Jimmy Hoffa . . . Nah, just kidding . . . I haven't found anything of interest while splitting other than grubs and bugs . . . and honestly I would rather only find the bugs and grubs vs. finding nails, spikes, horse shoes, etc. I did cut down a dead cherry tree last year (and I cannot tell a lie) . . . and unfortunately I didn't realize that there was a chickadee nest in the tree. One fledgling managed to hop/fly away, but the other bird had a problem with its neck. I know it may sound a bit stupid, but I felt so bad . . . the good news is that there is a bird refuge a couple towns over and they were able to rehabilitate the chickadee and let him loose a few weeks later.