Many I'll tell u about wood dust I was a Sawyer in a lumber mill. You can smell the wood and determine what you were cutting by the dust. Best was cherry, birch, hemlock, walnut etc... and I got to saw up a Mahogany log that was quarterd and was still 6 ft wide 5ft thick and 16ft long...was so big I had to cut a notch in it to fit through the top saw... AH memories of blowing out green and black boggers!!! lol
Russ