* BoxGB? saying. Kanely, in a very young individual vhe is expo level of Br” you would get a more or less uniform dt tion. In an afult, I suppose, you would get deposition mostly et the | you had the sane levelof Sr” tn your caleiua then this exist in that pert of your bone which ts recently deposited, anf therefore you would have to get the same level of 8” per calcium radioactivity. SOLOMOR: Z think that Evans has got some unpublished estimations there are hot spoteof ealetum 45 in the bone that are as much as five tines the mean deposition. I haven't read the peper, and this is j I have beard so I think that it may very well be quite an distribution. — LIBBY: centineter for fast particles. How the linit of the betsby tren is 2,000,000 volte) ve assuse that the average wus 600 tiLovolte and600 Kilovolts is not quite afast particle so you get 3/10ths wba yer se wi . os 5 Well, you have about tve aillfon volt energy losses yer agran per square centineter range. , LIBBY: Provably a little more dense than water. BETHR: Yes, eo you may get 2 tneters. LIBBY: So any structure finer than that {s of no consequence. Dorcrtrent of Bhergy pr! steele dw som Ohia me ~ ow. ad w3/