POTASH CORPORATION OF SASKATCHEWAN INC
10-Q, 1999-11-10
MINING & QUARRYING OF NONMETALLIC MINERALS (NO FUELS)
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<PAGE>   1

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------

                                   FORM 10-Q

     [X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
          EXCHANGE ACT OF 1934

               FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 1999

                                       OR

     [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
          EXCHANGE ACT OF 1934

                         COMMISSION FILE NUMBER 1-10351

                    POTASH CORPORATION OF SASKATCHEWAN INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

<TABLE>
<S>                                            <C>
             SASKATCHEWAN, CANADA                                   N/A
       (STATE OR OTHER JURISDICTION OF                        (I.R.S. EMPLOYER
        INCORPORATION OR ORGANIZATION)                      IDENTIFICATION NO.)
            122 - 1ST AVENUE SOUTH                                S7K 7G3
       SASKATOON, SASKATCHEWAN, CANADA                           (ZIP CODE)
   (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)
</TABLE>

                                  306-933-8500
              (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE)

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Sections 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

                                YES [X]  NO [ ]

                     APPLICABLE ONLY TO CORPORATE ISSUERS:

     Indicate the number of shares outstanding of each of the issuer's classes
of common stock, as of the latest practicable date.

     As at October 31, 1999, Potash Corporation of Saskatchewan Inc. (the
"Company") had 54,303,426 Common Shares outstanding.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2

PART I.  FINANCIAL INFORMATION

ITEM 1.  FINANCIAL STATEMENTS

     These interim consolidated financial statements do not include all
disclosures normally provided in annual financial statements. In management's
opinion, the unaudited financial information includes all adjustments
(consisting solely of normal recurring adjustments) necessary to present fairly
such information. Interim results are not necessarily indicative of the results
expected for the fiscal year.

                    POTASH CORPORATION OF SASKATCHEWAN INC.

            CONSOLIDATED STATEMENTS OF INCOME AND RETAINED EARNINGS
                         (IN THOUSANDS OF U.S. DOLLARS)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                               THREE MONTHS ENDED         NINE MONTHS ENDED
                                                  SEPTEMBER 30               SEPTEMBER 30
                                              ---------------------    ------------------------
                                                1999         1998         1999          1998
                                              ---------    --------    ----------    ----------
<S>                                           <C>          <C>         <C>           <C>
Net sales...................................  $ 453,578    $521,368    $1,567,402    $1,765,622
Cost of goods sold..........................    387,235     381,180     1,238,299     1,288,130
                                              ---------    --------    ----------    ----------
GROSS MARGIN................................     66,343     140,188       329,103       477,492
                                              ---------    --------    ----------    ----------
Selling and administrative..................     32,034      28,247        89,848        86,547
Provincial mining and other taxes...........     13,194      23,517        60,863        68,288
Provision for plant closures (Note 5).......     55,403          --        55,403            --
Provision for asset impairment (Note 6).....    525,118          --       525,118            --
Other income................................     (7,480)     (7,151)      (22,083)      (29,617)
                                              ---------    --------    ----------    ----------
                                                618,269      44,613       709,149       125,218
                                              ---------    --------    ----------    ----------
OPERATING (LOSS) INCOME.....................   (551,926)     95,575      (380,046)      352,274
INTEREST EXPENSE............................     12,954      15,831        40,110        52,940
                                              ---------    --------    ----------    ----------
(LOSS) INCOME BEFORE INCOME TAXES...........   (564,880)     79,744      (420,156)      299,334
INCOME TAXES (RECOVERY).....................    (40,636)     25,040         2,781        92,504
                                              ---------    --------    ----------    ----------
NET (LOSS) INCOME...........................  $(524,244)   $ 54,704      (422,937)      206,830
                                              =========    ========
RETAINED EARNINGS, BEGINNING OF PERIOD......                              889,676       680,356
DIVIDENDS...................................                              (39,894)      (38,817)
                                                                       ----------    ----------
RETAINED EARNINGS, END OF PERIOD............                           $  426,845    $  848,369
                                                                       ==========    ==========
NET (LOSS) INCOME PER SHARE (NOTE 7)........  $   (9.66)   $   1.01    $    (7.79)   $     3.82
                                              =========    ========    ==========    ==========
DIVIDENDS PER SHARE (NOTE 8)................  $    0.25    $   0.22    $     0.74    $     0.72
                                              =========    ========    ==========    ==========
</TABLE>

              (See Notes to the Consolidated Financial Statements)
                                        2
<PAGE>   3

                    POTASH CORPORATION OF SASKATCHEWAN INC.

                 CONSOLIDATED STATEMENTS OF FINANCIAL POSITION
                         (IN THOUSANDS OF U.S. DOLLARS)

<TABLE>
<CAPTION>
                                                              SEPTEMBER 30,    DECEMBER 31,
                                                                  1999             1998
                                                              -------------    ------------
                                                               (UNAUDITED)
<S>                                                           <C>              <C>
ASSETS
Current Assets
  Cash and cash equivalents.................................   $   23,265       $   67,971
  Accounts receivable.......................................      252,920          302,974
  Inventories (Note 4)......................................      354,137          364,397
  Prepaid expenses..........................................       37,232           38,839
                                                               ----------       ----------
                                                                  667,554          774,181
Property, plant and equipment...............................    2,867,741        3,003,443
Goodwill....................................................      110,117          559,621
Other assets................................................      210,712          197,012
                                                               ----------       ----------
                                                               $3,856,124       $4,534,257
                                                               ==========       ==========
LIABILITIES
Current Liabilities
  Short-term debt...........................................   $  379,074       $   94,940
  Accounts payable and accrued charges......................      359,649          349,684
  Current portion of long-term debt.........................          786              386
                                                               ----------       ----------
                                                                  739,509          445,010
Long-term debt..............................................      444,322          933,294
Deferred income tax liability...............................      402,675          417,853
Accrued post-retirement/post-employment benefits............      149,096          131,179
Accrued reclamation costs...................................      110,998          129,399
Other non-current liabilities and deferred credits..........       17,051           23,761
                                                               ----------       ----------
                                                                1,863,651        2,080,496
                                                               ----------       ----------
SHAREHOLDERS' EQUITY
Share Capital...............................................    1,229,142        1,227,599
Contributed Surplus.........................................      336,486          336,486
Retained Earnings...........................................      426,845          889,676
                                                               ----------       ----------
                                                                1,992,473        2,453,761
                                                               ----------       ----------
                                                               $3,856,124       $4,534,257
                                                               ==========       ==========
</TABLE>

              (See Notes to the Consolidated Financial Statements)
                                        3
<PAGE>   4

                    POTASH CORPORATION OF SASKATCHEWAN INC.

                      CONSOLIDATED STATEMENTS OF CASH FLOW
                         (IN THOUSANDS OF U.S. DOLLARS)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                NINE MONTHS ENDED
                                                                   SEPTEMBER 30
                                                              ----------------------
                                                                1999         1998
                                                              ---------    ---------
<S>                                                           <C>          <C>
OPERATING ACTIVITIES
Net (loss) income...........................................  $(422,937)   $ 206,830
Items not affecting cash
  Depreciation and amortization.............................    148,205      145,810
  (Gain) loss on disposal of property, plant and
     equipment..............................................        (84)          45
  Provision for deferred income tax.........................    (12,251)      74,708
  Provision for post-retirement/post-employment benefits....      8,068        5,233
  Provision for plant closures..............................     28,953           --
  Provision for asset impairment............................    525,118           --
                                                              ---------    ---------
                                                                275,072      432,626
CHANGES IN NON-CASH OPERATING WORKING CAPITAL
  Accounts receivable.......................................     50,123       66,255
  Inventories...............................................     12,702        5,219
  Prepaid expenses..........................................      1,645      (12,785)
  Accounts payable and accrued charges......................     (1,426)     (24,111)
  Current income taxes......................................     11,839          723
Accrued reclamation costs...................................    (20,200)      (5,737)
Other non-current liabilities and deferred credits..........     (2,592)      (1,291)
                                                              ---------    ---------
CASH PROVIDED BY OPERATING ACTIVITIES.......................    327,163      460,899
                                                              ---------    ---------
INVESTING ACTIVITIES
Acquisition of Minera Yolanda S.C.M. (Note 3)...............    (36,943)          --
Additions to property, plant and equipment..................    (65,751)     (89,959)
Proceeds from disposal of property, plant and equipment.....      1,131        1,312
Additions to other assets...................................    (26,762)      (3,014)
                                                              ---------    ---------
CASH USED IN INVESTING ACTIVITIES...........................   (128,325)     (91,661)
                                                              ---------    ---------
CASH BEFORE FINANCING ACTIVITIES............................    198,838      369,238
                                                              ---------    ---------
FINANCING ACTIVITIES
Repayment of long-term obligations..........................   (489,327)    (325,739)
Proceeds from short-term debt...............................    284,134        5,982
Dividends...................................................    (39,894)     (38,817)
Issuance of shares..........................................      1,543       16,262
                                                              ---------    ---------
CASH USED IN FINANCING ACTIVITIES...........................   (243,544)    (342,312)
                                                              ---------    ---------
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS............    (44,706)      26,926
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD..............     67,971        8,756
                                                              ---------    ---------
CASH AND CASH EQUIVALENTS, END OF PERIOD....................  $  23,265    $  35,682
                                                              =========    =========
Supplemental cash flow disclosure
  Interest paid.............................................  $  38,584    $  46,221
  Income taxes paid.........................................  $   5,361    $  17,358
</TABLE>

              (See Notes to the Consolidated Financial Statements)
                                        4
<PAGE>   5

                    POTASH CORPORATION OF SASKATCHEWAN INC.

                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
                         (IN THOUSANDS OF U.S. DOLLARS)
                                  (UNAUDITED)

1.   SIGNIFICANT ACCOUNTING POLICIES

     The Company's accounting policies are in accordance with accounting
principles generally accepted in Canada ("Canadian GAAP"). These policies are
consistent with accounting principles generally accepted in the United States
("US GAAP") except as outlined in Note 10.

BASIS OF PRESENTATION

     The consolidated financial statements include the accounts of Potash
Corporation of Saskatchewan Inc. ("PCS") and its principal operating
subsidiaries (the "Company" except to the extent the context otherwise
requires):

     -- PCS Sales (Canada) Inc.
          -- PCS Sales (Iowa), Inc.
          -- PCS Sales (Indiana), Inc.
          -- Potash Corporation of Saskatchewan (Florida) Inc.
     -- Potash Corporation of Saskatchewan Transport Limited
     -- PCS Sales (USA), Inc.
     -- PCS Phosphate Company, Inc.
          -- Albright & Wilson Company (proportionately consolidated)
     -- White Springs Agricultural Chemicals, Inc.
     -- PCS Nitrogen, Inc.
          -- PCS Nitrogen Fertilizer, L.P.
          -- PCS Nitrogen Ohio, L.P.
          -- PCS Nitrogen Limited
          -- PCS Nitrogen Fertilizer Limited
          -- PCS Nitrogen Trinidad Limited
     -- PCS Cassidy Lake Company
     -- PCS Yumbes S.C.M.

2.   CHANGE IN ACCOUNTING POLICY

     The Company has adopted the provisions of section 1540 of the Canadian
Institute of Chartered Accountants Handbook "Cash Flow Statements". Under this
accounting policy, cash flows are classified as either operating, investing or
financing activities. Major classes of gross cash receipts and gross cash
payments arising from investing and financing activities are separately
disclosed. Investing and financing transactions that do not require the use of
cash or cash equivalents are excluded from the cash flow statement and disclosed
supplementally. The effect of this change on the current and prior period
consolidated statements of cash flow is not significant.

3.   ACQUISITION OF MINERA YOLANDA S.C.M.

     On July 1, 1999, the Company acquired all of the outstanding shares of
Minera Yolanda S.C.M. for cash of $37,000 (which was funded from operations).
Minera Yolanda S.C.M. is a Chilean sodium nitrate and potassium nitrate producer
which holds mining concessions on certain sodium nitrate reserves in the Atacama
desert in northern Chile. Subsequent to the acquisition, the name Minera Yolanda
S.C.M. was changed to PCS Yumbes S.C.M. ("PCS Yumbes").

                                        5
<PAGE>   6

     The acquisition has been accounted for by the purchase method of accounting
and, accordingly, the results of operations of PCS Yumbes have been included in
the consolidated financial statements from July 1, 1999.

     Net assets acquired were:

<TABLE>
<S>                                                           <C>
Working capital.............................................  $   282
Property, plant and equipment and other assets..............   31,990
Deferred tax asset..........................................    6,370
                                                              -------
                                                               38,642
Long-term liabilities.......................................    1,642
                                                              -------
Net assets acquired.........................................   37,000
Less: cash acquired.........................................       57
                                                              -------
Net cash acquisition cost...................................  $36,943
                                                              =======
</TABLE>

     Due to the fact that PCS Yumbes was not in full commercial production prior
to the acquisition, no pro forma information is being provided.

4.   INVENTORIES

<TABLE>
<CAPTION>
                                                 SEPTEMBER 30,    DECEMBER 31,
                                                     1999             1998
                                                 -------------    ------------
                                                  (UNAUDITED)
<S>                                              <C>              <C>
Finished product...............................    $157,531         $176,908
Materials and supplies.........................     108,278          106,797
Raw materials..................................      41,585           58,471
Work in process................................      46,743           22,221
                                                   --------         --------
                                                   $354,137         $364,397
                                                   ========         ========
</TABLE>

5.   PROVISION FOR PLANT CLOSURES

     In the third quarter of 1999, the Board of Directors of the Company
approved a plan to close nitrogen plants at Clinton, Iowa and LaPlatte,
Nebraska; a phosphate feed plant at Saltville, Virginia; and a phosphate
terminal at Jacksonville, Florida. The Clinton and LaPlatte closures result from
these plants being high-cost producers due to their size and technology
employed. Due to the high production costs these plants are unprofitable at both
current and projected future prices. The closure of the Saltville plant is
primarily due to higher transportation costs for raw materials and waste
products which make this plant a high-cost production facility. The terminal at
Jacksonville is being closed as the Company intends to solely utilize the more
efficient terminal at Morehead City.

     The plants at Clinton and LaPlatte were indefinitely shutdown effective
August 12, 1999. The decision to permanently close both facilities was made and
announced on August 31, 1999. Dismantling of these plants will commence once the
on-site inventory has been sold which is expected to be by year end. The
dismantling procedures include decommissioning the ammonia storage, mothballing
certain plant facilities and demolition of certain plant facilities. It is
expected that the dismantling process will be completed at both plants by the
end of 2000. Environmental procedures have commenced but cannot be completed
until the dismantling of the plants is complete. These procedures include
principally the cleaning of dismantled equipment and asbestos removal.
Subsequent to the dismantling the Company will attempt to sell the plant sites.
Annual expenditures for site security and other maintenance costs will
approximate $400 until such time that the sites are disposed of. The contractual
commitments relate to natural gas and hydrogen purchase contracts and
electricity. The number of employees terminated as a result of these closures
will be 155 hourly and 75 salaried, of which 91 have left the Company as of
September 30, 1999. The majority of the remaining employees are expected to
leave the Company during the last quarter of 1999. Eligible hourly employees
will receive severance of two

                                        6
<PAGE>   7

hundred dollars per year of service up to a maximum of 30 years service and the
salaried employees will receive severance based on number of years of service.
From January 1, 1999 to the date of closure, these plants incurred operating
losses of approximately $12,000 (including depreciation and amortization of
approximately $3,000).

     The phosphate feed plant at Saltville was closed effective September 1,
1999. This property may be sold or may be turned over to the municipal
authorities. Annual expenditures for plant security and other maintenance costs
until such time will approximate $154. The number of employees terminated as a
result of this closure will be 49, of which 28 have left the Company as of
September 30, 1999. Four employees will transfer to other facilities on January
1, 2000 and the remaining employees are expected to leave the Company during the
last quarter of 1999. The employees are entitled to severance based on number of
years of service. The severance payments will range from one to seven months'
salary. From January 1, 1999 to the date of closure, this plant incurred
operating losses of approximately $6,000 (including depreciation and
amortization of approximately $400).

     The phosphate terminal at Jacksonville was closed effective August 15,
1999. Dismantling of the terminal and environmental remediation procedures have
commenced and are expected to be completed by year end. The number of employees
terminated as a result of this closure will be nine of which five will transfer
to other facilities by the end of the year. The remaining employees are expected
to leave during the last quarter of 1999. From January 1, 1999 to the date of
closure, this terminal incurred operating losses of approximately $2,000
(including depreciation and amortization of approximately $800).

     The decision to close these facilities triggered an assessment of the fair
value of these assets, with fair value being determined based on estimated sales
proceeds less costs to sell.

     Charges associated with these closures are as follows:

<TABLE>
<CAPTION>
                                                                  AMOUNT    RESERVE      BALANCE AT
                                                     PROVISION     PAID     UTILIZED    SEPTEMBER 30
                                                     ---------    ------    --------    ------------
<S>                                                  <C>          <C>       <C>         <C>
Severance..........................................   $ 5,764     $  638      $ --        $ 5,126
Decommissioning....................................     2,902        529        --          2,373
Environmental remediation..........................     2,000         15        --          1,985
Contractual commitments............................    10,337        442        --          9,895
Non-cash parts inventory write-down................     5,447         --       254          5,193
Non-cash write-down of property, plant and
  equipment........................................    28,953         --        --         28,953
                                                      -------     ------      ----        -------
                                                      $55,403     $1,624      $254        $53,525
                                                      =======     ======      ====        =======
</TABLE>

     Of the $55,403 provision, $50,253 pertains to the nitrogen business segment
and $5,150 pertains to the phosphate business segment.

     After the write-down of the assets, the carrying amount of the remaining
assets affected by the closures is $8,690.

     These closures will require cash expenditures of approximately $21,003 all
of which is expected to be funded from operations. The majority of these
expenditures are expected to be made by the end of 2000.

6.   PROVISION FOR ASSET IMPAIRMENT

     Due to operating losses primarily caused by reduced product prices and
increased gas costs relative to certain current and expected future competitors,
the Company assessed the recoverability of the tangible and intangible assets
related to the nitrogen operations. The Company projected the undiscounted
future net cash flows from use together with the residual value of these assets
and determined that in certain cases they were less than the carrying amount.
Third party forecasts of future nitrogen prices indicate that nitrogen prices
will not reach the levels experienced in 1997 when the nitrogen operations were
purchased. These circumstances are the primary cause of a permanent impairment
in the value of certain nitrogen assets. Accordingly, the Company recorded a
provision for asset impairment of $518,001, of which $438,498 relates to
goodwill, and

                                        7
<PAGE>   8

$79,503 of which relates to property, plant and equipment at the Memphis,
Tennessee plant. The provision for asset impairment for the nitrogen operations
was calculated as the difference between the carrying amount and the
undiscounted future net cash flows from use together with residual values.
Estimates of such undiscounted future net cash flows from use together with
residual values are subject to significant uncertainties and assumptions.
Accordingly, actual results could vary significantly from such estimates.

     Due to a history of operating losses and a projection of continuing
operating losses, the Company assessed the recoverability of the tangible and
intangible assets related to the Florida Favorite Fertilizer ("FFF") operations.
The Company estimated the undiscounted future net cash flows from use together
with the residual value of these assets and determined that in certain cases
they were less than the carrying amount. Accordingly, the Company recorded a
provision for asset impairment of $7,117, of which $5,875 relates to property,
plant and equipment primarily at the Lakeland, Florida and Moultrie, Georgia
locations and $1,242 relates to intangibles. The provision for asset impairment
for the FFF operations was calculated as the difference between third party
sales offers and the carrying amount of the various properties. This provision
relates to the phosphate business segment.

     These write downs will result in a reduction of amortization expense of
approximately $11,700 and a reduction of depreciation expense of approximately
$4,900 on an annualized basis.

