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Peru
Las Bambas Mine

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 Location:
73 km SW from Cusco, Peru

  Regional Office:
Av. El Derby 055, torre 3, piso 9 Surco
Lima
Peru
33
Phone+51-01-418-4444
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
On-Site Camp yes
Mine Life20 years (as of Jan 1, 2020)


Owners & OPERATOR

Source: p. 22
CompanyInterestOwnership
CITIC Metal Co. Ltd 15 % Indirect
Guoxin International Investment Co. Ltd 22.5 % Indirect
MMG Ltd. (operator) 62.5 % Indirect
Minera Las Bambas S.A.C. 100 % Direct
Las Bambas is a joint venture project between the operator MMG (62.5%), a wholly owned subsidiary of Guoxin International Investment Co. Ltd (22.5%) and CITIC Metal Co. Ltd (15.0%).

Deposit Type

  • Porphyry
  • Skarn

Source: Source p.31

Summary:

Las Bambas is located in a belt of Cu (Mo-Au) skarn deposits associated with porphyry type systems situated in south-eastern Peru. This metallogenic belt is controlled by the Andahuaylas-Yauri Batholith of Eocene- Oligocene age, which is emplaced in Mesozoic sedimentary units, with the Ferrobamba Formation (Lower-to-Upper Cretaceous) being of greatest mineralising importance.

The porphyry style mineralisation occurs in quartz-monzonite to granodiorite rocks. Hypogene copper sulphides are the main copper bearing minerals with minor occurrence of supergene copper oxides and carbonates near surface. The intrusive rocks of the batholith in contact with the Ferrobamba limestones gave rise to contact metamorphism and, in certain locations, skarn bodies with Cu (Mo-Au) mineralisation.


Mining Methods

  • Truck & Shovel / Loader

Source: p.36, 45

Summary:

Mining of the Las Bambas deposits is undertaken by open pit method, which is expected to continue throughout the life of mine. Large scale mining equipment including 300 tonne trucks and 100 tonne electric face shovels are used for material movement.

The mining method selected for the Las Bambas operation is open cut mining, which enables bulk mining of these large low to moderate grade mineral deposits that are outcropping to sub-cropping. Three deposits, Ferrobamba, Chalcobamba and Sulfobamba are each mined in separate open pits. Mining is by way of conventional truck and shovel operation. This method and selected mining equipment are appropriate for these deposits.


Crushing and Grinding
Source: Source p.46


Processing

  • Flotation

Source: Source p.46

Summary:

The metallurgical process is a conventional froth flotation concentrator and thickener to produce two separate Cu and Mo concentrates and is appropriate for the style of mineralization.

Metallurgical Copper concentration process comprises the following activities; Crushing, Grinding and Flotation, producing copper and molybdenum concentrates. Copper concentrates contain gold and silver as byproducts.

Recoveries & Grades:

CommodityParameter2019201820172016
Copper Head Grade, % 0.840.91.050.93
Copper Recovery Rate, % 88.186.284.377.1
Copper Concentrate Grade, % 38.537.938.136
Molybdenum Concentrate Grade, % 4748.949.2
Molybdenum Recovery Rate, % 79.580.1

Production:

CommodityProductUnits20202019201820172016
Copper Metal in concentrate t 360,000 ^382,518385,299453,749330,227
Copper Concentrate t 994,1301,017,8801,191,979926,015
Molybdenum Metal in concentrate t 1,7831,9611,431
Molybdenum Concentrate t 3,7924,0092,907
Gold Payable metal oz 91,439107,850129,724
Silver Payable metal oz 4,581,7145,483,7966,350,308
^ Guidance / Forecast.

Operational Metrics:

Metrics2019201820172016
Ore tonnes mined 51,653,616 t57,439,971 t52,873,113 t46,910,080 t
Waste 128,286,976 t115,709,415 t
Tonnes milled 51,283,371 t49,443,867 t51,497,642 t46,502,808 t

Reserves at June 30, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 1,056 Mt Copper 6,560 kt
Proven & Probable 1,056 Mt Molybdenum 191 kt
Proven & Probable 1,056 Mt Gold 1.6 M oz
Proven & Probable 1,056 Mt Silver 94 M oz
Total Resource 1,844 Mt Copper 0.58 % 10,613 kt
Total Resource 1,844 Mt Molybdenum 286 kt
Total Resource 1,844 Mt Gold 2.2 M oz
Total Resource 1,844 Mt Silver 148 M oz

Commodity Production Costs:

CommodityUnits20202019201820172016
C1 cash costs Copper USD 1.05 / lb ^† 0.99 / lb† 1.18 / lb† 0.99 / lb† 1.02 / lb†
^ Guidance / Forecast.
† Net of By-Product.

Financials:

Units2019201820172016
Revenue M USD 2,013  2,579  2,937  1,224  
EBIT M USD 540.7  699.7  1,151  405.2  
EBITDA M USD 1,237  1,341  1,741  655  


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
General Manager Edgardo Orderique LinkedIn Jun 20, 2020
Maintenance Manager Manuel Valverde LinkedIn Jun 20, 2020
Maintenance Superintendent Henry Rondon LinkedIn Jun 20, 2020
Plant Operations Superintendent Eric Ruiz LinkedIn Jun 20, 2020

Staff:

EmployeesContractorsTotal WorkforceYear
8,000 2020
1,792 3,999 5,791 2019
1,900 6,800 8,700 2018
1,726 6,568 8,294 2017
9,134 2016

Corporate Filings & Presentations:

DocumentYear
Annual Report 2019
Quarterly Report 2019
Sustainability Report 2019
Year-end Mineral Reserves 2019
Quarterly Report 2018
Sustainability Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Corporate Presentation 2017
Quarterly Report 2017
Sustainability Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Other 2016
Sustainability Report 2016
Year-end Mineral Reserves 2016

Aerial view:

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