240 SELLINGLUMBER 



select Western Yellow Pine depreciated 15.2 per cent in air-dry- 

 ing, representing a loss of $6.19 per thousand. Some tests made 

 at another mill in the same locality where the lumber was care- 

 fully graded and where greater care was taken by the manage- 

 ment in properly piling the lumber, the loss for the same grade 

 of boards was only 2.6 per cent, or $1.13 per thousand. Another 

 study was made in a sugar pine mill in California which showed 

 excessive losses in air-drying. I give below a table showing what 

 was found in this study. You will note that the deterioration of 

 the Nos. 1 and 2 clear sugar pine amounted to $17.90 per thousand. 



Table 2 Causes and Amount of Deterioration in the Yard of No. 

 i and No. 2 Clear Sugar Pine : 



Amount Percentage Percentage 



Ft. of of Loss 



Cause B. M. Pile Deterioration per M. 



No deterioration 1,380 24.5 .0 $ .0 



Check 426 7.5 9.9 1.77 



Check and stain 178 3.1 4.2 .75 



Blue stain 2,917 51.7 68.2 12.21 



Stain and pitch 121 2.1 2.9 .52 



Stain and hookholes. 37 .6 .9 .16 



Stain and flume 115 2.0 2.7 .48 



Pitch 145 2.5 3.5 .63 



Flume damage 208 3.8 4.6 .82 



Hookholes 57 1.0 1.3 .23 



Cross grain 73 1.2 1.8 .33 



Total 5,657 100.0 100.0 $17.90 



Unfortunately "we have not conducted studies of this kind in 

 Investigation the Southen pine region, so I am not able to give you specific 

 Astonish figures from your locality, but I feel that if you would examine 



Southern critically into the deterioration or loss of your lumber caused by 

 facturers!" 1 " i m P r per manufacturing, kiln-drying arid piling, you would be 



astonished at what is now occurring. 



As our third suggestion : I believe the lumber manuf actur- 

 Improved ers should co-operate more closely with the manufacturers of wood 

 Wood- working machinery in the development of machines to reduce the 



Machines cost of handling and manufacturing waste. While in specific in- 

 Needed, stances this co-operation is close, I believe it is not close enough 



and that if the lumber manufacturers worked more closely with 



