CHEMFIRST INC
S-8, 1996-12-24
AGRICULTURAL CHEMICALS
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<PAGE>   1
 File No. 333-_______, as filed with the Securities and Exchange Commission on
                              December ___, 1996

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                        FORM S-8 REGISTRATION STATEMENT
                                   UNDER THE
                             SECURITIES ACT OF 1933

                                 CHEMFIRST INC.
               (Exact name of issuer as specified in its charter)


MISSISSIPPI (State of Incorporation)     64-0679456 (I.R.S. Employer ID Number)

 700 NORTH STREET, JACKSON, MISSISSIPPI                      39202
(Address of Principal Executive Offices)                   (Zip Code)

                  CHEMFIRST INC. 1980 LONG-TERM INCENTIVE PLAN
                  CHEMFIRST INC. 1988 LONG-TERM INCENTIVE PLAN
                  CHEMFIRST INC. 1995 LONG-TERM INCENTIVE PLAN
                           (Full Title of the Plans)

                  JAMES L. MCARTHUR, SECRETARY, CHEMFIRST INC.
                P. O. BOX 1249, JACKSON, MISSISSIPPI 39215-1249
                                 (601) 948-7550
           (Name, address and telephone number of agent for service)

CALCULATION OF REGISTRATION FEE                                                
<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------------------------
                                            Amount to be      Proposed Maximum Offering Proposed Maximum           Amount of
Title of Securities to be Registered        Registered (1)    Price Per Share (2)       Aggregate Offering Price   Registration Fee
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                         <C>               <C>                       <C>                        <C>
Common Stock                                1,520,422 shares  issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1987-A Series Convertible Preferred Stock   30,000 shares     issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1988-A Series Convertible Preferred Stock   66,000 shares     issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1988-1 Series Convertible Preferred Stock   5,000 shares      issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1989-A Series Convertible Preferred Stock   16,500 shares     issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1989-1 Series Convertible Preferred Stock   45,000 shares     issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1989-2 Series Convertible Preferred Stock   5,000 shares      issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1990-1 Series Convertible Preferred Stock   52,367 shares     issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1990-2 Series Convertible Preferred Stock   5,000 shares      issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1991-1 Series Convertible Preferred Stock   4,000 shares      issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1991-2 Series Convertible Preferred Stock   5,000 shares      issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1992-1 Series Convertible Preferred Stock   5,000 shares      issuable upon conversion  Not applicable             Not applicable
- -----------------------------------------------------------------------------------------------------------------------------------
1987-A Convertible Subordinated Debentures  $433,125.00       100% of face amount       $433,125.00                131.25        
- -----------------------------------------------------------------------------------------------------------------------------------
1988-A Convertible Subordinated Debentures  $1,051,875.00     100% of face amount       $1,051,875.00              318.75        
- -----------------------------------------------------------------------------------------------------------------------------------
1988-1 Convertible Subordinated Debentures  $80,625.00        100% of face amount       $80,625.00                 24.43         
- -----------------------------------------------------------------------------------------------------------------------------------
1989-A Convertible Subordinated Debentures  $288,750.00       100% of face amount       $288,750.00                87.50         
- -----------------------------------------------------------------------------------------------------------------------------------
1989-1 Convertible Subordinated Debentures  $787,500.00       100% of face amount       $787,500.00                238.64        
- -----------------------------------------------------------------------------------------------------------------------------------
1989-2 Convertible Subordinated Debentures  $69,062.50        100% of face amount       $69,062.50                 20.93         
- -----------------------------------------------------------------------------------------------------------------------------------
1990-1 Convertible Subordinated Debentures  $576,033.00       100% of face amount       $576,033.00                174.56        
- -----------------------------------------------------------------------------------------------------------------------------------
1990-2 Convertible Subordinated Debentures  $46,875.00        100% of face amount       $46,875.00                 14.20         
- -----------------------------------------------------------------------------------------------------------------------------------
1991-1 Convertible Subordinated Debentures  $39,250.00        100% of face amount       $39,250.00                 11.89         
- -----------------------------------------------------------------------------------------------------------------------------------
1991-2 Convertible Subordinated Debentures  $46,562.50        100% of face amount       $46,562.50                 14.11         
- -----------------------------------------------------------------------------------------------------------------------------------
1992-1 Convertible Subordinated Debentures  $39,062.50        100% of face amount       $39,062.50                 11.84         
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                                      Total Fee       $1,048.10
</TABLE>

