Brock,
Sure wish your operation was closer to me! I burn between 4 & 5 cords of slabs to heat my house every year, and believe me they don't give them away.
The sugar houses around here burn a lot of them making Maple syrup in the spring.
Mulch is also very popular with home owners as decorative ground cover around trees and flowers.
Can it be turned into shavings or saw dust for animal bedding?

Good luck.
Karl Hines