Coincidentally ,there was a doco last night called "World's Biggest Bomb". In part,it dealt with Soviet HIGH ALTITUDE Soviet nuclear testing in 1961. The radioactive clouds drifted for HUNDREDS of miles and effected many thousands.
It's a National Geographic film so should be available elsewhere on line if the link below doesn't work.
http://www.sbs.com.au/ondemand/video/224...ggest-Bomb
It's a National Geographic film so should be available elsewhere on line if the link below doesn't work.
http://www.sbs.com.au/ondemand/video/224...ggest-Bomb