Further tests did occur in the Pacific, but they were in the vicinity Island 4 so far to the east that there of Johnston Island and Christmas These tests followed the 1 September 196] was no effect upon Eniwetok Atoll. announcement by the U.S.S.R. of its intention to resume nuclear testing. The U.S.S.R. tests occurred within days of this announcement. Many months later the United States started testing under a series called Operation Dominic, but, as just stated, not at Eniwetok Atoll. This test series was completed by the end of 1962 and was followed by the Limited Test Ban Treaty, which was signed in September 1963. This Treaty prohibited all nuclear tests except those conducted underground. Although underground tests have been con- ducted in the continental United States “and at Amchitka in Alaska, none have been conducted at Eniwetok Atoll. . In these test series, a total of 43 nuclear detonations or attempts ut nuclieardetonationus have been made at Eniwetok Atoll. The geographical distribution of these 43 tests follows: it Island Name Number of Tests Board of Geo. Name 18 10 4 3 2 1 1> 1 ‘1 1 1 14 * ** . * se Marshallese Runit En jebi Aomon *Eberiru Bogallua Runit Enjebi Eluklap Aomon Aleleron . Buganegan Bogan Elugelab Aranit Bokoluo ' Lu jor Mut Boken U.S. Code Name . Yvonne Janet Flora* Sally Ruby Alice Dridrilbwi j Bokaidrik Bogeirik Rujiyoru ; Other Mui ; Pokon Gene** Helen Pearl Henry Irene Information obtained from W. Robison, Lawrence Livermore Laboratory, 16 January 1973. This island no longer exists. This island no longer exists. It was removed by test Mike on 1 November 18 It was removed by test Koa on 23 May 1958. underwater craters from Mike and Koa overlap each other.