BUILDING ONE
OF THE WORLD'S
LARGEST URANIUM MINES
CORPORATE PRESENTATION
SEPTEMBER 2026
OUR JOURNEY TO TODAY
2014
I. Discovery & studies
Arrow discovered
2017
2021
2023
2019
MAR 2026
Preliminary economic assessment
Feisibility study
II. Permitting
Environmental assessment
& licencing began
III. Construction
Provincial approval
Final federal approval
Major construction began
JUN 2026
2
MORE THAN A DECADE
OF PROJECT DEVELOPMENT
Technical studies, environmental assessment and licensing completed
WHY ROOK I MATTERS
239.6 million lb U₃O₈
Probable reserves at Arrow
2.37% U₃O₈
Average reserve grade
10.7 years
Initial mine life
Up to 30 million lb / year
≈ one double decker bus by volume
ARROW RESERVE PROFILE
PRODUCTION POTENTIAL
≈ 20%
of current global primary uranium supply
of ore per day
3
PROJECT OVERVIEW
RESERVES AND PRODUCTION POTENTIAL
OPERATING SCALE
1,300 tonnes
WHERE WE ARE TODAY
4
ROOK I
CONSTRUCTION UPDATE
SERPTEMBER 2026
MAJOR CONSTRUCTION UNDERWAY
COMPLETE
3,000-foot airstrip
IN PROGRESS FOR THE REMAINDER OF 2026
Complete
SITE ACCESS
Active
SITE DEVELOPMENT
Active
SITE ACCESS
Additional 373-bed camp, bringing total capacity to 570 beds
Diffuser installation
Earthworks, roads and construction pads
Shaft terraces, foundations and freeze facilities
Construction of waste management and construction facility pads
Temporary facilities and utilities
Airstrip expansion to 5,840 feet
PROJECT SEQUENCE
4
CRITICAL PATH MANAGED
ROOK I
SCHEDULE OF MAJOR ACTIVITIES
PHASE 1
SITE DEVELOPMENT
BUILDING THE ESSENTIAL SURFACE INFRASTRUCTURE REQUIRED TO SUPPORT CONSTRUCTION AND OPERATIONS
ROOK I
SITE DEVELOPMENT
PHASE 2
SHAFT CONSTRUCTION
SHAFT CONSTRUCTION SCHEDULE
4
ROOK I
SHAFT CONSTRUCTION
24 MONTHS TO HITTING BASEMENT
The ground setting validated by testing provides very high confidence
with respect to the schedule and cost of shaft sinking once in the basement setting
HOW SHAFT CONSTRUCTION WORKS
ROOK I
SHAFT CONSTRUCTION
PHASE 3
BUILDING THE MINE
PERMANENT INFRASTRUCTURE · MILL AND PROCESSING FACILITIES · UNDERGROUND DEVELOPMENT
ROOK I
BUILDING THE MINE
OPERATING THE MINE
HOW ORE MOVES FROM UNDERGROUND TO FINISHED PRODUCT
ROOK I
OPERATING THE MINE
SAFETY, AUTOMATION AND INNOVATION
ROOK I
OPERATING THE MINE
THE BUILD AHEAD
2026
2027
2029
2030
2028
Site construction, infrastructure and
shaft-site preparation
ROOK I
WHY INVESTORS SHOULD CARE
PLANNED CONSTRUCTION SEQUENCE
Ground freezing,
exhaust-shaft pre-sinking and process-plant construction
Complete the exhaust shaft, advance the production shaft and begin underground development
Complete the production shaft, install material-handling systems and connect the underground workings
Commission the processing facilities and begin commercial production
MOBILIZE & PREPARE
FREEZE & PRE-SINK
GO UNDERGROUND
CONNECT THE MINE
FIRST ORE
A CLEAR, SEQUENCED PATH TO FIRST PRODUCTION
17
BUILDING ONE OF THE WORLD'S LARGEST, LOWEST-COST URANIUM MINES
ROOK I
LOOKING AHEAD
THE VISION
FROM CONSTRUCTION TODAY TO COMMERCIAL PRODUCTION
18
THANK YOU
ROOK I · SASKATCHEWAN, CANADA
QUESTIONS & DISCUSSION