Two weapons were detonated at the Enewetak Atoll as part of Operation Ivy in 1952 . One of them , Ivy King , was the largest pure-fission bomb ever detonated , with a yield of 500 kilotons , and the other , Ivy Mike , was the first hydrogen bomb device ( it was too large to be an actual weapon ) , with a yield of 10.4 Mt
Ivy King
Ivy King
Pacific Proving Grounds