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

Western Australian mining lease

M 37/46 · Gwalia - Leonora

M 37/46 is a Western Australian mining lease held by GENESIS MINERALS (LEONORA) PTY LTD (Genesis Minerals group). Granted 1 July 1985, expires 14 July 2027. 444 ha in the Mount Margaret Mineral Field. Commodities: Gold, Silver. Part of the Gwalia - Leonora project (operating).

Type: Mining lease
Status: Granted
Holder: GENESIS MINERALS (LEONORA) PTY LTD
Parent group: Genesis Minerals (a subsidiary)
MINEDEX projects: Gwalia - Leonora J00330 · Operating
Owners: Genesis Minerals Ltd 100%

Kailis J05596 · Care and Maintenance
Owners: Northern Star Resources Ltd 100%; St Barbara Ltd; Saracen Mineral Holdings Ltd
Lodged: 31 October 1984
Granted: 1 July 1985
Expires: 14 July 2027
Area: 443.80 hectares (4.4 km²)
Mineral field: Mount Margaret Mineral Field
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
Mine closure plan: Kailis: approved 2 June 2023, Kailis Mine Closure Plan
Kailis Environmental Group Site: approved 15 February 2019, Kailis Environmental Group Site S0233604 Mining Proposal
Environmental registrations: 8 mining proposal and closure plan registrations (MINEDEX)
EPA referred proposals: NiWest Nickel Cobalt Project Under assessment; overlaps 8.4 ha
Magellan Lead Carbonate Project, Wiluna Approved (Ministerial Statement), MS 905; overlaps 0.6 ha
WAMEX data: 549 open-file drill holes, 140 exploration reports on this ground
Location: -28.84395, 121.2958 (centre)

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Mining proposals and mine closure plans

Date	Registration	Title	Status	Document (GeoDocs)
2 June 2023	Mine Closure Plan	Kailis Mine Closure Plan	Approved	MCP_100896.pdf
15 February 2019	Mining Proposal With Mine Closure Plan	Kailis Environmental Group Site S0233604 Mining Proposal	Approved	MP_77401.pdf mcp_77401.pdf
11 July 2016	Mining Proposal	Kailis to Harbour Lights Dewatering Mining Proposal	Approved	mp_59686.pdf
29 March 2016	Mining Proposal	Kailis Gold Mine Mining Proposal	Approved	mp_58521.pdf
21 May 2008	Mining Proposal	SONS OF GWALIA TRUMP OPEN PIT M37/46 M37/219	Approved	mp_19396_res.zip mp_19396_res.pdf
19 July 2001	Mining Proposal	SONS OF GWALIA : KAILIS : FOREST PIT AND REHAB OF H/LIGHTS	Approved	mp_3750.pdf
18 October 2000	Mining Proposal	SONS OF GWALIA : KAILIS WASTE CAPPING OF HARBOUR LIGHT TSF	Approved	mp_3516.pdf
14 September 2000	Mining Proposal	SONS OF GWALIA : KAILIS OPEN PIT	Approved	mp_3487.pdf

Registrations from MINEDEX (DMPE); the documents are the operators' own, linked on GeoDocs and not copied.