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

NXE.TO ·

NexGen Commences Winter Drill Program At Rook I

Exploration Programs

NexGen Commences Winter Drill Program At Rook I

Vancouver, BC, January 29, 2018 – NexGen Energy Ltd . (“NexGen” or the “Company”) (TSX:NXE, NYSE

MKT:NXE) is pleased to announce that the winter 2018 drill program has begun at our 100% owned, Rook I

property, in the Athabasca Basin, Saskatchewan.

The winter 2018 program will consist of approximately 25,000 m using eight drill rigs and focus on a n umber

of key objectives. At the Arrow Deposit, drilling w ill focus on further A3 high grade zone definition, targeting

the large untested areas surrounding the A1 – A5 shears, potential extensions of the shears particularly to the

north east, and definition of newly discovered high grade mineralization northwest of the A1 shear (see News

Release dated January 17, 2018). At South Arrow, dr illing will continue to focus on defining the exten t of

uranium mineralization in all directions. Further, highly ranked geophysical targets on the Arrow, South Arrow

and Mirror conductors will be targeted due to the results of geophysical surveys conducted predominantly in

2016 and 2017.

Development, Activities & Financial

• Pre-feasibility staged technical studies including geotechnical work, hydrogeological work, and

metallurgy continue in advance of the maiden Pre-Feasibility Study scheduled for Q3/2018.

• The Company has cash on hand of approximately $155 million.

Figure 1 shows the winter 2018 drilling areas. Figures 2 and 3 show the three-dimensional geophysical

signature of the Mirror target area. Figure 4 shows the high priority Area 8 resistivity low anomaly amongst

others. The association of these anomalies and mineralization at Arrow and South Arrow is evident.

Leigh Curyer, Chief Executive Officer, commented: “The Company is focusing on multiple objectives in 2018 in

parallel to drilling at Rook I. Key personnel appoi ntments in 2017 has placed NexGen in a solid positi on to

advance the various components of the Arrow Pre-Fea sibility Study and other studies focused on optimiz ing

the development of Arrow. The winter 2018 drilling will focus on testing in areas that hold high poten tial for

additional mineralized shears, extensions of existing mineralized shears and new high grade sub zones in close

proximity to Arrow. Further, drilling at South Arrow located 400 m south of Arrow, will continue to f ocus on

determining the extent of mineralization discovered in 2017. Additionally, the Company will begin to test highly

ranked geophysical targets within a 2 km radius of Arrow and along the Patterson Corridor, which is la rgely

unexplored on Rook I, yet hosts four known uranium mineralized zones. We look forward to delivering th e

results of drilling and the development studies throughout 2018.”

Figure 1: Winter Drilling Areas – ZTEM Resistivity – 450m Depth Slice

Figure 2: Mirror Target Area – Ground Gravity 3D Inversion

Figure 3: Mirror Target Area – ZTEM Resistvity 3D Inversion

Figure 4: Combined 2016 and 2017 3D Resistivity

About NexGen

NexGen is a British Columbia corporation with a foc us on the acquisition, exploration and development of

Canadian uranium projects. NexGen has a highly expe rienced team of uranium industry professionals with a

successful track record in the discovery of uranium deposits and in developing projects through discov ery to

production.

NexGen owns a portfolio of prospective uranium expl oration assets in the Athabasca Basin, Saskatchewan ,

Canada, including a 100% interest in Rook I, location of the Arrow Deposit in February 2014, the Bow discovery

in March 2015, the Harpoon discovery in August 2016 and the Arrow South discovery in July 2017. The Arrow

deposit’s updated mineral resource estimate with an effective date of December 20, 2016 was released i n

March 2017, and comprised 179.5 M lbs U3O8 contained in 1.18 M tonnes grading 6.88% U3O8 in the Indicated

Mineral Resource category and an additional 122.1 M lbs U3O8 contained in 4.25 M tonnes grading 1.30%

U3O8 in the Inferred Mineral Resource category.

Leigh Curyer

Chief Executive Officer

NexGen Energy Ltd.

+1 604 428 4112

[email protected]

www.nexgenenergy.ca

Travis McPherson

Vice President Corporate Development

NexGen Energy Ltd.

+1 604 428 4112

[email protected]

http://www.nexgenenergy.ca

For Media Inquiries:

Jonathan Goldberg

KCSA Strategic Communications

+1 212 896 1282

[email protected]

Technical Information

All scientific and technical information in this ne ws release has been prepared by or reviewed and app roved

by Mr. Garrett Ainsworth, P.Geo., Vice President – Exploration & Development for NexGen. Mr. Ainsworth is a

qualified person for the purposes of National Instrument 43-101 Standards of Disclosure for Mineral Projects

("NI 43-101"), and has verified the sampling, analytical, and test data underlying the information or opinions

contained herein by reviewing original data certificates and monitoring all of the data collection protocols.

For details of the Rook I Project including the quality assurance program and quality control measures applied

and key assumptions, parameters and methods used to estimate the mineral resource please refer to the

technical report entitled “Technical Report on the Preliminary Economic Assessment of the Arrow Deposi t,

Rook 1 Property, Province of Saskatchewan, Canada” dated effective September 1, 2017 (the “ Rook 1 Technical

Report ”) prepared by Jason J. Cox, David M. Robson, Mark B. Mathisen, David A. Ross, Val Coetzee and Mark

Wittrup, each of whom is a “qualified person” under NI 43-101. The Rook I Technical Report is availabl e for

review under the Company’s profile on SEDAR at www.sedar.com .

U.S. investors are advised that while the terms "indicated resources" and "inferred resources" are recognized

and required by Canadian regulations, the U.S. Securities and Exchange Commission does not recognize these

terms. U.S. investors are cautioned not to assume t hat any part or all of the material in these catego ries will

ever be converted into mineral reserves.

Forward-Looking Information

The information contained herein contains "forward- looking statements" within the meaning of the Unite d States

Private Securities Litigation Reform Act of 1995 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 the activities, events or developments that the Company expects or anticipates will or may occur in the future.

Generally, but not always, forward-looking information and statements can be identified by the use of words such as

“plans”, “expects”, “is expected”, “budget”, “sched uled”, “estimates”, “forecasts”, “intends”, “antici pates”, 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.

Forward-looking information and statements are base d on the then current expectations, beliefs, assump tions,

estimates and forecasts about NexGen’s business and the industry and markets in which it operates. Forward-looking

information and statements are made based upon nume rous assumptions, including among others, that the

proposed transaction will be completed, the results of planned exploration activities are as anticipated, the price of

uranium, the cost of planned exploration activities , that financing will be available if and when need ed 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 t he

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

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

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

projections of results, performances and achievemen ts of NexGen expressed or implied by such forward-l ooking

information or statements, including, among others, negative operating cash flow and dependence on thi rd party

financing, uncertainty of the availability of addit ional financing, the risk that pending assay result s will not confirm

previously announced preliminary results, imprecision of mineral resource estimates, the appeal of alternate sources

of energy and sustained low uranium prices, aboriginal title and consultation issues, exploration risks, 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 licenses, changes in laws,

regulations and policy, competition for resources a nd financing, and other factors discussed or referr ed to in the

Company’s Annual Information Form dated March 31, 2017 under “Risk Factors”.

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

from those contained in the forward-looking informa tion or implied by forward-looking information, the re may be

other factors that cause results not to be as anticipated, estimated or intended.

There can be no assurance that forward-looking info rmation and statements will prove to be accurate, a s 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 n o

obligation to update or reissue forward-looking inf ormation as a result of new information or events e xcept as

required by applicable securities laws.