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Exhibit 3(a)

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Industry
Canada                              Industrie
Canada








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|Certificate
    of Continuance
    Canada Business
    Corporations Act                                                                                                                    |  | Certificat
    de prorogation
    Loi canadienne sur
    les sociétés par actions                                                                                                                                     
|                                                                                                                                                                                          
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|                                                                                                                                                                                          
|Potash Corporation of Saskatchewan
    Inc.                                                                                                                                                |  | 406595-6                                                                                                                                                                                                              
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|                                                                                                                                                                                           |  |                                                                                                                                                                                                                       
|Name of
    Corporation  Dénomination de la
    société                                                                                                                                   |  | Corporation number  Numéro
    de la société                                                                                                                                                                         
|                                                                                                                                                                                          
|                                                                                                                                                                                          
|                                                                                                                                                                                          
|I hereby certify that the above-named corporation
    was continued under section 187 of the Canada Business
    Corporations Act, as set out in the attached articles of
    continuance. |  | Je certifie que la société
    susmentionnée a été prorogée en vertu de
    larticle 187 de la Loi canadienne sur les
    sociétés par actions, tel quil est
    indiqué dans les clauses de prorogation ci-jointes.
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|signature                                                                                                                                                                                  |  | May 15, 2002/le 15 mai 2002                                                                                                                                                                                           
|                                                                                                                                                                                          
|Director  Directeur                                                                                                                                                                       |  | Date of Continuance  Date de la
    prorogation                                                                                                                                                                      
|                                                                                                                                                                                          














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(FORM 11)



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SCHEDULE 1

ARTICLES OF CONTINUANCE

POTASH CORPORATION OF SASKATCHEWAN
INC.


The classes and any maximum number of shares that
Potash Corporation of Saskatchewan Inc. (the
Corporation) is authorized to issue:



| |     |                                                                      
| | --- | ---------------------------------------------------------------------
| | (a) | an unlimited number of Common Shares; and                            
|
| | (b) | an unlimited number of First Preferred Shares
    issuable in series.



|   |              
|-- | -------------
|1. | COMMON SHARES

The rights, privileges, restrictions and
conditions attaching to the common shares (the Common
Shares) are as follows:



| |       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
| | ----- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | 1.1   | Dividends                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|
| | 1.1.1 | Subject to any prior rights of the registered
    holders of the First Preferred Shares and of the registered
    holders of any other shares of the Corporation ranking senior to
    the Common Shares with respect to payment of dividends, the
    registered holders of the Common Shares shall have the right to
    receive such dividends, if any, as the board in its discretion
    may declare.                                                                                                                                    
|
| | 1.2   | Liquidation, Dissolution or Winding
    Up                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|
| | 1.2.1 | Subject to any prior rights of the registered
    holders of the First Preferred Shares or any other class of
    shares ranking senior to the Common Shares, the registered
    holders of the Common Shares shall have the right to receive,
    equally on a share-for-share basis, the remaining assets of the
    Corporation in the event of liquidation, dissolution, or
    winding-up of the Corporation or other distribution of assets of
    the Corporation among its shareholders for the purpose of
    winding-up its affairs.
|
| | 1.3   | Voting Rights                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|
| | 1.3.1 | The registered holders of the Common Shares shall
    be entitled to receive notice of, to attend and to cast one vote
    per Common Share held at all meetings of shareholders of the
    Corporation except meetings at which only registered holders of
    some other specified class or series are, at law or pursuant to
    the articles, entitled to vote.                                                                                                                                                                           



|   |                 
|-- | ----------------
|2. | PREFERRED SHARES

The rights, privileges, restrictions and
conditions attaching to the first preferred shares (the
First Preferred Shares), as a class, are as follows:

2.1   Issuance in
Series



| |       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
| | ----- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | 2.1.1 | The Preferred Shares may, upon compliance with
    the applicable provisions of the Canada Business Corporations
    Act (the CBCA), be issued at any time and from time
    to time in one or more series, each series to consist of such
    number of shares as may, before the issue thereof, be fixed by
    the Board of Directors.                                                                                                                                                                                                                                                                                                                     
|
| | 2.1.2 | Subject to the provisions of the CBCA, the
    by-laws of the Corporation and the rights, privileges,
    restrictions and conditions attached to the First Preferred
    Shares of any series, the directors may by resolution (a
    Series Resolution) duly passed before the
    issuance of First Preferred Shares of any series, alter the
    Articles to fix the number of First Preferred Shares in, and to
    determine the designation of the First Preferred Shares of, such
    series and alter the Articles to create, define and attach
    rights, privileges, restrictions and conditions to the First
    Preferred Shares of such series,



