Declassified U.S. Nuclear Test Film #41

8:25 as predicted no wildlife was harmed = BS or Ignorance

what was the purpose of containamating an Alaskan island??

It was in the close vicinity of 5 megaton.
This video is strangely incomplete. I've seen better ones about this event.

Effort was made to prevent such large effects from Cannikan. In particular, a large, spherical chamber was mined outwards, starting at about 6,000 feet. The warhead was detonated in the middle of the spherical chamber, possibly with shock absorbent material. It didn't work that well; as one person says, "It really coupled to the ground".

How can they claim that no radiation was released when you can see part of the damn fireball coming up out of the ground?

Sorry to burst your bubble, but that was no fireball sticking out of the ground, that was a photographic glitch or disturbance envolving the camera station's reaction to the intense shockwave.

"less than 5 megatons" my ass