The Red Lake operation is an underground mine, operating in three different historical mining complexes (Red Lake, Campbell and Cochenour) and the recently acquired Bateman Gold Project.

The Campbell-Red Lake and Bateman gold deposits are located within the Red Lake greenstone belt of the Superior Tectonic Province. This belt is host to one of Canada’s largest and richest Archean gold deposits producing more than 26 million ounces of gold since the 1930s. The Red Lake Greenstone Belt is subdivided into several rock assemblages recording magmatic and sedimentary activities that occurred from 3.0 to 2.7 billion years before the present. The tholeiitic and komatiitic metabasalts of the Balmer Assemblage are the oldest volcanic rocks in the belt and are host to the major gold deposits in the Red Lake district, including the Campbell-Red Lake and Bateman deposits.

Gold mineralisation is mainly associated with silicification and sulphide minerals that replace carbonate veins, breccias and wall rock selvages. The carbonate veins and breccias, which are composed of ankerite ± quartz, were formed before and/or in the early stage of penetrative ductile deformation, whereas silicification, sulphide replacement and gold mineralisation were coeval with deformation.

The Cochenour Complex covers mineralization discovered at the Western Discovery Zone deposit and the former Cochenour–Willans mine. It also includes the former Gold Eagle Mines Joint Venture pr ........

The Red Lake Operation operates three different historical underground mines (Red Lake, Campbell and Cochenour) and two processing facilities (Red Lake and Campbell Mills). The recently acquired Bateman Gold Project has added a fourth orebody and a third processing plant, resulting in a consolidated mining region with numerous opportunities to maximise production and margins. Data integration and re-modelling of the Bateman orebody is underway.

Red Lake, Campbell and Cochenour Ore is currently hoisted to surface through two production shafts - Cochenour and Campbell ore via the Reid Shaft and Red Lake via the #3 Shaft. The Campbell Young Dickenson (CYD) surface decline commenced in July 2021 and will provide access to the historic Upper Campbell resource - a key driver in the production ramp up over the coming years. Ventilation is a push-pull system consisting of 4 intake and 5 exhaust fans and 15 underground booster fans.

Mining is carried out with a company-owned fleet of mining equipment, supplemented by contractor production drills.

Access to Cochenour, Balmer and Lower Campbell are via the Cochenour, #3 and Reid shafts. Upper Campbell and Bateman are to be accessed via declines driven from surface.

Bateman Gold Project
The Bateman Gold Project is an underground development project acquired from Battle North Gold in May 2021. It consists of the high-grade F2 Gold Deposit, more than 14,000m of underground development includ ........

- subscription is required.

Red Lake Operation encompasses three separate processing plants; the Campbell, Red Lake, and Bateman mill. All are designed to recover gold via varying extraction flowsheets.

The Campbell Mill uses conventional crushing and grinding followed by gravity concentration to recover free-milling gold. Refractory gold is recovered by flotation followed by pressure oxidation, neutralisation and CIL. Current capacity is 800ktpa and is planned to increase to 1.1Mtpa by 2023.

The Red Lake Mill was successfully commissioned in February 2021 (previously on care and maintenance) and has a current capacity of 300ktpa.

The new Bateman Mill (currently on care and maintenance) has a nameplate capacity of 600ktpa and is currently permitted to 450ktpa. It may be expanded to 900ktpa with minimal expenditure. Evolution is working on expanding to 800ktpa but needs CAPEX and permitting.

Red Lake Site (RLS) Mill Mineral Processing
At the time of the Recertific ........