(1)  Subject to anti-dilution increases permitted by Rule 416.
(2)  Estimated solely for calculation of the registration fee pursuant to Rule
     457(i).
<PAGE>   2
                                    PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  Incorporation of Documents by Reference

         The following documents filed with the Commission by ChemFirst Inc.
         (the "Company") are incorporated herein by reference: (1) the
         Company's Registration Statement on Form S-1, dated November 18, 1996
         (the "S-1 Registration Statement"), and (2) the description of the
         Company's Common Stock contained in the Company's Registration
         Statement on Form 8-A filed on December 9, 1996 (which is incorporated
         by reference to the S-1 Registration Statement). All documents filed
         hereafter by the Company or the Plan pursuant to Section 13, 14 or
         15(d) of the Securities Exchange Act of 1934 prior to the termination
         of the offering hereunder shall be deemed to be incorporated by
         reference into this Prospectus and to be a part hereof from the date
         of filing of such documents.


ITEM 4.  Description of Securities

                            The 1980 and 1988 Plans:

         See Item 3 for description of Common Stock (including any provision of
         the Company's Amended and Restated Articles of Incorporation or Bylaws
         having an effect on a change of control of the Registrant).

                              1980 Plan Debentures

     The Company has been assigned and has assumed all obligations under a
total of three series of debentures for issuance pursuant to debenture options
under the 1980 Plan, which have been designated as the Company's 1987-A Series
Convertible Subordinated Debentures (the "1987-A Series Debentures"), 1988-A
Series Convertible Subordinated Debentures (the "1988-A Series Debentures"),
and the 1989-A Series Convertible Subordinated Debentures (the "1989-A Series
Debentures"). These three debenture series will sometimes be referred to
collectively as the "1980 Plan Debentures," and except as otherwise indicated,
are subject to the same terms and conditions. They have been created for
issuance pursuant to regular debenture options. The Company has authorized the
issuance, pursuant to the exercise of debenture options, of an aggregate
principal amount of $433,125 of 1987-A Series Debentures, $1,051,875 of 1988-A
Series Debentures and $288,750 of 1989-A Series Debentures. Of these amounts,
$255,000 of the 1988-A Series and $227,500 of the 1989-A Series has been
purchased and is outstanding, but not yet converted.

     The 1987-A Series Debentures are governed by an Indenture dated as of
August 10, 1987. The 1988-A Series Debentures are governed by an Indenture
dated
<PAGE>   3
as of August 30, 1988. The 1989-A Series Debentures are governed by an
Indenture dated as of August 22, 1989. These Indentures were amended by
Supplemental Indentures dated November 14, 1991 and December 23, 1996. Pursuant
to the Supplemental Indentures dated December 23, 1996, the Company assumed the
obligations of First Mississippi Corporation (the "Predecessor Corporation") in
connection with the Predecessor Corporation's distribution of all of the Common
stock of the Company to the shareholders of the Predecessor Corporation (the
Spin-off"). The Indentures are all between the Company and Deposit Guaranty
National Bank, as Trustee (the "Trustee"), One Deposit Guaranty Plaza, Jackson,
Mississippi 39201. The Trustee also serves as a registrar for the Company's
Common Stock and engages in commercial banking transactions with the Company in
the ordinary course of business.

     The three series of debentures created for issuance pursuant to debenture
options under the 1980 Plan have the following maturity dates:

<TABLE>
<CAPTION>
               Debenture Series                   Maturity Date
               ----------------                   -------------
                  <S>                            <C>
                  1987-A                         August 9, 1997
                  1988-A                         August 29, 1998
                  1989-A                         August 21, 1999
</TABLE>

     In certain circumstances described below, the 1980 Plan Debentures may be
redeemed prior to their maturity date. The three debenture series will be
subordinated generally to the Company's other indebtedness, except that they
will rank equally with each other and any other series of debentures created
for issuance under the Plans. Interest on the 1980 Plan Debentures will be
payable semi-annually on January 1 and July 1 of each year.

