CHAPTER tI, SECTION 6 Figure 2-209. Causeway - Sugar to Tare Peter to Roger - Approximate length 3000 feet. Roger to Sugar - Approximate length 1000feet. Available bank and reef coral was used, the surface being traffic compacted and stabilized with sea water. From May 1953, when first opened, until heavy construction started and traffic to and from the batch plant on Oboe increased materially, single-lane roads were adequate. In August 1953 approval was obtained to widen these causeways to provide for a 25- foot road and toraise the elevation to plus 8.5 feet in order to minimize washouts at h‘ch tide. Final completion was on 5 September 19-3. CONTRACT ITEM NUMBER A-26-26.1 CAUSEWAYS TARE AND CHARLIE GENERAL. In March 1953 it was established that causeways would be required on sites Charlie and Tare for the vacuum pipe arrays to be used in connection with experiment; at those sites. Straight lines 7500 and 5600 fe-c in length respectively, were necessary, conne:'ting the Scientific Stations at their ends. By suit- ably locating the Scientific Stations involved, it was possible to obtain these pipeline lergths with the construction of a causeway app -oxi- mately 3000 feet long extending westward from site Charlie, and a causeway 1100 feet !ong joining sites Sugar and Tare - Figure 2-209. The Charlie causeway included at its end an island approximately 0.8 acres in area at elevation plus 10.0 feet on which were located Stations 20, 1110, 1202, 1351, 1560.02, 1812.01 and a number of scientific tents and trailers. Both causeways were also used as access roads. The Charlie causewaylocation and approved borrow areas are shown on Figure 2-211. ENGINEERING. Criteria for location of the pipelines and pipeline causeways were finalized in the Home Office early in March 1953. The location selected for the Tare pipeline and causeway was reviewed and checked by Field Engineering, insofar as possible conflict with the de- velopment of Tare campfacilities was concerned. Drawings showing the plan and profile of both causeways were approved in May 1953. Field Engineering processed the necessary work orders, surveys and inspection of construction. CONSTRUCTION - CHARLIE CAUSEWAY. This causeway was 87 feet wide at an elevation of plus 9.0, and was lt ulkheaded on the lagoon Page 2-209 “ 8 news PantitheOE Sicla, cand