Hi briauchmeister.
I have not looked at any of my research for at least 2 years. Just going by memory, I believe the 33% Fe was converted into 66% and 68% Fe from the Itabirite. I believe it was around 2 billion tonnes of high grade from around 5 billion tonnes of 33%.
The 0.5 billion of high grade I believe was just from one mine pit.
Even in Cameroon there would be at least 5 mine pits. Nabeba would consist of several mine pits going as far East as Elogo.
If they got permits to explore North West of Elogo which is outside their present permit area, there would be more mine pits which are the one's that I put them onto.
Cheers Westcott.