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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

FOR ANNUAL AND TRANSITION REPORTS PURSUANT TO
SECTIONS 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

(Mark One)
[x] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended June 30, 1998
OR
[ ] TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
For the transition period from ____________ to ____________

Commission File Number 0-20411

MISSISSIPPI CHEMICAL CORPORATION
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(Exact name of registrant as specified in its charter)


MISSISSIPPI 64-0292638
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(State or other jurisdiction of (IRS Employer
incorporation or organization) Identification Number)

Highway 49 East, P.O. Box 388,
Yazoo City, MS 39194
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(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code: (601) 746-4131
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Securities registered pursuant to Section 12(b) of the Act:

Title of each class Name of each exchange on which registered
- ------------------------------- -----------------------------------------
Common Stock, par value $.01 New York Stock Exchange
Preferred Stock Purchase Rights New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------

Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 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 [ ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ ]

At September 2, 1998, Mississippi Chemical Corporation had 26,999,785 shares of
common stock, par value $0.01, outstanding. The Company estimates that the
aggregate market value of the common stock on September 2, 1998 (based upon the
closing price of the common stock on the New York Stock Exchange), held by
nonaffiliates was approximately $345,134,735.
- --------------------------------------------------------------------------------
DOCUMENTS INCORPORATED BY REFERENCE
Annual Report to Shareholders for fiscal year ended June 30, 1998 (Item 1 in
Part I; Items 5, 6, 7, 7A and 8 in Part II; and Item 14 in Part IV).

Proxy Statement for Annual Meeting of Shareholders to be held on November 10,
1998 (Items 10, 11, 12 and 13 in Part III).

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PART I

ITEM 1. BUSINESS

Mississippi Chemical Corporation (the "Company") was incorporated in
Mississippi on May 23, 1994, and is the successor by merger, effective July 1,
1994, to a business which was incorporated in Mississippi in September 1948 as
the first fertilizer cooperative in the United States (the "Cooperative"). The
address of the Company's principal executive office is Owen Cooper
Administration Building, Highway 49 East, Yazoo City, Mississippi 39194, and its
telephone number is (601) 746-4131. The Company maintains a site on the World
Wide Web at www.misschem.com. The term "Company" includes Mississippi Chemical
Corporation and its wholly owned subsidiaries, Mississippi Phosphates
Corporation; Mississippi Potash, Inc.; Eddy Potash, Inc.; Triad Nitrogen, Inc.;
Triad Fertilizer, Inc.; TNI, Inc.; Triad Barge, Inc.; TNI Barge, Inc.; MCC
Investments, Inc.; NSI Land Corporation; Mississippi Chemical Management
Company; and Mississippi Chemical Company, L.P. References to the Company's
operations prior to July 1, 1994, refer to the Cooperative's operations.

The principal business of the Cooperative was to provide fertilizer products
to its shareholders pursuant to preferred patronage rights that gave the
shareholders the right to purchase fertilizer products and receive a patronage
refund on those purchases. On June 28, 1994, the shareholders of the
Cooperative approved a plan of reorganization (the "Reorganization"), pursuant
to which the Cooperative was merged into the Company. As a result of the
Reorganization, the capital stock of the Cooperative was converted into common
stock and/or cash, and the Company began to operate as a regular business
corporation.

In August 1996, the Company entered into an agreement to acquire the
fertilizer businesses of First Mississippi Corporation ("First Mississippi") in
an all-stock merger transaction. The transaction was completed on December 24,
1996. The First Mississippi fertilizer operations primarily included AMPRO
Fertilizer, Inc. ("AMPRO"), and a 50 percent interest in Triad Chemical, both
located on contiguous property at Donaldsonville, Louisiana. The Company
already held the remaining 50 percent interest in Triad Chemical. Since closing
of the transaction, the Company merged AMPRO into, and contributed its 50
percent interest in Triad Chemical to, First Mississippi and changed the name of
First Mississippi to Triad Nitrogen, Inc. ("Triad Nitrogen").

In August 1996, the Company, through two subsidiaries of its wholly owned
subsidiary Mississippi Potash, Inc., acquired substantially all of the assets
(including the right to use the corporate names) of New Mexico Potash
Corporation and Eddy Potash, Inc. ("Eddy Potash"), from Trans-Resources, Inc.
Since the acquisition, New Mexico Potash Corporation has been merged into
Mississippi Potash, Inc. Eddy Potash, which operated as a wholly owned
subsidiary of Mississippi Potash, Inc., suspended its mining and production
operations on December 3, 1997. The Company is currently evaluating alternative
methods of mining the Eddy Potash reserves. The original mine and refinery
owned by Mississippi Potash, Inc., is now known as the "West Facility," and the
former New Mexico Potash Corporation mine is known as the "East Facility."

NITROGEN

Products

The Company produces nitrogen products at its production facilities in Yazoo
City, Mississippi, and Donaldsonville, Louisiana. The Company's principal
nitrogen products include ammonia; fertilizer-grade ammonium nitrate, which is
sold under the Company's trade name Amtrate(R); UAN

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solutions, which are sold under the Company's trade name N-Sol; urea; and nitric
acid. In fiscal 1998, the Company sold approximately 2.5 million tons of
nitrogen products to farmers, fertilizer dealers and distributors, and
industrial users located primarily in the southern United States. Sales of
nitrogen products by the Company in fiscal 1998 were $298.6 million, which
represented approximately 57 percent of net sales.

Although, to some extent, the Company's various nitrogen products are
interchangeable for agricultural purposes, each has its own distinct
characteristics that produce agronomic preferences among end-users. Farmers
determine which nitrogen product to apply based on the crop planted, soil and
weather conditions, regional farming practices, and relative prices for nitrogen
products.

AMMONIA. The basic nitrogen product is anhydrous ammonia, which is a
necessary raw material for the production of the Company's other nitrogen
products. Anhydrous ammonia, which is 82 percent nitrogen, is the most
concentrated nitrogen product available. It is synthesized as a gas under high
temperature and pressure. The raw materials used to produce anhydrous ammonia
are natural gas, atmospheric nitrogen, and steam.

In fiscal 1998, the Company produced approximately 1,543,000 tons of
anhydrous ammonia at its Yazoo City and Donaldsonville facilities. The Company
sold approximately 644,000 tons of anhydrous ammonia as a raw material for
industrial users and 4,000 tons as a primary fertilizer for direct application
to crops. The balance of the anhydrous ammonia was consumed by the Company as a
raw material to manufacture its other nitrogen products.

AMMONIUM NITRATE. The Company is the largest manufacturer and marketer of
high-density ammonium nitrate fertilizer in the United States. Ammonium
nitrate, which is 34 percent nitrogen, is produced by reacting anhydrous ammonia
and nitric acid. Ammonium nitrate is less subject to volatilization
(evaporation) losses than other nitrogen products. Due to its stable nature,
ammonium nitrate is the product of choice for such uses as pastures and no-till
row crops where fertilizer is spread upon the surface and is subject to
volatilization losses. Although the consumption of ammonium nitrate in the
United States has been stable in recent years, the use of conservation tillage,
which reduces soil erosion, is increasing in the United States and should have a
positive impact on ammonium nitrate demand.

In fiscal 1998, the Company sold approximately 765,000 tons of solid ammonium
nitrate fertilizer, all of which was produced at the Company's Yazoo City
facility. The ammonium nitrate produced at the Company's Yazoo City facility is
sold under the registered trade name Amtrate(R). Due to its superior shipping
and storage characteristics, Amtrate(R) has established excellent brand name
recognition and a reputation as a high-quality product.

UAN SOLUTIONS. In fiscal 1998, the Company sold approximately 485,000 tons
of UAN solutions, which it produced at its Yazoo City facility and sold under
the trade name N-Sol. N-Sol is a 32 percent nitrogen product that is made by
mixing urea liquor and ammonium nitrate liquor. N-Sol is used as a direct
application product for cotton, corn, grains, and pastures, as well as for use
in liquid fertilizer blends. Over the past 20 years, there has been a
substantial increase in the use of UAN solutions as a part of the overall growth
in the agricultural consumption of nitrogen products in the United States.

