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Item 1.      Business.

General

Potash Corporation of Saskatchewan Inc. is a corporation organized under the laws of Canada. As used in this document, the term “PCS” refers to Potash Corporation of Saskatchewan Inc. and the terms “we,” “us,” “our,” “PotashCorp” and the “Company” refer to PCS and its direct and indirect subsidiaries, individually or in any combination, as applicable.

We are one of the world’s largest integrated fertilizer and related industrial and feed products companies. We are the largest producer of potash worldwide by capacity. In 2006, we estimate our potash operations represented 15% of global production, 22% of global potash capacity and 55% of global potash excess capacity. We are the third largest producer of phosphates worldwide by capacity. In 2006, we estimate our phosphate operations produced 6% of world phosphoric acid production. In 2006, we estimate our nitrogen operations were the fourth largest producer of nitrogen products worldwide by capacity and produced 2% of world ammonia production.

Our potash is produced from six mines in Saskatchewan and one mine in New Brunswick. Of these mines, we own and operate five in Saskatchewan and the one in New Brunswick.

Our phosphate operations include the manufacture and sale of solid and liquid phosphate fertilizers, animal feed supplements and industrial acid, which is used in food products and industrial processes. We believe that our North Carolina facility is the world’s largest integrated phosphate mine and processing plant. We also have a phosphate mine and two mineral processing plant complexes in northern Florida, six phosphate feed plants in the United States and one feed plant in Brazil. In addition, we can produce a variety of phosphate products at our Geismar, Louisiana facility.

Our nitrogen operations involve the production of nitrogen fertilizers and nitrogen feed and industrial products, including ammonia, urea, nitrogen solutions, ammonium nitrate and nitric acid. We have nitrogen facilities in Georgia, Louisiana, Ohio and Trinidad.

We indirectly hold all outstanding interests in PCS Joint Venture, Ltd. (“PCS Joint Venture”), a limited partnership doing business in Georgia as Farmer’s Favorite Fertilizer. Potash Corporation of Saskatchewan (Florida), Inc. is the general partner of PCS Joint Venture. PCS Joint Venture formerly manufactured, processed and distributed fertilizer and other agricultural supplies from plants located in Florida and Georgia. In 2006, PCS Joint Venture sold all of its Florida assets and shut down its Georgia manufacturing facility. PCS Joint Venture is selling its remaining inventory in Georgia.

We are organized under the laws of Canada. Our principal executive offices are located at 122 – 1 st Avenue South, Suite 500, Saskatoon, Saskatchewan, Canada S7K 7G3, and our telephone number is (306) 933-8500.

History

PCS is a corporation continued under the Canada Business Corporations Act and is the successor to a corporation without share capital established by the Province of Saskatchewan in 1975. Between 1976 and 1990, we acquired substantial interests in the Saskatchewan potash industry. We purchased the Cory mine in 1976, the Rocanville and Lanigan mines in 1977, and, by 1990, 100% of the Allan mine when we acquired all of the outstanding shares of Saskterra Fertilizers Ltd.

In 1989, the Province of Saskatchewan privatized PCS. While the Province initially retained an ownership interest in PCS, this interest had been reduced to zero by the end of 1993. Since 1993, we have made the following acquisitions of significance to the development of our Company:

• the New Brunswick potash mine and port facilities and our Patience Lake mine in Saskatchewan in 1993;

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• PCS Phosphate Company, Inc. (formerly Texasgulf Inc.) and White Springs Agricultural Chemicals, Inc., phosphate fertilizer and feed producers, in 1995; • Arcadian Corporation, a producer of nitrogen fertilizer, industrial and feed products, in 1997; • PCS Cassidy Lake, a potash mill facility located at Clover Hill, New Brunswick, in 1998; • approximately 9% of the outstanding shares of Israel Chemicals Ltd. (“ICL”) pursuant to a public offering by the State of Israel in 1998. In June 2005, we acquired twenty-one million additional shares in ICL, increasing our ownership interest to 10%; • PCS Purified Phosphates (formerly a joint venture we had with Albright & Wilson Americas Inc.), a phosphoric acid joint venture, in 2000; • 20% of the total outstanding equity of Sociedad Química y Minera de Chile S.A. (“SQM”), a Chilean specialty fertilizer, iodine and lithium company, in transactions in October 2001 and April and May of 2002. In 2004, we sold a portion of this investment and subsequently acquired ICL’s entire indirect interest in SQM, resulting in an indirect holding of 24.99% of the outstanding equity of SQM. In October and December 2006, we increased our investments in SQM, increasing our ownership interest to 31.62% of SQM’s outstanding equity; • 26% of the shares of Arab Potash Company (“APC”) from Jordan Investment Corporation, an arm of the Jordanian government, in October of 2003. In June 2005, we acquired one million additional shares in APC and in April 2006, we acquired 220,100 additional shares in APC, increasing our ownership interest to approximately 28%; and • 9.99% of the shares of Sinofert Holdings Limited (“Sinofert”), a vertically-integrated fertilizer company and a subsidiary of Sinochem Corporation, in July 2005. In February 2006, we exercised an option to acquire an additional 10.01% of the shares of Sinofert, increasing our ownership interest to 20%.
Potash Operations

