Silver Wheaton Reports Record Quarterly Earnings

By Silver Wheaton Corp., PRNE
Sunday, November 7, 2010

VANCOUVER, November 9, 2010 - Silver Wheaton Corp. ("Silver Wheaton" or the "Company") (TSX, NYSE: SLW)
is pleased to announce its unaudited results for the third quarter ended
September 30, 2010.

    THIRD QUARTER HIGHLIGHTS
    -------------------------------------------------------------------------
    -   Net earnings more than doubled to a record US$69.2 million (US$0.20
        per share), compared with US$33.6 million (US$0.11 per share) in
        2009.

    -   Operating cash flows increased 55% to US$70.5 million (US$0.20 per
        share)(1), compared with US$45.4 million (US$0.14 per share)(1) in
        2009.

    -   Record attributable silver equivalent production of 5.9 million
        ounces (5.5 million ounces of silver and 7,000 ounces of gold),
        representing an increase of 41% over the comparable period in 2009.

    -   Silver equivalent sales of 4.7 million ounces (4.3 million ounces of
        silver and 7,100 ounces of gold), lagging production for the quarter
        due primarily to the build-up of concentrate inventory as the
        Penasquito mine ramps up production, as well as timing of concentrate
        shipments from the Yauliyacu and Campo Morado mines.

    -   As at September 30, 2010, approximately 2.2 million payable silver
        equivalent ounces attributable to the Company have been produced at
        the various mines and will be recognized in future sales as they are
        delivered to the Company under the terms of their contracts.

    -   Total cash costs(1) of US$4.09 per silver equivalent ounce, compared
        with US$4.08 per ounce in 2009.

    -   Cash operating margin(1) increased 42% compared to 2009, to a record
        US$15.72 per silver equivalent ounce, while average silver prices
        over the same period increased by 29%.

    -   Goldcorp Inc. announced that its world-class gold-silver-lead-zinc
        Penasquito mine achieved commercial production during the quarter
        with peak throughput rates as high as 105,000 tonnes per day. The
        ramp up to full production capacity of 130,000 tonnes per day is
        anticipated by early 2011. Annual production attributable to Silver
        Wheaton from the mine is expected to average approximately 7 million
        ounces of silver over the estimated 22 year mine life.

    -   Barrick Gold Corp.'s world-class gold-silver Pascua-Lama project
        remains on track to enter production in the first quarter of 2013,
        with detailed engineering and procurement nearing completion and
        earthworks underway. Once in production, Pascua-Lama is forecast to
        be one of the largest and lowest cost gold mines in the world with an
        expected mine life in excess of 25 years. In its first five years of
        operation, Silver Wheaton's attributable silver production is
        expected to average 9 million ounces annually.

    -   Goldcorp completed the sale of the San Dimas mine to Primero Mining
        Corp. In conjunction with the sale, Silver Wheaton amended its silver
        purchase agreement relating to the mine. The term of the silver
        purchase agreement, which was set to expire in 2029, has been
        extended to life of mine. During the first four years following
        closing of the transaction, Primero will deliver to Silver Wheaton a
        per annum amount equal to the first 3.5 million ounces of payable
        silver produced at San Dimas and 50% of any excess, plus Silver
        Wheaton will receive an additional 1.5 million ounces of silver per
        annum to be delivered by Goldcorp. Beginning in the fifth year after
        closing, Primero will deliver to the Company a per annum amount equal
        to the first 6 million ounces of payable silver produced at San Dimas
        and 50% of any excess. Goldcorp will continue to guarantee the
        delivery by Primero of all silver produced and owing to the Company
        until 2029, and a payment of US$0.50 per ounce for any shortfall
        below 215 million cumulative silver ounces delivered to Silver
        Wheaton by the end of 2031. Primero has provided Silver Wheaton with
        a right of first refusal on any metal stream or similar transaction
        it enters into.

    ----------------------
    (1) Refer to discussion on non-GAAP measures at the end of this press
        release.

"Silver Wheaton had record production in the quarter, anchored by the
continued successful ramp up of one of our cornerstone growth assets,
Goldcorp's world-class Penasquito mine in Mexico," said Peter Barnes, Chief
Executive Officer of Silver Wheaton. "Penasquito reached commercial
production during the quarter and expects to achieve full production capacity
in early 2011, in what promises to be another year of significant production
growth for Silver Wheaton."

