WOOD 



109 



and stretched across the stream (Fig. no). From the 

 cutting of the tree until the mill is reached, the cylindrical 

 shape of the log and the force of gravity are utilized to the 



After Minnesota Forest Service 



Fig. no. Sawmill and floating logs held by boom 



greatest advantage to keep it moving by selection of a 

 route of travel that is downhill. Skidways are located at 

 the foot of the slope, the foundation being at least as high 

 as the top of the sled so that the logs can be rolled onto the 

 load with the minimum effort. The roads chosen are slightly 

 down grade or on the level. In mountainous regions logs 



