Bone marrow transplant - how they do it?

Some of you have asked me how to harvest bone marrow from a donor.
I would like to share this link with you, hope you get some idea.

Daniel Kraft demos his Marrow Miner -- a new device that quickly harvests life-saving bone marrow with minimal pain to the donor. He emphasizes that the adult stem cells found in bone marrow can be used to treat many terminal conditions, from Parkinson's to heart disease.click here.