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Paper wrap (PW)     Heavy paper, wrapped around the top and four sides of a unit of lumbr, to protect it during transit and outside storage. Often a condition of sale.     Back to top       Petrograd Standard     Measurement unit for softwood lumber volume equal to 165 cubic feet, 1,980 board feet, or 4,672 cubic meters. Back to top         Phytosanitary Certificate     A certificate issued by the USDA to satisfy import regulations of foreign countries indicating that the shipment has been inspected and is free from harmful pests and plant diseases.     Back to top       Planer     A piece of sawmill equipment that planes rough lumber, leaving it smooth and uniform in size.     Back to top       Planer mill     Although sometimes a separate facility, the planer mill is usually that part of a sawmill where lumber is planed, graded, and sorted. Back to top     Plywood     Sheets of wood consisting of three or more sheets of wood glued and bonded by heat and pressure with the grain of each sheet running perpendicular to adjacent layers. Back to top     Precision end trimmed (PET)     Lumber trimmed smooth on both ends and varying no more than 1/16" in nor more than 20% of the pieces. May be a condition of sale. Back to top     Primary Wood Products     Include logs, softwood lumber, hardwood lumber, plywood, oriented strand board (OSB), medium-density fiberboard (MDF) and particle board. Back to top     Procurement forester     A forester employed by and accountable to a sawmill or paper mill and who is responsible for providing a continuous supply of logs for his/her employer. Also referred to as industrial foresters, they purchase trees on the stump or at the landing from landowners or loggers. Back to top     Pruning     Pruning of lower dead branches leads to an almost immediate improvement in the quality of wood produced. After several years new wood will cover the severed branch stubs and the subsequently produced wood will be knot-free. This treatment has no effect upon tree growth. Pruning can significantly improve the quality of saw and veneer logs. For maximum effectiveness pruning should be concentrated on lower portions of larger trees which will not be harvested for some 30 to 40 years following treatment. Heavy pruning which removes a substantial portion (i.e., more than one-third) of the green crown should be avoided. Back to top     Pulp Logs     Logs of lesser value (smaller in diameter with acceptable defects) than sawlogs, of greater value than cordwood. Pulp logs are usually bought by the ton to be debarked, reduced to chips, and used to manufacture pulp and paper. Back to top     For Further Information Please contact our knowledgable staff