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

Western Australian mining lease

M 39/723 · Mt Zephyr Calcrete

M 39/723 is a Western Australian mining lease held by MURRIN MURRIN OPERATIONS PTY LTD (Glencore group). Granted 8 June 2001, expires 7 June 2043. 19 ha in the Mount Margaret Mineral Field. Commodities: Limestone. Part of the Mt Zephyr Calcrete project (operating).

Type: Mining lease
Status: Granted
Holder: MURRIN MURRIN OPERATIONS PTY LTD
Parent group: Glencore (a subsidiary)
MINEDEX project: Mt Zephyr Calcrete J02291 · Operating
Owners: Minara Resources Ltd 100%
Lodged: 3 April 1999
Granted: 8 June 2001
Expires: 7 June 2043
Area: 19.30 hectares (0.2 km²)
Mineral field: Mount Margaret Mineral Field
Commodities: Limestone
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
Environmental registrations: 6 mining proposal and closure plan registrations (MINEDEX)
WAMEX data: 26 exploration reports on this ground
Location: -28.4903, 122.1338 (centre)

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Mining proposals and mine closure plans

Date	Registration	Title	Status	Document (GeoDocs)
23 September 2026	Mining Proposal	MMN Mining Proposal Amendment - Evaporation Pond 5	Approved	no public document
13 January 2015	Mining Proposal	2015 - 2017 Mine Development Mining Proposal	Approved	mp_53249.pdf
24 January 2013	Mining Proposal	Calcrete and Murrin Murrin East Grade Control Mining Proposal	Approved	mp_37764.pdf
30 May 2000	Mining Proposal	MURRIN MURRIN WINDARRA CALCRETE WATER DISCHARGE	Approved	mp_16741.pdf
24 February 1998	Mining Proposal	MURRIN MURRIN : WINDARRA QUARRY ADDENDUM	Approved	mp_16109.pdf
6 January 1998	Mining Proposal	MURRIN MURRIN : WINDARRA CALCRETE QUARRY	Approved	mp_2664.pdf

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