67 In the fallout we found 2/10ths of a microcurle, total fallout that is ine tegrated over the entire area that was sampled in the first case 20 microacuries and 50 microcuries in the last case. We also measured the activity in the alr at 25 feet away from the fire and in no case was it above four disintegrations per minute per cubic meter either of alpha or of beta activity, The maximum distance as we dietributed the stuff and this is distance to actual background megsurements with about a thousand feet in the case of seven tons of material. To give you some idea of the appear~ ance of the experiment, I have a small chart here that will show how it was done. This was & second exveriment and we had pretty food wind predictions on this. The atmos- phere was pretty stable and therefore we set our sampling array only at a 90 degree aro awry from the burning, The samples as you can see were set out to about a thousand feet in this 90 degree on relatively short arcs, The entire fallout occurred within