The Tiger Deposit represents a distal variety of the reduced intrusion related gold deposit (RIRGD) model. The following is based on a paper completed by Craig Hart (Hart 2007) and work completed by Eric Theissen for his Master’s thesis (Theissen 2013).

RIRGDs are best developed around small, cylindrical-shaped plutons that have intruded sedimentary or metasedimentary host rocks. Plutons are typically emplaced between 5 and 9 km depth. Fluid flow and mineralization is largely controlled by structural features impinging upon the thermally driven hydrothermal system. The dominant structural control on RIRGDs is weak extension that forms arrays of parallel fractures in the brittle carapace. These are filled with auriferous, low-sulphide quartz veins that form extensive, intrusion-hosted sheeted arrays.

Mineralization often extends beyond the limits of the intrusion and locally beyond the limits of the thermal aureole. RIRGDs exhibit predictable zonation and differing deposits styles outward from the central, mineralizing pluton, with increasing structural control on the more distal mineralization.

Low-sulphide contents (0.1 to 2.0%) are common in intrusion-hosted systems, and is dominated by pyrite, pyrrhotite and arsenopyrite, with accessory scheelite and bismuthinite. Arsenopyrite is more abundant in veins outside of the intrusion and is commonly associated with pyrrhotite in replacement-style mineralization.

Several types of mineralization are known to occur on the Property including:
1. sediment-hosted replacement-style gold
2. zinc ± silver ± lead ± gold ± bismuth in limonite-rich veins and replacement bodies
3. scheelite in tremolite skarns
4. pyrrhotite ± scheelite ± chalcopyrite in actinolite-diopside ± garnet skarns
5. wolframite ± tantalite in granite
6. gold bearing quartz-boulangerite veins
7. pyrite-sphalerite-galena in carbonate replacement deposits.

Sediment-hosted replacement style gold mineralization is the most significant economic mineralization explored on the Property to date. Known showings of this type include the Tiger Deposit.

The open pit mine will utilize a conventional truck-and-excavator fleet. Based on the geotechnical recommendations provided by Golder (2016), blasting will be performed on non-oxide rock only, while oxide material will be excavated directly by a hydraulic excavator.

The mining schedule was developed based on a nominal processing capacity of 1,500 t/d for 365 d/a. Oxide and sulphide material above the economic cut-off will be scheduled for processing. Oxide and sulphide material below the economic cut-off will be handled as waste.

Over the eight-year mine life, the pit will produce 3.2 Mt of mineralized material and 15.6 Mt of waste rock. The LOM average gold grade of oxide and sulphide material is 4.06 g/t and 2.99 g/t, respectively. The LOM stripping ratio (defined as waste material mined divided by mineralized material mined) is 4.9.

The proposed 1,500 t/d processing plant will utilize conventional crushing, grinding, cyanidation by carbon-in-pulp (CIP), and gold recovery from loaded carbon to produce gold doré from the Tiger mineralization. Although previous heap leach test work showed promising results from oxide mineralization, and extensive engineering studies were conducted using a combined heap leach and tank processing treatment to extract the gold from the mineralization, there are numerous potential technical risks and challenges associated with the heap leach option. Therefore, a conventional cyanidation circuit consisting of grinding and agitated cyanide leaching for both the sulphide and oxide resources is proposed for this study.

The process plant will co-process two types of mineralization: oxide mineralization and sulphide mineralization. The overall design philosophy was to select proven equipment, with a simple and single line flowsheet that can be operated and maintained effectively in ........