Suspicious video clips were released to test the most powerful bomb the United States has ever blown up this week.
The images show a mushroom-shaped cloud rising to the sky after a bomb, "Castle Bravo", explodes on a remote coral island in the Pacific Ocean.
The test force, carried out on March 1, 1954, caused widespread radioactive poisoning among many nearby atolls.
The "Bravo Castle" was the first in a series of high-impact nuclear thermonuclear tests conducted by the United States at Bikini Atoll and the Marshall Islands. It was also the first American test of the hydrogen bomb, one of the most powerful weapons, resulting in its destructive power 15 megaton tons of TNT.
The final objective of the operation was to test designs for a powerful nuclear weapon, which could be transported by aircraft.
Radioactive consequences spread to nearby atolls, leading to the evacuation of 253 people from the islands of Rongelap and Utrik, for medical care.
The disastrous test prompted many to call for a ban on air testing. After 1962, all nuclear tests were carried out in the United States underground, most of them at a test site in Nevada.
The US military has not conducted nuclear tests since 1992, and it is now preferable to use computer simulations to calculate the impact of newly developed weapons.
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