THE AUTHOR 



PAUL L. SCHILLINGS is a research engineer head- 

 quartered in Bozeman, Montana, at the Station's 

 Forestry Sciences Laboratory, maintained in co- 

 operation with Montana State University . During 

 the past 4 years he has been engaged in systems 

 studies of logging operations in the Northern 

 Rocky Mountain area. This report is an out- 

 growth of a related study, the results of which 

 are reported by the author in Research Paper 

 INT-59 titled "Selecting Crawler Skidders by 

 Comparing Relative Operating Costs." 



