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Uphill falling of old-growth Douglas-fir.Author(s): Douglas L. Hunt; John W. Henley
Source: Gen. Tech. Rep. PNW-GTR-122. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 18 p.
Publication Series: General Technical Report (GTR)
Station: Pacific Northwest Research Station
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DescriptionFive timber sales were made in old-growth Douglas-fir with matched cutting units. On one unit of each sale uphill falling by either hydraulic jacks or tree-pulling machine was required; on the other unit free falling was required. Logging equipment and methods were the same in each unit. Uphill falling produced a larger volume of timber at less cost than free falling because breakage was less.
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CitationHunt, Douglas L.; Henley, John W. 1981. Uphill falling of old-growth Douglas-fir. Gen. Tech. Rep. PNW-GTR-122. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 18 p.
KeywordsFelling operations, old-growth stands, Douglas-fir, Pseudotsuga menziesii
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