UREA. In fiscal 1998, the Company sold approximately 366,000 tons of prilled
urea and approximately 149,000 tons of urea melt, which it produced at its
Donaldsonville facility. Urea is synthesized by the reaction of ammonia and
carbon dioxide and then solidified in prill form. At

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46 percent nitrogen by weight, urea is the most concentrated form of dry
nitrogen. Because urea undergoes a complex series of changes within the soil
before the nitrogen it contains is ultimately converted into a form that can be
used by plants, it is considered a long-lasting form of nitrogen. As a
fertilizer product, urea is acceptable as both a direct-application material and
as an ingredient in fertilizer blends. Urea consumption has increased modestly
in recent years. Most of the Company's prilled urea that is sold to the
agricultural market is broadcast on rice and winter wheat crops in Arkansas,
Louisiana, Mississippi, Oklahoma, and Texas. Approximately 44 percent of the
Company's prilled urea sales are to industrial users and manufacturers of animal
feeds. Under a long-term contract with Melamine Chemicals, Inc. ("Melamine"),
that became effective on July 1, 1997, and replaced a previous long-term
commitment with Melamine, the Company is obligated to sell up to 210,000 tons
per year of urea melt at a market-related price to Melamine's facility located
adjacent to the Triad Nitrogen facility. Melamine's urea melt requirements,
coupled with the Donaldsonville facility's ability to only prill 460,000 tons on
an annual basis, determine the Company's annual production figures for prilled
urea and urea melt.

NITRIC ACID. In fiscal 1998, the Company sold 57,000 tons of nitric acid
produced at its Yazoo City facility to industrial users and used the balance of
nitric acid produced in fiscal 1998 as a raw material for the production of
Amtrate(R). The Yazoo City facility produces more nitric acid than any other
U.S. facility. Nitric acid is used to produce end products such as nylon
fibers, polyurethane foams, rubber chemicals and specialty fibers. Because of
the addition of a new 650-ton-per-day nitric acid plant at the Yazoo City
facility, completed in March 1998, the Company expects to sell a greater amount
of nitric acid in fiscal 1999.

PRODUCTION AND PROPERTIES

YAZOO CITY, MISSISSIPPI. The Yazoo City facility is a closely integrated,
multiplant production complex located on approximately 1,180 acres. The complex
includes two anhydrous ammonia plants, five nitric acid plants, an ammonium
nitrate plant, two urea plants, and a UAN solutions plant. One of the nitric
acid plants and the second ammonia plant were added through an ongoing expansion
project which is estimated to cost approximately $130 million. The 650-ton-per-
day nitric acid plant became operational in March 1998, while the 500-ton-per-
day ammonia plant is scheduled to be operational in October 1998. The addition
of the new nitric acid plant has increased the Company's annual nitric acid
production capacity to approximately 1,025,000 tons and its annual ammonium
nitrate production capacity to approximately 900,000 tons. The Company is also
planning to make certain modifications to the ammonium nitrate plant, which are
estimated to be completed by the end of fiscal 2000, and are expected to add an
additional 50,000 tons of capacity. The addition of the new ammonia plant will
increase the annual ammonia production capacity of the Yazoo City facility to
710,000 tons, while the Company's annual UAN solution production capacity will
remain at 550,000 tons.

The Yazoo City facility includes a 20.5 megawatt cogeneration facility that
produces significant savings by the sequential generation of electricity and
steam. The Yazoo City plant has direct access to water, rail, and truck
transportation and is strategically located for the purchase of competitively
priced natural gas. See "Raw Materials--Natural Gas."

DONALDSONVILLE, LOUISIANA. The Triad Nitrogen facility is a closely
integrated, multiplant nitrogen complex located on approximately 740 acres
fronting the Mississippi River at Donaldsonville, Louisiana, which produces
anhydrous ammonia and urea. The facility includes two anhydrous ammonia plants
with a combined annual production capacity of 1,080,000 tons and a urea plant
with an annual production capacity of approximately 560,000 tons.

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The Triad Nitrogen facility has ready access to rail, truck, and ammonia
pipeline transportation. The plant also is equipped with a deep-water port
facility on the Mississippi River, allowing access to economical oceangoing
vessel and barge transportation for its urea and ammonia products. The facility
is well-positioned for the purchase of competitively priced natural gas. See
"Raw Materials--Natural Gas."

TRINIDAD. In December 1994, the Company entered into a 50-50 joint venture
with Farmland Industries, Inc., known as Farmland MissChem Limited ("Farmland
MissChem") to construct and operate a 2,040-short-ton-per-day ammonia plant to
be located near Point Lisas, The Republic of Trinidad and Tobago. Construction
of the facility is complete, and the ammonia plant began producing commercial
quantities in July 1998. The Company is obligated by contract to purchase one-
half of the ammonia (approximately 350,000 tons per year) produced by the plant
at a purchase price that approximates market price, but is subject to an agreed-
upon floor price. The Company is currently using its portion of the production
from the new facility as a raw material for upgrading into finished fertilizer
products at its existing facilities and to meet its contractual commitments to
certain industrial customers.

OTHER. The Company also owns 11 ammonia barges and a 50 percent interest in
an ammonia storage terminal in Pasadena, Texas.

MARKETING AND DISTRIBUTION

The Company sells its nitrogen products to farmers, dealers, and
distributors, as well as industrial users, located primarily in the southern
region of the United States where its facilities are located. Although the
Company has traditionally sold the great majority of its nitrogen products
through the agricultural fertilizer distribution chain, an increasing amount of
nitrogen product is being sold to industrial users in order to reduce the
Company's exposure to the seasonal nature of the agricultural fertilizer
markets.

In the fertilizer distribution chain, distributors operate as wholesalers
supplying dealers who, in turn, sell directly to farmers. Larger customers
(distributors and large multilocation dealers) arrange for distribution,
storage, and financing of nitrogen products. The majority of the Company's
sales are made to distributors and large dealers in the Company's primary trade
area. The ten states that make up the Company's primary trade area are
Mississippi, Texas, Alabama, Louisiana, Tennessee, Georgia, Kentucky, Arkansas,
Missouri and Florida.

The Company maintains a field sales force strategically located throughout
the southern United States. The sales force attempts to maintain close
communications with the customer base and plays an important role in the
marketing and distribution of the Company's products. Through regular, personal
contact with its customers, the Company believes it is able to ascertain local
demand for fertilizer products and supply the customer's fertilizer requirements
in the most cost-effective manner. The Company's sales force is also able to
identify specific customer service needs that the Company can meet. Customer
service and support helps differentiate the Company's products and enhance its
position as a preferred supplier.

The Company transports its nitrogen products by barge, rail, pipeline, truck
and oceangoing vessels. The Company's distribution network includes the
recently purchased 11 ammonia barges, numerous trucks and a pipeline that pumps
UAN solution from its Yazoo City plant to its Yazoo River port facility, along
with owned or leased warehouses and terminals that are strategically placed in
high-consumption areas. The Company's distribution network has been recently
strengthened through

5


the establishment with Farmland Industries, Inc., of a 50-50 joint venture, FMCL
Limited Liability Company ("FMCL"), to arrange for the transportation of ammonia
from the Farmland MissChem Trinidad facility to the United States and other
world markets. FMCL has executed two long-term time charter agreements for
oceangoing vessels with a European shipowner. Both agreements establish a fixed
charter rate for the vessels during the entire time that the agreements are in
effect. The Company believes that the time charter agreements provide a hedge
against unfavorable fluctuations in shipping rates and will be a cost-effective
method of transporting its Trinidad product.

PHOSPHATE

PRODUCTS

The Company produces diammonium phosphate fertilizer ("DAP") at its facility
in Pascagoula, Mississippi. In fiscal 1998, the Company sold approximately
726,000 tons of DAP. Sales of DAP by the Company in fiscal 1998 were $127.7
million, which represented approximately 25 percent of net sales.

DAP is the most common form of phosphate fertilizer. DAP is produced by
reacting phosphate rock with sulfuric acid to produce phosphoric acid, which is
then combined with ammonia. DAP contains 18 percent nitrogen and 46 percent
phosphate (P205) by weight. DAP is an important fertilizer product both for
direct application and for use in blended fertilizers applied to all major types
of row crops.

PRODUCTION AND PROPERTIES

The Company's phosphate production complex in Pascagoula, Mississippi, is
located on approximately 1,500 acres. The Pascagoula facility is a closely
integrated, multiplant phosphatic fertilizer complex where the primary
facilities are a phosphoric acid plant, two sulfuric acid plants, and a DAP
granulation plant. The plant has storage facilities for finished product
(80,000 tons), as well as for the primary raw materials, phosphate rock (100,000
tons), sulfur (10,000 tons), and ammonia (25,000 tons). All of the phosphate
rock used by the Company is purchased pursuant to a single supply contract with
Office Cherifien des Phosphates ("OCP"), the national phosphate company of
Morocco. See "Raw Materials--Phosphate Rock."

The plant site fronts a deep-water channel that provides direct access to the
Gulf of Mexico. The complex contains docks and off-loading facilities for
receiving shipload quantities of phosphate rock, sulfur, and ammonia and for
out-loading DAP. The plant's location on deep water provides the Company with
an outbound freight cost advantage over central Florida DAP producers with
respect to international shipments and domestic shipments along the Mississippi
River system.

Construction of a new phosphogypsum disposal facility at Pascagoula was
substantially completed on June 30, 1998 at an estimated cost of $18 million.
In April 1998, an expansion of the Company's diammonium phosphate manufacturing
facilities at Pascagoula was completed at an estimated cost of $13 million.
This project increased annual production capacity from approximately 720,000 to
approximately 900,000 tons per year and increased DAP storage capacity from
approximately 40,000 to 80,000 tons.

MARKETING AND DISTRIBUTION

On September 30, 1997, the Company terminated its exclusive DAP marketing
arrangement with Atlantic Fertilizer & Chemical Corporation ("Atlantic") and
became a member of the Phosphate

6


Chemicals Export Association, Inc., a Webb-Pomerene corporation known as
PhosChem, effective October 1, 1997. Since October 1, 1997, all of the Company's
export sales of DAP have been made through PhosChem, and all domestic sales of
DAP have been made through the Company's sales staff.

In fiscal 1998, approximately 70 percent of the Company's DAP was sold into
international markets through Atlantic and PhosChem. The largest export markets
in fiscal 1998 were China, India and countries in Central and South America.
Most domestic sales are made in barge-lot quantities to major fertilizer
distributors and dealers located on the Mississippi River system. The vast
majority of the Company's DAP is transported by ship and barge, although truck
and rail access is also available.

POTASH

Products

The Company produces potash at two mines and related facilities near
Carlsbad, New Mexico. In fiscal 1998, the Company sold approximately 1,022,000
tons of potash, primarily in granular form. These sales were predominately to
customers located west of the Mississippi River. Sales of potash products by
the Company in fiscal 1998 were $91.7 million, which represented approximately
18 percent of net sales.

The Company's potash is mined from subterranean salt deposits containing a
mixture of potassium chloride and sodium chloride. The Carlsbad, New Mexico,
potash deposits are located from 800 to 1,200 feet below the surface. Potash is
produced in a refining process by which the potassium chloride is separated from
the sodium chloride.

The three principal grades of potash fertilizer are granular, coarse, and
standard, with granular being the largest particle size. Potash is an important
fertilizer product for both direct application and for use in blended
fertilizers applied to all types of crops. Granular potash is used as a direct-
application fertilizer and, among the various grades, is particularly well
suited for use in fertilizer blends. In addition, the Company produces several
grades of potash that are purchased as a raw material by industrial users.

PRODUCTION AND PROPERTIES

Prior to the August 1996 acquisition, the Company operated only the West
Facility, consisting of a potash mine and refinery located approximately 25
miles east of Carlsbad, New Mexico. This mine supplies ore to an above-ground
refinery that separates the potassium chloride from the ore. The run-of-mine
refined product is then transported to the Company's nearby compaction plant for
conversion to granular form. Located contiguous to the compaction facility are
storage and shipping facilities from which the finished product is transported
by rail and truck into domestic and export markets.

The West Facility produced approximately 440,000 tons of red granular potash
in fiscal 1998. In April 1998, the Company announced its plans for an expansion
project that will increase the West Facility's annual red granular production
capacity from approximately 445,000 tons to approximately 545,000 tons, as well
as increase potash storage capacities by 30,000 tons. The Company estimates
total cost of the expansion to be $8.2 million and expects the project to be
completed by the end of fiscal 1999.

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The East Facility, located near Carlsbad, New Mexico, produced approximately
467,000 tons of white potash in fiscal 1998 that was ultimately sold in
standard, coarse and granular forms to both agricultural and industrial users.

On December 3, 1997, the Company suspended the plant operations of Eddy Potash
due to the fact that the depletion of the higher-grade ore zone rendered the
continued operation of conventional mining methods at Eddy Potash uneconomical.
The Company continues to evaluate alternative mining methods for the Eddy Potash
reserves.

Upon completion of the West Facility expansion project, the Company will have
in excess of 1.1 million tons of combined potash capacity annually from its two
operating mines. At current production rates, the Company's combined reserves
at the East and West Facilities have a remaining life of several decades.

The Company's potash reserves are controlled under long-term federal and state
potassium leases on approximately 138,000 acres. The estimates of potash ore
reserves are calculated using the latest bore hole data and sophisticated
modeling programs. According to the latest model completed in August 1998, the
Company's total reserves are estimated to be 600 million tons with an average
grade of 15.33% K2O. The recoverable reserves are estimated to be 538 million
tons at a grade of 15.07% K2O. This reserve base is estimated to be equivalent
to approximately 105 million tons of muriate of potash. Eddy Potash's reserves
are excluded since these estimates include only the reserves which can be
economically recovered by conventional mining techniques.

MARKETING AND DISTRIBUTION

The majority of the Company's agricultural potash sales are in domestic
markets in the states west of the Mississippi River where it and other Carlsbad
potash producers enjoy freight cost advantages over Canadian and overseas potash
producers. Consistent with the Company's strategy to maximize "net backs"
(sales less distribution and delivery expense) and increase profit margins,
domestic sales are targeted for locations along the freight route of the
Burlington Northern Santa Fe Railroad. Domestic potash marketing is coordinated
from a sales office located in Dallas, Texas, with a field sales force located
in Texas, Louisiana, Arkansas, Mississippi and California. Approximately 22
percent of the Company's fiscal 1998 potash sales were to international markets.
The Company's export sales are made through Potash Corporation of Saskatchewan
Sales Limited. The majority of fiscal 1998 export sales were to Latin America,
Mexico, and Brazil. Potash for export is transported by rail to terminal
facilities on the Texas Gulf Coast, where it is loaded onto ocean-going vessels
for shipment.

RAW MATERIALS

Natural Gas

Natural gas is the primary raw material used by the Company in the
manufacture of nitrogen products. Natural gas is used both as a chemical
feedstock and as a fuel to produce anhydrous ammonia that is then upgraded into
other nitrogen products. During fiscal 1998, the cost of natural gas
represented approximately 75 percent of the Company's cost of producing ammonia.
Because there are no commercially feasible alternatives for natural gas in the
production of ammonia, the economic success of the Company's nitrogen business
depends upon the availability of competitively priced natural gas.

In today's natural gas market, the Company's total delivered natural gas cost
generally consists of two components--the market price of the natural gas in the
producing area at the point of delivery into a

8


pipeline and the fee charged by the pipeline for transporting the natural gas to
the Company's plants. The cost of the transportation component can vary
substantially depending on whether or not the pipeline has to compete for the
business. Therefore, it is extremely important to the Company's competitiveness
that it have access to multiple natural gas sources and transportation services.
In addition to the impact on transmission costs, access alternatives enable the
Company to benefit from natural gas price differences that may exist from time
to time in the various natural gas-producing areas. In recent years, the Company
has improved the natural gas-purchasing logistics of its nitrogen facilities.

