Exhibit 10 Big Cat Mining Corporation VIA FACSIMILE (403) 262-4177 January 6, 2005 Canadian Spirit Resources, Inc. Attention: Mr. Phillip D.C. Geiger, President and COO Suite 2610, Watermark Tower 530 8th Avenue S.W. Calgary, AB T2P 3S8 Dear Sirs, Re:...Mineral Option Amending Agreement • March 8th, 2006 • Big Cat Mining Corp • Gold and silver ores
