Is there an interest in sawmill in this forum? I operate a portable band saw mill (Norwood) and mill a lot lot of logs from urban trees. It is a good deal for everyone, since the tree care company just leaves the big stuff on the ground and I come pick it up (I'm in southwest MO, by the way). Here's a photo of a walnut I picked up a while ago. Full of wire, but I got some great lumber out of it!