On 2 June 2014 17:36, Sean Breheny wrote: > Wikipedia says 50Mt was the actual yield and that it would have been 100M= t > had they not reduced it: > > http://en.wikipedia.org/wiki/Tsar_Bomba > > OK. I knew it was a factor of 2 - but I went the wrong way. Try another from memory :-). Starfish Prime was about 25 MT and the largest the US made. About 25% more yield than expected. Led to a most unlucky "Luck Dragon" and beautiful sunsets in N. Russell --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .