RE: The air born survey map23 Feb 2019 15:41
from my reading of this map, I guess that this area was generated by a south west crust push towards the north east. this resulted in
1) The front line ranging from area 7 to 1. it is hilly and a twisted formation, that means the area where kalaba is located, it means that ore could be at surface or close in some ridges and drop then reappear in another parallel ridge so the mining area could be a set of access-able branches not only one.
2) The second line 4 to 2 and continue north west. this is a sharper one fold formation
3) The ridge 'area 1' sloping towards the north east, just by looking at the area topology and the depth of the top layer they can estimate the ore.
4) The ridge 'area 3' sloping towards the south west, is similar to the area 1,
5) the smooth gradual dip towards the north east towards 'area 6'
From this map it appears that the open pit mining projects could easily start at open pit where the red color shows and then negotiate its way towards the depth. from this map the triangle 1, 3 and 6 would be the most consistent long term, although it may need removing the top layer. the depression between area 1 and 3 may show some depth moving away from the ridges . In general it is a very vast deposit, simple and at constant depth in the north east and getting more complicated at the south west. best luck all. I guess the best strategy is to gauge the depth at the north east limit zone to see if it is still at reasonable depth there before any new company moves to that area.
http://s2.q4cdn.com/256050873/files/images/2019/zamsort-intergrated-anomalies4.jpg