88 



A MILL SCALE STUDY OF WESTERN YELLOW PINE. 



1100 

 1OOO 

 900 

 BOO 

 7OO 

 600 

 500 

 4OO 

 300 

 ,2OO 



too 



18 20 22 24 26 28 30 32 34 36 38 4O 42 

 DIAMETER BREASmifiH INCHES 



FIG. 97. Total volume in board feet actually "sawed out" at mill. 



