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Australia
Duketon North Operation (Moolart Well Mine)

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 Location:
112 km N from Laverton, Western Australia, Australia

  Address:
Level 2, 516 Hay Street
Subiaco
Western Australia, Australia
6008
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Fax+61-8-9442-2290
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life3 years (as of Jan 1, 2022)
Duketon North Operations (‘DNO’) comprises the Moolart Well, Gloster and Dogbolter pits with all ore processed through the Moolart Well processing plant.


Owners

Source: p. 48
CompanyInterestOwnership
Regis Resources Ltd. 100 % Indirect

Contractors

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Deposit Type

  • Mesothermal


Summary:

Moolart Well.
Moolart Well, as part of the DNO, is a mesothermal gold deposit hosted dominantly in intermediate diorite intrusives but also in dolerite, basalt and to some degree ultramafic rock types. Hypogene gold mineralisation is structurally controlled in fresh rock and to a lesser extent in oxidised rock. Competency contrasts between rock types are thought to pay a major role in providing the architecture in which mineralisation occurs. The gold is associated with multiple local moderate to steep east dipping N-S striking structures. These are offset by a series of NW- SE striking post to syn-mineralisation structures which are also partly mineralised.

Deflation and lateritisation of the extant profile are responsible for accumulating a significant portion of the Moolart Well mineralisation into the overlying transported laterite regolith. Remobilisation of gold in the weathered residual profile has depleted the upper parts of the clay zone and enhanced the gold grade of the lower part of the profile in the saprock zone.

A model of the lithology and weathering was generated prior to the mineralisation domain interpretation commencing. The mineralisation geometry has a very strong relationship with the lithological interpretation and structure in both the laterite and the oxide/fresh mineralisations. The updated Reserve for Moolart Well includes numerous open pits, including the addition of three new mining areas (Buckingham, Eindhoven and Mit ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining method assumed in the Ore Reserve study is the same as that currently employed at the Moolart Well Gold Mine and the Gloster Gold Mine, which utilises drill and blast, excavator and truck open pit mining. The existing pit has been designed to be developed in a series of progressive cutbacks.


Crushing and Grinding
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Processing

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Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required10710176
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required3.16 Mt3.15 Mt3.37 Mt
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required6.82 Mbcm5,074,235 bcm7,768,536 bcm
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required2.98 Mt3.26 Mt2.95 Mt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required4.4 2.9 4.5
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Reserves at December 31, 2021:
Resources are reported at cut-off grade of 0.4 g/t Au.
Reserves are reported at cut-off grades not less than 0.3 g/t Au, that vary according to oxidation and lithology domains.

CategoryTonnage CommodityGradeContained Metal
Proven 2 Mt Gold 0.4 g/t 30 koz
Probable 5 Mt Gold 1 g/t 140 koz
Proven & Probable 7 Mt Gold 0.8 g/t 170 koz
Measured 8 Mt Gold 0.7 g/t 180 koz
Indicated 25 Mt Gold 0.7 g/t 590 koz
Inferred 23 Mt Gold 0.7 g/t 540 koz
Total Resource 56 Mt Gold 0.7 g/t 1,310 koz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Cash costs Gold AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 649 / oz   621 / oz  
Total cash costs Gold AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 718 / oz   697 / oz  
All-in sustaining costs (AISC) Gold AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 827 / oz   785 / oz  
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Capital expenditures M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 19   18.4   19  
Revenue M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 175.6   170.1   124.7  
Operating Income M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 84.4   80.7   30.3  
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
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Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Annual Report 2016
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