Artificial channels, known as chutes, in which logs and bolts may be transported down steep slopes by means of gravity, were devised several centuries ago in the mountainous regions of Europe and later were used by north American loggers, especially in New England, New York, and Pennsylvania. They operate most advantageously on grades that are far in excess of those on which wheeled vehicles or sleds can be used safely, and they are most serviceable for moving timber on terrain which is so steep or broken that the construction cost of suitable roads is prohibitive.
Koroleff, Alexander M., and Ralph Clement Bryant. 1932. The Transportation of Wood in Chutes. Yale School of Forestry Bulletin 34. xii, 139 pp. + figures.
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