It looks like I was going off bad information. I ran the numbers (as best I could) in the Nuclear Bomb Effects Computer[1] and I'm getting a radius of about 1m

It looks like I was going off bad information. I ran the numbers (as best I could) in the Nuclear Bomb Effects Computer[1] and I'm getting a radius of about 1mi. The Wiki author claims to have run the same calculation with the same computer and come up with 2.2mi, though he later contradicts himself by saying the 5 psi contour at Hiroshima was at 1.1mi. [1] http://www.fourmilab.ch/cgi-bin/Bombcalc?yield=15&yunit=1&range=1&runit=1&rotate=0&imsize=800 http://www.fourmilab.ch/cgi-bin/Bombcalc?yield=15&yunit=1&ra...