     Subject to the conditions described herein, at any time more than six
months after the date of grant of the applicable 1980 Plan Debenture Option and
prior to the redemption or payment thereof, each 1980 Plan Debenture will be
convertible into fully paid and non-assessable shares of the Company's
Preferred Stock at a conversion price as set forth in the following table:

<TABLE>
<CAPTION>
                                  Convertible into    Conversion Price
     Debenture Series             Preferred Stock         Per Share   
     ----------------             ----------------    ----------------
         <S>                        <C>                   <C>
         1987-A                     1987-A Series         $ 8.9674
         1988-A                     1988-A Series           9.8991
         1989-A                     1989-A Series          10.8696
</TABLE>

The Board of Directors is authorized to determine the appropriate adjustments,
if any, in the number of shares of Common Stock issuable upon conversion of the
Preferred Stock in the event of any reclassification, recapitalization, merger,
consolidation, reorganization, issuance of warrants, rights or debentures,
stock dividend, stock split or reverse stock split, cash dividend, property
dividend, including, without limitation, a distribution of the stock of a
subsidiary,

                                       3

<PAGE>   4

combination or exchange of shares, repurchase of shares, or any other change of
the Company's corporate structure, which in the judgment of the Board of
Directors, materially affects the value of the Company's shares. Any such
adjustments to the number of shares of Common Stock issuable upon conversion of
the Preferred Stock would be subject to any required authorization of
additional Common Stock for issuance upon conversion of the Preferred Stock.
Each share of the Preferred Stock into which the 1980 Plan Debentures are
convertible as described above was initially convertible into one share of
Common Stock, is subject to adjustment into 1.61 shares of Common Stock by the
Board of Directors of First Mississippi Corporation to reflect the distribution
of Getchell Gold Common Stock (formerly, FirstMiss Gold Inc.) in 1995 and is
subject to additional adjustment in certain events, including an adjustment due
to the economic impact of the Spin-off. The adjustment for the Spin-off will be
based on a formula which will be adopted by the Board of Directors of the
Company in order to match the initial value of the Common stock issuable upon
conversion to the value of the Common stock of FM that would have been issuable
had the Spin-off not occurred. See also "Description of Convertible Preferred
Stock."


                              1988 Plan Debentures

     The eight series of debentures created for issuance pursuant to debenture
options under the 1988 Plan have been designated as the Company's 1988-1 Series
Convertible Subordinated Debentures (the "1988-1 Series Debentures"), the
Company's 1989-1 Series Convertible Subordinated Debentures (the "1989-1 Series
Debentures"), the Company's 1989-2 Series Convertible Subordinated Debentures
(the "1989-2 Series Debentures"), the Company's 1990-1 Series Convertible
Subordinated Debentures (the "1990-1 Series Debentures"), the Company's 1990-2
Series Convertible Subordinated Debentures (the "1990-2 Series Debentures"),
the Company's 1991-1 Series Convertible Subordinated Debentures (the "1991-1
Series Debentures"), the Company's 1991-2 Series Convertible Subordinated
Debentures (the "1991-2 Series Debentures"), and the Company's 1992-1 Series
Convertible Subordinated Debentures (the "1992-1 Series Debentures"). The
1988-1 Series Debentures, the 1989-1 Series Debentures, the 1989-2 Series
Debentures, the 1990-1 Series Debentures, the 1990-2 Series Debentures, the
1991-1 Series Debentures, the 1991-2 Series Debentures, and the 1992-1 Series
Debentures are hereinafter referred to collectively as the "1988 Plan
Debentures." The Company has authorized the issuance, pursuant to the exercise
of debenture options, of an aggregate principal amount of $80,625 of 1988-1
Series Debentures, $787,500 of 1989-1 Series Debentures, $69,062.50 of 1989-2
Series Debentures, $576,033 of 1990-1 Series Debentures, $46,875 of 1990-2
Series Debentures, $39,250 of 1991-1 Series Debentures, $ 46,562.50 of 1991-2
Series Debentures, and $39,062.50 of 1992-1 Series Debentures. Of these
amounts, $81,033 of the 1990-1 Series has been purchased and is outstanding,
but not yet converted.

     The 1988-1 Series Debentures are governed by an Indenture dated as of
November 29, 1988, the 1989-1 Series Debentures are governed by an Indenture
dated as of August 22, 1989, the 1989-2 Series Debentures are governed by an
Indenture dated as of November 10, 1989, the 1990-1 Series Debentures are
governed by an Indenture dated as of August 27, 1990, the 1990-2 Series
Debentures are governed by an Indenture dated as of November 9, 1990, the
1991-1 Series


