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Peru
Caylloma Mine

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 Location:
66 km SE from Espinar, Peru

  Regional Office:
Av. Jorge Chavez 154, piso 5, Miraflores
Lima
Peru
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  • Overview
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  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Silver
  • Gold
  • Lead
  • Zinc
Mining Method
  • Cut & Fill
  • Mechanized Cut & Fill
  • Hydraulic backfill
Mine Life5 years (as of Jan 1, 2022)
Caylloma is an underground silver, lead, and zinc mine. In 2022, Caylloma delivered higher annual silver and lead production due to higher throughput and head grades.


Owners

Source: p. 14,45
CompanyInterestOwnership
Fortuna Silver Mines Inc. 100 % Indirect
Since June 2005, the Caylloma Property has been 100 percent owned by Minera Bateas S.A.C., a Peruvian subsidiary of Fortuna Silver Mines Inc.

Contractors

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Deposit Type

  • Epithermal
  • Vein / narrow vein


Summary:

The Caylloma polymetallic and silver-gold rich veins are characteristic of a typical low sulfidation epithermal deposit according to the classification of Corbett (2002) having formed in a relatively low temperature, shallow crustal environment. The epithermal veins in the Caylloma District are characterized by minerals such as pyrite, sphalerite, galena, chalcopyrite, marcasite, native gold, stibnite, argentopyrite, and various silver sulfosalts (tetrahedrite, polybasite, pyrargyrite, stephanite, stromeyerite, jalpite, miargyrite and bournonite). These are accompanied by gangue minerals such as quartz, rhodonite, rhodochrosite, johannsenite (Mn-pyroxene) and calcite.

Veins in the Caylloma District show structural patterns and controls typical of other vein systems hosted by Tertiary volcanic rocks in the western Peruvian Andean range. The Caylloma District vein system was developed as a set of dilatational structures as a consequence of tension generated during the main compressional event of the Andes. Veins are persistent along strike and dip. Locally, veins are displaced by post-mineral faulting along a north-northwest bearing. Horizontal displacement along these faults is minor and ranges from centimeters up to a few meters. No significant vertical displacement is observed on the structures. The vein system is not affected by any folding.

Three types of hydrothermal alteration have been identified at the Caylloma Mine: (1) quartz- adularia; (2) ........


Mining Methods

  • Cut & Fill
  • Mechanized Cut & Fill
  • Hydraulic backfill


Summary:

The mining method applied in the exploitation of the main vein (Animas) is overhand cut-and-fill using either mechanized, semi-mechanized or conventional extraction methods. All mining is undertaken by contractors in a southwest to northeast direction following the strike of the vein. Production capacity at the mine is 1,500 tpd. The following describes the cut-and-fill mechanized, semi-mechanized, and conventional extraction methods.

Mechanized cut-and-fill
Mechanized mining uses a jumbo drill rig and scoop tram for loading. The ore haulage is performed by trucks. Rock support is applied through rock bolts and shotcrete. The average mining width ranges between 3.5 m and 17 m. Mechanized mining is regarded as only being suitable for the Animas, Animas NE and their associated splays, as well as the Nancy vein based on the geological structure and geotechnical studies. Mechanized cut-and-fill comprises 93 % of mining planned in the LOM.

The mechanized mining sequence includes: drilling (with a jumbo drill rig), blasting, support, loading (with a scoop tram) and haulage.

Semi-mechanized cut-and-fill
Semi-mechanized mining is performed using handheld drilling equipment (jacklegs) and scoops for loading. Ore haulage is performed by truck. Rock support is supplied using rock bolts installed using manual drilling and installation techniques. Semi-mechanized mining is applied to narrow veins with average widths between 0.8 m and 2.0 m.
........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.

^ Guidance / Forecast.

Production:

CommodityProductUnits2023202220212020201920182017
Silver Metal in concentrate koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required911943
Lead Metal in concentrate M lbs  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Metal in concentrate M lbs  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Equivalent Payable metal oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Concentrate kt
Zinc Concentrate kt
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required531,307 t534,773 t529,704 t
Daily milling rate  ......  Subscription required  ......  Subscription required  ......  Subscription required1,488 t1,502 t1,484 t
Daily mining capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required1,430 t of ore1,430 t of ore
Daily milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required1,500 t1,500 t1,500 t
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at December 31, 2022:
Mineral Reserves for the Caylloma Mine are reported above NSR breakeven cut-off values based on underground mining methods including; mechanized (breasting) at US$86.60/t; mechanized (uppers) at US$77.33/t; semi-mechanized at US$90.19/t; and a conventional method at US$155.09/t; using assumed metal prices of US$21/oz Ag, US$1,600/oz Au, US$2,100/t Pb and US$2,600/t Zn; metallurgical recovery rates of 82% for Ag, 45% for Au, 88% for Pb and 89% for Zn.

Mineral Resources are reported at an NSR cut-off grade of US$65/t for veins classified as wide (Animas, Animas NE, Nancy, San Cristobal) and US$135/t for veins classified as narrow (all other veins) based on the same parameters used for Mineral Reserves, and a 15% upside in metal prices.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 3,198 kt Silver 81 g/t 8.3 M oz
Proven & Probable 3,198 kt Gold 0.15 g/t 15 koz
Proven & Probable 3,198 kt Lead 2.66 %
Proven & Probable 3,198 kt Zinc 3.88 %
Measured & Indicated 2,839 kt Silver 80 g/t 7.3 M oz
Measured & Indicated 2,839 kt Gold 0.24 g/t 22 koz
Measured & Indicated 2,839 kt Lead 1.64 %
Measured & Indicated 2,839 kt Zinc 3.08 %
Inferred 5,003 kt Silver 105 g/t 16.9 M oz
Inferred 5,003 kt Gold 0.45 g/t 72 koz
Inferred 5,003 kt Lead 2.23 %
Inferred 5,003 kt Zinc 3.42 %

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Total cash costs (sold) Silver Equivalent USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required
Total cash costs Silver Equivalent USD  ......  Subscription required  ......  Subscription required 7.64 / oz   7.73 / oz  
Total cash costs Silver USD -35.38 / oz†   -34.56 / oz†  
All-in sustaining costs (sold) Silver Equivalent USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Silver Equivalent USD  ......  Subscription required  ......  Subscription required 11.7 / oz   11.2 / oz  
All-in sustaining costs (AISC) Silver USD -13.04 / oz†  
All-in costs Silver Equivalent USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 11.7 / oz   11.2 / oz  
All-in costs Silver USD -13.04 / oz†  
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units20222021202020192018201720162015
UG mining costs ($/t milled) USD 39.434.73841.341.440.435.3
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 14.7   9.6  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 16.4   11.7  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 89.1   88.1  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 22.9   62.4  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 29.2   57.8  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 18.5   40.6  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 37   39  
Subscription required - Subscription is required


Water Supply
Source: Subscription required

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Proposed Heavy Mobile Equipment as of March 8, 2019:
HME TypeModelSizeQuantity
Bolter ....................... Subscription required
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Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 22, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 17, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
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

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Press Release 2023
Year-end Mineral Reserves 2023
Corporate Presentation 2022
Financial Review 2022
Management Discussion & Analysis 2022
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
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................................... Subscription required 2021
................................... Subscription required 2020
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................................... Subscription required 2019
................................... Subscription required 2019
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................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Management Discussion & Analysis 2018
Press Release 2018
Press Release 2018
Sustainability Report 2018
Corporate Presentation 2017
Financial Review 2017
Management Discussion & Analysis 2017
Technical Report 2017
Form 40-F 2016
Management Discussion & Analysis 2016
Management Discussion & Analysis 2014
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