I went to my town's compost site last night to grab some wood for a camp fire. I grabbed some of this stuff too. Looks like the cut an entire tree down, there is quite a bit. The main stumps look to be as much as 24" in diameter. I'm thinking it is maple, and wouldn't mind using it for the smoker, but don't want to if it is something that is unsafe to burn? Can anybody help me out?