Here's a good one in hickory. I know exactly how and why this one happened.
We set a rope high up to pull the tree over. I did the face cut, began the back cut, but as soon as the tippy tips started to move, I stopped the cut.
Me and the little guy went wayyyy back to the end of the rope, about 2-1/2 tree lengths. I set a 2:1 Z-rig with a cammed pully, so the advantages were definitely on our side. The tree even had a slight lean the direction we wanted it to go. I could have just chop n' dropped the tree, but the goal was to have Jr. involved in pulling the tree over, and be part of the rigging scenario.
We would pull, watch the tips move, stop, get all excited. Ready ourselves, do another pull, stop, get even more excited. We were geeky and he was just having such a large time in his grippy gloves and hearing protection, all manly-man, pulling over an entire tree.
The nice thing about the one-way cammed pulley (Petzl ProTraxion) is when you pull, and stop, the new position is locked in and held.
We got ready for the third pull and POW!, like a rifle shot, it barberchaired, but of course fell right where we wanted it to go.
What we did was replicate the conditions as if it were a leaner with a heavy top. If it WERE a leaner with a heavy top and the cutter had been standing directly behind, he'd have been drop-kicked into the next county.
Imagine if this were up in the air, you're fliplined into a leaning top and you're thinking, "Ahh, no-brainer. Cut here, it falls there." But you're tied into it and as you sink your chainsaw into the back cut, you hear that rifle crack and in a fraction of a second the top barbers, catching you in the gut. It hinges up, digging in deep under your sternum, through to your spine. In the next fraction of that same second you notice that in the mayhem your chainsaw has severed your right leg, but it concerns you not because your flipline has your lower body (minus a leg) held captive, so your upper torso is ripped from your lower half and catapulted into the neighbor's pool. Amidst this (we're now into 2nd second) your intestines have unfurled and although it is entirely debatable
where your intestines will snap, or whether they
will at all and leave your head and torso hanging far beneath your lower torso, as stated earlier, you were flung with such force as to effect a swan dive into the crystal blue water. Let's call this a 'half swan'.
So you bloodied up the neighbor's pool. You got guts hanging down through the lower limbs of the tree, you're still (partially) aloft, your stupid azz is still fliplined in and saw still running at idle. Most definitely the worst 5 seconds of your life, but your concerns are already on to other things because YOU'RE DEAD.
If you are
inwardly focussed, you new concern might be, "Wow, pearly gates. Cool! I wonder if the beer is actually better in Heaven?" If you're an
outwardly focussed person, you might think, "Bummer, someone's gotta clean up that mess AND one of my buddys has gotta finish the treejob."
Alway's be watching for the possibility of a barberchair. Hope I've clarified
why.