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Mexico
Pinos Altos Mine

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 Location:
220 km W from Chihuahua, Chihuahua, Mexico

  Regional Office:
Ave.Mirador #7724. Colinas del Valle
Chihuahua
Chihuahua, Mexico
C.P.31217
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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 / Underground
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Sub-level stoping
  • Paste backfill
Processing
  • Gravity separation
  • Heap leach
  • Agitated tank (VAT) leaching
  • Counter current decantation (CCD)
  • Merrill–Crowe
  • Cyanide (reagent)
Mine Life2025
Latest NewsAgnico Eagle Provides Update on Mexico Operations     April 2, 2020


Owners & OPERATOR

 
CompanyInterestOwnership
Agnico Eagle Mines Ltd. 100 % Indirect
Agnico Eagle Mexico, S.A. de C.V. (operator) 100 % Direct

Deposit Type

  • Epithermal
  • Vein / narrow vein


Summary:

Gold and silver mineralization on the Pinos Altos property consists of low sulphidation epithermal type hydrothermal quartz veins, stockworks and breccias up to 40 metres in thickness. The most significant mineralization on the property that has been the site of historical mining activities and on which the Pinos Altos mining project is centred, is located in the southeast part of the property. It consists of four mineralized zones, up to 500 metres long by up to 700 metres deep, that are hosted by the Santo Niño structure over a distance of almost 5 kilometres and named from east to west: El Apache, Oberón de Weber, Santo Niño and Cerro Colorado. The San Eligio zone, located approximately 500 metres northeast of the Santo Niño Zone, and within the horst structure, also comprises the Pinos Altos mining project.

Elsewhere on the property, significant gold and silver mineralization also occurs near or adjacent to the north side of the horst structure, namely the Reyna de Plata zone (along the Reyna de Plata Fault) located 1 kilometre north of Santo Niño and 5 kilometres further to the northwest, the Madroño and Carola prospects, which have also had previous mining activity.


Mining Methods

  • Truck & Shovel / Loader
  • Sub-level stoping
  • Paste backfill


Summary:

Pinos Altos is a series of open pits and an underground mine along the Santo Niño Fault. Surface mining is carried out at the Santo Niño and San Eligio pits, and, in future, the El Apache pit. Mining is by conventional open pit methods, using shovels and trucks to remove about 5 million tonnes of ore and waste in 2016, and about 2 million tonnes of ore and waste per year in future years. The underground mining method is sub-level stoping (paste backfill) to extract ore from the Santo Niño and Cerro Colorado deposits. The shaft project for hoisting underground ore was completed in mid-June 2016, with ramp-up to the design capacity of 6,000 tonnes of ore per day completed in July.


Crushing and Grinding


Processing

  • Gravity separation
  • Heap leach
  • Agitated tank (VAT) leaching
  • Counter current decantation (CCD)
  • Merrill–Crowe
  • Cyanide (reagent)

Source: Subscription required

Summary:

Most of the Pinos Altos ore is treated in a processing plant, with the lower grade ore heap-leached. The conventional, 5,500-tonne/day process plant includes crushing, grinding, gravity concentration and agitated leaching followed by counter-current decantation. Gold and silver are recovered using the Merrill-Crowe method, and a refinery produces gold/silver doré bars on site. Metals recovery in the plant is estimated at 94% for gold and 44% for silver over the life of the mine. The lower grade Pinos Altos ore is treated in a heap-leach system designed to accommodate 5.6 million tonnes of material over the life of the mine, contributing about 4.3% of the total metal production.

Recoveries & Grades:

CommodityParameter20202019201820172016201520142013
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t 2.2 ^2.552.962.623.042.682.222.2
Silver Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Head Grade, g/t 69768079.9
^ Guidance / Forecast.
Subscription required - Subscription is required.

Production:

CommodityUnits202020192018201720162015
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required180,859192,772192,974
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as payable metal. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required2,260,155 t2,378,406 t
Daily processing rate  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required5,415 t5,462 t
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryOreTypeTonnage CommodityGradeContained Metal
Probable In-Situ (OP) 4,066 kt Gold 0.94 g/t 123 koz
Probable In-Situ (UG) 13,039 kt Gold 2.53 g/t 1,061 koz
Probable Total 17,104 kt Gold 2.15 g/t 1,184 koz
Probable In-Situ (OP) 4,066 kt Silver 25.28 g/t 3,304 koz
Probable In-Situ (UG) 13,039 kt Silver 64.92 g/t 27,215 koz
Probable Total 17,104 kt Silver 55.5 g/t 30,519 koz
Indicated In-Situ (OP) 934 kt Gold 0.61 g/t 18 koz
Indicated In-Situ (UG) 18,165 kt Gold 1.84 g/t 1,073 koz
Indicated Total 19,098 kt Gold 1.78 g/t 1,091 koz
Indicated In-Situ (OP) 934 kt Silver 13.05 g/t 392 koz
Indicated In-Situ (UG) 18,165 kt Silver 42.42 g/t 24,771 koz
Indicated Total 19,098 kt Silver 40.98 g/t 25,163 koz
Inferred In-Situ (OP) 758 kt Gold 0.84 g/t 20 koz
Inferred In-Situ (UG) 4,041 kt Gold 2.17 g/t 282 koz
Inferred Total 4,799 kt Gold 1.96 g/t 302 koz
Inferred In-Situ (OP) 758 kt Silver 17.41 g/t 424 koz
Inferred In-Situ (UG) 4,041 kt Silver 49.16 g/t 6,387 koz
Inferred Total 4,799 kt Silver 44.15 g/t 6,811 koz

Commodity Production Costs:

CommodityUnits2019201820172016201520142013
Credits (by-product) Gold USD  ......  Subscription required  ......  Subscription required -239 / oz -229 / oz -191 / oz -185 / oz -285 / oz
Cash costs Gold USD  ......  Subscription required  ......  Subscription required 601 / oz 594 / oz 545 / oz 721 / oz 643 / oz
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required 634 / oz 585 / oz 578 / oz 718 / oz 657 / oz
Total cash costs Gold USD  ......  Subscription required†  ......  Subscription required† 395 / oz† 356 / oz† 387 / oz† 533 / oz† 372 / oz†
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2019201820172016201520142013
Total operating costs ($/t milled) USD 66615049454843

Financials:

Units2019201820172016201520142013
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 61.8   48.4   52.9  
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 250.91   251.78   303.2  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 103.84   85.5   149.98  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 6, 2019
....................... Subscription required ....................... Subscription required Subscription required May 6, 2019
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Information Form 2017
Annual Report 2017
Press Release 2017
Annual Report 2016
Form 40-F 2016
Annual Report 2015
Form 40-F 2015
Annual Report 2014
Subscription required - Subscription is required.

News:

NewsDate
Agnico Eagle Provides Update on Mexico Operations April 2, 2020

Aerial view:

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