. Production rates in commercial thinning of young-growth Douglas- fir. Logging Costs; Douglas fir Thinning. 0 I I I I I 1 I I I I l_ 0 100 200 300 400 500 Volume per log (board feet) Figure 20.—Total direct logging cost per thousand board feet, including limbing and buck- ing, skidding (400 feet), loading, and hauling 30 miles, by type of skidding machine. 19. 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 C

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. Production rates in commercial thinning of young-growth Douglas- fir. Logging Costs; Douglas fir Thinning. 0 I I I I I 1 I I I I l_ 0 100 200 300 400 500 Volume per log (board feet) Figure 20.—Total direct logging cost per thousand board feet, including limbing and buck- ing, skidding (400 feet), loading, and hauling 30 miles, by type of skidding machine. 19. 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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