• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
Australia
Higginsville Gold Operations (HGO)

This page is not tailored to
devices with screen width under 750 px.
 Location:
48 km N from Norseman, Western Australia, Australia

  Address:
6 Outram St.
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in Australia
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Longhole open stoping
Production Start...
Higginsville Gold Operation (HGO) comprises open pit and underground gold deposits, the 1.6 Mtpa gold processing facility, and in addition, Karora acquired the 1.0 Mtpa Lakewood mill in July 2022. Mining in 2022 was mainly conducted at the Spargos open pit in the Higginsville Greater area and at the Aquarius and Two Boys underground operations in the Higginsville Central Area.
Latest NewsMMS brings in Cat wheel loaders for Higginsville ROM assignment     October 23, 2023


Owners

Source: p. 5
CompanyInterestOwnership
Karora Resources Inc. 100 % Indirect
Karora's principal asset are its 100% interest in HGO (represented by a 100% interest in Karora Australia Pty Ltd.)

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Vein / narrow vein
  • Mesothermal
  • Paleoplacer
  • Sediment-hosted


Summary:

The characteristics of the gold deposits at Higginsville are consistent with the greenstone-hosted quartz-carbonate vein (mesothermal) gold deposit model. Throughout the Higginsville Gold Operations, a significant proportion of gold deposits are hosted by sediments within Southern Palaeochannel networks. Mineralised zones comprise both placer gold, normally near the base of the channel-fill sequences, and chemically-precipitated secondary gold within the channel-fill materials and underlying saprolite. These gold concentrations commonly overlie, or are adjacent to, primary mineralised zones within Archaean bedrock. Outcrop is generally poor, due to extensive ferruginisation, calcareous soils, aeolian sands and extensive areas of remnant lacustrine and fluvial sediments. The result is a complex, layered regolith, with considerable chemical re-mobilisation and re-deposition (Lintern et. al., 2001). Higginsville is located almost entirely within the well-mineralised Archean Kalgoorlie Terrane, between the gold mining centres of Norseman and Saint Ives. The Archaean stratigraphy has a general northward trend comprising multiply deformed ultramafic – gabbro – basalt successions adjoined by sediments to the west and east. Shearing and faulted contacts are common. The units have been structurally repeated by east over west thrust faulting. The HGO can be sub-divided into six major geological domains: - Trident line-of-lode; - Chalice; - Lake Cowan; - Southern palaeochannels; - ........


Mining Methods

  • Truck & Shovel / Loader
  • Longhole open stoping


Summary:

Mining in 2022 was mainly conducted at the Spargos open pit in the Higginsville Greater area, which commenced operations late in 2021, and at the Aquarius and Two Boys underground operations in the Higginsville Central Area. Higginsville Central Trident The Trident deposit has three distinct mineralised zones called Western Zone ("WZ"), Eastern Zone ("b") and Athena Lodes ("AL"). The Trident deposit is to be exploited by underground mining methods with access gained from the previously mined Poseidon South open pit and underground workings. Trident has some key, narrow mineralised zones yet LHOS will not be feasible due to the flat dipping nature of these zones. Air leg room and pillar stoping is proposed and planned in these zones. The Trident underground mine is accessed via an established portal and declines within the open pit, located close to the Higginsville plant and mining offices. The mine is accessed by portals and a series of declines throughout the mine. The declines are typically 5.5 m width (W) x 5.8 m height (H), with a standard ore drive size of 4.5 mW x 4.5 mH. Lateral development profiles are well matched to the mobile fleet. Ore is hauled from the underground to surface via the decline where it isthen transported via a separate surface haulage fleet to the processing facility. The main method will be a top down, mechanised LHOS is the primary stoping method proposed for Trident whilst some flatter dipping, high-grade zones, can be exploited by air ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required55,95884,59591,371
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Annual processing capacity  ......  Subscription required1.4 Mt1.4 Mt1.3 Mt1.3 Mt
Ore tonnes mined  ......  Subscription required  ......  Subscription required784,004 t952,576 t
Tonnes processed  ......  Subscription required  ......  Subscription required580 kt989 kt1,189,400 t1,232,184 t
Waste  ......  Subscription required  ......  Subscription required5,366,911 t
Subscription required - Subscription is required.

Reserves at January 31, 2022:
Effective date HGO Gold Mineral Reserves is September 30, 2020.

Cut-off grades for open-pit mineral reserves vary from 0.50g/t to 0.85g/t. Uderground mineral reserves cut-off grades vary between 1.6g/t (modified and diluted grade) to 2g/t (modified/diluted grade).

Gold Mineral Resources were estimated using variable cut-off grades taking into account variable operational costs: Higginsville Underground (Chalice, Trident and Aquarius) - 1.3g/t, Higginsville Open Pits (excluding Mt Henry Project) – 0.5g/t, Mt Henry Project – 0.4g/t, Spargos uses a 0.5 g/t Au cutoff grade above 300mRL and 1.6g/t below 300mRL.

CategoryTonnage CommodityGradeContained Metal
Proven 8,503 kt Gold 1.3 g/t 362 koz
Probable 9,249 kt Gold 1.6 g/t 483 koz
Proven & Probable 17,752 kt Gold 1.5 g/t 845 koz
Measured 15,449 kt Gold 1.3 g/t 657 koz
Indicated 16,262 kt Gold 1.8 g/t 930 koz
Measured & Indicated 31,711 kt Gold 1.6 g/t 1,587 koz
Inferred 6,372 kt Gold 2.1 g/t 428 koz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Total cash costs (sold) Gold AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Gold AUD  ......  Subscription required 1,565 / oz   1,243 / oz  
C1 cash costs Gold AUD  ......  Subscription required 1,398 / oz   1,069 / oz  
All-in costs Gold AUD  ......  Subscription required 1,940 / oz   1,402 / oz  
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units202220212020201820172016
Capital expenditures M AUD 16.7   18.6  
Revenue M  ......  Subscription required  ......  Subscription required  ......  Subscription required 94.8  AUD 139.3  AUD 151.3  AUD
Operating Income M  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Water Supply
Source: Subscription required

- subscription is required.


Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Ref. Date
Dozer ....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
Grader ....................... Subscription required ....................... Subscription required Existing Leased Jun 10, 2023
Loader ....................... Subscription required ....................... Subscription required Existing Leased Oct 6, 2023
Loader ....................... Subscription required ....................... Subscription required Existing Leased Oct 6, 2023
....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Dec 31, 2020
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2020
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 8, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2023
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2022
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Other 2023
Annual Information Form 2022
Corporate Presentation 2022
Financial Review 2022
Management Discussion & Analysis 2022
Technical Report 2022
................................... 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
Annual Report 2018
Annual Report 2017
Press Release 2017
Annual Report 2016
Annual Report 2015
Year-end Mineral Reserves 2014
Subscription required - Subscription is required.

News:

NewsDate
MMS brings in Cat wheel loaders for Higginsville ROM assignment October 23, 2023

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2017-2023 MDO Data Online Inc.