U.S. Forest Service research paper RM.
Rocky Mountain Forest and Range Experimemt Station, Forest Service, U.S. Dept. of Agriculture, 1963 - Nature
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16-foot logs annual sawtimber cut associated species average Barger Board thickness Coefficients of determination Colorado State University computed currently being recovered determine lumber grades developed for associated dimension dry surfaced lumber Durango effective for logs Engelmann spruce accounts Engelmann spruce sawtimber feasibility of grading Forest and Range Forest Service grade 3 logs grade and log grade and volume grading Engelmann spruce grading saw logs Green grade IBM 650 program illus individual log value larger diameters log diameter class LOG DIAMETER INCHES log grades developed log scaling diameter logs were graded lumber grade recovery lumber produced lumber sample LUMBER VOLUME RECOVERY lumber was recovered mill log number modification of trial overrun Pacific Northwest Paper RM-1 quality separation Range Expt recovery and log recovery from Engelmann regression analysis Rocky Mountain Forest Sap rot spruce in Colorado surfaced lumber recovery Table trial log grades U. S. Forest Serv volume loss volume-loss factors volumes currently