Silver Wheaton Reports Record Operating and Financial Results in 2010; Production Increased 37% With Operating Cash Flows Almost Doubling

By Silver Wheaton Corp., PRNE
Wednesday, March 2, 2011

VANCOUVER, British Columbia, March 3, 2011 - Silver Wheaton Corp. ("Silver Wheaton" or the "Company") (TSX: SLW)
(NYSE: SLW) is pleased to announce its unaudited results for the fourth
quarter and the year ended December 31, 2010.

FOURTH QUARTER HIGHLIGHTS (3 Months)

The Company had record quarterly net earnings, operating cash flows,
attributable production and sales, as follows:

    - Net earnings more than doubled to US$123.0 million (US$0.35 per share)
    compared with US$50.8 million (US$0.15 per share) in 2009.

    - Operating cash flows increased 76% to US$124.7 million (US$0.36 per
    share)(1) compared with US$71.0 million (US$0.21 per share)(1) in 2009.

    - Attributable silver equivalent production of 6.3 million ounces (6.1
    million ounces of silver and 4,100 ounces of gold), representing an
    increase of 10% over the comparable period in 2009.

    - Silver equivalent sales of 5.7 million ounces (5.5 million ounces of
    silver and 2,600 ounces of gold), representing an increase of 11% over
    the comparable period in 2009.

    - Total cash costs were US$4.02(1) per silver equivalent ounce, compared
    with US$4.04(1) per ounce in 2009.

    - Cash operating margin(1) increased 64% compared to 2009, to a record
    US$22.42 per silver equivalent ounce, while average silver prices over
    the same period increased by 50%.

    - Acquired 3.0 million common shares of Bear Creek Mining Corporation for
    total consideration of C$19.1 million. At December 31, 2010, Silver
    Wheaton owned 13.3 million common shares of Bear Creek representing
    approximately 14% of the outstanding shares on an undiluted basis.

2010 HIGHLIGHTS (12 Months)

    The Company had record annual net earnings, operating cash flows,
attributable production and sales, as follows:

    - Net earnings more than doubled to US$290.1 million (US$0.84 per share)
compared to US$117.9 million (US$0.39 per share) in 2009.

    - Operating cash flows increased 93% to US$319.8 million (US$0.93 per
share)(1) compared to US$165.9 million (US$0.54 per share)(1) in 2009.

    - Attributable silver equivalent production of 23.9 million ounces (22.1
million ounces of silver and 28,800 ounces of gold), representing an increase
of 37% compared to 2009.

    - Silver equivalent sales of 20.5 million ounces (18.9 million ounces of
silver and 25,900 ounces of gold), representing an increase of 29% compared
to 2009.

    - Total cash costs were US$4.04(1) per silver equivalent ounce, compared
with US$4.03(1) per ounce in 2009.

    - Cash operating margin(1) increased 50% compared to 2009, to a record
US$16.63 per silver equivalent ounce, while average silver prices over the
same period increased by 38%.

    - As at December 31, 2010, approximately 2.4 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.

    - Acquired an amount equal to 100% of the life of mine silver and gold
production from Augusta Resource Corporation's Rosemont Copper project in the
United States. Once production commences, Rosemont is forecast to increase
Silver Wheaton's long-term annual production by approximately 2.4 million
ounces of silver, plus any gold production, estimated by Augusta to average
up to 15,000 ounces of gold per annum.

    - Converted the debenture with Pan American Silver Corp. into an
agreement to acquire an amount equal to 12.5% of the life of mine silver
production from the Loma de La Plata zone of the Navidad project located in
Argentina. Navidad is forecast to increase Silver Wheaton's long-term annual
silver production by up to 2 million ounces.

    - Acquired 1.8 million units of Ventana Gold Corp. for total
consideration of C$20.7 million (US$19.8 million). As part of this
transaction, Silver Wheaton has been granted a right of first refusal over
any silver streams relating to Ventana's Colombian properties, including the
highly prospective La Bodega project, which has the potential to host a
world-class gold deposit with significant silver by product credits.

