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| Blower drive | | Fan shaft on a turbocharger. ... |
| Blue stain | | A bluish or dim-grayish discoloration of the sapwood caused by ... |
| Blue-stain | | Discoloration in the sapwood of pine. At one time this ... |
| Blue-stain fungus | | Most common form of fungal stain occurring in sapwood. Conifers ... |
| Board | | Lumber that is nominally less than two inches thick and ... |
| Board foot (BF)(Boardfoot) | | A unit of measurement of lumber represented by a board ... |
| Bobtail | | Refers to a two-axle truck. ... |
| Bole | | Tree stem that has roughly grown to a substantial thickness, ... |
| Bolt | | 1.) Short piece of pulpwood.
2.) Any short log, as a ... |
| Bone yard | | Storage place for old, used, or worn out equipment or ... |
| Bone-dry ton | | Wood pulp or residue that weigh 2,000 pounds at zero ... |
| Bone-dry unit | | Wood residue that weighs 2,400 pounds at zero percent moisture ... |
| Boom | | 1.) Pole, timber, or metal arm protruding from a machine; ... |
| Boomboat | | Any boat used to push or pull logs, boom, bundles, ... |
| Boring | | Starting a cut in the center of a log using ... |
| Bound moisture | | Moisture which is closely bound to the cell wall constituents ... |
| Bound water | | Water that is bound within the cell wall of wood. ... |
| Bow | | A lumber defect referring to deviation from a straight line ... |
| Brag Load | | An extremely large load or record load of logs on ... |
| Brake pack | | Internal brake on a skidder or machine transmission. ... |
| Branchwood | | Wood portions of a tree excluding the stem and roots. ... |
| Brand | | Log mark used to identify logs. ... |
| Branding ax | | Ax used to stamp brands into logs. ... |
| Break up | | Period of time in the spring when melting snow creates ... |
| British thermal unit | | 1.) Measure of the amount of heat required to raise ... |
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