Did I understand Dr. Kellogg to say yesterday that it didn't require dpe per for something like a hundred es of afr? KELLOGG: Yes. There vould be one disintegration per 10 oa to equal comic ray backgroundt. KISENEOD: That's an exesesdingly high eoncentration. BACHEA: I should think that it is pretty big. LIBEL: If you really spread 1t through the air and figured it cut, 4t's about 107 BACHER: It's 1,000"Bice cf ovantc ray background. KELLOGG: Which is 1,000%"; BACHER: The Mike aloud. LIBEY : So 4t aouldn't be checked, tut it's still an important question, even if it is only 1000™ of cssnic ray. HILL: What you need is a sample, « large volume of air for radicatrontiu cocthe most practical thing I can see is rain sampling on a glcbal basis, in perieds when they haven't shot bombs for a long time, 90 we cught to get busy and start sempling all. over the world more or leas right away, witil the CASTLE series starta. KELLOGG: Well, I think, there are two things I'd like to bring in here. The firet is to go back a little to the session of how long would a nie . ee ' hot DUE ARCHIVES oe ‘y?, _.SENBUD