Exhibit 99.5
 DENISON MINES CORP.: EXHIBIT 99.5 TO FORM 40-F
FOR THE FISCAL PERIOD ENDED DECEMBER 31, 2010
 MINE SAFETY DISCLOSURE
   Mines thatReceived aNotice
    
    
    Anyfrom
    
    
    PendingNumber of
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    MSHA of
    
    
    LegalCitations
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    a Pattern
    
    
    Actionand
    
    
    
    
    
    
    Number
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    of
    
    
    beforeMines
    
    
    
    
    
    Number of
    
    
    Orders for
    
    
    
    
    
    
    of
    
    
    Total Dollar
    
    
    
    
    
    
    
    
    
    
    Violations
    
    
    FederalOperated
    
    
    
    
    
    Withdrawal
    
    
    Unwarrant
    
    
    Number of
    
    
    Imminent
    
    
    Value of
    
    
    Total Dollar
    
    
    
    
    
    
    or
    
    
    Mineby the
    
    Number
    
    
    Orders
    
    
    able
    
    
    Flagrant
    
    
    Danger
    
    
    Proposed
    
    
    Value of
    
    
    
    
    
    
    Potential
    
    
    SafetyCompany
    
    of Section
    
    
    Issued
    
    
    Failure
    
    
    Violations
    
    
    Orders
    
    
    Assessments
    
    
    Outstanding
    
    
    Number
    
    
    Thereof
    
    
    andDuring
    
    104(a)
    
    
    Under
    
    
    Under
    
    
    Under
    
    
    Under
    
    
    from MSHA
    
    
    Assessments
    
    
    of Mining
    
    
    Under
    
    
    Healththe
    
    S&S
    
    
    Section
    
    
    Section
    
    
    Section
    
    
    Section
    
    
    During the
    
    
    as at end of
    
    
    Related
    
    
    Section
    
    
    ReviewPeriod
    
    Citations2
    
    
    104(b)3
    
    
    104(d)4
    
    
    110(b)(2)5
    
    
    107(a)6
    
    
    Period7
    
    
    Period7
    
    
    Fatalities
    
    
    104(e)9
    
    
    CommissionSunday Mines Complex
    
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    $
    100.00
    
    
    $
    0.00
    
    
    Nil
    
   
    Nil
    
   
    NilBeaver/La Sal
    
    
    12
    
    
    Nil
    
   
    
    3
    
    
    Nil
    
   
    Nil
    
   
    $
    2,773.00
    
    
    $
    690.00
    
    
    Nil
    
   
    Nil
    
   
    NilPandora1
    
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    $
    5,000.00
    
    
    $
    0.00
    
    
    Nil8
    
    
    Nil
    
   
    NilRim
    
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    $
    0.00
    
    
    $
    0.00
    
    
    Nil
    
   
    Nil
    
   
    NilTony M
    
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    $
    100.00
    
    
    $
    0.00
    
    
    Nil
    
   
    Nil
    
   
    NilArizona 1
    
    
    7
    
    
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    $
    962.00
    
    
    $
    2,809.00
    
    
    Nil
    
   
    Nil
    
   
    NilPinenut
    
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    Nil
    
   
    $
    0.00
    
    
    $
    0.00
    
    
    Nil
    
   
    Nil
    
   
    Nil
 1.
    
    The Companys Pandora Mine was operated by an independent contractor during the period.
All entries in this table relate to citations, orders, violations, notices and assessments
issued or proposed to or against the Company. This table does not include citations, orders,
violations, notices or assessments issued or proposed to or against any independent
contractors and not to or against the Company.2.
    
    Citations and Orders are issued under Section 104 of the Federal Mine Safety and Health Act
of 1977 (30 U.S.C. 814) (the Act) for violations of the Act or any mandatory health or
safety standard, rule, order or regulation promulgated under the Act. A Section 104(a)
Significant and Substantial or S&S citation is considered more severe than a non-S&S
citation and generally is issued in a situation where the conditions created by the violation
do not cause imminent danger, but the violation is of such a nature as could significantly and
substantially contribute to the cause and effect of a mine safety or health hazard. It should
be noted that, for purposes of this table, S&S citations that are included in another column,
such as Section 104(d) citations, are not also included as Section 104(a) S&S citations in
this column.




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##### 



3.
    
    A Section 104(b) withdrawal order is issued if, upon a follow up inspection, an MSHA
inspector finds that a violation has not been abated within the period of time as originally
fixed in the violation and determines that the period of time for the abatement should not be
extended. Under a withdrawal order, all persons, other than those required to abate the
violation and certain others, are required to be withdrawn from and prohibited from entering
the affected area of the mine until the inspector determines that the violation has been
abated.4.
    
    A citation is issued under Section 104(d) where there is an S&S violation and the inspector
finds the violation to be caused by an unwarrantable failure of the operator to comply with a
mandatory health or safety standard. Unwarrantable failure is a special negligence finding
that is made by an MSHA inspector and that focuses on the operators conduct. If during the
same inspection or any subsequent inspection of the mine within 90 days after issuance of the
citation, the MSHA inspector finds another violation caused by an unwarrantable failure of the
operator to comply, a withdrawal order is issued, under which all persons, other than those
required to abate the violation and certain others, are required to be withdrawn from and
prohibited from entering the affected area until the inspector determines that the violation
has been abated.5.
    
    A flagrant violation under Section 110(b)(2) is a violation that results from a reckless or
repeated failure to
make reasonable efforts to eliminate a known violation of a mandatory health or safety standard
that substantially and proximately caused, or reasonable could have been expected to cause, death
or serious bodily injury.6.
    
    An imminent danger order under Section 107(a) is issued when an MSHA inspector finds that an
imminent danger exists in a mine. An imminent danger is the existence of any condition or
practice which could reasonably be expected to cause death or serious physical harm before
such condition or practice can be abated. Under an imminent danger order, all persons, other
than those required to abate the condition or practice and certain others, are required to be
withdrawn from and are prohibited from entering the affected area until the inspector
determines that such imminent danger and the conditions or practices which caused the imminent
danger no longer exist.7.
    
    These dollar amounts include the total amount of all proposed assessments from MSHA under the
Act during the period or outstanding at the end of the period, including proposed and
outstanding assessments for non-S&S citations that are not specifically identified in this
exhibit, regardless of whether the Company has challenged or appealed the assessment or
whether the assessment relates to a citation, violation or order issued or proposed during the
period.8.
    
    The Pandora mine was operated by an independent contractor during the period. There was one
fatality at the Pandora mine during the period, involving an employee of the contractor.9.
    
    A Notice is given under Section 104(e) if an operator has a pattern of S&S violations. If
upon any inspection of the mine within 90 days after issuance of the notice, or at any time
after a withdrawal notice has been given under Section 104(e), an MSHA inspector finds another
S&S violation, an order is issued, under which all persons, other than those required to abate
the violation and certain others, are required to be withdrawn from and prohibited from
entering the affected area until the inspector determines that the violation has been abated.
  2