Abstract Results of logging and milling time studies in eastern forest regions are summarized in terms of man-hour cost, and their use in estimating present current costs in money is illustrated. They show consistency in labor efficiency among different localities. In connection with lumber-recovery values, they indicate that in most cases operating margins of at least 10 per M can be realized where cutting is confined to trees 15 inches d. b. h. and larger. These results emphasize the economic advantages of growing trees to financial maturity.
Burt P. Kirkland (1943) studied this question.