Color Footage Of The Largest Nuclear Weapon Ever Detonated By The United States

This is a clip of the Castle Bravo nuclear test detonated February 28, 1954 (according to the DoE) at Bikini Atoll in the Pacific Proving Ground or March 1, 1954.

Castle Bravo at 15 Megatons (MT) was the largest nuclear test conducted by the United States.