Through research, high-quality, disease-resistant trees are being developed for the future 



tate good watershed management so vitally important to the manage- 

 ment of national- forest timber and range resources. This will 

 include studies of water yields, both quality and quantity, and 

 management of snowpacks at high elevations and soil stabilization. 



6. Design and evaluation of new and improved equipment for 

 logging without damage to watershed values — as by an overhead 

 cable system in order to extend harvesting operations into steep 

 mountainous slopes not now operable by ground skidding methods ; 

 and equipment to increase the efficiency of woods-utilization of 

 forest products. 



7. Improvement of volume and yield tables, rotation age data, and 

 other information for regulating timber growing-stock levels for 

 use in the national-forest timber-management plans. 



8. Development of silvicultural bases to guide timber harvesting 

 and regeneration practices in new forest types and areas, particu- 



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