(continued) that one might retain sbout Sf, retain in the skeleton 5% whet 1¢ inheles, and I get an inhalation hesard repreqenting Gepositioa in the skeleton of about the same order of wagnitude as I obtained by making assumptions somewhat sinilar to those which have just been discussed froa the point of view of indigestion, I have a factar of difference of 5, Ib these assuaptions up here assuzs only exchangeable caloit don't they? Isn't that right, didn't you use a figure fd exchangeable calciua up here? VOICE: Yess WESTERR ¢ And the figure I had was to correspond more to the total [amour of caloium so on that basis the inhalation hasard is rcoug: about 1/5 of that indicated here. We are talking about a \ the sexe type of hasard so that the question of what is tolerenceoes not enter in. I might indicate also that if one begins | consider the inhalation hasard as being relatively nor as coe might if he finds a certain musber of processes tat place, preventing the stuff from being picked up by plants. Experinents of Dr, Larsen show that in tice there is en | unexpected cessation of uptake so that the inhalation } might becone relatively important. Then one also might want te consider the hasard due to sr77, It is ocmmonly assuned ithat what je inhaled is in sufficiently exall particle to be doluble and gets to the blood steam and is deposited in the bone] We don't have the factor of safety here/that we have when wi sbout it coming to the the food _. talk Mere we EN es 5 tr. . td: : f 7s, . Mf me ee ABZ