7.   NET (LOSS) INCOME PER SHARE (EARNINGS (LOSS) PER SHARE)

     Net (loss) income per share for the year to date is calculated on the
weighted average shares issued and outstanding during the nine months ended
September 30, 1999 of 54,259,000 (1998 -- 54,155,000). Third quarter net (loss)
income per share is calculated on the weighted average shares issued and
outstanding during the three months ended September 30, 1999 of 54,269,000
(1998 -- 54,235,000).

8.   DIVIDENDS

     Prior to June 30, 1999 the Company declared its dividends in Canadian
dollars. Subsequent to July 1, 1999 the Company declared its dividends in United
States dollars.

9.   SEGMENTED INFORMATION

     The Company has three reportable business segments: potash, phosphate and
nitrogen. These business segments are differentiated by the chemical nutrient
contained in the product that each produces with the exception of phosphate
products produced at Geismar, which are included in the nitrogen business
segment. Inter-segment net sales are made under terms which approximate market
prices.

BUSINESS SEGMENT

<TABLE>
<CAPTION>
                                               THREE MONTHS ENDED SEPTEMBER 30, 1999
                                                            (UNAUDITED)
                                --------------------------------------------------------------------
                                  POTASH      PHOSPHATE      NITROGEN     ALL OTHERS    CONSOLIDATED
                                ----------    ----------    ----------    ----------    ------------
<S>                             <C>           <C>           <C>           <C>           <C>
Net sales -- third party......  $  128,145    $  178,525    $  146,908     $     --      $  453,578
Inter-segment net sales.......       1,005           181        10,255           --              --
Gross margin..................      64,556        24,005       (22,218)          --          66,343
Provision for plant
  closures....................          --        (5,150)      (50,253)          --         (55,403)
Provision for asset
  impairment..................          --        (7,117)     (518,001)          --        (525,118)
Operating income (loss).......      50,474        10,799      (597,374)     (15,825)       (551,926)
Assets........................   1,049,803     1,358,868     1,278,124      169,329       3,856,124
</TABLE>

                                        8
<PAGE>   9

<TABLE>
<CAPTION>
                                               THREE MONTHS ENDED SEPTEMBER 30, 1998
                                                            (UNAUDITED)
                                --------------------------------------------------------------------
                                  POTASH      PHOSPHATE      NITROGEN     ALL OTHERS    CONSOLIDATED
                                ----------    ----------    ----------    ----------    ------------
<S>                             <C>           <C>           <C>           <C>           <C>
Net sales -- third party......  $  136,850    $  220,269    $  164,249     $     --      $  521,368
Inter-segment net sales.......       2,302           103        15,821           --              --
Gross margin..................      79,510        45,140        15,538           --         140,188
Operating income (loss).......      55,013        42,189        10,349      (11,976)         95,575
</TABLE>

<TABLE>
<CAPTION>
                                                NINE MONTHS ENDED SEPTEMBER 30, 1999
                                                            (UNAUDITED)
                                --------------------------------------------------------------------
                                  POTASH      PHOSPHATE      NITROGEN     ALL OTHERS    CONSOLIDATED
                                ----------    ----------    ----------    ----------    ------------
<S>                             <C>           <C>           <C>           <C>           <C>
Net sales -- third party......  $  448,051    $  570,691    $  548,660     $     --      $1,567,402
Inter-segment net sales.......       7,284         1,356        35,229           --              --
Gross margin..................     242,365       105,850       (19,112)          --         329,103
Provision for plant
  closures....................          --        (5,150)      (50,253)          --         (55,403)
Provision for asset
  impairment..................          --        (7,117)     (518,001)          --        (525,118)
Operating income (loss).......     178,892        91,834      (604,257)     (46,515)       (380,046)
Assets........................   1,049,803     1,358,868     1,278,124      169,329       3,856,124
</TABLE>

<TABLE>
<CAPTION>
                                                NINE MONTHS ENDED SEPTEMBER 30, 1998
                                                            (UNAUDITED)
                                --------------------------------------------------------------------
                                  POTASH      PHOSPHATE      NITROGEN     ALL OTHERS    CONSOLIDATED
                                ----------    ----------    ----------    ----------    ------------
<S>                             <C>           <C>           <C>           <C>           <C>
Net sales -- third party......  $  441,738    $  670,259    $  653,625     $     --      $1,765,622
Inter-segment net sales.......       9,024         1,056        51,427           --              --
Gross margin..................     255,792       148,190        73,510           --         477,492
Operating income (loss).......     184,601       145,421        57,759      (35,507)        352,274
</TABLE>

     The following information has been prepared on a nutrient basis (the
phosphate products produced at Geismar are included with phosphate data rather
than nitrogen).

NUTRIENT BASIS

<TABLE>
<CAPTION>
                                                      THREE MONTHS ENDED SEPTEMBER 30, 1999
                                                                   (UNAUDITED)
                                                -------------------------------------------------
                                                 POTASH     PHOSPHATE    NITROGEN    CONSOLIDATED
                                                --------    ---------    --------    ------------
<S>                                             <C>         <C>          <C>         <C>
Net sales -- third party......................  $128,145    $199,206     $126,227     $  453,578
Gross margin..................................    64,556      25,094      (23,307)        66,343
</TABLE>

<TABLE>
<CAPTION>
                                                      THREE MONTHS ENDED SEPTEMBER 30, 1998
                                                                   (UNAUDITED)
                                                -------------------------------------------------
                                                 POTASH     PHOSPHATE    NITROGEN    CONSOLIDATED
                                                --------    ---------    --------    ------------
<S>                                             <C>         <C>          <C>         <C>
Net sales -- third party......................  $136,850    $244,982     $139,536     $  521,368
Gross margin..................................    79,510      48,132       12,546        140,188
</TABLE>

<TABLE>
<CAPTION>
                                                      NINE MONTHS ENDED SEPTEMBER 30, 1999
                                                                   (UNAUDITED)
                                                -------------------------------------------------
                                                 POTASH     PHOSPHATE    NITROGEN    CONSOLIDATED
                                                --------    ---------    --------    ------------
<S>                                             <C>         <C>          <C>         <C>
Net sales -- third party......................  $448,051    $637,496     $481,855     $1,567,402
Gross margin..................................   242,365     114,481      (27,743)       329,103
</TABLE>

<TABLE>
<CAPTION>
                                                      NINE MONTHS ENDED SEPTEMBER 30, 1998
                                                                   (UNAUDITED)
                                                -------------------------------------------------
                                                 POTASH     PHOSPHATE    NITROGEN    CONSOLIDATED
                                                --------    ---------    --------    ------------
<S>                                             <C>         <C>          <C>         <C>
Net sales -- third party......................  $441,738    $741,698     $582,186     $1,765,622
Gross margin..................................   255,792     161,081       60,619        477,492
</TABLE>

                                        9
<PAGE>   10

10. UNITED STATES GENERALLY ACCEPTED ACCOUNTING PRINCIPLES (US GAAP)

     A description of certain significant differences between Canadian GAAP and
US GAAP follows:

     Marketable securities: The Company's investment in Israel Chemicals Ltd.
("ICL") is stated at cost. US GAAP would require that this investment be
classified as available-for-sale and be stated at market value.

     Foreign currency translation adjustment:  The foreign currency translation
adjustment results from the restatement of prior periods so that all periods
presented are in the same reporting currency. US GAAP requires that the
comparative Consolidated Statements of Income and the Consolidated Statements of
Cash Flow be translated using weighted average exchange rates for the applicable
periods. In contrast, the Consolidated Statements of Financial Position are
translated using the exchange rates at the end of the applicable periods in
accordance with Canadian GAAP. The difference in these exchange rates gives rise
to the foreign currency translation adjustment.

     Net sales: Sales are recorded net of freight costs (less related revenues)
and transportation and distribution expenses. US GAAP would require that net
freight costs be included in cost of goods sold and transportation and
distribution expenses be included in selling and administrative expenses.

     Comprehensive income: Comprehensive income is not recognized under Canadian
GAAP. US GAAP would require the recognition of comprehensive income.

     Provision for asset impairment: The provision for asset impairment under
Canadian GAAP is measured based on the undiscounted cash flow from use together
with the residual value of the asset. US GAAP would require that the provision
for asset impairment be measured based on fair value, which resulted in
additional write downs of property, plant and equipment and goodwill for US GAAP
purposes.

     Provision for plant closures: The provision for plant closures under
Canadian GAAP includes the non-cash parts inventory write down. US GAAP would
require that this write down be included in selling and administrative expenses.

     In 1995, the Financial Accounting Standards Board issued Statement No. 123
"Accounting for Stock-Based Compensation". As permitted under this statement,
the Company has decided to continue to apply APB Opinion 25 for measurement of
compensation of employees.

     The application of US GAAP, as described above, would have had the
following approximate effects on net (loss) income, net (loss) income per share,
total assets and shareholders' equity:

<TABLE>
<CAPTION>
                                               THREE MONTHS ENDED          NINE MONTHS ENDED
                                                  SEPTEMBER 30                SEPTEMBER 30
                                            ------------------------    ------------------------
                                               1999          1998          1999          1998
                                            ----------    ----------    ----------    ----------
                                                  (UNAUDITED)                 (UNAUDITED)
<S>                                         <C>           <C>           <C>           <C>
Net (loss) income as reported -- Canadian
GAAP......................................  $ (524,244)   $   54,704    $ (422,937)   $  206,830
Items (increasing) decreasing reported net
  (loss) income
  Provision for asset impairment..........    (217,953)           --      (217,953)           --
  Deferred income taxes...................      50,590            --        50,590            --
                                            ----------    ----------    ----------    ----------
Approximate net (loss) income -- US GAAP..  $ (691,607)   $   54,704    $ (590,300)   $  206,830
                                            ==========    ==========    ==========    ==========
Weighted average shares outstanding -- US
  GAAP....................................  54,269,000    54,235,000    54,259,000    54,155,000
                                            ==========    ==========    ==========    ==========
Approximate net (loss) income per share --
  US GAAP.................................  $   (12.74)   $     1.01    $   (10.88)   $     3.82
                                            ==========    ==========    ==========    ==========
</TABLE>

                                       10
<PAGE>   11

<TABLE>
<CAPTION>
                                                              SEPTEMBER 30,    DECEMBER 31,
                                                                  1999             1998
                                                              -------------    ------------
                                                               (UNAUDITED)
<S>                                                           <C>              <C>
Total assets as reported -- Canadian GAAP...................   $3,856,124       $4,534,257
Items increasing (decreasing) reported total assets:
  Available-for-sale security (unrealized holding gain).....       10,839           14,906
  Property, plant and equipment.............................     (168,632)              --
  Goodwill..................................................      (49,321)              --
                                                               ----------       ----------
Approximate total assets -- US GAAP.........................   $3,649,010       $4,549,163
                                                               ==========       ==========
</TABLE>

<TABLE>
<CAPTION>
                                                              SEPTEMBER 30,    DECEMBER 31,
                                                                  1999             1998
                                                              -------------    ------------
                                                               (UNAUDITED)
<S>                                                           <C>              <C>
Total shareholders' equity as reported -- Canadian GAAP.....   $1,992,473       $2,453,761
Items increasing (decreasing) reported shareholders' equity:
  Other comprehensive income, net of tax....................        6,503            8,944
  Provision for asset impairment............................     (217,953)              --
  Deferred income taxes.....................................       50,590               --
                                                               ----------       ----------
Approximate shareholders' equity -- US GAAP.................   $1,831,613       $2,462,705
                                                               ==========       ==========
</TABLE>

11. COMPARATIVE FIGURES

     Certain of the prior period's figures have been reclassified to conform
with the current period's presentation.

                                       11
<PAGE>   12

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

     The narrative included under this Management's Discussion and Analysis of
Financial Condition and Results of Operations has been prepared on a nutrient
basis (the phosphate products produced at Geismar are included with phosphate
data rather than nitrogen) rather than a subsidiary or business segment basis
(see Note 9 to the unaudited consolidated financial statements) and with
reference to the unaudited consolidated financial statements reported under
Canadian GAAP.

OVERVIEW

Plant Closures and Provision for Asset Impairment

     In the third quarter of 1999, the Board of Directors of the Company
approved a plan to close nitrogen plants at Clinton, Iowa and LaPlatte,
Nebraska; a phosphate feed plant at Saltville, Virginia; and a phosphate
terminal at Jacksonville, Florida. The Clinton and LaPlatte closures result from
these plants being high-cost producers due to their size and technology
employed. Due to the high production costs, these plants are unprofitable at
both current and projected future prices. The closure of the Saltville plant is
primarily due to higher transportation costs for raw materials and waste
products which make this plant a high-cost production facility. The terminal at
Jacksonville is being closed as the Company intends to solely utilize the more
efficient terminal at Morehead City.

     The plants at Clinton and LaPlatte were indefinitely shutdown effective
August 12, 1999. The decision to permanently close both facilities was made and
announced on August 31, 1999. Dismantling of these plants will commence once the
on-site inventory has been sold which is expected to be by year end. The
dismantling procedures include decommissioning the ammonia storage, mothballing
certain plant facilities and demolition of certain plant facilities. It is
expected that the dismantling process will be completed at both plants by the
end of 2000. Environmental procedures have commenced but cannot be completed
until the dismantling of the plants is complete. These procedures include
principally the cleaning of dismantled equipment and asbestos removal.
Subsequent to the dismantling the Company will attempt to sell the plant sites.
Annual expenditures for site security and other maintenance costs will
approximate $0.4 million until such time that the sites are disposed of. The
contractual commitments relate to natural gas and hydrogen purchase contracts
and electricity. The number of employees terminated as a result of these
closures will be 155 hourly and 75 salaried, of which 91 have left the Company
as of September 30, 1999. The majority of the remaining employees are expected
to leave the Company during the last quarter of 1999. Eligible hourly employees
will receive severance of two hundred dollars per year of service up to a
maximum of 30 years service and the salaried employees will receive severance
based on number of years of service. From January 1, 1999 to the date of
closure, these plants incurred operating losses of approximately $12.0 million
(including depreciation and amortization of approximately $3.0 million).

     The phosphate feed plant at Saltville was closed effective September 1,
1999. This property may be sold or may be turned over to the municipal
authorities. Annual expenditures for plant security and other maintenance costs
until such time will approximate $0.2 million. The number of employees
terminated as a result of this closure will be 49, of which 28 have left the
Company as of September 30, 1999. Four employees will transfer to other
facilities on January 1, 2000 and the remaining employees are expected to leave
the Company during the last quarter of 1999. The employees are entitled to
severance based on number of years of service. The severance payments will range
from one to seven months' salary. From January 1, 1999 to the date of closure,
this plant incurred operating losses of approximately $6.0 million (including
depreciation and amortization of approximately $0.4 million).

     The phosphate terminal at Jacksonville was closed effective August 15,
1999. Dismantling of the terminal and environmental remediation procedures have
commenced and are expected to be completed by year end. The number of employees
terminated as a result of this closure will be nine of which five will transfer
to other facilities by the end of the year. The remaining employees are expected
to leave during the last quarter of 1999. From January 1, 1999 to the date of
closure, this terminal incurred operating losses of approximately $2.0 million
(including depreciation and amortization of approximately $.08 million).
                                       12
<PAGE>   13

     The decision to close these facilities triggered an assessment of the fair
value of these assets, with fair value being determined based on estimated sales
proceeds less costs to sell.

     Charges associated with these closures are as follows (in thousands of US
dollars):

<TABLE>
<CAPTION>
                                                                  AMOUNT    RESERVE      BALANCE AT
                                                     PROVISION     PAID     UTILIZED    SEPTEMBER 30
                                                     ---------    ------    --------    ------------
<S>                                                  <C>          <C>       <C>         <C>
Severance..........................................   $ 5,764     $  638      $ --        $ 5,126
Decommissioning....................................     2,902        529        --          2,373
Environmental remediation..........................     2,000         15        --          1,985
Contractual commitments............................    10,337        442        --          9,895
Non-cash parts inventory write-down................     5,447         --       254          5,193
Non-cash write-down of property, plant and
  equipment........................................    28,953         --        --         28,953
                                                      -------     ------      ----        -------
                                                      $55,403     $1,624      $254        $53,525
                                                      =======     ======      ====        =======
</TABLE>

     Of the $55.4 million provision, $50.3 million pertains to the nitrogen
business segment and $5.1 million pertains to the phosphate business segment.

     After the write down of the assets, the carrying amount of the remaining
assets affected by the closures is $8.7 million.

     These closures will require cash expenditures of approximately $21.0
million all of which is expected to be funded from operations. The majority of
these expenditures are expected to be incurred by the end of 2000.

     The closure of the nitrogen plants will result in an annualized reduction
in production capacity of 420,000 tonnes of ammonia, 79,000 tonnes of ammonium
nitrate and 599,000 tonnes of nitrogen solutions. Relative to 1998 annual
production, these reductions are equivalent to 28 percent of domestic
manufactured ammonia sales, 17 percent of ammonium nitrate sales and 28 percent
of nitrogen solutions sales. The closure of the feed supplement plant at
Saltville will result in an annual decrease of 78,000 tonnes of feed supplement
sales, which is equivalent to 10 percent of 1998 annual sales. The annual
pre-tax savings associated with these closures is expected to be approximately
$20.0 million.

     The Company has also indefinitely closed the Suwannee River Hemihydrate
plant and the Suwannee River plant DAP train. In total, these actions reduce the
Company's P(2)O(5) output by 200,000 tonnes and its DAP production by 515,000
tonnes on an annual basis. Relative to 1998 annual production, these reductions
are equivalent to 26 percent of DAP sales and 12 percent of liquid fertilizer
sales. The annual pre-tax savings associated with these closures is expected to
be approximately $7.5 million.

     Due to operating losses primarily caused by reduced product prices and
increased gas costs relative to certain current and expected future competitors,
the Company assessed the recoverability of the tangible and intangible assets
related to the nitrogen operations. The Company projected the undiscounted
future net cash flows from use together with the residual value of these assets
and determined that in certain cases they were less than the carrying amount.
Third party forecasts of future nitrogen prices indicate that nitrogen prices
will not reach the levels experienced in 1997 when the nitrogen operations were
purchased. These circumstances are the primary cause of a permanent impairment
in the value of certain nitrogen assets. Accordingly, the Company recorded a
provision for asset impairment of $518.0 million, of which $438.5 million
relates to goodwill, and $79.5 million of which relates to property, plant and
equipment at the Memphis, Tennessee plant. The provision for asset impairment
for the nitrogen operations was calculated as the difference between the
carrying amount and the undiscounted future net cash flows from use together
with residual values. Estimates of such undiscounted future net cash flows from
use together with residual values are subject to significant uncertainties and
assumptions. Accordingly, actual results could vary significantly from such
estimates.

     Due to a history of operating losses and a projection of continuing
operating losses, the Company assessed the recoverability of the tangible and
intangible assets related to the Florida Favorite Fertilizer ("FFF") operations.
The Company estimated the undiscounted future net cash flows from use together
with the

                                       13
<PAGE>   14

residual value of these assets and determined that in certain cases they were
less than the carrying amount. Accordingly, the Company recorded a provision for
asset impairment of $7.1 million, of which $5.9 million relates to property,
plant and equipment primarily at the Lakeland, Florida and Moultrie, Georgia
locations and $1.2 million relates to intangibles. The provision for asset
impairment for the FFF operations was calculated as the difference between third
party sales offers and the carrying amount of the various properties.

     These write downs will result in a reduction of amortization expense of
approximately $11.7 million and a reduction of depreciation expense of
approximately $4.9 million on an annualized basis.

     Also during the third quarter the Company realized income of $0.9 million
relating to the reversal of environmental accruals. The Company accrued $18.6
million relating to environmental liabilities at FFF and reversed $19.5 million
of other environmental accruals relating to certain phosphate properties where
remediation efforts were virtually completed and the full amount of the accrual
was not required.

