Cut apart- these are very solid and straight grained, but there's about an inch that is punky, most places. Bark was starting to fall off in places. Some kind of borers may have killed this tree, but so far no evidence of them anywhere deeper than an inch or so. This stuff splits like a dream. "Red Oak- the anti-Elm" Oh- turns out the tree was 26in DBH. They hit the White Oak when the main trunk section came down. I sprayed it with asphalt-based tree wound compound where the bark got knocked off. Hope I did the right thing. I want to discourage any bugs from attacking that tree.