The Brewery Creek deposits exhibit characteristics of both intrusion-related and epithermal type deposits. It is generally considered to be an alkalic intrusion-associated, gold deposit as most of the mineralization is concentrated within or proximal to the monzonites.

The following factors support an epithermal, environment of mineralization for the deposits along the reserve trend: 1) a strong gold, arsenic, antimony, mercury association within veins and breccias, 2) very low base metal concentrations and a relatively high gold : silver ratios of 3:1, 3) the absence of contact metamorphism in sediments around sill contacts along the reserve trend, 4) euhedral, coarse-grained quartz with primary growth zones, 5) open space textures such as comb and cockade textured quartz and chalcedony, and 6) the presence of trace amounts of CO2, low salinities (<7% NaCl) and low homogenization temperatures (< 300 °C) within fluid inclusions.

Big Rock
The West and East Big Rock deposits are the furthest westerly known occurrence in the district and are located approximately 1.2 km from the current heap leach pad. Mineralization occurs primarily in limonite-altered quartz monzonite sills and subordinately in adjacent siliciclastic sedimentary strata.

Canadian and Fosters
The Fosters mineralized area includes only the un-mined Lower Fosters deposit, which lies approximately 3.5 km from the current heap leach pad. Logs of reverse circulation drillholes indicate that mineralization associates with clay alteration, presumably from the destruction of K-feldspar minerals. According to Diment and Simpson (2009), mineralization is associated with pervasive phyllic and locally intense argillic alteration. The feldspars alter to an assemblage of sericite, illite and kaolinite. Fine pyrite and arsenopyrite occur in association with secondary quartz. Gold occurs primarily in the limonite-altered quart monzonite and subordinately in sedimentary strata that lie adjacent to the intrusions.

Bohemian-Schooner
Gold mineralization at Bohemian-Schooner occurs primarily in clay-altered quartz monzonite sills and subordinately in adjacent siltstone. It occurs most commonly in association with strong argillic altered and locally silicified quartz monzonite. Sheeted and stockwork mm- to cm-scale quartz-pyrite-arsenopyrite veins, commonly forming conjugate patterns in detail, cut the altered intrusion and occur in association with higher grade zones.

Kokanee
Mineralized material at Kokanee occurs primarily in the quartz monzonite sill complex and subordinately in siltstone and argillite. Observations of mineralized material exposed in pit walls shows millimeter-scale veinlets with ironoxide ± quartz fillings. The mineralized quartz monzonite typically contains several percent of evenly disseminated oxidized pyrite.

Golden
Golden, like Kokanee, is hosted by the thickest and most extensive part of the Cretaceous quartz monzonite sill complex. The K-feldspar component of quartz monzonite, both phenocryst and groundmass are altered to white clay.

Lucky
Lucky is situated immediately west of the Bohemian-Schooner deposits and northeast of the
Golden deposit. Altered Cretaceous quartz-monzonite that intrudes lower Earn Group sediments host mineralized material at Lucky, similar to that at Bohemian-Schooner.

Due to the shallow nature of the resources included in the PEA, only open pit mining has been considered. The mining has been proposed as a truck and shovel type operation.

Precious metals will be recovered from low grade mineralized material by heap leaching. To prepare the ore for leaching, a crushing plant is planned. The ore will be processed through the crushing plant at 7,500 tonnes per day, 230 days per year. Crushed ore will be placed on the heap by truck and leached with a dilute cyanide solution. Precious metals will be recovered from the leach solution by adsorption on activated carbon. The precious metals will be periodically desorbed from the activated carbon and the stripped carbon will be reactivated by an on-site kiln. Precious metals will be recovered from the strip solution by electrowinning. The product from electrowinning will be dried and smelted to produce dóre bullion which will be shipped from the site to refiners.

Based on the data provided by Brewery Creek, the following process plant flowsheet has been selected:

1. Crushing Plant – Tertiary crushing, with primary jaw, secondary and tertiary cone crushers, and surge bin to feed agglomeration.

2. Agglomeration – Lime and cement are added to the main conveyor belt feeding the agglomeration drum. Agglomerates discharge the drum to form a crushed ore stockpile.

3. Ore Stacking – Truck Stacking.

4. Heap Leach Solution Management – Pumping and piping systems to circulate and collect leach liquors.

5. Carbon Columns – For precious metal adsorption.

6. Carbon Stripping and Refining – Concentration of gold solutions for electrowinning and production of final product.

7. Acid Washing and Carbon Reactivation – Carbon handling system designed to remove acid soluble deposits on the carbon surface and re-activate loading sites to maintain maximum gold loadings.

8. Final Detoxification – Solution detoxification for discharge.