I am thinking of milling a log that was dropped 8 months ago and sitting on the ground. It's black walnut and decent size, but I'm wondering if it's been down too long. It's 30' long and 28"-22" in diameter. Any thoughts on the quality of slabs/lumber I can get out of it? I tried to find some answers in this forum, but was unsuccessful. Btw I am in Michigan so it was snow covered all winter. Not much sun here either.