    - 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 agreement, which was
set to expire in 2029, was extended to the 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. Primero
has provided Silver Wheaton with a right of first refusal on any metal stream
or similar transaction it enters into.

    - Goldcorp Inc. announced that its world-class gold-silver-lead-zinc
Penasquito mine achieved commercial production, on schedule, 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 the end of
the first quarter of 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 Corporation's world-class gold-silver Pascua-Lama project
is forecast to commence production in the first half of 2013, with detailed
engineering and procurement nearing completion and earthworks well 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.

———————-

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

"2010 was a tremendously successful year, with the Company setting new
records on all financial and operating metrics. In just six years, Silver
Wheaton has grown its market capitalization to in excess of US$15 billion,
and has more silver reserves than any silver company in the world," said
Peter Barnes, Chief Executive Officer of Silver Wheaton. "We were especially
pleased that the production ramp up at the first of our cornerstone assets,
Goldcorp's world-class Penasquito mine in Mexico, exceeded expectations and
contributed to Silver Wheaton's peer-leading 37% annual production growth.
This was particularly timely as silver prices climbed to 30 year highs which
resulted in record quarterly and annual results."

"This momentum is expected to continue into 2011, with forecast
production growth of another 15%, which will result in operating cash flows
of over US$700 million at current metal prices. Production growth over the
next five years is forecast at approximately 80%, which represents one of the
strongest growth profiles in the precious metals industry and is driven by
the continued ramp up at Penasquito and the forecast 2013 production start at
Barrick's world-class Pascua-Lama project."

"To supplement our growth in 2014 and beyond, important transactions were
completed in 2010. These include a life-of-mine precious metals purchase
agreement relating to the Rosemont project in Arizona and converting a
debenture allowing us to acquire a portion of the life-of-mine silver
production from the Loma de La Plata zone of the Navidad project in
Argentina. Combined, these projects are forecast to increase our long-term
silver equivalent production by up to 5 million ounces per annum, once in
production. We also acquired a right of first refusal on all future silver
streams from one of the most exciting gold discoveries in the last decade,
the La Bodega project in Colombia, and amended the silver purchase agreement
relating to the San Dimas mine in Mexico, which should result in lasting
benefits to our shareholders, including the potential for increased silver
production."

"With cash on hand of over US$428 million, a fully undrawn US$400 million
revolving credit facility and strong cash flows from operations, we remain
exceptionally well-positioned to continue growing our silver stream
portfolio. Merger and acquisition activity in the mining industry is
anticipated to remain robust in 2011, and Silver Wheaton continues to offer
an attractive mainstream financing solution to assist companies in achieving
their growth goals."

2011 and Five Year Silver Equivalent Production Forecast

The Company estimates, based upon its current agreements, to have 2011
attributable production of 27 to 28 million silver equivalent ounces,
including 15,000 ounces of gold. This represents a 15% increase compared to
2010. Total cash costs in 2011 are anticipated to be approximately US$4 per
silver equivalent ounce, unchanged from 2010. By 2015, based upon its current
agreements, annual attributable production is anticipated to increase by 80%
to approximately 43 million silver equivalent ounces, including 35,000 ounces
of gold. Attributable mine-by-mine actual 2010 production and forecast 2011
production are as follows:

                                             Attributable Production
                                               2010         2011
                                            Actual(2)      Forecast

    Silver ounces produced (000's)
              Penasquito                       3,792        6,800
              San Dimas(3)                     5,157        5,700
              Barrick(4)                       2,617        3,600
              Yauliyacu                        2,713        2,600
              Zinkgruvan                       1,801        1,800
              Cozamin                          1,403        1,700
              Other(5)                         4,608        4,550

                                              22,091       26,750

    Gold ounces produced
    (000's in silver equivalent)(6)
                              Minto            1,774          750

    Silver equivalent ounces produced (000's) 23,865       27,500

1) Ounces produced represent the quantity of silver and gold contained in
concentrate or dore prior to smelting or refining deductions.

2) Certain production figures are based on management estimates.

3) Production includes 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.