The natural gas requirements of the Yazoo City facility will increase from
approximately 57,000 Mcf per day to approximately 72,000 Mcf per day upon the
start-up of the new ammonia plant. Since 1996, the Company has received the
majority of its natural gas requirements for the Yazoo City facility from Sonat
Marketing Company ("Sonat"), an affiliate of Southern Natural Gas Company
("Southern"). In order to secure the incremental gas requirements created by
the addition of the new ammonia plant, the Company renegotiated its agreement
with Sonat. The new agreement with Sonat, which became effective on May 15,
1998, allows for the firm delivery of gas, at market-related prices, through the
Yazoo City facility's direct connections to the interstate pipeline systems
operated by Southern and Texas Eastern Transmission Corporation ("TETCO"). The
TETCO connection was completed in November 1997, and Sonat began to flow gas
through the connection in April 1998. Pursue Energy Corporation ("Pursue")
continues to be another major natural gas supplier of the Yazoo City facility
from its reserves located in Rankin County, Mississippi. In addition, the
Company's 60-mile, 12-inch-diameter natural gas pipeline provides the plant with
direct access to the Pursue reserves, along with low-cost transportation of the
Pursue gas; direct access to an additional interstate pipeline; and direct
access to a large intrastate gathering and transmission system in southern
Mississippi. As a result of this access to multiple sources, the Company
benefits from competition for the transportation and supply of natural gas.

Natural gas requirements for the Triad Nitrogen facility are approximately
107,000 Mcf per day. The Triad Nitrogen facility is located in one of the
primary gas-producing regions of the United States. The facility is currently
connected to five intrastate pipeline systems and benefits from intense
competition among the many suppliers that have transport capabilities on the
intrastate lines. The majority of current natural gas requirements are being
supplied under fixed-term contracts with Louisiana Gas Marketing Company, a
subsidiary of Enron Corp.; Amoco Energy Trading Corporation; Noble Gas
Marketing, Inc.; NorAm Energy Services, Inc.; and Coral Energy Resources, L.P.
These contracts provide for market sensitive pricing and firm delivery supply
commitments. The remaining requirements continue to be supplied via spot market
30-day purchases.

As a result of favorable access to natural gas supplies at the Yazoo City and
Triad Nitrogen facilities, the Company believes that the loss of any particular
supplier would not have a material impact on plant operations at either
location. There have been no significant supply interruptions at either
location.

Relative to fiscal 1997 levels, the Company's delivered cost of natural gas
decreased approximately 1.5 percent. Although long-term natural gas supplies
appear adequate to meet projected demand, gas prices can be influenced
significantly by short-term fundamentals such as weather, storage levels, gas
transportation interruptions, and competing fuel prices. The Company uses
natural gas futures contracts to hedge against the risk of market fluctuations
in the cost of natural gas.

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PHOSPHATE ROCK

Phosphate rock is one of the primary raw materials used in the manufacture of
DAP. The Pascagoula facility's requirements for phosphate rock after its recent
production expansion are approximately 1.5 million tons per year. On
September 15, 1991, the Company entered into a ten-year contract with OCP to
supply all of the phosphate rock requirements of the Pascagoula facility. The
term of this contract has been extended to June 30, 2016. OCP, the national
phosphate company of Morocco, is the world's largest producer and exporter of
phosphate rock and upgraded phosphates as a company. The contract price for
phosphate rock is based on phosphate rock costs incurred by certain domestic
competitors of the Company and on the operating performance of the Company's
phosphate operations. Under this formula, the Company realizes favorable
phosphate rock prices and is afforded significant protection during periods when
market conditions are depressed. Conversely, in favorable markets, when the
Company's DAP operations are profitable, the contract price of phosphate rock
will escalate based on the profitability of its DAP operations. Pursuant to this
contract, the Company and OCP are required to negotiate further adjustments as
needed to maintain the viability and economic competitiveness of the Pascagoula
plant. The strategic alliance with OCP has functioned effectively since
inception, and the Company considers its relations with OCP to be good.

SULFUR

Sulfur is used in the manufacture of sulfuric acid at the Pascagoula plant.
Sulfur is in adequate supply and is available on the open market in quantities
sufficient to satisfy the Company's current requirements, which have increased
to approximately 330,000 tons per year as a result of the Pascagoula plant
expansion. The location of the Company's plant at Pascagoula, Mississippi, near
major oil and gas fields that supply substantial amounts of sulfur, provides the
Company with a strategic advantage in the purchase of sulfur over its Florida
competitors.

AMMONIA

Ammonia is a necessary raw material for production of the Company's other
nitrogen products and DAP. The Company supplied the great majority of its
ammonia requirements in fiscal 1998. Third-party ammonia purchases by the
Company in fiscal 1998 were only 118,000 tons. It is anticipated that the
Company's third-party ammonia purchases in fiscal 1999 will be even less due to
the addition of the Trinidad plant and the new ammonia plant at the Yazoo City
facility.

COMPETITION

Since fertilizers are global commodities available from numerous sources,
fertilizer suppliers compete primarily on the basis of delivered price. Other
competitive factors include product quality, customer service, and availability
of product. In each product category, the Company competes with a broad range
of domestic producers, including farmer cooperatives, subsidiaries of larger
companies, integrated energy companies, and independent fertilizer companies.
Many of the Company's domestic competitors have larger financial resources and
sales than the Company. The Company also competes with foreign producers.
Foreign competitors are often owned or subsidized by their governments and, as a
result, may have cost advantages over domestic companies. Additionally, foreign
competitors are frequently motivated by nonmarket factors such as the need for
hard currency.

The Company produces and sells its nitrogen products primarily in the southern
United States. However, dealers and distributors located in this region re-
market a substantial quantity of these nitrogen products to end-users outside of
the southern United States. Because competition is based largely on the

10


delivered price, maintaining low production costs is critical to
competitiveness. Natural gas comprises the vast majority of the raw materials
cost of its nitrogen products. Competitive natural gas purchasing is essential
to maintaining the Company's low-cost position. Equally important is efficient
use of this gas because of the energy-intensive nature of the nitrogen business.
Therefore, cost-competitive production facilities that allow flexible upgrading
of ammonia to other finished products are critical to a low-cost competitive
position. In the highly fragmented nitrogen market, product quality and customer
service also can be sources of product differentiation.

The Company sells over two-thirds of its DAP in international markets. The
U.S. phosphate industry has become more concentrated as a result of recent
consolidations and joint ventures, and the Company is smaller than most of its
competitors in terms of resources and sales. Most of the Company's principal
competitors have captive sources of some or all of the raw materials, and this
may provide them with cost advantages. The Company's long-term phosphate rock
contract with its flexible pricing mechanism is a key element to the Company's
ability to compete.

Most potash consumed in the United States is provided by large Canadian
producers who have economies of scale and lower variable costs than their U.S.
counterparts. Over 80 percent of U.S. potash production capacity is located in
the Carlsbad, New Mexico, area. While the Carlsbad producers have higher mining
costs than the Canadian producers, this disadvantage may be offset by logistical
and freight advantages in certain markets in the southwestern United States and
the lower United States corn belt.

RESEARCH AND DEVELOPMENT

The Company has a research and development staff of 13 full-time professional
employees whose activities relate primarily to the improvement of existing
products. The expenditures on research activities sponsored by the Company
during fiscal 1998, 1997 and 1996 were approximately $1.6 million, $1.3 million
and $1.2 million, respectively.

EMPLOYEES

As of June 30, 1998, the Company employed approximately 1,600 persons
throughout all of its locations. The Company considers its employee relations
to be satisfactory.

COMPLIANCE WITH ENVIRONMENTAL REGULATIONS

The Company's operations are subject to federal, state, and local laws and
regulations pertaining to the environment, among which are the Clean Air Act,
the Clean Water Act, the Resource Conservation and Recovery Act, the
Comprehensive Emergency Response Compensation and Liability Act, the Toxic
Substances Control Act, and various other federal and state statutes. The
Company's facilities require operating permits that are subject to review by
governmental agencies. The Company believes that its policies and procedures
now in effect are generally in compliance with applicable laws and with the
permits relating to the facilities.

