As announced March 12, 2009, Silver Wheaton has made an offer to combine with Silverstone,
by way of plan of arrangement (the "Arrangement"), byexchanging 0.185 of a Silver Wheaton
share for each common share andspecial warrant of Silverstone. Capstone owns 24,042,340
common shares ofSilverstone and 2,747,428 special warrants, which are convertible into
common shares of Silverstone on a one-to-one basis at no additionalcharge, representing
26,789,768 shares of Silverstone in total, followingconversion. Upon completion of the
Arrangement, Capstone would own4,956,107 shares of Silver Wheaton. Completion of the
Arrangement issubject to certain conditions as set out in a joint press release between
Silver Wheaton and Silverstone dated March 12, 2009.