"While quarterly sales were lower than production, due in part to the
build-up of concentrate inventory as Penasquito ramps up production, as well
as the timing of shipments from the Yauliyacu and Campo Morado mines, we
still achieved record earnings. Increased shipments in the fourth quarter are
expected to make up for the sales shortfall and we remain on track to meet
production guidance of 23.5 million silver equivalent ounces in 2010, growing
to approximately 40 million ounces by 2013."

"In an environment of continued economic uncertainty, investment demand
for silver remains very strong, and silver prices approached 30 year highs in
the quarter. This resulted in record cash operating margins of US$15.72 per
ounce, generating strong free cash flows to fund future growth."

"Lastly, during the quarter, Goldcorp finalized the sale of its San Dimas
mine to Primero Mining, an emerging mid-tier gold producer. In conjunction
with this, Silver Wheaton amended its silver purchase agreement, which
continues to provide Silver Wheaton with a Goldcorp guarantee, extends the
agreement from a fixed term to life-of-mine and, most importantly,
incentivizes Primero Mining to increase silver production at this
high-quality, low-cost, mine. San Dimas remains a key asset within our
portfolio and we are confident that the amended silver purchase agreement
will create additional long term value for our stakeholders."

This earnings release should be read in conjunction with Silver Wheaton's
unaudited MD&A and Financial Statements, which are available on the Company's
website at www.silverwheaton.com and have been posted on SEDAR at
www.sedar.com.

A conference call will be held Tuesday, November 9, 2010, starting at
11:00 am (Eastern Time) to discuss these results. To participate in the live
call use one of the following methods:

    Dial toll free from Canada or the US:   1-888-231-8191
    Dial from outside Canada or the US:     1-647-427-7450
    Pass code:                              15809030
    Live audio webcast:                     www.silverwheaton.com

Participants should dial in five to ten minutes before the call.

The conference call will be recorded and you can listen to an archive of
the call by one of the following methods:

    Dial toll free from Canada or the US:   1-800-642-1687
    Dial from outside Canada or the US:     1-416-849-0833
    Pass code:                              15809030
    Archived audio webcast:                 www.silverwheaton.com

About Silver Wheaton

Silver Wheaton is the largest silver streaming company in the world.
Forecast 2010 production, based upon its current agreements, is 22.0 million
ounces of silver and 28,000 ounces of gold, for total production of 23.5
million silver equivalent ounces. By 2013, annual production is anticipated
to increase significantly to approximately 40 million silver equivalent
ounces. This growth is driven by the Company's portfolio of world-class
assets, including silver streams on Goldcorp's Penasquito mine and Barrick's
Pascua-Lama project.

CAUTIONARY NOTE REGARDING FORWARD LOOKING-STATEMENTS

The information contained herein contains "forward-looking statements"
within the meaning of the United States Private Securities Litigation Reform
Act of 1995 and "forward-looking information" within the meaning of
applicable Canadian securities legislation. Forward-looking statements, which
are all statements other than statements of historical fact, include, but are
not limited to, statements with respect to the future price of silver and
gold, the estimation of mineral reserves and resources, the realization of
mineral reserve estimates, the timing and amount of estimated future
production, costs of production, reserve determination and reserve conversion
rates. Generally, these forward-looking statements can be identified by the
use of forward-looking terminology such as "plans", "expects" or "does not
expect", "is expected", "budget", "scheduled", "estimates", "forecasts",
"intends", "anticipates" or "does not anticipate", or "believes", or
variations of such words and phrases or statements that certain actions,
events or results "may", "could", "would", "might" or "will be taken",
"occur" or "be achieved". Forward-looking statements are subject to known and
unknown risks, uncertainties and other factors that may cause the actual
results, level of activity, performance or achievements of Silver Wheaton to
be materially different from those expressed or implied by such
forward-looking statements, including but not limited to: fluctuations in the
price of silver and gold; the absence of control over mining operations from
which Silver Wheaton purchases silver or gold and risks related to these
mining operations including risks related to fluctuations in the price of the
primary commodities mined at such operations, actual results of mining and
exploration activities, economic and political risks of the jurisdictions in
which the mining operations are located and changes in project parameters as
plans continue to be refined; and differences in the interpretation or
application of tax laws and regulations; as well as those factors discussed
in the section entitled "Description of the Business - Risk Factors" in
Silver Wheaton's Annual Information Form available on SEDAR at www.sedar.com
and in Silver Wheaton's Form 40-F on file with the U.S. Securities and
Exchange Commission in Washington, D.C. Forward-looking statements are based
on assumptions management believes to be reasonable, including but not
limited to: the continued operation of the mining operations from which
Silver Wheaton purchases silver or gold, no material adverse change in the
market price of commodities, that the mining operations will operate and the
mining projects will be completed in accordance with their public statements
and achieve their stated production outcomes, and such other assumptions and
factors as set out herein. Although Silver Wheaton has attempted to identify
important factors that could cause actual results to differ materially from
those contained in forward-looking statements, there may be other factors
that cause results not to be as anticipated, estimated or intended. There can
be no assurance that forward-looking statements will prove to be accurate.
Accordingly, readers should not place undue reliance on forward-looking
statements. Silver Wheaton does not undertake to update any forward-looking
statements that are included or incorporated by reference herein, except in
accordance with applicable securities laws.

