I-CRUZ stole my answer ;-) but have you thought of trying some of the operators down in South Africa? It's sounds like it could be pretty remote down in that part of the world. Perhaps a good source of information cold be the JP Fleet book. Although it is only as current as of the time of the research, it's still an excellent source of info for many many companies around the world. If you are not already familiar with the book, have a look for it, I think it may be worth your while. Let me know if this has helped.
Joe