We have a huge oak tree in our wooded lot next door that has been dying for the last 2 years. We first noticed that it was getting brownish gray patches up and down the bark from the base to about 15-20 feet up the trunk. We also noticed it wasnt leafing anymore. Im not sure what killed the tree or exactly how long it has been dead, but it was clear after the patches and lack of leaves, that it was dead. Well, it just fell about a month ago in a bad storm we had come through. It broke about 1-1/2 to 2 feet from the ground. Well, i didnt know if it was rotten or what, but as i took the chainsaw and began cutting it up, the internal wood looks really good. The first 20 feet of the trunk is still on the ground and uncut, so i am referring to all the wood above 20 feet that looks good. I have started to split it and rack it for smoking and burning, and i figured i would do some research to see if the wood was safe to smoke meat with. Any advice?? Anything i should look for to clear it for smoking??