INTRODUCTION Bikini Atoll 11°36' N, 165°22' is E£. Ti located in the northern Marshall The atoll Islands now consists of 23 small at coral Surrounding a lagoon 35-km long, 21-km wide, and 630 km@ in area. depth of the lagoon is 45m. about islands The average The total land area of the atoll is 6.2 km@, The Marshallese island names and the code letters and numbers we have assigned for reference to the islands of the atoll are shown in Table 1}. Bikini Atoll is one of two sites in the northern Marshall Islands used by the United States as testing grougds for nuclear devices from 1946 to 1958. The U.S. code names for the nuclear tests! are shown in Table 2, and the approximate locations¢+3 of these tests are indicated in Fig. 1. The locations in Fig. 1 designated by the letter "K" are old disposal sites for of the tests were detonated on barges anchored in the lagoon or on the reef. OI Most Two tests were air drops, weet island debris removed in the 1969 cleanup of Bikini and Eneu Islands.4 under water, and three were surface ee fan TL Table 1. two were Present islands of Bikini Atoll. Assigned island locator letter and number? Marshallese name Assigned island locator letter and number? | Marshallese . name B-1 Nam B-13 Aerokoj-Aerokojlol B-2 Iroij B-14 Bikdrin B-3 Odrik B-15 Lele B-4 Lomilik B-16 Eneman B-5 B-6 Aomen Bikini B-17 B-18 Enidrik Lukoj B-7 Bokantauk B-19 Jelete B-8 Iomeler B-20 Adrikan B-9 Enealo B-10 Rojkere B-22 Bokoetoktak Eonjebi B-23 Borkdrlul B-11] B-12 : ~B-2] Oroken Eneu a Names and codes underlined designate islands with fishing sites. 500055b —