71 A VOICE! Would there be any advantage in having a low stack? MR. HARRIS: A VOICE; Hardly. Would it increase the exclurion area somewhat? MR. HARRIS: It would increase the distance away, that the material would be found. MR. EISENBUD$ Boys, the nuisance is from the smoke and not from the activity. MR. HARRIS: I think this lact time that I showed that at ebout four or five hundred feet we had reached a background which was found gomewhere, to be at Cleveland from tests We are not introducing a great deal of material into the air. MR. BUTENHOF?S? the type of combination ordinary laboratory? MR. HARRIS: laboratory waste. MR. BUTENHOFF? Doeg this increase that you find in the This was a general In the cace of some