    Consolidated Statement of Operations (unaudited)

    (US dollars and shares in       Three Months Ended    Nine Months Ended
     thousands, except per             September 30          September 30
     share amounts - unaudited)      2010       2009       2010       2009
    -------------------------------------------------------------------------
    Sales                         $  92,834  $  69,767  $ 273,776  $ 148,742
    -------------------------------------------------------------------------

    Cost of sales                    19,154     18,765     60,022     43,069
    Depletion                        12,505     13,164     41,416     26,170
    -------------------------------------------------------------------------
                                     31,659     31,929    101,438     69,239
    -------------------------------------------------------------------------
    Earnings from operations         61,175     37,838    172,338     79,503
    -------------------------------------------------------------------------

    Expenses and other income
      General and
       administrative(1)              4,947      3,906     18,260     12,917
      Gain on mark-to-market
       of warrants held              (7,861)         -     (8,094)       (33)
      Other                            (360)       366       (164)      (496)
    -------------------------------------------------------------------------
                                     (3,274)     4,272     10,002     12,388
    -------------------------------------------------------------------------

    Earnings before tax              64,449     33,566    162,336     67,115
    Future income tax recovery        4,785          -      4,785          -
    -------------------------------------------------------------------------
    Net earnings                  $  69,234  $  33,566  $ 167,121  $  67,115
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Basic earnings per share      $    0.20  $    0.11  $    0.49  $    0.23
    Diluted earnings per share    $    0.20  $    0.11  $    0.48  $    0.23
    Weighted average number
     of shares outstanding
      Basic                         344,253    313,445    343,168    294,208
      Diluted                       350,361    317,431    348,469    297,936
    -------------------------------------------------------------------------
    1) Stock based compensation
       (a non-cash item) included
       in general and
       administrative             $   1,306  $     623  $   6,431  $   3,312
    Consolidated Balance Sheets (unaudited)

                                                   September 30   December 31
    (US dollars in thousands - unaudited)               2010         2009
    -------------------------------------------------------------------------

    Assets
    Current
      Cash and cash equivalents                     $   255,189  $   227,566
      Accounts receivable                                 7,798        4,881
      Other                                                 924        1,027
    -------------------------------------------------------------------------
                                                        263,911      233,474

    Long-term investments                               155,122       73,747
    Silver and gold interests                         1,943,224    1,928,476
    Other                                                 1,368        1,527
    -------------------------------------------------------------------------
                                                    $ 2,363,625  $ 2,237,224
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Liabilities
    Current
      Accounts payable                              $     1,398  $     5,397
      Accrued liabilities                                 4,606        4,578
      Current portion of bank debt                       28,560       28,560
      Current portion of silver interest payments       145,317      130,788
    -------------------------------------------------------------------------
                                                        179,881      169,323

    Long-term portion of bank debt                       85,760      107,180
    Long-term portion of silver interest payments       120,323      236,796
    -------------------------------------------------------------------------
                                                        385,964      513,299
    -------------------------------------------------------------------------

    Shareholders' Equity
    Issued capital and contributed surplus            1,372,525    1,333,191
    -------------------------------------------------------------------------