Since 1967, the Company has spent in excess of $60 million on its fertilizer
production facilities in order to meet applicable federal and state pollution
standards. The majority of the Company's environmental capital expenditures
have been in response to the requirements of the Clean Air Act and the Clean
Water Act. Capital expenditures related to environmental obligations for the
past three fiscal years were approximately as follows: 1998 -- $8,800,000;
1997--$8,400,000; and 1996--$920,000.

11


Environmental capital expenditures are expected to be approximately $1.0
million for fiscal 1999. These funds relate to environmental aspects of the
production expansion project at the Carlsbad facilities and a groundwater
monitoring project at the Pascagoula facility.

The Company is currently accruing costs for the future closure of the west
gypsum disposal facility located at Pascagoula, Mississippi. The balance of the
accrual at June 30, 1998, of $9.3 million relates to the portion of the disposal
facility utilized to date. In future years, the Company expects to record
additional charges of approximately $2.0 million related to the future closure
of the facility. These charges will be recorded over the estimated remaining
life of the west storage facility. The accrual of closure costs for the new
east facility will begin when it is placed in service.

In the normal course of its business, the Company is exposed to risks relating
to possible releases of hazardous substances into the environment. Such
releases could cause substantial damage or injuries. Environmental expenditures
have been and will continue to be significant. It is impossible to predict or
quantify the impact of future environmental laws and regulations.

OUTLOOK AND UNCERTAINTIES

Except for the historical statements and discussions, statements set forth in
this report may constitute "forward-looking statements" within the meaning of
Section 21E of the Securities Exchange Act of 1934, as amended. In some cases,
forward-looking statements can be identified by the use of terminology such as
"may," "will," "expects," "plans," "anticipates," "estimates," "potential," or
"continue," the negatives thereof or other comparable terminology. Since these
forward-looking statements rely on a number of assumptions concerning future
events, risks and other uncertainties that are beyond the Company's ability to
control, actual results may differ materially from such forward-looking
statements. Future events, risks and uncertainties that could cause a material
difference in such results include, but are not limited to:

Factors Affecting Fertilizer Demand and Prices. With virtually all of its
nitrogen net sales and approximately 79 percent of its total net sales in fiscal
1998 derived from domestic markets, the Company's operating results are highly
dependent upon conditions in the U.S. agricultural industry. A variety of
factors beyond the Company's control can materially affect domestic fertilizer
demand and pricing. These factors include, but are not limited to futures
prices for crops that require significant fertilizer application, U.S. planted
acreage, government agricultural policies, projected grain stocks, crop failure,
weather, changing or unpredictable crop choices by farmers and changes in
agricultural production methods. Since fertilizers, particularly anhydrous
ammonia, are also used for industrial applications, industrial markets and the
general economy can also affect fertilizer demand and prices.

International market conditions also significantly influence the Company's
operating results. The market for fertilizers is influenced by such factors as
the relative value of the U.S. dollar and its impact upon the cost of importing
or exporting fertilizers; foreign agricultural policies; the existence of, or
changes in, import or foreign currency exchange barriers in certain foreign
markets; changes in the hard currency demands of certain countries; and other
regulatory policies of foreign governments, as well as the laws and policies of
the United States affecting foreign trade and investment. The Company is also
subject to general risks of doing business abroad, including risks associated
with economic or political instability.

In the past, fertilizer prices have been extremely volatile, with significant
price changes from one growing season to the next. Fertilizers are global
commodities and can be subject to intense price

12


competition from domestic and foreign sources. No assurance can be given that
average realized prices paid for the Company's fertilizer products will be at
any level.

Seasonality. The usage of fertilizer for agricultural application is highly
seasonal, and the Company's quarterly results reflect the fact that, in its
markets, significantly more fertilizer is purchased in the spring. Substantial
portions of the Company's net sales and operating income are generated in the
last four months of its fiscal years (March through June). Quarterly results
can vary significantly from one year to the next due primarily to weather-
related shifts in planting schedules and purchase patterns. The Company incurs
appreciable expenditures for fixed costs throughout the year and for inventory
in advance of the spring planting season.

Dependence on Natural Gas. Natural gas is the primary raw material used in
the manufacture of nitrogen products. Natural gas is used as both a chemical
feedstock and a fuel to produce anhydrous ammonia, which is then used in the
production of all other nitrogen products. Anhydrous ammonia is also a raw
material in the production of DAP. Accordingly, the Company's profitability is
dependent upon the price and availability of natural gas. A significant
increase in the price of natural gas that is not recovered through an increase
in the price of the Company's nitrogen products, or an extended interruption in
the supply of natural gas to its production facilities, could have a material
adverse effect on its results of operations and financial condition.

Environmental Regulations. The Company is subject to various environmental
laws and regulations of federal, state and local governments. Significant
capital expenditures and operating costs have been incurred and will continue to
be incurred as a result of these laws and regulations. The Company cannot
predict or quantify the impact of new or changed laws or regulations. In the
normal course of business, the Company is exposed to risks such as possible
release of hazardous substances into the environment. Such releases could cause
substantial damage or injuries and result in material costs to the Company.

Competition. Fertilizer products are global commodities and customers base
their purchasing decisions principally on the delivered price of the product.
As a result, markets for the Company's products are highly competitive. A
number of U.S. producers compete with the Company in domestic and export
markets, and producers in other countries, including state-owned and government-
subsidized entities, compete with the Company in the United States and in
foreign markets to which the Company exports. Many of the Company's competitors
are larger and have greater financial resources than the Company.

Year 2000 Issues. The Company has formed a Year 2000 Committee (the
"Committee") that is responsible for addressing all Year 2000 issues that could
affect the Company. The Year 2000 discussion in Management's Discussion and
Analysis section of its 1998 Annual Report to Shareholders, which is
incorporated herein by reference, details the Committee's efforts to date on
Year 2000 issues. As of September 1, 1998, the Company has spent approximately
$100,000 addressing both its information technology ("IT") and non-IT systems.
Although no one can accurately predict how many Year 2000 related failures will
occur or the severity, duration or financial consequences of such failures, it
is possible that the Company could sustain what is expected to be nonmaterial
operational inconveniences and inefficiencies and be involved in nonmaterial
business disputes related to the Company or one of its vendor's or customer's
inability to carry out certain contractual obligations. The Committee is
working with an outside consultant to oversee its efforts on Year 2000 issues
and assist in developing a contingency plan by the end of calendar 1998 to be
implemented if its efforts to identify and correct Year 2000 problems are not
successful.

13


ITEM 2. PROPERTIES

The Company owns an administration building in Yazoo City that contains
approximately 65,000 square feet of office space.

The Company owns the production plants in Yazoo City and Pascagoula,
Mississippi; Donaldsonville, Louisiana; and Carlsbad, New Mexico, which are
complete with necessary support facilities, such as roads, railroad tracks,
storage, offices, laboratories, warehouses, machine shops, and loading
facilities. Adequate supplies of water and electric power are available at all
locations. In addition to the fertilizer storage facilities at Yazoo City and
Pascagoula, Mississippi; Carlsbad, New Mexico; and Donaldsonville, Louisiana,
the Company also owns or leases 23 major fertilizer storage and distribution
facilities at other locations in Alabama, Arkansas, California, Georgia,
Louisiana, Mississippi, Missouri, Tennessee, and Texas, with a total system-wide
storage capacity of approximately 267,000 tons.

During 1990, the Company entered into an agreement granting a third party the
exclusive option, for a period of four years, to purchase the Company's
undeveloped phosphate rock property, consisting of approximately 12,000 acres,
in Hardee County, Florida. As of July 12, 1994, the Company and the option
holder entered into new agreements with respect to this property whereby the
Company conveyed a portion of the property to the third party and granted to the
third party the exclusive option to purchase the remaining portion of the
property. In January 1998, the third party exercised its option, and on
April 16, 1998, the sale to the third party was consummated with the $57.0
million purchase price being paid in the form of an initial cash payment of $2.4
million and a note for $54.6 million. The note was paid in full by the third
party and canceled on August 19, 1998.

