In article ,
Gopher wrote:

Most of this country (perhaps all) is short of fluorides. If the
ash is dense enough here to cause toxicity, we will have a global
winter on our hands and more serious things to worry about. With
the possible exception of Shetland and the VERY far north.

There could be matters of greater concern on the horizon (assuming they
are visible!).

http://www.timesonline.co.uk/tol/new...cle7070239.ece

Precisely. And, even if the wind is towards us, the ash STILL won't
be dense enough to cause significant (or any?) toxicity. The acid
rain may kill trees, as someone else pointed out, but that will be
a different and shorter-term effect.

Oh, and it's not Yellowstone that I should have mentioned: it's Long
Valley (Mammoth Lakes). Smaller than Yellowstone, but has been
twitching for 30+ years - including a 2' change in the level of the
valley floor! Still, I can view an event that might take out Las
Vegas as having a positive side.


Regards,
Nick Maclaren.