• 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
South Kalgoorlie Mine (Kalgoorlie Operation)

This page is not tailored to
devices with screen width under 750 px.
 Location:
32 km S from Kalgoorlie, Western Australia, Australia

  Address:
Level 1, 388 Hay Street
PO Box 2008 Subiaco 6904
Subiaco
Western Australia, Australia
6008
Phone  ...  Subscription required
Fax+61-8-6188-2111
EmailEmail
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 TypeUnderground
Commodities
  • Gold
Mining Method
  • Longhole open stoping
Production Start...
The South Kalgoorlie operation includes the Hampton-Boulder-Jubilee (HBJ) underground mine that is situated adjacent to the Jubilee Plant.

Jubilee mill being placed on care and maintenance in Q1 2023. The HBJ ore is processed at the Kanowna Belle mill.


Owners

Source: p. 72
CompanyInterestOwnership
Northern Star Resources Ltd. 100 % Indirect

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Paleoplacer
  • Orogenic
  • Porphyry


Summary:

The SKO is located within the Eastern Goldfields Superterrane and the 842sqkm tenement package traverses across the Coolgardie, Ora Banda, Kambalda and Boorara Domains. Mineralisation is associated with the greenstone sequence that consists of a mafic to ultramafic volcanic succession that is overlain by an intermediate to felsic volcano-sedimentary sequence.

The structural architecture is dominated by NNW-trending crustal scale shear zones including the Boulder-Lefroy, Zuleika, Abattoir, Boorara, Kunanulling, Binduli and Spargoville structural corridors. These structural corridors are the key influencers of mineralisation in the greater Kalgoorlie district and to date have yielded a mineral endowment of over 100Moz.

Mineralisation styles within the district is a combination of Orogenic and Paleoplacer style deposits. Mineralisation is controlled by Brittle-Ductile shear zones, 1st and 2nd order structures that act as Lithostratigraphic contacts (as fluid conduits) through late stage brittle structures. Mineralisation is also associated with fertile sulphidised intrusive porphyries and layered mafic intrusions with chemically reactive lithologies that provide a rheological contrast.

Stratigraphy for the Ora Banda and Kalgoorlie Domains is relatively well-known and comprises (from stratigraphically lowest) a lower basalt unit, komatiitic to high-magnesian basaltic rocks, an upper basalt unit and overlying felsic volcanic-sedimentary units. Con ........


Mining Methods

  • Longhole open stoping


Summary:

The South Kalgoorlie Operation (SKO) includes the HBJ underground mines (HBJ).

The HBJ gold deposit is mined by a top down long hole open stoping (LHOS) method. This mining method was selected to minimise the impact of mining induced stress on the underground operations through the use of geotechnical driven mining sequences at the same time as increasing the extraction rates.

The orebody is accessed through the hanging wall by a central access from which north and south drives are developed.

An initial porphyry ore lode is encountered and developed. Further out in the footwall there is an ore unit sitting against an ultra-mafic contact. Development of the 2401 (ultra-mafic) lodes are delayed as late as possible but just in time for stoping extraction. The priority is placed on developing the western lode followed by a step over to the eastern lode for both the northern and southern extents. Once the stoping panels are mined back towards the main access, development from the access to the north and south can be completed thus completing development.

The stoping front retreats from both northern and southern extents towards the access following a top down LHOS method leaving rib pillars. Additional sill pillars are also planned on the eastern lodes where the ultra-mafic contact is present to ensure the safe extraction of the ore whilst minimizing the potential for footwall failure. The dimensions of the stopes vary depending on what ........


Crushing and Grinding
Source: Source
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits201720162015
Gold oz 78,91245,40319,496
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics20222021201920182017
Annual processing capacity  ......  Subscription required  ......  Subscription required1.2 Mt1.2 Mt1.2 Mt
Ore tonnes mined  ......  Subscription required  ......  Subscription required829,076 t
Tonnes processed  ......  Subscription required  ......  Subscription required987,666 t
Subscription required - Subscription is required.

Reserves at March 31, 2023:
South Kalgoorlie Operations mineral resource estimate has been reported at a 1.5 g/t cut off.

CategoryTonnage CommodityGradeContained Metal
Proven 550 kt Gold 4 g/t 70 koz
Probable 1,785 kt Gold 4.4 g/t 250 koz
Proven & Probable 2,335 kt Gold 4.3 g/t 320 koz
Measured 2,184 kt Gold 3.6 g/t 253 koz
Indicated 10,503 kt Gold 3.2 g/t 1,090 koz
Inferred 7,638 kt Gold 3.6 g/t 894 koz
Total Resource 20,325 kt Gold 3.4 g/t 2,237 koz

Commodity Production Costs:

CommodityUnits20172016
All-in sustaining costs (AISC) Gold AUD 1,100 / oz   1,301 / oz  
C1 cash costs Gold AUD 953 / oz   1,149 / oz  
All-in costs Gold AUD 1,267 / oz   1,842 / oz  

Operating Costs:

Units2017
Combined mining costs ($/t mined) AUD 700  
Processing costs ($/t milled) AUD  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units20172016
Capital expenditures M AUD 20.9   29.1  
Revenue M AUD 130.1   72.4  



Heavy Mobile Equipment as of October 27, 2023:
HME TypeModelQuantity
Drill (long hole) ....................... Subscription required ....................... Subscription required
Drill jumbo (two boom) ....................... Subscription required ....................... Subscription required
Explosives Charger ....................... Subscription required ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Loader - Tool Carrier ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2023
Subscription required - Subscription is required.

Staff:

ContractorsYear
Subscription required 2023

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Quarterly Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Fact Sheet 2018
Press Release 2018
Annual Report 2017
Annual Report 2017
Press Release 2017
Annual Report 2016
Press Release 2016
Year-end Mineral Reserves 2014
Technical Report 2012
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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