Productivity and Profitability of Grapple Yarding B.C. Coastal Second Growth TimberMicroform - 1987
As high-quality, old-growth timber becomes more scarce, logging operators are looking at second-growth stands for part of their timber supply. This study examined the profitability of grapple yarding in second-growth timber, and examined the factors which determined the marginal log, the one for which its variable yarding cost is equal to its value at roadside. The study also evaluated the Madill 122 yarding crane on a shift-level basis for 2 months, and at a detailed-timing level for 3 weeks. During the detailed-timing period, individual logs were scaled and graded, and their yarding time recorded. The yarding costs and profits of these logs were calculated using marginal economics analysis techniques. The study block was located approximately 15 km northwest of Sooke, BC, and the stand composition was mainly second-growth Douglas-fir.
Publisher: S.l. : Forest Resource Development Agreement, 1987
Description: 35 p
Branch Call Number: MF BC-DOC 89-04518