<SEC-DOCUMENT>0001193125-16-509874.txt : 20160318
<SEC-HEADER>0001193125-16-509874.hdr.sgml : 20160318
<ACCEPTANCE-DATETIME>20160318114506
ACCESSION NUMBER:		0001193125-16-509874
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20160318
FILED AS OF DATE:		20160318
DATE AS OF CHANGE:		20160318

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DENISON MINES CORP.
		CENTRAL INDEX KEY:			0001063259
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS METAL ORES [1090]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33414
		FILM NUMBER:		161515227

	BUSINESS ADDRESS:	
		STREET 1:		40 UNIVERSITY AVE., SUITE 1100
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5J 1T1
		BUSINESS PHONE:		(416) 979-1991

	MAIL ADDRESS:	
		STREET 1:		40 UNIVERSITY AVE., SUITE 1100
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5J 1T1

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERNATIONAL URANIUM CORP
		DATE OF NAME CHANGE:	19980603
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>d164016d6k.htm
<DESCRIPTION>6-K
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<HTML><HEAD>
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 <P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&nbsp;</P>
<P STYLE="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="margin-top:4pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>UNITED STATES </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>SECURITIES AND EXCHANGE COMMISSION </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>Washington, D.C. 20549 </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
<P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>FORM 6-K
</B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center> <P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>Report of Foreign Private Issuer </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>Pursuant to Rule 13a-16 or 15d-16 </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>of the Securities Exchange Act of 1934 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Date: March&nbsp;18, 2016 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Commission File Number: 001-33414 </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
<P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:24pt; font-family:Times New Roman" ALIGN="center"><B>Denison Mines
Corp. </B></P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>(Translation of registrant&#146;s name into English) </B></P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center> <P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>1100-40 University Avenue, Toronto Ontario, M5J 1T1 Canada </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(Address of principal executive offices) </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
<P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">Indicate by
check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">Form 20-F&nbsp;&nbsp;<FONT
STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Form 40-F&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#120;</FONT> </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):&nbsp;&nbsp;<FONT
STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT> </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by
Regulation S-T Rule 101(b)(7):&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT> </P> <P STYLE="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P>

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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Signatures </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned, thereunto duly authorized. </P> <P STYLE="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="bottom"><B>Denison Mines Corp.</B></TD></TR>
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<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000"><I>/s/ Amanda Willett</I></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Date: March&nbsp;18, 2016</TD>
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<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top">Amanda Willett</TD></TR>
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<TD VALIGN="bottom">Corporate Counsel and Corporate Secretary</TD></TR>
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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">EXHIBIT INDEX </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="bottom" NOWRAP ALIGN="center">Exhibit<BR>Number</TD>
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<TD VALIGN="bottom" NOWRAP>Description</TD></TR>


