• 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
Worsley Alumina (Boddington) Operation

This page is not tailored to
devices with screen width under 750 px.
 Location:
127 km SE from Perth, Western Australia, Australia

  Address:

PO Box 344
Collie
Western Australia, Australia
6225
Phone  ...  Subscription required
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 TypeOpen Pit
Commodities
  • Aluminum
  • Bauxite
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life13 years (as of Jan 1, 2022)
South32 Worsley Alumina is an integrated bauxite mining and alumina refining operation in the South West of Western Australia. Worsley Alumina has been operating the Boddington Bauxite Mine, an overland bauxite conveyor and the Worsley Alumina refinery. It is recognised as one of the largest alumina refineries in the world.


Owners

Source: p. 48
CompanyInterestOwnershipInvestor's Info
South32 Worsley Alumina Pty Ltd. (operator) Indirect
Sojitz Alumina Pty Ltd. 4 % Indirect
Japan Alumina Associates (Australia) Pty Ltd. 10 % Indirect
South32 Limited 86 % Indirect
South32 holds an 86 per cent interest in Worsley Alumina, while Japan Alumina Associates (Australia) Pty Ltd owns 10 per cent and Sojitz Alumina Pty Ltd owns four per cent.

South32 Worsley Alumina Pty Ltd, as manager of the Worsley Joint Venture, acts as agent for and on behalf of the South32 (86%), Japan Alumina Associates (Australia) Pty Ltd (10%) and Sojitz Alumina Pty Ltd (4%).

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Laterite
  • Bauxite


Summary:

The bauxites have developed on the exposed Achaean basement of the Western Gneiss Terrane, which is located on the western edge of the Yilgarn Block. In the project area, the Western Gneiss Terrane is predominantly composed of granitic gneisses and migmatites, as well as the greenstones of the Saddleback Greenstone Belt. The northerly trending greenstone belt is approximately 43 km long and 5 - 12 km wide, and consists of sequences of mafic to felsic volcanics, pyroclastics, and sediments that have undergone greenschist facies metamorphism. The gneisses and greenstones have been intruded by relatively undeformed granites, and subsequently by numerous northerly trending doleritic dykes that range in thickness from 1 to 200 m. The dominant structural feature in the region is the Darling Fault, which forms the western boundary of the Western Gneiss Terrane.

The bauxites are thought to have formed from the lateritisation of the peneplained surface of the Western Gneiss Terrane rocks. Lateritisation is thought to have commenced during the Cretaceous and continued through to the Eocene.

In the project area, bauxite exists as irregular lenses, locally referred to as pods, within the remnant laterite. The pods are generally elongated in the NNW-SSE direction and vary in size from 1 to 200 ha. The majority of the pods contain approximately 2 million tonnes (Mt) of bauxite. The pods are generally confined to slopes where the gradient is between 5° and 10°. In ste ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining of bauxite by Worsley at Boddington Bauxite Mine (BBM) is a continuous process of mining and rehabilitation. Bauxite ore mined at BBM is transported to crushing facilities and crushed ore is then transported via conveyors to the Refinery.

BBM mines the bauxite by shallow open pit mining methods from a number of open pits. The bauxite occurs in pods, close to the surface, with an ore thickness of up to 5 m.

There are two mining areas at Boddington Bauxite Mine, the Saddleback Mining Envelope and the Marradong Mining Envelope. The crushed bauxite product, after primary crushing (at Marradong or Saddleback) and secondary crushing at the Saddleback area, is transported to the Worsley Refinery near Collie, via a 2-flight cable belt overland bauxite conveyor with a total length of 51 km. The bauxite is stockpiled at the refinery.

The majority of the open pits at Boddington Bauxite Mine are shallow to very shallow, typically less than 10 to 15 m deep. Mining of around 18 Mtpa of (wet) bauxite feed to the Alumina refinery requires large areas to be mined on an annual basis, given the limited thickness (between 1 m and 10 m thick) of the bauxite mineralisation. Typically, an area of around 200 ha is mined on an annual basis.

Initial overburden is removed by scrapers and secondary overburden is removed by small 30 t backhoe excavators, when it is impractical for the scrapers to remove the remaining overburden.

Drilling ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2023202220212020201920182017
Alumina kt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required4,3774,526
All production numbers are expressed as powder. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Annual mining capacity  ......  Subscription required  ......  Subscription required
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required4.6 Mt of alumina powder4.6 Mt of alumina powder4.6 Mt of alumina powder
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required18.1 M wmt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2022:
Cut-off grade
Mineral Resources: Variable ranging from 22-25% A.Al2O3, =3% R.SiO2 for mineralised material and >28% A.Al2O3, <3-5% R.SiO2 for blend material and >1m thickness;
Ore Reserves: Variable ranging from 22.5-29% A.Al2O3, <3-5% R.SiO2 and variable thickness >1-2m.

CategoryOreTypeTonnage CommodityGrade
Proven Laterite 191 Mt Al2O3 28.2 %
Probable Laterite 36 Mt Al2O3 27.7 %
Proven & Probable Laterite 227 Mt Al2O3 28.1 %
Measured Laterite 328 Mt Al2O3 28.4 %
Indicated Laterite 375 Mt Al2O3 29.2 %
Inferred Laterite 391 Mt Al2O3 28.6 %
Total Resource Laterite 1,090 Mt Al2O3 28.7 %

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Cash costs (sold) Alumina USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 235 / t   203 / t  
^ Guidance / Forecast.
Subscription required - Subscription is required.

Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Growth Capital M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 60.5   50  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,713   1,286  
EBIT M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 490.7   184.9  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 683.7   379.1  
Subscription required - Subscription is required


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment:
HME TypeModelQuantityRef. Date
Dozer ....................... Subscription required Mar 1, 2022
Dozer ....................... Subscription required Mar 1, 2022
Drill ....................... Subscription required Oct 1, 2018
Grader ....................... Subscription required Jan 4, 2022
Loader (FEL) ....................... Subscription required ....................... Subscription required Mar 1, 2022
Scraper ....................... Subscription required Jan 4, 2022
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required Jan 4, 2022
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required Jan 4, 2022
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required Jan 4, 2022
Surface miner ....................... Subscription required Mar 1, 2022
Truck (haul) ....................... Subscription required ....................... Subscription required Dec 6, 2017
Truck (water) ....................... Subscription required Jan 4, 2022
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 18, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 18, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 18, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 18, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 18, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Oct 18, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required Subscription required Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Environmental Assessment 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... 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
Corporate Presentation 2017
Fact Sheet 2017
Annual Report 2016
Other 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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