| LIBBY (continued } Ad in the limestone eveutually ami we don't know how fast this ccours, so wmybe things are all right, tut there is a way in which radicactivity can be taken cut of the life aycle and that is by putting it at the betters of the cosan, CIA: There is a point that I would like te call attention tc that baan't been mentioned yet as far as I mew. I find it very difficult to get eoncerned about what's going to happen te the husan race if 900 megatens or 8000 asgatons or bembs have te be discharged before we can reach possibly a serious level. On the other hani, if power reactors come inte being in any appreciable amount we will have very sizeable ancunts of fission products and * ence ade 6 calculation vhich aay or my not be abselutely ccrrect « that in only 100 days, if we were to furnish the power requirements for the United States in 100 days we would have used up as much fissionable material an uve involved in 10° nominable bombe. LIBBY: That scunis te ws too high. CIA 1 That my not be absolutely ecrrect, I went through the figures a time or two and didn't find aqr error in it, but anyway scasthing of that order. It will not take an avful lot te create a tremendous poasible hazard in terms of fission products if they are iniiscretely distributed over the earth's surface. DOE ARCHIVES