    Retained earnings                                   510,955      343,834
    Accumulated other comprehensive income               94,181       46,900
    -------------------------------------------------------------------------
                                                        605,136      390,734
    -------------------------------------------------------------------------
                                                      1,977,661    1,723,925
    -------------------------------------------------------------------------
                                                    $ 2,363,625  $ 2,237,224
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Consolidated Statement of Cash Flows (unaudited)

                                    Three Months Ended    Nine Months Ended
    (US dollars in thousands -         September 30          September 30
     unaudited)                      2010       2009       2010       2009
    -------------------------------------------------------------------------

    Operating Activities
    Net earnings                  $  69,234  $  33,566  $ 167,121  $  67,115
    Items not affecting cash
      Depreciation and depletion     12,573     13,229     41,615     26,359
      Stock based compensation        1,306        623      6,431      3,312
      Gain on mark-to-market of
       warrants held                 (7,861)         -     (8,094)       (33)
      Future income tax recovery     (4,785)         -     (4,785)         -
      Other                          (1,251)      (338)      (879)      (148)
    Change in non-cash operating
     working capital                  1,269     (1,700)    (6,334)    (1,652)
    -------------------------------------------------------------------------
    Cash generated by
     operating activities            70,485     45,380    195,075     94,953
    -------------------------------------------------------------------------

    Financing Activities
    Bank debt drawn down                  -    140,200          -    140,200
    Bank debt repaid                 (7,140)    (7,140)   (21,420)  (234,920)
    Shares issued                         -    287,531          -    517,955
    Share issue costs                     -    (11,645)       (85)   (21,620)
    Share purchase
     warrants exercised               5,017     10,345      6,022     10,508
    Share purchase
     options exercised                8,579      4,200     26,881      5,789
    -------------------------------------------------------------------------
    Cash generated by
     financing activities             6,456    423,491     11,398    417,912
    -------------------------------------------------------------------------

    Investing Activities
    Silver and gold interests      (144,465)  (213,819)  (158,176)  (218,466)
    Acquisition of Silverstone
     Resources Corp., net of
     cash acquired                        -       (261)      (201)     2,407
    Long-term investments              (644)         -    (21,533)         -
    Other                               (10)     1,599        396      1,615
    -------------------------------------------------------------------------
    Cash applied to
     investing activities          (145,119)  (212,481)  (179,514)  (214,444)
    -------------------------------------------------------------------------
    Effect of exchange rate
     changes on cash and
     cash equivalents                   471       (122)       664       (673)
    -------------------------------------------------------------------------
    (Decrease) increase in cash
     and cash equivalents           (67,707)   256,268     27,623    297,748
    Cash and cash equivalents,
     beginning of period            322,896     48,590    227,566      7,110
    -------------------------------------------------------------------------
    Cash and cash equivalents,
     end of period                $ 255,189  $ 304,858  $ 255,189  $ 304,858
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Results of Operations (unaudited)

                                       Three Months Ended September 30, 2010
    -------------------------------------------------------------------------

                                                                     Average
                                                                    realized
                                                                       price
                               Ounces       Ounces        Sales   (US$'s per
                           produced(3)        sold       (US$'s)       ounce)
    -------------------------------------------------------------------------

    Silver
      San Dimas(5)              1,255        1,274  $    25,613  $     20.11
      Zinkgruvan                  508          635       12,680        19.95
      Yauliyacu                   633           87        1,548        17.79
      Penasquito                1,017          692       12,980        18.76
      Minto                        46           40          912        22.92
      Cozamin                     381          306        5,825        19.06
      Barrick(6)                  682          533       10,202        19.16
      Other(7)                  1,023          710       13,649        19.22
    -------------------------------------------------------------------------
                                5,545        4,277  $    83,409  $     19.51
    Gold
      Minto                     6,961        7,127  $     9,425  $     1,323
    -------------------------------------------------------------------------
    Silver Equivalent(8)        5,947        4,688  $    92,834  $     19.81
    Corporate
    -------------------------------------------------------------------------
                                5,947        4,688  $    92,834  $     19.81
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                       Three Months Ended September 30, 2010
    -------------------------------------------------------------------------

                                                                        Cash
                                Total        Total          Net    flow from
                            cash cost    depletion     earnings     (used in)
                           (US$'s per   (US$'s per        (loss)  operations
                             ounce)(4)    ounce)(4)      (US$'s)      (US$'s)
    -------------------------------------------------------------------------