Our potash operations include the mining and production of potash, which is predominantly used as fertilizer.

Properties

All potash produced by the Company in Saskatchewan is in the southern half of the Province, where extensive potash deposits are found. The potash ore is contained in a predominantly rock salt formation known as the Prairie Evaporite, which lies about 1,000 metres below the surface. The evaporite deposits, which are bounded by limestone formations, contain the potash beds of approximately 2.4 to 5.1 metres thickness. Three potash deposits of economic importance occur in the Province, the Esterhazy, Belle Plaine and Patience Lake Members. The Patience Lake Member is mined at the Lanigan, Allan, Patience Lake and Cory mines, and the Esterhazy Member is mined at the Rocanville and Esterhazy mines.

Under a mining and processing agreement effective through December 31, 2026 and subject to available reserves, Mosaic Potash Esterhazy Limited Partnership (“Mosaic”) mines and processes our mineral rights at the Esterhazy mine. We have the option to terminate this agreement every five years. The next opportunity to terminate is December 31, 2011, for which notice must be given no later than June 30, 2011. Mosaic has the option to abandon the mine at any time after December 31, 2011, thus terminating the mining and processing agreement. In each year the maximum finished product we are permitted to take under the mining and processing agreement is 952,500 tonnes and the minimum required amount is 453,600 tonnes. For the year ending December 31, 2007, we have notified Mosaic that we require 952,500 tonnes of finished product. Water inflow at the Esterhazy mine has continued, to a greater or lesser degree, since December 1985. In January 2007, Mosaic announced it had identified a new water inflow at the Esterhazy mine, and that efforts were underway to address the inflow. We share, on an annual basis, in such water inflow remediation costs at the Esterhazy mine. See “Production” and “Reserves” tables for additional information.

Also, under the mining and processing agreement with Mosaic, the Company has the right to acquire up to 25% participation in any expansion of the Esterhazy mine. In April, 2005, Mosaic announced plans to expand capacity at Esterhazy by 360,000 tonnes at a cost of $28 million. The Company participated in this expansion, investing 25% of the cost for 25% of the additional tonnage, on top of our current maximum annual entitlement of 952,500 tonnes. These new tonnes are expected to be available commencing in 2007.

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We also produce potash at our mine near Sussex, New Brunswick from the flank of an elongated salt structure. We also hold an interest in certain oil and gas rights in the vicinity of the New Brunswick mine. Natural gas has been discovered and we, in conjunction with Corridor Resources Inc., now supply the New Brunswick facility with natural gas to meet its fuel needs. During exploration for natural gas in the vicinity of the Sussex division, potash was detected to the south and east of the existing mine operations. Exploration permits were obtained, and enough detailed 3D seismic and drilling has taken place to delineate a potash resource large enough to warrant mine design and capital cost estimate studies. As part of our continued evaluation efforts, we commenced drilling of an additional borehole in December 2006.

We control the right to mine 646,835 acres of land in Saskatchewan. Included in these holdings are mineral rights to 540,079 acres contained in blocks around the six mines in which we have an interest, of which acres approximately 34% we own, approximately 52% are under lease from the Province of Saskatchewan and approximately 14% are leased from other parties. Our remaining 106,756 acres are located elsewhere in Saskatchewan. Our leases with the Province of Saskatchewan are for 21 year terms, renewable at our option. Our significant leases with other parties are also for 21 year terms. Such leases are renewable at our option, providing generally that production is continuing and that there is continuation of the applicable Crown lease. In New Brunswick, we mine pursuant to a mining lease with the Province of New Brunswick. We control the right to mine 58,263 acres of land in New Brunswick. The lease is for a term of 21 years from 1978 with renewal provisions for three additional 21 year periods. This lease was renewed effective June 13, 1999.

The following map shows the location of our Canadian mining operations and Esterhazy.

