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Indonesia
Toka Tindung Complex

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 Location:
30 km NE from Manado, Indonesia

  Regional Office:
Menara Rajawali, 19th Floor Jl. DR Ide Anak Agung Gde Agung Lot #5.1 Mega Kuningan
South Jakarta
Indonesia
12950
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Fax+62-21-576-1720
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  • Overview
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  • Geology
  • Mining
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  • Production
  • Reserves
  • Costs & Financials
  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life21 years (as of Jan 1, 2021)
The Toka Tindung Gold Mine is one of the largest gold mining operation in Southeast Asia. Toka Tindung Gold Mine open pit mining complex consists of several open pits, including the active producing open pits: Toka, Araren and Kopra, and the Alaskar, Talawaan and Marawuwung open pits, which are in pre-production.


Owners

Source: p. 4
CompanyInterestOwnership
PT Archi Indonesia Tbk 100 % Indirect
Ownership Tree
Operating Companies: PT Meares Soputan Mining (“PT MSM”) & PT Tambang Tondano Nusajaya (“PT TTN”); both are wholly-owned subsidiaries of PT Archi Indonesia Tbk.

Contractors

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Deposit Type

  • Epithermal
  • Vein / narrow vein


Summary:

The Toka Tindung Gold Mine area is located on the eastern margin of the South East Asia Plate within the SulawesiEast Mindanao magmatic arc, a highly mineralised belt of volcanics and high level intrusives of early Miocene to Quaternary age. A series of north-northwest–south-southeast trending faults define structural corridors which host the deposits. The deposits are low-sulfidation epithermal systems.

Low-sulphidation epithermal gold mineralisation within the Project area occurs in shoots that form at dilational sites along quartz vein-hosted structures.

The Toka Tindung deposit lies at the northern end of a series of north-northwest trending faults. These faults define a structural corridor at least 2 km wide and extending for about 15 km south of Toka Tindung Gold Mine. The mineralised system is up to 200 m wide and has been delineated over a 1.2 km strike extent. The gross trend of the stockwork zone and larger veins at Toka show a north strike, with the veins generally near vertical or dipping steeply to either the east or west. Local variations in dip, strike and width occur along individual veins within the stockwork system.

The main structural elements in the Batupangah area are brittle faults and fractures with north, north-northeast and northwest mineralised trends. These structures are interpreted to be block faults and have dips generally steeper than 60°. In summary:
- At Pajajaran, two subvertical, parallel sheeted veins ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Toka Tindung Gold Mine commenced overburden mining in 2009 and production mining operations in January 2011.

The Toka Tindung Gold Mine open pit mining complex consists of several open pits within an area spanning approximately 10 km2. These include the active producing open pits; Toka, Araren, and Kopra, as well as the Alaskar and Marawuwung open pits, which are in pre-production and due to commence production in 2021 and 2024, respectively. The Pajajaran and Blambangan open pits have been mined out (completed) and are being backfilled with waste rock from other operating open pits. This area also includes the Toka, Batupangah, Pajajaran and Kopra WRDs.

Since mining inception, Archi has successfully transitioned the Project to a multi-open pit operation with initial mining commencing at Toka (2011), Pajajaran (2011), Kopra (2012), Blambangan (2013) and Araren (2015).

The geotechnical design parameters are bench heights either 15 m or 20 m, berm widths varied between 5 m and 10.5 m, and batter angles between 34° and 70°, dependent on the open pit depth and rock type (oxidised, transitional and fresh). The general open pit design parameters are ramp widths of 15 m (single lane) and 25 m (dual lane) and ramp gradients of 10%.

Final designed open pit depths are:
No Open Pit Name Design Depth(m)
1 Toka - 170;
2 Marawuwung - 105;
3 Alaskar - 165;
4 Kopra - 195;


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits2021202020192018201720162015
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required270251225168
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Equivalent oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré.
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Operational Metrics:

Metrics202120202019201820172016
Total tonnes mined  ......  Subscription required  ......  Subscription required19 Mt
Ore tonnes mined  ......  Subscription required  ......  Subscription required3.5 Mt3,212 kt2,552 kt1,774 kt
Waste  ......  Subscription required  ......  Subscription required15.5 Mt21,828 kt27,417 kt23,879 kt
Tonnes milled  ......  Subscription required  ......  Subscription required3,304 kt2,350 kt2,160 kt1,880 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required4.4 6.8 10.7 13.5
Annual milling capacity  ......  Subscription required  ......  Subscription required3.3 Mt3 Mt
Daily milling capacity  ......  Subscription required  ......  Subscription required
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Reserves at December 31, 2020:
The Mineral Resources are reported at a 0.2 g/t Au cut-off.

CategoryTonnage CommodityGradeContained Metal
Proven 18.2 Mt Gold 1.14 g/t 667 koz
Proven 18.2 Mt Silver 2.6 g/t 1,521 koz
Probable 80.1 Mt Gold 1.25 g/t 3,218 koz
Probable 80.1 Mt Silver 2.56 g/t 6,597 koz
Proven & Probable 98.3 Mt Gold 1.23 g/t 3,884 koz
Proven & Probable 98.3 Mt Silver 2.57 g/t 8,118 koz
Measured 19.7 Mt Gold 1.1 g/t 696 koz
Measured 19.7 Mt Silver 2 g/t 1,583 koz
Indicated 97.2 Mt Gold 1.3 g/t 3,942 koz
Indicated 97.2 Mt Silver 3 g/t 7,969 koz
Inferred 28.8 Mt Gold 1 g/t 890 koz
Inferred 28.8 Mt Silver 2 g/t 1,401 koz
Total Resource 145.8 Mt Gold 1.2 g/t 5,528 koz
Total Resource 145.8 Mt Silver 2 g/t 10,953 koz

Commodity Production Costs:

CommodityUnits202120202019201820172016
All-in sustaining costs (AISC) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 613 / oz   610 / oz   572 / oz  
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Operating Costs:

Units202020192018
OP mining costs ($/t mined) USD 3.253.743.11
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Financials:

Units202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 85   54   48  
Sustaining costs M USD  ......  Subscription required  ......  Subscription required 13   5   3  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 347.1   293.7  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 184.7   179.8  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 189.7   184.5  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 149.7   135.8  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 104   94.5  
EBITDA M USD  ......  Subscription required  ......  Subscription required
Operating Cash Flow M USD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment as of February 26, 2021:
HME TypeModelSizeQuantityLeased or
Contractor
Compactor 16 t ....................... Subscription required Leased
Dozer (crawler) ....................... Subscription required ....................... Subscription required Leased
Dozer (crawler) ....................... Subscription required ....................... Subscription required Leased
Drill (blasthole) ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required 260 t ....................... Subscription required Leased
Excavator ....................... Subscription required 120 t ....................... Subscription required Leased
Grader ....................... Subscription required ....................... Subscription required Leased
Loader (FEL) 100 t ....................... Subscription required Leased
Truck (fuel / lube) ....................... Subscription required 25000 l ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 100 t ....................... Subscription required Leased
Truck (haul) 45 t ....................... Subscription required Leased
Truck (service) ....................... Subscription required Leased
Truck (water) 20 t ....................... Subscription required Leased
Truck (water) ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 14, 2022
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
Financial Review 2018
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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