    Silver
      San Dimas(5)        $      4.04  $      0.78  $    19,471  $    20,468
      Zinkgruvan                 4.04         1.72        9,021        9,522
      Yauliyacu                  3.98         3.47          900        1,202
      Penasquito                 3.90         2.54        8,521       10,281
      Minto                      3.90         3.69          610          567
      Cozamin                    4.04         4.62        3,177        4,868
      Barrick(6)                 3.90         3.58        6,218        8,281
      Other(7)                   3.93         4.51        7,658       10,518
    -------------------------------------------------------------------------
                          $      3.98  $      2.53  $    55,576  $    65,707
    Gold
      Minto               $       300  $       237  $     5,599  $     5,972
    -------------------------------------------------------------------------
    Silver Equivalent(8)  $      4.09  $      2.67  $    61,175  $    71,679
    Corporate                                             8,059       (1,194)
    -------------------------------------------------------------------------
                          $      4.09  $      2.67  $    69,234  $    70,485
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    1)  All figures in thousands except gold ounces produced and sold and per
        ounce amounts.
    2)  Ounces produced represent the quantity of silver and gold contained
        in concentrate or doré prior to smelting or refining deductions.
    3)  Certain production figures are based on management estimates.
    4)  Refer to discussion on non-GAAP measures at the end of this press
        release.
    5)  The ounces produced and sold during the third quarter of 2010 include
        250,000 ounces received from Goldcorp, in connection with Goldcorp's
        four year commitment to deliver to Silver Wheaton 1.5 million ounces
        of silver per annum resulting from their sale of San Dimas to
        Primero.
    6)  Comprised of the Lagunas Norte, Pierina and Veladero mines.
    7)  Comprised of the Los Filos, San Martin, La Negra, Mineral Park,
        Neves-Corvo, Stratoni and Campo Morado mines.
    8)  Gold ounces produced and sold are converted to a silver equivalent
        basis on the ratio of the average silver price received to the
        average gold price received during the period.
                                       Three Months Ended September 30, 2009
    -------------------------------------------------------------------------

                                                                     Average
                                                                    realized
                                                                       price
                               Ounces       Ounces        Sales   (US$'s per
                             produced         sold       (US$'s)       ounce)
    -------------------------------------------------------------------------

    Silver
     San Dimas                  1,232        1,234  $    18,886  $     15.30
     Zinkgruvan                   415          433        6,861        15.85
     Yauliyacu                    750          698       10,600        15.19
     Penasquito                   165          190        2,691        14.15
     Minto                         46           68        1,043        15.29
     Cozamin                      366          384        5,736        14.94
     Barrick(4)                   223          187        3,008        16.07
     Other(5)                     783          780       11,369        14.56
    -------------------------------------------------------------------------
                                3,980        3,974  $    60,194  $     15.14
    Gold
      Minto                     3,698        9,953  $     9,573  $       962
    -------------------------------------------------------------------------
    Silver Equivalent(6)        4,213        4,600  $    69,767  $     15.16
    -------------------------------------------------------------------------
    Corporate
                                4,213        4,600  $    69,767  $     15.16
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                       Three Months Ended September 30, 2009
    -------------------------------------------------------------------------

                                                                        Cash
                                Total        Total          Net    flow from
                            cash cost    depletion     earnings     (used in)
                           (US$'s per   (US$'s per        (loss)  operations
                             ounce)(3)    ounce)(3)      (US$'s)      (US$'s)
    -------------------------------------------------------------------------

