SST Silverstone Resources Com Npv

Silverstone Resources Corp. ("Silverstone") (TSX VENTURE: SST) is pleased to announce that Silverstone's shareholders have approved the previously announced acquisition of Silverstone by Silver Wheaton Corp. ("Silver Wheaton") by way of plan of arrangement under the Business Corporations Act (British Columbia) (the "Arrangement"). At the special meeting of Silverstone shareholders held today, the Arrangement was approved by 74.67% of the votes cast by the Silverstone shareholders.

Pursuant to the Arrangement, Silver Wheaton will acquire all of the issued and outstanding common shares of Silverstone at an exchange ratio of 0.185 of a Silver Wheaton common share for each Silverstone common share. The closing of the Arrangement remains subject to final court approval, which Silverstone intends to seek from the British Columbia Supreme Court on May 20, 2009. Subject to court approval being obtained and the other conditions to closing being satisfied or waived, the Arrangement is expected to be effective on May 21, 2009.

Silverstone has received a notice from one Silverstone shareholder purporting to exercise dissent rights in respect of the Arrangement, in respect of 8,705,500 Silverstone common shares, representing approximately 7% of the issued and outstanding common shares of Silverstone. Completion of the Arrangement is subject to a condition in favour of Silver Wheaton that holders of no more than 5% of the Silverstone common shares exercise dissent rights. Silver Wheaton has indicated its intention to waive this condition and complete the Arrangement.

Further details regarding the terms of the Arrangement are set out in Silverstone's management information circular dated April 16, 2009, which is available at www.sedar.com.

CAUTIONARY NOTE REGARDING FORWARD LOOKING-STATEMENTS

This news release contains certain "forward-looking information" under applicable Canadian and United States securities laws concerning the proposed acquisition of Silverstone by Silver Wheaton. Forward-looking statements are based on the opinions and estimates of management at the date the statements are made, and are based on a number of assumptions and subject to a variety of risks and uncertainties and other factors that could cause actual events or results to differ materially from those projected in the forward-looking statements. Assumptions upon which forward-looking statements related to the proposed acquisition by Silver Wheaton of Silverstone include that the British Columbia Supreme Court will approve the plan of arrangement, that all other required third party regulatory and governmental approvals to the plan of arrangement will be obtained and all other conditions to completion of the plan of arrangement involving Silver Wheaton and Silverstone will be satisfied or waived. Many of these assumptions are based on factors and events that are not within the control of Silverstone and there is no assurance they will prove to be correct. Silverstone is under no obligation to update forward-looking statements if circumstances or management's estimates or opinions should change except as required by applicable securities laws. The reader is cautioned not to place undue reliance of forward-looking statements.

Contacts: Silverstone Resources Corp. Mark Patchett Investor Relations 604.637.8151 604.688.2180 (FAX) mpatchett@silverstonecorp.com www.silverstonecorp.com