Radiation dose chart MAR 21 2011
With the assistance of a nuclear reactor operator, Randall Munroe came up with this handy radiation dose infographic. Doses recorded near the Fukushima plant compare to those from a single mammogram or dental x-ray. A note on how to use this chart:
If you're basing radiation safety procedures on an internet PNG image and things go wrong, you have no one to blame but yourself.