Been off the webs for the most part of late, so late to the game on Pete's nice vid find on skyline logging. I know a few things about what's going on there, and can offer an answer or two that came up pages ago.
The twigs are set in between guy cables and their holding staples, to keep from overly pinching any of the cable wires to point of damage when they're driven into the anchor tree/stump. Never in a clamp, that I've seen, nor saw in this vid, as some here posted??
These huge staples are "fairly" new to the scene, back in my day the de riguer item for that task was railroad tie spikes, heads set in opposition to each other on either side of the cable, for securing a guy cable location on an anchor.
The hammering of cable clamps you saw was to move the clamp farther down the loop towards the anchor tree/stump, to get a tighter bite on the anchor. It's not possible to manually close the two legs of cable under some tension to get the clamp set, so you have to do so too far away from the anchor to get as tight a loop as you want...hence, start with the clamp set farther away, the once it's all put together, hammer it down the two legs of the cable towards the anchor until the loop is small enough to hold well, then finish tightening the clamp bolts.
Great vid Pete, thank you for the find. Brought back many a memory, not all sunshine and puppies either
. Hella tough job, risky work environment.