ITEM 3. LEGAL PROCEEDINGS

Cleve Reber CERCLA Site. Triad Nitrogen has received and responded to letters
issued by the U.S. Environmental Protection Agency ("EPA") under Section 104 of
the Comprehensive Environmental Response, Compensation and Liability Act
("CERCLA") relative to the possible disposition of Triad waste at the disposal
site identified as the Cleve Reber site in Ascension Parish, Louisiana. It is
Triad's position that, based upon available information and records, Triad did
not utilize the Cleve Reber site for the disposition of hazardous material, and
it does not appear that Triad has any responsibility for investigation and
cleanup on this site. It should be noted that the EPA is contemplating an action
under the Resource Conservation and Recovery Act, Section 7003, as well as the
CERCLA action mentioned above. The EPA has issued Section 106 orders against
the major contributors at the site for cleanup. They are now engaged in
negotiations for cleanup. In 1994, Triad received a supplemental 104(e) request
for information from the EPA, indicating the EPA's renewed interest in pursuing
Potential Responsible Persons at the site. Triad filed a Freedom of Information
Act request to investigate allegations that some plant trash from Triad may have
been disposed of at the Cleve Reber site.

Terra International, Inc. On August 31, 1995, the Company filed suit in
federal court in Mississippi against Terra International, Inc. ("Terra"),
seeking a declaratory judgment and other relief, establishing that certain
technology relating to the design of an ammonium nitrate neutralizer which the
Company licensed to Terra is not defective and was not the cause of an explosion
which occurred in 1994 at Terra's Port Neal, Iowa, fertilizer facility. The
Company is also seeking damages for defamation based on Terra's public statement
related to the Company's alleged role in the explosion. Also, on August 31,
1995, Terra filed suit in federal court in Iowa against the Company seeking to
recover property damage, lost profits and other out-of-pocket expenses caused by
the explosion. Terra alleges that the ammonium nitrate neutralizer technology
licensed to Terra was defectively designed by the Company and that the design
defect caused the

14


Port Neal explosion. It has been conclusively determined that the Mississippi
federal district court is the proper venue to resolve all issues between the
parties relating to the Port Neal explosion. Discovery has commenced and a trial
date of August 1999 has been set by the court.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

The information required by this item is set forth in the Company's 1998
Annual Report to Shareholders under the caption "Quarterly Results," contained
in "Management's Discussion and Analysis of Financial Condition and Results of
Operations," which information is incorporated herein by reference.

ITEM 6. SELECTED FINANCIAL DATA

The information required by this item is set forth in the Company's 1998
Annual Report to Shareholders under the caption "Financial Highlights," which
information is incorporated herein by reference.

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

The information required by this item is set forth in the Company's 1998
Annual Report to Shareholders under the caption "Management's Discussion and
Analysis of Financial Condition and Results of Operations," which information is
incorporated herein by reference.

ITEM 7A. MARKET RISK

The information required by this item is set forth in the Company's 1998
Annual Report to Shareholders under the caption "Market Risk," which information
is incorporated herein by reference.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The consolidated financial statements, together with the report thereon of
Arthur Andersen LLP dated July 22, 1998, appearing in the Company's 1998 Annual
Report to Shareholders, are incorporated herein by reference.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE

None.

15


PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

(a) The information required by this item regarding directors is set forth in
the Company's Proxy Statement for the 1998 Annual Meeting of Shareholders under
the captions "Nominees for Election to Serve Until 2001," "Directors Continuing
to Serve Until 2000," and "Directors Continuing to Serve Until 1999," which
information is incorporated herein by reference.

(b) Executive officers are elected for a one-year term by the Board of
Directors. The Company's executive officers are as follows:



OFFICE AND EMPLOYMENT DURING THE
NAME OF OFFICER AGE LAST FIVE FISCAL YEARS
- ---------------- --- ---------------------------------------------------------------------


Charles O. Dunn 50 President and Chief Executive Officer since April 1, 1993; Executive
Vice President (1988-1993)
C. E. McCraw 50 Senior Vice President-Operations since July 12, 1994; Senior Vice
President-Fertilizer Group (1991-1994)
Robert E. Jones 50 Senior Vice President-Corporate Development effective October 1, 1997;
Senior Vice President and General Counsel (1996-1997); Vice President
and General Counsel (1989-1996)
David W. Arnold 61 Senior Vice President-Technical Group since July 1, 1991
Timothy A. Dawson 44 Vice President-Finance and Chief Financial Officer since January 18,
1996; Director of Finance (1987-1996)
John J. Duffy 64 Vice President-Marketing and Distribution since November 1, 1996; Vice
President-Marketing (1995-1996); Vice President-Sales and Marketing
(1994-1995); Director of Sales and Marketing (1991-1994)
Ethel Truly 48 Vice President-Administration since January 18, 1996; Director of
Administrative Services (1995-1996); Assistant General Counsel
(1985-1995)
Larry W. Holley 50 Vice President-Nitrogen Production since July 17, 1997; Director of
Nitrogen Production (1997); Director of Energy (1991-1997)
William L. Smith 48 General Counsel since October 1, 1997; partner in the law firm of
Brunini, Grantham, Grower & Hewes, PLLC (1982-1997)


(c) The information called for with respect to the identification of certain
significant employees is not applicable to the Registrant.

(d) There are no family relationships between the directors and executive
officers listed above. There are no arrangements or understandings between any
named officer and any other person pursuant to which such person was selected as
an officer.

16


The information required by this item regarding compliance with Section 16(a)
of the Exchange Act is set forth in the Company's Proxy Statement for the 1998
Annual Meeting of Shareholders under the caption "Compliance with Section 16(a)
of the Exchange Act," which information is incorporated herein by reference.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this item is set forth in the Company's Proxy
Statement for the 1998 Annual Meeting of Shareholders under the captions
"Compensation Committee Report on Executive Compensation" and "Executive
Compensation," which information is incorporated herein by reference.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The information required by this item is set forth in the Company's Proxy
Statement for the 1998 Annual Meeting of Shareholders under the caption
"Management Ownership of the Company's Stock," which information is incorporated
herein by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

The information required by this item is set forth in the Company's Proxy
Statement for the 1998 Annual Meeting of Shareholders under the caption "Board
of Directors and Committees," which information is incorporated herein by
reference.

17


PART IV

ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

(a) FINANCIAL STATEMENTS AND SCHEDULES

The consolidated financial statements, together with the report thereon of
Arthur Andersen LLP dated July 22, 1998, appearing in the 1998 Annual Report to
Shareholders, are incorporated by reference in this Form 10-K. With the
exception of the aforementioned information and information incorporated by
reference in Items 5, 6, 7, 7A and 8, the 1998 Annual Report to Shareholders is
not to be deemed filed as part of this Form 10-K. The following financial
statement schedule also should be read in conjunction with the financial
statements in such 1998 Annual Report to Shareholders. Financial statement
schedules not included in this Form 10-K have been omitted because they are not
applicable or the required information is shown in the financial statements or
notes thereto. Separate financial statements of 50 percent or less owned
persons accounted for by the equity method that are not shown herein have been
omitted because, if considered in the aggregate, they would not constitute a
significant subsidiary.

(i) Financial Statements:

Report of Independent Public Accountants

Consolidated Balance Sheets, June 30, 1998 and 1997

Consolidated Statements of Income, Years Ended June 30, 1998, 1997 and
1996

Consolidated Statements of Shareholders' Equity, Years Ended June 30,
1998, 1997 and 1996

Consolidated Statements of Cash Flows, Years Ended June 30, 1998, 1997
and 1996

Notes to Consolidated Financial Statements

(B) EXHIBITS:

Exhibits filed as part of this report are listed below. Certain
exhibits have been filed previously with the Commission and are
incorporated herein by reference.

