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    Description

    A study was conducted on the productivity and cost of an integrated harvesting and processing system operating in small-diameter timber (western hemlock-type) on the Olympic Peninsula of western Washington. The system uses a new steep-slope fellerbuncher, a clam-bunk grapple-skidder (forwarder), a prototype chain-flail debarker delimber, a chipper, a conveyor system, and a prototype shredder. The study showed that the system harvested and processed trees at a combined-system cost of $7.80 per green ton at a production rate of 455 green tons per day. The delivered product mix was 53 percent chips, 21 percent saw logs, and 26 percent hogged fuel by weight. The productivity and machine rate of each piece of harvesting and processing equipment and other data are given.

    Publication Notes

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    Citation

    Lambert, Michael B; Howard, James O. 1990. Cost and productivity of new technology for harvesting and in-woods processing small-diameter trees. Res. Pap. PNW-RP-430. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 44 p

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    Keywords

    logging, whole-tree harvesting, feller-buncher, intensive harvesting, utilization, integrated harvesting, in-woods chipping, small-tree harvesting

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https://www.fs.usda.gov/treesearch/pubs/25638