Excerpt from Product Recovery of Ponderosa Pine in Arizona and New Mexico Ponderosa pine (pinus ponderosa Dougl. Ex Laws.) is not only the most important commercial timber species in Arizona and New Mexico but also a resource in transition. The old-growth yellow pine is being supplemented in the timber harvest by increasing volumes of blackjack or bull pine from young-growth stands. Old growth is the premier source of Select grade lumber and stock for millwork, but young-growth trees produce mostly less valuable structural and common grades of lumber. The young growth will not support the moulding and millwork industry that is based on old-growth pine, and the change may result in reduced employment in the forest products industry, even if National Forest harvests are maintained at current levels. Given this changing resource, a main objective of this study was to document current use of mature and young stands, to provide a current appraisal base for National Forest timber sales, and to evaluate alternative methods of scaling and grading logs. Specific objectives in 1981 when the study was run, were to develop recovery infor mation in relation to the scaling methods used, to demonstrate value differences among different grades of logs in relation to how logs and lumber are measured, to document the relation between lumber grades recovered and the grade of logs sawn, and to provide a means of estimating product value. To meet these objectives, it was necessary to develop a working definition of young growth and to determine if the value of products was different between young growth and old growth as defined. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.