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Morocco
Zgounder Expansion Project (Zgounder)

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 Location:
98 Km S from Marrakesh, Morocco

  Project Contacts:
Rue de l’Epargne, Numéro 3, Étage 1
Casablanca
Morocco
Phone  ...  Subscription required
Fax05 22 94 90 09
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageConstruction
Mine TypeOpen Pit & Underground
Commodities
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Drift & Fill
  • Longhole stoping
  • Transverse stoping
  • Longitudinal stoping
  • Cemented backfill
  • Dry waste backfill
Production Start...
Mine Life11 years (as of Jan 1, 2021)
On February 22, 2022 the Aya Gold & Silver completed a Feasibility Study to expand the Zgounder Silver Mine from 700 tpd to 2,700 tpd capacity.

Expanded operations will combine:
- 2,000 tpd flotation-CIP plant and 700 tpd flotation-cyanidation plant;
- Open-pit & UG operations.

As end Q2-2023, Construction of the processing plant was 40% complete and construction of the tailing storage facility was 55% complete; the power line and electrical substations progressed to 27% completion.

In 2023 June, open pit operations commenced. Overall, open pit and underground mine development are 47% advanced.
Latest NewsAya Gold & Silver Announces First Drawdown of Zgounder Mine Expansion Project Loan     August 29, 2023


Owners

Source: p. 2
CompanyInterestOwnership
Aya Gold & Silver Inc. 100 % Indirect
Zgounder Millenium Silver Mining S.A. (operator) 100 % Direct
Aya Gold & Silver Inc. owns 100% of Zgounder Millennium Silver Mine S.A., which owns the Zgounder property.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Epithermal
  • Sediment-hosted


Summary:

Zgounder is a Neoproterozoic age, sedimentary rock-hosted, low-sulphidation epithermal silver deposit. The Zgounder Silver Deposit is cross-cut by fractures of variable orientations. There are at least four (4) fracture systems: 1. Late sub-vertical E-W fractures and shear zones; 2. N-S fractures/faults dipping steeply to the east; 3. NNE-NNW-oriented system dipping 60° at a strike of 75°E; and 4. A sub-horizontal system of fractures oriented NNE and NNW, which displaced the Brown Formation to the north with depth (Bounajma, 2002). The Zgounder Deposit formed during two (2) distinct stages of hydrothermal fluid alteration and mineralisation (Essaraj et al., 1998, 2016, 2017): -Deposition of quartz with minor biotite and As-Co minerals from a variety of H2O-CO2-CH4 rich fluids in equilibrium with the metasedimentary host rocks. The fluids were at high temperatures (400ºC to 450°C) over a wide range of pressures, during the early brittle deformation of the Brown Formation, following emplacement of the Askaoun Granite; and -The main phase of (Cu-Zn)-Ag (Hg) mineral deposition. Silver deposition occurred following crystallization of quartz-sphalerite-chalcopyrite veins, but the Cu-Zn and Ag(Hg) mineralising fluids were NaCl-CaCl2 brines at minimum temperatures of about 160°C to 200°C, during a period of hydrothermal albitization. Mineralisation The Zgounder silver mineralisation occurs at the top of the Brown Formation (sandstone), predominantly along the contact and within t ........


Mining Methods

  • Truck & Shovel / Loader
  • Drift & Fill
  • Longhole stoping
  • Transverse stoping
  • Longitudinal stoping
  • Cemented backfill
  • Dry waste backfill


Summary:

The Zgounder expansion Project will be mined in a combination of open pit mining, reclamation of historical tailings, and underground mining.

The mining method selected for the open pit portion of the Zgounder Project is a conventional open pit, drill & blast, truck and shovel operation. The open pit consists of a single pit. The tailings reclamation will be mined using a loader and truck operation; no drilling and blasting will be required. The underground mine will be mined using a combination of drift-and-fill mining and long-hole stoping.

For both the open pit and the tailings reclamation, the ore will be transported by truck to the ore pass, where the material will be brought underground to be processed with the underground ore. Waste material will be deposited in a waste stockpile located near the pit. Ore will also be stockpiled in low-grade and high-grade stockpiles near the pit for future rehandling and processing.

All mining open pit and historical tailings reclamation will be undertaken by mining contractors, who will be responsible for all drilling, blasting, loading, transportation for both the ore and waste material, as well as any pre-split drilling requirements. The development of the underground mine will be undertaken by mining contractors while ore production mining will be undertaken by Aya staff.

Waste material will be sent to the waste stockpile located near the pit. Some waste material will be sent underground ........


Crushing and Grinding
Source: Subscription required

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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsLOM
Silver koz 64,729
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics
Daily ore mining rate  ......  Subscription required
Daily processing capacity  ......  Subscription required
Annual ore mining rate  ......  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 2021 study.
Subscription required - Subscription is required.

Reserves at December 31, 2022:
Mineral Resources:
- The constraining pit optimization parameters were US$15/t of mineralised material (including waste mining) and 50º pit slopes with a 65 g/t Ag cut-off;
- The out-of-pit Mineral Resource grade blocks were quantified above the 75 g/t Ag cut-of;
- Mineral Resource grade blocks were quantified above the 50 g/t Ag cut-off.

CategoryTonnage CommodityGradeContained Metal
Proven 2.9 Mt Silver 293 g/t 27.5 M oz
Probable 5.4 Mt Silver 237 g/t 41.3 M oz
Proven & Probable 8.3 Mt Silver 257 g/t 68.7 M oz
Measured 3,324 kt Silver 354 g/t 37,808 koz
Indicated 6,157 kt Silver 282 g/t 55,832 koz
Measured & Indicated 9,482 kt Silver 307 g/t 93,640 koz
Inferred 542 kt Silver 367 g/t 6,395 koz

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Silver USD  ......  Subscription required
All-in sustaining costs (AISC) Silver USD  ......  Subscription required
Assumed price Silver USD  ......  Subscription required
* According to 2021 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2021
OP mining costs ($/t milled) USD 2.88 *  
UG mining costs ($/t milled) USD  ......  Subscription required
Combined mining costs ($/t milled) USD  ......  Subscription required
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

2021 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
UG OpEx $M USD  ......  Subscription required
OP/UG OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 163.5
Transportation (haulage) costs $M USD 9.7
G&A costs $M USD 51.5
Total OpEx $M USD  ......  Subscription required
Mining Taxes $M USD  ......  Subscription required
Income Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 5% $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Water Supply
Source: Subscription required

- subscription is required.


Proposed Heavy Mobile Equipment as of December 31, 2021:
HME TypeSizeQuantityLeased or
Contractor
Drill 110 kW ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 13, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Aug 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 30, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 23, 2023
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Press Release 2023
Press Release 2023
Annual Information Form 2022
Corporate Presentation 2022
Corporate Presentation 2022
Management Discussion & Analysis 2022
Press Release 2022
Press Release 2022
Press Release 2022
Sustainability Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
Subscription required - Subscription is required.

News:

NewsDate
Aya Gold & Silver Announces First Drawdown of Zgounder Mine Expansion Project Loan August 29, 2023
Aya Gold & Silver Reports Strong Cash Flow and Silver Production of 526,703 Ounces in Q2-2023 August 11, 2023

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