Mantos
Blancos S.A. mining company is established.
Large scale development of open pit operation begins.
Oxide ore treatment plan opens.
Underground mine development begins and sulfide ore is
found.
Anglo American acquires 40% of Mantos Blancos S.A.
Concentration plant for sulfide ore treatment becomes
operational.
Anglo American becomes majority shareholder of Mantos
Blancos S.A
Expansion of operations begins with the opening of the
Santa Barbara pit, which unifies the existing pits.
Concentration plant expanded to a production capacity of
3.6 million tonnes per year.
Second concentration plant expansion, reaching a production
capacity of 4.1 million tonnes per year.
.
The old oxide ore treatment plant (precipitation) closes
down. The old copper smelter closes. Company begins
oxide ore treatment through leaching, solvent extraction
and electrowinning.
Extraction in underground mine comes to an end.
Anglo American acquires 99.97% interest in Mantos
Blancos S.A.
