Maybe you've seen this and maybe you haven't, but icedog spurred me on to find some information and put it up here as I didn't easily find anything in the forum already addressing so much at once regarding general safety and specific precautions working and especially sanding with different woods.
Please add more information if you have it :)
http://straightrazorpalace.com/srpwi...hp/Toxic_Woods
Moral of the story: wear a mask!