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Chile
El Teniente Mine

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 Location:
22 km NE from Rancagua, Chile

  Address:
Millán 1020
Rancagua
Chile
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  • Overview
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  • Mining
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  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Copper
  • Molybdenum
  • Gold
  • Silver
  • Sulphuric acid
Mining Method
  • Block caving
Production Start...
Mine Life2072
El Teniente is the largest underground copper deposit in the world.


Owners

Source: p. 15
CompanyInterestOwnership
Codelco Corp. (operator) 100 % Indirect
Codelco, as a productive business, grouped all the deposits (The El Teniente, Andina, Exotica, Chuquicamata and El Salvador) into a single mining, industrial and commercial corporation.

Codelco Corp. operates seven mine sites (known as “divisiones”): Chuquicamata, Ministro Hales, Radomiro Tomic, Gabriela Mistral, Salvador, Andina, El Teniente, in addition to the Ventanas Smelter and Refinery.

Contractors

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Deposit Type

  • Porphyry
  • Breccia pipe / Stockwork


Summary:

Chile’s El Teniente deposit is the largest known porphyry Cu-Mo orebody (>70 Mt Cu), and is genetically related to Late Miocene–Early Pliocene igneous activity on the western slopes of the Andean Cordillera (cf. Howell and Molloy, 1960, Camus, 1975, Cuadra, 1986, Skewes and Stern, 1995). The deposit is 2700 m long by 1000 to 1700 m wide and is elongated in a N-S direction, with a recognized vertical extent of about 1800 m. Approximately 80% of the copper at El Teniente is distributed within a stockwork of mineralized veinlets and minor hydrothermal breccias within pervasively altered andesites, basalts and gabbros that are part of the Upper Miocene country rocks. Two intrusive bodies occur within the deposit, the Sewell Diorite (actually a tonalite) in the southeast part of the orebody and the dacitic Teniente Porphyry in its northern part. The Teniente Porphyry occurs as a north-south trending dike 1500 m long and 200 m wide. Minor quartz-diorite or tonalite intrusions known as the Central Diorite and the Northern Diorite occur along the eastern side of the deposit. Hydrothermal breccias commonly occur along the contacts of intrusive bodies with the country rocks. The Braden Breccia is a conspicuous diatreme in the center of the deposit that forms a pipe 1200 m in diameter at the surface, narrowing to 600 m at a depth of 1800 m. The Braden diatreme pipe is poorly mineralized (~0.3% Cu), but it is surrounded by the copper-rich Marginal Breccia, a discontinuous rim of tourmali ........


Mining Methods

  • Block caving


Summary:

A typical level model used at El Teniente mine: block caving, production, ventilation, transport and crushing. Teniente Projects Portfolio consists of the following projects: Andes Norte Nuevo Nivel Mina (NNM), Diamante and Andesita, formerly Nuevo Nivel Mina, the original project, and which will extend the division operations by 50 years. We started mining Teniente Level 9, the deepest level compared to other areas currently in production.


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits2021202020192018201720162015
Copper Metal t  ......  Subscription required  ......  Subscription required  ......  Subscription required465,040464,328475,339471,157
Gold Metal kg  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal kg  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Sulphuric acid t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Molybdenum Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Operational Metrics:

Metrics201920182017
Ore tonnes mined 52,006 kdmt52,454 kdmt50,812 kdmt
Daily mining capacity
Annual production capacity

Reserves at December 31, 2021:

CategoryTonnage CommodityGradeContained Metal
Proven 885 Mt Copper 0.97 % 8.5 Mt
Probable 373 Mt Copper 0.47 % 1.8 Mt
Proven & Probable 1,258 Mt Copper 0.82 % 10.3 Mt
Measured 1,415 Mt Copper 0.95 % 13.4 Mt
Indicated 1,091 Mt Copper 0.79 % 8.6 Mt
Inferred 2,040 Mt Copper 0.65 % 13.3 Mt
Total Resource 4,546 Mt Copper 0.78 % 35.4 Mt

Commodity Production Costs:

CommodityUnits20192018201720162015
C1 cash costs Copper USD  ......  Subscription required 1.07 / lb   1.14 / lb   0.97 / lb   1.01 / lb  

Financials:

Units202120202019201820172016
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 3,035   3,412   2,534  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,290   1,348   934.5  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 692.3   692   406.3  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 215.9   234.9   127  
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Heavy Mobile Equipment as of January 4, 2022:
HME TypeModelQuantity
Loader ....................... Subscription required ....................... Subscription required
Truck (underground) ....................... Subscription required ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 28, 2022
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Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2015
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Corporate Presentation 2018
Annual Report 2017
Corporate Presentation 2017
Annual Report 2016
Corporate Presentation 2016
Financial Review 2016
Annual Report 2015
Other 2014
Project Description 2014
Project Description 2011
Project Description 2010
Other 2005
Other 2004
Other 2001
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