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

Western Australian mining project · Operating

Brockman 4 Area / Rio Tinto

Brockman 4 Area / Rio Tinto is a Western Australian mining project (operating) in MINEDEX, owned by Hamersley Iron Pty Ltd 100%, on 15 current tenements held by HAMERSLEY IRON PTY. LIMITED. Commodities: Iron, Manganese.

MINEDEX project: J03931
Stage: Operating
Owners (MINEDEX): Hamersley Iron Pty Ltd 100%
Tenement holders: HAMERSLEY IRON PTY. LIMITED
Parent groups: Rio Tinto
Commodities: Iron, Manganese
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
Iron	26,465 Mt at 59.5%, 15738 Mt contained	2,665 Mt at 60.9%, 1622 Mt contained	31 December 2024

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

Mine closure plans

Site	Operator	Latest plan approved	Plan (PDF on GeoDocs)	Closure year
Western Turner Syncline Mining Proposal_Version 3	Hamersley Iron Pty Limited	6 July 2020	Western Turner Syncline Mining Proposal_Version 3 - J00609	2021

EPA Ministerial Statements

MS 1248 Hope Downs 2, MS 1246 Brockman Syncline Proposal, MS 1195 Greater Paraburdoo Iron Ore Hub Proposal, MS 1031 Western Turner Syncline Iron Ore Project - Revised Proposal, MS 1025 Hope Downs Iron Ore Mine, 75 Km North-West of Newman Pilbara Region - Baby Hope Proposal, MS 1000 Brockman Syncline 4 Iron Ore - Revised Proposal, MS 946 Western Turner Syncline Stage 2 – B1 and Section 17 Deposits, MS 925 Nammuldi-Silvergrass Expansion Project, MS 876 Cape Lambert Port B development (s46), MS 867 Brockman 2 Detrital Iron Ore Mine Extension Phase 2B, MS 854 Hope Downs 4 Iron Ore Mine, MS 807 Western Turner Syncline - Section 10 Iron Ore Mine, MS 717 Brockman Syncline 4 Iron Ore Project, MS 558 Nammuldi—Silvergrass Iron Ore Project, 55 km north-west of Tom Price, MS 523 Yandicoogina Iron Ore Mine and Railway East Hamersley Range (s46) [1265], MS 514 West Angelas Iron Ore Project, MS 417 Yandicoogina iron ore mine and railway, MS 131 Proposed Brockman No. 2 detrital iron ore mine, MS 16 Channar Mining Project, Hamersley Range

Tenements

Tenement	Holder	Status	Expires	Commodities	Hectares
ML 4SA Mineral lease (State Agreement)	HAMERSLEY IRON PTY. LIMITED	Granted	24 March 2028	Iron, Manganese	80,523
G 47/1225 General purpose lease	HAMERSLEY IRON PTY. LIMITED	Granted	7 November 2028	Iron	4
G 47/1227 General purpose lease	HAMERSLEY IRON PTY. LIMITED	Granted	7 November 2028	Iron	20
G 47/1232 General purpose lease	HAMERSLEY IRON PTY. LIMITED	Granted	19 September 2028	Iron	1,258
L 47/139 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	24 May 2026	Iron	521
L 47/140 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	24 May 2026	Iron	1,270
L 47/141 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	26 September 2027	Iron	1,742
L 47/152 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	24 May 2026	Iron	457
L 47/153 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	26 September 2027	Iron	3,613
L 47/161 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	12 April 2027	Iron	430
L 47/184 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	12 July 2028		922
L 47/185 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	24 June 2028	Iron	72
L 47/880 Miscellaneous licence	HAMERSLEY IRON PTY. LIMITED	Granted	6 November 2043	Iron	624
E 47/783 Exploration licence	HAMERSLEY IRON PTY. LIMITED	Granted	25 March 2027	Iron	1,364
E 47/1788 Exploration licence	HAMERSLEY IRON PTY. LIMITED	Granted	17 January 2028	Iron	6,784