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Indonesia
Tujuh Bukit Mine

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 Location:
55 km SW from Banyuwangi, Indonesia
  Regional Office:
The Convergence Indonesia 20th Floor, Jl. HR. Rasuna Said, Karet Kuningan Setiabudi
Jakarta
Indonesia
12940
Phone  ...  Subscription required
Fax+62-21-29880392
EmailEmail
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life5.25 years (as of Jan 1, 2019)
Beneath the surface of the Tujuh Bukit Gold Mine in Banyuwangi, East Java, contains about 1.8 billion tonnes of ore potential, consisting of 8.2 million tonnes of copper and 28.6 million ounces of gold. The world-class ore content can be compared to the Bukit Hijau mine in Sumbawa and Grasberg in Timika, Papua. The Tujuh Bukit Copper Project is one of the world’s largest undeveloped copper reserves.

The Tujuh Bukit Copper Project is currently in the exploration stage.

Owners

Source: p. 16
CompanyInterestOwnership
PT Merdeka Copper Gold Tbk 100 % Indirect
PT Bumi Suksesindo (operator) 100 % Direct
PT Merdeka Copper Gold Tbk (“Merdeka”), a holding company with operating subsidiaries engaging in mining business activities. The subsidiaries are (i) PT Bumi Suksesindo (“BSI”) as the holder of the operation production mining business license for the Tujuh Bukit mine, (ii) PT Damai Suksesindo (“DSI”) which holds the adjacent exploration permit, (iii) PT Batutua Tembaga Raya (“BTR”) as the holder of operation production mining business license specifically for processing and refining.

Contractors

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Deposit Type

  • Epithermal

Summary:

The Tujuh Bukit Oxide deposits are classified as High Sulphidation Epithermal (HSE) type containing economic accumulations of gold and silver.

Mining Methods

  • Truck & Shovel / Loader

Summary:

Tujuh Bukit Gold is a gold and silver mine located in Banyuwangi Regency, East Java Province and employ conventional truck and shovel mining method.

Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits202220212020201920182017
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required167,506141,468
Silver oz  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required7.4 Mt5.3 Mt3.3 Mt
Waste  ......  Subscription required  ......  Subscription required8.4 Mt9.4 Mt4.1 Mt
Tonnes processed  ......  Subscription required  ......  Subscription required7.4 Mt4.9 Mt3.2 Mt
Daily processing capacity  ......  Subscription required  ......  Subscription required22,500 t
Annual processing capacity  ......  Subscription required  ......  Subscription required8.2 Mt4 Mt4 Mt
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Reserves at December 31, 2021:
Tujuh Bukit Gold Mine Mineral Resource Cut-off 0.1 g/t gold.

Tujuh Bukit Gold Mine Ore Reserve Cut-off 0.2 g/t gold.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Stockpiles 1.5 Mt Gold 0.38 g/t 18 koz
Proven Stockpiles 1.5 Mt Silver 8.4 g/t 408 koz
Probable In-Situ (OP) 29 Mt Gold 0.67 g/t 626 koz
Probable In-Situ (OP) 29 Mt Silver 28 g/t 26,469 koz
Measured Total 1.5 Mt Gold 0.4 g/t
Measured Total 1.5 Mt Silver 23 g/t
Indicated Total 73.4 Mt Gold 0.45 g/t
Indicated Total 73.4 Mt Silver 24 g/t
Inferred Total 7.2 Mt Gold 0.28 g/t
Inferred Total 7.2 Mt Silver 14 g/t
Total Resource Total 82.1 Mt Gold 0.44 g/t 1,137 koz
Total Resource Total 82.1 Mt Silver 24 g/t 60.9 M oz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Cash costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 374 / oz†   297 / oz†  
All-in sustaining costs (AISC) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 596 / oz†   425 / oz†  
^ Guidance / Forecast.
† Net of By-Product.
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Financials:

Units20212020201920182017
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 235   133  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 155   100  
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
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Staff:

Total WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
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................................... Subscription required 2019
................................... Subscription required 2019
Quarterly Report 2018
Project Description 2016
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