Relative softwood sawmill conversion efficiency by region of the United States

Accurate assessment of future trends in the supply of forest products depends, in part, on knowledge of regional softwood sawmill conversion efficiency. Data from 650 sawmill studies carried out in the years 1973 through 1983 were analyzed to obtain estimates of regional conversion efficiency. Statistical tests, both adjusted and unadjusted for log size, showed that significant regional differences existed. The fact that conversion efficiency adjusted for log size differed among regions indicates that processing technologies, in the form of improved processing methods, fibersaving machinery, and/or improved quality control programs, also differed among some regions.

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