Download (PDF 707 KB): https://research.fs.usda.gov/download/treesearch/43070.pdf
Abstract
One of the least explored variables in timber harvesting is the effect of ground conditions on log production . The Southern Hardwoods Laboratory is studying this variable and its influence on performance of skidding vehicles in Southern bottom lands. The test reported here was designed to evaluate the effects of bark features on skidding coefficients, but it also yielded information on other log characteristics and on effects of soil moisture.
Citation
Darwin, William N., Jr. 1960. Soil Wetness Influences Log Skidding. Forest Products Directory p. 90.