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A choker setter or choke setter is a logger who attaches cables to logs for retrieval by skidders or skylines. [ 1 ] [ 2 ] The work process involves the choker setter wrapping a special cable end (choker) around a log and then moving clear so the yarding engineer (e.g. skidder operator) can pull the log to a central area.
A swing yarder is a mobile piece of heavy duty forestry equipment used for pulling logs from the woods to a logging road with cables. The swing yarder is also known as a grapple yarder. In any logging operation, it is necessary to transport the harvested tree from the stump to a landing for transport to market (usually on a truck). If the ...
Wirkkala invented and developed the high lead method of logging.This skyline (or "spar") method, ideally suited for steep terrain, revolutionized the industry. He also invented important pieces of that industry's machinery used during the first half of the 20th century, including the ubiquitous choker hook.
The whistle operator was known as a whistle punk, [16] [17] who was placed between the men attaching the cables (choker setters), [18] and the donkey puncher, so that he could see the choker setters. [16] [19] When the cables were attached, a series of whistle blows signaled the donkey to begin pulling and the choker setters to stay out of harm ...
A skyline yarder can pull in 5 to 10 logs at a time, using separate chokers. The pulleys are mounted on towers or cranes, other trees, ridges, or, in rare cases, helium balloons. Satellite photograph of industrial-scale skyline logging in the Tierras Bajas project in eastern Bolivia, showing deforestation and its later associated replacement by ...
A yarder is piece of logging equipment that uses a system of cables to pull or fly logs from the stump to a collection point. [1] It generally consists of an engine, drums, and spar, but has a range of configurations and variations, such as the swing yarder. Clyde Skidder at Marathon Logging Camp near Newton, MS ~1921 Madill 124 Yarder. An ...