Denison Reports Q2 2017 Results Including Highlights from Promising Summer 2017 Exploration Program
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Denison Mines Corp.
1100 – 40 University Ave
Toronto, ON M5J 1T1
www.denisonmines.com
PRESS RELEASE
DENISON REPORTS Q2 2017 RESULTS INCLUDING HIGHLIGHTS FROM
PROMISING SUMMER 2017 EXPLORATION PROGRAM
Toronto, ON – August 3, 2017 Denison Mines Corp. (“Denison” or the “Company”) (DML: TSX, DNN: NYSE MKT)
today filed its Consolidated Financial Statements a nd Management’s Discussion & Analysis (“MD&A”) for the period
ended June 30, 2017. Both documents are available on the Company’s website at www.denisonmines.com or on
SEDAR (at www.sedar.com ) and EDGAR (at www.sec.gov/edgar.shtml ). The highlights provided below are derived
from these documents and should be read in conjunct ion with them. All amounts in this release are in U.S. dollars
unless otherwise stated.
David Cates, President and CEO of Denison commented, “With the spot price of uranium correcting back into the low
US$20 per pound U 3O8 range through the end of the second quarter, we ar e reminded of the importance of building
uranium projects in the future, that can both susta in tough times and take advantage of good times, th rough the long
uranium cycle. Denison is very fortunate to be fully funded, with over CAD$50 million in cash and GIC’s on the balance
sheet at the end of the second quarter, and to have a controlling interest in the largest undeveloped high-grade uranium
project in the infrastructure rich eastern portion of the Athabasca Basin. Wheeler River has already evidenced its
potential to be a top tier mine in the future from our PEA in 2016, but also continues to deliver furt her high-grade and
thick intervals in new areas of mineralization at t he Gryphon deposit, which illustrate the potential for meaningful
resource growth.
We are looking forward to the completion of the sum mer 2017 exploration program at Wheeler, and the re sults of the
resource update that our exploration team is working on, as well as the resulting impact on our outlook for the Wheeler
River project going forward. Work continues on the pre-feasibility study, in parallel with the explor ation program, and
is providing us with an opportunity to carefully as sess the mining methods available for the Phoenix d eposit and all of
the options available to us to maximize the value of the Wheeler River project.”
Q2 2017 PERFORMANCE HIGHLIGHTS
Assay results increase the winter 2017 probe grades by 45% at Wheeler River’s Gryphon deposit
The assay results received from the Company’s winte r 2017 drilling program on the 60% owned Wheeler Ri ver
project showed a significant increase in grade comp ared to the previously released preliminary radiome tric probe
results. Assay grades greater than 0.5% U 3O8 were on average 45% higher than their correspondin g radiometric
equivalent eU 3O8 grades. The winter 2017 exploration program involved a combination of infill drilling at the Gryphon
deposit and resource expansion exploration drilling to the northwest of the Gryphon deposit – targeting mineralization
amongst the D series of lenses.
Gryphon D series lenses continue to deliver thick and high-grade intersections
Drill holes from the winter 2017 drilling program t esting for additional mineralization within the D s eries of lenses,
outside of the Gryphon resource area, returned results with the potential to add meaningful resources to the Gryphon
deposit - ahead of a planned update to the resource estimate for the project. The results were highlig hted by drill
hole WR-633D3 which intersected 19 metres of cumulative high-grade mineralization, including 3.3% U 3O8 over 13.5
metres, 6.2% U 3O8 over 2.5 metres and 1.3% U 3O8 over 3.0 metres. Follow-up drilling of WR-633D3, d uring the
summer 2017 program, has continued to deliver posit ive results. Preliminary radiometric equivalent pro be results
have included 3.5% eU 3O8 over 3.2 metres (including 4.1% eU 3O8 over 2.7 metre) in drill hole WR-621D2, 2.7%
eU 3O8 over 2.3 metres (including 4.5% eU 3O8 over 1.3 metres) in drill hole WR-691 and 3.2% eU 3O8 over 2.0 metres
(including 6.1% eU 3O8 over 1.0 metres) in drill hole WR-621D1.
