. Production rates in commercial thinning of young-growth Douglas- fir. Logging Costs; Douglas fir Thinning. 0 I 1 1 1 1 1 1 1 1 1 1 0 2 4 6 8 10 Number of logs Figure 9.—Unhooking and decking time per turn, by number of logs and type of skidding machine. 8 1 1 1 1 1 1 1 1 1 1 1. 0 I 1 1 1 1 1 I I 1 I I 0 2 4 6 8 10 Number of logs Figure 10.—Unhooking and decking time per turn, by number of logs, showing difference with separate man to release Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and ap

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. Production rates in commercial thinning of young-growth Douglas- fir. Logging Costs; Douglas fir Thinning. 0 I 1 1 1 1 1 1 1 1 1 1 0 2 4 6 8 10 Number of logs Figure 9.—Unhooking and decking time per turn, by number of logs and type of skidding machine. 8 1 1 1 1 1 1 1 1 1 1 1. 0 I 1 1 1 1 1 I I 1 I I 0 2 4 6 8 10 Number of logs Figure 10.—Unhooking and decking time per turn, by number of logs, showing difference with separate man to release Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Adams, Thomas Cooper, 1918-; Pacific Northwest Forest and Range Experiment Station (Portland, Or. ). [Portland, Or. ] : Pacific Northwest Forest and Range Experiment Station, Forest Service, U. S. Dept. of Agriculture

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