Periodical Literature. 



145 



Board feet Am't yarded 

 per log per day 



Cost per Board feet 



2,000 

 1,750 

 1,500 

 1,250 



90,000 

 78,750 

 67,500 

 62,500 



thousand 



$0.40 



• 45 

 •53 



• 59 



per log 



1,000 

 750 

 500 

 250 



Am't yarded 

 per day 



55,000 

 41,250 

 32,500 

 22,500 



Cost per 

 thousand 



$0.65 



• 87 



1. 12 



1.60 



This table makes allowances for time lost in moving yarders 

 from one location to another and the cost is based on a crew con- 

 taining one driver, one fireman, one-half wood biicker, one 

 chaser, one hook tender, two rigging slingers, one swamper and 

 sniper which costs $26 per day to which should be added $10 for 

 upkeep of machinery, blocks, rigging, lines, etc. In this table 

 it is assumed that the trip or haulback line is run 425 feet a min- 

 ute, the main line 225 feet a minute, but, if the machine is work- 

 ing at 450 feet, the actual length of time that the machine is 

 really hauling logs is about two and one-half hours, which with 

 the necessary short starts to straighten logs in the woods makes 

 five hours. Four hours is allowed for placing chokers, unfasten- 

 ing logs by chaser, pulling windfalls and changing the head block 

 on the trip line. One hour per day is allowed for an accumula- 

 tion of time in which to move the donkey engine which usually 

 averages about 800 feet in seven hours. 



Two-and three-log pole roads should not cost more than 2'j^ 

 cents per foot and need no care after construction if properly 

 built. Running chutes are estimated to cost 55 cents per foot for 

 large fir timber. A road engine has an average length of haul 

 of 3,000 feet and it is advisable to have the machine large enough 

 to care for the output of two yarders. If the distance exceeds 

 this a swing donkey is recommended. The crew usually consists 

 of an engineer, fireman, wood bucker, chaser and a grab man. 

 The average cost of labor and deterioration is about $32.50 per 

 day. 



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