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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
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • 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. 20
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:

The El Teniente deposit is a porphyry-type ore body. The deposit covers a vertical span of over 1,500 meters. A tabular subvertical dacite porphyry intrusion two kilometers long by 200 meters wide is well exposed in the northern part of the deposit, and a quartz-diorite stock is located at the southeast side. Wall rock are mostly andesites, which are strongly mineralized, containing a high concentration of chalcopyrite and bornite. The size of the deposit is at least three kilometers north-south and close to one kilometer wide.

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-d ........


Mining Methods

  • Block caving


Summary:

A typical level model used at El Teniente mine: block caving, production, ventilation, transport and crushing.

(Translated from Spanish)
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.

In November 2022, Codelco launched the first 100% electric underground LHD (Load, Haul, Dump) mining loader in South America, which began its pilot test in the El Teniente Division. Developed by Epiroc, it can load up to 14 tons of material without generating direct greenhouse gas emissions into the atmosphere.


Crushing and Grinding
Source: Source
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Processing

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Summary:

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Production:

CommodityProductUnits2022202120202019201820172016
Copper Metal t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required465,040464,328475,339
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 - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Daily processing capacity  ......  Subscription required  ......  Subscription required
Annual production capacity  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required53,343 kdmt52,006 kdmt52,454 kdmt50,812 kdmt
Daily mining capacity  ......  Subscription required  ......  Subscription required
Annual production capacity  ......  Subscription required  ......  Subscription required
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Reserves at December 31, 2022:

CategoryTonnage CommodityGradeContained Metal
Proven 873 Mt Copper 0.96 % 8.4 Mt
Probable 334 Mt Copper 0.45 % 1.5 Mt
Proven & Probable 1,206 Mt Copper 0.82 % 9.9 Mt
Measured 1,488 Mt Copper 0.94 % 13.9 Mt
Indicated 1,189 Mt Copper 0.74 % 8.9 Mt
Inferred 2,684 Mt Copper 0.61 % 16.5 Mt
Total Resource 5,362 Mt Copper 0.73 % 39.3 Mt

Commodity Production Costs:

CommodityUnits202120202019201820172016
C1 cash costs Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1.07 / lb   1.14 / lb   0.97 / lb  
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Financials:

Units2022202120202019201820172016
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 3,035   3,412   2,534  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,290   1,348   934.5  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 692.3   692   406.3  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 215.9   234.9   127  
Subscription required - Subscription is required



Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusRef. Date
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Proposed Apr 3, 2023
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Existing Apr 3, 2023
Load-Haul-Dump (LHD) ....................... Subscription required 14 t ....................... Subscription required Existing Dec 31, 2022
Load-Haul-Dump (LHD) ....................... Subscription required Existing Oct 19, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Oct 19, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Oct 19, 2023
Truck (service) ....................... Subscription required ....................... Subscription required Existing Mar 30, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Jan 4, 2022
Truck (underground) ....................... Subscription required ....................... Subscription required Existing Jan 4, 2022
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 20, 2023
....................... Subscription required ....................... Subscription required Subscription required May 24, 2023
....................... Subscription required ....................... Subscription required Subscription required May 20, 2023
....................... Subscription required ....................... Subscription required Subscription required May 20, 2023
....................... Subscription required ....................... Subscription required Subscription required May 20, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2022
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 2023
Other 2023
Other 2023
Annual Report 2022
Annual Report 2022
Financial Review 2022
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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