What I'm not finding is what I'm looking for: the effects of sandstorms upon people. I've got a couple of firsthand accounts, but I'm not getting things like what'd happen if a person stayed out in one too long, what happens to exposed skin, how long one can wear a scarfthing before it gets too clogged to breathe, etc.
So, any information of that sort I'd much appreciate. Medical accounts would be dandy, as would firsthand stuff; pictures are a plus.
Thanks in advance!