Ongoing infill and delineation drilling for indicat ed resources on the Gryphon deposit continues to re turn
confirmatory high-grade and thick intersections, indicating the potential for further resource growth
A total of 31 infill and delineation holes have bee n completed to date, of the approximately 40 holes required to
upgrade the current inferred Gryphon resource to an indicated level of confidence. The assay results r eceived from
the winter 2017 drilling program continued to confirm the continuity and high-grades of the Gryphon deposit A, B and
C mineralized lenses and were largely consistent wi th the current inferred block model. Highlight prel iminary
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radiometric equivalent probe results to date, from the summer 2017 drilling program include 1.3% eU 3O8 over 25.3
metres (including 3.3% eU 3O8 over 7.8 metres) in drill hole WR-604D1, 4.1% eU 3O8 over 5.9 metres in drill hole WR-
692, 2.3% eU 3O8 over 9.3 metres in drill hole WR-564D1, 3.0% eU 3O8 over 7.0 metres (including 3.6% eU 3O8 over
5.7 metres) in drill hole WR-610D1, and 1.9% eU 3O8 over 8.4 metres in drill hole WR-570D1. The preliminary summer
2017 results also show good consistency with the current inferred block model, with drill holes WR-564D1 and WR-
570D1 indicating potential for resource growth in their respective areas of the deposit.
High-grade uranium discovered on the Waterbury Lake property
The first drill hole of the summer 2017 drilling pr ogram at the Waterbury Lake property returned a new high-grade
uranium intersection in the basement rock. Drill ho le WAT-17-443 intersected 1.1% eU 3O8 over 0.8 metres (from
296.9 to 297.7 metres) approximately 1.5 kilometres to the northeast of the property's J Zone uranium deposit. The
high-grade mineralization occurs immediately below a broader 10.3 metre mineralized interval (from 282 .8 to 293.1
metres) with an average grade of 0.15% eU 3O8. The mineralization is open in all directions and follow-up drilling is
presently underway.
Denison Environmental Services (“DES”) renews its cornerstone environmental services contract
DES has entered into a new two-year services agreement with Rio Algom Limited, a subsidiary of BHP Billiton Limited
("BHP") for the management and operation of nine decommissioned mine sites in Ontario and Quebec.
ABOUT DENISON
Denison was formed under the laws of Ontario and is a reporting issuer in all Canadian provinces. Denison’s common
shares are listed on the Toronto Stock Exchange (the “TSX”) under the symbol “DML” and on the NYSE American (the
“NYSE MKT”) exchange under the symbol “DNN”.
Denison is a uranium exploration and development co mpany with interests focused in the Athabasca Basin region of
northern Saskatchewan, Canada. In addition to its 6 0% owned Wheeler River project, which hosts the hig h grade
Phoenix and Gryphon uranium deposits, Denison's exp loration portfolio consists of numerous projects co vering
approximately 359,000 hectares in the Athabasca Bas in region, including 340,000 hectares in the infras tructure rich
eastern portion of the Athabasca Basin. Denison's interests in Saskatchewan also include a 22.5% ownership interest
in the McClean Lake joint venture (“MLJV”), which includes several uranium deposits and the McClean La ke uranium
mill, which is currently processing ore from the Cigar Lake mine under a toll milling agreement, plus a 25.17% interest
in the Midwest deposit and a 63.63% interest in the J Zone deposit on the Waterbury Lake property. Both the Midwest
and J Zone deposits are located within 20 kilometres of the McClean Lake mill.
Denison is engaged in mine decommissioning and environmental services through its Denison Environmental Services
(“DES”) division, which manages Denison’s Elliot La ke reclamation projects and provides post-closure m ine and
maintenance services to a variety of industry and government clients.
Denison is also the manager of Uranium Participatio n Corporation (“UPC”), a publicly traded company listed on the
TSX under the symbol “U”, which invests in uranium oxide in concentrates (“U 3O8”) and uranium hexafluoride (“UF 6”).
