TORONTO, ONTARIO -- (Marketwire) -- 12/13/12 -- QUEENSTON MINING INC. (TSX:QMI)(FRANKFURT:QMI)(OTCQX:QNMNF) ("Queenston" or the "Company") announces that proxy advisory firms Institutional Investor Services ("ISS") and Glass Lewis & Co. ("Glass Lewis") have recommended that shareholders of the Company vote in favour of the plan of arrangement involving the Company and Osisko Mining Corporation ("Osisko") under the Canada Business Corporations Act pursuant to which Osisko will acquire all of the outstanding common shares in the capital of the Company.

ISS and Glass Lewis are leading independent international corporate governance analysis and proxy voting firms. Their recommendations assist shareholders to make their decisions regarding proxy voting.

                      Attention Queenston Shareholders:                     
   Be sure to vote your proxy before 9:00 a.m. (Toronto time) on Tuesday,   
December 18, 2012. For more information and assistance in voting your proxy,
 please contact Kingsdale Shareholder Services Inc. at 1-866-581-1479 or by 
                email at contactus@kingsdaleshareholder.com.                

ABOUT QUEENSTON

Queenston is a Canadian mineral exploration and development company with a primary focus on its holdings in the historic Kirkland Lake gold camp comprising 230 square kilometres of prime exploration lands. The Company's assets include six 100%-owned gold deposits, all with NI 43-101 compliant mineral resources and ongoing exploration and development. The objective of the Company is to advance the flagship Upper Beaver project towards feasibility and production. The Upper Beaver project is progressing with Advanced Exploration leading to new shaft development in 2013.