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Australia
King of the Hills (KOTH) Operation (Darlot Mine)

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 Location:
29 km NW from Leonora, Western Australia, Australia

  Address:
Level 2 35 Ventnor Avenue
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
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  • Costs & Financials
  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Airleg stoping
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Room-and-pillar
  • Cemented backfill
  • Paste backfill
Production Start...
Mine Life2037
Previously, the King of the Hills ore was being treated at Red 5’s Darlot processing plant, which was placed into care and maintenance in July 2022.

In 2022, Red 5 has established the new King of the Hills Processing Hub.

The King of the Hills (KOTH) Gold Mine now comprises a centralised 5.5Mtpa processing hub, which is fed by three mines:
1. KOTH Open Pit
2. KOTH Underground
3. Darlot Underground, a satellite mine 100 kilometers north of KOTH.

Since FY 2023 mine's production and financial results of Darlot mine have been included into the King of the Hills mine.


Owners

Source: p. 2,84
CompanyInterestOwnership
Red 5 Ltd. 100 % Indirect
Red 5 owns and operates the new long-life King of the Hills (KOTH) Gold Mine. The KOTH Gold Mine comprises a centralised 5.5Mtpa processing hub, which is fed by three mines: KOTH Open Pit, KOTH Underground, Darlot Underground, a satellite mine 100 kilometeres north of KOTH.

The King of the Hills are 100% held and managed by Greenstone Resources (WA) Pty Limited, a wholly owned subsidiary of Red 5 Limited.

The Darlot mine is operated through Red 5’s 100%-owned subsidiary company, Darlot Mining Company Pty Ltd.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Vein / narrow vein
  • Breccia pipe / Stockwork


Summary:

King of the Hills (KOTH) mine
The King of the Hills (KOTH) mineralisation is considered to be part of an Archean Orogenic gold deposit with many similar characteristics to other gold deposits within the Eastern Goldfields of the Yilgarn Craton.

Gold mineralisation is associated with sheeted and stockwork quartz vein sets within a hosting granodiorite stock and pervasively carbonate altered ultramafic rocks. Mineralisation is thought to have occurred within a brittle/ductile shear zone with the main thrust shear zone forming the primary conduit for the mineralising fluids. Pre-existing quartz veining and brittle fracturing of the granite created a network of second order conduits for mineralising fluids.

Brittle fracturing along the granodiorite contact generated radial tension veins, perpendicular to the orientation of the granodiorite, and zones of quartz stockwork. These stockwork zones are seen in both the granodiorite and ultramafic units and contain mineralisation outside the modelled continuous vein system (High Grade Veins).

Gold appears as free particles (coarse gold) or associated with traces of base metals sulphides (galena, chalcopyrite, pyrite) intergrown within quartz along late stage fractures.

Dimensions
The northern section of the mineralised zone (also known as part of the Western Flank) strikes 30 degrees west of true north over a distance of 700m and plunges to the southwest. Individual lodes dip east at ........


Mining Methods

  • Airleg stoping
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Room-and-pillar
  • Cemented backfill
  • Paste backfill


Summary:

The KOTH Gold Mine comprises a centralised 5.5Mtpa processing hub, which is fed by three mines: KOTH Open Pit, KOTH Underground, Darlot Underground, a satellite mine 100 kilometeres north of KOTH.

The 2023 financial year has seen Red 5 complete the ramp-up of production at our King of the Hills (KOTH) gold mine, with commercial production being declared on 16 December 2022.

KOTH Underground
The mining methods for underground is a mix of narrow to large scale open stoping and air leg room and pillar. Ore development is conducted by Jumbo with an average height of 5.0m and width of 5.0m. The KOTH decline is 5.8m high x 5.0m wide.

KOTH is currently an operating underground gold mine, and the KOTH Feasibility Study 2020 is predicated on the continuation of existing underground mining practices. Mine design parameters are based on current site guidelines, which are well understood and have been successfully implemented.

The proposed primary mining method is long-hole open stoping, with minor amounts of airleg stoping in flat dipping areas of the orebody (<1% of ore tonnes). Stoping will follow a top-down sequence, commencing at the extremities of each level and retreating to the level access. Rib pillars will remain between adjacent stopes to maintain mine stability. The proposed mining methods and sequence are generally a continuation of current operating practices at an increased production rate.

Areas identified for lo ........


Crushing and Grinding
Source: Source p. 28,30
Source: Subscription required

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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:
The KOTH processing facility was commissioned in May 2022, production data for 2022 is represented for two months - May and June 2022.

CommodityUnits202320222021202020192018
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required   ......  Subscription required   ......  Subscription required 48 
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
* Combined production for Darlot Mine and King of the Hills (KOTH) Operation
Subscription required - Subscription is required.

Operational Metrics:

Metrics2023202220202019
Annual processing capacity  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required567.12 kt403 kt
Waste OP  ......  Subscription required  ......  Subscription required
Tonnes milled  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2023:
Mineral Resources:
KOTH OP cut-off at 0.4g/t was determined based on the estimated grade cut-off for a large-scale open pit mine. Mineral Resources KOTH UG cut-off at 1.0g/t determined based on estimated grade cut-off for large-scale open stoping.
Cut-off grades for the Underground Darlot - 2.0 g/t Au; the Underground Great Western - 1.5 g/t Au; the Open-pit Darlot and Great Western - 0.5 g/t Au.

Ore Reserves:
The cut-off grades for the KOTH OP are 0.4g/t Au, the KOTH UG are 1.3g/t Au, and Regional Reserves are 0.4g/t Au.
Darlot the cut-off grade for production is 2.4g/t, and for development, it is 1.0g/t.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 70,861 kt Gold 1.1 g/t 2,578 koz
Total Resource 113,112 kt Gold 1.7 g/t 6,242 koz

Commodity Production Costs:

CommodityUnits2016
Cash costs Gold AUD 893 / oz†  
All-in sustaining costs (AISC) Gold AUD 964 / oz†  
^ Guidance / Forecast.
† Net of By-Product.

Financials:

Units20232016
Capital expenditures (planned) M AUD
Revenue M AUD  ......  Subscription required 14  
Pre-tax Income M AUD  ......  Subscription required
Subscription required - Subscription is required


Water Supply
Source: Subscription required

- subscription is required.


Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Ref. Date
Drill (long hole) ....................... Subscription required ....................... Subscription required Proposed Leased Sep 15, 2020
Drill jumbo (two boom) ....................... Subscription required ....................... Subscription required Existing Leased Dec 24, 2022
Excavator 260 t ....................... Subscription required Existing Leased Dec 24, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Feb 3, 2022
Excavator ....................... Subscription required 360 t ....................... Subscription required Existing Leased Feb 3, 2022
....................... Subscription required ....................... Subscription required Proposed Leased Sep 15, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Sep 15, 2020
Truck (haul) ....................... Subscription required Existing Leased Dec 24, 2022
Truck (haul) ....................... Subscription required ....................... Subscription required Existing Leased Feb 3, 2022
Truck (haul) ....................... Subscription required ....................... Subscription required Existing Leased Dec 24, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Dec 24, 2022
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2023
Subscription required - Subscription is required.

Staff:

EmployeesTotal WorkforceYear
Subscription required 2023
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Quarterly Report 2023
Sustainability Report 2023
Year-end Mineral Reserves 2023
Annual Report 2022
Annual Report 2022
Corporate Presentation 2022
Press Release 2022
Press Release 2022
Press Release 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Other 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Annual Report 2015
Corporate Presentation 2014
Subscription required - Subscription is required.

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