18


SEC EXHIBIT
REFERENCE NO. DESCRIPTION
- ------------- -----------


2.1 Asset Purchase Agreement, dated as of May 21, 1996, by and
among the Company, Mississippi Acquisition I, Inc., Mississippi
Acquisition II, Inc., Eddy Potash, Inc., and New Mexico Potash
Corporation; filed as Exhibit 2.1 to the Company's Current
Report on Form 8-K filed September 3, 1996, SEC File No.
0-20411, and incorporated herein by reference.

2.2 Agreement and Plan of Merger and Reorganization, dated as of
August 27, 1996, by and among the Company, MISS SUB, INC., and
First Mississippi Corporation; filed as Exhibit 2.2 to the
Company's Annual Report on Form 10-K for the fiscal year ended
June 30, 1996, SEC File No. 0-20411, and incorporated herein by
reference.

3.1 Articles of Incorporation of the Company; filed as Exhibit 3.1
to the Company's Amendment No. 1 to Form S-1 Registration
Statement filed August 2, 1994, SEC File No. 33-53119, and
incorporated herein by reference.

3.2 Bylaws of the Company; filed as Exhibit 3.2 to the Company's
Annual Report on Form 10-K for the fiscal year ended June 30,
1997, SEC File No. 0-20411, and incorporated herein by reference.

4.1 Shareholder Rights Plan; filed as Exhibit 1 to the Company's
Form 8-A Registration Statement dated August 15, 1994, SEC File
No. 2-7803, and incorporated herein by reference.

4.2 Indenture dated as of November 25, 1997, between the Company and
Harris Trust and Savings Bank, as Trustee, for the issuance of
up to $300 million of debt securities; filed as Exhibit 4(a) to
the Company's Current Report on Form 8-K filed November 25,
1997, SEC File No. 001-12217, and incorporated herein by
reference.

4.3 Indenture of Trust dated as of March 1, 1998, between Mississippi
Business Finance Corporation and Deposit Guaranty National Bank,
for the issuance of bonds in the aggregate principal amount of
$14.5 million to assist the Company in financing and
refinancing the cost of construction and equipping of solid
waste disposal facilities at its Pascagoula, Mississippi,
facility.

10.1 Agreement made and entered into as of September 15, 1991, between
Office Cherifien des Phosphates and the Company for the sale and
purchase of phosphate rock; filed as Exhibit 10.1 to the
Company's Annual Report on Form 10-K for the fiscal year ended
June 30, 1991, File No. 2-7803, and incorporated herein by
reference.

19


10.2 Amendment No. 1, effective as of July 1, 1992, to the Agreement
effective as of September 15, 1991, between Office Cherifien des
Phosphates and the Company for the sale and purchase of phosphate
rock; filed as Exhibit 10.12 to the Company's Annual Report on
Form 10-K for the fiscal year ended June 30, 1995, SEC File No.
2-7803, and incorporated herein by reference /1/


10.3 Amendment No. 2, effective as of July 1, 1993, to the Agreement
effective as of September 15, 1991, between Office Cherifien des
Phosphates and the Company for the sale and purchase of phosphate
rock; filed as Exhibit 10.11 to the Company's Annual Report on
Form 10-K for the fiscal year ended June 30, 1995, SEC File No.
2-7803, and incorporated herein by reference. /2/

10.4 Amendment No. 3, effective as of January 1, 1995, to the
Agreement effective as of September 15, 1991, between Office
Cherifien des Phosphates and the Company for the sale and
purchase of phosphate rock; filed as Exhibit 10.10 to the
Company's Annual Report on Form 10-K for the fiscal year ended
June 30, 1995, SEC File No. 2-7803, and incorporated herein by
reference. /3/


10.5 Amendment No. 4, effective as of January 1, 1997, to the
Agreement effective as of September 15, 1991, between Office
Cherifien des Phosphates and the Company for the sale and
purchase of phosphate rock; filed as Exhibit 10.8 to the
Company's Annual Report on Form 10-K for the fiscal year ended
June 30, 1997, SEC File No. 0-20411, and incorporated herein by
reference.

10.6 Credit Agreement dated as of November 25, 1997, among the
Company; the Lenders Party Thereto; Harris Trust and Savings
Bank, as Administrative Agent; Bank of Montreal, Chicago Branch,
as Syndication Agent; and Credit Agricole Indosuez, as Co-Agent,
establishing the Company's $200 million revolving line of credit.

10.7 Form of Severance Agreement dated July 29, 1996, by and between
the Company and each of its Executive Officers; filed as
Exhibit 10.14 to the Company's Annual Report on Form 10-K for
the fiscal year ended June 30, 1996, SEC File No. 2-7803, and
incorporated herein by reference.

10.8 Mississippi Chemical Corporation Officer and Key Employee
Incentive Plan.

- -------------------
/1/ Pursuant to the Securities Exchange Act of 1934, Rule 24b-2,
confidential business information has been deleted from the first and second
paragraphs of paragraph numbered 1 of Amendment No. 1, and an application for
confidential treatment has been filed separately with the Commission.

/2/ Pursuant to the Securities Exchange Act of 1934, Rule 24b-2,
confidential business information has been deleted from paragraphs numbered 5
and 8 of Amendment No. 2; from the first paragraph, paragraph numbered 1,
paragraph numbered 2, and paragraph numbered 3 of Schedule 1, Exhibit A; from
Schedule 2, Exhibit B; from Schedule 3, Exhibit C, and from Schedule 4, Exhibit
D; and an application for confidential treatment has been filed separately with
the Commission.

/3/ Pursuant to the Securities Exchange Act of 1934, Rule 24b-2,
confidential business information has been deleted from Schedule 1 to Amendment
No. 3, Exhibit B, and an application for confidential treatment has been filed
separately with the Commission.

20


10.9 Mississippi Chemical Corporation Executive Deferred Compensation
Plan.

10.10 Mississippi Chemical Corporation Nonemployee Directors' Deferred
Compensation Plan.

10.11 Mississippi Chemical Corporation Supplemental Benefit Plan, as
amended and restated as of July 1, 1996.

10.12 Mississippi Chemical Corporation 1994 Stock Incentive Plan;
filed as Exhibit 4.2 to the Company's Form S-8 Registration
Statement filed December 21, 1995, SEC File No. 33-65209, and
incorporated herein by reference.

10.13 Mississippi Chemical Corporation 1995 Stock Option Plan for
Nonemployee Directors; filed as Exhibit 4.3 to the Company's
Form S-8 Registration Statement filed December 21, 1995, SEC
File No. 33-65209, and incorporated herein by reference.

10.14 Mississippi Chemical Corporation 1995 Restricted Stock Purchase
Plan for Nonemployee Directors; filed as Exhibit 4.4 to the
Company's Form S-8 Registration Statement filed December 21,
1995, SEC File No. 33-65209, and incorporated herein by
reference.

13.1 Portions of the Company's 1998 Annual Report to Shareholders as
referenced in this Form 10-K for the fiscal year ending June 30,
1998.

21 List of subsidiaries of the Company.

23 Consent of Arthur Andersen LLP.

27 Financial Data Schedule.

(c) REPORTS ON FORM 8-K:

No reports were filed on Form 8-K during the three months ended June 30,
1998.

21


SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) 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.

MISSISSIPPI CHEMICAL CORPORATION

By: /s/ Charles O. Dunn
-------------------
Charles O. Dunn
President
Principal Executive Officer

By: /s/ Timothy A. Dawson
---------------------
Timothy A. Dawson
Vice President-Finance
Principal Financial Officer and Chief Accounting
Officer
Date: September 25, 1998

Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the dates indicated.



SIGNATURE TITLE DATE


/s/ Charles O. Dunn Director, September 25, 1998
- ------------------------------------ President and Chief Executive Officer
Charles O. Dunn (principal executive officer)


/s/ Coley L. Bailey Director, Chairman of the Board September 25, 1998
- ------------------------------------
Coley L. Bailey

/s/ John Sharp Howie Director, Vice Chairman of the Board September 25, 1998
- ------------------------------------
John Sharp Howie

/s/ John W. Anderson Director September 25, 1998
- ------------------------------------
John W. Anderson

/s/ Haley Barbour Director September 25, 1998
- ------------------------------------
Haley Barbour

/s/ Frank R. Burnside, Jr. Director September 25, 1998
- ------------------------------------
Frank R. Burnside, Jr.

