Batu Hijau Copper-Gold Mine, Indonesia

Batu Hijau copper-gold mine located Indonesian Sumbawa province Nusa Tenggara 1,530km Jakarta. Contract project held PT Newmont Nusa Tenggara (PTNNT) company owned Newmont Indonesia (US 35.44%); Nusa Tenggara Corporation (Japan 27.56%) PT Pukuafu Indah (Indonesia 20%) PT Multi Daerah Bersaing (Indonesia 17%). Newmont project operator.

SBM VSI5X Impact Crusher, VSI Impact Crusher, PE Jaw Crusher, JCE Jaw Crusher

Construction mine its associated infrastructure completed 1999 PTNNT spent years exploring resource commercial production beginning 2000. operation continues Newmont’s lowest cost assets. 2005 copper sales fell 16.2% 259,780t (2004= 310,000t) applicable cost $0.53/lb average realised price TRCs $1.45/lb. However consolidated sales rose 720,500oz applicable costs $152/oz compared 715,000oz 2004.

project supplied 120MW coal-fired supported nine diesel generators.

GEOLOGY RESOURCES

Bata Hijau major gold-rich porphyry copper deposit typical islands southeast Asia. gold-rich porphyries overwhelmingly hosted composite stocks diorite quartz-diorite and lesser degree felsic compositions tonalite monzogranite. deposits tend characterised correlation distribution copper sulphides (chalcopyrite bornite) native metal addition having notably higher magnetite content. typically occurs (<10-15 micron) inclusions copper sulphides.

SBM VSI Impact Crusher, PE Jaw Crusher, JCE Jaw Crusher, Symons Cone Crusher

As 2008 Batu Hijau reserve containing 968mt 0.41% Cu 0.29g/t Au. current production rates continue 2027.

MINING MILLING

Batu Hijau open-pit mine. transported primary using P&H 4100 electric shovels fleet 220t-capacity Caterpillar 793C mechanical-drive haul trucks. mine typically handles around 600,000t/d waste grading average 0.49% copper 0.39g/t gold.

"During 2009 Batu Hijau shipped 778kt copper concentrate containing 504 Mlbs copper 557Koz gold."

Following primary crushing transported concentrator overland conveyor 1.8m wide 6.8km long. concentrator circuit consists two-train SAG ball mills followed primary scavenger flotation cells vertical regrind mills cleaning flotation cells copper-gold concentrate grading 32% copper 19.9g/t gold.

SBM PE Jaw Crusher, JCE Jaw Crusher, Symons Cone Crusher, Hydraulic Cone Crusher

Counter-current decantation thickeners used dewater concentrate slurry pipelined 17.6km Benete. dewatered further stocked 80,000t-capacity storage prior shipment sea.

PRODUCTION

During 2009 Batu Hijau shipped 778kt copper concentrate containing 504Mlbs copper 557Koz gold.

TAILINGS DEPOSITION

The tailings operation flow gravity process ocean deposited 3km coast depth 108m. there tailings non-toxic non-hazardous migrate towards Java Trench ultimately deposited depths excess 4,000m.

ENVIRONMENT

There considerable environmental challenges Batu Hijau including steep terrain widely dispersed facilities stretching 40km. site tropical monsoonal climate rainfall extended arid season almost rainfall. environmental considerations include significant seismic activity associated risk tsunamis acid drainage not mention existence site endangered species yellow-crested cockatoo.

SBM JCE Jaw Crusher, Symons Cone Crusher, Hydraulic Cone Crusher, Spring Cone Crusher

Considerable environmental controls place Newmont reported operation improved its ‘five-star’ environment rating stars 2005.

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