4) Comprised of the Lagunas Norte, Pierina and Veladero silver interests.

5) 2010 attributable production includes the Los Filos, San Martin, La
Negra, Mineral Park, Neves-Corvo, Stratoni, Keno Hill, Minto and Campo Morado
silver interests. 2011 forecast attributable production includes the Los
Filos, Mineral Park, Neves-Corvo, Stratoni, Keno Hill, Minto, Campo Morado
and Aljustrel silver interests. 6) The Minto mine produced 28,795 oz of gold
in 2010 and is forecast to produce approximately 15,000 oz of gold in 2011.

Webcast and Conference Call Details

A conference call will be held Friday, March 4, 2011, 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:                            37642529
    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:                            37642529
    Archived audio webcast:               www.silverwheaton.com

About Silver Wheaton

Silver Wheaton is the largest silver streaming company in the world.
Based upon its current agreements, forecast 2011 attributable production is
27 to 28 million silver equivalent ounces, including 15,000 ounces of gold.
By 2015, annual attributable production is anticipated to increase
significantly to approximately 43 million silver equivalent ounces, including
35,000 ounces of gold. 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.

Summarized Financial Results (unaudited)

                                                     Years Ended December 31
                                                2010         2009       2008

    Silver equivalent production (1)
    Attributable silver ounces produced       22,091       16,263     11,915
    (000's)
    Attributable gold ounces produced         28,795       18,021          -
    Attributable silver equivalent            23,865       17,395     11,915
    ounces produced (000's) (1)
    Silver equivalent sales (1)
    Silver ounces sold (000's)                18,878       14,744     11,137
    Gold ounces sold                          25,884       17,132          -
    Silver equivalent ounces sold             20,483       15,823     11,137
    (000's) (1)
    Average realized price ($'s per
    ounce)
    Average realized silver price        $     20.75  $     15.02  $   14.97
    Average realized gold price          $  1,224.46  $  1,041.92        n/a
    Average realized silver equivalent   $     20.67  $     15.13  $   14.97
    price
    Average cash cost ($'s per ounce) (2)
    Average silver cash cost             $      3.97  $      3.97  $    3.94
    Average gold cash cost               $    300.00  $    300.00        n/a
    Average silver equivalent cash cost  $      4.04  $      4.03  $    3.94
    Total revenue ($000's)               $   423,353  $   239,293  $ 166,719
    Net earnings ($000's)                $   290,093  $   117,924  $  17,252
    Earnings per share
    Basic                                $      0.84  $      0.39  $    0.07
    Diluted                              $      0.83  $      0.38  $    0.07
    Cash flow from operations ($000's)   $   319,761  $   165,932  $ 111,142
    Total assets ($000's)                $ 2,635,069  $ 2,237,224 $1,270,646
    Total liabilities ($000's)           $   373,120  $   513,299  $ 382,621
    Total shareholders' equity ($000's)  $ 2,261,949  $ 1,723,925  $ 888,025

    1) 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.
    2) Refer to discussion on non-GAAP measures.

    Consolidated Statement of Operations (unaudited)

                                                  Years Ended December 31
    (US dollars and shares in thousands,          2010        2009        2008
    except per share amounts)
    Sales                                   $  423,353  $ 239,293  $ 166,719

    Cost of sales                               82,749     63,715     43,890
    Depletion                                   57,571     41,156     19,491
                                               140,320    104,871     63,381
    Earnings from operations                   283,033    134,422    103,338

    Expenses and other income
    General and administrative (1)              24,669     17,288     17,476
    (Gain) loss on long-term investments       (10,719)      (335)    65,066
    held
    Other (income) expense                      (7,410)      (455)       631
                                                 6,540     16,498     83,173

    Earnings before tax                        276,493    117,924     20,165
    Future income tax recovery (expense)        13,600          -    (2,913)
    Net earnings                            $  290,093  $ 117,924  $  17,252

