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High lead logging is a method of cable logging using a spar, yarder and loader. It was developed by Oscar Wirkkala. It is accomplished with two lines (cables) and two winches (or cable drums). The mainline or yarding line extends out from one winch, while a second usually lighter line called the haulback line extends out from the other winch to ...
High Lead logging in Western Oregon Cable grue Larix 3T, installed on agricultural tractor. Cable logging, also referred to as skyline logging, is a logging method primarily used on the West Coast of North America with yarder, loaders, and grapple yarders, but also in Europe (Austria, Switzerland, Czech Republic, France, Italy).
Spar tree at a logging camp in the United States, 1924. A spar tree is the tree used as the highest anchor point in a high lead cable logging setup. The spar tree is selected based on height, location and especially strength and lack of rot in order to withstand the weight and pressure required.
In a dashcam video captured in Harrisburg, Pennsylvania on Tuesday, one driver experienced a thankfully not deadly, but still frightening ordeal when a load of construction materials fell from a ...
High lead logging – Method of cable logging using a spar, yarder and loader; References ... 3.5 minute video on some basic cable rigging safety;
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Choker setters at work attaching a log to a skyline in Cowlitz County, Washington (October 1941). A choker setter or choke setter is a logger who attaches cables to logs for retrieval by skidders or skylines.
Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...