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Mexico
Noche Buena Mine

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 Location:
57 km NW from Caborca, Sonora, Mexico

  Regional Office:
Callejón Sin Nombre No. 209 Oeste, Col. Centro
Caborca
Sonora, Mexico
83600
Phone  ...  Subscription required
Fax+52-637-373-2204
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • ROM/dump leach
  • Merrill–Crowe
  • Cyanide (reagent)
Mine Life2.4 years (as of Jan 1, 2019)


Owners

Source: p. 54
CompanyInterestOwnership
Fresnillo plc. 100 % Indirect
Minera Penmont, S. de R.L. de C.V 100 % Direct

Deposit Type


Summary:


Mining Methods

  • Truck & Shovel / Loader


Summary:

Noche Buena is an open pit mine.


Crushing and Grinding


Processing

  • ROM/dump leach
  • Merrill–Crowe
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

Facilities consist of waste rock stockpiles, a heap leach pad, process ponds, a Merrill-Crowe plant, and various support facilities. Run-of-mine ore is placed on the heap leach pad for leaching via drip emitters after adding lime to each truckload. There are four ponds: pregnant pond, intermediate pond, and two contingency ponds.

Noche Buena receives solid cyanide via isotankers with flobins stored in a warehouse as a backup supply. There is an offload facility for the isotankers as well as an adjacent flobin mixing facility. Five tanks are used for receiving, mixing, and distributing the reagent-grade cyanide: dissolution (for isotankers), dilution, preparation (for flobins), storage, and dosification.

The Merrill-Crowe plant consists of a clarification cone, clarifiers, deoxygenation towers, a zinc cone, filter presses, and a sedimentation pond (for clarifier wash water). A refinery is also located onsite.

Recoveries & Grades:

CommodityParameter20192018201720162015201420132012
Gold Head Grade, g/t 0.550.520.520.510.50.510.540.51
Silver Head Grade, g/t 0.20.10.10.10.20.40.20.4

Production:

CommodityUnits201920182017201620152014
Gold oz  ......  Subscription required  ......  Subscription required172,282182,280158,179129,242
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required81,423 kt82,373 kt92,593 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required17,432 kt17,400 kt15,607 kt
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required17,431,718 t17,399,931 t15,607,230 t
Subscription required - Subscription is required.

Reserves at May 31, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 28,984 kt Gold 0.53 g/t 493 koz
Measured 19,317 kt Gold 0.53 g/t 330 koz
Indicated 9,667 kt Gold 0.52 g/t 163 koz
Measured & Indicated 28,984 kt Gold 0.53 g/t 493 koz
Inferred 839 kt Gold 0.54 g/t 14 koz

Commodity Production Costs:

CommodityUnits201920182017201620152014
Cash costs Gold USD  ......  Subscription required†  ......  Subscription required† 793.5 / oz† 765.9 / oz† 973 / oz† 946 / oz†
All-in sustaining costs (AISC) Gold USD  ......  Subscription required†  ......  Subscription required† 870.05 / oz† 823.04 / oz† 1,015 / oz† 1,051 / oz†
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2019201820172016201520142013
Total operating costs ($/t milled) USD 9.86.87.57.57.9107.8

Financials:

Units201920182017201620152014
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 2.6   20.9  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 181.7   163.5  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 26.7   25.8  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 2, 2020
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required Subscription required Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Annual Report 2017
Annual Report 2016
Corporate Presentation 2016
Other 2016
Annual Report 2015
Annual Report 2014
Year-end Mineral Reserves 2014
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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