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Ashanti Goldfields Gold Mine – Obuasi – Ghana

Producer of

Gold

Location

South-central Ghana

Ownership

AngloGold Ashanti (100%)

Geology type

Gold-bearing veins in Precambrian greenstones

Mineral type

Native gold in quartz veins; gold within arsenopyrite

Reserve base

10.7Mt proven ore (2006)

Annual production

391,000oz Au (2005)

Mining method

Mechanised underground; surface mining and tailings retreatment to be discontinued

Processing method

Four plants treat oxide ore, sulphide ore, tailings and heap-leached ore; sulphide plant utilises bio-oxidation

Employment

6,600

Underground

Atlas Copco drilling and loading fleet

Nordic Mining Technology trolley electric system

Clayton locomotives

Atlas Copco Robbins raise-boring equipment
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