Agree with you Merjr that GM's post are relevant and appreciated, however there are some who as we all know will disagree... anyhow found an interesting article regard oil & natural gas in South Africa ... speaks of the major areas finding Natural gas... go to page 6 ...
https://www.kpmg.com/Africa/en/IssuesAndInsights/Articles-Publications/Documents/Oil%20and%20Gas%20in%20Africa.pdf
South Africa could very well use KWG's patent technology to eliminate the brown outs the mines are presently experiencing... (which relates back to GM's articles on SA power grid)