  Third Quarter

<TABLE>
<CAPTION>
                                                 THREE MONTHS ENDED
                                                    SEPTEMBER 30
                                                ---------------------     INCREASE
                                                  1999         1998      (DECREASE)    % CHANGE
($000'S)                                        ---------    --------    ----------    --------
<S>                                             <C>          <C>         <C>           <C>
Net Sales
  North American..............................  $ 287,754    $361,169    $ (73,415)        (20)
  Offshore....................................    165,824     160,199        5,625           4
                                                ---------    --------    ---------      ------
                                                $ 453,578    $521,368    $ (67,790)        (13)
                                                =========    ========    =========      ======
Gross Margin..................................  $  66,343    $140,188    $ (73,845)        (53)
                                                =========    ========    =========      ======
Provision for plant closures..................  $  55,403    $     --    $ (55,403)         --
                                                =========    ========    =========      ======
Provision for asset impairment................  $ 525,118    $     --    $(525,118)         --
                                                =========    ========    =========      ======
Operating (Loss) Income.......................  $(551,926)   $ 95,575    $(647,501)       (677)
                                                =========    ========    =========      ======
Net (Loss) Income.............................  $(524,244)   $ 54,704    $(578,948)     (1,058)
                                                =========    ========    =========      ======
(Loss) Earnings per Share (dollars)...........  $   (9.66)   $   1.01    $  (10.67)     (1,056)
                                                =========    ========    =========      ======
</TABLE>

     In the third quarter of 1999, an increase in offshore net sales revenue was
more than offset by lower domestic net sales revenue. Potash net sales revenue
decreased $8.7 million, phosphate net sales revenue decreased by $45.8 million
and nitrogen net sales revenue decreased by $13.3 million as compared to the
third quarter of 1998.

     North American net sales revenue for the third quarter of 1999 represented
63 percent (1998 -- 69 percent) of total net sales revenue and offshore sales
represented 37 percent (1998 -- 31 percent).

     Gross margin for potash products was $64.5 million (a decrease of $15.0
million from third quarter 1998); for phosphate products $25.1 million (a
decrease of $23.0 million from 1998); and for nitrogen products a negative $23.3
million (a decrease of $35.9 million from the positive gross margin reported in
1998).

     The decrease from net income of $54.7 million in the third quarter of 1998
to a net loss of $524.2 million was primarily attributable to the provisions for
plant closures and asset impairment of $580.5 million and a $73.8 million
reduction in gross margin partially offset by a $65.7 million reduction in
income taxes.

                                       14
<PAGE>   15

  Year to Date

<TABLE>
<CAPTION>
                                                 NINE MONTHS ENDED
                                                    SEPTEMBER 30
                                              ------------------------     INCREASE
                                                 1999          1998       (DECREASE)    % CHANGE
($000'S)                                      ----------    ----------    ----------    --------
<S>                                           <C>           <C>           <C>           <C>
Net Sales
  North American............................  $1,099,171    $1,264,249    $(165,078)       (13)
  Offshore..................................     468,231       501,373      (33,142)        (7)
                                              ----------    ----------    ---------       ----
                                              $1,567,402    $1,765,622    $(198,220)       (11)
                                              ==========    ==========    =========       ====
Gross Margin................................  $  329,103    $  477,492    $(148,389)       (31)
                                              ==========    ==========    =========       ====
Provision for plant closures................  $   55,403    $       --    $ (55,403)        --
                                              ==========    ==========    =========       ====
Provision for asset impairment..............  $  525,118    $       --    $(525,118)        --
                                              ==========    ==========    =========       ====
Operating (Loss) Income.....................  $ (380,046)   $  352,274    $(732,320)      (208)
                                              ==========    ==========    =========       ====
Net (Loss) Income...........................  $ (422,937)   $  206,830    $(626,767)      (307)
                                              ==========    ==========    =========       ====
(Loss) Earnings per Share (dollars).........  $    (7.79)   $     3.82    $  (11.61)      (304)
                                              ==========    ==========    =========       ====
</TABLE>

     In the first nine months of 1999, an increase in net sales revenue in
potash of $6.3 million was more than offset by decreases in phosphate and
nitrogen net sales revenue of $104.2 million and $100.3 million, respectively,
resulting in a net decrease of $198.2 million in net sales revenue as compared
to the first nine months of 1998.

     North American net sales revenue for the first nine months of 1999
represented 70 percent (1998 -- 72 percent) of total net sales revenue and
offshore sales represented 30 percent (1998 -- 28 percent).

     Gross margin for potash products was $242.3 million (a decrease of $13.4
million from the first nine months of 1998); for phosphate products $114.5
million (a decrease of $46.6 million from 1998); and for nitrogen products a
negative $27.7 million (a decrease of $88.4 million from the positive gross
margin reported in 1998).

     The decrease from net income of $206.8 million in the first nine months of
1998 to a net loss of $422.9 million was primarily attributable to the
provisions for plant closures and asset impairment of $580.5 million and a
reduction in gross margin of $148.4 million, which were partially offset by a
$12.8 million decrease in interest expense and a $89.7 million reduction in
income taxes.

POTASH REVENUE

  Third Quarter

<TABLE>
<CAPTION>
                                THREE MONTHS ENDED SEPTEMBER 30
                           ------------------------------------------
                               1999 SALES             1998 SALES                $000'S              TONNES (000'S)
NET SALES                  -------------------    -------------------    --------------------    --------------------
                                       TONNES                 TONNES      INCREASE       %        INCREASE       %
                            $000'S     (000'S)     $000'S     (000'S)    (DECREASE)    CHANGE    (DECREASE)    CHANGE
                           --------    -------    --------    -------    ----------    ------    ----------    ------
<S>                        <C>         <C>        <C>         <C>        <C>           <C>       <C>           <C>
North American...........  $ 53,383       669     $ 66,375       780      $(12,992)     (20)        (111)       (14)
Offshore.................    74,762       780       70,475       739         4,287        6           41          6
                           --------     -----     --------     -----      --------      ---         ----        ---
                           $128,145     1,449     $136,850     1,519      $ (8,705)      (6)         (70)        (5)
                           ========     =====     ========     =====      ========      ===         ====        ===
</TABLE>

     Gross margin for potash products in the third quarter of 1999 was $64.5
million (1998 -- 79.5 million) or 72 percent (1998 -- 57 percent) of positive
consolidated gross margin.

     Potash prices in the offshore market were flat as compared to the third
quarter of 1998.

     North American potash prices decreased by 6 percent as compared to the
third quarter of 1998 due principally to lower prices implemented by a
competitor.

                                       15
<PAGE>   16

     Offshore sales volumes were up 6 percent as compared to third quarter 1998.
Increased sales volumes to India, Korea and Indonesia were partially offset by
decreased sales to China, Malaysia and Japan. After a slow start, there was also
some improvement in sales to the Brazilian market.

     North American sales volumes decreased 14 percent from third quarter 1998
levels as low grain prices continue to dampen fertilizer sales. In the North
American market, the 0.669 million tonnes sales volumes for the third quarter
were sourced as follows: 0.653 million tonnes (1998 -- 0.761 million tonnes)
came from Saskatchewan, 0.002 million tonnes (1998 -- 0.003 million tonnes) from
New Brunswick and 0.014 million tonnes (1998 -- 0.016 million tonnes) from Utah.

     Offshore net sales revenue from potash represented 58 percent (1998 -- 52
percent) of the Company's potash net sales revenue. Higher offshore sales
volumes resulted in a $5.1 million increase in offshore potash net sales
revenue. This was partially offset by a reduction in net sales revenue of $0.8
million due to reduced sales prices. In the offshore market, 0.570 million
tonnes (1998 -- 0.604 million tonnes) were sold through Canpotex and the
remaining 0.210 million tonnes (1998 -- 0.135 million tonnes) were produced by
PCS New Brunswick and sold and delivered by PCS Sales.

     North American net sales revenue from potash operations represented 42
percent (1998 -- 48 percent) of the Company's potash net sales revenue. Lower
North American potash sales volumes resulted in a $9.5 million decrease in North
American potash net sales revenue over third quarter 1998. This was combined
with a decrease in net sales revenue of $3.5 million due to a decrease in sales
prices.

  Year to Date

<TABLE>
<CAPTION>
                                 NINE MONTHS ENDED SEPTEMBER 30
                           ------------------------------------------
                               1999 SALES             1998 SALES                $000'S              TONNES (000'S)
NET SALES                  -------------------    -------------------    --------------------    --------------------
                                       TONNES                 TONNES      INCREASE       %        INCREASE       %
                            $000'S     (000'S)     $000'S     (000'S)    (DECREASE)    CHANGE    (DECREASE)    CHANGE
                           --------    -------    --------    -------    ----------    ------    ----------    ------
<S>                        <C>         <C>        <C>         <C>        <C>           <C>       <C>           <C>
North American...........  $185,453     2,216     $180,480     2,157       $4,973         3           59          3
Offshore.................   262,598     2,896      261,258     3,004        1,340         1         (108)        (4)
                           --------     -----     --------     -----       ------        --         ----        ---
                           $448,051     5,112     $441,738     5,161       $6,313         1          (49)        (1)
                           ========     =====     ========     =====       ======        ==         ====        ===
</TABLE>

     Gross margin for potash products in the first nine months of 1999 was
$242.4 million (1998 -- $255.8 million) or 68 percent (1998 -- 54 percent) of
positive consolidated gross margin.

     Potash prices in the offshore market rose 4 percent as compared to the
first nine months of 1998 primarily due to higher contract prices in China,
Japan and Korea.

     North American potash prices were flat as compared to the first nine months
of 1998.

     Offshore sales volumes were down 4 percent as compared to the first nine
months of 1998. The decrease from the first nine months of 1998 was primarily
due to lower sales to China.

     North American sales volumes increased 3 percent as compared to the first
nine months of 1998 due in part to the additional granular product available
from PCS Cassidy Lake. In the North American market, the 2.216 million tonnes
sales volumes for the first nine months were sourced as follows: 2.132 million
tonnes (1998 -- 2.002 million tonnes) came from Saskatchewan, 0.041 million
tonnes (1998 -- 0.112 million tonnes) from New Brunswick and 0.043 million
tonnes (1998 -- 0.043 million tonnes) from Utah.

     Offshore net sales revenue from potash represented 59 percent (1998 -- 59
percent) of the Company's potash net sales revenue. Higher offshore prices
resulted in a $8.8 million increase in offshore potash net sales revenue. This
was partially offset by a reduction in net sales revenue of $7.5 million due to
reduced sales volumes (which was primarily due to lower sales to China). In the
offshore market, 2.365 million tonnes (1998 -- 2.555 million tonnes) were sold
through Canpotex and the remaining 0.531 million tonnes (1998 -- 0.449 million
tonnes) were produced by PCS New Brunswick and sold and delivered by PCS Sales.

                                       16
<PAGE>   17

     North American net sales revenue from potash operations represented 41
percent (1998 -- 41 percent) of the Company's potash net sales revenue. Higher
North American potash sales volumes resulted in a $3.6 million increase in North
American potash net sales revenue over the first nine months of 1998. This was
combined with an increase in net sales revenue of $1.4 million due to an
increase in sales prices.

PHOSPHATE REVENUE

  Third Quarter

<TABLE>
<CAPTION>
                                THREE MONTHS ENDED SEPTEMBER 30
                           ------------------------------------------
                               1999 SALES             1998 SALES                $000'S              TONNES (000'S)
NET SALES                  -------------------    -------------------    --------------------    --------------------
                                       TONNES                 TONNES      INCREASE       %        INCREASE       %
                            $000'S     (000'S)     $000'S     (000'S)    (DECREASE)    CHANGE    (DECREASE)    CHANGE
                           --------    -------    --------    -------    ----------    ------    ----------    ------
<S>                        <C>         <C>        <C>         <C>        <C>           <C>       <C>           <C>
Liquids..................  $ 71,605      357      $ 87,406       417      $(15,801)     (18)         (60)       (14)
Solids...................    70,527      421        95,952       503       (25,425)     (26)         (82)       (15)
Feed supplements.........    40,501      165        42,744       171        (2,243)      (5)          (6)        (4)
Industrial products......    16,573       44        18,880        51        (2,307)     (12)          (7)       (12)
                           --------      ---      --------     -----      --------      ---         ----        ---
                           $199,206      987      $244,982     1,142      $(45,776)     (19)        (155)       (14)
                           ========      ===      ========     =====      ========      ===         ====        ===
North American...........  $122,481      530      $166,224       717      $(43,743)     (26)        (187)       (26)
Offshore.................    76,725      457        78,758       425        (2,033)      (3)          32          8
                           --------      ---      --------     -----      --------      ---         ----        ---
                           $199,206      987      $244,982     1,142      $(45,776)     (19)        (155)       (14)
                           ========      ===      ========     =====      ========      ===         ====        ===
</TABLE>

     Gross margin for phosphate products for third quarter 1999 was $25.1
million (1998 -- $48.1 million) or 28 percent (1998 -- 34 percent) of positive
consolidated gross margin.

     On an overall basis, phosphate prices in the North American market
decreased marginally as compared to third quarter 1998. The largest single
decrease was in the price of DAP which declined by 12 percent. More than
one-half of the price declines in phosphate were due to an imbalance in the
supply and demand of DAP.

     Liquid phosphate prices in the offshore markets were down 5 percent over
third quarter 1998 and prices of solid phosphate decreased by 13 percent over
third quarter 1998. Weak domestic demand and large North American inventories
stimulated additional US exports of DAP from suppliers outside of PhosChem which
resulted in lower offshore prices. The offshore price of feed supplements
increased by 5 percent over the same period.

     Overall, North American phosphate sales volumes declined 26 percent as
compared to third quarter 1998. This was primarily due to high field inventory
carryover from the spring season. North American solid phosphate sales volumes
decreased by 50 percent while liquid sales volumes declined 20 percent. North
American sales volumes of industrial products decreased by 12 percent primarily
due to higher US imports while feed supplement sales volumes were down 12
percent principally due to increased competition in the industry generally.

     Liquid and solid offshore sales volumes increased by 2 percent and 8
percent, respectively, compared to third quarter 1998. Solid volumes were higher
primarily due to increased sales to India, Pakistan, China and Bangladesh.
Offshore feed supplement sales volumes increased 78 percent in the same period
primarily due to a new customer in Venezuela and improved sales volumes in the
Caribbean.

     North American phosphate net sales revenue accounted for 61 percent
(1998 -- 68 percent) of total phosphate net sales revenue and 54 percent
(1998 -- 63 percent) of sales volumes. Offshore sales accounted for 39 percent
(1998 -- 32 percent) of total phosphate net sales revenue and 46 percent
(1998 -- 37 percent) of sales volumes. In the third quarter of 1999, 41 percent
(1998 -- 35 percent) of the Company's total phosphate net sales revenue was
earned from non-fertilizer products, which represented 31 percent (1998 -- 28
percent) of its phosphate sales volumes.

                                       17
<PAGE>   18

  Year to Date

<TABLE>
<CAPTION>
                                 NINE MONTHS ENDED SEPTEMBER 30
                           ------------------------------------------
                               1999 SALES             1998 SALES                $000'S              TONNES (000'S)
NET SALES                  -------------------    -------------------    --------------------    --------------------
                                       TONNES                 TONNES      INCREASE       %        INCREASE       %
                            $000'S     (000'S)     $000'S     (000'S)    (DECREASE)    CHANGE    (DECREASE)    CHANGE
                           --------    -------    --------    -------    ----------    ------    ----------    ------
<S>                        <C>         <C>        <C>         <C>        <C>           <C>       <C>           <C>
Liquids..................  $232,977     1,063     $263,659     1,216     $ (30,682)     (12)        (153)       (13)
Solids...................   219,751     1,222      276,454     1,459       (56,703)     (20)        (237)       (16)
Feed supplements.........   129,957       527      137,565       544        (7,608)      (6)         (17)        (3)
Industrial products......    54,811       145       64,020       172        (9,209)     (14)         (27)       (16)
                           --------     -----     --------     -----     ---------      ---         ----        ---
                           $637,496     2,957     $741,698     3,391     $(104,202)     (14)        (434)       (13)
                           ========     =====     ========     =====     =========      ===         ====        ===
North American...........  $467,287     1,987     $544,439     2,315     $ (77,152)     (14)        (328)       (14)
Offshore.................   170,209       970      197,259     1,076       (27,050)     (14)        (106)       (10)
                           --------     -----     --------     -----     ---------      ---         ----        ---
                           $637,496     2,957     $741,698     3,391     $(104,202)     (14)        (434)       (13)
                           ========     =====     ========     =====     =========      ===         ====        ===
</TABLE>

     Gross margin for phosphate products for the first nine months of 1999 was
$114.5 million (1998 -- $161.1 million) or 32 percent (1998 -- 34 percent) of
positive consolidated gross margin.

     Overall, phosphate prices in the North American market were flat as
compared to the first nine months of 1998.

     In the offshore markets, overall phosphate prices were down 4 percent as
compared to the first nine months of 1998. Solid phosphate prices were down 7
percent over first nine months 1998 and prices of liquid phosphates were flat.
The offshore price of feed supplements, affected by the currency devaluations
and financial difficulties in Asian countries, decreased by 6 percent over the
same period.

     Overall, North American phosphate sales volumes were down 14 percent as
compared to the first nine months of 1998. North American solid phosphate sales
volumes decreased by 21 percent while liquid sales volumes declined 11 percent.
North American sales volumes of industrial products decreased by 16 percent
primarily due to higher US imports while feed supplement sales volumes were down
9 percent principally due to increased competition in the industry generally.

     Liquid and solid offshore sales volumes decreased by 18 percent and 11
percent, respectively, compared to the first nine months of 1998. Solid volumes
were lower due principally to lower sales volumes to Latin America. Liquid
volumes were affected by the currency devaluation and credit conditions in
Brazil. Offshore feed supplement sales volumes increased 42 percent in the same
period primarily due to a new customer in Venezuela and improved sales volumes
in the Caribbean.

     North American phosphate net sales revenue accounted for 73 percent
(1998 -- 73 percent) of total phosphate net sales revenue and 67 percent
(1998 -- 68 percent) of sales volumes. Offshore sales accounted for 27 percent
(1998 -- 27 percent) of total phosphate net sales revenue and 33 percent
(1998 -- 32 percent) of sales volumes. In the first nine months of 1999, 40
percent (1998 -- 36 percent) of the Company's total phosphate net sales revenue
was earned from non-fertilizer products, which represented 33 percent (1998 --
30 percent) of its phosphate sales volumes.

                                       18
<PAGE>   19

NITROGEN REVENUE

  Third Quarter

     Sales volumes of Other nitrogen products for 1999 and 1998 include tonnes
for the by-product carbon dioxide.

<TABLE>
<CAPTION>
                                THREE MONTHS ENDED SEPTEMBER 30
                           ------------------------------------------
                               1999 SALES             1998 SALES                $000'S              TONNES (000'S)
NET SALES                  -------------------    -------------------    --------------------    --------------------
                                       TONNES                 TONNES      INCREASE       %        INCREASE       %
                            $000'S     (000'S)     $000'S     (000'S)    (DECREASE)    CHANGE    (DECREASE)    CHANGE
                           --------    -------    --------    -------    ----------    ------    ----------    ------
<S>                        <C>         <C>        <C>         <C>        <C>           <C>       <C>           <C>
Ammonia..................  $ 41,442       407     $ 53,887       410      $(12,445)     (23)         (3)         (1)
Urea.....................    35,430       325       36,967       255        (1,537)      (4)         70          28
Nitrogen solutions.......    12,049       187       12,736       155          (687)      (5)         32          20
Other nitrogen
  products...............    25,632       576       31,181       536        (5,549)     (18)         40           7
                           --------     -----     --------     -----      --------      ---         ---         ---
                            114,553     1,495      134,771     1,356       (20,218)     (15)        139          10
Purchased products.......    11,674       105        4,765        40         6,909      145          65         157
                           --------     -----     --------     -----      --------      ---         ---         ---
                           $126,227     1,600     $139,536     1,396      $(13,309)     (10)        204          15
                           ========     =====     ========     =====      ========      ===         ===         ===
North American...........  $111,890     1,326     $128,570     1,189      $(16,680)     (13)        137          11
Offshore.................    14,337       274       10,966       207         3,371       31          67          33
                           --------     -----     --------     -----      --------      ---         ---         ---
                           $126,227     1,600     $139,536     1,396      $(13,309)     (10)        204          15
                           ========     =====     ========     =====      ========      ===         ===         ===
</TABLE>

     In the third quarter of 1999, gross margin for nitrogen products was a
negative $23.3 million (1998 -- positive $12.6 million).

