In actuality the tolerance value calculated by the tvo thods, Dr. Bugher, - I think comes out very elose if you put in the factor of 1, wnich is vhat the group has done. identical. in other vords, tt comes out almost When you take 1 microcurie of radius and if you then into account the ratio of energy of radius as compared vith strontium whieh {fe about . 10, and in addition the factor five for effectivences of isotopie versus _ beta topics, you come to five microcuries--which certainly agrees vithia the accuracy of these nusbers, I am just pointing out that there has been an internatiopal agreement on this case on the tolerance figure and that is the one on which ve Well, I think that it makes a difference vbether you are dova to one microcurie. If 4t 19 forned right from the then {0 fs ettrituted to all the bone, snd you voulda't have to take a factor of ten. It seens to me that it is in agreenent. Wits this I agree entirely. . ype Well, it strikes me as a somewhat low figure. fot that of 1 aferocurie body burden for sr”, , ve ak 88 ttn eyo ih eres, a he gf crac te