LOGGING IN THE DOUGLAS FIR REGION. 



107 



and downhill. No rock was enconntered. The logs, averaging 1,800 

 feet in volume, were yarded an average maximum distance of 900 

 feet. About one-third of the timber was double hauled. The av- 

 erage scale per engine per yarding day was 70,000 feet. The cost 

 for 1911 included all the wire rope used in camp. It is not possible 

 to state the average maximum distance from the stump to the land- 

 ings. Most of the timber was moved 2,000 feet by logging engines, 

 a considerable amount 4,000 feet and a small amount 7,500 feet. The 

 cost for 1910 includes the same items as the cost for 1911. 



In estimating the cost of wire rope in connection with timber- 

 iippraisal work, two methods may be used. The first is to use the 

 actual cost per thousand feet in a camp where conditions are approxi- 

 mately the same as the case being dealt with. The second is to 

 develop the average cost in a more or less hypothetical way. A third 

 method would be to check the results given by the second against the 

 first. The following tables illustrate the second method in connec- 

 tion with single hauling. 



Table 19. — Estimated cost hy second method. 



CASE 1. 



Kindofline. ' 



Size. 



Length. 



Cost per 

 foot. 



Cost per 

 line. 



Freight. 



Total 

 cost. 



Output. 



Cost per 

 1,000 

 feet. 





Inches. 

 li 



t 



Feet. 

 1,200 

 2,500 

 2,500 



Cents. 



32.50 



8.00 



6.25 



Dollars. 

 390. 00 

 170.00 

 156. 25 



Dollars. 

 7.35 

 3.00 

 3.00 



Dollars. 

 397.35 

 173.00 

 159. 25 



Feet. 

 4,000,000 

 8, 000, 000 

 25,000,000 



Dollars. 

 0.093 



Trip 



0. 0216 



Straw 



0.006 







Total 









716. 25 



13.35 



729. 60 





1206 















CASE 2. 



Main yarding 



11 



1,200 

 2,500 

 2,500 



40.00 

 10.00 

 6.25 



480.00 

 250. .00 

 156. 25 



9.00 

 3.88 

 3.00 



489. 00 

 253. 88 

 159. 25 



4,000,000 

 8,000,000 

 25,000,000 



0.1220 



Trip 



0. 0317 



Straw 



0.006 







Total 









886. 25 



15.88 



902. 13 





0. 1597 















Rigging. — While it is the practice of most operators to include in 

 the wire-rope account all the wire rope used, a few operators keep 

 a rigging account, in which they may include crotch lines used in 

 loading, yarding (not main yarding), and tag lines used in yard- 

 ing, chokers, and straps. 



It is not possible to discuss the cost of rigging per thousand feet 

 except in a general way. largely because operators as a class have 

 paid little attention to keeping records of this expense. 



The maintenance or replacement of chokers is the largest item of 

 expense in a rigging account and varies with conditions the same 

 as the cost of main yarding lines, and for the same reasons. The 