     Weak domestic demand combined with the continued absence of China from
offshore urea markets and reduced cash production costs for Former Soviet Union
("FSU") producers due to lower gas prices and currency weakness in the FSU
countries continued to put pressure on prices. Urea prices were down 25 percent;
ammonia prices down 22 percent and nitrogen solution prices down 22 percent when
compared to third quarter 1998. On an overall basis, prices declined 21 percent
as compared to the third quarter of 1998.

     North American sales volumes of manufactured products increased 6 percent
on an overall basis over third quarter 1998. Sales volume increases were as
follows: urea 7 percent and nitrogen solutions 20 percent. Sales volumes for
ammonia were down 2 percent and sales volumes of other nitrogen products were up
7 percent over the same period.

     Offshore sales volumes for manufactured products, on an overall basis, were
up 33 percent as compared to the third quarter of 1998. Offshore sales volumes
of urea increased 149 percent and ammonia increased 9 percent as compared to the
third quarter of 1998.

     The Company continued to sell a large portion of its North American
nitrogen production to the more stable industrial market. Non-fertilizer
products represented 61 percent (1998 -- 62 percent) of nitrogen sales volumes
and 58 percent (1998 -- 59 percent) of net sales revenue.

     North American net sales revenue for the third quarter of 1999 accounted
for 89 percent (1998 -- 92 percent) of the total nitrogen net sales revenue.

                                       19
<PAGE>   20

  Year to Date

     Sales volumes of Other nitrogen products for 1999 and 1998 include tonnes
for the by-product carbon dioxide.

<TABLE>
<CAPTION>
                                 NINE MONTHS ENDED SEPTEMBER 30
                           ------------------------------------------
                               1999 SALES             1998 SALES                $000'S              TONNES (000'S)
NET SALES                  -------------------    -------------------    --------------------    --------------------
                                       TONNES                 TONNES      INCREASE       %        INCREASE       %
                            $000'S     (000'S)     $000'S     (000'S)    (DECREASE)    CHANGE    (DECREASE)    CHANGE
                           --------    -------    --------    -------    ----------    ------    ----------    ------
<S>                        <C>         <C>        <C>         <C>        <C>           <C>       <C>           <C>
Ammonia..................  $147,995     1,462     $153,970     1,143     $  (5,975)      (4)         319         28
Urea.....................   133,404     1,201      156,513     1,085       (23,109)     (15)         116         11
Nitrogen solutions.......    83,816     1,245      124,942     1,601       (41,126)     (33)        (356)       (22)
Other nitrogen
  products...............    86,944     1,722      101,403     1,660       (14,459)     (14)          62          4
                           --------     -----     --------     -----     ---------      ---         ----        ---
                            452,159     5,630      536,828     5,489       (84,669)     (16)         141          3
Purchased products.......    29,696       282       45,358       386       (15,662)     (35)        (104)       (27)
                           --------     -----     --------     -----     ---------      ---         ----        ---
                           $481,855     5,912     $582,186     5,875     $(100,331)     (17)          37          1
                           ========     =====     ========     =====     =========      ===         ====        ===
North American...........  $446,431     5,169     $539,330     5,165     $ (92,899)     (17)           4         --
Offshore.................    35,424       743       42,856       710        (7,432)     (17)          33          5
                           --------     -----     --------     -----     ---------      ---         ----        ---
                           $481,855     5,912     $582,186     5,875     $(100,331)     (17)          37          1
                           ========     =====     ========     =====     =========      ===         ====        ===
</TABLE>

     For the first nine months of 1999, gross margin for nitrogen products was a
negative $27.7 million (1998 -- positive $60.6 million).

     Weak domestic demand combined with the continued absence of China from
offshore urea markets and reduced cash production costs for FSU producers due to
lower gas prices and currency weakness in the FSU countries continued to put
pressure on prices. Urea prices were down 23 percent and ammonia prices down 25
percent when compared to the first nine months of 1998. On an overall basis,
prices declined 18 percent as compared to the first nine months of 1998.

     North American sales volumes of manufactured products were up 2 percent on
an overall basis as compared to the first nine months of 1998. Sales volume
increases were as follows: urea 14 percent and ammonia 29 percent. The increased
sales volumes of ammonia were due to the new plant in Trinidad as these tonnes
replace product previously purchased by the Company (purchased ammonia sales
volumes decreased 26 percent in the same period), increased industrial demand
and strong US DAP exports. The increase in urea sales volumes was primarily due
to growth in the industrial market. Sales volumes for nitrogen solutions were
down 22 percent due to the combination of fewer acres planted to corn and more
to soybeans, low grain prices and early spring ammonia application. Sales
volumes of other nitrogen products were up 4 percent over the same period.

     Offshore sales volumes for manufactured products, on an overall basis, were
up 5 percent as compared to the first nine months of 1998. Offshore sales
volumes of urea declined 3 percent as compared to the first nine months of 1998
but this was more than offset by an increase of 16 percent in ammonia sales
volume.

     The Company continued to sell a large portion of its North American
nitrogen production to the more stable industrial market. Non-fertilizer
products represented 48 percent (1998 -- 45 percent) of nitrogen sales volumes
and 47 percent (1998 -- 43 percent) of net sales revenue.

     North American net sales revenue for the first nine months of 1999
accounted for 93 percent (1998 -- 93 percent) of the total nitrogen net sales
revenue.

                                       20
<PAGE>   21

COST OF GOODS SOLD

  Third Quarter

<TABLE>
<CAPTION>
                                                           THREE MONTHS
                                                              ENDED
                                                           SEPTEMBER 30
                                                          --------------     INCREASE       %
                                                          1999     1998     (DECREASE)    CHANGE
                                                          -----    -----    ----------    ------
<S>                                                       <C>      <C>      <C>           <C>
Potash production (KCl) tonnage (000's).................  1,069    1,259       (190)       (15)
Phosphate production (P(2)0(5)) tonnage (000's).........    481      585       (104)       (18)
Nitrogen production (N) tonnage (000's).................    650      781       (131)       (17)
</TABLE>

     Potash unit cost of sales increased 16 percent in the third quarter of 1999
compared to the same period in 1998 due primarily to lower production volumes,
increased sales of higher-cost New Brunswick product and 14.0 more shutdown
weeks.

     Overall, phosphate unit cost of sales increased by 2 percent compared to
third quarter 1998 primarily due to lower production volumes and disruptions in
rail service caused by hurricanes. These higher costs were partially offset by
reductions in the unit cost of ammonia and sulphur.

     PCS Nitrogen reduced its per unit natural gas cost by 4 percent compared to
1998 primarily due to its natural gas hedging policy in North America and
certain of its gas contracts in Trinidad. Overall, the per unit cost of sales of
manufactured product was flat as compared to the same period in 1998 as the
reduced gas costs were offset by higher per unit production costs due to plant
shutdowns and reduced production.

     Depreciation and amortization expense was $47.9 million compared to $48.2
million in the third quarter of 1998.

  Year to Date

<TABLE>
<CAPTION>
                                                           NINE MONTHS
                                                              ENDED
                                                           SEPTEMBER 30
                                                          --------------     INCREASE       %
                                                          1999     1998     (DECREASE)    CHANGE
                                                          -----    -----    ----------    ------
<S>                                                       <C>      <C>      <C>           <C>
Potash production (KCl) tonnage (000's).................  4,700    5,301       (601)       (11)
Phosphate production (P(2)0(5)) tonnage (000's).........  1,598    1,750       (152)        (9)
Nitrogen production (N) tonnage (000's).................  2,372    2,317         55          2
</TABLE>

     Potash unit cost of sales increased 12 percent in the first nine months of
1999 compared to the same period in 1998, due primarily to lower production
volumes, 33.9 more shutdown weeks, increased gas costs and product mix.

     Overall, phosphate unit cost of sales increased by 3 percent compared to
the first nine months of 1998 due primarily to lower production volumes and
disruptions in rail service caused by hurricanes. The unit cost of sulphur was
flat compared to the first nine months of 1998 while the unit cost of ammonia
decreased.

     PCS Nitrogen reduced its per unit natural gas cost by 8 percent compared to
1998 primarily due to its natural gas hedging policy in North America and
certain of its gas contracts in Trinidad. Overall, the per unit cost of sales of
manufactured product was flat as compared to the same period in 1998 as the
reduced gas costs were offset by higher per unit production costs due to plant
shutdowns and reduced production.

     Depreciation and amortization expense was $148.2 million compared to $145.8
million in the first nine months of 1998, an increase of $2.4 million.

                                       21
<PAGE>   22

SELLING AND ADMINISTRATIVE

  Third Quarter

     Selling and administrative expenses were $32.0 million in the third quarter
of 1999 compared to $28.2 million in the third quarter of 1998. The increase was
primarily due to a non-recurring adjustment to post-retirement benefits of $6.0
million which was partially offset by reductions of other expenses.

  Year to Date

     Selling and administrative expenses were $89.8 million compared to $86.5
million in the first nine months of 1998. The increase was primarily due to a
non-recurring adjustment to post-retirement benefits of $6.0 million which was
partially offset by reductions of other expenses.

PROVINCIAL MINING AND OTHER TAXES

     Saskatchewan's Potash Production Tax is comprised of a base tax per tonne
of product sold and an additional tax based on mine-by-mine profits. The New
Brunswick division and the Saskatchewan divisions pay a provincial Crown
royalty, which is accounted for in cost of goods sold.

  Third Quarter

     Saskatchewan provincial mining and other taxes in the third quarter of 1999
were $13.2 million compared to $23.5 million in 1998, a decrease of $10.3
million. Of this decrease, $9.1 million related to the Potash Production Tax
which decreased due to lower Saskatchewan-sourced sales in the third quarter of
1999 versus the comparable period in 1998, higher costs and lower Canadian
dollar equivalent prices caused in part by a stronger Canadian dollar.

     Saskatchewan corporate capital tax was $3.7 million, down from $4.9 million
in the third quarter of 1998. Various other payments to the Province in the form
of royalties and taxes totalled $3.2 million and are included in cost of goods
sold.

  Year to Date

     Saskatchewan provincial mining and other taxes in the first nine months of
1999 were $60.9 million compared to $68.3 million in 1998, a decrease of $7.4
million. Of this decrease, $7.0 million related to the Potash Production Tax
which decreased due to lower Saskatchewan-sourced sales in the first nine months
of 1999 versus the comparable period in 1998, higher costs and lower Canadian
dollar equivalent prices caused in part by a stronger Canadian dollar.

     Saskatchewan corporate capital tax was $15.0 million in the first nine
months of 1999 compared to $15.4 million in the first nine months of 1998.
Various other payments to the Province in the form of royalties and taxes
totalled $11.5 million and are included in cost of goods sold.

INTEREST EXPENSE

  Third Quarter

     Interest expense in the third quarter of 1999 was $13.0 million compared to
$15.8 million in the third quarter of 1998, a decrease of $2.8 million. The
decrease of $2.8 million consists of a reduction of interest on long-term debt
of $5.8 million due to a reduction of the weighted average long-term debt
outstanding from $875.2 million in the third quarter of 1998 to $482.6 million
in 1999 which was partially offset by an increase of $3.0 million in interest on
short-term debt (due to borrowings under a commercial paper program). The
weighted average interest rate on the long-term debt outstanding was 6.8 percent
in the third quarter of 1999 (1998 -- 6.4 percent).

                                       22
<PAGE>   23

  Year to Date

     Interest expense in the first nine months of 1999 was $40.1 million
compared to $52.9 million in 1998, a decrease of $12.8 million, due primarily to
a reduction of the weighted average long-term debt outstanding from $1.0 billion
in the first nine months of 1998 to $702.5 million in 1999. The weighted average
interest rate on the long-term debt outstanding was 6.4 percent in the first
nine months of 1999 (1998 -- 6.3 percent).

INCOME TAXES

     PCS and certain subsidiaries are subject to federal and provincial income
taxes in Canada. By virtue of deductions with respect to non-capital losses
carried forward, capital cost allowance, Canadian development expense and earned
depletion allowance, such taxes have not yet been payable. The Company expects
to begin paying cash income taxes in respect of 1999.

     The Company's subsidiaries which operate in the United States are subject
to US federal and state income taxes. By virtue of certain income tax deductions
available, these subsidiaries are not currently subject to regular federal cash
income tax. However, they are subject to the Alternative Minimum Tax, which may
be carried forward indefinitely as a credit to be applied against future regular
income tax liabilities.

     Certain of the Company's nitrogen subsidiaries which operate in Trinidad
are subject to Trinidad taxes.

  Third Quarter

     Income taxes for the quarter were a recovery of $40.6 million, compared to
an expense of $25.0 million in 1998, a decrease of $65.6 million. The decrease
was due principally to a deferred income tax recovery of $46.9 million relating
to the plant closures and impairment charge and lower income before income
taxes.

     The effective consolidated tax rate for the third quarter of 1999 was 30
percent (1998 -- 31 percent) of income before income taxes (exclusive of the
goodwill impairment).

  Year to Date

     Income taxes for the first nine months were $2.8 million, compared to $92.5
million in 1998, a decrease of $89.7 million. The decrease was due principally
to a deferred income tax recovery of $46.9 million relating to the plant
closures and impairment charge and lower income before income taxes.

     The effective consolidated tax rate for the first nine months of 1999 was
30 percent (1998 -- 31 percent) of income before income taxes (exclusive of the
goodwill impairment).

ANALYSIS OF FINANCIAL CONDITION AND CASH FLOW

     Cash provided by operating activities in the first nine months of 1999 was
$327.2 million (1998 -- $460.9 million). The decrease of $133.7 million was
primarily due to a reduction of net income and a reduction of the non-cash
expenses charged against operating income (primarily deferred income taxes in
the amount of $87.0 million).

     Cash used in investing activities was $128.3 million (1998 -- $91.7
million). The increase of $36.6 million was primarily due to the acquisition of
PCS Yumbes for $36.9 million and an increase in additions to other assets of
$23.7 million. These increases were partially offset by a reduction in additions
to property, plant and equipment of $24.2 million.

     Cash used in financing activities was $243.5 million (1998 -- $342.3
million), primarily to repay long-term debt and to pay dividends. The Company
paid dividends of $13.3 million in the third quarter of 1999 (1998 -- $13.4
million).

     The Company has renewed a syndicated credit facility which provides for
unsecured advances of up to $778.0 million, none of which was outstanding at
September 30, 1999. The Company has substituted borrowings under a commercial
paper program for drawdowns under the syndicated credit facility in order to
reduce interest costs. Short-term debt outstanding at September 30, 1999 was
$379.1 million. The Company
                                       23
<PAGE>   24

may also issue up to an additional $600.0 million in unsecured debt securities
under its existing shelf registration statement. At September 30, 1999 the
Company's debt-to-capital ratio was 29.3 percent compared to 23.5 percent at
June 30, 1999. This increase was primarily due to a reduction in shareholders'
equity as a result of the provisions for plant closures and asset impairment.

     The Company believes that internally generated cash flow, supplemented as
necessary by borrowings from existing financing sources, will be sufficient to
meet the Company's anticipated capital expenditures and other cash requirements,
exclusive of any possible acquisitions, in the remainder of 1999.

YEAR 2000 READINESS DISCLOSURE

     The year 2000 poses a risk that computer systems, or devices containing
microchips, will generate erroneous results if the year 2000 is stored as 00.
The Year 2000 problem, if not remedied, could result in a system failure or
miscalculations causing what are expected to be temporary disruptions of
operations, including, among other things, an inability to process transactions,
send invoices or engage in similar normal business activities. The Company
defines year 2000 compliance as computer systems or devices which will function
accurately before, on, and after January 1, 2000 without business or operational
interruptions, or repercussions, due to any date-related functions.

     PCS considers the Company's internal systems to be year 2000 compliant in
all material respects. Both its information systems and operational systems
which include mine, mill or plant control systems, have been evaluated and are
now believed to be ready for the year 2000. The Company's review of the year
2000 issue included personal computers, third party electronic links, building
facilities, and critical external parties. The Company has a Year 2000 committee
composed of executive and senior management which directed the compliance
process. The committee will continue to monitor and manage the year 2000 issue
into the new millennium.

     The Company has formally communicated with critical customers, suppliers
and other external parties to determine the extent to which the Company may be
vulnerable to such parties' failure to resolve their Year 2000 issues. The
assessments of these external parties have not identified any matters that are
expected to materially affect the Company. However, the effect, if any, on the
Company's results of operations or financial condition from the failure of these
entities to be Year 2000 ready is uncertain.

     The Company has not identified the need for, nor has it created, Year 2000
specific contingency plans as it believes that its existing risk management
systems are adequate to address any Year 2000 related situations that may arise.
The Company has not planned any mine or plant shutdowns for January 1, 2000 due
to the Year 2000 issue. The Company continues to monitor third parties on an
ongoing basis.

     At this time, the Company believes its most reasonably likely worst case
scenario is that there may be temporary disruptions of power and/or gas
transmission to some of its plants and/or that there may be temporary
disruptions of some transportation services. In either case, the Company does
not believe that these disruptions would have a material adverse effect on its
results of operations or financial condition. This is because the Company has
multiple production, storage and shipping locations. This is also due to the
fact that inventory levels would be building in anticipation of the spring
fertilizer season; fertilizer sales are seasonally low at the beginning of the
year and the disruptions, if any, would be expected to be temporary.

     The Company has primarily utilized internal resources to identify, upgrade
and test its systems for Year 2000 compliance. This has not deferred any other
material projects. To date, the Company has spent $1.7 million on compliance;
the Company does not anticipate that the continuing monitoring functions noted
above will result in any additional material expenditures. The Company's
compliance expenditures were financed from internally generated cash flows.

                                       24
<PAGE>   25

OUTLOOK

     The rising world population and the demand for more food and better diets,
with meat as a protein source, will continue to drive consumption of fertilizers
over the long term. While the consumption trend line is expected to continue to
climb over the long term, there will be, at times, fluctuations in demand.

     North American fertilizer demand is generally considered mature but is
expected to fluctuate from year to year, as a function of acres planted and
application rates per acre which are influenced by crop prices and weather.

     While world grain stocks are not excessive North American stocks are up
after three consecutive years of good harvests. This has resulted in the lowest
corn prices in a decade. Historically, fertilizer prices track the US corn price
fairly closely. In potash, prices have been more stable than the US corn price
as supply has generally tracked demand. In phosphate, DAP prices appear to more
closely parallel US corn prices than potash. Nitrogen prices appear to track the
US corn price very closely. If there should be weather problems, US grain
inventories could quickly be diminished. In addition, when grain becomes as
inexpensive as it is now farmers use more of it for feed.

     The Company sells a significant amount of potash and phosphate in the
offshore markets. These countries purchase fertilizer to grow cash crops for
export and to grow food for internal use.

     The Company also sells product in the non-fertilizer markets which are
affected by North American economic growth, which is expected to rise by more
than three percent next year. Outside consultants forecast four percent annual
growth in demand for industrial nitrogen products for the next five years and
two percent growth for industrial phosphates.

     The effect of any increase in demand for fertilizer and non-fertilizer
products will be offset to the degree that additional capacity comes on stream.
While North American fertilizer demand was down in all three nutrients in the
fertilizer year ended June 30, 1999, the Company expects the spring season of
2000 to be the first good prospect for increased consumption in North America.

     Domestic potash sales volumes in the fourth quarter of 1999 are expected to
be flat as compared to fourth quarter 1998, while competitive pressures make
prices difficult to predict. On October 27, 1999 the Company announced a US
$3.00 per short ton price increase for domestic customers effective November 1,
1999. In the offshore market, prices are expected to remain firm but Company
realizations are expected to be down as compared to fourth quarter 1998 due to
product and customer mix, while volumes are expected to increase from 1998
levels due to sales to China. Potash inventories for the industry are only
slightly above the five year average which should help mitigate pricing
pressures. Overall, potash volumes are expected to be generally up as compared
to fourth quarter 1998.

