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Ghana
Asanko Mine

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 Location:
40 km NW from Obuasi, Ghana

  Regional Office:
#4, Sir Arku Korsah Road Airport Residential Area
P.O. Box CT 6153
Accra
Ghana
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life10 years (as of Jan 1, 2021)
While technical work to support a Mineral Reserve at the Asanko Gold Mine (“AGM”) is ongoing, mining will continue at Akwasiso Cut 3 and Esaase Cut 3 until their depletion (expected in Q2 2022). Following this, the process plant is expected to continue to operate at full capacity (5.8Mtpa) processing a portion of the existing 9.5Mt of stockpiles.
Latest NewsGaliano Gold Reports Preliminary Fourth Quarter And Full Year Operating Results, On Track To Deliver Updated Technical Report     January 19, 2023


Owners

Source: p. 34
CompanyInterestOwnership
Government of Ghana 10 % Indirect
Gold Fields Ltd. 45 % Indirect
Galiano Gold Inc. (operator) 45 % Indirect
Galiano Gold and Gold Fields Limited jointly each own a 45% interest in Asanko Gold Ghana Limited (“AGGL”), with the Government of Ghana retaining a 10% free-carried interest. The Asanko Gold Mine (“AGM”) concessions are owned 100% by Asanko Gold Ghana Limited.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Porphyry


Summary:

Property Geology and Mineralization
The AGM deposits are hosted along the NE-SW Asankrangwa structural shear corridor, which is defined by NE-SW trending lineaments and magnetic lows and is about 7 km wide and over 50 km long.

Nkran
Nkran occurs on a 20° trending jog on the Nkran Shear Corridor. The Nkran Shear is characterized by sheared siltstones (phyllites) dominant on the western side of the shear and sandstone dominant on the east. The central part of the Nkran deposit consists of a series of wacke and sandstone-dominated stratigraphy that has been intruded by several felsic porphyry intrusions (see Davis, 2016). Consistent mappable lithologies are the western sandstone, the central sandstone, the eastern sandstone, the felsic granitic porphyry intrusive unit, and the skinny breccia unit which is located within the eastern sandstones and runs along the strike of the deposit.

Esaase
Broadly speaking, the Esaase deposit area can be referred to as a ‘system of gold-bearing quartz veins hosted by tightly folded Birimian-age sedimentary rocks arranged along an NNE-SSW trending strike’. Since the maiden resource release in October 2007, various simplified geological models have been used to constrain the resource estimation.

Akwasiso
The Akwasiso deposit lies some 4 km NE of the main Nkran deposit and geologically bears many similarities to Nkran. A granite intrusion surrounds a 080° dipping cross structure and mi ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining by conventional open pit methods of drill and blast followed by load and haul will be employed. Drilling and blasting will be performed on 6 m benches. Loading of the blasted material will be performed on two 3 m flitches. Mining is currently undertaken by two separate mining contractors under the direction of Asanko Gold management.

The primary mining fleet of trucks and excavators is supported by standard open-pit drilling and auxiliary equipment. GC drilling ahead of mining is standard practice. Mining operations occur around the clock on two 12-hour shifts. A pre-split wall control method is being implemented along all the pit walls in the fresh zones to ensure the stability of the pit walls.

Blending strategy
The mine plan was developed around a 5.4 Mtpa processing throughput, where between 20% and 50% of the feed is oxide. A blending program is followed throughout the LOM that consider grade-bins, oretypes and Bond-work-index (BWI).

Mining operations
Grade control
Grade control (GC) drilling and sampling will be required to determine whether material in a given area is above, or below the cut-off grade. The ore is not anticipated to be visually controlled in the active mining face. GC definition drilling and sampling will be required to delineate the ore zone prior to the blast planning of the ore blocks.

Site preparation
The entire mining area will be cleared of buildings, installation ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required223,152205,047147,501
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20212020201920182017
Total tonnes mined  ......  Subscription required  ......  Subscription required30,790 kt44,142 kt34,156 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required5,071 kt4,898 kt4,048 kt
Waste  ......  Subscription required  ......  Subscription required25,719 kt39,244 kt30,108 kt
Tonnes milled  ......  Subscription required  ......  Subscription required5,498 kt5,180 kt3,744 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required5.1 8 7.4
Annual milling capacity  ......  Subscription required  ......  Subscription required5.4 Mt5 Mt5 Mt
Subscription required - Subscription is required.

Reserves at February 28, 2022:
Mineral Resource are reported at a 0.5 g/t Au cut-off and $1,600/oz Au.

CategoryTonnage CommodityGradeContained Metal
Measured 23.6 Mt Gold 1.06 g/t 808 koz
Indicated 42.7 Mt Gold 1.53 g/t 2,096 koz
Measured & Indicated 66.4 Mt Gold 1.36 g/t 2,904 koz
Inferred 6.4 Mt Gold 1.49 g/t 309 koz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Cash costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 688 / oz†   556 / oz†   593 / oz†  
Total cash costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 750 / oz†   618 / oz†   656 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 1,072 / oz†   1,007 / oz†   984 / oz†  
† Net of By-Product.
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Operating Costs:

Units20212020201920182017
OP mining costs ($/t mined) USD 3.343.44.523.623.25
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 3.9   8.4   3.7  
Capital expenditures M USD 85.7   123.8   132.4  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 161.9   256.2   185.2  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 19.7   48   13.2  
Pre-tax Income M USD  ......  Subscription required -128.7   30.4   1.2  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -141.2   6.3   -10.2  
Operating Cash Flow M USD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment as of December 31, 2019:
HME TypeModelQuantityLeased or
Contractor
Dozer ....................... Subscription required ....................... Subscription required Leased
Dozer ....................... Subscription required ....................... Subscription required Leased
Dozer ....................... Subscription required ....................... Subscription required Leased
Drill ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Grader ....................... Subscription required ....................... Subscription required Leased
Grader ....................... Subscription required ....................... Subscription required Leased
Grader ....................... Subscription required ....................... Subscription required Leased
Loader ....................... Subscription required ....................... Subscription required Leased
Loader ....................... Subscription required ....................... Subscription required Leased
Rockbreaker ....................... Subscription required ....................... Subscription required Leased
Rockbreaker ....................... Subscription required ....................... Subscription required Leased
Truck (dump) ....................... Subscription required Leased
Truck (haul) ....................... Subscription required ....................... Subscription required Leased
Truck (haul) ....................... Subscription required ....................... Subscription required Leased
Truck (haul) ....................... Subscription required ....................... Subscription required Leased
Truck (water) ....................... Subscription required ....................... Subscription required Leased
Truck (water) ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Press Release 2022
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Form 20-F 2018
Management Discussion & Analysis 2018
Year-end Mineral Reserves 2018
Management Discussion & Analysis 2017
Press Release 2017
Annual Report 2016
Technical Report 2015
Subscription required - Subscription is required.

News:

NewsDate
Galiano Gold Reports Preliminary Fourth Quarter And Full Year Operating Results, On Track To Deliver Updated Technical Report January 19, 2023

Subscription required - Subscription is required.

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