[Happy Monkey]

If you wish to prevent forest fires, what needs to be removed are dead trees, fallen branches, and underbrush. Thinning out some younger trees may sometimes help as well, since smaller trees are more flammable. Lumber companies do not want dead wood, broken branches, underbrush, or immature trees. In fact, harvested forest is much more likely to have dead wood and branches laying around, underbrush grows quickly in harvested areas, and replanting consists (of course) of immature trees.

Of course, you can't make much money dragging dead wood out of a forest.