    Silver
     San Dimas            $      4.02  $      0.65  $    13,120  $    13,925
     Zinkgruvan                  4.02         1.78        4,350        4,415
     Yauliyacu                   3.94         3.47        5,426        7,849
     Penasquito                  3.90         2.36        1,502        1,950
     Minto                       3.90         4.48          472          794
     Cozamin                     4.00         4.72        2,389        4,229
     Barrick(4)                  3.90         3.46        1,631        2,278
     Other(5)                    3.91         3.95        5,224        7,398
    -------------------------------------------------------------------------
                          $      3.97  $      2.59  $    34,114  $    42,838
    Gold
      Minto               $       300  $       288  $     3,724  $     5,330
    -------------------------------------------------------------------------
    Silver Equivalent(6)  $      4.08  $      2.86  $    37,838  $    48,168
    Corporate                                            (4,272)      (2,788)
    -------------------------------------------------------------------------
                          $      4.08  $      2.86  $    33,566  $    45,380
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    1)  All figures in thousands except gold ounces produced and sold and per
        ounce amounts.
    2)  Ounces produced represent the quantity of silver and gold contained
        in concentrate or doré prior to smelting or refining deductions.
    3)  Refer to discussion on non-GAAP measures at the end of this press
        release.
    4)  Comprised of the Lagunas Norte, Pierina and Veladero mines.
    5)  Comprised of the Los Filos, San Martin, La Negra, Mineral Park,
        Neves-Corvo, Stratoni and Campo Morado mines.
    6)  Gold ounces produced and sold are converted to a silver equivalent
        basis on the ratio of the average silver price received to the
        average gold price received during the period.
                                        Nine Months Ended September 30, 2010
    -------------------------------------------------------------------------
                                                                     Average
                                                                    realized
                                                                       price
                               Ounces       Ounces        Sales   (US$'s per
                           produced(3)        sold       (US$'s)       ounce)
    -------------------------------------------------------------------------

    Silver
      San Dimas                 3,571        3,556  $    66,463  $     18.69
      Zinkgruvan                1,373        1,446       26,964        18.64
      Yauliyacu                 2,062        1,185       21,372        18.04
      Penasquito                2,337        1,772       32,466        18.32
      Minto                       157          133        2,562        19.19
      Cozamin                   1,068          999       18,226        18.26
      Barrick(5)                2,159        2,043       36,942        18.08
      Other(6)                  3,099        2,214       40,635        18.35
    -------------------------------------------------------------------------
                               15,826       13,348  $   245,630  $     18.40
    Gold
      Minto                    24,665       23,321  $    28,146  $     1,207
    -------------------------------------------------------------------------
    Silver Equivalent(7)       17,395       14,826  $   273,776  $     18.47
    Corporate
    -------------------------------------------------------------------------
                               17,395       14,826  $   273,776  $     18.47
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                        Nine Months Ended September 30, 2010
    -------------------------------------------------------------------------
                                                                        Cash
                                Total        Total          Net    flow from
                            cash cost    depletion     earnings     (used in)
                           (US$'s per   (US$'s per        (loss)  operations
                             ounce)(4)    ounce)(4)      (US$'s)      (US$'s)
    -------------------------------------------------------------------------

    Silver
      San Dimas           $      4.04  $      0.78  $    49,308  $    52,099
      Zinkgruvan                 4.04         1.72       18,635       19,578
      Yauliyacu                  3.98         3.47       12,545       16,662
      Penasquito                 3.90         2.54       21,050       25,556
      Minto                      3.90         3.69        1,549        1,795
      Cozamin                    4.03         4.62        9,590       14,524
      Barrick(5)                 3.90         3.54       21,749       25,896
      Other(6)                   3.92         4.38       22,254       31,935
    -------------------------------------------------------------------------
                          $      3.97  $      2.69  $   156,680  $   188,045
    Gold
      Minto               $       300  $       235  $    15,658  $    19,357
    -------------------------------------------------------------------------
    Silver Equivalent(7)  $      4.05  $      2.79  $   172,338  $   207,402
    Corporate                                            (5,217)     (12,327)
    -------------------------------------------------------------------------
                          $      4.05  $      2.79  $   167,121  $   195,075
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    (1) All figures in thousands except gold ounces produced and sold and per
        ounce amounts.
    (2) Ounces produced represent the quantity of silver and gold contained
        in concentrate or doré prior to smelting or refining deductions.
    (3) Certain production figures are based on management estimates.
    (4) Refer to discussion on non-GAAP measures at the end of this press
        release.
    (5) Comprised of the Lagunas Norte, Pierina and Veladero mines.
    (6) Comprised of the Los Filos, San Martin, La Negra, Mineral Park,
        Neves-Corvo, Stratoni and Campo Morado mines.
    (7) Gold ounces produced and sold are converted to a silver equivalent
        basis on the ratio of the average silver price received to the
        average gold price received during the period.
                                        Nine Months Ended September 30, 2009
    -------------------------------------------------------------------------
                                                                     Average
                                                                    realized
                                                                       price
                               Ounces       Ounces        Sales   (US$'s per
                             produced        sold       (US$'s)       ounce)
    -------------------------------------------------------------------------