SELECTED QUARTERLY FINANCIAL INFORMATION
(in thousands) As at
June
30,
201 7
As at
December
31,
201 6
Financial Position:
Cash and cash equivalents $ 9,775 $ 11,838
Investment in debt instruments (GIC’s) $ 30,884 $ -
Cash, cash equivalents and GIC’s $ 40,659 $ 11,838
Working capital $ 35,649 $ 9,853
Property, plant and equipment $ 19 3,031 $ 187,982
Total assets $ 258,865 $ 217,423
Total long-term liabilities $ 64,410 $ 37,452
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201 7
201 6
(in thousands, except for per share amounts) Q2 Q2
Continuing Operations:
Total revenues $ 2,611 $ 3,663
Net loss $ (6,423 ) $ (3,832)
Basic and diluted loss per share $ (0.01) $ (0.01)
RESULTS OF CONTINUING OPERATIONS
Revenues
On February 13, 2017, Denison closed an arrangement under which Denison received an upfront payment of
$32,860,000 (CAD$43,500,000), in exchange for its right to receive future toll milling cash receipts from the MLJV under
the current toll milling agreement with the Cigar Lake Joint Venture (“CLJV”) from July 1, 2016 onwards. Following the
closing of the APG Transaction, CAD$1,947,000 in toll milling cash receipts were received from the MLJV, and for the
three months ended June 30, 2017, the Company recog nized toll milling revenue from the draw-down of de ferred
revenue of $638,000 and $992,000, respectively.
Revenue from DES during Q2 2017 was $1,713,000, whi le revenue from the Company’s management contract with
UPC was $260,000.
Operating expenses
Operating expenses in the Canadian mining segment i nclude depreciation, mining and other development c osts.
Operating expenses during Q2 2017 were $896,000, in cluding $745,000 of depreciation from the McClean L ake mill,
associated with the processing of U3O8 for the CLJV.
Operating expenses at DES during Q2 2017 totaled $1 ,484,000 and relate primarily to care and maintenan ce as well
as environmental consulting services provided to clients, and includes labour and other costs.
Exploration and Evaluation
During 2017, the Company has remained active on its portfolio of projects in the Athabasca Basin regio n in
Saskatchewan. The Company’s Athabasca land package increased during the second quarter from 356,597 hectares
(248 claims) to 359,313 hectares (249 claims) owing to the 51% interest earned in the Moon Lake South claim.
Denison’s share of exploration and evaluation expenditures was $2,537,000 during Q2 2017.
Wheeler River Project
Denison’s exploration and evaluation expenses on the Wheeler River Project, represents 75% of the Join t Venture’s
expenses, as part of a previously announced agreement (see press release Dated January 10, 2017) to fund a greater
share (ordinarily 60%) of the Joint Venture’s expenses in 2017 and 2018 in order to increase its inter est in the project
to up to approximately 66%.
Denison’s share of exploration costs at Wheeler River amounted to $1,223,000 during Q2 2017.
Field activities during Q2 2017 included conclusion of the winter 2017 drilling program in early April 2017 and
commencement of the summer 2017 drilling program in late May 2017.
Winter 2017 Highlights from Assay Results
During the winter 2017 drilling program, nine holes totalling 6,330 metres were completed outside of the current inferred
resources estimated for the Gryphon deposit, including four holes targeting the Gryphon D series lenses, and five holes
down-dip of the A and B series lenses. The assay re sults illustrate the potential for meaningful resou rce expansion at
Gryphon (See Denison’s press release dated May 26, 2017).
In addition to exploration drilling to expand miner alization outside of the current Gryphon resource, the 2017 winter
drilling program continued with infill and delineation drilling of the Gryphon deposit, with the objective of increasing the
level of confidence of the current inferred resourc es to an indicated level. A total of 17 infill and delineation drill holes,
totaling 8,402 metres, were completed during the winter program. In comparison to the previously reported radiometric
equivalent grade results, the assay results represented an overall increase in grade and thicknesses of mineralization.
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The assay results also confirm the continuity and high-grades of the Gryphon A, B and C series lenses that are included
in the current resource estimate for the deposit.
Summer 2017 Highlight Results
A total of 9,446 metres in 17 holes were completed as part of the summer 2017 drilling program through mid-July 2017.
Preliminary radiometric equivalent results were reported in our press release dated July 24, 2017. The summer drilling
program is expected to include approximately 18,000 metres in 40 holes, and includes infill and expans ion drilling to
potentially add indicated or inferred resources to the Gryphon deposit, and infill and delineation dri lling to bring the
current inferred resources to an indicated level of confidence.
