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Peru
Shahuindo Mine

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 Location:
29 km NW from Huamachuco, Peru

  Regional Office:
Ave. La Floresta 497 Of. 101 Charcarilla del Estanque, San Borja Lima 41
Lima
Peru
15037
Phone  ...  Subscription required
Fax+51-1-618-9729
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 TypeOpen Pit
Commodities
  • Gold
  • Silver
  • Silver Equivalent
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2032


Owners

Source: p. 42
CompanyInterestOwnership
Pan American Silver Corp. 100 % Indirect
Shahuindo S.A.C. (operator) 100 % Direct
Ownership Tree
The Shahuindo mine is 100% owned and operated by Pan American’s wholly owned subsidiary, Shahuindo S.A.C.

Contractors

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Deposit Type

  • Epithermal
  • Sediment-hosted


Summary:

The Property is located within a regional fold and thrust belt of predominantly Mesozoic sedimentary rocks intruded by felsic stocks located along faults and cores of anticlinal structures. Sedimentary rocks of Lower Cretaceous age consist of a lower, shallow marine-to-deltaic siliciclastic sequence and an upper sequence of finer grained siliciclastic units.

The oldest rocks on the Property are thinly bedded and laminated mudstones with occasional coal seams of the basal Lower Cretaceous Chicama Formation. This formation is only exposed in valleys and in the cores of anticlines.

Overlying the Chicama Formation is the Goyllarisquizga Group, which is comprised from oldest to youngest of the Chimu, Santa, Carhuaz, and Farrat Formations.

Multiple intrusions have intruded the Cretaceous sedimentary sequence at Shahuindo. Intrusions include rocks described as andesite, dacite porphyry, and intrusion breccia. Compositions vary from diorite porphyry (known as “andesite” in the district) to dacite porphyry, fine-grained dacite porphyry, quartz diorite porphyry, and foliated quartz diorite porphyry. The three intrusive breccia phases are heterolithic breccia with biotite diorite matrix, heterolithic breccia with fine-grained dacite matrix, and heterolithic megabreccia with foliated quartz-biotite dacite matrix.

Diorite porphyry (andesite) observed in the southeast part of the Property corridor formed as sills in the Goyllarisquizga Group sedi ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Shahuindo consists of an open pit mine and heap leach processing facility that is currently in production and has been operating since 2016. The open pit is being mined in a sequence of phased cutbacks. The mining method utilizes conventional drill and blast, loading of ore and waste is by diesel-powered 90 t excavators into 42 t and 46 t heavy duty highway rigid frame dump trucks. This type of truck is common in this style of operation in Peru. The ore and waste are hauled to the leach pad or waste dumps correspondingly.

Mining is based on an owner operator model, with operations managed and controlled by Pan American utilizing Pan American employees. Mining is carried out on two 12-hour shifts, operating 7 days a week.

The mine design utilizes 8 m benches which are suitable for the size of equipment employed and align with those used since 2016 which have delivered the dilution and ore loss outcomes used for this Mineral Reserve.

Grade control uses a mixture of blast hole drill samples and short RC holes that are drilled on a campaign basis.

Drilling and blasting utilize 156 mm diameter blast holes and powder factors of 0.20–0.25 kg/BCM using a bulk emulsion explosive. Drill penetration rates are consistent between ore and waste, and the deeper benches do not show any changes in the mechanical properties of the rock mass with only the oxide zone being mined (there are some local less oxidized zones that are easily distinguishable ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required847948
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20222021202020192017
Ore tonnes mined  ......  Subscription required  ......  Subscription required6,479 kt
Waste  ......  Subscription required  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required11,219 kt5,360 kt
Daily processing rate  ......  Subscription required  ......  Subscription required  ......  Subscription required36,000 t
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required1
Daily ore mining rate  ......  Subscription required  ......  Subscription required  ......  Subscription required17,800 t
Subscription required - Subscription is required.

Reserves at June 30, 2022:
The Mineral Reserves are based on a cut-off grade of ROM 1 Au cut-off grade = 0.04 g/t, FIRO Au cut-off grade = 0.26 g/t, ROM 2 Au cut-off grade = 0.18 g/t. Cut-off values are based on a gold price of $1,500/oz, silver price of $19/oz.
Mineral Resources estimates are based on ROM ore (ROM 1) Au cut-off grade = 0.032 g/t, fine ore in ROM (FIRO) Au cut-off grade = 0.207 g/t, Direct ore from ROM (ROM 2) Au cutoff grade = 0.159 g/t and metal prices: Au = $1,700/oz, Ag = $22/oz.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven & Probable Total 104.2 Mt Gold 0.47 g/t 1,575 koz
Proven & Probable Total 104.2 Mt Silver 7.2 g/t 24,171 koz
Measured Total 8.3 Mt Gold 0.29 g/t 77 koz
Measured Total 8.3 Mt Silver 5 g/t 1,279 koz
Indicated Total 13.2 Mt Gold 0.23 g/t 98 koz
Indicated Total 13.2 Mt Silver 4 g/t 1,800 koz
Measured & Indicated Total 21.6 Mt Gold 0.25 g/t 175 koz
Measured & Indicated Total 21.6 Mt Silver 4 g/t 3,079 koz
Inferred Total 14.6 Mt Gold 0.41 g/t 194 koz
Inferred Total 14.6 Mt Silver 8 g/t 3,724 koz

Commodity Production Costs:

CommodityUnits20222021202020192017
Cash costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
Total cash costs Gold USD 692 / oz  
Total cash costs Gold USD 668 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
All-in sustaining costs (AISC) Gold USD 1,124 / oz†  
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2017
OP mining costs ($/t milled) USD 3.36
Processing costs ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units202220212020201920172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 69.4   63.9  
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 22.2   11  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 95.4   47.2  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 30.1   12  
Subscription required - Subscription is required


Pipelines and Water Supply
Source: Subscription required

- subscription is required.


Heavy Mobile Equipment as of November 30, 2022:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Crane ....................... Subscription required ....................... Subscription required Existing Leased
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing Leased
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing Leased
Drill (blasthole) ....................... Subscription required 156 mm ....................... Subscription required Existing Leased
Excavator ....................... Subscription required ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Excavator ....................... Subscription required ....................... Subscription required Existing Leased
Grader ....................... Subscription required ....................... Subscription required Existing Leased
Loader (FEL) ....................... Subscription required ....................... Subscription required Existing Leased
Truck (dump) 42 t ....................... Subscription required Existing Leased
Truck (dump) 46 t ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Truck (fuel / lube) ....................... Subscription required Existing Leased
Truck (water) 400 gallons ....................... Subscription required Existing Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Annual Information Form 2022
Annual Report 2022
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Management Discussion & Analysis 2018
Press Release 2018
Annual Information Form 2017
Financial Review 2017
Management Discussion & Analysis 2017
Annual Information Form 2016
Feasibility Study Report 2016
Financial Review 2016
Management Discussion & Analysis 2016
Sustainability Report 2016
Annual Information Form 2015
Management Discussion & Analysis 2015
Feasibility Study Report 2012
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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