Contents 



Page 



INTRODUCTIO^ 1 



FACTORS FOR DETERMINING RESIDUAL INVENTORY 3 



Logging Residues as a Percent of Product Volume 4 



Residue Volumes in Pieces 6 Feet and Longer 7 



Diameter Class Distribution of Trees Harvested 



or Destroyed 7 



STUDY METHODS AND RELIABILITY OF ESTIMATES 10 



Conclusions 12 



APPENDIX 13 



Terminology 13 



Abstract 



Reports results of studies made of timber harvesting operations 

 In wcMliMMi South Diikotii, Wyoming, Uliih, iinil Colorado Lo csliniaLc 

 volumes of logging residues. Shown are: factors that can be applied 

 to product volumes to estimate total removals from inventory; resi- 

 due volumes as percentages of saw log volumes; estimates of cubic- 

 foot and board-foot volumes of logging residues for 1969; estimates 

 of cubic-foot volumes of residues to a 4-inch top in pieces 6 feet and 

 longer; the relative importance of felling and skidding as causes of 

 residues; and the numbers of trees removed from growing stock in- 

 ventories by harvesting. Survey methods and reUabiUty of data are 

 discussed. 