Production

We produce potash using both conventional and solution mining methods. In conventional operations, shafts are sunk to the ore body and mining machines cut out the ore, which is lifted to the surface for processing. In solution mining, the potash is dissolved in warm brine and pumped to the surface for processing. Approximately 12 grades of potash are produced to suit different preferences of the various markets.

In 2006, our conventional potash operations (excluding Esterhazy) mined 18.893 million tonnes of ore at an average grade of 23.11% potassium oxide (“K 2 O”). In 2006, our potash production from all our operations (including Esterhazy) consisted of 7.018 million tonnes of potash (“KCl”) with an average grade of 61.17% K 2 O, representing 47% of North American production.

Our present annual potash production capacity is approximately 12.89 million tonnes KCl, which includes maximum annual production under the mining and processing agreement with Mosaic of 952,500 tonnes at Esterhazy. In 2006, our production capacity represented an estimated 55% of the North American total capacity while our excess capacity was an estimated 70% of North American excess production capacity. We allocate production among our mines on the basis of various factors, including cost efficiency and the grades of product that can be produced. The Patience Lake mine, which was originally a conventional underground mine, now employs a

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solution mining method. The other Saskatchewan mines we own or in which we have an interest employ conventional underground mining methods.

The New Brunswick mine is a conventional cut and fill underground mining operation. In addition to potash production, this mine also produced 0.60 million tonnes of sodium chloride (salt) in 2006. We continue to incur costs at the New Brunswick division in relation to management of a brine inflow.

The following table sets forth, for each of the past three years, the production of ore, grade and finished product for each of our mines.
                                                                                         
 
    Annual                
    Capacity   2006 Production   2005 Production   2004 Production    
                     
    Finished       Finished       Finished       Finished    
    Product   Ore       Product   Ore       Product   Ore       Product    
    (Millions   (Millions   Grade   (Millions   (Millions   Grade   (Millions   (Millions   Grade   (Millions    
    of tonnes)   of tonnes)   % K2O   of tonnes)   of tonnes)   % K2O   of tonnes)   of tonnes)   % K2O   of tonnes)    
                                                 
    Lanigan     3.828       5.416       20.16       1.471       7.439       20.33       2.023       7.372       20.11       2.025      
    Rocanville     3.044       5.675       23.99       1.897       7.519       24.70       2.573       5.334       24.25       1.833      
    Allan     1.885       2.984       25.14       0.992       4.323       24.19       1.431       3.862       25.22       1.344      
    Cory     1.361       2.545       25.12       0.772       2.753       24.90       0.826       2.531       24.95       0.738      
    Patience Lake(1)     1.033                   0.190                   0.251                   0.239      
    Esterhazy(2)     0.953                   0.953                   0.953                   0.953      
    New Brunswick     0.785       2.273       23.03       0.743       2.284       23.37       0.759       2.371       23.24       0.782      
                                                                     
    Totals     12.889       18.893               7.018       24.318               8.816       21.470               7.914      
                                                                     
 


  (1) Solution mine.     (2) Product tonnes received at Esterhazy are based on a mining and processing agreement with Mosaic.  
The mining of potash is a capital-intensive business subject to the normal risks and capital expenditure requirements associated with mining operations. The processing of ore may be subject to delays and costs resulting from mechanical failures and such hazards as unusual or unexpected geological formations, subsidence, floods and other water inflows, and other conditions involved in mining ore.

Reserves

The Company’s estimates for its conventional mining operations in Saskatchewan are based on exploration drill hole data, seismic data and actual mining results during the past 36 to 41 years. In Saskatchewan reserves are estimated by identifying material in place that is delineated on at least two sides and material in place within one mile from an existing sampled mine entry or borehole. The Company’s estimates for its conventional mining operations in New Brunswick are based on exploration drill hole data, seismic data and actual mining results during the past 23 years. In New Brunswick reserves are estimated by identifying material in place delineated by drilling or mining with results projected conservatively from these intersections.

