Griffin Mining Ltd (“the Company”) announces that on 13th May 2011 it purchased 100,000 of the Company’s own ordinary shares (“Ordinary Shares”) at an average price of 54.75p per share. The Ordinary Shares have been purchased for cancellation (the “Purchase and Cancellation”).

The purchase represented 0.06% 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 175,801,830 Ordinary Shares in the Company in issue. There are no shares held in treasury.