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Mexico
El Pilar Project

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 Location:
22 km SE from Nogales, Sonora, Mexico
  Project Contacts:
Campos Elíseos N° 400 Lomas de Chapultepec Miguel Hidalgo
Mexico City
Mexico, Mexico
11000
Phone  ...  Subscription required
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News
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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Copper
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life15 years (as of Jan 1, 2022)
The El Pilar operation will use highly cost efficient and environmentally friendly SX-EW technology.

The results from experimental pads in the leaching process have confirmed adequate levels of copper recovery. The basic engineering study is finished and the Southern Copper continues developing the project and engage in onsite environmental activities. Detailed engineering is on-going at the SX-EW plant.

Owners

Source: p. 72
CompanyInterestOwnership
Grupo Mexico, S.A.B. de C.V. 88.91 % Indirect
Ownership Tree
The El Pilar property comprises 9,571.4 hectares in 19 concessions. These concessions are wholly owned by Recursos Stingray de Cobre S.A de C.V., wholly owned Mexican subsidiary.

Contractors

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Deposit Type

  • Breccia pipe / Stockwork
  • Porphyry

Summary:

The El Pilar copper deposit occurs within unconsolidated, poorly sorted, poorly bedded, proximal facies alluvial wash deposits that are overlain by dissected younger alluvial fan deposits. At the northern boundary of the deposit, these basin-fill sediments are juxtaposed against unmineralized Precambrian granitic rocks by an east-west to northwest-trending, south dipping zone of faulting and hydrothermal brecciation. The faulting is of unknown displacement. The breccia zone comprises a multi-stage, highly silicified, copper mineralized hydrothermal breccia that is up to 100 m wide and 600 m long. The El Pilar copper deposit is interpreted to have been formed by erosion of this breccia over time into the range-front topographic depression.

Mineralization predominantly consists of the copper oxide mineral chrysocolla, which occurs as coatings on clasts of highly silicified breccia and as grains in the sedimentary gravel matrix. The main gravel sequence that hosts copper mineralization consists of poorly consolidated angular to sub-rounded fragments of breccia, intrusive rocks and minor volcanic fragments cemented in a sandy matrix. These productive gravels, referred to as Quaternary Alluvial Wash Deposits Upper (Qwu) and Quaternary Alluvial Wash Deposits Transitional (Qwt), range from 30 m to 180 m in thickness. The main zone of copper mineralization occurs within a southwest/south trending channel that extends for more than 2 km.

The El Pilar property hos ........

Mining Methods

  • Truck & Shovel / Loader

Summary:

The El Pilar mine is in the pre-production phase of mining and has not yet begun full operation.

Mining of the El Pilar copper deposit will be accomplished by conventional open pit methods, with blasting of ore and waste along with shovel and truck (shovel/truck) loading and hauling. Waste material will be routed to one of two overburden storage facilities (OSF) and ore will be routed to the leach pad.

Mining operations progress in a multi-step process, which includes on-going top-soil removal and pre-production work, drilling and blasting, overburden removal and OSF maintenance, ore production, and reclamation.

Drilling & Blasting
The primary drilling fleet consists of diesel-powered drills with a pull-down force of about 60,000 pounds or about 27,300 kg drill. Material will be drilled with 229 mm diameter holes on 10 m mining benches.

Shift productivities are estimated at 27,500 tonnes for ore and waste, and 25,900 tonnes for overburden. Annual production per drill is estimated at 20.3 million tonnes (Mt) for ore and waste, and 19.1 Mt for overburden.

The main explosive planned for use is ammonium nitrate/fuel oil (ANFO). The blast design for both ore and waste includes an approximately 8 m burden and 8 m spacing. A 9” hole diameter will be used, with a 10 m bench height.

The productivity calculations are also based on a powder factor of 0.3 kilograms per cubic meter (kg/m3 ) for ore and the waste. Dri ........

Crushing and Grinding

Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.

Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Copper Cathode M lbs 59941
Copper Payable metal M lbs 941

Operational Metrics:

Metrics
Daily processing rate  ......  Subscription required
Annual mining rate  ......  Subscription required
Annual ore mining rate  ......  Subscription required
Annual production capacity  ......  Subscription required
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
* According to 2022 study.
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Reserves at :

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Copper USD  ......  Subscription required
Total cash costs Copper USD  ......  Subscription required
Assumed price Copper USD  ......  Subscription required
* According to 2022 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2022
OP mining costs ($/t mined) USD 1.39 *  
* According to 2022 study.

2022 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
OP OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 672.3
Refining costs $M USD  ......  Subscription required
G&A costs $M USD 86
Total OpEx $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
EBITDA (LOM) $M USD  ......  Subscription required
Net Operating Income (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Water Supply
Source: Subscription required

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Proposed Heavy Mobile Equipment as of February 28, 2022:
HME TypeModelSizeQuantity
Dozer ....................... Subscription required 485 HP ....................... Subscription required
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Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Feb 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Feb 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 4, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Quarterly Report 2023
Feasibility Study Report 2022
Form 10-K 2022
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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