Notes
Outline
Productivity Improvements Through Professional Training in Appalachian Cable Logging Operations
Hylton Haynes & Rien Visser
Graduate Student and Assistant Professor, Virginia Tech
Appalachian Area
Forest Stands
Non-uniform stands:
many low value ‘pulp’ trees
few large high value trees
‘Crescent Wrench’ Mountain Logging
Mountain logging crews:
1 bulldozer, 1 cable skidder, 1 loader and 1 truck
‘Family’ logging crews, little formal training
Changes being forced by environmental regulations and improving efficiency
Worker Issues
Poorer area of the eastern USA
Different work ethic, ‘work to
live’ attitude
Hard work in Hardwoods
Aging workforce
 
– few young people interested, very little training
Example: contractor with 8 workers employed 30 people in one year to keep his operation going
Timber Resource by Slope Class
455 million tons of saw timber on land (> than 5 MBF/ac).
slope >40% @ 50% availability, 100 year rotation, 15 000 tons/year
Two Cable Yarder Research Projects
Goal: promote cable logging as a viable harvesting system:
FS ‘Stewardship’ project
third party harvesting system evaluation
‘transparency’ of timber sales, environmental improvements
Operator Training ‘learn-curve’
professional training from PNW
establish productivity improvement
Forest Service Stewardship Project
New project: skidder extraction, swing landing, cable yarder, excavator with grapple saw
Forest Service Stewardship Project (cont)
New project: maximize value recovery, ‘roadside’ auction of sawlog, stream habitat improvement
Learn-Curve Effect
‘Self taught’ learn-curve effect
Study Methodology
Pre- and post training:
Productivity Study
elemental time study (cycle times, turn vol.)
On-site System Evaluation
observations – operations, safety, environmental
Data Analyses
Wes Hood Logging
Thunderbird TY 45 yarder - July 2001
Skidder and trailer mounted loader
‘Professional’ Training
Crew had operated yarder ~ 1 month
Two experienced PNW cable yarder operators / riggers
Each ~ 5 days on-site crew training
Data Analyses
Complicated for pre-training data set!
Low correlation between productivity and production variables:
i.e. ‘carriage out’  vs  distance  (r2=0.19 up to 0.69)
Carriage out (min) =
0.96 + 0.0023 x Distance
– 0.52 x Train
Predicted vs Actual Production
Productivity Increase
System Evaluation Results
Improve safety
working under skyline, poor felling
Landing layout - loader location
Trailer mounted loader: system halts when loading out truck
Cost - Benefit Analyses
Professional training ~ $500 to 700 / trainer / day
1 week, two PNW trainers ~ $8000
Resulted in ‘1 extra truckload’ / day
Payback in just 4 weeks !
Conclusions
Professional training pays
Quick return on ‘investment’
increase productivity
increase safety and environmental performance
Still need to work on management system
many ‘social / cultural’ issues to overcome!
Acknowledgements
Wes Hood Logging
Mullican Lumber
Hank Sloan, Forest Service
Karl Stampfer,  Vienna