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Senegal
Mako Mine

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 Location:
8 km W from Mako, Senegal

  Address:
Level 2, Australia Place 15-17 William Street
Perth
Western Australia, Australia
6000
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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
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life6 years (as of Jan 1, 2022)
The Mako Gold Mine is a high quality, open pit mine with attractive scale and strong growth potential through near-mine exploration opportunities.


Owners

Source: p. 22
CompanyInterestOwnership
Government of Senegal 10 % Indirect
Resolute Mining Ltd. 90 % Indirect
Petowal Mining Company S.A. (operator) 100 % Direct
Mako is owned and operated by Resolute’s Senegalese subsidiary, Petowal Mining Company S.A. Resolute has a 90% interest in Petowal and the Government of Senegal holds the remaining 10%.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Hydrothermal


Summary:

The Mako Mine is situated in eastern Senegal within the prolific Birimian age “Kenieba Window” geological complex that hosts multiple world class gold mining operations in eastern Senegal and western Mali.

Gold mineralisation is hosted mainly within the Felsic Unit which is sandwiched between two basalt sheets and is associated with disseminated and veinlet pyrite, quartz-carbonate-chlorite alteration and veining and is typified by zones of bleaching and hydrothermal brecciation within both the felsic unit and part of the Lower Basalt Unit.

Mineralisation is contained within a kilometre of strike length and over true widths varying between 5 and 40 metres. Mineralisation remains open at depth and previous deep drill holes have already identified higher grade shoots beneath the base of the open pit which are subject to further exploration to more fully assess their potential to support underground mining operations.

It is currently (2022) interpreted that the northeast striking structure controlled the flow of the gold bearing hydrothermal fluids, with the preferential chemistry/rheology of the felsic volcanic horizon acting as a favourable horizon for silicification and the deposition of the gold-pyrite mineral assemblage. Intensity of gold mineralisation appears to correlate with the intensity of pyrite development and exhibits good lateral and vertical continuity through the mineralised zone.

Dimensions
The gold mineralisat ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Petowal deposit is developed as an open pit mine by conventional methods of drilling, blasting, loading and hauling using standard industry equipment. Top hammers, down-the hole hammers or rotary drills are used for drilling and blasting, depending on the rock characteristics and the optimum blast hole size selected. Grade control is achieved through Reverse Circulation drilling (Coffey, 2015). Dieselpowered 120 tonne hydraulic excavators with 90 tonne (approximate) haul trucks are used us the primary loading and hauling equipment. The pit is mined at a maximum rate of 2.4 Mt of ore per annum, producing 74 million tonnes of waste rock over the Project lifetime (Toro Gold, 2015a). Staged development of the Mine Pit is required in order to maximise the grade of the initial plant feed, minimise waste pre-stripping and fulfil the requirement for consistent total material movement. Stage 1, Stage 2 and Stage 3 are located on the foot wall side of the pit, with Stage 1 located to the south, Stage 2 extending Stage 1 to the north and Stage 3 extending the footwall side of the pit to the final extents of the Mine Pit. Stage 4 extends the southern half of the pit to the west and to full depth, with Stage 5 extending the northern half of the pit to the west and final depth (Coffey, 2015).

The Mine Pit intersecting predominantly fresh rock material. Five metre benches are used in the Mine Pit for mining the ore zone and 10 metre high benches for the waste rock zones.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:
2019 production numbers reflect five months production under Resolute ownership in FY19.

CommodityUnits20222021202020192018
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required156,926
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2021202020192018
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,062,611 t2,757 kt
Tonnes processed  ......  Subscription required  ......  Subscription required811,831 t1,793 kt
Annual processing capacity  ......  Subscription required  ......  Subscription required2.3 Mt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required4.95
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Mineral Reserves cut-off is 0.6g/t Au;
Mineral Resources cut-off is 0.5g/t Au;

CategoryTonnage CommodityGradeContained Metal
Proven 5,090 kt Gold 1.4 g/t 224 koz
Probable 7,100 kt Gold 1.9 g/t 437 koz
Proven & Probable 12,200 kt Gold 1.7 g/t 661 koz
Measured 5,510 kt Gold 1.3 g/t 238 koz
Indicated 9,910 kt Gold 1.8 g/t 560 koz
Inferred 986 kt Gold 0.9 g/t 28 koz
Total Resource 16,400 kt Gold 1.6 g/t 826 koz

Commodity Production Costs:

CommodityUnits20222021202020192018
Site cash costs (produced) Gold USD  ......  Subscription required  ......  Subscription required
Cash costs Gold USD  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required†  ......  Subscription required†
All-in sustaining costs (AISC) Gold USD  ......  Subscription required 655 / oz  
All-in sustaining costs (AISC) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units202120202019
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Water Supply

Raw water for the Project will be pumped from the Gambia River, when it has sufficient water flow, using river pumps that deliver to the WSD. Water will be pumped from the TMF decant to the process water tank. Process water will consist of decant return water with raw water make-up as required.

Water contained by the TMF will be returned for use in the Process Plant. The Process Plant will have a minimum process raw water requirement of 36.6 tonnes per hour. However, a shortfall in process water is expected to occur under average climatic conditions, ranging from 124,000m3/ year to 327,000m3/ year. Abstraction from the Gambia River over a period of 6-8 months will be required in order to make up this shortfall. Process water shortfall occurs under 1 in 100 year dry conditions (Knight Piesold, 2015d). River abstraction rates ranging from 1.6m3/sec (seven months pumping) to 2.95m3/sec (four months pumping) will be required to meet the Process Plant demand.


Heavy Mobile Equipment as of February 12, 2023:
HME TypeModelQuantityLeased or
Contractor
Drill (blasthole) ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required Leased
Truck (haul) ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Feb 12, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Feb 12, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Project Description 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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