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Indonesia
Batu Hijau Mine

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 Location:
80 km SW from Sumbawa Besar, Indonesia
  Regional Office:
West Sumbawa Regency West Nusa Tenggara
Indonesia
Phone  ...  Subscription required
Fax+62-372-6353-19
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Fleet
  • Personnel
  • Filings & News
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Copper
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life10 years (as of Jan 1, 2021)
In February 2021, AMNT had to suspend operations for one month to contain the spread of COVID-19 at the Batu Hijau mine site. Then, as the Delta variant surged in Indonesia in August 2021, AMNT halted mining operations for three months because of operator shortages.

In compliance with the 2020 Mineral and Coal Mining Law, AMNT has committed to building a copper smelter and precious metals refinery through its subsidiary company PT Amman Mineral Industri (AMIN).
The facilities will be located near the AMNT port at Benete Bay, West Sumbawa Regency, West Nusa Tenggara Province, and will have a design capacity of 900,000 dry tonnes of copper concentrate per annum, in line with the reserves and long-term production plans at Batu Hijau and Elang.
Latest NewsMacmahon and PT Amman Mineral Nusa Tenggara close in on Batu Hijau Phase 8 contract     February 20, 2023

Owners

Source: p. 262,403
CompanyInterestOwnership
PT Medco Energi Internasional Tbk 23.13 % Indirect
Holding company PT Amman Mineral Internasional (AMI) owns the entire share capital of AMNT.

Medco's ownership of AMI is 23.13%.

Contractors

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Deposit Type

  • Porphyry

Summary:

The deposit is hosted by a central stock of multiple tonalite porphyries intruded into older diorite and andesite volcanic wallrocks and activities continue to develop the reserve.

Mining Methods

  • Truck & Shovel / Loader

Summary:

The Batu Hijau is a large open pit porphyry copper/gold deposit mined using traditional truck and shovel techniques.

AMNT is now developing Phase 8 to extend the mine life beyond 2030.

Since mining operation started in 2000, the mine has gone through a total of seven mining phases. Currently, the mine has a length of roughly 3 km, a width around 2.5 km, with a current maximum depth at -315 meters below sea level. In Batu Hijau Pit, each bench is 15 meters high, with bench face angle varies between 60 and 70 degrees, and the overall slope angle of the pit varies between 36 and 38 degrees.

Crushing and Grinding
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Processing

Source: Subscription required

Summary:

- subscription is required.

Production:

CommodityUnits202120202019201820172016
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required71397841
Copper M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220192018
Daily processing capacity  ......  Subscription required
Total tonnes mined  ......  Subscription required263 Mt178 Mt
Daily mining capacity  ......  Subscription required
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Reserves at December 31, 2021:

CategoryTonnage CommodityContained Metal
Proven & Probable Mt Gold 8,900 koz
Proven & Probable Mt Copper 7,040 M lbs
Total Resource Mt Gold 14,797 koz
Total Resource Mt Copper 16,093 M lbs

Financials:

Units2021202020192018
Capital expenditures M USD
Pre-tax Income M USD
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -167.7  
Subscription required - Subscription is required

Heavy Mobile Equipment:
HME TypeModelSizeQuantityRef. Date
Excavator ....................... Subscription required Dec 31, 2016
Excavator ....................... Subscription required 800 t ....................... Subscription required Feb 16, 2023
Shovel ....................... Subscription required Dec 31, 2016
Truck (haul) ....................... Subscription required ....................... Subscription required Dec 31, 2016
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 4, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required 2022
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Form 10-K 2016
Press Release 2016
Year-end Mineral Reserves 2016
Form 10-K 2015
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News:

NewsDate
Macmahon and PT Amman Mineral Nusa Tenggara close in on Batu Hijau Phase 8 contract February 20, 2023

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