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Peru
Carahuacra Mine (Yauli Operation)

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 Location:
25 km E from San Mateo, Peru

  Address:
Av. Manuel Olguín 373, Santiago de Surco
Lima
Peru
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
  • Copper
  • Silver
Mining Method
  • Overhand Cut & Fill
  • Hydraulic backfill
Production Start...
Mine Life3 years (as of Jan 1, 2021)


Owners

Source: p. 7, 8, 42
CompanyInterestOwnership
Glencore plc. 23.3 % Indirect
Volcan Compañía Minera S.A.A. is a subsidiary of Glencore AG, which is a subsidiary of Glencore Plc., a company domiciled in Switzerland, hereinafter the Parent, owner of 63% of common class A voting shares and an economic interest of 23.29%, excluding treasury shares.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Epithermal
  • Skarn
  • Manto


Summary:

The Yauli dome is located 100km east of Lima, Peru. The southern portion of the dome is where Andaychagua, Carahuacra, San Cristobal and Ticlio are located, and is made up of mantos and vein-type deposits. The mantos are hosted by the Pucara limestone, while the veins are steeply dipping and cross-cut rocks of the Mitu and Excelsior groups, as well as the Chumpe and San Cristobal intrusions.


Mining Methods

  • Overhand Cut & Fill
  • Hydraulic backfill


Summary:

(Translated from Spanish by Google Translate)
Carahuacra underground Mine is a part of Yauli unit.

There was an increase in the head grades of silver and lead by 25% and 4%, respectively. However, zinc and copper head grades decreased by 20% and 3%, respectively. The programmed laws were not reached due to the delays in the primary and secondary developments of 2020, product of the impact of the covid-19.

The volume of production contribution was 23% higher than in 2020, due to the contribution of the veins in the main mantle systems, Lourdes, Fátima, Susana and Mary's part. The results of production of fines in zinc, lead and silver were above 2020 by 1%, 29% and 63%, respectively.

In this area, mining is consolidated using the OCF method utilizing Hydraulic backfill.

Seismic events occurred in the Mary vein, which paralyzed its production contribution for a period of three months. In this period the cable installation was implemented bolting and additional support to secure the mine with a greater safety factor.

Diamond drilling exploration was directed towards mantle systems main, Mary, Lourdes, Susana, Manto Poderosa, Fátima and Jazmín vein in the levels 870, 920, 970, 1070, 1180, 1220, 1360. Likewise, on the surface the vein Kindness, where it was possible to recategorize indicated resources to measured ones.


Crushing and Grinding

Andaychagua's processing plant include grinding circuit consist of primary ball mills #1, 2 (10.5 'x 14', 8 'x 10') and secondary grinding ball mill (7’ x 12’).


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2021202020192018201720162015
Zinc t  ......  Subscription required  ......  Subscription required  ......  Subscription required0000
Lead t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required764 kt857 kt
Tonnes processed  ......  Subscription required  ......  Subscription required764 kt857 kt950 kt805 kt
Daily mining capacity  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage CommodityGrade
Proven & Probable 1.3 Mt Zinc 5.2 %
Proven & Probable 1.3 Mt Lead 1.1 %
Proven & Probable 1.3 Mt Copper 0.1 %
Proven & Probable 1.3 Mt Silver 3.3 oz/t
Measured & Indicated 6.4 Mt Zinc 5.8 %
Measured & Indicated 6.4 Mt Lead 0.9 %
Measured & Indicated 6.4 Mt Copper 0.1 %
Measured & Indicated 6.4 Mt Silver 2.9 oz/t
Inferred 4.4 Mt Zinc 6.2 %
Inferred 4.4 Mt Lead 1.1 %
Inferred 4.4 Mt Copper 0.1 %
Inferred 4.4 Mt Silver 3.6 oz/t



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 7, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 7, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 7, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Annual Report 2014
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