Smoking the salt today while I'm at work. I'll see how 10 hours does (need enough time to let the smoker cool so I can cover it and put it away before I go home).
Since salt is corrosive, and I'll be smoking it for several hours, I put parchment paper over my cookie sheet.
Put a large amount of mesquite pellets in the smoker, then will finish it off with a blend (Pit Boss competition blend, got 40 lb bags cheap last summer).
The first three hours, I spritzing just a little bit of water mist from a sprayer over the salt. The water should help make the smoke "stick". Don't want to over spray or you melt the salt.
Stirring every hour.
After the first hour, the top layer already has a nice light brown look to it. Looks like it's going to work really well!