    Basic earnings per share                $     0.84  $    0.39  $    0.07
    Diluted earnings per share              $     0.83  $    0.38  $    0.07
    Weighted average number of shares
    outstanding
    Basic                                      344,288    306,040    232,855
    Diluted                                    350,429    309,500    249,244
    1) Stock based compensation (a          $    7,732  $   4,010  $   5,530
    non-cash item) included in general and
    administrative

    Consolidated Balance Sheets (unaudited)

                                                 December 31      December 31
    (US dollars in thousands)                           2010             2009

    Assets
    Current
          Cash and cash                          $   428,636      $   227,566
          equivalents
          Accounts receivable                          7,088            4,881
          Other                                          727            1,027
    Total current                                    436,451          233,474
    assets

    Long-term investments                            284,448           73,747
    Silver and gold interests                      1,912,877        1,928,476
    Other                                              1,293            1,527
    Total assets                                 $ 2,635,069      $ 2,237,224

    Liabilities
    Current
          Accounts payable                       $     1,148      $     5,397
          Accrued liabilities                          8,381            4,578
          Current portion of bank                     28,560           28,560
          debt
          Current portion of silver                  133,243          130,788
          interest payments
    Total current                                    171,332          169,323
    liabilities

    Future income tax                                    822                -
    liability
    Long-term portion of bank debt                    78,620          107,180
    Long-term portion of silver                      122,346          236,796
    interest payments
    Total                                            373,120          513,299
    liabilities
    Shareholders' Equity
    Issued capital and contributed                 1,449,351        1,333,191
    surplus
    Retained earnings                                633,927          343,834
    Accumulated other comprehensive                  178,671           46,900
    income
    Total retained earnings and                      812,598          390,734
    accumulated other comprehensive
    income
    Total shareholders'                            2,261,949        1,723,925
    equity
    Total liabilities and                        $ 2,635,069      $ 2,237,224
    shareholders' equity

    Consolidated Statement of Cash Flows (unaudited)

                                            Years Ended December 31
    (US dollars in                          2010         2009          2008
    thousands)

    Operating Activities
    Net earnings                     $   290,093  $   117,924  $      17,252
    Items not affecting
    cash
    Depreciation and                      57,839       41,413         19,491
    depletion
    Stock based                            7,732        4,010          5,530
    compensation
    (Gain) loss on                      (10,719)        (335)         65,066
    long-term investments
    held
    Gain on disposal of                  (5,911)            -              -
    silver purchase
    agreement
    Future income tax                   (13,600)            -          2,913
    (recovery) expense
    Other                                (3,664)          967            398
    Change in non-cash                   (2,009)        1,953            492
    operating working
    capital
    Cash generated by operating          319,761      165,932        111,142
    activities

    Financing Activities
    Bank debt drawn down                       -      140,200        198,500
    Bank debt repaid                    (28,560)    (382,260)      (240,560)
    Shares issued                              -      517,955              -
    Share issue costs                       (85)     (22,117)        (1,939)
    Share purchase warrants               76,093       13,779        115,796
    exercised
    Share purchase options                32,335        8,776          2,667
    exercised
    Cash generated by financing           79,783      276,333         74,464
    activities

    Investing Activities
    Silver and gold                    (172,400)    (220,644)      (184,532)
    interests
    Acquisition of                         (201)        2,281              -
    Silverstone Resources
    Corp., net of cash
    acquired
    Long-term investments               (54,107)            -              -
    Proceeds on disposal of               25,000            -              -
    silver purchase
    agreement
    Other                                    383      (2,849)        (4,348)
    Cash applied to investing          (201,325)    (221,212)      (188,880)
    activities
    Effect of exchange rate                2,851        (597)            419
    changes on cash and cash
    equivalents
    Increase (decrease) in cash          201,070      220,456        (2,855)
    and cash equivalents
    Cash and cash equivalents,           227,566        7,110          9,965
    beginning of year
    Cash and cash equivalents,       $   428,636  $   227,566  $       7,110
    end of year

    Summary of Ounces Produced and Sold (unaudited)

