Abstract
A simple simulation model is described which imitates the passage of a mechanical harvester, such as the Beloit or Hiabob harvesters, through a pulp-wood stand. Using this model, which has been programmed for an I.B.M. 1620 computer, it is possible to study the effect that stand structure and machine size have on harvesting pattern. Modifications to the model to include estimates of operating time are suggested. In its final form the model could furnish information that will be of much use to the machine designer and to the woodland manager.