THE AUTHORS 



MICHAEL R. CARTER is Assistant to the President, Manufacturing, 

 Northwest Hardwoods, Inc., Portland, Oregon. He was employed 

 as a graduate assistant in Industrial Engineering at Montana 

 State University when the research described in this paper was 

 done. 



RULON B. GARDNER is Engineer in Charge, Forest Engineering 

 Research, Intermountain Forest and Range Elxperiment Station, 

 Forestry Sciences Laboratory, Bozeman, Montana^ He has 

 been involved with logging and forest road construction for the 

 Forest Sei^ce in various capacities for 18 years — the past 

 10 years in a research capacity. 



DAVID B. BROWN is Assistant Professor, Industrial Engineering, 

 at Auburn University in Auburn, Alabama. He was also em- 

 ployed as a graduate assistant in Industrial Engineering at Mon- 

 tana State University. Part of the results of Brown's study of 

 logging systems are used in Carter's model. 



