4wa