Logging Terms  - P -

PASS LINE: A small line threaded through a block at the top of the spar to assist the high climber.

PEELER: Logs used for peeling into thin layers called veneer for the manufacture of plywood.

PERMISSIBLE: (As applied to any device, equipment or appliance)- such device, equipment or appliance has the formal approval of the United States Bureau of Mines, American Standards Association, or National Board of Fire Underwriters.

PLUMB: To gauge or assess the various types of lean in a tree.

PLUMB-BOB: Special tool used to establish the outward lean or slant of a tree in relation to its base. Generally a lead weight attached to piece of string is used.

PORTABLE SPAR OR TOWER: A movable engineered structure designed to be used in a manner similar to which a wood spar tree would be used.

PUSHER OR DRIVER: Use of a tree to drive or pushover another that does not fall although it has been faced and backcut. Such a situation results if a tree hangs-up, sits back or is skybound.

PUSHING: When a tree has been undercut and backcut and will not fall, the faller may as a last resort "push" this tree by falling another into it.

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