June 14, 2010
CONSENT OF GORDON WATTS
United States Securities and Exchange Commission
In connection with Silver Wheaton Corp.’s registration statement on Form S-8 (File No. 333-128128), filed
under the United States Securities Act of 1933, as amended (the “Registration Statement”) I, Gordon Watts,
P.Eng., Senior Associate Mineral Economist of Watts, Griffis and McOuat Limited, hereby consent to the use of
my name in the Registration Statement and to the inclusion and incorporation by reference in the Registration
Statement of information derived from the technical report dated May 26, 2010 “Technical Report on the
Tayoltita, Santa Rita and San Antonio Mines, Durango, Mexico for Goldcorp Inc., Mala Noche Resources
Corp., and Silver Wheaton Corp.”.
/s/ Gordon Watts
Gordon Watts, P.Eng.
Senior Associate Mineral Economist
Watts, Griffis and McOuat Limited