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<TD VALIGN="top" NOWRAP ALIGN="center">99.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">Press Release dated March&nbsp;17, 2016</TD></TR>
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<TYPE>EX-99.1
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<FILENAME>d164016dex991.htm
<DESCRIPTION>EX-99.1
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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>Exhibit 99.1 </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="top" ALIGN="right"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:9pt; font-family:arial" ALIGN="right">Denison Mines Corp.</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:9pt; font-family:arial" ALIGN="right">1100
&#150; 40 University Ave</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:9pt; font-family:arial" ALIGN="right">Toronto, ON M5J1T1</P>
<P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:9pt; font-family:arial" ALIGN="right">www.denisonmines.com</P></TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>PRESS RELEASE </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>DENISON ANNOUNCES POSITIVE METALLURGICAL </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>TEST RESULTS FOR THE GRYPHON DEPOSIT </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify"><B>Toronto, ON &#150; March&nbsp;17, 2016 </B>Denison Mines Corp. (&#147;Denison&#148; or the &#147;Company&#148;) (DML: TSX, DNN: NYSE MKT)
is pleased to announce the receipt of positive metallurgical test results from the Gryphon deposit, which support high rates of uranium recovery and the amenability of processing Wheeler River mine production at Denison&#146;s 22.5% owned McClean
Lake mill. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">&#147;Having announced a significant increase in the estimated mineral resources at Wheeler River in late 2015, Denison is in
the unique position of having a 60% interest in one of the largest and highest grade undeveloped uranium projects in the Athabasca Basin and an ownership interest in a state of the art uranium processing facility that is expected to have excess
capacity in future years&#148; said David Cates, President&nbsp;&amp; CEO of Denison. &#147;The preliminary testing results indicate Gryphon mine production will be suitable for processing at McClean Lake and will be incorporated into our upcoming
PEA for Wheeler.&#148; </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">The McClean Lake mill is one of the most technologically advanced uranium mills in operation and is uniquely able
to safely process the exceptionally high grades of Athabasca Basin ores without dilution. The McClean Lake mill is owned by the McClean Lake Joint Venture (&#147;MLJV&#148;), a joint venture between AREVA Resources Canada Inc. (&#147;AREVA&#148;)
(70%), Denison (22.5%)&nbsp;and OURD (Canada) Co. Ltd. (7.5%), and is operated by AREVA. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B><I>Positive Metallurgical Test Results from Gryphon
</I></B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">The Saskatchewan Research Council (&#147;SRC&#148;), under the guidance of Amec Foster Wheeler, completed a preliminary testing
program on a composite sample of mineralization provided by Denison from the Gryphon deposit on the Wheeler River property. The objective of the tests carried out by SRC was to determine the preliminary leaching process, leach residue settling,
raffinate composition, and purity of the U<SUB STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB STYLE="font-size:85%; vertical-align:bottom">8</SUB> product, using test conditions that emulated the McClean Lake mill flowsheet. The 22.8
kilogram composite sample contained 3.36% U<SUB STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB STYLE="font-size:85%; vertical-align:bottom">8</SUB> and was composed of drill cores from 10 separate drill holes spatially distributed
throughout the Gryphon deposit resulting in 26 individual core assays. A comparison to the geological assay database indicated the composite sample is a fair representation of the Gryphon deposit on key parameters. Key highlights from the test work
include: </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
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<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:10pt">A reasonable grind size of P<SUB STYLE="font-size:85%; vertical-align:bottom">100</SUB> = 300 &micro;m achieved good uranium liberation;
</P></TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
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<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:10pt">Leaching tests demonstrated from 95.4% to 98.8% of the uranium can be extracted in 8 hours and from 98.6% to 99.2% can be extracted in 12 hours;
</P></TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
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<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:10pt">Reasonable reagent consumption levels in line with other Athabasca Basin ores; </P></TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:10pt">Solvent extraction was effective in selectively extracting and purifying the uranium; and </P></TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:10pt">No abnormal challenges are expected for effluent treatment based on raffinate composition. </P></TD></TR></TABLE>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">Taken together, the results from the test samples show that a high purity U<SUB STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB
STYLE="font-size:85%; vertical-align:bottom">8</SUB> product can be produced, that meets all specifications from ASTM C967-13 &#147;Standard Specifications for Uranium Ore Concentrate&#148;. Amec Foster Wheeler has reviewed and approved the
metallurgical sampling, analytical and test work results on behalf of Denison. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B><I>Wheeler River Property </I></B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">The Wheeler River Property is host to both the Phoenix and Gryphon deposits. The Phoenix deposit is one of the highest grade undeveloped
deposits in the world, estimated to include indicated mineral resources of 166,400 tonnes and 70.2&nbsp;million pounds U<SUB STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB STYLE="font-size:85%; vertical-align:bottom">8</SUB> at a grade of
19.1% U<SUB STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB STYLE="font-size:85%; vertical-align:bottom">8. </SUB>Additionally, the Phoenix deposit is estimated to include an inferred mineral resources of 8,600 tonnes and 1.1&nbsp;million
pounds U<SUB STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB STYLE="font-size:85%; vertical-align:bottom">8</SUB> at a grade of 5.8%
U<SUB STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB STYLE="font-size:85%; vertical-align:bottom">8</SUB>. The Gryphon deposit is hosted in basement rock, approximately three kilometres to the northwest of Phoenix, and is estimated to
contain inferred mineral resources of 834,000 tonnes and 43.0&nbsp;million pounds U<SUB STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB STYLE="font-size:85%; vertical-align:bottom">8</SUB> at a grade of 2.3% U<SUB
STYLE="font-size:85%; vertical-align:bottom">3</SUB>O<SUB STYLE="font-size:85%; vertical-align:bottom">8</SUB>. The Wheeler River project is a joint venture between Denison (60%), Cameco Corp. (30%), and JCU (Canada) Exploration Company Limited
(10%). Denison is the operator and is currently evaluating the economics of co-developing the Gryphon and Phoenix deposits through the completion of a Preliminary Economic Assessment (&#147;PEA&#148;). </P>

