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LOGGING 



straight track daily. Curves require about one-third more labor 

 than straight track. In Idaho the cost of the construction of 

 9 miles of pole road on rolling ground was $500 per mile, while 

 on the Pacific Coast the cost has run as high as $1000 per mile. 



The maintenance of a pole road is low. The chief item aside 

 from the occasional replacement of a pole, consists in removing 

 splinters from the rails, usually with a spade, and also greasing 



Photograph by H. R. McMillan. 

 Fig. 73. — The Type of Car used on a Pole Road in Idaho. 



the rails with skid grease. One man can care for two miles of 

 track on half time. 



The cars are built with a heavy framework of sawed timbers 

 mounted on four wheels, each of which is about 42 inches in 

 diameter with a slightly concave face, a 4-inch flange on the inner 

 side and a 2-inch flange on the outer. Each wheel turns on a 

 2-inch fixed axle provided with a side pla}' of 6 inches so that the 

 wheels can adjust themselves to the inequalities of the rail and 

 the uneven gauge. 



