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Australia
Bardoc Mine

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 Location:
40 km N from Kalgoorlie, Western Australia, Australia
  Project Contacts:
Level 7, 40 The Esplanade
PO Box Z5024, St Georges Tce
Perth
Western Australia, Australia
6000
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News
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Overview

 Archived Information
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Sub-level stoping
  • Longhole open stoping
  • Backfill
Mine Life9 years (as of Jan 1, 2021)
The Bardoc project includes the Zoroastrian, Aphrodite, Excelsior, Bulletin South and Mayday deposits.

As part of DFS 2021, it was planned to develop a standalone mining and processing operation with the construction of 2.1Mtpa CIL plant and flotation circuit on site.

In 2022, St Barbara acquired the Bardoc project and planned to integrate Bardoc assets into its Leonora operation. In 2023, Genesis acquired St Barbara's Leonora assets. The acquisition of Leonora included the acquisition of the Bardoc project.

Genesis is now focused on delivering a five-year outlook to the market in March 2024, cornerstoned by a long life, ‘margin over ounces’ Leonora business plan.

Therefore, the original development plan for the Bardock project described in the DFS 2021 is invalid.

Owners

Source: p. 7,29,69,89
CompanyInterestOwnership
Genesis Minerals Ltd. 100 % Indirect
On 30 June 2023, Genesis Minerals Limited completed the acquisition of St Barbara’s Leonora assets. The Leonora Acquisition included the acquisition of 100% of St Barbara’s shareholding in Bardoc Gold Pty Ltd.

Contractors

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Deposit Type

  • Breccia pipe / Stockwork

Summary:

The deposit occurs on the eastern limb of a narrow NNW trending structure, the Bardoc-Broad Arrow syncline within the Bardoc Tectonic Zone. In this zone the sequence comprises highly deformed fault slice lenses of intercalated Archaean mafic and ultramafic volcanics and metasediments.

Gold mineralisation is predominately hosted within a 300 to 400m wide differentiated dolerite emplaced into the mafic/ultramafic-sediment sequence. The geological setting, structure and style of gold mineralisation show a distinct similarity to that seen at Paddington and the Broad Arrow deposits 12 to 16km to the south.

The Zoroastrian dolerite is thought to be the stratigraphic equivalent of the Paddington dolerite which hosted the 1m+ ounce mine at Paddington itself with both deposits bounded to the west by the Black Flag sediments and to the east by the Mount Corlac ultramafics. Shear zones up to 10m wide containing gold bearing laminated quartz veining (5cm to 1m wide) occur on both contacts.

The Zoroastrian South has been the main focus of drilling since the discovery of the stockwork system within the granophyric unit. Here drilling has been conducted beneath a series of historical shallow workings on narrow quartz veins resulting in the discovery of a large body of gold mineralisation at depth.

The Slug Hill/Breakaway area at Zoroastrian South represents a distinct magnetic/gravity high that appears to be folded (or boundinaged) with clo ........

Mining Methods

  • Truck & Shovel / Loader
  • Sub-level stoping
  • Longhole open stoping
  • Backfill

Summary:

UNDERGROUND
The Project consists of two underground mines, Zoroastrian and Aphrodite. The Zoroastrian mine is planned to commence off the southern end of the existing Zoroastrian central pit and is the priority focus due to the high-grade, free-milling nature of the ore, and the ability to rapidly commence mining activities. The Aphrodite Underground extends from the base of the Aphrodite Stage 1 Pit. Both underground mines will extract ore from multiple lode systems which are open in all directions. Additional lodes are expected to be encountered as underground mining progresses with progressive underground exploration drilling, currently cost prohibitive from surface.

DESIGN OVERVIEW
Gold is estimated and reported within the underground models to be evaluated within the processing and financial summaries. All ore planned to be extracted from the mines is contained within fresh rock. In order to determine the economically mineable part of the resource, the total value of the gold mineralised material was calculated.

ZOROASTRIAN UNDERGROUND
The Zoroastrian Underground is located at, and will be accessed off, the southern end of the existing Zoroastrian Central Pit.

The underground mine is designed to be accessed off a portal from the southern end of the existing Zoroastrian pit. Lateral development will be carried out using conventional mechanised drill and blast techniques, using twin-boom jumbos.

Stoping wil ........

Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Gold Concentrate kt 292
Gold Metal in doré koz 505
Gold Metal in concentrate koz 593
Gold Metal in conc./ doré koz 1361,097

Operational Metrics:

Metrics
Annual processing capacity  ......  Subscription required
Stripping / waste ratio  ......  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.
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Reserves at March 29, 2021:

CategoryTonnage CommodityGradeContained Metal
Probable 15,874 kt Gold 2 g/t 1,007 koz
Measured 152 kt Gold 2.3 g/t 11 koz
Indicated 36,338 kt Gold 1.7 g/t 2,044 koz
Inferred 18,063 kt Gold 1.8 g/t 1,018 koz
Total Resource 54,597 kt Gold 1.8 g/t 3,073 koz

Commodity Production Costs:

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

Operating Costs:

Units2021
UG mining costs ($/t milled) AUD 15.2 *  
OP mining costs ($/t milled) AUD  ......  Subscription required
G&A ($/t milled) AUD  ......  Subscription required
* According to 2021 study.
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2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscription required
Sustaining CapEx $M AUD  ......  Subscription required
Total CapEx $M AUD  ......  Subscription required
OP OpEx $M AUD  ......  Subscription required
UG OpEx $M AUD  ......  Subscription required
OP/UG OpEx $M AUD  ......  Subscription required
Processing OpEx $M AUD 302.6
Transportation (haulage) costs $M AUD 33.9
G&A costs $M AUD 60.9
Total OpEx $M AUD  ......  Subscription required
Total Taxes $M AUD  ......  Subscription required
Royalty payments $M AUD  ......  Subscription required
Gross revenue (LOM) $M AUD  ......  Subscription required
Net revenue (LOM) $M AUD  ......  Subscription required
EBITDA (LOM) $M AUD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M AUD  ......  Subscription required
After-tax Cash Flow (LOM) $M AUD  ......  Subscription required
Pre-tax NPV @ 6% $M AUD  ......  Subscription required
After-tax NPV @ 6% $M AUD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2023
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Corporate Filings & Presentations:

DocumentYear
Annual Report 2023
Corporate Presentation 2023
Press Release 2023
Quarterly Report 2023
Annual Report 2022
Corporate Presentation 2022
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
Annual Report 2017
Technical Report 2017
Press Release 2014
Subscription required - Subscription is required.

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