CHAPTER Il, SECTION 4 Mah cilSoi ew (Neg. No. W-V-271-12) Figure No. 2-130. erly direction from the southwest end of Irene to the east end of Helen. Concrete riprap from demolished stations on Janet was used to hold the fill in place. To facilitate the construction of Station 1210.01, a 100x100-foot man-made island was built on the north side of Helen and was connected to the island by a 24-foot-wide by 250foot-long causeway. Both the man-made island and the causeway were enclosed by 3-inch rough planking which was bolted to rail pilings. Fills for the island and causeway consisted of com- pacted pit-run coral. Typhoon “Ophelia” washed out a small part of the fill, but the damage was quickly repaired. MISCELLANEOUS CONSTRUCTION. Small Boat Pier — Nan. also located on Charlie, George, How, and William on Bikini Atoll and were stabilized areas at least 100 feet square and were also equipped with windsocks. Existing airfields on Nan, Peter-Oboe, Elmer, Janet, Tilda, and Yvonne were all re- habilitated, with the Yvonne strip being extend- ed 200 feet on the ocean end of the field. Nan, Elmer, and Yvonneairstrips were compacted and sealed with asphalt emulsion, while the other airstrips were compacted and finished using coral aggregate as follows: sub-grade compacted to 40% CBR and base course to 60% CBR. Personnel and Small Craft Piers were built at Gene, Janet, Ursula, Yvonne, Nan, Utirik, Rongelap, and Wotho. Those at Eniwetok and David, Glenn, Henry, and Leroy. All were covered with pierced steel planking, 100x100 feet, Bikini Atolls were constructed with wood or steel piling and those at the Weather and Radsafety Stations were constructed by laying decking over two or more Navy cubes. Lengths and all were equipped with windsocks. Pads were the field. Helicopter pads on Eniwetok Atoll were located on Alice, Irene, Mary, Wilma, Bruce, in cleared areas having a radius of 150 feet, and Page 234 locations of the latter piers were determined in