DCHP-1 Online
high-line logging Lumbering 
any method of yarding logs by means of one or more spar trees and a cable system.
See also: high-lead system high-lining high-rigging skyline spar tree
- 1965 Mobile spar trees, which are monstrous self-propelled cranes whose thick booms bear a multiplicity of sheaves and cables, are used in modern high-line logging to replace the spar tree used until recently as the focal point for the complicated system of cables and pulley-blocks.
- 1965 Mobile spar trees, which are monstrous self-propelled cranes whose thick booms bear a multiplicity of sheaves and cables, are used in modern high-line logging to replace the spar tree used until recently as the focal point for the complicated system of cables and pulley-blocks.