[mewzilla]

Intersting link on that subject....

Acute Pulmonary Affects of Mt. St. Helens Volcanic Ash

[Quix]

Thanks for the link:

Acute Pulmonary Affects of Mt. St. Helens Volcanic Ash

http://chestjournal.chestpubs.org/content/81/5_Supplement/71S.full.pdf