NORTH BEND SKYLINE LOGGING SYSTEMS

Abstract approved: Dr. Julian Sessions The North Bend skyline system was first introduced into the Pacific Northwest in 1912 by the North Bend Lumber Company, North Bend, Washington. The system was able to raise the front end of logs over obstacles while yarding large payloads uphill. Yarding efficiency was improved since hangups were minimized. The Modified North Bend System was developed at the same time, and was used to yard timber downhill. The South Bend System was introduced as a second variation of the North Bend System. The three systems are currently used throughout the world to yard or swing timber over broken terrain where access is limited. The minimum system uses a two drum yarder, for the main and haulback lines, and a standin