built to link them. This causeway was constructed from onsit@ and shored on either side by bulkheads. materials Before the CASTLE segies got underway, Eneman, Lele, and Bikdrin islands had also been linWed with the airstrip islands to form a complex 3 miles wheeled vehicles. (4.8 km) long, traWersable by Additional causeways were constructed in 1953 that Joined Iroij, Odrik, Lomilik, and Aomen islands in the northeastern arc of the Bikini islands. A causeway westward over the reefs from Nam in the northwest portion of Bikini was also built during 1953, termimating at an artificial island that became the detonation point for BRAVO, Jthe first test of the CASTLE series. Camps were also built on Nam, Lomilik, and Eneu to house nstruction workers building the test-related structures on or near these fislands and island complexes. tion was (POL) According to the directives of the AEC, al} to be of an expendable nature. A petroleum, oil, and construclubricants storage area was also built on Lele to serve the main c Kini at Eneman. Figure 9 shows the Eneman base camp viewed f goon looking south-southwest. for the KOON device. The large building in the centd@r is the cab The island to the right is Enidrik and line shaved down its center for s a blast the KOON test. Radiological Conditions in 1954 The CASTLE planning literature refers to a detailed andc survey of the radiological condition of the islands at Enewet just before CASTLE. No record, however, has been found of this. There- fore, in order to assess the possibility of task force personel exposure to ionizing radiation while preparing for CASTLE, it is possilfle only to discuss the test activities that had taken place at Enewetak d introduce any anecdotal or partial information that is available. Enewetak had been used for nuclear tests in 1948, 1951, a SANDSTONE (1948) 1952. detonations on Enjebi, Aomon, and Runit left these -islands contaminated. In February 1949, a survey party [from the Hanford, Oak Ridge, and Los Alamos laboratories of the AEC fo 47 The