Denison CFO on Temporary Medical Leave of Absence, Interim CFO Appointed
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Denison Mines Corp.
1100 – 40 University Ave
Toronto, ON M5J 1T1
www.denisonmines.com
PRESS RELEASE
Denison CFO on Temporary Medical Leave of Absence,
Interim CFO Appointed
Toronto, ON – September 1, 2023. Denison Mines Corp. (‘Denison’ or the ‘Company’) (TSX: DML, NYSE
American: DNN) reports that Mac McDonald (CPA), the Company’s Chief Financial Officer, is on a
temporary medical leave of absence. Elizabeth Sidle (C PA, CA), who currently serves as Denison’s Vice
President Finance, has also been appointed Interim Chief Financial Officer.
About Denison
Denison is a uranium exploration and development company with interests focused in the Athabasca Basin
region of northern Saskatchewan, Canada. The Compan y has an effective 95% interest in its flagship
Wheeler River Uranium Project, which is the largest undeveloped uranium project in the infrastructure rich
eastern portion of the Athabasca Basin region of northern Saskatchewan. In mid-2023, a Feasibility Study
was completed for Wheeler River’s Phoenix deposit as an In-Situ Recovery (‘ISR’) mining operation, and
an update to the previously prepared PFS was completed for Wheeler River’s Gryphon deposit as a
conventional underground mining operation. Based on the respective studies, both deposits have the
potential to be competitive with the lo west cost uranium mining operations in the world. Permitting efforts
for the planned Phoenix ISR operation commenced in 2019 and have advanced significantly, with licensing
in progress and a draft Environmental Impact Statement (‘EIS’) submitted for regulator and public review
October 2022.
Denison’s interests in Saskatchewan also include a 22.5% ownership interest in the McClean Lake Joint
Venture, which owns several uranium deposits and the McClean Lake uranium mill, contracted to process
the ore from the Cigar Lake mine under a toll milling agreement, plus a 25.17% interest in the Midwest Main
and Midwest A deposits and a 67.41% interest in the Tthe Heldeth Túé (‘THT’) and Huskie deposits on the
Waterbury Lake property. The Midwest Main, Midwes t A, THT and Huskie deposits are located within 20
kilometres of the McClean Lake mill.
Through its 50% ownership of JCU (Canada) Exploration Co mpany, Ltd (‘JCU’), Denison holds additional
interests in various uranium project joint ventures in Canada, including the Millennium project (JCU,
30.099%), the Kiggavik project (JCU, 33.8118%) and Christie Lake (JCU, 34.4508%).
Denison’s exploration portfolio includes further in terests in properties covering approximately 285,000
hectares in the Athabasca Basin region.
For more information, please contact:
David Cates (416) 979-1991 ext. 362
President and Chief Executive Officer
Elizabeth Sidle (416) 979-1991 ext. 311
Vice President Finance & Interim Chief Financial Officer
Follow Denison on Twitter @DenisonMinesCo
This press release constitutes a "designated news release" for the purposes of the Company's prospectus
supplement dated September 28, 2021 to its short form base shelf prospectus dated September 16, 2021.
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Cautionary Statement Regarding Forward-Looking Statements
Certain information contained in this pre ss release constitutes ‘forward-looking info rmation’, within the meaning of the applic able
United States and Canadian legislation conc erning the business, operations and financ ial performance and condition of Denison.
Generally, these forward-looking statements c an be identified by the use of forward-look ing terminology such as ‘plans’, ‘expects’,
‘budget’, ‘scheduled’, ‘estimates’, ‘forecasts’, ‘intends’, ‘anticipates’, or ‘believes’, or the negatives and/or variations of such words and
phrases, or state that certain actions, events or results ‘may’, ‘could’, ‘would’, ‘might’ or ‘will be taken’, ‘occur’, ‘be achieved’ or ‘has
the potential to’.
In particular, this press release contains forward-looking information pertaining to the following: expectations with respect to the leave
of absence and Interim CFO appointment; in terpretations, projections and plans with respect to ex ploration, development and
expansion of the Company’s projects; expectations regarding Denison’s joint venture ownership interests; and expectations regarding
the continuity of its agreements with third parties.
Forward looking statements are based on the opinions and estimates of management as of the date such statements are made, and
they are subject to known and unknown risks, uncertainties and other factors that may c ause the actual results, level of activi ty,
performance or achievements of Denison to be materially different from those expre ssed or implied by such forward-looking
statements. Denison believes that the expectations reflected in this forward-looking information are reasonable, but no assurance can
be given that these expectations will prove to be accurate and results may differ ma terially from those anticipated in this for ward-
looking information. For a discussion in respect of risks and other factors that could influence forward-looking events, please refer to
the factors discussed in the Company’s Annual Information Form dated March 27, 2023 under the heading ‘Risk Factors’. These
factors are not, and should not be, construed as being exhaustive.
Accordingly, readers should not place undue re liance on forward-looking statements. The forward-looking information contained i n
this press release is expressly qualified by this cautionary statement. Any forward-looking information and the assumptions made with
respect thereto speaks only as of the date of this press release. Denison does not undertake any obligation to publicly update or revise
any forward-looking information after the date of this press rel ease to conform such information to actual results or to change s in
Denison's expectations except as otherwise required by applicable legislation.