Thermonuclear Bombs during Operation Dominic I

This footage is from the movie "Trinity and Beyond", directed by Peter Kuran.
Operation Dominic I was a series nuclear test explosions conducted in 1962 and 1963 by the United States in the Pacific. This one was dropped from a B-52 bomber aircraft on the Christmas Island. Exact Date (1962-1963) and Yield unknown (a few megatons).