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Peru
Julcani Mine

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 Location:
67 km NW from Ayacucho, Peru

  Address:
Las Begonias 415, 19th Floor, San Isidro
Lima
Peru
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
  • Lead
  • Copper
Mining Method
  • Overhand Cut & Fill
Production Start...
Mine Life2 years (as of Jan 1, 2022)
After 11 days of production stoppage, Buenaventura announced the restart of production at the Julcani mine as of December 27, 2022. Operations normalized after the cease of blockades near the entry of the affected mining units.

The Julcani operations were suspended in February 2023 due to anti-government protests. However, operations were fully reestablished on February 16, 2023.

Acchilla is the main mining area.


Owners

Source: p. 41
CompanyInterestOwnership
Compania de Minas Buenaventura S.A.A. (operator) 100 % Indirect
The Julcani mine is wholly-owned and operated by Compania de Minas Buenaventura S.A.A.

Contractors

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Deposit Type

  • Epithermal
  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

Julcani is a large polymetallic deposit in Central Peru, which principally produces silver that presents mainly as sulpho-salts in many mineralogically complex veins. They are hosted in dacite domes, tuffs, breccias and other tertiary volcanic rocks. Julcani is a fracture-filling silver-bearing epithermal deposit with Ag-Pb-Bi-Cu-WO3 mineralization, hosted in a complex of dacitic/rhyolitic domes from the Tertiary. The most important system of structures runs NW-SE, followed by E-W and NE-SW. It is important to note the zoning, wherein the central part (Tentadora dome) exhibits an Au-Bi-WO3 ensemble that changes to Ag- Pb toward the edges. Historically, the most important mines have been Herminia, Nueva Herminia, Mimosa, and Manto. The Acchilla and Estela Mines are currently in operation. The minerals present include tetrahedrite, argentite, silver sulfosalts, galena, sphalerite, and chalcopyrite, with gangues of siderite, pyrite, barite, silica, and calcite.


Mining Methods

  • Overhand Cut & Fill


Summary:

Over the course of its history, it has had several areas of exploitation. Operations are currently underway at Acchilla and Estela, where there are eight levels, with the highest being 420 and the lowest being 710. The shafts are located in Acchilla. Exploitation is carried out using the conventional overhand cut and fill method. The waste is recirculated to the pits, and the excess material is transported to the barren material deposits on the surface. Mine water drainage is performed using pumping stations located near shafts 487 and 993, with maximum flow volumes of 120 l/s. There is an acid water treatment plant at Acchilla, with a capacity of 180 l/s. The mining method used in this operation is cut and fill, for which the primary equipment employed are pneumatic shovels, and locomotives. The mine is currently deepening the mine at level 710 operating with synergistic equipment such as electric shovels, jumbo jets and battery powered locomotives.


Crushing and Grinding
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Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityProductUnits2023202220212020201920182017
Silver Metal in concentrate koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required2,4832,250
Gold Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead-Silver Concentrate kt  ......  Subscription required
^ Guidance / Forecast.
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Operational Metrics:

Metrics202220212020201920182017
Daily milling capacity  ......  Subscription required  ......  Subscription required585 t550 t550 t
Tonnes milled  ......  Subscription required  ......  Subscription required71,943 t123,818 t109,025 t130,854 t
Ore tonnes mined  ......  Subscription required  ......  Subscription required71,943 t123,818 t109,025 t130,854 t
Subscription required - Subscription is required.

Reserves at December 31, 2022:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 303 kt Gold 0.008 oz/t 2 koz
Proven & Probable 303 kt Silver 19.96 oz/t 6,045 koz
Proven & Probable 303 kt Lead 1.66 % 5 kt
Proven & Probable 303 kt Copper 0.52 % 2 kt
Measured & Indicated 139 kt Gold 0.01 oz/t 1 koz
Measured & Indicated 139 kt Silver 21.01 oz/t 2,925 koz
Measured & Indicated 139 kt Lead 0.63 % 1 kt
Measured & Indicated 139 kt Copper 0.47 % 1 kt

Commodity Production Costs:

CommodityUnits202220212020201920182017
Cash costs (sold) Lead USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 2,191 / t   2,543 / t  
Cash costs (sold) Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 7,392 / t   6,318 / t  
Cash costs (sold) Silver USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 15 / oz   17.1 / oz  
Cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 2,507 / oz  
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 3   2   0.8  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 34.1  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -7.7  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -4.7   -9.9   12.8  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -7.8   -15.4   6.7  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -7.8  
Book Value M USD  ......  Subscription required
Subscription required - Subscription is required


Water Supply
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required 2017
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Quarterly Report 2023
Annual Report 2022
Corporate Presentation 2022
Form 20-F 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Form 20-F 2018
Press Release 2018
Press Release 2018
Quarterly Report 2018
Form 20-F 2017
Annual Report 2016
Form 20-F 2016
Press Release 2016
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