Military accidents usually involve the loss or unexpected detonation of nuclear weapons . The Castle Bravo test in 1954 produced a larger yield than expected , which contaminated nearby islands , a Japanese fishing boat ( with one fatality ) , and raised concerns about contaminated fish in Japan . In the 1950s through 1970s , several nuclear bombs were lost from submarines and aircraft , some of which have never been recovered . The last twenty years have seen a marked decline in such accidents
Castle Bravo
Castle Bravo
Nuclear technology