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Filtering by: Academic Affiliation Forest Engineering Date issued sim 1978-06-09

Production rates of skyline, balloon, and helicopter yarding systems from gross time study analysis

Creator:

Curtis, Richard James

Abstract:

This paper describes the analysis of data from a three-year gross time study of skyline, balloon, and helicopter yarding systems operating in Western Oregon. Data collection activities were designed and supervised by the Pacific Northwest Forest and Range Experiment Station, U.S.D.A. Forest Service. The specific logging systems studied were running...

Resource Type:

Masters Thesis
Infiltration capacities and surface erodibility associated with forest harvesting activities in the Oregon Cascades

Creator:

Johnson, Michael G.

Abstract:

An infiltration capacity and surface erodibility study was conducted six years after forest harvesting in the Oregon Cascades. A portable rainfall simulator was utilized to obtain field measurements on the Coyote Creek and Hi-15 Watersheds during summer and fall, 1977. Seasonal variations were found to occur in infiltration capacities and...

Resource Type:

Masters Thesis