/s/ Robert P. Dixon Director September 25, 1998
- ------------------------------------
Robert P. Dixon

/s/ W. R. Dyess Director September 25, 1998
- ------------------------------------
W. R. Dyess

/s/ Woods E. Eastland Director September 25, 1998
- ------------------------------------
Woods E. Eastland

/s/ George D. Penick, Jr. Director September 25, 1998
- ------------------------------------
George D. Penick, Jr.

/s/ W. A. Percy II Director September 25, 1998
- ------------------------------------
W. A. Percy II

/s/ David M. Ratcliffe Director September 25, 1998
- ------------------------------------
David M. Ratcliffe

/s/ Wayne Thames Director September 25, 1998
- ------------------------------------
Wayne Thames


22


MISSISSIPPI CHEMICAL CORPORATION

EXHIBIT INDEX
TO
FORM 10-K



EXHIBIT PAGE
NUMBER DESCRIPTION NUMBER
- ------- --------------------------------------------------------------------------- -------

2.1 Asset Purchase Agreement, dated as of May 21, 1996, by and among the
Company, Mississippi Acquisition I, Inc., Mississippi Acquisition II, Inc.,
Eddy Potash, Inc., and New Mexico Potash Corporation; filed as Exhibit 2.1
to the Company's Current Report on Form 8-K filed September 3, 1996, SEC
File No. 0-20411, and incorporated herein by reference.
2.2 Agreement and Plan of Merger and Reorganization, dated as of August 27,
1996, by and among the Company, MISS SUB, INC., and First Mississippi
Corporation; filed as Exhibit 2.2 to the Company's Annual Report on Form
10-K for the fiscal year ended June 30, 1996, SEC File No. 0-20411, and
incorporated herein by reference.
3.1 Articles of Incorporation of the Company; filed as Exhibit 3.1 to the
Company's Amendment No. 1 to Form S-1 Registration Statement filed August
2, 1994, SEC File No. 33-53119, and incorporated herein by reference.
3.2 Bylaws of the Company; filed as Exhibit 3.2 to the Company's Annual Report
on Form 10-K for the fiscal year ended June 30, 1997, SEC File No. 0-20411,
and incorporated herein by reference.
4.1 Shareholder Rights Plan; filed as Exhibit 1 to the Company's Form 8-A
Registration Statement dated August 15, 1994, SEC File No. 2-7803, and
incorporated herein by reference.
4.2 Indenture dated as of November 25, 1997, between the Company and Harris
Trust and Savings Bank, as Trustee, for the issuance of up to $300 million
of debt securities; filed as Exhibit 4(a) to the Company's Current Report
on Form 8-K filed November 25, 1997, SEC File No. 001-12217, and
incorporated herein by reference.
4.3 Indenture of Trust dated as of March 1, 1998, between Mississippi Business [ ]
Finance Corporation and Deposit Guaranty National Bank, for the issuance of
bonds in the aggregate principal amount of $14.5 million to assist the
Company in financing and refinancing the cost of construction and equipping
of solid waste disposal facilities at its Pascagoula, Mississippi, facility.


23




10.1 Agreement made and entered into as of September 15, 1991, between Office
Cherifien des Phosphates and the Company for the sale and purchase of
phosphate rock; filed as Exhibit 10.1 to the Company's Annual Report on
Form 10-K for the fiscal year ended June 30, 1991, File No. 2-7803, and
incorporated herein by reference.
10.2 Amendment No. 1, effective as of July 1, 1992, to the Agreement effective
as of September 15, 1991, between Office Cherifien des Phosphates and the
Company for the sale and purchase of phosphate rock; filed as Exhibit 10.12
to the Company's Annual Report on Form 10-K for the fiscal year ended June
30, 1995, SEC File No. 2-7803, and incorporated herein by reference /4/
10.3 Amendment No. 2, effective as of July 1, 1993, to the Agreement effective
as of September 15, 1991, between Office Cherifien des Phosphates and the
Company for the sale and purchase of phosphate rock; filed as Exhibit 10.11
to the Company's Annual Report on Form 10-K for the fiscal year ended June
30, 1995, SEC File No. 2-7803, and incorporated herein by reference. /5/
10.4 Amendment No. 3, effective as of January 1, 1995, to the Agreement
effective as of September 15, 1991, between Office Cherifien des Phosphates
and the Company for the sale and purchase of phosphate rock; filed as
Exhibit 10.10 to the Company's Annual Report on Form 10-K for the fiscal
year ended June 30, 1995, SEC File No. 2-7803, and incorporated herein by
reference. /6/
10.5 Amendment No. 4, effective as of January 1, 1997, to the Agreement
effective as of September 15, 1991, between Office Cherifien des Phosphates
and the Company for the sale and purchase of phosphate rock; filed as
Exhibit 10.8 to the Company's Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, SEC File No. 0-20411, and incorporated herein by
reference.

- --------------------
/4/ Pursuant to the Securities Exchange Act of 1934, Rule 24b-2,
confidential business information has been deleted from the first and second
paragraphs of paragraph numbered 1 of Amendment No. 1, and an application for
confidential treatment has been filed separately with the Commission.

/5/ Pursuant to the Securities Exchange Act of 1934, Rule 24b-2,
confidential business information has been deleted from paragraphs numbered 5
and 8 of Amendment No. 2; from the first paragraph, paragraph numbered 1,
paragraph numbered 2, and paragraph numbered 3 of Schedule 1, Exhibit A; from
Schedule 2, Exhibit B; from Schedule 3, Exhibit C, and from Schedule 4, Exhibit
D; and an application for confidential treatment has been filed separately with
the Commission.

/6/ Pursuant to the Securities Exchange Act of 1934, Rule 24b-2,
confidential business information has been deleted from Schedule 1 to Amendment
No. 3, Exhibit B, and an application for confidential treatment has been filed
separately with the Commission.

24




10.6 Credit Agreement dated as of November 25, 1997, among the Company; the [ ]
Lenders Party Thereto; Harris Trust and Savings Bank, as Administrative
Agent; Bank of Montreal, Chicago Branch, as Syndication Agent; and Credit
Agricole Indosuez, as Co-Agent, establishing the Company's $200 million
revolving line of credit.
10.7 Form of Severance Agreement dated July 29, 1996, by and between the Company
and each of its Executive Officers; filed as Exhibit 10.14 to the Company's
Annual Report on Form 10-K for the fiscal year ended June 30, 1996, SEC
File No. 2-7803, and incorporated herein by reference.
10.8 Mississippi Chemical Corporation Officer and Key Employee Incentive Plan. [ ]
10.9 Mississippi Chemical Corporation Executive Deferred Compensation Plan. [ ]
10.10 Mississippi Chemical Corporation Nonemployee Directors' Deferred [ ]
Compensation Plan.
10.11 Mississippi Chemical Corporation Supplemental Benefit Plan, as amended and [ ]
restated as of July 1, 1996.
10.12 Mississippi Chemical Corporation 1994 Stock Incentive Plan; filed as
Exhibit 4.2 to the Company's Form S-8 Registration Statement filed December
21, 1995, SEC File No. 33-65209, and incorporated herein by reference.
10.13 Mississippi Chemical Corporation 1995 Stock Option Plan for Nonemployee
Directors; filed as Exhibit 4.3 to the Company's Form S-8 Registration
Statement filed December 21, 1995, SEC File No. 33-65209, and incorporated
herein by reference.
10.14 Mississippi Chemical Corporation 1995 Restricted Stock Purchase Plan for
Nonemployee Directors; filed as Exhibit 4.4 to the Company's Form S-8
Registration Statement filed December 21, 1995, SEC File No. 33-65209, and
incorporated herein by reference.
13.1 Portions of the Company's 1998 Annual Report to Shareholders as referenced [ ]
in this Form 10-K for the fiscal year ending June 30, 1998.
21 List of subsidiaries of the Company. [ ]
23 Consent of Arthur Andersen LLP. [ ]
27 Financial Data Schedule. [ ]


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