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Mexico
Fresnillo Mine

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 Location:
0 km S from Fresnillo, Zacatecas, Mexico

  Address:
Calzada Legaria, No. 549, Torre 2 Colonia 10 de abril
Fresnillo
Mexico, Mexico
11250
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Silver
  • Gold
  • Lead
  • Zinc
Mining Method
  • Bench & Fill
  • Cut & Fill
  • Backfill
Production Start...
Mine Life4.8 years (as of Jan 1, 2022)
Fresnillo is one of the world’s oldest continuously operating mines. In operation since 1554.


Owners

Source: p. 38,287
CompanyInterestOwnership
Fresnillo plc. 100 % Indirect
Fresnillo plc is the owner, with 100% ownership.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Manto
  • Sediment-hosted
  • Volcanic hosted


Summary:

The Fresnillo mine ore deposits consist of replacement chimney and manto bodies, disseminated sulfide bodies, and vein deposits hosted mainly in Cretaceous marine sedimentary and volcanic rocks.

The base metal-silver deposits are zoned to the southeast away from a small quartz monzonite stock, with increasing silver content and decreasing base metal values with distance from the stock. Wall rocks adjacent to the stock exhibit silicification and calc-silicate alteration that has been partially replaced by the sulfide minerals. Vein wall rocks exhibit potassic, phyllic, argillic, and propylitic alteration with increasing distance from the veins.Chimney and manto bodies contain pyrite, pyrrhotite, sphalerite, chalcopyrite, galena, tetrahedrite, marcasite, arsenopyrite, and silver minerals. Chimney and manto bodies predate or are contemporaneous with base metal veins containing a similar mineralogy. Younger silver-rich veins consist primarily of pyrargyrite with lesser acanthite, proustite, miargyrite, polybasite, tetrahedrite, galena, sphalerite, and chalcopyrite. Individual veins exhibit increasing silver and decreasing base metal concentrations with increasing elevation.


Mining Methods

  • Bench & Fill
  • Cut & Fill
  • Backfill


Summary:

Fresnillo one of the world’s oldest continuously operated underground mines. There are three types of veins Wide (> 3 mts), Medium (2-3 mts) and Narrow (< 2 mts) in Fresnillo. Bench & FIll and Cut & Fill methods are used for mining operations.


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityProductUnits2022202120202019201820172016
Silver Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required15,117,15616,511,93715,864,614
Gold Metal in concentrate oz  ......  Subscription required  ......  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  ......  Subscription required
Lead Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Equivalent Metal in concentrate M oz  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Daily milling rate  ......  Subscription required  ......  Subscription required6,976 t7,349 t7,292 t
Daily milling capacity  ......  Subscription required  ......  Subscription required8 kt8 kt8 kt8 kt
Annual milling capacity  ......  Subscription required  ......  Subscription required2,640 kt2,640 kt2,640 kt2,640 kt
Tonnes processed  ......  Subscription required  ......  Subscription required2,336,943 t2,461,785 t2,443,440 t2,447,394 t
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Reserves at May 31, 2022:
Mineral reserve cut-off grade is 298 g/t AgEq.

Mineral resource cut-off grade is 203 g/t AgEq.

CategoryTonnage CommodityGradeContained Metal
Probable 11,779 kt Silver 242 g/t 91,608 koz
Probable 11,779 kt Gold 0.77 g/t 291 koz
Probable 11,779 kt Lead 1.22 % 143 kt
Probable 11,779 kt Zinc 3.51 % 413 kt
Measured & Indicated 27,617 kt Silver 408 g/t 361,915 koz
Measured & Indicated 27,617 kt Gold 0.94 g/t 836 koz
Measured & Indicated 27,617 kt Lead 1.36 % 374 kt
Measured & Indicated 27,617 kt Zinc 3.45 % 952 kt
Inferred 31,359 kt Silver 342 g/t 344,827 koz
Inferred 31,359 kt Gold 0.79 g/t 795 koz
Inferred 31,359 kt Lead 1.19 % 373 kt
Inferred 31,359 kt Zinc 2.54 % 797 kt

Commodity Production Costs:

CommodityUnits202220212020201920182017
Cash costs Silver USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.5 / oz†   0.7 / oz†  
All-in sustaining costs (AISC) Silver USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 8.92 / oz†   8.2 / oz†  
† Net of By-Product.
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Operating Costs:

Units20222021202020192018201720162015
Total operating costs ($/t milled) USD 91.5  84.7  69.9  62.7  49.4  47.5  43.9  48.2  

Financials:

Units2022202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 121.1   111.7   52.8  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 378.3   421.3   382.7  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 211.5   252.2   224.2  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment as of December 31, 2019:
HME TypeQuantity
Drill (long hole) ....................... Subscription required
Jumbo ....................... Subscription required
Scoop Tram ....................... Subscription required
Truck (haul) ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 21, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 21, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 21, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 21, 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 Subscription required Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Annual Report 2016
Corporate Presentation 2016
Annual Report 2015
Annual Report 2014
Other 2014
Year-end Mineral Reserves 2014
Subscription required - Subscription is required.

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