PRODUCT RECOVERY 



Up to this point material utilized has been considered as a volume of usable wood. 

 The following section considers the kinds of products that can be derived from this 

 volume and type of wood. 



Utilization Standards 



This experimental sale originally specified utilization to a 2 1/2-inch minimum top 

 diameter for green material. The specification was later changed to "logger's choice," 

 which meant that the purchaser had the option of taking or leaving any of the dead mate- 

 rial on the sale. For green material, whole-tree lengths were utilized up to the legal 

 hauling length limit of 50 feet, with no minimum diameter. Dead trees had to be free 

 of rot. Consequently, material that was on the ground prior to the falling operation 

 was not removed. 



The minimum piece length skidded was long enough to contain 2 or more products- -2 

 houselogs, or 1 houselog and 1 studlog, etc. The primary length constraint was legal 

 hauling length. Another consideration was the amount of rot in dead material. 



Product specifications were as follows: 



Froduot 





Min. small-end 

 d-tameter 



Min. 



length 







(Inahes) 



.(Feet) 



Sawlog 





12 



8 



Studlog 





6 



8 



Houselog 





8 



12 



Fencepost 



1 



6 



7 





2 



5 



6 





3 



, 4 



6 





4 



3 



6 





5 



2 



5 



Product recovery, in number of pieces and cubic volumes, is shown in table 5. 

 Recovery is computerized, based on the length and diameters of the material loaded from 

 each unit. Recovery is optimum because material is allocated to its most valuable 

 end use. A sample estimate of the products at the plant site showed that the 

 actual multiproduct recovery was as good as the programed recovery because of close 

 tolerances in cutting out the products. For instance, some houselogs were actually a 

 scant 8 inches in diameter and some 7-foot posts were 5 3/4 inches in diameter. It was 

 not possible to get an accurate yard tally because products were mixed in the yard. 



Recovery of larger, more valuable material was quite high--31 percent of total re- 

 covered volume--for the tree sizes involved. On the other hand, the large proportion 

 of posts represents product recovery beyond what might be expected by a single product 

 studlog operation. This table shows that the so-called unusable tops do have some use. 



10 



