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

Western Australian mining project · Care and Maintenance

Golden Vale - Copperfield

Golden Vale - Copperfield is a Western Australian mining project (in care and maintenance) in MINEDEX, owned by Ballard Mining Limited 100%; a private holder; Dawsons Mining Pty Ltd; Mt Ida Lithium Pty Ltd; Delta Lithium Limited, on 1 current tenement held by MT IDA LITHIUM PTY LTD. Commodities: Gold.

MINEDEX project: J01202
Stage: Care and Maintenance
Owners (MINEDEX): Ballard Mining Limited 100%; a private holder; Dawsons Mining Pty Ltd; Mt Ida Lithium Pty Ltd; Delta Lithium Limited
Tenement holders: MT IDA LITHIUM PTY LTD
Commodities: Gold
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	2.36 Mt at 1.60 g/t, 122 koz contained	—	23 September 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
GOLDEN VALE PROJECT	a private holder	11 April 2019	MINE CLOSURE PLAN - GOLDEN VALE PROJECT - J01202

Tenements

Tenement	Holder	Status	Expires	Commodities	Hectares
M 29/94 Mining lease	MT IDA LITHIUM PTY LTD	Granted	11 January 2031	Gold	230