Prairie Lake Earns Discovery of the Year in Northwestern Ontario

MONTREAL, QUEBEC--(Marketwired - April 24, 2015) - MDN Inc. (TSX:MDN) (the "Company") is pleased to announced that Rudy Wahl, one of the owner of the recently optioned property Prairie Lake, received the Bernie Schnieders Discovery of the Year award for Prairie Lake, by the Northwestern Ontario Prospectors Association ("NWOPA").

The award recognizes an exceptional discovery in Northwestern Ontario during the previous calendar year and it was presented to Rudy Wahl at the NWOPA Awards Dinner in Thunder Bay on April 14, 2015.

In 2014, Mr. Wahl discovered numerous high grade niobium, tantalum and phosphate occurrences on Prairie Lake with assay up to 1.63% Nb₂O₅ on grab samples and confirmed by a Geological Survey team of the Ministry of Northern Development and Mines in Thunder Bay ("MNDM").

Earlier this year, MDN signed two option agreements to acquire 100% of the Prairie Lake and Prairie Lake South properties with the intention to start a first phase exploration program in the course of 2015.

"We are extremely pleased to see this award being granted to the property we optioned in February", commented Claude Dufresne, President and CEO. "Northwestern Ontario is a very large territory, which demonstrates the magnitude of the discovery," added M. Dufresne.

Jacquelin Gauthier, geological engineer, acted as the qualified person as defined in National Instrument 43-101 and approved the technical and scientific content of this press release.

About MDN (TSX:MDN)

MDN Inc. is a mining exploration and development company with properties in Quebec and Tanzania. In Quebec, MDN holds a 72.5% interest in Crevier Minerals Inc., which owns a NI 43-101 niobium-tantalum resource and 100% of the Samaqua property.

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Forward-Looking Statements

This press release contains forward-looking statements. 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. 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.