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

Western Australian mining project · Care and Maintenance

East Location 45 (Loc45)

East Location 45 (Loc45) is a Western Australian mining project (in care and maintenance) in MINEDEX, owned by Lefroy Exploration Limited 100%; Monger Exploration Pty Ltd; Hampton Metals Pty Ltd, on 2 current tenements held by NORTHERN STAR (HBJ) PTY LTD. Commodities: Gold, Silver, Nickel, Platinum group elements.

MINEDEX project: J06431
Stage: Care and Maintenance
Owners (MINEDEX): Lefroy Exploration Limited 100%; Monger Exploration Pty Ltd; Hampton Metals Pty Ltd
Tenement holders: NORTHERN STAR (HBJ) PTY LTD
Parent groups: Northern Star Resources
Commodities: Gold, Silver, Nickel, Platinum group elements
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	9.31 Mt at 1.60 g/t, 478 koz contained	—	5 May 2026

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
Gold	1994	3,119 oz	106 koz

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

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

Tenements

Tenement	Holder	Status	Expires	Commodities	Hectares
M 26/132 Mining lease	NORTHERN STAR (HBJ) PTY LTD	Granted	16 March 2029	Gold, Silver	65
E 26/139 Exploration licence	NORTHERN STAR (HBJ) PTY LTD	Granted	29 November 2026	Nickel, Gold, Silver, Platinum group elements	917