[backhoe]

Yes, indeed- or an reasonable extrapolation.... there are relevant links in the ones I provided, but here's what a Chinese 300 kiloton test shot produced:

[Dog Gone]

There have been single Soviet H-Bomb tests conducted above ground that have given us more radiation fallout than what India and Pakistan could do with all theirs' combined.

[Domestic Church]

Thought I read somewhere that the winds over there blew in different direction during the winter months...we need wind pattern info more recent than 1955. Also, how does the level of explosion( subterre, ground or airborne) play into radiation dispersal at that high level?

(looking in the cabinets for any potassium tablets)