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

Western Australian mining project · Care and Maintenance

Golden Ridge

Golden Ridge is a Western Australian mining project (in care and maintenance) in MINEDEX, owned by Maritana Minerals Limited 100%; Black Mountain Gold Limited, on 3 current tenements held by BLACK MOUNTAIN GOLD PTY LIMITED. Commodities: Gold, Silver.

MINEDEX project: J01021
Stage: Care and Maintenance
Owners (MINEDEX): Maritana Minerals Limited 100%; Black Mountain Gold Limited
Tenement holders: BLACK MOUNTAIN GOLD PTY LIMITED
Parent groups: Maritana Minerals
Commodities: Gold, Silver
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
Gold	3.05 Mt at 1.12 g/t, 110 koz contained	—	30 June 2026

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
SOUTH KALGOORLIE OPERATIONS (GUNGA WEST / NEW CELEBRATION) - MF 15, 25, 26	HBJ Minerals Pty Limited	10 July 2018	MINE CLOSURE PLAN - SOUTH KALGOORLIE OPERATIONS (GUNGA WEST / NEW CELEBRATION) - MF 15, 25	2021
Alacer Gold Corp South Kalgoorlie Operations	Alacer Gold Pty LIMITED	18 February 2016	Alacer Gold Corp South Kalgoorlie Operations Mine Closure Plan April 2013

Tenements

Tenement	Holder	Status	Expires	Commodities	Hectares
M 26/41 Mining lease	BLACK MOUNTAIN GOLD PTY LIMITED	Granted	3 January 2026	Gold, Silver	32
M 26/433 Mining lease	BLACK MOUNTAIN GOLD PTY LIMITED	Granted	13 December 2035	Gold, Silver	6
M 26/534 Mining lease	BLACK MOUNTAIN GOLD PTY LIMITED	Granted	2 October 2039	Gold, Silver	416