     PCS continues to operate its potash mines by matching production to
anticipated sales demand. Shutdowns at potash mines for inventory correction
will influence potash production costs on a quarter-over-quarter comparative
basis. The Company is currently planning approximately 50 percent more shutdown
weeks in the fourth quarter of 1999 as compared to the same period in 1998,
which is expected to adversely impact fourth quarter production costs.

     Higher sales volumes at lower sales prices and higher production costs are
expected to result in a lower gross margin for potash than in the fourth quarter
of 1998.

     Large North American inventories of DAP and the anticipation of new
capacity coming on stream is expected to put continued pressure on solid
phosphate prices. Prices for liquid phosphates are expected to increase slightly
compared to third quarter 1999. Sales volumes for phosphate products on an
overall basis are expected to decline as compared to the fourth quarter of 1998.
Feed supplement product prices are expected to be flat as compared to fourth
quarter 1998 while sales volumes decline. Industrial product prices are expected
to increase while sales volumes decline.

     The decrease in ammonia prices is expected to favourably affect phosphate
processing input costs on a year-over-year basis. PCS can use up to one-quarter
of the ammonia it produces and sells as ammonia at its

                                       25
<PAGE>   26

own phosphate plants. However, as compared to fourth quarter 1998 it is expected
that there will be higher per unit costs due to lower production volumes. These
increased costs, combined with lower prices, are expected to result in a
significantly lower gross margin for phosphate products as compared to the
fourth quarter of 1998.

     Due to industry rationalization and reduced inventories, markets for the
company's nitrogen products have started to respond. This could lead to prices
being above third quarter 1999 levels but prices are still expected to be below
prices realized in the fourth quarter of 1998. Recent increases in the price of
natural gas could stimulate further plant shutdowns in the industry which may
further solidify prices. The Company is currently in discussions for renewal of
its gas contracts for the 01 and 02 ammonia plants in Trinidad. Firming prices
and anticipated flat costs are expected to result in a negative fourth quarter
gross margin for nitrogen products that is improved over third quarter 1999.

     The Company manages its natural gas costs through a combination of fixed
price contracts, hedges and the Trinidad gas contracts. In the fourth quarter,
these costs are expected to remain comparable to fourth quarter 1998 levels as
the Company remains over 90 percent hedged for natural gas in the US. As a
flexible producer, PCS will continue to allocate its nitrogen and phosphate feed
stock to production of the products that will most benefit results.

     The total consolidated income tax provision in 2000 is expected to
approximate the 1999 provision. However, the Company expects that it will fully
utilize its Canadian non-capital losses carried forward in 1999. As a result,
current income taxes in 2000 are likely to increase as a percentage of the total
income tax provision, dependent upon sources of income.

     The Company has decided to proceed with a consolidation of its US
administrative offices. Certain non-recurring charges for severance, relocation,
lease termination and other associated charges may be incurred in the fourth
quarter subject to finalization of the plan. These non-recurring charges cannot
be estimated at the present time.

     Current business conditions, which continue to fluctuate, suggest that 1999
fourth quarter earnings for the Company (exclusive of any possible non-recurring
charges) should be in the range of one fifth of fourth quarter 1998 earnings.

FORWARD LOOKING STATEMENTS

     Certain statements in this quarterly report on Form 10-Q, including
statements in this Management's Discussion and Analysis of Financial Condition
and Results of Operations, relating to the period after September 30, 1999, are
forward-looking statements subject to significant uncertainties. A number of
factors could cause actual results to differ materially from those expressed in
the forward looking statements, including, but not limited to, fluctuation in
supply and demand in fertilizer, sulphur and petrochemical markets; changes in
competitive pressures, including pricing pressures; potential higher costs
incurred in connection with restructuring charges as compared to costs estimated
for purposes of calculating such charges; uncertainty and variations in future
discounted and undiscounted net cash flows from use together with residual
values estimated for purposes of calculating asset impairment; changes in
capital markets; changes in currency and exchange rates; unexpected geological
or environmental conditions; imprecision in reserve estimates; the outcome of
legal proceedings; and changes in government policy. The Company sells to a
diverse group of customers both by geography and by end product. Market
conditions will vary on a year-over-year basis and sales can be expected to
shift from one period to another.

                                       26
<PAGE>   27

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

     The Company's nitrogen operations are significantly affected by the price
of natural gas. The Company employs derivative commodity instruments related to
a portion of its natural gas requirements (primarily futures, swaps and options)
for the purpose of managing its exposure to commodity price risk in the purchase
of natural gas. Changes in the market value of these derivative instruments have
a high correlation to changes in the spot price of natural gas. Gains or losses
arising from settled hedging transactions are deferred as a component of
inventory until the product containing the hedged item is sold. Changes in the
market value of open hedging transactions are not recognized as they generally
relate to changes in the spot price of anticipated natural gas purchases.

     A sensitivity analysis has been prepared to estimate the Company's market
risk exposure arising from derivative commodity instruments. The fair value of
such instruments is calculated by valuing each position using quoted market
prices. Market risk is estimated as the potential loss in fair value resulting
from a hypothetical 10 percent adverse change in such prices. The results of
this analysis indicate that as of September 30, 1999, the Company's estimated
derivative commodity instruments market risk exposure was $31.6 million
(1998 -- $38.2 million). Actual results may differ from this estimate. Changes
in the fair value of such derivative instruments, with maturities in 1999
through 2004, will generally relate to changes in the spot price of anticipated
natural gas purchases.

     The Company also enters into forward exchange contracts for the sole
purpose of limiting its exposure to exchange rate fluctuations relating to
certain trade accounts. Gains or losses resulting from foreign exchange
contracts are recognized at the time that the contracts are entered into and are
included in Other Income.

                                       27
<PAGE>   28

PART II.  OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

CIVIL ANTITRUST COMPLAINTS

     In June 1993, PCS and PCS Sales (Canada) Inc. ("PCS Sales (Canada)") were
served with a complaint relating to a suit filed in the United States District
Court for Minnesota against most North American potash producers, including the
Company. The complaint alleged a conspiracy among the defendants to fix the
price of potash purchased by the plaintiffs as well as potash purchased by the
members of a class of certain purchasers proposed by the plaintiffs. Similar
complaints were filed in the United States District Courts for the Northern
District of Illinois and the Western District of Virginia. On motion of the
defendants, all of the complaints were transferred and consolidated for
pre-trial purposes in the United States District Court for Minnesota. Amended
complaints were filed in March and April 1994. On January 12, 1995, the
Minnesota Federal Court granted the plaintiffs' motion for class certification.
The complaint sought treble damages in an unspecified amount and other relief.
PCS and PCS Sales filed a motion for summary judgment on December 22, 1995. On
January 2, 1997, Judge Richard H. Kyle issued an order granting the defendants'
motions for summary judgment and dismissing the lawsuit. The plaintiffs appealed
that order to the United States Court of Appeals for the Eighth Circuit on
January 31, 1997. On May 7, 1999, the Eighth Circuit, in a two to one decision,
issued an opinion reversing Judge Kyle's summary judgment decision in favor of
the Company as well as several of the other defendants. On July 16, 1999, the
Eighth Circuit granted defendants' petition for rehearing en banc and vacated
the May 7, 1999 opinion of the three judge panel. Oral argument before the
Eighth Circuit en banc occurred on September 13, 1999.

     Additional complaints were filed in the California and Illinois state
courts on behalf of purported classes of indirect purchasers of potash in those
states. PCS moved to dismiss the California State Court lawsuits for lack of
personal jurisdiction and the court ruled that it does not have personal
jurisdiction over PCS but that it does have personal jurisdiction over PCS
Sales. Following Judge Kyle's summary judgment decision, the California
litigation was stayed and the case remains at an early stage: no merits
discovery has taken place. The Illinois State Court complaint was dismissed for
failure to state a cause of action and that decision is final and not subject to
appeal.

     Insofar as the allegations of wrongdoing in the litigation relate to the
Company, management of the Company, having consulted with legal counsel,
believes that the allegations are without merit, that the Company has valid
legal defenses and that the lawsuit will not have a material adverse effect on
the Company. However, management of the Company cannot predict with certainty
the outcome of the litigation.

FORMER ARCADIAN EXECUTIVE PROCEEDINGS

     On May 7, 1997, J. Douglas Campbell, Alfred L. Williams, Peter H. Kesser,
and David Alyea, former officers of Arcadian, filed lawsuits against the Company
in the United States District Court for the Western District of Tennessee. The
complaints allege that the Company breached employment agreements between
Arcadian and the officers and breached the related assumption agreement among
the Company, PCS Nitrogen, and Arcadian. In addition, Mr. Alyea's complaint
names Charles Childers, John Gugulyn, and John Hampton as additional defendants
and alleges that the defendants interfered with and conspired to interfere with
his employment agreement, and did not accurately state their intentions in
entering into the assumption agreement. The complaints of Mr. Campbell, Mr.
Williams, Mr. Kesser, and Mr. Alyea seek damages in excess of $22.2 million,
$6.2 million, $3.7 million, and $4.2 million, respectively. In addition, on
October 14, 1997, Charles Lance, a former officer of Arcadian Corporation, filed
a lawsuit in the same court against the Company also alleging breaches of his
employment agreement and the related assumption agreement. Mr. Lance seeks
damages in an amount exceeding $3.0 million. Each complaint also seeks certain
additional unspecified damages. On August 11, 1998, the Court ruled that the
Company had assumed the obligations of the employment agreements and that
equitable claims and defenses asserted against the executives for breaches of
fiduciary duties, corporate waste, and self-dealing should be asserted by PCS
Nitrogen in the state court action described below. Trial with respect to the
claims of Mr. Campbell,

                                       28
<PAGE>   29

Mr. Williams and Mr. Kesser commenced on August 17, 1998 and concluded on August
25, 1998. On December 1, 1998 the court entered judgments in the amounts of
$12.7 million, $3.2 million, and $2.6 million in favor of Mr. Campbell, Mr.
Williams and Mr. Kesser, subject to additional amounts sufficient to offset the
impact of certain excise taxes, if applicable. The Company has filed Notices of
Appeal with respect to these judgments. The Company has settled the claim of Mr.
Alyea for $700,000 and $50,000 of attorneys' fees (subject to the application
for additional fees) and the claim of Mr. Lance for a total amount of $600,000.
The District Court, on August 13, 1999, awarded plaintiffs a total of
$2,410,254.66 for legal expenses.

     On September 15, 1997, the Company and PCS Nitrogen filed an action in the
Circuit Court of Tennessee for the Thirtieth Judicial District at Memphis
against J. Douglas Campbell, Peter H. Kesser, Alfred L. Williams, Charles W.
Lance, Jr., and David L. Alyea, for declaratory relief and damages. The Company
and PCS Nitrogen alleged that the defendants, all former executives of Arcadian,
committed breaches of their fiduciary duties in the negotiation of, obtaining
approval for, and execution of the employment agreements each of them had with
Arcadian. In addition, the Company and PCS Nitrogen also sought a declaratory
judgment with respect to the unenforceability of the employment agreements. On
October 14, 1997, the defendants removed this action from the Circuit Court of
Tennessee to the United States District Court for the Western District of
Tennessee. On October 21, 1997, the five defendants filed counterclaims: (i)
under the Employee Retirement Income Security Act of 1974, as amended (ERISA),
against PCS Nitrogen, (ii) alleging that the Company and PCS Nitrogen unlawfully
interfered with their attainment of benefits under their employment agreements,
and (iii) incorporating by reference all claims asserted in their individually
filed complaints. The damages sought by the defendants in these counterclaims
appear substantially equivalent to the damages sought in their individually
filed suits as plaintiffs. On July 20, 1998 the federal court dismissed all of
the former executives' claims under ERISA and remanded the case to state court,
where it remains pending. Pursuant to the settlements with Mr. Alyea and Mr.
Lance, the claims and counterclaims as they concern these individuals have been
non-suited.

     Management of the Company, having consulted with legal counsel, believes
that the lawsuits will not have a material adverse effect on the Company's
financial condition or results of operations.

PORT AUTHORITY PROCEEDINGS

     On March 13, 1996, PCS Nitrogen, two other nitrogen producers, and up to 30
unidentified parties were named as defendants in a lawsuit filed in the name of
the Port Authority of New York and New Jersey (the "Port Authority") in New
Jersey state court. The lawsuit was actually filed by attorneys hired by the
Port Authority's subrogated insurance carriers. The Port Authority's insurers
were seeking to recover damages allegedly incurred as a result of the explosion
at the World Trade Center in New York City on February 26, 1993. The lawsuit was
removed to federal court in New Jersey. On December 19, 1997, the complaint was
dismissed with prejudice.

     On August 18, 1999, the United States Court of Appeals for the Third
Circuit affirmed the dismissal. The deadline for any further appeal by the Port
Authority has passed, so the matter has been finally concluded in favor of PCS
Nitrogen.

GEISMAR FACILITY INVESTIGATION

     On May 11, 1999, execution of a search warrant issued by the United States
District Court for the Middle District of Louisiana in connection with an
investigation of environmental matters was commenced at the Geismar, Louisiana
facility of PCS Nitrogen Fertilizer, L.P., a partnership of certain subsidiaries
of PCS Nitrogen, Inc. ("PCS Nitrogen"). The execution of the warrant was
concluded on May 12, 1999. Also on May 11, 1999, subpoenas issued by the same
court in connection with a grand jury proceeding relating to the investigation
were served at the Geismar facility and on PCS Nitrogen at its offices in
Memphis, Tennessee. The investigation is on-going and the Company is in the
process of complying with the subpoenas.

                                       29
<PAGE>   30

LAKELAND, FLORIDA PROCEEDING

     On October 13, 1999, PCS Joint Venture submitted to the United States
Environmental Protection Agency Phase I of a work plan to conduct a Remedial
Investigation and Feasibility Study ("RI/FS") of certain releases to the soil
and groundwater of the PCS Joint Venture facility in Lakeland, Florida and other
area properties (the "Landia Site"). PCS Joint Venture is negotiating with EPA
regarding the terms of an Administrative Order by Consent under which PCS Joint
Venture would agree to conduct the RI/FS work. These soil and groundwater
releases have also been the subject of an investigation by the Florida
Department of Environmental Protection ("FDEP") and the subject of a Complaint
filed by FDEP against PCS Joint Venture and a number of other defendants in
1997. Discovery is still continuing in that proceeding. On September 23, 1999,
an action was served on PCS Joint Venture and eight other defendants on behalf
of a class of persons living in the vicinity of the site who claim to have
suffered damages as a result of releases from the Landia Site. PCS Joint Venture
intends to defend itself vigorously in both actions, while also continuing to
work to assess and evaluate the nature and extent of the impacts at the site. No
final determination has yet been made of the nature, timing, or cost of remedial
action that may be needed, and PCS Joint Venture is unable at present to
determine whether and to what extent it may be able to recover any costs
incurred from third parties.

                                       30
<PAGE>   31

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

  (a) EXHIBITS

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                      DESCRIPTION OF DOCUMENT
- -------                     -----------------------
<S>       <C>
 2        Agreement and Plan of Merger dated September 2, 1996, as
          amended, by and among the registrant, Arcadian Corporation
          and PCS Nitrogen, Inc., incorporated by reference to Exhibit
          2(a) to Amendment Number 2 to the registrant's Form S-4
          (File No. 333-17841).
 3(a)     Restated Articles of Incorporation of the registrant dated
          October 31, 1989, as amended May 11, 1995, incorporated by
          reference to Exhibit 3(i) to the registrant's report on Form
          10-K for the year ended December 31, 1995 (the "1995 Form
          10-K").
 3(b)     Bylaws of the registrant dated March 2, 1995, incorporated
          by reference to Exhibit 3(ii) to the 1995 Form 10-K.
 4(a)     Term Credit Agreement between The Bank of Nova Scotia and
          other financial institutions and the registrant dated
          October 4, 1996, incorporated by reference to Exhibit 4(b)
          to the registrant's Form S-4 (File No. 333-17841).
 4(b)     First Amending Agreement to Term Credit Agreement between
          The Bank of Nova Scotia and other financial institutions and
          the registrant dated November 6, 1997, incorporated by
          reference to Exhibit 4(b) to the registrant's report on Form
          10-K for the year ended December 31, 1997 (the "1997 Form
          10-K").
 4(c)     Second Amending Agreement to Term Credit Agreement between
          The Bank of Nova Scotia and other financial institutions and
          the registrant dated December 15, 1997, incorporated by
          reference to Exhibit 4(c) to the 1997 Form 10-K.
 4(d)     Third Amending Agreement to Term Credit Agreement between
          The Bank of Nova Scotia and other financial institutions and
          the registrant dated October 2, 1998, incorporated by
          reference to Exhibit 4(d) to the registrant's report on Form
          10-Q for the quarterly period ended September 30, 1998.
 4(e)     Fourth Amending Agreement to Term Credit Agreement between
          The Bank of Nova Scotia and other financial institutions and
          the registrant dated September 30, 1999.
 4(f)     Indenture dated as of June 16, 1997, between the registrant
          and The Bank of Nova Scotia Trust Company of New York,
          incorporated by reference to Exhibit 4(a) to the
          registrant's report on Form 8-K dated June 18, 1997.
</TABLE>

     The registrant hereby undertakes to file with the Securities and Exchange
Commission, upon request, copies of any constituent instruments defining the
rights of holders of long-term debt of the registrant or its subsidiaries that
have not been filed herewith because the amounts represented thereby are less
than 10% of the total assets of the registrant and its subsidiaries on a
consolidated basis.

