Yep.
Far as I know, we are the only crew in the country.
Comes from me learning about them in California.
Today, I can't imagine logging without caulks.
Beech logs are slippery like a soaped pig, when wet.
I use them as a rite of passage for the apprentices.
When they get good at falling, they get a pair of caulk boots.
With shipping they cost $580.
Those Haix protectors last a long time, though, if you don't stick a saw in them.
I'm on the 4th season of logging with my current pair.
One of my guys told me, that with the increased production from standing firm, he figured they paid for themselves in a season.
Not far off, methinks.