butt rigging

noun, a system of chain link, swivels and bull hooks used in logging (TT)

“Then the whistlepunk sends the signal down to the engineer. Well when this butt-rigging takes off. It’s going to be from the side of the mountain to nothing when it takes off. It goes 200-300 hundred feet high down to the gin pole. So these big logs, when they’re hooked at one end and when that thing takes off, the big cables, everything comes flying up in the air.”