The Oakland Institute Report shows SGCP has 45,527 ha devoted to our Carbon Credit program and "Also has 2 farming operations."
I think a hectare is around 2 acres so that's approximately 90,000 acres under developmental control by SGCP. That may not be good enough for you but it's good enough for and recognized by the World Bank. I think the farming operations comprise about 3,000 additional acres.
Melt already gave you some mining pointers for your search. Good luck!
It should be noted that the Oakland Institute is not a stock promotion group or paid IR firm. They have nothing to do with stocks.
They compiled a 7 country case study project report to document and examine land investment deals in Africa.