yeah actually hurricane camile in the 60's wiped out the last of the tung tree plantations. read that non wiki link it's very interesting and answers all those questions u just asked. i think im gonna try to make a press similar to a screw or fly press to try to harvest some. my tree is bout 30 ft tall and has hundreds of nuts on em currently starting to fall. the nuts are little bigger than a golf ball, and tge fruit inside you get two sides big as a big pecan.