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| T.L.L | | Technical life length. ... |
| T.S.I. | | Timber stand improvement. ... |
| Tackle | | Combination of blocks and ropes used in cable logging ... |
| Tagline | | Extra length of line at the end of a main ... |
| Tail block | | Block fixed to a stump at the outer edge of ... |
| Tail tree | | Tree to which the far end of the skyline is ... |
| Tail tree | | Tree to which the far end of the skyline is ... |
| Tailhold | | In cable logging, the anchorage at the outer end of ... |
| Tailholt | | In cable logging, the anchorage at the outer end of ... |
| Tandems | | Second axle and set of wheels on the rear of ... |
| Tar heel | | Name given to loggers from any Southeastern State ... |
| Target forest | | Type of forest, in terms of species mixture, size, stocking, ... |
| Technical life length | | Time from when the machine goes into operation until it ... |
| Tension wood | | Wood with distinctive anatomical and physical characteristics, formed typically in ... |
| Tether line | | Line used to restrain a balloon in flight, such as ... |
| Thinning | | Cuttings made in immature stands in order to stimulate the ... |
| Thousand board feet | | Unit of measurement equal to a surface area of 1,000 ... |
| Throat | | See portable chipper terms, infeed throat. ... |
| Throw line | | A light line attached to a weight used to throw ... |
| Tightlining | | Method of high-lead cable yarding in which the haul-back line ... |
| Tilt blade | | Blade that can be tilted in respect to a vertical ... |
| Tilt cab | | Cab on a machine that is hinged on one side ... |
| Timber | | 1.) General term applied to forests and their products
1.) Sawed ... |
| Timber appraisal | | Economic appraisal of the monetary value of a timber stand ... |
| Timber carrier | | A pair of tongs attached to a bar and used ... |
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