WS areentagte incronase that misnt be onpceted in tho natural It hes been estinaied that pecsibly on the mutation vate. 4 from natural causes. If so, thon, [- in an individual hte fh * i average thore might be 0.4 mutations produced this inersase would mean in- stead of carzying en these many muvcations, we might have these many mutations (fadicaiing) . if we continue cur test sorics Also, we might montion in terms of external the... activity that falls en the ground, and at the tims of sons of the larger dotonations in Hevaca from a towsr, you might find Gxoss Tission activity on the ground, end you would find withia the gunnery vance half a million microsuries at the time of fall-sut. YE you follow cno of the out to £0 or SO milos, - . « OF the fall-out paticrn, you might find sonething liko 10,099, Then, Going out to, say, avound the test site, 200 miles, roughly, on around thore, not counting this actual path of fall-out, you dros off to something like 10 microcurios por Foot. Then, at time of fall-out in the country, there might be sone snalli fraction of microcurics rer foot. In Cincinnati in the springs of 1953, it was estimated to be about half a microcurie, At Brookhaven, it was estinated to be about a tenth of a microcurie. Thosa nuubers do not have a moaning, at lcast for this group hore, tenes to got tne a it) 9 You have to go to the individu 1 With data, oe) groat Geal of meaning except in tryint to rolate thom and come up