Drilling continued within the Gryphon D series lenses to potentially add indicated or inferred resources to the Gryphon
deposit. A drill spacing of approximately 25 x 25 metres is being implemented around previous high-grade results which
included 3.3% U 3O8 over 13.5 metres, 6.2% U 3O8 over 2.5 metres and 1.3% U 3O8 over 3.0 metres in drill hole WR-
633D3, and 5.3% U3O8 over 11.0 metres in drill hole WR-641. Five drill holes, of approximately 10 holes planned, have
been completed within the D series lenses, all of which intersected high-grade mineralization.
Approximately 10 infill and expansion drill holes located outside of the Gryphon inferred resource area are planned for
the summer 2017 program. The objective of these dri ll holes is to add indicated resources to the areas surrounding
and within the Gryphon deposit’s A and B series len ses. Three holes have been completed, all of which intersected
mineralization including a highlight result of 5.3% eU 3O8 over 2.5 metres in drill hole WR-582D3.
Infill and delineation drilling on the Gryphon depo sit’s A, B and C series lenses also continues as part of the summer
2017 program, with nine holes completed to mid-July 2017. In total, 31 infill and delineation holes we re completed, of
the approximately 40 holes required to upgrade the current inferred resources of the Gryphon deposit t o an indicated
level of confidence.
Evaluation Program / PFS Activities
Denison’s share of evaluation costs at Wheeler Rive r amounted to $437,000 for Q2 2017, and mainly rela ted to the
work on the pre-feasibility study, which included engineering data collection activities, geotechnical and hydrogeological
work, and engineering investigations into alternate mining methods at Phoenix and options for shaft an d vent raise
excavation at both Gryphon and Phoenix. The Company also advanced its environmental baseline programs, and
continued with the community consultation and engagement process.
General and administrative expenses
Total general and administrative expenses were $1,1 97,000 during Q2 2017. These costs are mainly compr ised of
head office salaries and benefits, office costs in multiple regions, audit and regulatory costs, legal fees, investor
relations expenses, project costs, and all other costs related to operating a public company with listings in Canada and
the United States.
Other Income and expenses
During Q2 2017, the Company recognized a loss of $2 ,173,000 in other expenses, mainly due to a net los s of
$2,080,000 on the mark to market of investments carried at fair value.
LIQUIDITY AND CAPITAL RESOURCES
Cash and cash equivalents were $9,775,000 at June 3 0, 2017 compared with $11,838,000 at December 31, 2016. At
June 30, 2017, the Company also held investments in GICs of $30,884,000, which are categorized as shor t term
investments on the balance sheet. The Company holds the large majority of its cash, cash equivalents, and GIC’s in
Canadian dollars, amounting to CAD$52.8 million.
At June 20, 2017, Denison has restricted cash of $9,646,000, largely due to the terms of the Company’s revolving term
credit facility with the Bank of Nova Scotia (“BNS” ), which is restricted to non-financial letters of credit in support of
reclamation obligations. The facility requires the Company maintain CAD$9,000,000 pledged restricted cash on deposit
at BNS.
OUTLOOK FOR 2017
During Q2 2017, the Company increased its 2017 outl ook for mineral property exploration expense by $1, 050,000,
primarily because of higher than budgeted cost at t he Hook-Carter project, as well as a summer explora tion drilling
program at the Waterbury Lake project. The Company has also decreased its 2017 outlook for DES contrib ution by
$320,000, in order to reflect decreased care and ma intenance activities at certain sites, as well as a reduction in
consulting projects. The remainder of the 2017 outlook remains unchanged from the previously disclosed 2017 outlook.
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For more information, please contact
David Cates (416) 979 – 1991 ext 362
President and Chief Executive Officer
Sophia Shane (604) 689 - 7842
Investor Relations
Follow Denison on Twitter @DenisonMinesCo
QUALIFIED PERSON, ASSAY PROCEDURES AND FURTHER DETAILS
The disclosure of scientific or technical information regarding Denison’s properties in this press release and the MD&A
was prepared by, or reviewed and approved by, Dale Verran, P.Geo, MSc, Pr.Sci.Nat., the Company’s Vice President,
Exploration, a Qualified Person in accordance with the requirements of NI 43-101.
