| http://www.w3.org/ns/prov#value | - Cellulose tissue in the wood is also softened and thencompressed so that its volume is constricted up to more than 70% of its original volume without destroying the lumber tissue, thereby producing high strength lumber.SUMMARY OF THE INVENTIONAlthough various kind of wood may be used for lumber, the present invention is a method for manufacturing high strength lumber especially using pine, which i
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