Abstract
ABSTRACT PROCEDURES, crew size, and machines suitable for swinging and processing whole-tree Douglas-firs during cable thinning were evaluated in a time and productivity study. Chainsaw de-limbing and bucking were 3.6 times more productive if performed at the roadside rather than at the stump. A rubber-tired cable skidder and hydraulic knuckleboom loader were compared for efficiency in swinging logs. The skidder's production rate, 7.76 m3 per scheduled machine hour (SMH), balanced more closely with that of the smallwood yarder (5.95 mVSMH) than did that of the loader (9.09 mVSMH). Costs were also lower for the skidder ($6.50/m3) than for the loader ($7.59/m3).
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