Saturday, September 26, 2026
MiningNewsTerminal
Saturday, September 26, 2026 Admin

NXE.TO ·

Canadian Nuclear Safety Commission Approves NexGen Draft EIS to Proceed to Technical Review

Permits & Approvals

Canadian Nuclear Safety Commission Approves NexGen Draft EIS to Proceed to Technical

Review

Vancouver, BC, July 15, 2022 – NexGen Energy Ltd. (“NexGen” or the “Company”) (TSX: NXE, NYSE: NXE,

ASX: NXG) is pleased to announce that o n July 12, 2022, the Canadian Nuclear Safety Commission ( “CNSC”)

announced their acceptance of the draft Environmental Impact Statement (the “EIS”) which the Company

completed submission of in June 2022 (see News Release dated June 21, 2022). The acceptance of the draft EIS

for NexGen’s 100% owned Rook I Project (“Rook I” or the “Project”) located in Saskatchewan’s southwestern

Athabasca Basin follows a 30 -day period during which the CNSC conducted a conformance review of the draft

EIS submission and confirmed no comments or conditions . Further, t he acceptance marks the formal

commencement of the 90-day period during which the CNSC will coordinate both the Federal technical and public

review of the draft EIS.

Leigh Curyer, Chief Executive Officer commented: “The CNSC’s acceptance of the Rook I Project’s draft EIS

is a significant step, transitioning the Project into the Federal EIS technical and public review phase, incorporating

rigorous and transparent Provincial and Federal EA review processes. NexGen’s approach to all aspects of the EIS

compilation and completion with respect to inclusive Indigenous and community engagement, incorporating elite

environmental mine designs and its transparent engagement with regulators and governments is a credit to the

team and community stakeholders . On behalf of everyone at NexGen, I would like to thank all of our valued

stakeholders for their commitment and dedication to this multi-generational Rook I Project.

The magnitude of generational positive impact benefits to materialize with the safe advancement of this project,

starting with local communities and concluding with the avenue to return Canada to leading the world in the

provision of clean air energy fuel, has no peer.”

The EIS represents the collection of reports that document NexGen’s environmental assessment (“EA”) of the

Project. NexGen conducted the EA pursuant to The Environmental Assessment Act of Saskatchewan and the

Canadian Environmental Assessment Act, 2012. The information and analysis conducted and submitted in the EIS

represent the basis against which the environmental, social, and human health effects of the Project will be

evaluated by the Saskatchewan Ministry of Environment (“ENV”) and the CNSC. In parallel to the CNSC-led federal

review, the ENV is currently coordinating a technical review of the draft EIS, which is scheduled to conclude in Q3

2022.

The EIS and the EIS Master Executive Summary can both be found at www.saskatchewanuranium.ca or

www.nexgenenergy.ca.

About NexGen

NexGen is a British Columbia corporation focused on the development of the Rook I Project located in the

southwestern Athabasca Basin, Saskatchewan, Canada, into production. The Rook I Project is supported by a NI

43-101 compliant Feasibility Study which outlines elite environmental perfo rmance as well as industry leading

economics. Rook I hosts the Arrow Deposit that hosts Measured Mineral Resources of 209.6 M lbs of

U3O8 contained in 2.18 M tonnes grading 4.35% U3O8, Indicated Mineral Resources of 47.1 M lbs of U3O8 contained

in 1.57 M tonnes grading 1.36% U 3O8, and Inferred Mineral Resources of 80.7 M lbs of U 3O8 contained in 4.40

M tonnes grading 0.83% U3O8.

NexGen has a highly experienced team of uranium industry professionals with a successful track record in the

discovery of uranium deposits and in developing projects through discovery to production. The Company is the

recipient of the 2018 PDAC Bill Dennis Award for Canadian mineral discovery and the 2019 PDAC Environmental

and Social Responsibility Award.

Contact Information

Leigh Curyer

Chief Executive Officer

NexGen Energy Ltd.

+1 604 428 4112

[email protected]

www.nexgenenergy.ca

Travis McPherson

Senior Vice President Corporate Development

NexGen Energy Ltd.

+1 604 428 4112

[email protected]

http://www.nexgenenergy.ca

Technical Disclosure

All technical information in this news release has been reviewed and approved by Jason Craven , P.Geo, NexGen's

Manager, Exploration, a qualified person under National Instrument 43-101.

A technical report in respect of the FS is filed on SEDAR ( www.sedar.com ) and EDGAR

(www.sec.gov/edgar.shtml ) and is available for review on NexGen Energy's website (www.nexgenenergy.ca ).

