Summary

Mine Type	Open Pit
Stage	Permitting
Commodities	Silver Gold Lead
Mining Method	Truck & Shovel / Loader
Project Timeline	...
Mine Life	...
Snapshot	The Wonawinta-Mt Boppy project includes the Wonawinta silver mine, which comprises two existing open pits (Manuka and Boundary), with mining operations between May 2012 until May 2015. It also includes three planned open pits (Belah, Bimble and Pothole), an existing processing plant (under care and maintenance since early 2024) and associated infrastructure including approved tailings dams and accommodation facilities, as well as the Mt Boppy gold mine existing stockpiles. The distance by road between Mt Boppy and Wonawinta is approximately 150km via Cobar. The 2025 Project Implementation Plan outlines the upgrading and recommissioning of the Wonawinta processing plant to enhance throughput and leach performance and deliver a Mine Plan that comprises: • silver ore from selected stockpiles at Wonawinta and 5 open pits; and • an initial 0.2Mt of gold ore from selected areas of larger 2.2Mt Rock Dump, Tailings and Stockpile Resource located at Mt Boppy.

Deposit type

• Carbonate hosted
• Mississippi Valley Type
• Orogenic
• Vein / narrow vein

Summary:

Wonawinta
The Wonawinta silver-lead-zinc project, is a carbonate-hosted Pb-Zn-Ag deposit with affinities to Mississippi-Valley Type (MVT) style mineralisation. The primary host is the dolomitised upper fossiliferous portion of the Booth Limestone member of the Early Devonian Winduck Group.
• Oxide Ag-Pb-Zn mineralisation is developed as agently-dipping blanket up to 160m wide and averaging 13m thick on and around the contact between the Booth Limestone and an overlying thick quartz-kaolinite-illite- muscovite clay sequence.
• Discrete silver minerals are rare, with the bulk of the silver associated with lead and iron oxides and sulphates, and lead and zinc carbonates and dolomite. Primary mineralisation consists of vein, breccia and replacement style marcasite, galena and sphalerite.
• The NNW-trending, strata-bound Wonawinta deposit extends for about 6km along the western flank of the Wonawinta Anticline.

The mineralised envelope at Wonawinta is broadly stratiform and stratabound, straddling the contact between a lower limestone unit and overlying siltstone/claystone. Upper and lower contacts of this envelope are highly irregular, reflecting a complex history of primary mineralisation overprinted by weathering and supergene enrichment. Mineralisation is roughly sub-parallel to stratigraphy and is generally flat lying to gently (10°-30°) west dipping and south plunging, although gently east-dipping parts have been defined on the eastern limb of the Wonawinta Anticline.

Manuka and Boundary pits
Shallow sediment-hosted lead-zinc-silver mineralisation proved to be extensively oxidised with little to no residual sulphur at the depths mined. Ore mineralogy was dominated by very fine surface clays and coarser dolomitic limestone increasing with depth. Silver was assumed to be concentrated in clays through supergene enrichment.

Mount Boppy
The Mount Boppy deposit is located in the northern part of Devonian Canbelego-Mineral Hill Rift Zone, flanked by the Kopyje Shelf, on the far eastern side of the Cobar Basin.

Mineralisation occurs in brecciated and silicified sediments and quartz veining developed along a west-dipping fault that down-throws Devonian aged Baledmund Formation rocks on its western side against Orodovician age Girilambone Group rocks on it eastern side.

The higher grades tend to lie in the hanging wall rocks (Baledmund Formation) on the western side of the Main Lode where the dip shallows.

The Main Lode strikes approximately north-south and dips at approximately 70-80° west.

Historical underground workings were supported with timber and back-filled with tailings sands from processing. Sand fill samples grade between 0.05 g/t Au and 38 g/t Au with an average of 3.5 g/t Au.

Mineralisation is predominantly gold, associated with grey quartz veins and minor pyrite.

Dimensions
The Mineral Resource has a strike length of 455 m and a maximum depth below surface of 230 m. The horizontal width of combined mineralised domains averages 60 m near surface, where the western lode peters out, the main lode maintains approximately 10 - 12 m width. Mineralisation dips 85° to the west.

Mining Methods

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Comminution

Crushers and Mills

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Processing

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Commodity Production

Operational metrics

Metrics
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Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Jun 25, 2025
.......................	.......................		Jun 25, 2025

Total Workforce	Year
......	2025