                                          2010
    (in thousands)                 Q4     Q3    Q2    Q1

    Silver ounces produced
    San Dimas (3)               1,586  1,255 1,110 1,206
    Zinkgruvan                    428    508   478   387
    Yauliyacu                     651    633   692   737
    Penasquito                  1,260  1,109   866   557
    Cozamin                       335    381   286   401
    Barrick (4)                   458    682   697   780
    Other (5)                   1,352  1,069 1,240   947
                                6,070  5,637 5,369 5,015
    Silver equivalent ounces of
    gold produced (6)
    Minto                         205    402   522   645
    Silver equivalent ounces    6,275  6,039 5,891 5,660
    produced

    Silver ounces sold
    San Dimas (3)               1,438  1,274 1,076 1,206
    Zinkgruvan                    421    635   313   498
    Yauliyacu                     470     87   517   581
    Penasquito                  1,169    692   656   424
    Cozamin                       411    306   412   281
    Barrick (4)                   482    533   727   783
    Other (5)                   1,139    750   943   654
                                5,530  4,277 4,644 4,427
    Silver equivalent ounces of
    gold sold (6)
    Minto                         127    411   496   571
    Silver equivalent ounces    5,657  4,688 5,140 4,998
    sold

    (table contines)                            2009

    (in thousands)                       Q4    Q3    Q2    Q1

    Silver ounces produced
    San Dimas (3)                     1,275 1,232 1,264 1,323
    Zinkgruvan                          505   415   480   461
    Yauliyacu                           783   750   870   739
    Penasquito                          441   165   162   160
    Cozamin                             388   366   262     -
    Barrick (4)                         756   223     -     -
    Other (5)                         1,068   829   787   559
                                      5,216 3,980 3,825 3,242
    Silver equivalent ounces of
    gold produced (6)
    Minto                               471   233   428     -
    Silver equivalent ounces produced 5,687 4,213 4,253 3,242

    Silver ounces sold
    San Dimas (3)                     1,264 1,234 1,254 1,352
    Zinkgruvan                          357   433   469   451
    Yauliyacu                         1,027   698   546   743
    Penasquito                          191   190   130   135
    Cozamin                             359   384   213     -
    Barrick (4)                         751   187     -     -
    Other (5)                           725   848   326   477
                                      4,674 3,974 2,938 3,158
    Silver equivalent ounces of
    gold sold (6)
    Minto                               441   626    12     -
    Silver equivalent ounces sold     5,115 4,600 2,950 3,158

    1) Ounces produced represent the quantity of silver and gold contained in
       concentrate or dore prior to smelting or refining deductions. As at
       December 31, 2010, approximately 2.4 million payable silver equivalent
       ounces attributable to the Company have been produced and the
       respective payable ounces will be recognized in future sales as they
       are delivered to the Company under the terms of their contracts.
    2) Certain production figures are based on management estimates.
    3) The ounces produced and sold during the third and fourth quarters of
       2010 include 250,000 ounces and 375,000 ounces, respectively, 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.
    4) Comprised of the Lagunas Norte, Pierina and Veladero silver interests.
    5) Comprised of the Los Filos, San Martin, La Negra, Mineral Park,
       Neves-Corvo, Stratoni, Keno Hill, Minto and Campo Morado silver
       interests.
    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.

    Results of Operations (unaudited)

    (US                                      Year Ended
    dollars)                                 December 31,
                                                    2010

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

    Silver
    San Dimas        5,157  4,994 $ 105,747 $    21.18
    Zinkgruvan       1,801  1,867    39,447      21.12
    Yauliyacu        2,713  1,655    31,998      19.33
    Penasquito       3,792  2,941    63,632      21.64
    Cozamin          1,403  1,410    29,180      20.71
    Barrick (5)      2,617  2,525    48,311      19.13
    Other (6)        4,608  3,486    73,345      21.04
                    22,091 18,878 $ 391,660 $    20.75
    Gold
    Minto           28,795 25,884 $  31,693 $    1,224
    Silver          23,865 20,483 $ 423,353 $    20.67
    Equivalent
    (7)
    Corporate
                    23,865 20,483 $ 423,353 $    20.67 

    (table continues)

