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Argentina
Puna (Chinchillas) Mine

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 Location:
207 km NW from San Salvador de Jujuy, Argentina

  Address:
San Martin 116 - Piso #1
San Salvador de Jujuy
Argentina
4600
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  • Overview
  • Owners
  • Geology
  • Mining
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  • Production
  • Reserves
  • Costs & Financials
  • Fleet
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Silver
  • Lead
  • Zinc
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life5 years (as of Jan 1, 2021)
Puna is comprised of the Chinchillas mine and the Pirquitas property, which includes the Pirquitas processing facilities.

The Pirquitas processing facilities have been in commercial production since 2009, processing ore from the San Miguel open pit, which concluded mining activities in January 2017 and currently hosts the tailings deposit facility.

Puna were placed into care and maintenance near the end of the first quarter of 2020 and subsequently restarted through the second and third quarters of 2020.


Owners

Source: p. 16
CompanyInterestOwnership
SSR Mining Inc. 100 % Indirect
Mina Pirquitas S. A. (operator) 100 % Direct
Puna is directly owned (100%) by SSR Mining Inc. through a subsidiary company Puna Operations Inc. which through other 100% owned subsidiaries owns Mina Pirquitas S.A. (MPSA). MPSA operates the project.

Contractors

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Deposit Type

  • Volcanic hosted
  • Vein / narrow vein


Summary:

The Chinchillas and Pirquitas deposits are within the Bolivian tin-silver-zinc belt which occupies the back-arc portion of the central Andes and extends from the San Rafael tin-copper deposit in southern Peru to northern Argentina. The Bolivian tin-silver deposits are typically associated with felsic volcanic domes of broadly rhyodacitic composition (Cunningham et al., 1991). Bolivian-type Ag-Sn deposits generally consist of sulphide and quartz-sulphide vein systems typically containing cassiterite and a diverse suite of base and trace metals, including Ag in a complex assemblage of sulphide and sulfosalt minerals. The vein systems are generally spatially and likely genetically associated with epizonal (subvolcanic) quartz-bearing peraluminous intrusions one to two kilometres in diameter, although the mineralisation may be entirely hosted by the country rocks into which the intrusive stocks were emplaced. The Chinchillas deposit is modelled as a Tertiary-aged diatreme volcanic centre that has intruded Paleozoic sedimentary basement rocks. The mineralisation occurs mostly as disseminations, veinlets, and matrix fill.

Most of these deposits are characterised by the intrusion of dacite dome complexes with mineralisation hosted in shear zones and breccia within the dacite domes and/or within shear zones and breccia within the host rocks. At Pulacayo, Potosí and San Cristóbal, where associated domes are present, there is significant mineralisation within the domes. More ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Open pit mining is carried out by MPSA as an owner mining operation with ore hauled from Chinchillas pit to the Pirquitas plant.

The Chinchillas deposit is located in the high lands of the Andes. The topography of the property consists of several mountains and hills on the sides of property with a small valley in the middle. The orebody is located mainly in the bottom of the valley with extensions stretching to the west on the hillside. The elevation varies from about 4,090 masl in the east side of the valley to 4,300 masl on the peaks in the west. There is a small creek in the middle of valley running from west to the east.

The Chinchillas deposit is mined as a conventional open pit operation. Most of the in-pit haulage for both ore and waste is carried out using 100 t haulage trucks. Ore is mined in five metre benches and stockpiled in a staging area close to the pit. From the staging area, ore is transported to the crusher at the Pirquitas Operation which is 42 km away from Chinchillas. Throughout the mining operation, low grade ore is stockpiled near the pit rim to be processed at the end of mine life. The mining operation is conducted by the owner. Ore haulage was changed to owner operated in 2021.

Waste rock is mined and hauled to two major on-site rock storage facilities based on geochemical characteristics. For the mine planning work the NSR is calculated for each block. No dilution is included in the block model. Ore is placed in the ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits20222021202020192018
Silver koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required3,747
Lead k lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc k lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.
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Operational Metrics:

Metrics2021202020192018
Total tonnes mined  ......  Subscription required  ......  Subscription required12,282 kt897 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required
Waste  ......  Subscription required  ......  Subscription required10,839 kt696 kt
Tonnes milled  ......  Subscription required  ......  Subscription required1,394 kt1,420 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required7.5 3.5
Daily milling rate  ......  Subscription required  ......  Subscription required3,819 t3,890 t
Daily milling capacity  ......  Subscription required  ......  Subscription required5,000 t
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Reserves at December 31, 2021:
The Mineral Reserves estimate is reported at a cut-off grade of $44.11/t NSR.
The Mineral Resource estimate is contained within underground mining shapes based on $90/t to $100/t NSR cut-off.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 7,606 kt Silver 159.2 g/t 38,938 koz
Proven & Probable 7,606 kt Lead 1.3 % 218,595 k lbs
Proven & Probable 7,606 kt Zinc 0.28 % 47,675 k lbs
Measured 79 kt Silver 444.5 g/t 1,129 koz
Measured 79 kt Lead 0.2 % 0.4 M lbs
Measured 79 kt Zinc 1.17 % 2 M lbs
Indicated 2,555 kt Silver 287.7 g/t 23,627 koz
Indicated 2,555 kt Lead 0.2 % 1 M lbs
Indicated 2,555 kt Zinc 4.56 % 257 M lbs
Measured & Indicated 2,634 kt Silver 292.4 g/t 24,756 koz
Measured & Indicated 2,634 kt Lead 0.2 % 1.5 M lbs
Measured & Indicated 2,634 kt Zinc 4.46 % 259 M lbs
Inferred 1,080 kt Silver 206.9 g/t 7,185 koz
Inferred 1,080 kt Lead 0 % 0.1 M lbs
Inferred 1,080 kt Zinc 7.45 % 177 M lbs

Commodity Production Costs:

CommodityUnits20222021202020192018
Cash costs (sold) Silver USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 15.9 / oz†  
All-in sustaining costs (sold) Silver USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 19.3 / oz†  
^ Guidance / Forecast.
† Net of By-Product.
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Operating Costs:

Units20192018
OP mining costs ($/t mined) USD 2.62.61
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required
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Financials:

Units2021202020192018
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 9.7  
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 54.7  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -8.5  
Gross profit M USD 79  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required -9.1  
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Heavy Mobile Equipment as of December 31, 2021:
HME TypeModelSizeQuantity
Dozer ....................... Subscription required
Drill ....................... Subscription required
Drill (blasthole) ....................... Subscription required
Grader
Loader 12 cu. m
Truck (haul) 100 t
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 2, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... 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 2019
................................... Subscription required 2019
................................... Subscription required 2019
Corporate Presentation 2018
Financial Review 2018
Management Discussion & Analysis 2018
Annual Information Form 2017
Financial Review 2017
Management Discussion & Analysis 2017
Pre-Feasibility Study Report 2016
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