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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">Both the McClean Lake mill and the Wheeler River project are located in the infrastructure rich
eastern portion of the Athabasca Basin in northern Saskatchewan. A provincial highway and power line run along the eastern edge of the Wheeler River property. This highway is used by other operations in the Athabasca Basin for transportation of
uranium ores and similar highways run along the majority of the route between Wheeler River and the McClean Lake mill. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B><I>Qualified Person
</I></B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">The disclosure regarding the metallurgical test results contained in this news release was prepared and approved by Peter Longo,
P. Eng, MBA, PMP, Denison&#146;s Vice-President, Project Development, who is a Qualified Person in accordance with the requirements of NI 43-101<B>.</B> </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify">The disclosure of a scientific or technical nature regarding the Phoenix and Gryphon deposits contained in this news release was prepared by
Dale Verran, MSc, Pr.Sci.Nat., Denison&#146;s Vice President, Exploration, who is a Qualified Person in accordance with the requirements of NI 43-101. For a description of the assay procedures and the quality assurance program and quality control
measures applied by Denison, please see Denison&#146;s Annual Information Form dated March&nbsp;5, 2015 filed under the Company&#146;s profile on SEDAR at www.sedar.com. </P>
<P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>About Denison </B></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify"><I>Denison is a uranium
exploration and development company with interests focused in the Athabasca Basin region of northern Saskatchewan. Including its 60% owned Wheeler River project, which hosts the high grade Phoenix and Gryphon uranium deposits, Denison&#146;s
exploration portfolio consists of numerous projects covering over 390,000 hectares in the eastern Athabasca Basin. Denison&#146;s interests in Saskatchewan also include a 22.5% ownership interest in the McClean Lake joint venture, which includes
several uranium deposits and the McClean Lake 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 61.55% 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. Internationally, Denison owns 100% of the Mutanga project in Zambia, 100% of the uranium/copper/silver Falea project in Mali,
and a 90% interest in the Dome project in Namibia. </I></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify"><I>Denison is also engaged in mine decommissioning and environmental services
through its Denison Environmental Services division and is the manager of Uranium Participation Corp., a publicly traded company which invests in uranium oxide and uranium hexafluoride. </I></P>
<P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>For more information, please contact </B></P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" ALIGN="center">


<TR>
<TD WIDTH="51%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD WIDTH="47%"></TD></TR>


<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:10pt">David Cates</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top" ALIGN="right">(416) 979-1991 ext. 362</TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">President and Chief Executive Officer</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top"></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Sophia Shane</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top" ALIGN="right">(604) 689-7842</TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Investor Relations</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top"></TD></TR>
</TABLE>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">2 </P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Cautionary Statement Regarding Forward-Looking Statements </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify"><I>Certain information contained in this press release constitutes &#147;forward-looking information&#148;, 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. </I></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify"><I>Generally, these forward-looking statements can be identified by the use of forward-looking terminology such as &#147;plans&#148;,
&#147;expects&#148;, &#147;budget&#148;, &#147;scheduled&#148;, &#147;estimates&#148;, &#147;forecasts&#148;, &#147;intends&#148;, &#147;anticipates&#148;, or &#147;believes&#148;, or the negatives and / or variations of such words and phrases, or
state that certain actions, events or results &#147;may&#148;, &#147;could&#148;, &#147;would&#148;, &#147;might&#148; or &#147;will be taken&#148;, &#147;occur&#148;, &#147;be achieved&#148; or &#147;has the potential to&#148;. In particular, this
press release contains forward-looking information pertaining to the following: the estimates of Denison&#146;s mineral resources; exploration, development and expansion plans and objectives and anticipated results of current activities; the
preparation the forward looking implications of the test results; the completion of a PEA; the processing ability and potential for future excess capacity at the McLean Lake mill; and expectations regarding ongoing joint ventures and Denison&#146;s
share of the same. Statements relating to &#147;mineral resources&#148; are deemed to be forward-looking information, as they involve the implied assessment, based on certain estimates and assumptions that the mineral resources described can be
profitably produced in the future. </I></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify"><I>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 cause the actual results, level of activity, performance or achievements of Denison to be materially different from those expressed
or implied by such forward-looking statements. Denison believes that the expectations reflected in this forward-looking information are reasonable but there can be no assurance that such statements will prove to be accurate 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 &#147;Risk Factors&#148; in Denison&#146;s Management&#146;s
Discussion and Analysis for the year ended December&nbsp;31, 2015 available under its profile at </I>www.sedar.com<I> and </I>www.sec.gov/edgar.shtml<I>. These factors are not, and should not be construed as being exhaustive. </I></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify"><I>Accordingly, readers should not place undue reliance on forward-looking statements. The forward-looking information contained in 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 release to conform such information to actual results or to changes in its expectations except as otherwise required by applicable legislation. </I></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="justify"><I></I><B><I>Cautionary Note to United States Investors Concerning Estimates of Measured, Indicated and Inferred Mineral Resources:
</I></B><I>This press release may use the terms &#147;measured&#148;, &#147;indicated&#148; and &#147;inferred&#148; 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. &#147;Inferred mineral resources&#148; have a great amount of uncertainty as to their existence, and as to their economic and legal feasibility. It cannot be assumed that
all or any part of an inferred mineral resource will ever be upgraded to a higher category. Under Canadian rules, estimates of inferred mineral resources may not form the basis of feasibility or other economic studies. </I><B><I>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.</I></B><I> </I></P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">3 </P>

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