Danke DoDo, at least one of my questions is answered. The presentation shows anthropogenic fallout worldwide at 3.8%, based upon stats from 1992, (Adapted from UNSCEAR Report 1992,and Life environmental
radiation」Former Science and Technology Agency ( Japan), but of course who knows the accuracy of the stats.)

Strange that the per person levels for Japan are much lower, with medical radiation so much higher (that i understand, as compared with say Cote d'Ivoire.) In fact, what factors were used upon what data foundation to get a worldwide per person dose?

"Life shrinks or expands in proportion to one's courage." - Anaïs Nin