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

Western Australian mining project · Operating

Mt Gibson Iron

Mt Gibson Iron is a Western Australian mining project (operating) in MINEDEX, owned by Extension Hill Pty Ltd 100%; Chongqing Chonggang Minerals Development Investment (CCMD); Asia Iron Australia Pty Ltd, on 23 current tenements held by EXTENSION HILL PTY LTD; FENIX PERENJORI PTY LTD; KARARA MINING LIMITED. Commodities: Iron.

MINEDEX project: J00596
Stage: Operating
Owners (MINEDEX): Extension Hill Pty Ltd 100%; Chongqing Chonggang Minerals Development Investment (CCMD); Asia Iron Australia Pty Ltd
Tenement holders: EXTENSION HILL PTY LTD
FENIX PERENJORI PTY LTD
KARARA MINING LIMITED
Parent groups: Ansteel
Asia Iron Holdings (CCMD 60%, Sinom 40%)
Fenix Resources
Commodities: Iron
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	1,960 Mt at 59.9%, 1174 Mt contained	1.15 Mt at 57.9%, 666 kt contained	30 June 2021

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)
IRON HILL DEPOSITS HEMATITE OPERATION	Extension Hill Pty Limited	19 September 2025	MINE CLOSURE PLAN - IRON HILL DEPOSITS HEMATITE OPERATION - J00596 - S0241848
Iron Hill Deposits Hematite Operations	Mount Gibson Mining LIMITED	21 December 2020	Mine Closure Plan - Iron Hill Deposits Hematite Operations - Version 5.1
Mount Gibson Mining Limited, Iron Hill Hematite Project , M59/0338, M59/0339, M59/0454, M59/0526, M59/0609 (granted), L59/0087 (granted).	Mount Gibson Iron LIMITED	21 December 2016	Mount Gibson Mining Limited, Iron Hill Hematite Project Mining Proposal December 2016, M59

EPA Ministerial Statements

MS 1045 Mount Gibson Range Mine Operations - Iron Hill Deposits, MS 968 Hinge Iron Ore Project, MS 806 Mungada Iron Ore Project, MS 805 Karara Iron Ore Project, MS 753 Mount Gibson Iron Ore Mine and Infrastructure Project, MS 750 Mount Gibson Iron Ore Mine and Infrastructure Project

Tenements

Tenement	Holder	Status	Expires	Commodities	Hectares
M 59/338 Mining lease	EXTENSION HILL PTY LTD	Granted	31 August 2036	Iron	915
M 59/339 Mining lease	EXTENSION HILL PTY LTD	Granted	31 August 2036	Iron	636
M 59/454 Mining lease	EXTENSION HILL PTY LTD	Granted	14 January 2044	Iron	103
M 59/455 Mining lease	EXTENSION HILL PTY LTD	Granted	14 January 2044	Iron	3
M 59/526 Mining lease	EXTENSION HILL PTY LTD	Granted	26 December 2043	Iron	54
M 59/609 Mining lease	EXTENSION HILL PTY LTD	Granted	8 June 2030	Iron	376
G 59/33 General purpose lease	EXTENSION HILL PTY LTD	Granted	23 February 2027	Iron	46
G 59/34 General purpose lease	EXTENSION HILL PTY LTD	Granted	23 March 2027	Iron	561
G 59/36 General purpose lease	EXTENSION HILL PTY LTD	Granted	6 September 2028	Iron	75
G 59/41 General purpose lease	EXTENSION HILL PTY LTD	Granted	3 October 2032	Iron	869
G 59/45 General purpose lease	EXTENSION HILL PTY LTD	Granted	22 December 2032	Iron	839
G 59/46 General purpose lease	KARARA MINING LIMITED	Granted	17 September 2034	Iron	1,293
G 59/50 General purpose lease	EXTENSION HILL PTY LTD	Granted	21 August 2034	Iron	64
G 59/62 General purpose lease	EXTENSION HILL PTY LTD	Granted	29 August 2044	Iron	1,064
G 70/232 General purpose lease	FENIX PERENJORI PTY LTD	Granted	14 October 2029	Iron	111
G 70/238 General purpose lease	FENIX PERENJORI PTY LTD	Granted	14 October 2029	Iron	117
L 59/63 Miscellaneous licence	EXTENSION HILL PTY LTD	Granted	28 April 2047	Iron	7
L 59/68 Miscellaneous licence	EXTENSION HILL PTY LTD	Granted	8 June 2027	Iron	5
L 59/69 Miscellaneous licence	EXTENSION HILL PTY LTD	Granted	8 June 2027	Iron	5
L 59/87 Miscellaneous licence	EXTENSION HILL PTY LTD	Granted	4 November 2030	Iron	8
L 59/88 Miscellaneous licence	EXTENSION HILL PTY LTD	Granted	14 March 2032	Iron	666
L 59/89 Miscellaneous licence	EXTENSION HILL PTY LTD	Granted	14 March 2032	Iron	616
L 70/133 Miscellaneous licence	FENIX PERENJORI PTY LTD	Granted	8 August 2034	Iron	36