September 15, 2008 MDN Proves Extensions to the High-Grade Zones at Isambara 33.88 g/t gold over 2.9 m at 200 m south of the East Target and 10.51 g/t gold over 2 m between the East and Central Zone MONTREAL, QUEBEC--(Marketwire - Sept. 15, 2008) - MDN Inc. (TSX:MDN) is pleased to announce the results of diamond drill (DD) holes and of the last reverse circulation (RC) fence in the first phase of the 2008 drilling program on the Isambara project, located 28 km north of the Tulawaka Gold Mine in Tanzania. Drill hole ISDD-16 intersected 108.00 g/t gold over 1 m in a wider zone of 2.9 m grading 33.88 g/t gold. The intersection comes from the Isambara shear 200 m south of the East Target and 70 m below an intersection of 7.67 g/t gold over 1 m in ISRC-104 (reported on August 1, 2007). Drill hole ISRC-233 intersected 10.51 g/t gold over 2 m and drill hole ISRC-234 intersected 9.45 g/t gold over 1 m in the Isambara shear halfway between the closest intersections in the Central and East Targets linking the two mineralized zones. The Central and East Targets now contain continuous mineralization over 1,700 m of strike length and are still opened at depth and along strike. The results of these drill holes are the following: --------------------------------------------- Hole From To Length Assay (m) (m) (m) (g/t Au) --------------------------------------------- ISDD-13 39 41 2 1.13 --------------------------------------------- 43 46 3 1.76 --------------------------------------------- 71.55 73 1.45 1.23 --------------------------------------------- 88.25 89.45 1.2 4.04 --------------------------------------------- ISDD-15 154.9 156 1.1 4.27 --------------------------------------------- ISDD-16 71 72 1 1.38 --------------------------------------------- 94.1 97 2.9 33.88 --------------------------------------------- including 94.1 95 0.9 108.00 --------------------------------------------- ISDD-17 25 29 4 1.13 --------------------------------------------- 144 144.5 0.5 1.97 --------------------------------------------- ISDD-18 59 60 1 7.90 --------------------------------------------- ISDD-20 37 37.80 0.80 1.11 --------------------------------------------- 80.45 81.00 0.55 3.65 --------------------------------------------- 98 99 1 4.07 --------------------------------------------- 129.73 130.23 0.5 1.44 --------------------------------------------- ISDD-21 47 50 3 1.24 --------------------------------------------- ISDD-22 44 46 2 1.22 --------------------------------------------- ISRC-233 59 61 2 10.51 --------------------------------------------- ISRC-234 22 23 1 9.45 --------------------------------------------- 107 110 3 1.57 --------------------------------------------- - True widths of mineralized intersections are still unknown. These impressive results confirm additional gold mineralization along the Isambara shear and its attractiveness. The objective of the 2008 diamond drilling program was to following-up and understanding the geological controls of various RC intersections outside the East Target. The 10 DD holes totaling 1,817.60 m were widespread in the south of the license and mostly targeted satellite structures to the Isambara shear. The last fence of the first phase of the RC drill program was drilled in a swampy area between the East and the Central Zones not accessible earlier during the rainy season. It consisted in six drill holes totaling 593 m. All samples were analyzed by fire assay at the SGS laboratories in Tanzania, certified under international standards. A rigorous program of analytical grade verification implemented by MDN included 12% control samples. Technical information in this press release was verified and approved by geologist Dominique Fournier, Ph.D., who acted as a qualified person in accordance with NI 43-101. The Isambara licence is part of the Simba project, a partnership between MDN (70%) which is the operator, Lakota Resources (15%) of Toronto, and Jope Business Associates (15%) of Dar-es-Salaam. Isambara covers a territory of 40 km2 and is located 28 km north of the Tulawaka Gold Mine. MDN is a mining exploration company with its head office in Montreal, Quebec (Canada). Its main exploration activities are carried out in Quebec through gold and base metal interests and in Tanzania through a majority interest in 28 adjacent mineral licenses in addition to a 30% participation interest in the Tulawaka Gold Mine.

CONTACT INFORMATION: MDN Paul-A. Girard President & CEO +1-514-866-6500 or Dominique Fournier, Ph.D. +1-514-866-6500 www.mdn-mines.com or Evolution Group Sylvain Archambault President & CEO +1-514-448-4887 Toll free: +1-866-703-4887 www.evolutiongrp.com INDUSTRY: Manufacturing and Production - Mining and Metals