Bolide - thanks for your questions, all good ones. I don't have any qualifications in geology, so take any opinions from me on any geo-related matters with a big grain of salt.
- I'm heading out for the afternoon but will do my best to answer your questions later tonight.
In the meantime, for more info on botswana have a look here:
http://conticoalers.com/category/projects/botswana/
and here
http://www.cicenergycorp.com/