[XBob]

Interesting idea, estimating the location.

At this point, I would estimate that the molecules are floating somewhere over the mid-atlantic.

I don't think any of the western 'flares' reached the ground. However, I may be wrong. That big one may be out there somewhere, but it seems to me that the flares over Owens Valley were only small ones.

[Cold Heat]

Agreed, but if it is a tile, it may well have survived.

It would have floated with the air currents (because it is so light) and could be anywhere.