(indicatedas a 2&fathom shoal on Sheet No. 6033, ~iwetok Atoll, U. S. Navy, HydrographicCffice) was selected as this point could provide, with p~per orientationof the tower, adeqmte photo coverage of all three Zero Islands. On 19 Jan 48, the YCV-17 was ~ved to the tower site, anchors were set, and the following day two H-beams were driven. Penetrationwas 15 feet and 28 feet, respectively. The next nine days saw a recurrenceof bad weather, and no further pile dri~% was possible. This period was spent in fabricating clamps and bracing, and splicing piles for future use. on 30 Jan 48 two piles, spliced to a length of 65 feet each, were dfiven to refusal. A penetration of ~ feet was obtained. Three days later two 50-foot H-beams were driven as better piles for the generator platform foundation,and the following. day the remaining two batter piles were set and driven. Approximately 15 feet of penetrationwas obtained on all batter piles. Installingof beams and girders, horizontal and cross-bracingwas carried on concurrently on the two foundations. Concreting of the tower foundation piles was started on 8 February, completed on the Ilth, and the following day MK-PK started erection of the photo tower. Fabrication of tower sections and the use of the Northweet 580 crane with its 80-foot boom on the deck of the YCV-17 permitted erection of the photo tower in record time; less . than Ii working days. Work on the generator platform continued until 19 February, when the YCV-17 was moved to the causeway site. Early h March it was decided to cut off the horizontal bracing within the tide range to eliminate vibrations due to wave action. This work was done on 9 March, and an additional concrete cover was poured around all steel 51 Section XVI ‘1