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| |  |                                                                                                                                                               
| |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------
| |  | including (as examples only), without in any way
    limiting the generality of the foregoing, rights, privileges,
    restrictions and conditions concerning:



| |       |                                                                                                                                                                                                                                                        
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i)   | the rate, amount or kind of dividends, whether
    cumulative or non-cumulative, the currency or currencies or kind
    of payment, the date or dates and place or places of payment and
    the date or dates from which such dividends are to accrue;
|
| | (ii)  | the right to receive notice of or to attend or to
    vote at any meeting of shareholders of the Corporation;                                                                                                                                          
|
| | (iii) | if redeemable or purchasable, the redemption or
    purchase prices or the method of calculation thereof and terms
    and conditions of redemption or purchase, with or without
    provision for purchase or similar funds;                          
|
| | (iv)  | any conversion, exchange or reclassification
    rights; and                                                                                                                                                                                           
|
| | (v)   | any other terms not inconsistent with these
    articles;                                                                                                                                                                                              

all as set forth in the articles of amendment
relating to such series.



| |       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | 2.1.3 | The First Preferred Shares of each series shall
    rank on a parity with the First Preferred Shares of every other
    series with respect to priority in payment of dividends and in
    the distribution of assets in the event of liquidation,
    dissolution or winding-up of the Corporation or other
    distribution of assets of the Corporation among its shareholders
    for the purpose of winding-up of its affairs.                                                                                                                                                                                                                                                                                                                                      
|
| | 2.1.4 | The First Preferred Shares shall be entitled to
    preference over the Common Shares of the Corporation and any
    other shares of the Corporation ranking junior to the First
    Preferred Shares with respect to the payment of dividends and
    the distribution of assets in the event of liquidation,
    dissolution or winding-up of the Corporation or other
    distribution of assets of the Corporation among its shareholders
    for the purpose of winding-up its affairs and may also be given
    such other preferences over the Common Shares of the Corporation
    and any other shares of the Corporation ranking junior to the
    First Preferred Shares as may be fixed by the board as to the
    respective series authorized to be issued.
|
| | 2.1.5 | When any cumulative dividends or amounts payable
    on a return of capital are not paid in full, the First Preferred
    Shares of all series shall participate rateably in respect of
    such dividends including accumulations, if any, in accordance
    with the sums which would be payable on the First Preferred
    Shares if all such dividends were declared and paid in full, and
    on any return of capital in accordance with the sums which would
    be payable on such return of capital if all sums so payable were
    paid in full.                                                                                                                                                                                                               
|
| | 2.1.6 | The registered holders of the First Preferred
    Shares shall not be entitled (except as specifically provided in
    the rights, privileges, restrictions, and conditions attaching
    to the shares of any series and except as provided in the CBCA)
    to receive notice of or attend any meeting of the shareholders
    of the Corporation or to vote at any such meeting for any
    purpose, but shall be entitled to have mailed to them copies of
    the financial statements and auditors report thereon
    submitted to annual meetings of shareholders.                                                                                                                                                                                               



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SCHEDULE 2

ARTICLES OF CONTINUANCE

POTASH CORPORATION OF SASKATCHEWAN
INC.


Details of Incorporation:



| |     |                                                                                                                                                                        
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) | Incorporated under The Companies Act
    (Saskatchewan) as Achen Construction Co. Ltd. on June 4,
    1953.                                                            
|
| | (b) | Continued pursuant to The Business
    Corporations Act, 1977 (Saskatchewan) on September 29,
    1978.                                                                
|
| | (c) | Restated Articles of Incorporation under The
    Business Corporations Act (Saskatchewan) registered on
    October 31, 1989 as Potash Corporation of Saskatchewan Inc.
|
| | (d) | Articles of Amendment under The Business
    Corporations Act (Saskatchewan) registered on May 11,
    1995.                                                           



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SCHEDULE 3

ARTICLES OF CONTINUANCE

POTASH CORPORATION OF SASKATCHEWAN
INC.




| |     |                                                                                                                                                                                                                                                                                                                                                                             
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (1) | The actual number of directors within the minimum
    and maximum number set out in the Articles of Continuance may be
    determined from time to time by resolution of the Board of
    Directors of the Corporation.                                                                                                                                                     
|
| | (2) | The directors of the Corporation may appoint one
    or more additional directors, who shall hold office for a term
    expiring not later than the close of the next annual meeting of
    shareholders, but the total number of directors so appointed may
    not exceed one third of the number of directors elected at the
    previous annual meeting of shareholders.
|
| | (3) | Meetings of shareholders of the Corporation may
    be held outside of Canada at the following places;
    New York, New York; London, England; or Chicago,
    Illinois.