Data as at 18 October 2026 · from Western Australian Government registers and open data

Western Australian mining project · Operating

Willowdale-Wagerup / Alcoa

Willowdale-Wagerup / Alcoa is a Western Australian mining project (operating) in MINEDEX, owned by Alcoa of Australia Ltd 100%; Alintagas; Alumina Ltd; Alcoa Corporation; Aac Investments Australia 2 Pty Ltd, on 1 current tenement held by ALCOA OF AUSTRALIA LIMITED. Commodities: Bauxite, Coal.

MINEDEX project: J00779
Stage: Operating
Owners (MINEDEX): Alcoa of Australia Ltd 100%; Alintagas; Alumina Ltd; Alcoa Corporation; Aac Investments Australia 2 Pty Ltd
Tenement holders: ALCOA OF AUSTRALIA LIMITED
Parent groups: Alcoa
Commodities: Bauxite, Coal
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

Resources and reserves

Commodity	Resources	Reserves	Latest estimate
Alumina extractable by Bayer process	52 Mt at 31.8%, 16.5 Mt contained	—	31 December 2025

Current MINEDEX estimates over all the project's sites; resources may include reserves. MINEDEX (DMPE), CC BY 4.0.

Production recorded in MINEDEX

Commodity	Latest year	That year	All recorded
Alumina extractable by Bayer process	2001	2.3 Mt	22.6 Mt

Historical: the bulk extract's production records end in 2002.

EPA Ministerial Statements

MS 971 Newmont Boddington Goldmine - Life of Mine Expansion, MS 728 Wagerup Alumina Refinery - Increase in Production to 4.7 Mtpa; and Wagerup Cogeneration Plant, MS 564 Wagerup Alumina Refinery (s46) [1366], MS 453 Boddington gold mine - Extended basement operation and changes to existing environmental conditions, MS 390 Increase in alumina production to 3.3 million tonnes per annum at Wagerup Alumina refinery, and associated bauxite mining activities, MS 380 Expansion of Ewington Coal Mine, Ewington II, Collie (s46), MS 379 Boddington Gold Mine: Rehabilitation strategy (s46), MS 299 Extension to Boddington Gold Mine Eastern Anomaly Prospect, MS 100 Boddington Gold Mine Project - Modification to processing and disposal of supergene and copper-rich basement ores (s46) [238B], MS 95 Wagerup Alumina Refinery Expansion, MS 85 Boddington Gold Mine Project - mining and processing of supergene/basement ores, MS 49 Boddington Gold Mine Project Expansion of Facilities Stage 2, MS 19 Boddington Gold Mine Enhancement, Boddington

Tenements

Tenement	Holder	Status	Expires	Commodities	Hectares
ML 1SA Mineral lease (State Agreement)	ALCOA OF AUSTRALIA LIMITED	Granted	24 September 2045	Bauxite, Coal	700,000