On Fri, 14 Oct 2005 12:12:09 -0700, s wrote:

you may find that the greatest value is in the root balls.

Strictly it's the root crown (above the root ball itself). The height
for felling a walnut is higher than for a typical tree, just so you
don't put the chainsaw through the very best part of it. You can lose a
_lot_ of the value of a good quality walnut by having it felled by
someone who isn't familiar with felling walnuts.

If it's small enough, and you have the space, some people don;t fell
them at all but lop the branches, cut the roots and then winch the whole
trunk over, root crown and all. This isn't a task for the unskilled or
unequipped.