<TABLE>
<CAPTION>

<S>       <C>
10(a)     Suspension Agreement concerning Potassium Chloride from
          Canada dated January 7, 1988, among U.S. Department of
          Commerce, the registrant, International Minerals and
          Chemical (Canada) Limited, Noranda, Inc. (Central Canada
          Potash Co.), Potash Company of America, a Division of Rio
          Algom Limited, S & P Canada, II (Kalium Chemicals), Cominco
          Ltd., Potash Company of Canada Limited, Agent for
          Denison-Potacan Potash Co. and Saskterra Fertilizers Ltd.,
          incorporated by reference to Exhibit 10(a) to the
          registrant's registration statement on Form F-1 (File No.
          33-31303) (the "F-1 Registration Statement").
10(b)     Sixth Voting Agreement dated April 22, 1978, between Central
          Canada Potash, Division of Noranda, Inc., Cominco Ltd.,
          International Minerals and Chemical Corporation (Canada)
          Limited, PCS Sales and Texasgulf Inc., incorporated by
          reference to Exhibit 10(f) to the F-1 Registration
          Statement.
</TABLE>

                                       31
<PAGE>   32

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                      DESCRIPTION OF DOCUMENT
- -------                     -----------------------
<S>       <C>
10(c)     Canpotex Limited Shareholders Seventh Memorandum of
          Agreement effective April 21, 1978, between Central Canada
          Potash, Division of Noranda Inc., Cominco Ltd.,
          International Minerals and Chemical Corporation (Canada)
          Limited, PCS Sales, Texasgulf Inc. and Canpotex Limited as
          amended by Canpotex S & P amending agreement dated November
          4, 1987, incorporated by reference to Exhibit 10(g) to the
          F-1 Registration Statement.
10(d)     Producer Agreement dated April 21, 1978, between Canpotex
          Limited and PCS Sales, incorporated by reference to Exhibit
          10(h) to the F-1 Registration Statement.
10(e)     Agreement of Limited Partnership of Arcadian Fertilizer,
          L.P. dated as of March 3, 1992 (form), and the related
          Certificate of Limited Partnership of Arcadian Fertilizer,
          L.P., filed with the Secretary of State of the State of
          Delaware on March 3, 1992 (incorporated by reference to
          Exhibits 3.1 and 3.2 to Arcadian Partners L.P.'s
          Registration Statement on Form S-1 (File No. 33-45828)).
10(f)     Amendment to Agreement of Limited Partnership of Arcadian
          Fertilizer, L.P. and related Certificate of Limited
          Partnership of Arcadian Fertilizer, L.P. filed with the
          Secretary of State of the State of Delaware on March 6, 1997
          and November 26, 1997, incorporated by reference to Exhibit
          10(f) to the registrant's report on Form 10-K for the year
          ended December 31, 1998 (the "1998 Form 10-K").
10(g)     Geismar Complex Services Agreement dated June 4, 1984,
          between Allied Corporation and Arcadian Corporation,
          incorporated by reference to Exhibit 10.4 to Arcadian
          Corporation's Registration Statement on Form S-1 (File No.
          33-34357).
10(h)     Canpotex/PCS Amending Agreement, dated with effect October
          1, 1992, incorporated by reference to Exhibit 10(f) to the
          1995 Form 10-K.
10(i)     Canpotex PCA Collateral Withdrawing/PCS Amending Agreement,
          dated with effect October 7, 1993, incorporated by reference
          to Exhibit 10(g) to the 1995 Form 10-K.
10(j)     Esterhazy Restated Mining and Processing Agreement dated
          January 31, 1978, between International Minerals and
          Chemical Corporation (Canada) Limited and the registrant's
          predecessor, incorporated by reference to Exhibit 10(e) to
          the F-1 Registration Statement.
10(k)     Agreement dated December 21, 1990, between International
          Minerals & Chemical Corporation (Canada) Limited and the
          registrant, amending the Esterhazy Restated Mining and
          Processing Agreement dated January 31, 1978, incorporated by
          reference to Exhibit 10(p) to the registrant's report on
          Form 10-K for the year ended December 31, 1990.
10(l)     Agreement effective August 27, 1998, between International
          Minerals & Chemical (Canada) Global Limited and the
          registrant, amending the Esterhazy Restated Mining and
          Processing Agreement dated January 31, 1978 (as amended),
          incorporated by reference to Exhibit 10(l) to the 1998 Form
          10-K.
10(m)     Agreement effective August 31, 1998, among International
          Minerals & Chemical (Canada) Global Limited, International
          Minerals & Chemical (Canada) Limited Partnership and the
          registrant assigning the interest in the Esterhazy Restated
          Mining and Processing Agreement dated January 31, 1978 (as
          amended) held by International Minerals & Chemical (Canada)
          Global Limited to International Minerals & Chemical (Canada)
          Limited Partnership, incorporated by reference to Exhibit
          10(m) to the 1998 Form 10-K.
10(n)     Operating Agreement dated May 11, 1993, between BP Chemicals
          Inc. and Arcadian Ohio, L.P., as amended by the First
          Amendment to the Operating Agreement dated as of November
          20, 1995, between BP Chemicals Inc. and Arcadian Ohio, L.P.
          ("First Amendment"), incorporated by reference to Exhibit
          10.2 to Arcadian Partners L.P.'s current report on Form 8-K
          for the report event dated May 11, 1993, except for the
          First Amendment which is incorporated by reference to
          Arcadian Corporation's report on Form 10-K for the year
          ended December 31, 1995.
</TABLE>

                                       32
<PAGE>   33

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                      DESCRIPTION OF DOCUMENT
- -------                     -----------------------
<S>       <C>
10(o)     Second Amendment to Operating Agreement between BP
          Chemicals, Inc. and Arcadian Ohio, L.P., dated as of
          November 25, 1996, incorporated by reference to Exhibit
          10(k) to the 1997 Form 10-K.
10(p)     Manufacturing Support Agreement dated May 11, 1993, between
          BP Chemicals Inc. and Arcadian Ohio, L.P., incorporated by
          reference to Exhibit 10.3 to Arcadian Partners L.P.'s
          current report on Form 8-K for the report event dated May
          11, 1993.
10(q)     First Amendment to Manufacturing Support Agreement between
          BP Chemicals, Inc. and Arcadian Ohio, L.P., dated as of
          November 25, 1996, incorporated by reference to Exhibit
          10(l) to the 1997 Form 10-K.
10(r)     Amended and Restated Agreement for Lease dated as of May 16,
          1997, between Trinidad Ammonia Company, Limited Partnership,
          and PCS Nitrogen Fertilizer, L.P., incorporated by reference
          to Exhibit 10(n) to the registrant's report on Form 10-Q for
          the quarterly period ended June 30, 1997 (the "Second
          Quarter 1997 Form 10-Q").
10(s)     Amended and Restated Lease Agreement dated as of May 16,
          1997, between Trinidad Ammonia Company, Limited Partnership,
          and PCS Nitrogen Fertilizer, L.P., incorporated by reference
          to Exhibit 10(o) to the Second Quarter 1997 Form 10-Q.
10(t)     Amended and Restated Agreement for Lease dated as of May 16,
          1997, between Nitrogen Leasing Company, Limited Partnership,
          and PCS Nitrogen Fertilizer, L.P., incorporated by reference
          to Exhibit 10(p) to the Second Quarter 1997 Form 10-Q.
10(u)     Amended and Restated Lease Agreement dated as of May 16,
          1997, between Nitrogen Leasing Company, Limited Partnership,
          and PCS Nitrogen Fertilizer, L.P., incorporated by reference
          to Exhibit 10(q) to the Second Quarter 1997 Form 10-Q.
10(v)     Amended and Restated Purchase Option Agreement dated as of
          May 16, 1997, between Nitrogen Leasing Company, Limited
          Partnership, and PCS Nitrogen Fertilizer Operations, Inc.,
          incorporated by reference to Exhibit 10(r) to the Second
          Quarter 1997 Form 10-Q.
10(w)     Amended and Restated Purchase Option Agreement dated as of
          May 16, 1997, between Trinidad Ammonia Company, Limited
          Partnership and PCS Nitrogen Fertilizer Operations, Inc.,
          incorporated by reference to Exhibit 10(s) to the Second
          Quarter 1997 Form 10-Q.
10(x)     Agreement dated January 1, 1997 between the registrant and
          Charles E. Childers, incorporated by reference to Exhibit
          10(s) to the 1997 Form 10-K.
10(y)     Potash Corporation of Saskatchewan Inc. Stock Option
          Plan -- Directors, as amended November 3, 1999.
10(z)     Potash Corporation of Saskatchewan Inc. Stock Option
          Plan -- Officers and Key Employees, as amended November 3,
          1999.
10(aa)    Short-Term Incentive Plan of the registrant, as amended May
          7, 1997, incorporated by reference to Exhibit 10(w) to the
          Second Quarter 1997 Form 10-Q.
10(bb)    Long-Term Incentive Plan of the registrant, as amended May
          7, 1997, incorporated by reference to Exhibit 10(x) to the
          Second Quarter 1997 Form 10-Q.
10(cc)    Resolution and Forms of Agreement for Supplemental
          Retirement Income Plan, for officers and key employees of
          the registrant, incorporated by reference to Exhibit 10(o)
          to the 1995 Form 10-K.
10(dd)    Forms of Agreement dated December 30, 1994, between the
          registrant and certain officers of the registrant,
          concerning a change in control of the registrant,
          incorporated by reference to Exhibit 10(p) to the 1995 Form
          10-K.
10(ee)    Form of Agreement of Indemnification dated August 8, 1995,
          between the registrant and certain officers and directors of
          the registrant, incorporated by reference to Exhibit 10(q)
          to the 1995 Form 10-K.
</TABLE>

                                       33
<PAGE>   34

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                      DESCRIPTION OF DOCUMENT
- -------                     -----------------------
<S>       <C>
10(ff)    Deferred Compensation Plan, for certain officers of PCS
          Phosphate Company, Inc., incorporated by reference to
          Exhibit 10(r) to the 1995 Form 10-K.
10(gg)    Supplemental Retirement Benefits Plan, for eligible
          employees of PCS Phosphate Company, Inc., incorporated by
          reference to Exhibit 10(s) to the 1995 Form 10-K.
10(hh)    Second Amended and Restated Membership Agreement dated
          January 1, 1995, among Phosphate Chemicals Export
          Association, Inc. and members of such association, including
          Texasgulf Inc., incorporated by reference to Exhibit 10(t)
          to the 1995 Form 10-K.
10(ii)    International Agency Agreement dated January 1, 1995,
          between Phosphate Chemicals Export Association, Inc. and
          Texasgulf Inc. establishing Texasgulf Inc. as exclusive
          marketing agent for such association's wet phosphatic
          materials, incorporated by reference to Exhibit 10(u) to the
          1995 Form 10-K.
10(jj)    General Partnership Agreement forming Albright & Wilson
          Company, dated July 29, 1988 and amended January 31, 1995,
          between Texasgulf Inc. and Albright & Wilson Americas, Inc.,
          incorporated by reference to Exhibit 10(v) to the 1995 Form
          10-K.
10(kk)    Royalty Agreement dated October 7, 1993, by and between the
          registrant and Rio Algom Limited, incorporated by reference
          to Exhibit 10(x) to the 1995 Form 10-K.
10(ll)    Amending Resolution and revised forms of agreement regarding
          Supplemental Retirement Income Plan of the registrant,
          incorporated by reference to Exhibit 10(x) to the
          registrant's report on Form 10-Q for the quarterly period
          ended June 30, 1996.
10(mm)    Shareholder Rights Agreement as amended and restated on
          March 2, 1998, incorporated by reference to Schedule B to
          the registrant's proxy circular for the annual and special
          meeting of shareholders held on May 7, 1998.
11        Statement re Computation of Per Share Earnings.
27        Financial Data Schedule.
</TABLE>

  (b) REPORTS ON FORM 8-K

     On October 22, 1999, the registrant filed a report on Form 8-K regarding a
press release issued on October 21, 1999 announcing certain one-time corporate
charges.

                                       34
<PAGE>   35

                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.

                                          POTASH CORPORATION OF
                                          SASKATCHEWAN INC.

November 10, 1999
                                          By:     /s/ JOHN L.M. HAMPTON
                                            ------------------------------------
                                            John L.M. Hampton
                                              Senior Vice President, General
                                              Counsel and Secretary

November 10, 1999
                                          By:     /s/ WAYNE R. BROWNLEE
                                            ------------------------------------
                                            Wayne R. Brownlee
                                              Senior Vice President, Finance and
                                              Treasurer, and Chief Financial
                                              Officer
                                            (Principal Financial and Accounting
                                              Officer)

                                       35
<PAGE>   36

<TABLE>
<CAPTION>
EXHIBIT                                                                  PAGE
NUMBER                      DESCRIPTION OF DOCUMENT                     NUMBER
- -------                     -----------------------                     ------
<S>       <C>                                                           <C>
 2        Agreement and Plan of Merger dated September 2, 1996, as
          amended, by and among the registrant, Arcadian Corporation
          and PCS Nitrogen, Inc., incorporated by reference to Exhibit
          2(a) to Amendment Number 2 to the registrant's Form S-4
          (File No. 333-17841).
 3(a)     Restated Articles of Incorporation of the registrant dated
          October 31, 1989, as amended May 11, 1995, incorporated by
          reference to Exhibit 3(i) to the registrant's report on Form
          10-K for the year ended December 31, 1995 (the "1995 Form
          10-K").
 3(b)     Bylaws of the registrant dated March 2, 1995, incorporated
          by reference to Exhibit 3(ii) to the 1995 Form 10-K.
 4(a)     Term Credit Agreement between The Bank of Nova Scotia and
          other financial institutions and the registrant dated
          October 4, 1996, incorporated by reference to Exhibit 4(b)
          to the registrant's Form S-4 (File No. 333-17841).
 4(b)     First Amending Agreement to Term Credit Agreement between
          The Bank of Nova Scotia and other financial institutions and
          the registrant dated November 6, 1997, incorporated by
          reference to Exhibit 4(b) to the registrant's report on Form
          10-K for the year ended December 31, 1997 (the "1997 Form
          10-K").
 4(c)     Second Amending Agreement to Term Credit Agreement between
          The Bank of Nova Scotia and other financial institutions and
          the registrant dated December 15, 1997, incorporated by
          reference to Exhibit 4(c) to the 1997 Form 10-K.
 4(d)     Third Amending Agreement to Term Credit Agreement between
          The Bank of Nova Scotia and other financial institutions and
          the registrant dated October 2, 1998, incorporated by
          reference to Exhibit 4(d) to the registrant's report on Form
          10-Q for the quarterly period ended September 30, 1998.
 4(e)     Fourth Amending Agreement to Term Credit Agreement between
          The Bank of Nova Scotia and other financial institutions and
          the registrant dated September 30, 1999.
 4(f)     Indenture dated as of June 16, 1997, between the registrant
          and The Bank of Nova Scotia Trust Company of New York,
          incorporated by reference to Exhibit 4(a) to the
          registrant's report on Form 8-K dated June 18, 1997.
</TABLE>

     The registrant hereby undertakes to file with the Securities and Exchange
Commission, upon request, copies of any constituent instruments defining the
rights of holders of long-term debt of the registrant or its subsidiaries that
have not been filed herewith because the amounts represented thereby are less
than 10% of the total assets of the registrant and its subsidiaries on a
consolidated basis.

<TABLE>
<CAPTION>

<S>       <C>                                                           <C>
10(a)     Suspension Agreement concerning Potassium Chloride from
          Canada dated January 7, 1988, among U.S. Department of
          Commerce, the registrant, International Minerals and
          Chemical (Canada) Limited, Noranda, Inc. (Central Canada
          Potash Co.), Potash Company of America, a Division of Rio
          Algom Limited, S & P Canada, II (Kalium Chemicals), Cominco
          Ltd., Potash Company of Canada Limited, Agent for
          Denison-Potacan Potash Co. and Saskterra Fertilizers Ltd.,
          incorporated by reference to Exhibit 10(a) to the
          registrant's registration statement on Form F-1 (File No.
          33-31303) (the "F-1 Registration Statement").
10(b)     Sixth Voting Agreement dated April 22, 1978, between Central
          Canada Potash, Division of Noranda, Inc., Cominco Ltd.,
          International Minerals and Chemical Corporation (Canada)
          Limited, PCS Sales and Texasgulf Inc., incorporated by
          reference to Exhibit 10(f) to the F-1 Registration
          Statement.
</TABLE>
<PAGE>   37

<TABLE>
<CAPTION>
EXHIBIT                                                                  PAGE
NUMBER                      DESCRIPTION OF DOCUMENT                     NUMBER
- -------                     -----------------------                     ------
<S>       <C>                                                           <C>
10(c)     Canpotex Limited Shareholders Seventh Memorandum of
          Agreement effective April 21, 1978, between Central Canada
          Potash, Division of Noranda Inc., Cominco Ltd.,
          International Minerals and Chemical Corporation (Canada)
          Limited, PCS Sales, Texasgulf Inc. and Canpotex Limited as
          amended by Canpotex S & P amending agreement dated November
          4, 1987, incorporated by reference to Exhibit 10(g) to the
          F-1 Registration Statement.
10(d)     Producer Agreement dated April 21, 1978, between Canpotex
          Limited and PCS Sales, incorporated by reference to Exhibit
          10(h) to the F-1 Registration Statement.
10(e)     Agreement of Limited Partnership of Arcadian Fertilizer,
          L.P. dated as of March 3, 1992 (form), and the related
          Certificate of Limited Partnership of Arcadian Fertilizer,
          L.P., filed with the Secretary of State of the State of
          Delaware on March 3, 1992 (incorporated by reference to
          Exhibits 3.1 and 3.2 to Arcadian Partners L.P.'s
          Registration Statement on Form S-1 (File No. 33-45828)).
10(f)     Amendment to Agreement of Limited Partnership of Arcadian
          Fertilizer, L.P. and related Certificate of Limited
          Partnership of Arcadian Fertilizer, L.P. filed with the
          Secretary of State of the State of Delaware on March 6, 1997
          and November 26, 1997, incorporated by reference to Exhibit
          10(f) to the registrant's report on Form 10-K for the year
          ended December 31, 1998 (the "1998 Form 10-K").
10(g)     Geismar Complex Services Agreement dated June 4, 1984,
          between Allied Corporation and Arcadian Corporation,
          incorporated by reference to Exhibit 10.4 to Arcadian
          Corporation's Registration Statement on Form S-1 (File No.
          33-34357).
10(h)     Canpotex/PCS Amending Agreement, dated with effect October
          1, 1992, incorporated by reference to Exhibit 10(f) to the
          1995 Form 10-K.
10(i)     Canpotex PCA Collateral Withdrawing/PCS Amending Agreement,
          dated with effect October 7, 1993, incorporated by reference
          to Exhibit 10(g) to the 1995 Form 10-K.
10(j)     Esterhazy Restated Mining and Processing Agreement dated
          January 31, 1978, between International Minerals and
          Chemical Corporation (Canada) Limited and the registrant's
          predecessor, incorporated by reference to Exhibit 10(e) to
          the F-1 Registration Statement.
10(k)     Agreement dated December 21, 1990, between International
          Minerals & Chemical Corporation (Canada) Limited and the
          registrant, amending the Esterhazy Restated Mining and
          Processing Agreement dated January 31, 1978, incorporated by
          reference to Exhibit 10(p) to the registrant's report on
          Form 10-K for the year ended December 31, 1990.
10(l)     Agreement effective August 27, 1998, between International
          Minerals & Chemical (Canada) Global Limited and the
          registrant, amending the Esterhazy Restated Mining and
          Processing Agreement dated January 31, 1978 (as amended),
          incorporated by reference to Exhibit 10(l) to the 1998 Form
          10-K.
10(m)     Agreement effective August 31, 1998, among International
          Minerals & Chemical (Canada) Global Limited, International
          Minerals & Chemical (Canada) Limited Partnership and the
          registrant assigning the interest in the Esterhazy Restated
          Mining and Processing Agreement dated January 31, 1978 (as
          amended) held by International Minerals & Chemical (Canada)
          Global Limited to International Minerals & Chemical (Canada)
          Limited Partnership, incorporated by reference to Exhibit
          10(m) to the 1998 Form 10-K.
</TABLE>
<PAGE>   38

<TABLE>
<CAPTION>
EXHIBIT                                                                  PAGE
NUMBER                      DESCRIPTION OF DOCUMENT                     NUMBER
- -------                     -----------------------                     ------
<S>       <C>                                                           <C>
10(n)     Operating Agreement dated May 11, 1993, between BP Chemicals
          Inc. and Arcadian Ohio, L.P., as amended by the First
          Amendment to the Operating Agreement dated as of November
          20, 1995, between BP Chemicals Inc. and Arcadian Ohio, L.P.
          ("First Amendment"), incorporated by reference to Exhibit
          10.2 to Arcadian Partners L.P.'s current report on Form 8-K
          for the report event dated May 11, 1993, except for the
          First Amendment which is incorporated by reference to
          Arcadian Corporation's report on Form 10-K for the year
          ended December 31, 1995.
10(o)     Second Amendment to Operating Agreement between BP
          Chemicals, Inc. and Arcadian Ohio, L.P., dated as of
          November 25, 1996, incorporated by reference to Exhibit
          10(k) to the 1997 Form 10-K.
10(p)     Manufacturing Support Agreement dated May 11, 1993, between
          BP Chemicals Inc. and Arcadian Ohio, L.P., incorporated by
          reference to Exhibit 10.3 to Arcadian Partners L.P.'s
          current report on Form 8-K for the report event dated May
          11, 1993.
10(q)     First Amendment to Manufacturing Support Agreement between
          BP Chemicals, Inc. and Arcadian Ohio, L.P., dated as of
          November 25, 1996, incorporated by reference to Exhibit
          10(l) to the 1997 Form 10-K.
10(r)     Amended and Restated Agreement for Lease dated as of May 16,
          1997, between Trinidad Ammonia Company, Limited Partnership,
          and PCS Nitrogen Fertilizer, L.P., incorporated by reference
          to Exhibit 10(n) to the registrant's report on Form 10-Q for
          the quarterly period ended June 30, 1997 (the "Second
          Quarter 1997 Form 10-Q").
10(s)     Amended and Restated Lease Agreement dated as of May 16,
          1997, between Trinidad Ammonia Company, Limited Partnership,
          and PCS Nitrogen Fertilizer, L.P., incorporated by reference
          to Exhibit 10(o) to the Second Quarter 1997 Form 10-Q.
10(t)     Amended and Restated Agreement for Lease dated as of May 16,
          1997, between Nitrogen Leasing Company, Limited Partnership,
          and PCS Nitrogen Fertilizer, L.P., incorporated by reference
          to Exhibit 10(p) to the Second Quarter 1997 Form 10-Q.
10(u)     Amended and Restated Lease Agreement dated as of May 16,
          1997, between Nitrogen Leasing Company, Limited Partnership,
          and PCS Nitrogen Fertilizer, L.P., incorporated by reference
          to Exhibit 10(q) to the Second Quarter 1997 Form 10-Q.
10(v)     Amended and Restated Purchase Option Agreement dated as of
          May 16, 1997, between Nitrogen Leasing Company, Limited
          Partnership, and PCS Nitrogen Fertilizer Operations, Inc.,
          incorporated by reference to Exhibit 10(r) to the Second
          Quarter 1997 Form 10-Q.
10(w)     Amended and Restated Purchase Option Agreement dated as of
          May 16, 1997, between Trinidad Ammonia Company, Limited
          Partnership and PCS Nitrogen Fertilizer Operations, Inc.,
          incorporated by reference to Exhibit 10(s) to the Second
          Quarter 1997 Form 10-Q.
10(x)     Agreement dated January 1, 1997 between the registrant and
          Charles E. Childers, incorporated by reference to Exhibit
          10(s) to the 1997 Form 10-K.
10(y)     Potash Corporation of Saskatchewan Inc. Stock Option
          Plan -- Directors, as amended November 3, 1999.
10(z)     Potash Corporation of Saskatchewan Inc. Stock Option
          Plan -- Officers and Key Employees, as amended November 3,
          1999.
10(aa)    Short-Term Incentive Plan of the registrant, as amended May
          7, 1997, incorporated by reference to Exhibit 10(w) to the
          Second Quarter 1997 Form 10-Q.
</TABLE>
<PAGE>   39

