Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Open stoping
- Cemented paste backfill
|
Production Start | ... |
East Kundana Joint Venture is comprised of four producing underground mines: Raleigh, Rubicon, Hornet and Pegasus.
The acquisition of Kundana assets, by Evolution Mining, elevates Mungari to a cornerstone asset and consolidates regional resources. In 2023, whilst mining ceased in Frog's Leg, continued activity at Kundana and East Kundana Joint Venture contributed to underground mine development.
Following the integration of Kundana assets, and ongoing growth projects, the Mungari Gold Operation has established Kurrajong Village. It is the new home-away-from-home in Coolgardie for some of our new employees and contractors. |
Source:
p. 4
The East Kundana Joint Venture is between Rand Mining Limited(12.25%), Tribune Resources Limited(36.75%) and Gilt-Edged Mining Pty Limited(51%). On 18 August 2021, Gilt-Edged Mining became a wholly-owned subsidiary of Evolution Mining Limited.
Contractors
- Subscription is required.
Summary:
The Kundana camp is situated within the NorsemanWiluna Greenstone Belt, in an area dominated by the Zuleika Shear Zone, which separates the Coolgardie domain from the Ora Banda domain. The Zuleika Shear Zone in the Kundana area comprises multiple anastomosing shears the most important of which are the K2, the K2A and Strzelecki Shears.
Raleigh mineralisation is hosted on the Strzelecki Structure. Strzelecki mineralisation consists of very narrow, very highgrade mineralisation on a laminated vein hosted in the camp-scale Strzelecki Shear which abuts a differentiated mafic intrusive, the Powder Sill Gabbro against intermediate volcanoclastic rocks (Black Flag Group). A thin ‘skin’ of volcanogenic lithic siltstone-sandstone lies between the gabbro and the Strzelecki shear. Being bound by an intrusive contact on one side and a sheared contact on the other, the thickness of the sedimentary package is highly variable from absent to about forty metres true width.
The Hornet-Rubicon-Pegasus mineralisation consists primarily of high-grade laminated vein hosted gold on the K2 plane of the Zuleika shear with additional mineralisation on associated lower order structures. The Falcon target is a related mineralised zone in the hangingwall to Pegasus and between the two main Zuleika structures, the K2 and Strzelecki structures.
Mining Methods
- Open stoping
- Cemented paste backfill
Summary:
East Kundana (underground mining) (Joint venture)
- Mining method/s: Open stoping with pastefill.
- Access: 5m x 5.5m declines from portals in two pits to five declines which access the Rubicon, Hornet, and Pegasus orebodies at RHP and Raleigh and Sadler orebodies at Raleigh. Deepest current level is approximately 738 metres below the surface (Raleigh).
- Workforce: Owner operator.
Flow Sheet:
Source:
Three stage crushing:
- Primary Metso C140 Jaw crusher (220kW) -1250 x 940mm throat- feed size 800mm, product size p80-120mm;
- Secondary(1) and tertiary(1) crushers: Metso HP 4 (315kW) Product size 17mm;
- Product Screen: Joest inclined vibrating screen 2.44 x 7.6m;
- 4 x conveyor belts, Belt and static magnets as well as a rock breaker for the primary crusher.
Grinding:
- Ball Mill with 4,500kW installed power, Mill size 5.5m(dia) x 8.74m(l), Polymet composite liners, Classification Weir Cavex 250mm (x11) Grind size p80 – 106 µm.
Flow Sheet:
Summary:
- subscription is required.
Reserves at June 30, 2023:
Mineral Resources are reported inclusive of Mineral Reserves.
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
1,121 kt
|
Gold
|
5 g/t
|
182 koz
|
Probable
|
3,047 kt
|
Gold
|
5.2 g/t
|
509 koz
|
Proven & Probable
|
4,168 kt
|
Gold
|
5.1 g/t
|
691 koz
|
Measured
|
2,318 kt
|
Gold
|
5.3 g/t
|
395 koz
|
Indicated
|
6,367 kt
|
Gold
|
5.3 g/t
|
1,091 koz
|
Inferred
|
5,714 kt
|
Gold
|
4 g/t
|
740 koz
|
Total Resource
|
14,400 kt
|
Gold
|
4.8 g/t
|
2,226 koz
|
Corporate Filings & Presentations:
- Subscription is required.
- Subscription is required.