Griffin Mining Ltd (“the Company”) announces that on 12th April 2011 Panmure Gordon purchased 150,000 of the Company’s own ordinary shares (“Ordinary Shares”) at an average price of 61.5p per share on behalf of the Company in accordance with the irrevocable and non-discretionary arrangement with Panmure Gordon, as announced on 1st February 2011. The Ordinary Shares have been purchased for cancellation (the “Purchase and Cancellation”).

The purchase represented 0.08% of the Company’s issued share capital before the Purchase and Cancellation and was pursuant to the byelaws of the Company and a resolution passed by the directors.

Following the cancellation of these Ordinary Shares there will be 177,016,830 Ordinary Shares in the Company in issue. There are no shares held in treasury.