28 



D. Sawing: plain and quarter sawing; manner in 

 which logs of different sizes and possessing various 

 defects (rot, crooks, knots, etc.) are sawed; dimen- 

 sions of rough green, 4/4, 6/4, 8/4 and other standard 

 sizes, when they leave the saw. Thickness of flitches 

 or planks to be sawed on the resaw. Show diagram- 

 matically the manner in which logs of various sizes 

 are sawed. Method of sawing rough, smooth, and 

 defective logs, also those with sweep. Influence of 

 visible defects on the sawing contents of logs both 

 as to volume and grade as compared to sound, straight 

 logs of the same length and diameter. Character of 

 material reworked on the gang or resaw. Are logs 

 sawed parallel to surface or to axis? Policy with 

 reference to sawing butt-end or small end first. 

 Policy with reference to slabbing. Are slabs 

 resawed? Determine by time studies the per cent of 

 total elapsed time that the sawyer spends on operating 

 log-stop-and-loader, steam nigger, gigging back the 

 carriage, and running the saw in the cut. (Instructor 

 will supply a special outline and detailed instructions.) 



E. Logs : number sawed daily ; grades produced ; per 

 cent of each lumber grade in average daily run of 

 mill ; log rule used on the deck ; per cent of "over- 

 run" ; class of logs that yield the higher and highest 

 grades of lumber. 



F. Lumber : kinds of lumber products manufactured ; 

 method of manufacture (in detail) from pond to 

 car ; grading rules used ; grading methods and crew ; 

 grades which are air-dried and kiln-dried ; shrinkage 

 in seasoning; loss in weight during seasoning; ship- 

 ping weights of lumber. Per cent of different thick- 

 nesses cut. Tallying output of mill. 



G. Conditioning Lumber: 



1. Objects. 



2. Methods. 



a. "Dipping": objects; stain, cause of, kind of 

 wood and species attacked, season of attack; 



