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Peru
Toquepala Mine

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 Location:
35 km E from Moquegua, Peru

  Regional Office:
Av. Caminos del Inca 171, Urb. Chacarilla del Estanque
Santiago de Surco
Peru
Phone  ...  Subscription required
Fax(511) 512-0492
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life57 years (as of Jan 1, 2021)


Owners

Source: p. 51,52
CompanyInterestOwnership
Grupo Mexico S.A. de C.V. 88.28 % Indirect
Ownership Tree
The Project is wholly owned by Southern Copper Corporation, Sucursal del Perú, which is a majority-owned, indirect subsidiary of Grupo Mexico S.A.B de CV.

Contractors

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Deposit Type

  • Porphyry


Summary:

The Toquepala deposit is considered to be an example of a copper–molybdenum porphyry deposit.

The deposit is ovoid, extending over a 3.3 x 3.5 km area. Mineralization has been drill tested to about 950 m from the original land surface. Drilling from within the pit base indicates primary mineralization extends for an additional 930 m below the pit bottom.

Mineralization is closely associated with a complex, 1,500 m diameter intrusive centre dominated by four phases of porphyritic dacite plugs, referred to as "T", "Main", "L/M" and "Late", a dacite diatreme and agglomerates, extensive hydrothermal breccias and latite porphyry stocks and dikes.

In the mine area, the Toquepala Lineament appears to control some aspects of mineralization. The lineament is based on the distribution of three porphyry stocks, two breccia bodies, numerous pebble and thin intrusive dikes within the mine, as well as the Cerro Toquepala, Cerro Azul and Totoral breccia pipes, along a 20º azimuth. The lineament is controlled by a north–northeast-trending pre-mineral fault system.

Mineralization consisted of leached capping, oxide, enriched, transitional and primary mineralization. The first three types have largely been mined out.

Mineralization types included:
• Leached capping was predominantly limonite (jarosite 30%, hematite 60% and goethite 10%) mostly disseminated and in fractures. It is mostly mined out; however, remnants occur around th ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Toquepala Operations use conventional truck-and-shovel open pit mining methods.

The open pit mine currently has a circular, conical shape with a diameter of approximately 3.1 km. At present, the highest elevation of the pit walls is on the east wall at 3665 masl. The current bottom of the pit is at 2725 masl, while the depth of the final pit design will be at 2095 masl. Eight pit phases remain in the life-of-mine (LOM) plan, starting with phase 4 and ending with phase 11.

Pit Design Criteria:
Bench height - 15m;
Minimum mining width - 100m;
Ramp width - 37.5m;
Ramp gradient - 8%;
Inter-ramp height - 150m;
Geotechnical berm width - 20m;
Bench face angle - 65 degree;

Mining is conducted using two 12-hr shifts. The mining operations can be summarized as:
• Initial drilling and blasting
• Loading, using shovels, of the blasted material into haul trucks
• Transport of ore and waste, depending on destination to WRSFs, run-of-mine (ROM) leach deposit, leach crusher, and mill crusher.


Crushing and Grinding
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Processing

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Summary:

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Production:
Since 2019 stripping ratio obtained dividing waste by leachable material plus ore mined.

CommodityProductUnits202120202019201820172016
Copper Cathode kt  ......  Subscription required  ......  Subscription required  ......  Subscription required262525
Copper Metal in concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required144123116
Copper Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required528452424
Molybdenum Metal in concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Molybdenum Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Operational Metrics:

Metrics202120202019201820172016
Total tonnes mined  ......  Subscription required  ......  Subscription required249,083 kt241,514 kt203,778 kt209,064 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required134,948 kt126,827 kt105,459 kt98,425 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required0.85 9.64 8.98 9.48
Tonnes milled  ......  Subscription required  ......  Subscription required38,121 kt23,060 kt20,392 kt20,071 kt
Daily milling capacity  ......  Subscription required  ......  Subscription required120,000 t120,000 t60,000 t60,000 t
Annual production capacity  ......  Subscription required  ......  Subscription required56 kt of copper cathode56 kt of copper cathode56 kt of copper cathode56 kt of copper cathode
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Reserves at December 31, 2021:
The break-even cut-off grade used for mineral resource estimation for sulfide material was 0.166% Cu. Low-grade sulfide material to be sent to the leach dumps was reported at an internal cut-off of 0.054% Cu.

For mineral reserves variable net smelter return cut-offs of US$11.419–US$12.805/t for concentrator, and an internal NSR cut-off of US$0.449/t for leaching process.

CategoryOreTypeTonnage CommodityGradeContained Metal
Probable ROM leach 3,195,209 kt Copper 0.145 % 10,246,302 k lbs
Probable Sulphide 2,463,314 kt Copper 0.463 % 25,132,757 k lbs
Probable Sulphide 2,463,314 kt Molybdenum 0.021 % 1,145,013 k lbs
Indicated Sulphide 1,145,202 kt Copper 0.44 % 11,185,377 k lbs
Indicated Sulphide 1,145,202 kt Molybdenum 0.02 % 617,209 k lbs
Inferred ROM leach 3,969,128 kt Copper 0.09 % 7,856,975 k lbs
Inferred Sulphide 3,558,224 kt Copper 0.38 % 29,465,227 k lbs
Inferred Sulphide 3,558,224 kt Molybdenum 0.02 % 1,359,964 k lbs

Financials:

Units202120202019201820172016
Book Value M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,019   861   897.3  
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Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment as of December 31, 2021:
HME TypeModelQuantityStatus
Dozer ....................... Subscription required ....................... Subscription required Existing
Dozer ....................... Subscription required ....................... Subscription required Existing
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing
Drill ....................... Subscription required ....................... Subscription required Existing
Drill ....................... Subscription required ....................... Subscription required Existing
Drill ....................... Subscription required ....................... Subscription required Existing
Drill ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Drill ....................... Subscription required ....................... Subscription required Existing
Drill ....................... Subscription required ....................... Subscription required Existing
Drill ....................... Subscription required ....................... Subscription required Existing
Drill ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Excavator ....................... Subscription required ....................... Subscription required Existing
Excavator ....................... Subscription required ....................... Subscription required Existing
Grader ....................... Subscription required ....................... Subscription required Existing
Loader (FEL) ....................... Subscription required ....................... Subscription required Existing
Loader (FEL) ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Shovel ....................... Subscription required ....................... Subscription required Existing
Shovel ....................... Subscription required ....................... Subscription required Existing
Shovel ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Truck (haul) ....................... Subscription required ....................... Subscription required Existing
Truck (haul) ....................... Subscription required ....................... Subscription required Existing
Truck (haul) ....................... Subscription required ....................... Subscription required Existing
Truck (haul) ....................... Subscription required ....................... Subscription required Existing
Truck (haul) ....................... Subscription required ....................... Subscription required Existing
Truck (haul) ....................... Subscription required ....................... Subscription required Existing
Truck (haul) ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Truck (water) ....................... Subscription required ....................... Subscription required Existing
Truck (water) ....................... Subscription required ....................... Subscription required Existing
Truck (water) ....................... Subscription required ....................... Subscription required Existing
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2017
Form 10-K 2016
Form 10-K 2015
Form 10-K 2014
Other 2014
Form 10-K 2013
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