FOREST SERVICE STUMPAGE APPRAISALS 717 



ing from 6 to 14 thousand per crew, cover from the minimum to the 

 maximum averages. It will be noted that a skidway or landing man 

 has been provided for each crew. This will not apply in all cases, but 

 it is the general practice where the skidding distance is an average of 

 not more than 250 to 300 feet. When the logs are decked, rolled into 

 a chute or flume, or loaded on cars, the skidway man usually does a 

 portion of this work also. When conditions are such that the landing 

 man can take care of two skidding teams, the costs as given in the table 

 should be reduced from 6 to 10 per cent. The need for tables of this 

 character has been realized for some time. 



USE OF TABLES 



The primary requisite necessary for the application of a table of this 

 kind is a sufficient knowledge of logging conditions to be able to deter- 

 mine (i) which crew is required for any given set of conditions, and 

 (2) the amount each crew of average efficiency will handle per day. 



To use these tables accurately a man should have an analytical turn 

 of mind and should have had considerable experience in logging opera- 

 tions or opportunities to observe results obtained under varying condi- 

 tions and covering long periods on different operations. Men without 

 experience could use them with fairly satisfactory results if a clear 

 description were given of the conditions requiring the different crews 

 and the factors determining the daily output. While on the ground 

 one can, without question, best determine the crew required for swamp- 

 ing, skidding, and landing and the output per day. After considering 

 the factors affecting the costs and deciding upon the crew and the 

 amount which should be handled per day, reference to the table gives 

 the cost per thousand directly. 



OFFICE WORK 



After the completion of the field examination the next step is the 

 office compilation of the final report. This generally requires from one 

 to ten days, depending on the size of the chance and whether the over- 

 turn or investment method is used. 



The investment method requires much more time, but it is probably 

 more logical in large sales where the initial investment is heavy and a 

 large amount of operating capital is required. 



COST OF DETAILED APPRAISALS 



The cost per acre for appraising timber varies greatly for different 

 chances. The factors affecting the costs are : Size of chance, accessi- 



