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Peru
Cerro Lindo Mine

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 Location:
162 km SE from Lima, Peru

  Regional Office:
Av. Circunvalación del Golf los Incas 170 Santiago de Surco
Lima
Peru
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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
  • Zinc
  • Lead
  • Copper
  • Silver
  • Gold
Mining Method
  • Cut & Fill
  • Sub-level stoping
  • Longhole stoping
  • Paste backfill
Production Start...
Mine Life2029
Latest NewsNEXA Provides Update on Cerro Lindo Mine Operation     March 28, 2023


Owners

Source: p. 9, 30, 37
CompanyInterestOwnership
Nexa Resources S.A. 83.48 % Indirect
Cerro Lindo mine is an underground mine located in Peru wholly-owned by Nexa Resources Perú S.A.A. (Nexa Peru).

Nexa Resources S.A. owns a total of 83.48% in the Mine that corresponds to the sum of Nexa’s direct interest in Nexa Perú (0.17%) and Nexa’s indirect interest in Nexa Perú (83.38%) through its controlled company Nexa Resources Cajamarquilla S.A. (99.91%).

Contractors

Subscription required - Subscription is required.


Deposit Type

  • VMS


Summary:

Cerro Lindo is a Kuroko-style VMS deposit with economic grades of Zn, Cu, Pb, and Ag.

Mineralization is hosted by a pyroclastic unit composed of ash and lapilli-type polymictic tuffs with subrounded, well classified fragments. Some lapilli have centimetre-scale, pencil-like shapes, due to development of an incipient schistosity.

Eight styles of mineralization were identified at the Cerro Lindo deposit:
1. Pyritic, homogeneous, primary massive sulphide (SPP): This unit includes almost exclusively pyrite, less than 10% barite, and minor interstitial chalcopyrite. Its structure is equigranular, generally coarse grained (3 mm to 6 mm), but with fine-grained areas (0.4 mm to 2 mm)

2. Copper-rich, baritic homogeneous primary sulphides (Cu-SPB): This unit contains more than 50% total sulphides (including barite), and more than 10% barite. Barite is associated with sulphides because it was deposited from the same solution at the same time as the sulphides. Its structure is homogeneous, and it is composed of barite, pyrite, pyrrhotite, chalcopyrite, and brown sphalerite. Sulphides typically occur as intergrowths and patches, and brown sphalerite is included in chalcopyrite grains. There is less pyrite than in the Zn-SPB unit (described below). The Cu-SPB is generally found within or near the contact with Zn-SPB and SPP.

3. Zinc-rich, banded, baritic primary sulphides (Zn-SPB): This unit comprises more than 50% of total sulphides (inc ........


Mining Methods

  • Cut & Fill
  • Sub-level stoping
  • Longhole stoping
  • Paste backfill


Summary:

Cerro Lindo has been operating since 2007, with production rates of approximately 7 Mtpa in the recent years. The mine is mechanized, using rubber-tired equipment for all development and production operations. Mining is carried out in ten separate orebodies, using bulk longhole stoping methods, with up to 30 m high stopes, in a primary, secondary, and tertiary sequence. Stopes are backfilled with a low-cement content paste fill made from flotation tailings in the surface paste plant and distributed to the underground via two vacuum filter trains.

The highest operating level is the 1970 m level, the lowest operating level is the 1550 m level, and the ultimate bottom level is planned to be the 1490 m level.

The mine is accessed through fifteen portals that service adits, drifts, and declines. The main ore flow is directed via the grizzly installations on the 1830 m level that feed the jaw crusher located on the 1820 m level. From the crusher discharge, the ore flows up to the surface stockpile areas via an inclined conveyor and out at the 1940 m level from where it continues to flow to the plant via inclined surface conveyors.

MINE METHOD
The stoping methods employed at Cerro Lindo include the bulk Sublevel Longhole Stoping (SLS) method, which accounts for the majority of the production, and the Cut and Fill (C&F) method, utilized where necessary such as for the mining of sill pillars which require a more conventional method for economi ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityProductUnits202220212020201920182017
Zinc Metal in concentrate kt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required130156
Lead Metal in concentrate kt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Metal in concentrate kt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Metal in concentrate koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Equivalent Metal in concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required221264
Lead Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20212020201920182017
Tonnes processed  ......  Subscription required  ......  Subscription required6,799,747 t6,914,653 t7,297,624 t
Daily processing capacity  ......  Subscription required  ......  Subscription required21,000 t21,000 t21,000 t
Daily processing rate  ......  Subscription required  ......  Subscription required18,629 t18,944 t19,993 t
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Mineral Reserves are estimated at an NSR break-even cut-off value of US$38.73/t processed. Some incremental material with values between US$29.13/t and US$38.84/t was included. Mineral Reserves are estimated using average long-term metal prices of Zn: US2,722.20/t (US$1.23/lb), Pb: US$1,997.21/t (US$0.91/lb); Cu: US$7,288.26/t (US$3.31/lb); Au: US$1,454.12/oz; and Ag: US$19.68/oz.

