The deposit type is classified as a hybrid Archean orogenic gold-copper deposit within the Gullewa greenstone sequence. The deposit comprises a series of en-echelon veins hosted within a flexure in the greenstone stratigraphy. Locally, the mineralisation is hosted in five main vein sets, the Western, Central, Da Vinci, Contact and Deflector South West Lodes. Ongoing work at Deflector Southwest indicates that it is likely the continuous strike extension of Western domain. The main lodes are narrow, sub-parallel, fault-hosted, quartz-sulphide veins within a thick sequence of high-Mg basalt intruded by a series of dacitic, dolerite, and lamprophyric dykes. The mafic sequence is bound in the east by a volcanic-clastic unit, and in the west by an ultramafic unit. The metamorphic grade is defined as lower green-schist facies. The Deflector resource extents are 1,700m strike, 430m across strike and 630m below surface and open at depth. These extents host approximately 56 known ore zones (ore domains). The ore zones vary between 0.3 to 5m in width. Domain continuity was extrapolated to half the average drill spacing.

Mining at Deflector currently utilizes twin boom jumbos for ore development and longhole stoping between sill drives.

Underground
Ore lodes are accessed underground via a 5.3mW x 5.5mH, 1:7 decline centrally located along strike.

Level cross-cuts are mined to the east and west of the decline at 17 to 20m vertical intervals with ore development headings driven along strike to the lateral economic extents of lodes. Ore is mined using top-down mechanised open stoping methods on a shallow chevron retreat (when viewed in long section), leaving a variety of island, rib and sill pillars for stability. Localised portions of the upper mine will be extracted using a bottom-up mechanised open stoping method with cement and unconsolidated rock backfill.

All development has had 10%-15% overbreak applied, depending on drive type and location, as well as 100% mining recovery. All stoping has 0.5m hanging wall and 0.5m footwall dilution. The development overbreak estimation is based on 12 months actual data from July to April 2021. Stopes were designed as diluted shapes. Mining recovery is 95% for stopes with no island pillars, and 87.5% for stopes where an island pillar, 4.8mL x 6.0mH that will remain in-situ, is required. Minimum stope width has been applied based upon the lode being mined. Minimum mining widths are 2.5m for Western and Da Vinci Lodes, 2.3m for Central and Contact Lodes, 2.2 for Link Lode and 2.2 for Southwest Lodes. These widths are ........

Regrind and Classification
The regrind circuit will consist of a single stage ball mill in closed circuit with a hydrocyclone cluster.

Flotation tailings will be directed to a high rate thickener to increase the density of the slurry prior to regrinding. Flocculant will be pumped to thickener feed and diluted (by a factor of ten) before addition. Clarified thickener overflow will gravitate to the leach thickener overflow tank.

Thickened underflow will be pumped to the regrind mill. The regrind mill will be a 2.85 (inside shell) x 4.5 (effective grinding length) overflow ball mill relocated from Andy Well. The mill will operate with the maximum ball load of 34% to maintain a motor power draw of 430 kW. Media addition to the mill will be via a ball loading kibble.

Slurry passing through the mill will flow into the Regrind Mill Discharge Hopper where it will be combined with the regrind gravity tails. Process water will be added to the hopper to achieve the correct density prior to being pumped to the Regrind Cyclones. The Regrind Cyclones will classify the ground slurry, with the cyclone overflow reporting to the each circuit and the cyclone underflow to the Regrind Mill for further regrinding. A portion of the cyclone underflow will report to the regrind gravity screen.

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