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Peru
San Cristobal Mine (Yauli Operation)

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 Location:
27 km E from San Mateo, Peru

  Regional Office:
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
  • Sub-level stoping
Production Start...
Mine Life7 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 economic interest of 23%, excluding treasury shares.

Contractors

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Deposit Type

  • Manto
  • Vein / narrow vein
  • Epithermal


Summary:

There are two types of deposits in the San Cristobal district, veins and mantoso Veins are roughly perpendicular to the axis of the Chumpe Anticline and mantos are emplaced along the Mitu volcanic rocks-Paria limestone contact.

The San Cristobal Vein system is made up of two main mineral-bearing structures, the San Cristobal Main Vein and the Siberia 1 Vein, The Oyama-Triunfo Vein, which is located on the northeast limb of the anticline, appears to be an extension of the San Cristobal Main Vein, Both veins are separated on the surface by Chumpe lake and no underground workings exist below the area that permit a clear correlation.

The San Cristobal Main Vein extends all the way along the San Cristobal fault, considering the Oyama-Triunfo Vein as its extension. The Siberia 1 Vein is located in the axial zone of the anticline# At present the San Cristobal mine is working in the San Cristobal Main Vein. This vein is well known underground and carries zinc, lead, copper, and silver minerals and locally tungsten minerals. The Siberia 1 Vein is little known in underground workings and carries mainly tungsten mineralization.


Mining Methods

  • Sub-level stoping


Summary:

(Translated from Spanish by Google Translate)
San Cristobal is an underground mine, a part of Yauli unit.

There was a 1% increase in the Zn head grade. However, the law was reduced head of the other metals: 7% in Pb, 9% in Cu, 8% in Ag, due to the delays in the primary developments of 2020 as a consequence of covid-19, which caused the pits scheduled for 2021 had a lag in their exploitation, mainly in the Split 658 vein, the main contributor in volume and grade.

Ore production was 48% higher than in 2020, the results of production of fines in zinc, lead and silver were above in relation to 2020 in 53%, 38% and 36%, respectively.

Sub-level stoping is utilized as a primary mining method.

Exploration was directed towards the lateral areas of the Ramal Piso 722 veins, vein 658 and Split 658 vein at levels 820, 1320 and 1420, with favorable results.


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:

CommodityUnits202120202019201820172016
Zinc t  ......  Subscription required  ......  Subscription required  ......  Subscription required000
Lead t  ......  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
Silver oz  ......  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 required1,191 kt1.1 Mt
Tonnes processed  ......  Subscription required  ......  Subscription required1,191 kt1,098 kt1,161 kt1,175 kt
Daily mining capacity  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage CommodityGrade
Proven & Probable 10.1 Mt Zinc 4.9 %
Proven & Probable 10.1 Mt Lead 0.8 %
Proven & Probable 10.1 Mt Copper 0.1 %
Proven & Probable 10.1 Mt Silver 3 oz/t
Measured & Indicated 19.8 Mt Zinc 6.5 %
Measured & Indicated 19.8 Mt Lead 1.1 %
Measured & Indicated 19.8 Mt Copper 0.2 %
Measured & Indicated 19.8 Mt Silver 4.1 oz/t
Inferred 14.8 Mt Zinc 5.3 %
Inferred 14.8 Mt Lead 0.9 %
Inferred 14.8 Mt Copper 0.2 %
Inferred 14.8 Mt Silver 3.3 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 12, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... 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
Other 1970
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