    Silver
      San Dimas                 3,819        3,840  $    52,990  $     13.81
      Zinkgruvan                1,356        1,353       19,023        14.06
      Yauliyacu                 2,359        1,987       26,881        13.53
      Penasquito                  487          455        6,106        13.42
      Minto                        83           67        1,036        15.31
      Cozamin                     628          597        8,671        14.53
      Barrick(4)                  223          187        3,008        16.07
      Other(5)                  2,092        1,584       21,319        13.44
    -------------------------------------------------------------------------
                               11,047       10,070  $   139,034  $     13.80
    Gold
      Minto                    10,521       10,098  $     9,708  $       961
    -------------------------------------------------------------------------
    Silver Equivalent(6)       11,708       10,708  $   148,742  $     13.89
    Corporate
    -------------------------------------------------------------------------
                               11,708       10,708  $   148,742  $     13.89
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                        Nine Months Ended September 30, 2009
    -------------------------------------------------------------------------
                                                                        Cash
                                Total        Total          Net    flow from
                            cash cost    depletion     earnings     (used in)
                           (US$'s per   (US$'s per        (loss)  operations
                             ounce)(3)    ounce)(3)      (US$'s)      (US$'s)
    -------------------------------------------------------------------------

    Silver
      San Dimas           $      4.02  $      0.71  $    34,817  $    37,553
      Zinkgruvan                 4.02         1.78       11,175       12,793
      Yauliyacu                  3.93         3.47       12,184       19,082
      Penasquito                 3.90         2.35        3,260        4,331
      Minto                      3.90         4.48          469          808
      Cozamin                    4.00         4.70        3,479        7,617
      Barrick(4)                 3.90         3.46        1,631        2,278
      Other(5)                   3.91         4.03        8,715       14,883
    -------------------------------------------------------------------------
                          $      3.97  $      2.31  $    75,730  $    99,345
    Gold
      Minto               $       300  $       288  $     3,773  $     5,522
    -------------------------------------------------------------------------
    Silver Equivalent(6)  $      4.02  $      2.44  $    79,503  $   104,867
    Corporate                                           (12,388)      (9,914)
    -------------------------------------------------------------------------
                          $      4.02  $      2.44  $    67,115  $    94,953
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    (1) All figures in thousands except gold ounces produced and sold and per
        ounce amounts.
    (2) Ounces produced represent the quantity of silver and gold contained
        in concentrate or doré prior to smelting or refining deductions.
    (3) Refer to discussion on non-GAAP measures at the end of this press
        release.
    (4) Comprised of the Lagunas Norte, Pierina and Veladero mines.
    (5) Comprised of the Los Filos, San Martin, La Negra, Mineral Park,
        Neves-Corvo, Stratoni and Campo Morado mines.
    (6) Gold ounces produced and sold are converted to a silver equivalent
        basis on the ratio of the average silver price received to the
        average gold price received during the period.

Non-GAAP Measures

Silver Wheaton has included, throughout this press release, certain
non-GAAP performance measures, including total cash costs of silver and gold
on a sales basis, as well as operating cash flows per share and cash
operating margin. These non-GAAP measures do not have any standardized
meaning prescribed by GAAP, nor are they necessarily comparable with similar
measures presented by other companies. Cash costs are presented as they
represent an industry standard method of comparing certain costs on a per
unit basis. Cash operating margin is defined as the realized selling price
less total cash cost per silver equivalent ounce. The Company believes that
certain investors use this information to evaluate the Company's performance.
The data is intended to provide additional information and should not be
considered in isolation or as a substitute for measures of performance
prepared in accordance with GAAP. During the three months ended September 30,
2010
, the Company's total cash costs, which were equivalent to the Company's
cost of sales in accordance with GAAP, were $3.98 per ounce of silver and
$300 per ounce of gold (2009 - $3.97 per ounce of silver and $300 per ounce
of gold).

For further information: Brad Kopp, Vice President, Investor Relations,
Silver Wheaton Corp., Tel: 1-800-380-8687, Email: info(at)silverwheaton.com,
Website: www.silverwheaton.com

For further information: Brad Kopp, Vice President, Investor Relations, Silver Wheaton Corp., Tel: 1-800-380-8687, Email: info(at)silverwheaton.com, Website: www.silverwheaton.com

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