1954 March Evacuated Uiieik Rongelop ond BRAVO Detonation | | Utirik 1954 June June 1957 April 1958 Reinhabited Rongelap “First InSitu™ 1962 1963 1958 May Atmospheric Testing _—US.S.R., U.K. Peok U.S. Detonation CACTUS April - August 1958 Hordtack Phase I Reinhabited Rongelop WBC ot March - May 1954 Castle Series 1981 August ond Utirik Recent WBC Survey at Rongelop June 2072 Levels Kadiation Estimated Return to Background