I found the following post while browsing the Magic Cafe Forums, and decided to share it here since I've been posting about bone divination. It's informative and thought provoking. Enjoy!
I'm a Sangoma Traditional Doctor, received my initiations and completed 'thwasa' in Swaziland under Zulu Elder and Master Sangoma PH Mntshali.
Diagnosis and divination with bones isn't something you're going to find a lot of written information about because the information is passed through ancestors and an oral, shamanic tradition.
A man by the name of David Cumes is a both a wonderful traditional healer and medical doctor, a past associate of mine and one of the other three Sangoma TDR's here in the States. He wrote a wonderful book about his thwasa and initiations in the Zulu Mystery Traditions titled, Africa in my Bones that's as good a resource as you're going to find regarding the Zulu bone casting tradition and this ancient practice....
... I am so sorry to do this to you, but this post has been moved to my new website, Divination, and can be found in its entirety here: The Zulu Bone Casting Tradition
As you explore this site, you may find links to a "page not found" instead of something cool and magickal. For this I apologize. I am very working hard behind the scenes to restore those pages along with a link to their homes on my new website where they can be viewed in full.