September 9, 2008

Osisko Will Host a Conference Call Today

Osisko Mining Corporation ("Osisko") (TSX: OSK)(FRANFURT: EWX) will host a conference call today, September 9, at 1:30:00 PM Eastern Time where senior management and the Osisko Technical Group will discuss the recent resource update and will be available to respond to questions from analysts and investors. Those interested in participating in the conference call should dial in at 416-850-9144 (Toronto local and international), or 1-866-400-3310 (North American toll free). An operator will direct participants to the call.

 Contacts: Osisko Mining Corporation John Burzynski Vice-President Corporate Development 514-735-7131  Osisko Mining Corporation Daniel Boase Investor Relations 416-742-5600 or Toll Free: 1-866-580-8891

SOURCE: Osisko Mining Corporation