Cautionary Note to U.S. Investors

This news release includes Mineral Reserves and Mineral Resources classification terms that comply with reporting

standards in Canada and the Mineral Reserves and the Mineral Resources estimates are made in accordance with

NI 43-101. NI 43-101 is a rule developed by the Canadian Securities Administrators that establishes standards for

all public disclosure an issuer makes of scientific and technical information concerning mineral projects. These

standards differ from the requirements of the Securities and Exchange Commission ("SEC") set by the SEC's rules

that are applicable to domestic United States reporting companies. Consequently, Mineral Reserves and Mineral

Resources information included in this news release is not comparable to similar information that would generally

be disclosed by domestic U.S. reporting companies subject to the reporting and disclosure requirements of the

SEC Accordingly, information concerning mineral deposits set fo rth herein may not be comparable with

information made public by companies that report in accordance with U.S. standards.

Forward-Looking Information

The information contained herein contains "forward -looking statements" within the meaning of applicable Un ited

States securities laws and regulations and "forward-looking information" within the meaning of applicable Canadian

securities legislation. "Forward -looking information" includes, but is not limited to, statements with respect to

mineral reserve and mineral resource estimates, the 2021 Arrow Deposit, Rook I Project and estimates of uranium

production, grade and long-term average uranium prices, anticipated effects of completed drill results on the Rook

I Project, planned work programs, completion of further site investigations and engineering work to support basic

engineering of the project and expected outcomes. Generally, but not always, forward -looking information and

statements can be identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled",

"estimates", "forecasts", "intends", "anticipates", or "believes" or the negative connotation thereof or variations of

such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be

taken", "occur" or "be achieved" or the negative connotation thereof. Statements relating to "mineral resources"

are deemed to be forward -looking information, as they involve the implied assessment that, based on certain

estimates and assumptions, the mineral resources described can be profitably produced in the future.

Forward-looking information and statements are based on the then current expectations, beliefs, assumptions,

estimates and forecasts about NexGen's business and the industry and m arkets in which it operates. Forward -

looking information and statements are made based upon numerous assumptions, including among others, that

the mineral reserve and resources estimates and the key assumptions and parameters on which such estimates

are based are as set out in this news release and the technical report for the property , the results of planned

exploration activities are as anticipated, the price and market supply of uranium, the cost of planned exploration

activities, that financing will be available if and when needed and on reasonable terms, that third party contractors,

equipment, supplies and governmental and other approvals required to conduct NexGen's planned exploration

activities will be available on reasonable terms and in a timely manner and that general business and economic

conditions will not change in a material adverse manner. Although the assumptions made by the Company in

providing forward looking information or making forward looking statements are considered reasonable by

management at the time, there can be no assurance that such assumptions will prove to be accurate in the future.

Forward-looking information and statements also involve known and unknown risks and uncertainties and other

factors, which may cause actual results, performances and achievements of NexGen to differ materially from any

projections of results, performances and achievements of NexGen expressed or implied by such forward -looking

information or statements, including, among others, the existence of negative operating cash flow and dependence

on third party financing, uncertainty of the availability of additional financing, the risk that pending assay results will

not confirm previously announced preliminary results, conclusions of economic valuations, t he risk that actual

results of exploration activities will be different than anticipated, the cost of labour, equipment or materials will

increase more than expected, that the future price of uranium will decline or otherwise not rise to an economic

level, the appeal of alternate sources of energy to uranium -produced energy, that the Canadian dollar will

strengthen against the U.S. dollar, that mineral resources and reserves are not as estimated, that actual costs or

actual results of reclamation activities are greater than expected, that changes in project parameters and plans

continue to be refined and may result in increased costs, of unexpected variations in mineral resources and

reserves, grade or recovery rates or other risks generally associated with mining, unanticipated delays in obtaining

governmental, regulatory or First Nations approvals, risks related to First Nations title and consultation, reliance

upon key management and other personnel, deficiencies in the Company's title to its properties, uninsurable risks,

failure to manage conflicts of interest, failure to obtain or maintain required permits and licences, risks related to

changes in laws, regulations, policy and public perception, as well as those factors or other risks as more fully

described in NexGen's Annual Information Form dated February 25, 2022 filed with the securities commissions of

all of the provinces of Canada except Quebec and in NexGen's 40 -F filed with the United States Securities and

Exchange Commission, which are available on SEDAR at www.sedar.com and Edgar at www.sec.gov .

Although the Company has attempted to identify important factors that could cause actual results to differ

materially from those contained in the forward -looking information or statements or implied by forward-looking

information or statements, there may be other factors that cause results not to be as anticipated, estimated or

intended. Readers are cautioned not to place undue reliance on forward -looking information or statements due

to the inherent uncertainty thereof.

There can be no assurance that forward -looking information and statements will prove to be accurate, as actual

results and future events could differ materially from those anticipated, estimated or intended. Accordingly, readers

should not place undue reliance on forward -looking statements or information. The Company undertakes no

obligation to update or reissue forward -looking information as a result of new information or events except as

required by applicable securities laws.