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Detour Lake Mine ASSET

ASSET DESCRIPTION

ASSET NAME

Detour Lake Mine

ASSET TYPE

Operating

Operating METALS & MINERALS

Gold

OPERATOR

Detour Gold Corp.

SPECIFIC LOCATION

Detour Lake, Cochrane, Unorganized, North Part, ON, Canada

CURRENT ASSET STATUS

Near mine exploration

THE ONLY

The Largest gold producing mine not controlled by a senior producer.

THE LARGEST

Canada's largest gold Reserve.

ONE OF THE TOP

Second largest operating gold mine in Canada

REFERENCE OR DISTRICT NAME

Northeastern Ontario

HISTORICAL OWNERSHIP

MINERAL RESOURCES AND RESERVES

Mineral Resources: NI 43-101

Metal	Measured				Indicated				Inferred			Attributable interests
Metal	Tonnage	Grade	Contained	CutOff	Tonnage	Grade	Contained	CutOff	Tonnage	Grade	Contained	Contained
Gold	17.4 k mt	1.33 g/t	746 k oz	0.5 g/t	66.2 k mt	1 g/t	2125 k oz	0.5 g/t	33.7 k mt	0.81 g/t	875 k oz	463

Metal	Proven	Probable	Attributable interests
Tonnage	Grade	Contained	CutOff	Tonnage	Grade	Contained	CutOff	Contained
Gold	89.2 k mt	1.26 g/t	3603 k oz	0 g/t	351 k mt	0.95 g/t	10779 k oz	0 g/t	0

Mineral Reserves: NI 43-101

DISCOVERY COST

Reserve: Gold (oz)

$ 4.00

SNAPSHOT

THE PRODUCTS YOU SELL ARE

Gold

Total mine construction cost (US$m)

500

Processing Method

Mill

TOTAL CASH COST PER GOLD OUNCE

Amount in millions	Mining	Processing	Admin	Royalties	Total	%
Fuel	0	0	0	0	0	0 %
Maintenance	0	0	0	0	0	0 %
Labour	0	0	0	0	0	0 %
Insurance	0	0	0	0	0	0 %
Royalities	0	0	0	0	0	0 %
Reagents	0	0	0	0	0	0 %
Explosives	0	0	0	0	0	0 %
Contractors/consultants	0	0	0	0	0	0 %
Other*	0	0	0	0	0	0 %
Total US$ millions	0	0	0	0	0	0 %

PRODUCTION

PRODUCTION CYCLE	Annual					2026 Experiences				Expectations
PRODUCTION CYCLE	2013	2014	2015	2017	2025	Q1	Q2	Q3	Q4	2026	5 Year Avg	Remaining LOM
	128	392	100	1	0	0	0	0	0	0	0	0	Capital Expenditures	1	3
	12	16	90.7	1	0	0	0	0	0	0	0	0	Ore Tons Mined	2	3
	11	17	54114	1	0	0	0	0	0	0	0	0	Mill Feed - Ore Tons Processed	3	3
	232	456	505.56	1	0	0	0	0	0	0	0	0	Gold (k oz) Produced	79	2
	212	423	486.24	1	0	0	0	0	0	0	0	0	Gold (k oz) Sold	79	1
	0	0	0	1	0	0	0	0	0	0	0	0	Gold Recovery (%)	79	4
	928	1182	675	1	0	0	0	0	0	0	0	0	Cash Operating Cost	4	3
	0	0	840	1	0	0	0	0	0	0	0	0	All - in Sustaining Costs	5	3
	0	0	2.9	1	0	0	0	0	0	0	0	0	Strip Ratio – Waste:Ore	6	3

ARTICULATED HAULERS

US METRIC

MINING TRUCKS

US METRIC

TRUCKS	No. OF TRUCKS	NET POWER (HP)	LOAD CAPACITY (tons)
CAT 795F	25	3188	320

POWER DEMAND

POWER AND ENGINEERING

Power Usage: total MWh per year

Peak power demand MW

Environmental Impact Assessment, man hours

Engineering firms

Local firms

AFTER TAX & ROYALTY NET PRESENT VALUE

Assumed Exchange Rate

1 AUD = 0 USD

Feasibility Highlights

Total Pre-tax-undiscounted Mine-life cash flow (US$ m)

US$ 3700 million

Date of Assessment

Jul 20, 2026

Prepared by

SGS Canada Inc.

Mine-life (in years)

ACCESS TO PROPERTY

ROAD ACCESS

AIRPORT ACCESS

AIRPORT NAME

ESTIMATED TRAVEL TIME

SITE VISIT AVAILABILITY

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