<TABLE>
<CAPTION>
EXHIBIT                                                                  PAGE
NUMBER                      DESCRIPTION OF DOCUMENT                     NUMBER
- -------                     -----------------------                     ------
<S>       <C>                                                           <C>
10(bb)    Long-Term Incentive Plan of the registrant, as amended May
          7, 1997, incorporated by reference to Exhibit 10(x) to the
          Second Quarter 1997 Form 10-Q.
10(cc)    Resolution and Forms of Agreement for Supplemental
          Retirement Income Plan, for officers and key employees of
          the registrant, incorporated by reference to Exhibit 10(o)
          to the 1995 Form 10-K.
10(dd)    Forms of Agreement dated December 30, 1994, between the
          registrant and certain officers of the registrant,
          concerning a change in control of the registrant,
          incorporated by reference to Exhibit 10(p) to the 1995 Form
          10-K.
10(ee)    Form of Agreement of Indemnification dated August 8, 1995,
          between the registrant and certain officers and directors of
          the registrant, incorporated by reference to Exhibit 10(q)
          to the 1995 Form 10-K.
10(ff)    Deferred Compensation Plan, for certain officers of PCS
          Phosphate Company, Inc., incorporated by reference to
          Exhibit 10(r) to the 1995 Form 10-K.
10(gg)    Supplemental Retirement Benefits Plan, for eligible
          employees of PCS Phosphate Company, Inc., incorporated by
          reference to Exhibit 10(s) to the 1995 Form 10-K.
10(hh)    Second Amended and Restated Membership Agreement dated
          January 1, 1995, among Phosphate Chemicals Export
          Association, Inc. and members of such association, including
          Texasgulf Inc., incorporated by reference to Exhibit 10(t)
          to the 1995 Form 10-K.
10(ii)    International Agency Agreement dated January 1, 1995,
          between Phosphate Chemicals Export Association, Inc. and
          Texasgulf Inc. establishing Texasgulf Inc. as exclusive
          marketing agent for such association's wet phosphatic
          materials, incorporated by reference to Exhibit 10(u) to the
          1995 Form 10-K.
10(jj)    General Partnership Agreement forming Albright & Wilson
          Company, dated July 29, 1988 and amended January 31, 1995,
          between Texasgulf Inc. and Albright & Wilson Americas, Inc.,
          incorporated by reference to Exhibit 10(v) to the 1995 Form
          10-K.
10(kk)    Royalty Agreement dated October 7, 1993, by and between the
          registrant and Rio Algom Limited, incorporated by reference
          to Exhibit 10(x) to the 1995 Form 10-K.
10(ll)    Amending Resolution and revised forms of agreement regarding
          Supplemental Retirement Income Plan of the registrant,
          incorporated by reference to Exhibit 10(x) to the
          registrant's report on Form 10-Q for the quarterly period
          ended June 30, 1996.
10(mm)    Shareholder Rights Agreement as amended and restated on
          March 2, 1998, incorporated by reference to Schedule B to
          the registrant's proxy circular for the annual and special
          meeting of shareholders held on May 7, 1998.
11        Statement re Computation of Per Share Earnings.
27        Financial Data Schedule.
</TABLE>

<PAGE>   1

                                                                    EXHIBIT 4(E)

                           FOURTH AMENDING AGREEMENT

     THIS AGREEMENT made as of the 1st day of October, 1999.

BETWEEN:

           THE BANK OF NOVA SCOTIA

           (herein, in its capacity as agent to the Lenders, called
           the "Agent")

           -- and --

           THE BANK OF NOVA SCOTIA, ROYAL BANK OF CANADA, BANK OF
           MONTREAL, BANQUE NATIONALE DE PARIS -- CHICAGO, TORONTO
           DOMINION (TEXAS), INC., BANK OF AMERICA NA, CANADIAN
           IMPERIAL BANK OF COMMERCE, CITIBANK N.A., NEW YORK, CREDIT
           SUISSE FIRST BOSTON, DEUTSCHE BANK A.G., NEW YORK AND/OR
           CAYMAN ISLAND BRANCH and RABOBANK NEDERLAND, NEW YORK
           BRANCH

           (herein, in their capacities as lenders to the Borrower
           under the Credit Facility, collectively called the
           "Lenders" and individually called a "Lender")

           -- and --

           COMERICA BANK

           (herein called "Comerica")

           -- and --

           POTASH CORPORATION OF SASKATCHEWAN INC., a corporation
           incorporated under the laws of the Province of
           Saskatchewan

           (herein called the "Borrower").

     WHEREAS the Borrower, the Lenders and the Agent entered into a credit
agreement made as of October 4, 1996 as amended by agreements dated November 6,
1997, December 15, 1997 and October 2, 1998 (the "Credit Agreement") and
pursuant to which the Lenders established a certain term credit facility in
favour of the Borrower;

     AND WHEREAS the Borrower, the Lenders and the Agent have agreed to effect
certain amendments to the Credit Agreement upon the terms set forth herein;

     NOW THEREFORE THIS AGREEMENT WITNESSES that, in consideration of the mutual
covenants and agreements and for other good and valuable consideration (the
receipt and sufficiency of which are hereby acknowledged), the parties hereto
hereby agree as follows:

                                   ARTICLE I
                                 DEFINED TERMS

1.01.  Capitalized Terms.  All capitalized terms which are used herein without
being specifically defined herein shall have the meaning ascribed thereto in the
Credit Agreement.
<PAGE>   2

                                   ARTICLE II
                                   AMENDMENTS

2.01.  General Rule.  The Credit Agreement is hereby amended to the extent
necessary to give full effect to the provisions of this agreement.

2.02.  Definitions.  Section 1.01 of the Credit Agreement is hereby amended as
follows:

     (i)   the definition of "Applicable Margin" is deleted and replaced by the
           following:

           "Applicable Margin" means, at any time, the applicable rate per annum
           set forth in the table below for the applicable S&P rating and the
           applicable Utilization Rate:

<TABLE>
<CAPTION>
                                                                 UTILIZATION RATE
                                              ------------------------------------------------------
                                                                     greater
                                                                     than or
                                                                   equal to 1/3          greater
         S&P's Corporate Credit or Unsecured       LESS              and less            than or
         Debt Rating of Borrower                 than 1/3            than 2/3         EQUAL TO 2/3
         -----------------------------------  ---------------    ----------------    ---------------
         <S>                                  <C>                <C>                 <C>
         A- or above....................       .40% per annum     .475% per annum     .55% per annum
         BBB+...........................       .50% per annum     .575% per annum     .65% per annum
         BBB............................       .60% per annum     .675% per annum     .75% per annum
         BBB-...........................       .75% per annum     .825% per annum     .90% per annum
         BB+ or below or unrated........      1.00% per annum    1.075% per annum    1.15% per annum
</TABLE>

     (ii)  the definition of "Conversion Date" is deleted and replaced by the
           following:

           "Conversion Date" means September 29, 2000, as extended pursuant to
           Section 1.13.;

     (iii) the definition of "Standby Fee Rate" is deleted and replaced by the
           following:

           "Standby Fee Rate" means, at any time, the applicable rate per annum
           set forth in the table below opposite the applicable S&P rating:

<TABLE>
<CAPTION>
         S&P'S CORPORATE CREDIT OR UNSECURED DEBT RATING OF BORROWER   STANDBY FEE RATE
         -----------------------------------------------------------   ----------------
         <S>                                                           <C>
         A- or above.................................................  .10% per annum
         BBB+........................................................  .125% per annum
         BBB.........................................................  .15% per annum
         BBB-........................................................  .175% per annum
         BB+ or below or unrated.....................................  .25% per annum
</TABLE>

     (iv)  the following definition is added:

           "Utilization Rate" means, at any particular time, the fraction
           obtained by dividing the amount of Accommodation outstanding under
           the Credit Facility at such time by the amount of the Credit Facility
           at such time.

2.03.  Establishment of Credit Facility.  Section 2.01 of the Credit Agreement
is hereby amended by replacing "U.S. $925,000,000" in the last line thereof with
"U.S. $778,000,000".

2.04.  Term-Out Premium.  Section 7.01 of the Credit Agreement is hereby amended
by adding the following at the end thereof:

           "After the Conversion Date, the Applicable Margin shall increase by
           0.15% per annum."
<PAGE>   3

2.05.  New Lender.  Comerica hereby agrees to be bound by the terms of the
Credit Agreement as a Lender with an Individual Commitment of $25,000,000 and
the following address for notice for the purpose of Section 15.02 of the Credit
Agreement and Schedule A to the Credit Agreement:

     500 Woodward Avenue, 23rd Floor
     Detroit, Michigan 48226

     Attention:  Marian Enright
     Telefax:     (313) 222-3377

2.06.  Individual Commitments.  Schedule A to the Credit Agreement is hereby
amended by restating the Individual Commitment of each of the Lenders with
respect to the Credit Facility as follows:

<TABLE>
<CAPTION>
LENDER                                                           AMOUNT
- ------                                                        ------------
<S>                                                           <C>
The Bank of Nova Scotia.....................................  $190,000,000
Royal Bank of Canada........................................  $120,000,000
Banque Nationale de Paris -- Chicago........................  $113,000,000
Canadian Imperial Bank of Commerce..........................  $ 75,000,000
Bank of America NA..........................................  $ 60,000,000
Bank of Montreal............................................  $ 50,000,000
Toronto Dominion (Texas), Inc...............................  $ 50,000,000
Credit Suisse First Boston..................................  $ 40,000,000
Citibank N.A., New York.....................................  $ 30,000,000
Rabobank Nederland, New York Branch.........................  $ 25,000,000
Comerica Bank...............................................  $ 25,000,000
Deutsche Bank A.G., New York and/or Cayman Island Branch....           Nil
</TABLE>

2.07.  Departing Lender.  The parties hereto confirm that Deutsche Bank A.G.,
New York and/or Cayman Island Branch (the "Departing Lender") hereby ceases to
be a Lender under the Credit Agreement and has no further obligations under the
Credit Agreement. The parties hereto agree that the Departing Lender is a
signatory to this agreement solely for the purpose of giving effect to this
Section 2.07.

2.08.  Deliveries Pursuant to Credit Agreement.  For the purposes of the Credit
Agreement, this agreement and any document or instrument referred to herein
shall be deemed to be delivered pursuant to the Credit Agreement and to be
referred to in the Credit Agreement.

2.09.  Extension Fee.  The Borrower hereby agrees to pay to each Lender (prior
to giving effect to this agreement and other than Deutsche Bank A.G., New York
and/or Cayman Island Branch) on the date hereof an extension fee in an amount
equal to 0.025% of the Individual Commitment of such Lender (after giving effect
to this agreement).

                                  ARTICLE III
                         REPRESENTATIONS AND WARRANTIES

3.01.  Representations and Warranties.  To induce the Lenders and the Agent to
enter into this agreement, the Borrower hereby represents and warrants to the
Lenders and the Agent that the representations and warranties of the Borrower
which are contained in Sections 10.01(e) to (l) of the Credit Agreement, as the
same may be amended hereby, are true and correct, and further represents and
warrants, as at the date hereof, as follows:

     (a)  Status and Power.  The Borrower is a corporation duly incorporated and
          organized and validly subsisting in good standing under the laws of
          the Province of Saskatchewan. The Borrower is duly qualified,
          registered or licensed in all jurisdictions where such qualification,
          registration or licensing is required. The Borrower has all requisite
          corporate capacity, power and authority to own, hold under licence or
          lease its properties and to carry on its business as now conducted.
          The Borrower
<PAGE>   4
          has all requisite corporate capacity, power and authority to enter
          into and carry out the transactions contemplated by this agreement.

     (b)  Authorization and Enforcement.  All necessary action, corporate or
          otherwise, has been taken to authorize the execution, delivery and
          performance by the Borrower of this agreement. The Borrower has duly
          executed and delivered this agreement. This agreement is a legal,
          valid and binding obligation of the Borrower enforceable against the
          Borrower by the Agent and the Lenders in accordance with its terms,
          subject to the qualifications of the nature contained in the opinion
          of the Borrower's counsel delivered pursuant to Section 12.02(d)(vii)
          of the Credit Agreement.

     (c)  Compliance with Other Instruments.  The execution, delivery and
          performance by the Borrower of this agreement and the consummation of
          the transactions contemplated herein do not conflict with, result in
          any breach or violation of, or constitute a default under the terms,
          conditions or provisions of the charter or constating documents or
          by-laws of, or any unanimous shareholder agreement relating to, the
          Borrower or of any law, regulation, judgment, decree or order binding
          on or applicable to the Borrower or to which its property is subject
          or of any material agreement, lease, licence, permit or other
          instrument to which the Borrower is a party or is otherwise bound or
          by which the Borrower benefits or to which its property is subject and
          do not require the consent or approval of any Official Body or any
          other party.

                                       ARTICLE IV
                                     MISCELLANEOUS

4.01.  Future References.  On and after the effective date of this agreement,
each reference in the Credit Agreement to "this Agreement", "hereunder",
"hereof", or words of like import referring to the Credit Agreement, and each
reference in any related document to the "Credit Agreement", "thereunder",
"thereof ", or words of like import referring to the Credit Agreement, shall
mean and be a reference to the Credit Agreement as amended hereby, and each such
related document is hereby amended accordingly. The Credit Agreement, as amended
hereby, is and shall continue to be in full force and effect and is hereby in
all respects ratified and confirmed.

4.02.  Governing Law.  This agreement shall be governed by and construed in
accordance with the laws of the Province of Ontario.

4.03.  Enurement.  This agreement shall enure to the benefit of and shall be
binding upon the parties hereto and their respective successors and permitted
assigns.

4.04.  Conflict.  If any provision of this agreement is inconsistent or
conflicts with any provision of the Credit Agreement, the relevant provision of
this agreement shall prevail and be paramount.

4.05.  Further Assurances.  The Borrower shall do, execute and deliver or shall
cause to be done, executed and delivered all such further acts, documents and
things as the Agent may reasonably request for the purpose of giving effect to
this agreement and to each and every provision hereof.

4.06.  Counterparts.  This agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original and all of which
taken together shall be deemed to constitute one and the same instrument.
<PAGE>   5

     IN WITNESS WHEREOF the parties hereto have executed this agreement.

                                        THE BANK OF NOVA SCOTIA,
                                        as Agent

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        POTASH CORPORATION
                                        OF SASKATCHEWAN INC.

                                        By: /s/
                                           -------------------------------------

                                                                            c.s.

                                        By: /s/
                                           -------------------------------------

                                        THE BANK OF NOVA SCOTIA,
                                        as Lender

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        BANQUE NATIONALE DE PARIS -- CHICAGO

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------
<PAGE>   6

                                        ROYAL BANK OF CANADA

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        CANADIAN IMPERIAL BANK OF COMMERCE

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        BANK OF AMERICA NA

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        BANK OF MONTREAL

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                         TORONTO DOMINION (TEXAS), INC.

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------
<PAGE>   7

                                        CREDIT SUISSE FIRST BOSTON

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        CITIBANK N.A., NEW YORK

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        RABOBANK NEDERLAND,
                                        NEW YORK BRANCH

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        COMERICA BANK

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------

                                        DEUTSCHE BANK A.G., NEW YORK
                                        AND/OR CAYMAN ISLAND BRANCH

                                        By: /s/
                                           -------------------------------------

                                        By: /s/
                                           -------------------------------------
<PAGE>   8

     The undersigned, being a guarantor of the indebtedness, liabilities and
obligations of the Borrower to the Lenders, hereby consents to the foregoing
amendments to the Credit Agreement.

     DATED as of the 1st day of October, 1999.

                                        PCS NITROGEN, INC.

                                        By: /s/
                                           -------------------------------------
                                                                            c.s.

                                        By: /s/
                                           -------------------------------------

<PAGE>   1

                                                                   EXHIBIT 10(Y)

                    POTASH CORPORATION OF SASKATCHEWAN INC.
                         STOCK OPTION PLAN -- DIRECTORS

1.   PURPOSE OF PLAN

     Potash Corporation of Saskatchewan Inc. (the "Corporation") by resolution
     of its Board of Directors (the "Board") has established this Plan to
     encourage directors of the Corporation to promote the growth and
     profitability of the Corporation by providing them with the opportunity
     through options to acquire Common Shares of the Corporation ("Common
     Shares"). The Corporation's Stock Option Incentive Plan, previously in
     effect, has been bifurcated into this Plan and the Corporation's Stock
     Option Plan -- Officers and Key Employees.

2.   ADMINISTRATION

     This Plan shall be administered by the Board.

3.   GRANT OF OPTIONS

     From time to time the Board may designate individual directors of the
     Corporation to be granted options to purchase Common Shares and the number
     of Common Shares which each such person will be granted an option to
     purchase; provided that the aggregate number of Common Shares subject to
     such options may not exceed the number provided for in paragraph 4 of this
     Plan.

4.   SHARES SUBJECT TO OPTION

     The aggregate number of Common Shares issuable after January 24, 1995
     pursuant to options under this Plan may not exceed 456,000 shares. The
     number of Common Shares issuable pursuant to options under this Plan shall
     be subject to adjustment under paragraphs 8 and 9.

     The aggregate number of Common Shares in respect of which options have been
     granted to any one person and which remain outstanding shall not at any
     time exceed 5% of the number of issued and outstanding Common Shares (on a
     non-diluted basis) at that time.

     If any option granted under this Plan, or any portion thereof, expires or
     terminates for any reason without having been exercised in full, the Common
     Shares with respect to which such option has not been exercised shall again
     be available for further options under this Plan.

5.   OPTION PRICE

     The option price under this Plan to any optionee shall be the fair market
     value of the Common Shares at such time which, for optionees resident in
     the United States and any other optionees designated by the Board, shall be
     deemed to be the closing price per share of the Common Shares on the New
     York Stock Exchange on the last trading day immediately preceding the day
     the option is granted and, for all other optionees, shall be deemed to be
     the closing price per share of the Common Shares on The Toronto Stock
     Exchange on the last trading day immediately preceding the day the option
     is granted; provided that, in either case, if the Common Shares did not
     trade on such exchange on such day the option price shall be the closing
     price per share on such exchange on the last day on which the Common Shares
     traded on such exchange prior to the day the option is granted.

