Roger,
For What Its worth: Sandy is always at the Blade show each year. I have a business card somewhere...will tear the shop apart to find it hopefully.
Regarding working with desert ironwood. I always wthout fail do two things when working with it: 1) My "attic fan" in my shop window is on high to keep things ventilated, although it is not as bad as cocobolo dust....to me anyway. Sort of like when I am flat grinding stag in my shop...if the air aint moving stuff out of the shop, I will pay the price. And 2) I always bite the bullet and use completely new belts to sand it, no exceptions. Usually, you can use a belt on handle shaping that may not be brand new, but still have a good bit of life left...know what I mean? Not so with ironwood...got to be spank brand new, or you will burn the wood for sure.
My two cents worth from someone that probably is nowhere as experienced as the average poster on this forum...