Found all this in one round with the splitter. It was a church yard tree. Strap and ring used to tie horses too. It was about 8-10" deep in this big red oak round.
For a few years I was getting wood from a Cleveland tree service. It was a bit of a drive but didn't have to do much other than strap and chain bind the load. I'm guessing most people tried to save their trees for years prior to having them removed 'cause there was A LOT of metal in city trees. Cable, lag bolts, eye bolts chains and angle iron are what come to mind. Hit a few pieces before I decided to burn a bunch of crotches and stuff with suspected metal. After that, I'll take an insulator or tap anytime.
Being a person who collects most of my firewood from urban locations, this is what runs through my mind every time I cut and I've had my share hitting quite a few of these objects. Its not a matter of if, but when and I think I suffer from PTSD over it. It was worse in the late 80's when I was chainsaw milling because you never miss when milling and you often didn't realize you cut through lag bolt till your saw chain was reduced to a wood polisher. Those were special rip chains to boot which you had to special order. Has anyone here ever tried to polish their way through a cut? Not fun, especially in the field without an extra replacement rip chain.
My local saw shop has a display case that had a piece of wood with an insulator in it. I gave it to them to display with it.
I had a big pile of tops that I put together and burned. When the ashes where cool I was raking them out and found 2 hunks of Barbed wire each about 2 ft long or so. It baffles me cause all the brush came from tree tops on large trees. Don't have a clue how the Barbed wire got up in a tree top.