THE AUTHORS 



MICHAEL J. GONSIOR is a Research Engineer, Forest Engineerit^ 

 Research, stationed at the Forestry Sciences Laboratory in 

 Missoula, Montana. He has 8 years' experience with forest 

 roads and logging in a research capacity. 



WILLIAM S. HARTSOG is a Research Engineer, Forest Engineering 

 Research, stationed at the Forestry Sciences Laboratory in 

 Bozeman, Montana. He has been involved with logging and 

 forest roads on various assignments for 6 years. 



G LEN L. MARTIN is Professor and Head of the Department of Civil 

 Engineering and Engineering Mechanics, Montana State Uni- 

 versity. He has worked for 15 years as a consultant, teacher, 

 and researcher in the field of Soil Mechanics and Slope Stabil- 

 ity Analysis. 



