SECOND QUARTER 2009 HIGHLIGHTS

- Revenue of $2,849,265 compared with $8,385,228 for the same period in 2008.

- Net income of $1,153,330 or $0.012 per share compared to $6,645,689 or $0.073 per share for the same period in 2008.

- The Tulawaka gold mine in Tanzania produced 24,561 ounces of gold with an average grade of 7.5 g/t at a recovery rate of 94.5%. MDN's 30% ownership interest in the Tulawaka gold mine gives it a pro-rata share equal to 7,368 ounces of gold.

- The total cash costs to produce an ounce of gold in the quarter were US$363.

- The Tulawaka gold mine sold 22,536 ounces of gold on the spot market at an average price of US$922 per ounce, generating gross income of US$20.8M. The MDN share (30%) is equal to 6,760 ounces of gold sold, for a gross income equal to US$6.2M.

- Closing of an investment transaction, on June 2, 2009, with the shareholders of Les Mineraux Crevier Inc. ("MCI"), including its main shareholder IAMGOLD Corporation ("IAMGOLD" or "IMG"), for the acquisition of 28.75% of the shares of MCI as well as the entire $1.5 million in convertible debentures, for a total amount of $2,325,000. The transaction provides to MDN the right to acquire up to 75% of the shares of MCI, over a maximum period of three years, in return for funding the development and feasibility study of a 43-101 compliant niobium and tantalum resource (the "Resource"), located in Quebec's Lac St-Jean Region.

- The MCI in situ Resource amounts to 47,895,000 kg of niobium oxide and 5,124,250 kg of tantalum oxide in the indicated category as well as 27,345,600 kg of niobium oxide and 3,443,520 kg of tantalum oxide in the inferred category (see table below).

 ----------------------------------------------------------------------- --                  Millions                 de tonnes 43-101Values    metriques   Ta2O5 g/t  Nb2O5 g/t    Ta2O5 kg     Nb2O5 kg ------------------------------------------------------------------------- Indicated(i)        25.75         199      1,860   5,124,250   47,895,000 ------------------------------------------------------------------------- Inferred(i)         16.88         204      1,620   3,443,520   27,345,600 ------------------------------------------------------------------------- (i) Cut-off grade of 1,000 g/t Nb2O5 included 

- As of May 25, 2009, and in compliance with regulatory authorities, MDN has posted on SEDAR (www.sedar.com) the 43-101 report on the Resource.

- Appointment on April 22, 2009, of Mr. Paul Gobeil on MDN'S Board of Directors. Paul Gobeil, F.C.A. is a recognized member of both Quebec and the international business communities. He is presently a Board member of the National Bank of Canada and acts as President of the Auditing and Risk Management Committee. He also serves on many other Boards including those of Metro, Diagnocure, Yellow Pages Income Fund, Munich Reinsurance Company of Canada, as well as several educational, cultural and charitable organizations.

- Following the notice of intent to proceed with a normal course issuer bid filed on March 24, 2009, with the Toronto Stock Exchange, the Company has purchased 116,500 shares at an average cost of $0.73 per share for a total amount of $85,495 during the second quarter.