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Indonesia
Tujuh Bukit Mine

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 Location:
55 km SW from Banyuwangi, Indonesia
  Regional Office:
Desa Sumberagung, Kecamatan Pesanggaran, Kabupaten Banyuwangi, Provinsi Jawa Timur
Indonesia
Phone  ...  Subscription required
Fax+62333 711200
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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)
Tujuh Bukit Gold Mine is one of the largest primary gold mine in Indonesia.

Tujuh Bukit Copper Project is located beneath the existing Tujuh Bukit Gold Mine. Merdeka released a project update in the form of a Scoping Study. The Scoping Study envisages a large-scale underground block cave mine with a peak mill feed of 24Mtpa, which is estimated to produce 2.9Mt of copper and 10.1Moz of gold over a mine life of 40 years. The PFS is expected to be completed in March 2023.

Merdeka is aiming to complete the environmental permitting by September 2023, with the start of development to commence in early 2024.

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 1,520 kt Gold 0.38 g/t 18 koz
Proven Stockpiles 1,520 kt Silver 8 g/t 408 koz
Probable In-Situ (OP) 29,053 kt Gold 0.67 g/t 626 koz
Probable In-Situ (OP) 29,053 kt Silver 28 g/t 26,469 koz
Proven & Probable Total 30,573 kt Gold 0.66 g/t 645 koz
Proven & Probable Total 30,573 kt Silver 27 g/t 26,877 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 Feb 14, 2023
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....................... 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 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

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