6.   TERMS OF OPTION

     The period during which an option is exercisable shall be 10 years from the
     date the option is granted. The option agreement may contain provisions
     limiting the number of Common Shares with respect to
<PAGE>   2

     which the option may be exercised in any one year. Each option agreement
     shall contain provisions to the effect that:

     (a)  if an optionee ceases to be a director of the Corporation by reason of
          his or her death or an optionee who is a retiree pursuant to clause
          (b) below dies, the legal personal representatives of the optionee
          will be entitled to exercise any unexercised options, including such
          options that may vest after the date of death, during the period
          ending at the end of the twelfth calendar month following the calendar
          month in which the optionee dies, failing which exercise the options
          terminate;

     (b)  subject to the terms of clause (a) above, if an optionee ceases to be
          a director of the Corporation by reason of retirement in accordance
          with then prevailing retirement policy of the Corporation, the
          optionee will be entitled to exercise any unexercised options,
          including such options as may vest after the date of retirement, until
          the expiry date of such options or the date on which such options are
          otherwise terminated in accordance with the provisions of this Plan,
          failing which exercise the options terminate;

     (c)  if an optionee ceases to be a director of the Corporation for any
          reason other than as provided in the preceding clauses (a) or (b), the
          optionee will be entitled to exercise any unexercised options, to the
          extent exercisable at the date of such event, during the period ending
          at the end of the calendar month immediately following the calendar
          month in which the event occurs, failing which exercise the options
          terminate; and

     (d)  each option is personal to the optionee and is not assignable, except
          (i) as provided in the preceding clause (a), and (ii) at the election
          of the Board, an option may be assignable to the spouse, children and
          grandchildren of the original optionee and to a trust, partnership or
          limited liability company, the entire beneficial interest of which is
          held by one or more of the foregoing.

     Nothing contained in the preceding clauses (a), (b) or (c) shall extend the
     period during which an option may be exercised beyond its stipulated expiry
     date or the date on which it is otherwise terminated in accordance with the
     provisions of this Plan.

     If an option is assigned pursuant to the preceding subclause (ii) of clause
     (d), the references in the preceding clauses (a), (b) and (c) to ceasing to
     be a director or death of an optionee shall not relate to the assignee of
     an option but shall relate to the original optionee. In the event of such
     assignment, legal personal representatives of the original optionee shall
     not be entitled to exercise the assigned option, but the assignee of the
     option or the legal personal representatives of the assignee may exercise
     the option during the applicable specified period.

7.   EXERCISE OF OPTIONS

     Subject to the provisions of this Plan, an option may be exercised from
     time to time by delivering to the Corporation at its registered office a
     written notice of exercise specifying the number of shares with respect to
     which the option is being exercised and accompanied by payment in cash or
     certified cheque in full of the purchase price of the shares then being
     purchased.

8.   ADJUSTMENTS

     Appropriate adjustments in the number of shares optioned and in the option
     price per share, both as to options granted or to be granted, may be made
     by the Board in its discretion to give effect to adjustments in the number
     of Common Shares which result from subdivisions, consolidations or
     reclassifications of the Common Shares, the payment of share dividends by
     the Corporation, the reconstruction, reorganization or recapitalization of
     the Corporation or other relevant changes in the capital of the
     Corporation. If the Corporation sells all or substantially all of its
     assets as an entirety or substantially as an entirety, options under this
     Plan may be exercised, in whole or in part, at any time up to and including
     (but not after) a date 30 days following the date of completion of such
     sales or prior to the close of business on the date the option expires,
     whichever is earlier.
<PAGE>   3

9.   MERGERS

     If the Corporation proposes to amalgamate or merge with another body
     corporate, the Corporation shall give written notice thereof to optionees
     in sufficient time to enable them to exercise outstanding options, to the
     extent they are otherwise exercisable by their terms, prior to the
     effective date of such amalgamation or merger if they so elect. The
     Corporation shall use its best efforts to provide for the reservation and
     issuance by the amalgamated or continuing corporation of an appropriate
     number of shares, with appropriate adjustments, so as to give effect to the
     continuance of the options to the extent reasonably practicable. In the
     event that the Board determines in good faith that such continuance is not
     in the circumstances practicable, it may upon 30 days' notice to optionees
     terminate the options.

10.  CHANGE OF CONTROL

     If a "change of control" of the Corporation occurs, each option granted
     under this Plan may be exercised, in whole or in part, even if such option
     is not otherwise exercisable by its terms. For purposes of this paragraph
     10, a change of control of the Corporation shall be deemed to have occurred
     if:

     (a)  within any period of two consecutive years, individuals who at the
          beginning of such period constituted the Board and any new directors
          whose appointment by the Board or nomination for election by
          shareholders of the Corporation was approved by a vote of at least a
          majority of the directors then still in office who either were
          directors at the beginning of the period or whose appointment or
          nomination for election was previously so approved, cease for any
          reason to constitute a majority of the Board;

     (b)  there occurs an amalgamation, merger, consolidation, wind-up,
          reorganization or restructuring of the Corporation with or into any
          other entity, or a similar event or series of such events, other than
          any such event or series of events which results in securities of the
          surviving or consolidated corporation representing 50% or more of the
          combined voting power of the surviving or consolidated corporation's
          then outstanding securities entitled to vote in the election of
          directors of the surviving or consolidated corporation being
          beneficially owned, directly or indirectly, by the persons who were
          the holders of the Corporation's outstanding securities entitled to
          vote in the election of directors of the Corporation prior to such
          event or series of events in substantially the same proportions as
          their ownership immediately prior to such event of the Corporation's
          then outstanding securities entitled to vote in the election of
          directors of the Corporation;

     (c)  50% or more of the fixed assets (based on book value as shown on the
          most recent available audited annual or unaudited quarterly
          consolidated financial statements) of the Corporation are sold or
          otherwise disposed of (by liquidation, dissolution, dividend or
          otherwise) in one transaction or series of transactions within any
          twelve month period;

     (d)  any party, including persons acting jointly or in concert with that
          party, becomes (through a take-over bid or otherwise) the beneficial
          owner, directly or indirectly, of securities of the Corporation
          representing 20% or more of the combined voting power of the
          Corporation's then outstanding securities entitled to vote in the
          election of directors of the Corporation, unless in any particular
          situation the Board determines in advance of such event that such
          event shall not constitute a change of control; or

     (e)  the Board of Directors of the Corporation approves and/or recommends
          that shareholders accept, approve or adopt any transaction that would
          constitute a change of control under clause (b), (c) or (d) above.

11.  AMENDMENT OR DISCONTINUANCE OF THIS PLAN

     The Board may amend or discontinue this Plan at any time but, subject to
     paragraphs 8, 9 and 10, no such amendment may increase the aggregate
     maximum number of shares that may be subject to option under this Plan,
     change the manner of determining the minimum option price, extend the
     option period under any option beyond 10 years or, without the consent of
     the holder of the option, alter or impair any
<PAGE>   4

     option previously granted to an optionee under this Plan. Amendments to the
     Plan require pre-clearance of The Toronto Stock Exchange and the Montreal
     Exchange.

12.  EVIDENCE OF OPTIONS

     Each option granted under this Plan shall be embodied in a written option
     agreement between the Corporation and the optionee which shall give effect
     to the provisions of this Plan.

<PAGE>   1

                                                                   EXHIBIT 10(Z)

                    POTASH CORPORATION OF SASKATCHEWAN INC.
                STOCK OPTION PLAN -- OFFICERS AND KEY EMPLOYEES

1.   PURPOSE OF PLAN

     Potash Corporation of Saskatchewan Inc. (the "Corporation") by resolution
     of its Board of Directors (the "Board") has established this Plan to
     encourage officers and key employees of the Corporation and its
     subsidiaries to promote the growth and profitability of the Corporation by
     providing them with the opportunity through options to acquire Common
     Shares of the Corporation ("Common Shares"). The Corporation's Stock Option
     Incentive Plan, previously in effect, has been bifurcated into this Plan
     and the Corporation's Stock Option Plan -- Directors.

2.   ADMINISTRATION

     This Plan shall be administered by the Board.

3.   GRANT OF OPTIONS

     From time to time the Board may designate individual officers and key
     employees of the Corporation and its subsidiaries eligible to be granted
     options to purchase Common Shares and the number of Common Shares which
     each such person will be granted an option to purchase; provided that the
     aggregate number of Common Shares subject to such options may not exceed
     the number provided for in paragraph 4 of this Plan.

4.   SHARES SUBJECT TO OPTION

     The aggregate number of Common Shares issuable after February 3, 1998
     pursuant to options under this Plan may not exceed 6,926,125 shares. The
     number of Common Shares issuable pursuant to options under this Plan shall
     be subject to adjustment under paragraphs 8 and 9.

     The aggregate number of Common Shares in respect of which options have been
     granted to any one person and which remain outstanding shall not at any
     time exceed 5% of the number of issued and outstanding Common Shares (on a
     non-diluted basis) at that time.

     If any option granted under this Plan, or any portion thereof, expires or
     terminates for any reason without having been exercised in full, the Common
     Shares with respect to which such option has not been exercised shall again
     be available for further options under this Plan.

5.   OPTION PRICE

     The option price under this Plan to any optionee shall be fixed by the
     Board when the option is granted and shall be not less than the fair market
     value of the Common Shares at such time which, for optionees resident in
     the United States and any other optionees designated by the Board, shall be
     deemed to be the closing price per share of the Common Shares on the New
     York Stock Exchange on the last trading day immediately preceding the day
     the option is granted and, for all other optionees, shall be deemed to be
     the closing price per share of the Common Shares on The Toronto Stock
     Exchange on the last trading day immediately preceding the day the option
     is granted; provided that, in either case, if the Common Shares did not
     trade on such exchange on such day the option price shall be the closing
     price per share on such exchange on the last day on which the Common Shares
     traded on such exchange prior to the day the option is granted.
<PAGE>   2

6.   TERMS OF OPTION

     The period during which an option is exercisable may not exceed 10 years
     from the date the option is granted, and the option agreement may contain
     provisions limiting the number of Common Shares with respect to which the
     option may be exercised in any one year. Each option agreement shall
     contain provisions to the effect that:

     (a)  if the employment of an optionee as an officer or employee of the
          Corporation or a subsidiary terminates, by reason of his or her death,
          or if an optionee who is a retiree pursuant to clause (b) below dies,
          the legal personal representatives of the optionee will be entitled to
          exercise any unexercised options, including such options that may vest
          after the date of death, during the period ending at the end of the
          twelfth calendar month following the calendar month in which the
          optionee dies, failing which exercise the options terminate;

     (b)  subject to the terms of clause (a) above, if the employment of an
          optionee as an officer or employee of the Corporation or a subsidiary
          terminates, by reason of retirement in accordance with then prevailing
          retirement policy of the Corporation or subsidiary, the optionee will
          be entitled to exercise any unexercised options, including such
          options as may vest after the date of retirement, until the expiry
          date of such options or the date on which such options are otherwise
          terminated in accordance with the provisions of this Plan, failing
          which exercise the options terminate;

     (c)  if the employment of an optionee as an officer or employee of the
          Corporation or a subsidiary terminates, for any reason other than as
          provided in the preceding clauses (a) or (b), the optionee will be
          entitled to exercise any unexercised options, to the extent
          exercisable at the date of such event, during the period ending at the
          end of the calendar month immediately following the calendar month in
          which the event occurs, failing which exercise the options terminate;
          and

     (d)  each option is personal to the optionee and is not assignable, except
          (i) as provided in the preceding clause (a), and (ii) at the election
          of the Board, an option may be assignable to the spouse, children and
          grandchildren of the original optionee and to a trust, partnership or
          limited liability company, the entire beneficial interest of which is
          held by one or more of the foregoing.

     Nothing contained in the preceding clauses (a), (b), or (c) shall extend
     the period during which an option may be exercised beyond its stipulated
     expiry date or the date on which it is otherwise terminated in accordance
     with the provisions of this Plan.

     If an option is assigned pursuant to the preceding subclause (ii) of clause
     (d), the references in the preceding clauses (a), (b) and (c) to the
     termination of employment or death of an optionee shall not relate to the
     assignee of an option but shall relate to the original optionee. In the
     event of such assignment, legal personal representatives of the original
     optionee shall not be entitled to exercise the assigned option, but the
     assignee of the option or the legal personal representatives of the
     assignee may exercise the option during the applicable specified period.

7.   EXERCISE OF OPTIONS

     Subject to the provisions of this Plan, an option may be exercised from
     time to time by delivering to the Corporation at its registered office a
     written notice of exercise specifying the number of shares with respect to
     which the option is being exercised and accompanied by payment in cash or
     certified cheque in full of the purchase price of the shares then being
     purchased.

8.   ADJUSTMENTS

     Appropriate adjustments in the number of shares optioned and in the option
     price per share, both as to options granted or to be granted, may be made
     by the Board in its discretion to give effect to adjustments in the number
     of Common Shares which result from subdivisions, consolidations or
     reclassifications of the Common Shares, the payment of share dividends by
     the Corporation, the reconstruction, reorganization or recapitalization of
     the Corporation or other relevant changes in the capital of the
<PAGE>   3

     Corporation. If the Corporation sells all or substantially all of its
     assets as an entirety or substantially as an entirety, options under this
     Plan may be exercised, in whole or in part, at any time up to and including
     (but not after) a date 30 days following the date of completion of such
     sales or prior to the close of business on the date the option expires,
     whichever is earlier.

9.   MERGERS

     If the Corporation proposes to amalgamate or merge with another body
     corporate, the Corporation shall give written notice thereof to optionees
     in sufficient time to enable them to exercise outstanding options, to the
     extent they are otherwise exercisable by their terms, prior to the
     effective date of such amalgamation or merger if they so elect. The
     Corporation shall use its best efforts to provide for the reservation and
     issuance by the amalgamated or continuing corporation of an appropriate
     number of shares, with appropriate adjustments, so as to give effect to the
     continuance of the options to the extent reasonably practicable. In the
     event that the Board determines in good faith that such continuance is not
     in the circumstances practicable, it may upon 30 days' notice to optionees
     terminate the options.

10.  CHANGE OF CONTROL

     If a "change of control" of the Corporation occurs, each option granted
     under this Plan may be exercised, in whole or in part, even if such option
     is not otherwise exercisable by its terms. For purposes of this paragraph
     10, a change of control of the Corporation shall be deemed to have occurred
     if:

     (a)  within any period of two consecutive years, individuals who at the
          beginning of such period constituted the Board and any new directors
          whose appointment by the Board or nomination for election by
          shareholders of the Corporation was approved by a vote of at least a
          majority of the directors then still in office who either were
          directors at the beginning of the period or whose appointment or
          nomination for election was previously so approved, cease for any
          reason to constitute a majority of the Board;

     (b)  there occurs an amalgamation, merger, consolidation, wind-up,
          reorganization or restructuring of the Corporation with or into any
          other entity, or a similar event or series of such events, other than
          any such event or series of events which results in securities of the
          surviving or consolidated corporation representing 50% or more of the
          combined voting power of the surviving or consolidated corporation's
          then outstanding securities entitled to vote in the election of
          directors of the surviving or consolidated corporation being
          beneficially owned, directly or indirectly, by the persons who were
          the holders of the Corporation's outstanding securities entitled to
          vote in the election of directors of the Corporation prior to such
          event or series of events in substantially the same proportions as
          their ownership immediately prior to such event of the Corporation's
          then outstanding securities entitled to vote in the election of
          directors of the Corporation;

     (c)  50% or more of the fixed assets (based on book value as shown on the
          most recent available audited annual or unaudited quarterly
          consolidated financial statements) of the Corporation are sold or
          otherwise disposed of (by liquidation, dissolution, dividend or
          otherwise) in one transaction or series of transactions within any
          twelve month period;

     (d)  any party, including persons acting jointly or in concert with that
          party, becomes (through a take-over bid or otherwise) the beneficial
          owner, directly or indirectly, of securities of the Corporation
          representing 20% or more of the combined voting power of the
          Corporation's then outstanding securities entitled to vote in the
          election of directors of the Corporation, unless in any particular
          situation the Board determines in advance of such event that such
          event shall not constitute a change of control; or

     (e)  the Board approves and/or recommends that shareholders accept, approve
          or adopt any transaction that would constitute a change of control
          under clause (b), (c) or (d) above.
<PAGE>   4

11.  AMENDMENT OR DISCONTINUANCE OF THIS PLAN

     The Board may amend or discontinue the Plan at any time but, subject to
     paragraphs 8, 9, and 10, no such amendment may increase the aggregate
     maximum number of shares that may be subject to option under this Plan,
     change the manner of determining the minimum option price, extend the
     option period under any option beyond 10 years or, without the consent of
     the holder of the option, alter or impair any option previously granted to
     an optionee under this Plan. Amendments to the Plan require pre-clearance
     of The Toronto Stock Exchange and the Montreal Exchange.

12.  EVIDENCE OF OPTIONS

     Each option granted under this Plan shall be embodied in a written option
     agreement between the Corporation and the optionee which shall give effect
     to the provisions of this Plan.

<PAGE>   1
                                                                      Exhibit 11


                     POTASH CORPORATION OF SASKATCHEWAN INC.
                        COMPUTATION OF PER SHARE EARNINGS
                    FOR THE QUARTER ENDED SEPTEMBER 30, 1999

                  (Figures and amounts expressed in thousands,
                    except per share and per option amounts)

<TABLE>
<CAPTION>
                                                                   Q3-1999         Q3-1998
                                                                -----------     ------------
<S>                                                             <C>             <C>
A  Net income as reported, Canadian GAAP ...................    $  (524,244)    $     54,704

B  Items adjusting net income ..............................    $  (167,363)            --

C  Net income, US GAAP (A+B) ...............................    $  (691,607)    $     54,704

D  Weighted average number of shares outstanding ...........         54,269           54,235

E  Options outstanding to purchase equivalent shares .......          2,939            2,131

F  Average exercise price per option .......................    $     70.44     $      71.27

G  Average market price per share ..........................    $     54.14     $      63.98

H  Period end market price per share .......................    $     51.63     $      52.63

I  Rate of Return available on option proceeds .............           5.00%            5.00%

   CANADIAN GAAP

   Basic earnings per share (A/D) ..........................    $     (9.66)    $       1.01

   Fully diluted earnings per share

J  Imputed earnings on options proceeds ((E*F*I)/4) ........    $     2,588     $      1,898

   Fully diluted earnings per share ((A+J)/(D+E)) ..........    $     (9.12)    $       1.00

   UNITED STATES GAAP

   Basic earnings per share (C/D) ..........................    $    (12.74)    $       1.01

   Fully diluted earnings per share

K  Net additional shares issuable (E-(E*F/G)) ..............              0                0

   Fully diluted earnings per share (C/(D+K)) ..............    $    (12.74)    $       1.01
</TABLE>


<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          23,265
<SECURITIES>                                         0
<RECEIVABLES>                                  259,879
<ALLOWANCES>                                   (6,959)
<INVENTORY>                                    354,137
<CURRENT-ASSETS>                               667,554
<PP&E>                                       3,779,270
<DEPRECIATION>                               (911,529)
<TOTAL-ASSETS>                               3,856,124
<CURRENT-LIABILITIES>                          739,509
<BONDS>                                        444,322
                                0
                                          0
<COMMON>                                     1,229,142
<OTHER-SE>                                     763,331
<TOTAL-LIABILITY-AND-EQUITY>                 3,856,124
<SALES>                                      1,567,402
<TOTAL-REVENUES>                             1,567,402
<CGS>                                        1,238,299
<TOTAL-COSTS>                                1,238,299
<OTHER-EXPENSES>                               128,628
<LOSS-PROVISION>                               580,521
<INTEREST-EXPENSE>                              40,110
<INCOME-PRETAX>                              (420,156)
<INCOME-TAX>                                     2,781
<INCOME-CONTINUING>                          (422,937)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 (422,937)
<EPS-BASIC>                                   (7.79)
<EPS-DILUTED>                                   (7.79)


</TABLE>


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