A historical extraction ratio from the 23 to 41 years of mining results is applied to estimate the mineable reserves. The Company’s estimated recoverable ore (reserve tonnage only) as of December 31, 2006 for each of our potash mines is as follows:
                                 
 
    Mineral Reserves   Average    
    (Millions of tonnes   Grade   Years of Remaining    
    recoverable ore)(1)(2)(3)   K2O   Mine Life(4)    
                     
    Allan     288       25.9%       77      
    Cory     209       25.1%       80      
    Lanigan     427       22.0%       63      
    Rocanville     382       22.5%       62      
    Patience Lake(5)                      
    Esterhazy(6)     21       24.5%       7      
    New Brunswick     71       25.6%       30      
 


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  (1) Mineral reserves include proven and probable reserves. There has been no third party review of reserve estimates within the last three years. Current estimates reflect refinements and adjustments to the analysis conducted during 2006 using methodology described in the body of this report.     (2) The extraction ratio of recoverable ore to in-place material for each mine is as follows: Allan 0.32, Cory 0.26, Lanigan 0.30, Rocanville 0.33 and New Brunswick 0.46.     (3) The concentration of recoverable ore tonnes to finished product (KCl) for each of the divisions is as follows (three-year running average): Allan 2.96, Cory 3.35, Lanigan 3.67, Rocanville 2.94 and New Brunswick 3.03.     (4) Estimates are based upon proven and probable reserves and annual mining rates (million tonnes of ore hoisted per year) equal to the three-year running average for each of the divisions as follows: Allan 3.72, Cory 2.61, Lanigan 6.74, Rocanville 6.18 and New Brunswick 2.31. Mining rates are constrained by the equipment and manpower we utilize at each mine so that our production capacity at each mine depends, in part, on the ore concentration ratio encountered at each mine.     (5) Given the characteristics of the solution mining method employed at the Patience Lake mine, it is not possible to estimate reliably the productive capacity of or the recoverable ore reserve from this operation. In solution mining, the potash is dissolved in warm brine and pumped to the surface for processing. Chemical compositions and volumes of brine pumped into and out of the underground mineralized zone are known, but the precise nature of the solution mining process is not. Estimates are made utilizing the surfaces available for dissolution in the abandoned mine workings, the concentration of the circulated brine recovered from the mine, annual crystallization rates in the ponds and the annual volume of KCl recovered from the ponds. However, this inability to properly describe details of the mining process precludes reporting of an ore reserve for Patience Lake. The extent of the Patience Lake potash resource is given in the next table. The Patience Lake operation accounted for only 2.7% of the Company’s potash production in 2006.     (6) At Esterhazy, mine operator Mosaic mines potash for which the Company holds mineral rights. Production is carried out under a mining and processing agreement with Mosaic. The Esterhazy mineral reserve tonnage presented here is the current estimate of mineable tonnes remaining in the Company’s lands after reconciliation of historic tonnes mined and product received from Mosaic. Lands agreed to be not mineable by both Mosaic and the Company have been removed. Since the tonnage of product to be received by the Company is based on an agreement with Mosaic, the entire tonnage available is placed in the “Mineral Reserves (Millions of tonnes recoverable ore)” category. The “Years of Remaining Mine Life” reported for Esterhazy assumes that the maximum amount of product possible under the agreement, exclusive of participation in the proposed expansion of the Esterhazy mine discussed above, will be received by the Company.  
Resources

Mineral resources, which are exclusive of the mineral reserves reported above, are contained within the lands for which a mining lease is held at each mine. Note that the resources are reported as mineralization in-place while the reserves are reported as recoverable ore.

In Saskatchewan, where geological correlations are straightforward, the mineral resource categories are interpreted by the Company as follows:

• areas with detailed exploration coverage (drilling, seismic, close to underground workings) are reported in the measured mineral resource category; • areas with sparse exploration coverage (usually seismic coverage only) and far from underground workings are reported in the indicated mineral resource category; • areas with limited exploration coverage, but still within the mining lease, are reported in the inferred mineral resource category.
Exploration information used to infer and compute resource tonnage estimates for Saskatchewan consists of physical sampling (boreholes) and surface seismic data (3D and 2D).

In New Brunswick, where geology is complex, mineral resource categories are interpreted by the Company as follows:

• areas with many drillhole intersections within a seismically defined area and with consistent stratigraphy, mineralogy and potash quality are reported in the measured mineral resource category; • areas with fewer drill intersections within a seismically defined area, or with structurally modified (folded) and less consistent mineralogy, but still exhibiting good quality potash intersections, are reported in the indicated mineral resource category;

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• areas with sparse drilling, complex geology, partial seismic coverage and/or inconsistent potash quality in drill intersections are reported in the inferred mineral resource category.
Exploration information used to infer and compute resource tonnage estimates in New Brunswick consists of physical sampling (boreholes and regional surface mapping), surface seismic data (3D and 2D), airborne electromagnetic and regional gravity data.

The Company’s estimated mineral resource tonnage as of December 31, 2006 for each of our mines is as follows: