Data as at 28 October 2026 · from Western Australian Government registers and open data

Type

Mining lease

Status

Granted

Holders

JAPAN ALUMINA ASSOCIATES (AUSTRALIA) PTY LTD
SOJITZ ALUMINA PTY LTD
SOUTH32 ALUMINIUM (RAA) PTY LTD
SOUTH32 ALUMINIUM (WORSLEY) PTY LTD

Parent group

South32 (a joint venture)

MINEDEX project

Worsley J00776 · Operating

Owners: South32 Limited 86%; Japan Alumina Associates (Australia) Pty Ltd 10%; Sojitz Alumina Pty Ltd 4%; Alcoa of Australia Ltd; South32 Aluminium (RAA) Pty Ltd; South32 Aluminium (Worsley) Pty Ltd; Alcoa Corporation

Lodged

18 November 1983

Granted

16 January 1989

Expires

2 February 2031

Area

746.30 hectares (7.5 km²)

Mineral field

South West Mineral Field

Commodities

Bauxite

Rehabilitation liability

Its rehabilitation liability is in the MCF Mining Index (subscribers): the Mining Rehabilitation Fund estimate, its trend since 2014, company provisions and closure-plan costs

Environmental registrations

2 mining proposal and closure plan registrations (MINEDEX)

EPA Ministerial Statements

MS 1237

EPA referred proposals

Bauxite mining on the Darling Range in the southwest of WA for the years 2023 to 2027 Under assessment; overlaps 1.2 ha
Worsley Mine Expansion - Revised Proposal Approved (Ministerial Statement), MS 1237; overlaps 745 ha
Forest Management Plan 2014-2023 Approved (Ministerial Statement), MS 952; overlaps 746 ha
Forest Management Plan 2024-2033 Approved (Ministerial Statement), MS 1214; overlaps 746 ha

WAMEX data

1,823 open-file drill holes, 83 exploration reports on this ground

Location

-32.93545, 116.40735 (centre)