construction of dipping tank (draw to scale) ; 

 formula for dipping solution; preparation of 

 solution ; length of time lumber is immersed ; 

 amount of chemical solution required to dip 1000 

 board feet; subsequent treatment of lumber; 

 origin and cost of chemicals ; crew ; cost per 

 1000 board feet. 



b. Yards: area; distance from mill and other 

 buildings ; arrangement and construction of 

 "dolly ways" ; width and condition of alley ways ; 

 equipment for, and method of transporting lumber 

 from the assorting table to yard and yard to 

 planer, or car; character of lumber dried in 

 yard; advantages and disadvantages of yard 

 drying ; piles, arrangement, dimensions, founda- 

 tions, roof, location with reference to prevailing 

 winds, average contents ; crews and work per- 

 formed daily ; weight of lumber before and after 

 drying ; total crew on yard work ; cost of yard 

 work per 1000 board feet. 



c. Dry kilns : type ; capacity ; average tempera- 

 ture and humidity maintained at each end in 

 progressive kiln ; kind, size, and amount of heat- 

 ing pipe and its location in kiln ; source of heat 

 and steam pressure; disposal of water of con- 

 densation ; time required to dry lumber of differ- 

 ent species and thickness; special problems 

 involved in kiln drying; kiln trucks, character 

 and capacity, method of piling lumber on, auto- 

 matic stackers; other kiln equipment; handling 

 lumber at receiving and discharging end; per 

 cent of total cut and the grades kiln dried; 

 weight of lumber before and after drying; crew, 

 wages, and duties ; labor saving devices used in 

 handling kiln truck loads; cost per 1000 board 

 feet. 



d. Dry sheds: construction and capacity (show 

 important features of construction in a sketch 



