FOR:  DENISON MINES LIMITED
                   TSE SYMBOL:  DEN
                   JULY 27, 2000
                   Denison Reports Second Quarter Earnings
                   TORONTO, ONTARIO--Denison Mines Limited reported earnings of                   $388,000 for the three months ended June 30, 2000. This compares                   with earnings of $6,640,000 in the second quarter of 1999. Revenue                  in the second quarter was $6,622,000, which included $4,467,000                   from uranium sales, compared with $1,841,000 in the second quarter                  of 1999. Earnings for the six months ending June 30 were                   $1,600,000 ($0.01 per share) compared with $6,293,000 ($0.02 per                   share) in the corresponding period of 1999. Earnings for the                   second quarter of 1999 and the six months ending June 30, 1999                   included a $6,067,000 reduction in the Company's provision for                   decommissioning its Greek operations. EBITDA for the six months                   ended June 30, 2000 was $9,782,000 compared with $6,377,000 for                   the six months ended June 30, 1999. 
                   As a result of new accounting rules, commencing in 2000, Denison's                  earnings are calculated using theoretical tax rates without being                   allowed to take into account the utilization of the existing                   non-capital loss carry forwards and excess tax pools that are in                   excess of $170 million. The net effect is that Denison is required                  to deduct a tax expense in computing net earnings, which in the                   second quarter was $344,000 ($1,179,000 year to date), in spite of                  the fact that this amount is not payable. The benefit arising from                  the use of existing tax pools is treated as an addition to                   retained earnings. 
                   Operations at the McClean Lake uranium facility are steadily                   improving.  Production in the second quarter increased to 27%                   above the design capacity of 6 million pounds per year and unit                   operating costs are declining. Environmental results, which have                   been well within maximum regulatory limits, are consistently                   improving. The optimal production rate in relation to our                   long-term contract markets is being determined. 
                   Uranium sales volumes in the second quarter and year to date are                   20% and 28%, respectively of scheduled sales volumes for 2000.                   Approximately 12% of uranium sales volume in 2000 is sensitive to                   spot prices at the time of delivery and all such sales occurred in                  the second quarter. Scheduled sales volumes for the third and                   fourth quarter 2000 are 19% and 53%, respectively of the total                   scheduled sales for 2000. 
                   Although DES was profitable in the quarter, both revenue and                   profit were significantly less than forecast. Proposals for two                   new major projects have been submitted. No significant new                   contracts were obtained during the quarter.  
                   Royalty receipts from Ecuador continue to be received. Full                   payment is now expected before the end of the first quarter 2001. 
                   Denison is entering into a joint venture agreement with a private                   company whereby Denison can earn a 50% working interest in up to                   8,500 acres in an oil exploration joint venture in Saskatchewan.                   At least seven separate prospects have been identified and Denison                  has committed to pay 70% of the cost to drill one well on at least                  two of these prospects following completion and interpretation of                   a 3D seismic program. This commitment will cost approximately                   $600,000. Drilling is expected to start in October 2000. 
                   /T/
                   Consolidated Statement of Earnings (Unaudited)                          (In thousands except per share data)                          ------------------------------------------------------------------------                                                                          Six Months Ended                                                      Second Quarter          June 30                                                       ---------------      ----------------                                                        2000    1999         2000     1999                                                     ------- -------      -------  -------
                   Revenue                            $ 6,622  $1,841      $12,593  $ 2,186                                                     ------- -------      -------  -------                  Operating and exploration costs      3,757     722        5,785      899                   Interest expense                     1,488       -        2,765        -                  Decrease in provision for Greek                   oil field decommissioning               -  (6,067)           -   (6,067)                  General corporate expenses             608     715        1,227    1,528                   Investment income                     (399)   (211)        (682)    (531)                                                     ------- -------      -------  -------                                                       5,454  (4,841)       9,095   (4,171)                                                     ------- -------      -------  -------
                   Earnings before income and                   resource taxes                      1,168   6,682        3,498    6,357                   Income and resource taxes              780      42        1,898       64                                                      ------- -------      -------  -------                  Net earnings for the period        $   388 $ 6,640      $ 1,600  $ 6,293                                                      ------- -------      -------  -------                                                     ------- -------      -------  -------
                   Net earnings per Common Share      $  0.01 $  0.02      $  0.01  $  0.02                                                      ------- -------      -------  -------                                                     ------- -------      -------  -------
                   Consolidated Statement of Retained Earnings  (Unaudited)                  (In thousands)                          ------------------------------------------------------------------------                                                                          Six Months Ended                                                      Second Quarter          June 30                                                       ---------------      ----------------                                                        2000    1999         2000     1999                                                     ------- -------      -------  -------                  Net earning for the period         $   388 $ 6,640        1,600  $ 6,293                   Benefit of utilizing previously                   unrecognized future income tax                           assets (note 1)                       344       -        1,179        -                                                     ------- -------      -------  -------                                                         732   6,640        2,779    6,293
                   Retained Earnings                   - Beginning of Period              66,877  52,190       64,830   52,537                                                     ------- -------      -------  -------                  Retained Earnings - End of Period  $67,609 $58,830      $67,609  $58,830                                                      ------- -------      -------  -------                                                     ------- -------      -------  -------
                   Segmented Information (Unaudited)                          (In thousands)                          ------------------------------------------------------------------------                                                                          Six Months Ended                                                      Second Quarter          June 30                                                       ---------------      ----------------                                                        2000    1999         2000     1999                                                     ------- -------      -------  -------
                   Revenue                            Mining                           $ 5,131 $ 1,841      $ 7,756  $ 2,186                     Oil and gas                        1,491       -        4,837        -                                                      ------- -------      -------  -------                                                     $ 6,622 $ 1,841      $12,593  $ 2,186                                                      ------- -------      -------- -------                                                     ------- -------      -------- -------                  Net earnings (loss)                            Mining                           $ 1,037 $ 1,052      $ 1,295  $   930                     Oil and gas                        1,488   6,109        4,987    6,399                     Corporate and other                 (305)   (521)        (738)  (1,036)                    Interest expense                  (1,488)      -       (2,765)       -                     Federal and Saskatchewan                     income taxes                       (344)      -       (1,179)       -                                                      -------  ------      -------  -------                                                     $   388 $ 6,640      $ 1,600  $ 6,293                                                     -------  ------      -------  -------                                                     -------  ------      -------  -------
                   Consolidated Statement of Cash Flow (Unaudited)                          (In thousands)                          ------------------------------------------------------------------------                                                                          Six Months Ended                                                      Second Quarter          June 30                                                       ---------------      ----------------                                                        2000    1999         2000     1999                                                     ------- -------      -------  -------                   Operating Activities                          Net earnings for the period        $   388 $ 6,640      $ 1,600  $ 6,293                  Adjustments for non-cash items:                             Depreciation, depletion and                    amortization                       1,905      11        3,519       20                    Gain on sale of assets                  -     (66)        (141)     (86)                   Benefit of utilizing previously                    unrecognized future income tax                    assets (note 1)                      344       -        1,179        -                    Decrease in provision for Greek                    oil field decommissioning              -  (6,067)           -   (6,067)                   Increase (decrease) in taxes                    payable after July 1, 2000 and                    future income and resource taxes     (23)     29            7      (31)                                                     ------- -------      -------  -------                                                       2,614     547        6,164      129                  Decrease (increase) in operating                   working capital                    (6,777)  1,039      (18,865)    (581)                  Spending on Greek oil field                   decommissioning costs                   -  (4,325)           -   (8,957)                  Spending on Elliot Lake                   decommissioning and                   reclamation costs                    (105)   (900)        (105)    (900)                                                     ------- -------      -------  -------                  Net cash used in operating                   activities                         (4,268) (3,639)     (12,806) (10,309)                                                     ------- -------      -------  -------
                   Financing Activities                          Borrowings on loan facility          5,444   5,530        3,863    7,971                                                     ------- -------      -------  -------                                            Investing Activities                            Proceeds on sale of assets              22      66          163       86                   Additions to property, plant                   and equipment                        (467) (6,728)        (850) (10,629)                  Sale (purchase) of marketable                   securities                            459  (1,473)       2,110   (1,473)                  Decrease in restricted cash              -   2,794            -    3,045                                                      ------- -------      -------  -------                                                          14  (5,341)       1,423   (8,971)                                                     ------- -------      -------  -------
                   Increase (Decrease) in Cash                   and Cash Equivalents                1,190  (3,450)      (7,520) (11,309)                  Cash and Short-term Deposits                    - Beginning of Period              14,424  15,956       23,134   23,815                                                     ------- -------      -------  -------                  Cash and Short-term Deposits                   - End of Period                   $15,614 $12,506      $15,614  $12,506                                                      ------- -------      -------  -------                                                     ------- -------      -------  -------
                   Consolidated Balance Sheet (Unaudited)                     (In thousands)                     ------------------------------------------------------------------------                                                                    June 30    December 31                                                                        2000           1999                                                                   ---------    -----------                  ASSETS                      Cash and short-term deposits                   $  15,614    $    23,134                   Marketable securities                              2,826          4,936                   Accounts receivable                                6,415         24,586                   Product inventory                                  6,324            261                   Raw materials, supplies and prepaid expense        2,225          1,984                   Net property, plant and equipment                141,358        145,289                                                                  ---------    -----------                                                                  $ 174,762    $   200,190                                                                  ---------    -----------                                                                  ---------    -----------
                   LIABILITIES                      Accounts payable and accrued liabilities       $   7,945    $    39,703                   Current taxes payable                                530            768                   Income and resource taxes due after                    July 1, 2000                                      4,050          3,941                   Long-term debt                                    71,980         68,117                   Provision for post-employment benefits            11,700         11,900                   Provision for Elliot Lake mine                    decommissioning and reclamation cost              7,439          7,544                   Future income and resource taxes                   2,580          2,458                                                                  ---------    -----------                                                                    106,224        134,431                  SHAREHOLDERS' EQUITY                               68,538         65,759                                                                  ---------    -----------                                                                  $ 174,762    $   200,190                                                                  ---------    -----------                                                                  ---------    -----------
                   Notes to Consolidated Financial Statements (Unaudited)
                   1. As required by the new rules of the Canadian Institute of Chartered                     Accountants ("CICA"), the Company has adopted the liability method of                     accounting for income taxes effective January 1, 2000. The new CICA                     rules require computation of the Federal and Saskatchewan income tax                     provision  using theoretical tax rates which currently apply without                     being allowed to record and take advantage of the offsetting                     reduction to taxable income as a result of utilizing  previously                      unrecognized tax  deductions. As a result, year-to-date net earnings                     have been reduced  by $1,179,000. This additional expense, included                     in income and resource taxes on the Consolidated Statement of                     Earnings, does not increase liabilities, since the benefit of                     utilizing these tax deductions is considered to be an adjustment to                     asset values assigned at the time of the restructuring and therefore                     $1,179,000 has been credited to Retained Earnings. Prior year results                     have not been restated. 
                      The net impact of the new CICA rules is that Denison has deducted a                     tax expense in computing net earnings and earnings per share under                     the new method when no actual tax liability exists corresponding to                     this increased expense.
                      The Company now has in excess of $170 million of non capital losses                      and capital cost allowances, together with substantial earned                      depletion and net capital losses which can be carried forward to                      shelter its future earnings from federal and provincial income taxes,                      except in Ontario.  The resulting benefit of these deductions will be                      recognized in the future as an increase in Retained Earnings to                     offset the tax expenses shown in earnings.
                   2. A Greek court has determined that further payments should be made to                      227 of the former unionized employees of the Company's Prinos oil                      operations where production ceased in November 1998. As many of the                      employees were employed or received other compensation during 1999                     that reduces the amount awarded to them, it is difficult to assess                      the magnitude of the judgement, which could range up to $11 million.                     An appeal has been filed and a hearing is scheduled for October 14,                      2000. The closing of Greek operations was accepted as valid by the                      Greek State in an agreement dated November 16, 1999 which was                      subsequently ratified by the Greek Parliament. The results of an                      appeal cannot be determined at this time. The Company has an accrual                      of $1.8 million at June 30, 2000 to cover any remaining liabilities                      in Greece.
                   3. As of July 26, 2000 the Company has 317,871,201 Common Shares issued                      and outstanding. On a fully diluted basis, after giving effect to the                     exercise of Common Share Purchase Warrants and stock options, the                      Company would have 345,856,201 Common Shares issued.
                   /T/
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                   FOR FURTHER INFORMATION PLEASE CONTACT:                  Denison Mines Limited                  E. Peter Farmer                  President and Chief Executive Officer                  (416) 979-1991 Ext. 231 |