aeBEY (continued) through into the weather layers. If that's true, it wuld be shorter; and ae, if you contime to make these observations, you're going to continus cver years to see radioactivity ocue out in a were oy less uniform fashion all over the wrld. WEXLER: Now let me ask this, Dr. Libby. Is it possible far the stuff once it's been deposited on the ground to gat evept uw to the atmosphere again? LIBBY: I should think not. VOICE: Why not? LIBBY: Row could it? TGks LIBET: Attached tc windblew dust, or something. Oh, but isn't that very mincr as compared to — I mean, the chance of a given dust particle being pioked uw and put back into the air is wery minor indeed and I fmagine... WEXLER: T don't know, we have terrific dust storms, as you imov, in certain areas in the world. PLESSETs . I think 4t aleo ecmes back to the question of the ebservation Ben Holsman made between what's way watairs and what's intermediate. Is there a contimal mizing at all layers — those that are closer nix mcre and those that are farther apart nix less? Can you really sharply distinguish between what's wesetairs and what's intermediate’ qn DUE ARCHIVES

Select target paragraph3