Sulphide mineralization discovered to date in the project area can be characterized as Komatiite-hosted Ni-Cu-Co-(PGE) deposit type, which recognizes two sub-types (Lesher and Keays, 2002):

1. Type I – Kambalda-style: channelized flow theory; komatiite-hosted; dominated by net textured and massive sulphides situated at or near the basal ultramafic/footwall contact with deposits commonly found in footwall embayments up to 200 m in strike length, 10s to 100s of meters in down-dip extent, and meters to tens of meters in thickness; generally on the order of millions of tonnes (generally <5 Mt) with nickel grades that are typically much greater than 1% nickel; tend to occur in clusters (e.g., Alexo-Dundonald, Ontario; Langmuir, Ontario; Redstone, Ontario; Montcalm, Ontario; Thompson, Manitoba; Raglan, Quebec).

2. Type II – Mt. Keith-style: sheet flow theory; thick komatiitic olivine adcumulate-hosted; disseminated and bleb sulphides, hosted primarily in a central core of a thick, differentiated, dunite-peridotite dominated, ultramafic body; more common nickel sulphides such as pyrrhotite and pentlandite but also sulphur poor mineral Heazlewoodite (Ni 3 S 2) and nickel-iron alloys such as Awaruite (Ni 3 -Fe); generally on the order of 10s to 100s of million tonnes with nickel grades of less than 1% (e.g., Mt. Keith, Australia; Dumont Deposit, Quebec).

Sulphide nickel-copper-cobalt-PGE mineralization in the Crawford Ultramafic Complex is interprete ........

The Crawford mine plan currently includes three discrete open pits. The largest and first to be mined is the Main Zone, comprising 77% of the total mined tonnage, 80% of feed to the mill and associated contained nickel, and 85% of the recoverable nickel. Immediately north of the Main Zone is the East Zone, which is divided by a saddle into East Zone-West (EZ-W) and EastZone-East (EZ-E). EZ-W is the larger of the two, comprising 16% of the total tonnage to be mined, 14% of feed to the mill and associated contained nickel, and 11% of the recoverable nickel. Mining of the EZ-W will begin in the last year of Main Zone operation. EZ-E will be mined last, starting 33 months after EZ-W.

All waste generated while the Main Zone pit is active will be impounded on the surface. Tailings from the material processed through the mill will be stored in the tailings storage facility (TSF) located to the east of the pits. This facility will be constructed in two phases. The starter phase will use a downstream construction method to its ultimate 36 m height, utilizing waste rock and gravel from the open pit. The much larger ultimate phase will also use the downstream construction method to a height of 49 m before converting to an upstream method utilizing mainly rehandled tailings for the final 24 m. Gravel that is not used to construct the TSF as well as clay will be impounded in two overburden storage facilities (OBS-S and OBS-E) to the south and east of the Main Zone. Waste rock n ........

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The process plant and associated service facilities will process ROM ore delivered to primary crushers to produce nickel concentrate and tailings. The proposed process encompasses:
• crushing and grinding of the ROM ore;
• desliming via hydrocycloning;
• slimes rougher and cleaning flotation;
• coarse rougher, scavenger and cleaning flotation;
• regrind of the coarse flotation circuit final concentrate;
• high-grade material flotation;
• magnetic recovery of coarse scavenger tailings;
• regrinding of magnetic concentrate, scavenger concentrate and coarse first cleaner tailings;
• fines rougher and cleaning flotation of the reground material;
• magnetic recovery of fines rougher and first cleaner tailings.

Concentrate will be thickened, filtered and stockpiled on site prior to being loaded onto railcars or trucks for transport to third-party processing facilities. The coarse scavenger magnetic separation tailings wil ........