Jean-Sebastien David and Claude Dufresne are Joining the Board of Directors of MDN Inc.

MONTREAL, QUEBEC--(Marketwired - Jun 12, 2014) - MDN inc. ("MDN") (TSX:MDN) is pleased to announce the appointment of Mr. Jean-Sébastien David and Mr. Claude Dufresne as directors of the company.

Born in the Saguenay-Lac-St-Jean region, Mr. David held the position of Chief Operating Officer of Arianne Phosphate Inc., a company working on the development of the mining project Lac au Paul in the Saguenay region. Before joining Arianne Phosphate Inc., Mr. David was Vice President Sustainable Development of Osisko Mining Corporation (2007-2012) where he was instrumental in obtaining the authorizations for the construction and the development of the Canadian Malartic Project. His experience with Arianne Phosphate and Osisko includes project evaluation, consultation and negotiation with regulatory agencies and stakeholders, including First Nations groups as well as the development and implementation of sustainable development policies. He has held various positions in the mining, forestry and environmental operations. He has also worked for Iamgold, Cambior and Louisiana-Pacific. He began his career at Nutrinor in 1993. He earned a BA in Geology and a Masters in Project Management from the Université du Québec à Chicoutimi.

Mr. Dufresne is currently President and CEO of MDN Inc.

The company would also like to announce the resignation of Mr. Marc Boisvert as Vice-President of Exploration and as Director of MDN inc., and the resignation of Mr. Serge Bureau as Director of MDN inc. Both Messrs. Boisvert and Bureau remain active with the company, but as consultants.

Commenting on the addition of Mr. David as Director of MDN inc. and the resignations of Messrs. Boisvert and Bureau, the Chairman, Serge Savard, said: "Firstly, we would like to acknowledge the contribution to the company of Messrs. Boisvert and Bureau, especially in the difficult environment of the recent years. They contributed to the development of MDN's exploration projects in Tanzania, including the discovery of Nikonga and Ikungu projects, and brought the development of the Crevier project past the preliminary economic phase. We are also please to announce the appointment of Mr. David to the board of MDN inc. His experience and involvement with the Saguenay community will bring a significant contribution to the development of the Crevier project."

About MDN (TSX:MDN)

MDN Inc. is an exploration and mining development company with properties in Quebec and Tanzania. In Quebec, MDN holds a 72.5% interest in Crevier Minerals Inc., which has a NI 43-101 compliance resource of niobium and tantalum, and is currently undergoing a feasibility study.

Forward-Looking Statements

Other than statements of historical fact, all statements in this release that address events or developments that the Company expects to occur are forward-looking statements. Although the Company believes that the expectations expressed in such forward-looking statements are based on reasonable assumptions, including but not limited to, Such statements are not guarantees of future performance, and actual results may differ materially from those in the forward-looking statements. Factors that could cause the actual results to differ materially from those in forward-looking statements are discussed in greater detail in the Company's most recent Annual Information Form filed on SEDAR, which also provides additional general assumptions in connection with these statements. Investors and others who base themselves on the Company's forward-looking statements should carefully consider the factors mentioned in the Annual Information Form, as well as the uncertainties they represent and the risk they entail. The Company believes that the expectations reflected in those forward-looking statements are reasonable, but no assurance can be given that these expectations will prove to be correct, and as such, the forward-looking statements in this press release should not be unduly relied upon. These statements speak only as of the date of this press release.

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Claude Dufresne, ing.President & CEOMDN Inc.514 866-6500, Ext. 221cdufresne@mdn-mines.comwww.mdn-mines.com