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Batu Hijau Copper-Gold Mine

Producer of

Copper and gold


Sumbawa Island, Indonesia


PT Newmont ( 45%), Nusa Tenggara Mining Corp. (35%), PT Pukuafu Indah (20%)

Geology type

Gold-rich porphyry copper

Mineral type

Copper sulphides with gold

Reserve base

1,011Mt at 0.48% Cu and 0.37g/t Au (2004)

Annual production

Annual production 325,500t Cu, 719,000oz Au (2005)

Mining method

Open pit

Processing method

Crushing, grinding and flotation



Key equipment

Boart Longyear drilling equipment

P&H mining shovels

Caterpillar haul trucks

Svedala SAG mills

Wemco-Baker Process flotation cells

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