oa Q Y-plus-1 a survey of ZERO island was completed and detailed charts sharing activity found were delivered to the Scientific Director and to the Radiological Safety Officer, The recovery of samples to be used in obtaining technical measure ments data continued as did work on lagoon water surveys, C A resurvey of the ZERO island and collection of soil samples fran the vicinity of blast footings was carried out on Y=-plus 2. Additioral crater survey operations were also completed at this time. A survey of perimeter islands was conducted to determine the presence of any fallout or water contamination, This information was repcerted in detail to the RadOps where a complete report was prepared. Equipment which had been cached on the ZERO island was recovered and showed only slight evidence of damage. On Y~plus-9, Captain Draeger and Candr. Langer departed for the United States to begin work on their samples, ZEBRA Test. Following the same procedure as for previous sts, preparations for ZESRA were accamplished in a manner which appreciably reflected experience, Cpe ' “< : The mission for ZEBRA involved essentially t’ » same schedule as Lom before, A new schedule was prepared, and the policy of shifting assign Gfs ments of individuals in order to broaden their scope of experience was dee again effected. On Z-minus-3, Commander Alvin W, Slayden, USNof Op-36E, {£. Colonel Willian S, Cowart, USAF, and Commander Thomas R. Fonick, Canminder, Rear Echelon, TG-7.6 arrived aboard the 2AIROKO from Washington to observe the ZEBRA shot. - 64 - i i : - ae . r *- om: - opPR, . ay yee oan a ly a mo ~. “sy ~D - o . oo