Grade results reported herein as “eU 3O8” refer to radiometric equivalent U 3O8 derived from a calibrated total gamma
down-hole probe. Radiometric equivalent U 3O8 results are preliminary in nature and all mineralized intervals have been
sampled and submitted for chemical U 3O8 assay in accordance with Denison’s technical procedures. All Gryphon drill
holes reported herein were drilled at a high angle to mineralization to allow for better evaluation of true thicknesses
which are expected to be approximately 75% of the intersection lengths. For further details regarding the description of
the assay procedures, data verification, and the qu ality assurance program and quality control measure s applied by
Denison, please see Denison’s Annual Information Form dated March 23, 2017 available under Denison's p rofile on
SEDAR at www.sedar.com, and its Form 40-F available on EDGAR at www.sec.gov/edgar.shtml .
Further details regarding the Gryphon deposit and t he current mineral resource estimates are provided in the NI 43-
101 Technical Report for the Wheeler River project titled "Preliminary Economic Assessment for the Whe eler River
Uranium Project, Saskatchewan, Canada" dated April 8, 2016 with an effective date of March 31, 2016. A copy of this
report is available on Denison's website and under its profile on SEDAR at www.sedar.com and on EDGAR at
www.sec.gov/edgar.shtml .
CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS
Certain information contained in this press release constitutes “forward-looking information", within the meaning of the
United States Private Securities Litigation Reform Act of 1995 and similar Canadian legislation concerning the business,
operations and financial performance and condition of Denison.
Generally, these forward-looking statements can be identified by the use of forward-looking terminolog y such as
"plans", "expects", "budget", "scheduled", "estimat es", “forecasts", "intends", "anticipates", or "bel ieves", or the
negatives and/or variations of such words and phras es, or state that certain actions, events or result s "may", "could",
"would", "might" or "will be taken", "occur", "be a chieved" or “has the potential to”. In particular, this press release
contains forward-looking information pertaining to the following: the likelihood of completing and benefits to be derived
from corporate transactions; use of proceeds from f inancing activities; expectations regarding further studies on
material properties, including the PFS; expectations regarding the toll milling of Cigar Lake ores; expectations regarding
revenues and expenditure from operations at DES; ex pectations regarding Denison’s ownership interests and
continuity of agreements with its partners; expectations regarding the provision of management services to UPC; capital
expenditure programs, estimated exploration and dev elopment expenditures and reclamation costs and Den ison's
share of same; and exploration, development and expansion plans and objectives and statements regarding anticipated
budgets. Statements relating to "mineral reserves" or "mineral resources" are deemed to be forward-loo king
information, as they involve the implied assessment , based on certain estimates and assumptions that t he mineral
reserves and mineral resources described can be profitably produced in the future.
Forward looking statements are based on the opinion s and estimates of management as of the date such s tatements
are made, and they are subject to known and unknown risks, uncertainties and other factors that may cause the actual
results, level of activity, performance or achievem ents of Denison to be materially different from tho se expressed or
implied by forward-looking statements. Denison bel ieves that the expectations reflected in this forwa rd-looking
information are reasonable but no assurance can be given that these expectations will prove to be accu rate and may
differ materially from those anticipated in this forward 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 Denison' s Annual
Information Form dated March 23, 2017 under the hea ding "Risk Factors". These factors are not, and sho uld not be
construed as being exhaustive. Accordingly, readers should not place undue reliance on forward-looking statements.
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The forward-looking information contained in this press release is expressly qualified by this cautionary statement. Any
forward-looking information and the assumptions mad e with respect thereto speaks only as of the date o f this press
release. Denison does not undertake any obligation to publicly update or revise any forward-looking information after
the date of this press release to conform such info rmation to actual results or to changes in Denison' s expectations
except as otherwise required by applicable legislation.
Cautionary Note to United States Investors Concerning Estimates of Measured, Indicated and Inferred Mineral
Resources: This press release may use the terms “measured”, “indicated” and “inferred” mineral resources. United
States investors are advised that while such terms are recognized and required by Canadian regulations , the United
States Securities and Exchange Commission does not recognize them. “Inferred mineral resources” have a great
amount of uncertainty as to their existence, and as to their economic and legal feasibility. It canno t be assumed that
all or any part of an inferred mineral resource wil l ever be upgraded to a higher category. Under Can adian rules,
estimates of inferred mineral resources may not form the basis of feasibility or other economic studies. United States
investors are cautioned not to assume that all or any part of measured or indicated mineral resources will ever
be converted into mineral reserves. United States investors are also cautioned not to assume that all or any
part of an inferred mineral resource exists, or is economically or legally mineable.