Had a neighbor who had an old Bellsaw mill. He did a nice job with it, too. Don't see a lot of timber over 30 inches here. We had some white pine that aproached to 40 inch mark and some hemlock on the high side of 35 inches when i sawed for my living room a few years back. I had some hard maple and black cherry we sawed for the inside walls and floor. Some of that was pretty decent sized. We sawed a bunch of hemlock and a few red pines this summer for rebuilding part of a barn that caved in. We did have some 30 inch plus stuff but of course the upper logs were down to about 10 inches before we topped em off. We are in the process of thinning out some red pine. Some of that is pretty small. A local Amish mill will take it down to 6 inches because he has a market for it. We do have some of the red pine that will go 24-28 inches though. Once we get this stuff thinned down, I'm going to re-seed to white pine.