STRICTLY PRIVATE AND CONFIDENTIAL July 13, 2007 Northern Orion Resources Inc. 1075 West Georgia Street, Ste. 250 Vancouver, B.C. V6C 3C9 Attention: David Cohen, President and Chief Executive Officer Dear Mr. Cohen:Strictly Private and Confidential • July 19th, 2007 • Yamana Gold Inc • Gold and silver ores
This letter is to confirm in writing our agreement to amend the binding letter agreement between Yamana Gold Inc. and Northern Orion Resources Inc. dated June 27, 2007 (the “Letter Agreement”) as follows:
