From: Bill Lucy 

Out of darkness, Geo. says...

> > The wind doesn't blow through a postoffice and huge building.
>
> thats the reason there weren't a bunch of contaminated people downwind..
> Wind would have increased the danger.

Actually, the opposite is true. In 3D space, especially with a high ceiling, you
have a nice differential equation. With a straight wind, you could even
predict decreasing effect. In swirling winds, I don't think a prediction is
possible, but I
would tend to think an even greater dispersal and lesser effect.

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