The only information I have worth sharing here involved Desert Ironwood. I'm not allergic to it (yet), but my son is already. I was power and hand sanding a Desert Ironwood handle and I went to look up something on our desktop computer. My son sat down at the computer after I went back to the garage. In less than an hour the bottom part of his forearms and his wrists were covered with a poison oak/ivy type rash that took a few weeks to heal.

Be careful to not bring dust into your house after grinding or sanding these woods. Take off your clothes and keep them in your own laundry pile or bin, wash your clothes separately and take a shower. It also might be a good idea to keep antihistamines around.