49 CHAPTER II, SECTION 3 A total of 3,735 lineal feet of 3x12-inch planks and 3,200 cubic yards of fill were utilized in the construction of this island, and 256 cubic yards of concrete were placed for guy anchor blocks. The causeway was approximately 150 feet long by 70 feet wide and led to the manmade island, which was 110x170 feet in size. A special base was provided for Tower 1, which was a concrete structure 24’x24’x11’ deep in which were incorporated tower footings, elevator pit, and the embedded steel recording shelter of Station 3011. ° . . ~ , Y oy Rte . 7 7 4 Phe Figure 2-28. a~ SUS “ oes aSay Nee = wee aiiBATS! FR Pre-Assembly of Tower Components Prior to the erection of the Station 4 tower and otherscientific structures at Pearl, one-half of the island was cleared of tropical overgrowth. This clearing covered an area 3,000 feet long and 475 feet wide on the lagoon side of the island. In addition, a channel was blasted in the reef and a ramp was made in order to accomodate LCM, LCU and DUKW craft used for transporting equipment, material, and personnel involved ore Figure 2-29. are Station 1- Note Guy Anchor Blocks on Reef Page 2-47