At 8am on October 3, 1952, an atomic bomb - as big as the one that had destroyed the Japanese city of Nagasaki seven years earlier - was detonated about 100km off WA's Pilbara coast. The mushroom cloud from the detonation rose 4.5km from a bay in the middle of the isolated and uninhabited Montebello Islands. Read more
Operation Hurricane was the test of the first British atomic device on 3 October 1952. A plutonium implosion device was detonated in the lagoon between the Montebello Islands, Western Australia. Read more