OSK.V..RESULTS

Osisko and Clifton Star Report 4.19 G/T Au Over 27.5 Metres at Duparquet 

 




MONTREAL, QUEBEC--(Marketwire - June 17, 2010) - Osisko Mining Corporation ("Osisko")(TSX:OSK)(FRANKFURT:EWX)and Clifton Star Resources Inc ("Clifton")(TSX VENTURE:CFO)(FRANKFURT:C3T) are pleased to announce results from twenty-two additional holes from the 2010 drill program and extended core sampling program at the Duparquet Project, located in the Abitibi region of Quebec. Drilling and extended sampling on selected holes are focused on three properties: Beattie, Donchester (eastern extension of Beattie) and Duquesne. The current Phase I drill program comprises 65,000 metres of drilling on the Beattie property (of the overall 2010 Duparquet Project drilling campaign planned for 120,000 metres). To date approximately 52,800 metres from Phase I have been completed as 148 holes. New drilling is planned to focus on the Donchester Property. The property-wide drill program is progressing on schedule with 10 drills currently on site. Additional results are expected to be received and released on a regular basis as they become available from the lab.


Significant new intersections from the new drill holes listed below (from the Beattie property) include 27.5 metres averaging 4.19 g/t Au (BD10-115), and 58.2 metres averaging 1.12 g/t Au (BD10-138). Assay results are summarized in the table below:


Beattie-Donchester Properties