Rook I Project

legend of Rook1 Project
Located Southwestern Athabasca Basin, SK
NexGen Mineral Tenure
Arrow Deposit
Uranium Mills
Producing Mines

The Rook I Project (Project) is the largest development-stage uranium project in Canada. The proposed new underground mine and mill development is located in the uranium-rich district of the southwestern area of the Athabasca Basin; located in Saskatchewan – a premier mining jurisdiction.

Centred around the land-based, basement-hosted Arrow Deposit – one of the world’s leading resources – the Project maintains a robust economic profile and is being developed with elite ESG commitments focused on environmental protection and maximizing community benefit through a partnership approach.

01

Current Development Stage

Project Approvals

On November 18, 2024, NexGen reached a major milestone in the Federal Environmental Assessment (EA) process, whereby the CNSC provided NexGen formal confirmation that the Company has successfully addressed all information requests received as part of the Federal technical review.

Completion of the Federal EA technical review stage follows the CNSC having deemed NexGen’s Federal licence application sufficient in September 2023, and receipt of Provincial EA approval in November 2023.

The CNSC has proposed the Commission Hearing dates to be conducted on November 19, 2025 and February 9 to 13, 2026, subject to which the CNSC will render an approval decision on the Project.

03

Economic Benefits

Arrow Mineral Resource Estimate

Arrow Deposit, Probable Mineral Reserves

Arrow Deposit Production Profile

FS Mineral Resource
Structure Tonnage
(k tonnes)
Grade (U3O8%) Contained Metal (U3O8 M lb)
Measured
A2 LG 920 0.79 16.0
A2 HG 441 16.65 161.9
A3 LG 821 1.75 31.7
Total: 2,183 4.35 209.6
Indicated
A2 LG 700 0.79 12.2
A2 HG 56 9.92 12.3
A3 LG 815 1.26 22.7
Total: 1,572 1.36 47.1
Measured and Indicated
A2 LG 1,620 0.79 28.1
A2 HG 497 15.9 174.2
A3 LG 1,637 1.51 54.4
Total: 3,754 3.1 256.7
Inferred
A1 LG 1,557 0.69 23.7
A2 LG 863 0.61 11.5
A2 HG 3 10.95 0.6
A3 LG 1,207 1.12 29.8
A4 LG 769 0.89 15.0
Total: 4,399 0.83 80.7

* Scroll to the right to see the table data.

Probable Mineral Reserves
 Structure  Tonnage
(k tonnes)
Grade
(U3O8%)
Contained Metal
(U3O8 M lb)
A2 2,594 3.32% 190.0
A3 1,982 1.13% 49.5
Total 4,575 2.37% 239.6

* Scroll to the right to see the table data.

04

Mineral Reserves

Probable Mineral Reserves

Structure Tonnage (k tonnes) Grade (U3O8) Contained Metal (U3O8 M lb)
A2 2,594 3.32% 190.0
A3 1,982 1.13% 49.5
Total 4,575 2.37% 239.6