Scientists calculated in 2010 that during the lifetimes of members of the Marshall Islands population , potentially exposed to ionizing radiation from weapons test fallout deposited during the testing period ( 1948-1958 ) and from residual radioactive sources during the subsequent 12 years ( 1959-1970 ) , perhaps 1.6 % ( with 90 % uncertainty range 0.4 % to 3.4 % ) of all cancers might be attributable to fallout-related radiation exposures . By sub-population , the projected proportion of cancers attributable to radiation from fallout from all nuclear tests conducted in the Marshall Islands is 55 % ( with a 28 % to 69 % uncertainty range ) among 82 persons exposed in 1954 on Rongelap Atoll and Ailinginae Atoll , 10 % ( 2.4 % to 22 % ) for 157 persons exposed on Utirik Atoll , and 2.2 % ( 0.5 % to 4.8 % ) and 0.8 % ( 0.2 % to 1.8 % ) , respectively , for the much larger populations exposed in mid-latitude locations including Kwajalein and in southern locations including Majuro
exposed in 1954
Castle Bravo
Pacific Proving Grounds