Mineral Resources are estimated at an NSR cut-off value of US$ 38.84/t. Mineral Resources are estimated using average long-term metal prices of Zn: US$3,130.52/t (US$1.42/lb), Pb: US$2,296.79/t (US$1.04/lb); Cu: US$8,381.5/t (US$3.80/lb); and Ag: US$22.63/oz.

CategoryTonnage CommodityGradeContained Metal
Proven 24.3 Mt Zinc 1.61 % 392.2 kt
Proven 24.3 Mt Lead 0.21 % 50.6 kt
Proven 24.3 Mt Copper 0.65 % 158.3 kt
Proven 24.3 Mt Silver 21.8 g/t 17,030 koz
Probable 19.74 Mt Zinc 1.21 % 238 kt
Probable 19.74 Mt Lead 0.2 % 39.1 kt
Probable 19.74 Mt Copper 0.59 % 116.2 kt
Probable 19.74 Mt Silver 22.9 g/t 14,519 koz
Proven & Probable 44.04 Mt Zinc 1.43 % 630.3 kt
Proven & Probable 44.04 Mt Lead 0.2 % 89.7 kt
Proven & Probable 44.04 Mt Copper 0.62 % 274.4 kt
Proven & Probable 44.04 Mt Silver 22.3 g/t 31,549 koz
Measured & Indicated 7.44 Mt Zinc 1.5 % 111.9 kt
Measured & Indicated 7.44 Mt Lead 0.24 % 18.2 kt
Measured & Indicated 7.44 Mt Copper 0.55 % 40.8 kt
Measured & Indicated 7.44 Mt Silver 24.7 g/t 5,910 koz
Inferred 8.23 Mt Zinc 1.4 % 115.2 kt
Inferred 8.23 Mt Lead 0.46 % 37.9 kt
Inferred 8.23 Mt Copper 0.29 % 23.9 kt
Inferred 8.23 Mt Silver 39.2 g/t 10,372 koz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Cash costs (sold) Zinc USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† -0.02 / lb†   -0.09 / lb†  
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units20212020201920182017
Total operating costs ($/t milled) USD 38.232.635.333.629.1

Financials:

Units20212020201920182017
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 25.9   7.5  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 25.9   7.5  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 548.1   629.3  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 271.3   362.5  
Subscription required - Subscription is required



Heavy Mobile Equipment as of December 31, 2020:
HME TypeSizeQuantityLeased or
Contractor
ANFO Loader ....................... Subscription required Leased
Bolter ....................... Subscription required
Bolter ....................... Subscription required Leased
Compactor ....................... Subscription required Leased
Dozer ....................... Subscription required Leased
Drill ....................... Subscription required
Drill ....................... Subscription required Leased
Excavator ....................... Subscription required
Excavator ....................... Subscription required Leased
Forklift ....................... Subscription required Leased
Grader ....................... Subscription required Leased
Jumbo ....................... Subscription required
Jumbo ....................... Subscription required Leased
Loader (FEL) ....................... Subscription required Leased
Raise boring rig ....................... Subscription required Leased
Scaler ....................... Subscription required
Scaler ....................... Subscription required Leased
Scissor Lift ....................... Subscription required Leased
Scoop Tram ....................... Subscription required
Scoop Tram ....................... Subscription required Leased
Trans Mixer ....................... Subscription required Leased
Truck (boom) ....................... Subscription required
Truck (boom) ....................... Subscription required Leased
Truck (fuel / lube) ....................... Subscription required Leased
Truck (haul) 35 t ....................... Subscription required Leased
Truck (haul) 52 t ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 12, 2022
....................... Subscription required ....................... Subscription required Subscription required May 12, 2022
....................... Subscription required ....................... Subscription required Subscription required May 12, 2022
....................... Subscription required ....................... Subscription required Subscription required May 12, 2022
....................... Subscription required ....................... Subscription required Subscription required May 12, 2022
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
Subscription required Subscription required Subscription required 2017
Subscription required 2016
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... 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 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Financial Review 2018
Financial Review 2018
Other 2018
Quarterly Report 2018
Annual Report 2017
Technical Report 2017
Annual Report 2016
Annual Report 2016
Press Release 2015
Technical Report 2010
Subscription required - Subscription is required.

News:

NewsDate
NEXA Provides Update on Cerro Lindo Mine Operation March 28, 2023
Nexa Announces 2022 Year-End Mineral Reserves and Mineral Resources March 20, 2023
Nexa Announces Filing of Annual Report on Form 20-F For The Fiscal Year Ended 2022 and Publication of Mining Report March 20, 2023
Nexa Provides Update on Cerro Lindo Mine Operation March 16, 2023

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