Table 13.— Materials balance by logging unit on a per-acre basis 



Unit 



Item I II III IV 







Percent 





Percent 



Ft' 



Percent 



Ft' 





Prelogged stand 



3,378 



1 uu.u 



T 070 



1 uu.u 



77Q 



1 UU.U 



oJvo 



lUO.O 



Logged volume 



2,540 



75.2 



2,519 



77.0 



1,668 



fin n 





71 ^ 



Residues' 



166.7 



4.9 



368.8 



11.3 



125.4 



4.5 



350.5 





Residual stand 



671.7 



19.9 



384.2 



11.7 



985.2 



35.5 



702.6 



19 



Logged material primary products 

















Ctiips 



















(acceptable) 



242 



9.5 



190 



7.5 











(unacceptable) 



133 



5.2 



294 



11.7 











Posts 



101 



4.0 



118 



4.7 











Saw logs 



2,064 



81.3 



1,917 



76.1 











Total 



2,540 



100.0 



2,519 



inn n 



1 \J\J .\j 













(71.9 m^) 





(71.4 m^) 













Saw log recovery^ 



secondary products 



















Group 















1 





2 













Lumber 



1,043 



55.9 



1,439 



63.0 











Railroad ties 



328 



17.6 



162 



7.1 











Chips 



472 



25.3 



653 



28.6 











Residues 



22 



1.2 



30 



1.3 











Total 



1,865 



100.0 



2,284 



100.0 













(52.8 m^) 





(64.7 m^) 













'Does not include prelogging residues, which are negligible. 



^Based on sample sawmill recovery study, units I and II = group 1 and units II and IV = group 2. 



Table 14.— Comparison of tree to deck logging systems for the four study units 



Unit 





1 



II 



III 



IV 



Felling 











Trees per hour 



88 



-38 



69 



40 



Cost per hour 



21.80 



20.79 



21.80 



20.79 



Cost per tree 



.25 



.55 



.32 



.52 



Limb and buck 











Trees per hour 



46.0 



55.7 



30.4 



46.3 



Cost per hour 



15.47 



15.47 



15.47 



20.79 



Cost per tree 



.34 



.28 



.51 



.45 



Skid 











Trees per hour 



31.8 



20.3 



21.9 



20.4 



Cost per hour 



16.90 



24.82 



16.90 



24.82 



Cost per piece 



.53 



1.22 



.77 



1.22 



Landing 











Pieces per hour 



34.7 



95.2 



23.8 





Cost per hour 



15.47 



15.47 



24.38 





Cost per piece 



.45 



.16 



1.02 





Post-making 











Posts per hour 



68 



71 







Cost per hour 



15.47 



15.47 







Cost per post 



.23 



.22 







Total Cost Per Piece 



1.57 



2.21 



2.62 



2.19 



Hours 



69.64 



76.55 



78.55 



66.40 



M bd.ft. 



36.50 



62.83 



59.83 



54.17 



Acres 



183.18 



398.63 



472.50 



394.96 



Hectares 



517.53 



. 728.50 



863.66 



721.91 



Cunits 



8.66 



12.19 



14.45 



12.08 



Meters' 



11.11 



15.64 



18.54 



15.50 



'M bd.ft. = 2.36 m'. Chipping costs for units 1 and II are not included. 



10 



