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Chile
El Penon Mine

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 Location:
125 km SE from Antofagasta, Chile

  Address:
Ruta Panamericana Norte, km 1258.
Chile
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  • Overview
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  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Bench & Fill
  • Cut & Fill
  • Longhole stoping
  • Cemented backfill
Production Start...
Mine Life10 years (as of Jan 1, 2021)
Ore from underground mines have recently been—and will continue to be—the main source of feed for the El Peñón mill. Currently, ore is sourced from one small active open pit mine (Chiquilla Chica) and from five of the seven major underground mining zones.


Owners

Source: p. 13
CompanyInterestOwnership
Yamana Gold Inc. 100 % Indirect
Minera Meridian Ltda. (operator) 100 % Direct
Ownership Tree
The El Peñón Mine is owned by Yamana through its wholly- owned subsidiary Minera Meridian Ltda.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Epithermal


Summary:

El Peñón is classified as a low- to intermediate-sulphidation epithermal gold-silver deposit associated with steeply dipping fault-controlled veins emplaced following rhyolite dome emplacement. Gold and silver mineralization consists of disseminations of electrum, native gold and silver, acanthite, silver sulphosalts, halides, and accessory pyrite occurring with quartz, adularia, carbonates, and clay minerals (Pearson and Rennie, 2008). Epithermal deposits represent shallow parts of larger, mainly subaerial, hydrothermal systems formed at temperatures as high as about 300°C and at depths from about 50 to as much as 1,500 m below the water table (John et al., 2010).

The gold-silver mineralization at El Peñón is hosted in near-horizontal to gently dipping Paleocene to Eocene basaltic to rhyolitic volcanic rocks. The El Peñón deposit comprises many individual tabular and steeply dipping zones that are amenable to mining by both underground and surface methods. Vein thickness range from decimetre-scale to more than 20 metres. The strike length of individual mineralized zones ranges from less than 1 km to 4 km and the downdip extent reaches up to 350 m.

The known deposit consists of 19 main vein zones and many subsidiary veins. They are grouped in vein systems that have previously supported, currently support, or are planned to support surface and underground mining operations.

The 19 principal mineralized veins are listed as follows:
Abundan ........


Mining Methods

  • Truck & Shovel / Loader
  • Bench & Fill
  • Cut & Fill
  • Longhole stoping
  • Cemented backfill


Summary:

Ore from underground mines have recently been - and will continue to be - the main source of feed for the El Peñón mill. All underground mining operations are carried out by Yamana, while the open pit mining operations, representing only a very small proportion of the production over the LOM, are carried out by a contractor.

The El Peñón mine (El Peñón) is an underground and open-pit gold-silver mine located in the Atacama Region of Chile, approximately 165 km southeast of the city of Antofagasta.

The major assets and facilities associated with the mining operations at El Peñón are
listed as follows:
• Mine and mill infrastructure including office buildings, shops, laboratories, stockpiles, tailing storage facility, and equipment.
• Campsite/housing facilities
• Facilities providing basic infrastructure to the mine, such as access roads, electric power distribution systems connected to national power grid, water treatment and supply and sewage treatment.
• Underground infrastructure including portals, access ramps, ventilation raises, maintenance shops, and mobile fleet equipment.
• The open-pit infrastructure including haulage roads, ramps, and mobile fleet equipment.

Ore from underground mines have recently been—and will continue to be—the main source of feed for the El Peñón mill. Ore is sourced from one small active open pit mine (Chiquilla Chica) and from five of the seven major underground mining zones.


Crushing and Grinding
Source: Subscription required

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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required152161220
Silver koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Equivalent koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,010,081 t975,379 t1,018,007 t1,302,998 t
Tonnes processed  ......  Subscription required  ......  Subscription required1,290,239 t1,103,835 t1,041,200 t1,421,241 t
Daily processing capacity  ......  Subscription required  ......  Subscription required4,350 t4,350 t
Daily processing rate  ......  Subscription required  ......  Subscription required3,535 t3,024 t
Annual processing capacity  ......  Subscription required  ......  Subscription required1.59 Mt1.59 Mt
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Reserves at December 31, 2021:
Mineral Reserves: Open Pit cut-off at $48.27/t, Underground cut-off at $129.15/t, Low grade stockpiles cut-off 0.86 g/t gold equivalent.
Mineral Resources: Underground cut-off at $96.86/t, Tailings and stockpiles reported at cut-offs of 0.50 g/t and 0.79 g/t gold equivalent respectively.

CategoryTonnage CommodityGradeContained Metal
Proven 429 kt Gold 6.62 g/t 91 koz
Proven 429 kt Silver 224 g/t 3,090 koz
Probable 5,603 kt Gold 4.67 g/t 841 koz
Probable 5,603 kt Silver 146 g/t 26,293 koz
Proven & Probable 6,032 kt Gold 4.81 g/t 933 koz
Proven & Probable 6,032 kt Silver 151.5 g/t 29,383 koz
Measured 761 kt Gold 5.28 g/t 129 koz
Measured 761 kt Silver 150.9 g/t 3,691 koz
Indicated 6,670 kt Gold 2.88 g/t 618 koz
Indicated 6,670 kt Silver 100.6 g/t 21,568 koz
Measured & Indicated 7,430 kt Gold 3.13 g/t 748 koz
Measured & Indicated 7,430 kt Silver 105.7 g/t 25,259 koz
Inferred 18,882 kt Gold 1.45 g/t 881 koz
Inferred 18,882 kt Silver 47.7 g/t 28,984 koz

Commodity Production Costs:

CommodityUnits2022202120202019201820172016
Cash costs (sold) Gold Equivalent USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required  ......  Subscription required 851 / oz  
Cash costs Silver USD 10.4 / oz   10.3 / oz   9.14 / oz  
Cash costs Gold USD 833 / oz   751 / oz   678 / oz  
All-in sustaining costs (sold) Gold Equivalent USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,117 / oz  
All-in sustaining costs (AISC) Silver USD 12.5 / oz   12.8 / oz   12 / oz  
All-in sustaining costs (AISC) Gold USD 995 / oz   928 / oz   893 / oz  
^ Guidance / Forecast.
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 31.8   38.5   60.4  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 50.8   56.3   88.4  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 253.6   274   380.8  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -10.3   38.6   -529.5  
Subscription required - Subscription is required



Heavy Mobile Equipment as of December 31, 2020:
HME TypeModelSizeQuantity
Backhoe ....................... Subscription required ....................... Subscription required
Bolter ....................... Subscription required ....................... Subscription required
Bolter ....................... Subscription required ....................... Subscription required
Drill (long hole) ....................... Subscription required ....................... Subscription required
Drill (long hole) ....................... Subscription required ....................... Subscription required
Drill (long hole) ....................... Subscription required ....................... Subscription required
Drill jumbo (two boom) ....................... Subscription required ....................... Subscription required
Drill jumbo (two boom) ....................... Subscription required ....................... Subscription required
Drill jumbo (two boom) ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required 6 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required 6 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required 2 cu. yd ....................... Subscription required
Scissor Lift ....................... Subscription required ....................... Subscription required
Shotcreter ....................... Subscription required ....................... Subscription required
Shotcreter ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (service) ....................... Subscription required
Truck (underground) ....................... Subscription required ....................... Subscription required
Truck (water) ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Mar 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 30, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Corporate Presentation 2018
Press Release 2018
Technical Report 2018
Corporate Presentation 2017
Financial Review 2017
Management Discussion & Analysis 2017
Annual Report 2016
Annual Report 2015
Technical Report 2011
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