[ViggoG]

Some of these resins used crushed, ground or chopped

materials as fillers and charactistic modifiers, ie:

weight, stiffness, and such.

Materials were such as wheat hulls, nut shells, a wide

variety of fibers and such (almost anything)

At NASA we encountered chopped fiberglass, walnut,and

grain stems and hulls. for fillers in our own spacecraft

sub assy's .

ViggoG