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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 OlguĂ­n 373, Santiago de Surco
Lima
Peru
Phone  ...  Subscription required
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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
  • Hydraulic backfill
Processing
  • Flotation
Mine Life14 years (as of Jan 1, 2019)


Owners

Source: p. 33
CompanyInterestOwnership
Volcan Compania Minera S.A.A. 100 % Indirect
Glencore has an economic interest in Volcan Compania Minera S.A.A. of 23.3%.

Deposit Type

  • Vein / narrow vein
  • Manto


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
  • Hydraulic backfill


Summary:

During 2019, the head grades increased by 0.45% and 8.31% in Zn and Ag respectively as a consequence of an operational management of dilution control in the Split 658, RP722 and Sheyla veins. The implementation of the sub level stoping mining method was consolidated in all veins.

Exploration was directed to the Split 658 and RP722 veins with favorable results in Zn and Ag, mainly in the upper and lateral part of the mine.

The infrastructure of the 1st stage of the electrical system in 10,000 volts for the deepening circuits was completed, guaranteeing an installed power of two MW.

The production of tons of mineral in 2019 was above 8.42%, the production results of fines in Zn and Ag were above 2018 by 7.61% and 19.69% respectively.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required


Combined production numbers are reported under Yauli Operation

Operational Metrics:

Metrics201920182017201620152014
Ore tonnes mined  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required1,175 kt1,555 kt1,532 kt
Daily mining capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required4,300 t of ore
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGrade
Proven & Probable 12.2 Mt Zinc 5.3 %
Proven & Probable 12.2 Mt Lead 1 %
Proven & Probable 12.2 Mt Copper 0.2 %
Proven & Probable 12.2 Mt Silver 3.9 oz/t
Measured & Indicated 23.5 Mt Zinc 6.7 %
Measured & Indicated 23.5 Mt Lead 1.2 %
Measured & Indicated 23.5 Mt Copper 0.3 %
Measured & Indicated 23.5 Mt Silver 4.7 oz/t
Inferred 16.2 Mt Zinc 5.6 %
Inferred 16.2 Mt Lead 1 %
Inferred 16.2 Mt Copper 0.2 %
Inferred 16.2 Mt Silver 3.5 oz/t


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 7, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 7, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 7, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Annual Report 2014
Other 1970
Subscription required - Subscription is required.

Aerial view:

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