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

    Silver
    San Dimas         $       4.04 $      0.78 $       81,659  $     86,666
    Zinkgruvan                4.04        1.71         28,697        30,178
    Yauliyacu                 3.98        3.47         19,669        25,418
    Penasquito                3.90        2.54         44,683        52,163
    Cozamin                   4.03        4.62         16,987        23,252
    Barrick (5)               3.90        3.55         29,498        36,787
    Other (6)                 3.92        4.49         44,010        58,182
                      $       3.97 $      2.73 $      265,203  $    312,646
    Gold
    Minto             $        300 $       236 $       17,830  $     23,174
    Silver Equivalent (7) $   4.04 $      2.81 $      283,033  $    335,820
    Corporate                                           7,060      (16,059)
                              4.04 $      2.81 $      290,093  $    319,761

    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 dore prior to smelting or refining deductions.
    3) Certain production figures are based on management estimates.
    4) Refer to discussion on non-GAAP measures.
    5) Comprised of the Lagunas Norte, Pierina and Veladero silver interests.
    6) Comprised of the Los Filos, San Martin, Mineral Park, Neves-Corvo,
       Stratoni, Keno Hill, Minto, Campo Morado and La Negra silver interests.
    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.

    (US dollars)                             Year Ended
                                            December 31,
                                                   2009

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

    Silver
    San Dimas         5,094  5,104   $  75,371    $ 14.77
    Zinkgruvan        1,861  1,710      25,569      14.95
    Yauliyacu         3,142  3,014      44,829      14.87
    Penasquito          928    646       9,398      14.55
    Cozamin           1,016    956      15,005      15.70
    Barrick (4)         979    938      16,000      17.06
    Other (5)         3,243  2,376      35,271      14.82
                     16,263 14,744   $ 221,443    $ 15.02
    Gold
    Minto            18,021 17,132   $  17,850    $ 1,042
    Silver
    Equivalent (6)   17,395 15,823   $ 239,293    $ 15.13
    Corporate
                     17,395 15,823   $ 239,293    $ 15.13

    (table continues)

    (US dollars)                                          Year Ended
                                                          December 31,
                                                                 2009
                          Total
                           cash
                           cost
                           ($'s         Total               Cash flow
                           per        depletion     Net        from
                          ounce)      ($'s per   earnings   (used in)
                           (3)         ounce) (3)    (loss)  operations

    Silver
    San Dimas      $      4.02   $       0.70   $   51,266 $   54,829
    Zinkgruvan            4.02           1.78       15,645     19,066
    Yauliyacu             3.93           3.47       22,520     32,980
    Penasquito            3.90           2.35        5,357      6,878
    Cozamin               4.00           4.71        6,686     12,186
    Barrick (4)           3.90           3.56        9,004     15,578
    Other (5)             3.91           4.12       16,163     25,488
                   $      3.97   $       2.46   $  126,641 $  167,005
    Gold
    Minto          $       300   $        288   $    7,781 $   12,865
    Silver
    Equivalent
    (6)            $      4.03   $       2.60    $ 134,422 $  179,870
    Corporate                                      (16,498)   (13,938)
                   $      4.03   $       2.60   $  117,924 $  165,932

    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 dore prior to smelting or refining deductions.
    3) Refer to discussion on non-GAAP measures.
    4) Comprised of the Lagunas Norte, Pierina and Veladero silver interests.
    5) Comprised of the Los Filos, San Martin, Mineral Park, Neves-Corvo,
       Stratoni, Minto, Campo Morado and La Negra silver interests.
    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.

