DCHP-1 Online
high-lead system Lumbering 
any method of high-line logging; specifically and originally, a system using only one spar tree.
See also: high-lead yarding high-line logging
- 1930 Slackline gasoline yarders are also being used to advantage as the extra drum of skyline permits the yarding distance to be extended and logs brought in across canyons . . . more efficiently than by high lead methods.
- 1939 The High-Lead is the most common method of yarding by steam. It is a modification of the old ground method and has a radius of operation from 500 to 800 feet (maximum 1400 feet).
- 1942 high-lead--system of logging using spar-tree.
- 1966 The "high lead" system of logging and the "McLean loading boom" combined with an enlarged market to revolutionize the industry.
- 1930 Slackline gasoline yarders are also being used to advantage as the extra drum of skyline permits the yarding distance to be extended and logs brought in across canyons . . . more efficiently than by high lead methods.