    (US                                       Three Months
    Dollars)                                 Ended December
                                                    1, 2010

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

    Silver
    San Dimas    1,586        1,438   $  39,283    $ 27.33
    Zinkgruvan     428          421      12,483      29.64
    Yauliyacu      651          470      10,627      22.61
    Penasquito   1,260        1,169      31,166      26.66
    Cozamin        335          411      10,953      26.67
    Barrick (5)    458          482      11,369      23.58
    Other (6)    1,352        1,139      30,149      26.47
                 6,070        5,530   $ 146,030    $ 26.41
    Gold
    Minto        4,130        2,562   $   3,547    $ 1,384
    Silver       6,275        5,657   $ 149,577    $ 26.44
    Equivalent
    (7)
    Corporate
                 6,275        5,657   $ 149,577    $ 26.44

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

    Silver
    San Dimas        $      4.05    $     0.78     $  32,351 $  34,567
    Zinkgruvan              4.05          1.69        10,062    10,600
    Yauliyacu               3.98          3.47         7,124     8,756
    Penasquito              3.90          2.54        23,634    26,607
    Cozamin                 4.04          4.62         7,396     8,729
    Barrick (5)             3.90          3.61         7,749    10,890
    Other (6)               3.92          4.81        20,207    24,452
                     $      3.97    $     2.81     $ 108,523 $ 124,601
    Gold
    Minto            $       300    $      237     $   2,172 $   3,816
    Silver           $      4.02    $     2.86     $ 110,695 $ 128,417
    Equivalent (7)
    Corporate                                         12,277   (3,730)
                     $      4.02    $     2.86     $ 122,972 $ 124,687

    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 dore prior to smelting or refining deductions.
    3) Certain production figures are based on management estimates.
    4) Refer to discussion on non-GAAP measures.
    5) Comprised of the Lagunas Norte, Pierina and Veladero silver interests.
    6) Comprised of the Los Filos, Mineral Park, Neves-Corvo, Stratoni, Keno
       Hill, Minto, Campo Morado and La Negra silver interests.
    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.

    (US dollars)                               Three Months
                                               Ended December
                                                31, 2009

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

    Silver
    San Dimas    1,275       1,264   $ 22,380    $ 17.71
    Zinkgruvan     505         357      6,547      18.32
    Yauliyacu      783       1,027     17,948      17.48
    Penasquito     441         191      3,293      17.24
    Cozamin        388         359      6,334      17.66
    Barrick (4)    756         751     12,991      17.31
    Other (5)    1,068         725     12,916      17.80
                 5,216       4,674   $ 82,409    $ 17.63
    Gold
    Minto        7,500       7,033   $  8,142    $ 1,158
    Silver       5,687       5,115   $ 90,551    $ 17.70
    Equivalent (6)
    Corporate
                 5,687       5,115   $ 90,551    $ 17.70

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

    Silver
    San Dimas        $      4.04  $    0.65     $  16,449  $ 17,276
    Zinkgruvan              4.03       1.78         4,470     6,273
    Yauliyacu               3.94       3.47        10,337    13,899
    Penasquito              3.90       2.35         2,098     2,548
    Cozamin                 4.00       4.72         3,207     4,569
    Barrick (4)             3.90       3.59         7,373    13,299
    Other (5)               3.91       4.27         6,978     9,795
                     $      3.97  $    2.77     $  50,912  $ 67,659
    Gold
    Minto            $       300  $     288     $   4,008  $  7,342
    Silver           $      4.04  $    2.93     $  54,920  $ 75,001
    Equivalent (6)
    Corporate                                      (4,109)   (4,020)
                     $      4.04  $   2.93      $   50,811 $ 70,981

    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 dore prior to smelting or refining deductions.
    3) Refer to discussion on non-GAAP measures.
    4) Comprised of the Lagunas Norte, Pierina and Veladero silver interests.
    5) Comprised of the Los Filos, San Martin, Mineral Park, Neves-Corvo,
       Stratoni, Minto, Campo Morado and La Negra silver interests.
    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 year ended December 31, 2010,
the Company's total cash costs, which were equivalent to the Company's cost
of sales in accordance with GAAP, were $3.97 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@silverwheaton.com

Website: http;//www.silverwheaton.com

Brad Kopp, Vice President, Investor Relations, Silver Wheaton Corp.,
Tel: 1-800-380-8687, Email: info at silverwheaton.com

YOUR VIEW POINT
NAME : (REQUIRED)
MAIL : (REQUIRED)
will not be displayed
WEBSITE : (OPTIONAL)
YOUR
COMMENT :