                                       4
<PAGE>   5

Debentures are governed by an Indenture dated as of August 27, 1991, the 1991-2
Series Debentures are governed by an Indenture dated as of November 15, 1991,
and the 1992-1 Series Debentures are governed by an Indenture dated as of
November 13, 1992, all between the Company and Deposit Guaranty National Bank,
as Trustee (the "Trustee"), One Deposit Guaranty Plaza, Jackson, Mississippi
39201. In addition, the Trustee serves as a registrar for the Company's Common
Stock and engages in commercial banking transactions with the Company in the
ordinary course of business. The 1988-1 Indenture, 1989-1 Indenture, 1989-2
Indenture, 1990-1 Indenture, 1990-2 Indenture and 1991-1 Indenture were amended
by Supplemental Indentures dated November 14, 1991 and December 23, 1996.
Pursuant to the Supplemental Indentures dated December 23, 1996, the Company
assumed the obligations of First Mississippi Corporation (the "Predecessor
Corporation") in connection with the Predecessor Corporation's distribution of
all of the Common stock of the Company to the shareholders of the Predecessor
Corporation (the Spin-off").


<TABLE>
<CAPTION>
              Debenture Series               Maturity Date
              ----------------               -------------
              <S>                            <C>
              1988-1                         November 28, 1998
              1989-1                         August 21, 1999
              1989-2                         November 9, 1999
              1990-1                         August 26, 2000
              1990-2                         November 8, 2000
              1991-1                         August 26, 2001
              1991-2                         November 14, 2001
              1992-1                         November 12, 2002
</TABLE>



In certain circumstances described below, the 1988 Plan Debentures may be
redeemed prior to their due date. The 1988-1, 1989-1, 1989-2, 1990-1, 1990-2,
1991-1, 1991-2, and 1992-1 Series Debentures will be subordinated generally to
the Company's other indebtedness, except that they will rank equally with each
other and any other series of debentures created for issuance under the 1988.
Interest on the 1988 Plan Debentures will be payable semiannually on January 1
and July 1 of each year.

     Subject to the conditions described herein, at any time more than six
months after the date of grant of the applicable 1988 Plan Debenture Option and
prior to the redemption or payment thereof, the 1988-1 Series Debentures will
be convertible at the Conversion Price of $10.0155 per share into fully paid
and non-assessable 1988-1 Series Convertible Preferred Stock, the 1989-1 Series
Debentures will be convertible at the Conversion Price of $10.8696 per share
into fully paid and non-assessable 1989-1 Series Convertible Preferred Stock,
the 1989-2 Series Debentures will be convertible at the Conversion Price of
$8.5792 per share into fully paid and non-assessable 1989-2 Series Convertible
Preferred Stock, the 1990-1 Series Debentures will be convertible at the
Conversion Price of $6.8323 per share into fully paid and non-assessable 1990-1
Series Convertible Preferred Stock, the 1990-2 Series Debentures will be
convertible at


                                       5
<PAGE>   6

the Conversion Price of $5.8230 per share into fully paid and non-assessable
1990-2 Series Convertible Preferred Stock, the 1991-1 Series Debentures will be
convertible at the Conversion Price of $6.0947 per share into fully paid and
non-assessable 1991-1 Series Convertible Preferred Stock, the 1991-2 Series
Debentures will be convertible at the Conversion Price of $5.7842 per share
into fully paid and non-assessable 1991-2 Series Convertible Preferred Stock,
and the 1992-1 Series Debentures will be convertible at the Conversion Price of
$4.8525 per share into fully paid and non-assessable 1992-1 Series Convertible
Preferred Stock. The Board of Directors is authorized to determine the
appropriate adjustments, if any, in the number of shares of Common Stock
issuable upon conversion of the Preferred Stock in the event of any
reclassification, recapitalization, merger, consolidation, reorganization,
issuance of warrants, rights or debentures, stock dividend, stock split or
reverse stock split, cash dividend, property dividend, including, without
limitation, a distribution of the stock of a subsidiary, combination or
exchange of shares, repurchase of shares, or any other change of the Company's
corporate structure, which in the judgment of the Board of Directors,
materially affects the value of the Company's shares. Any such adjustments to
the number of shares of Common Stock issuable upon conversion of the Preferred
Stock would be subject to any required authorization of additional shares of
Common Stock for issuance upon conversion of the Preferred Stock. Each share of
the Preferred Stock was initially convertible into one share of Common Stock,
is subject to adjustment into 1.61 shares of Common Stock by the Board of
Directors of First Mississippi Corporation to reflect the distribution of
Getchell Gold Common Stock (formerly, FirstMiss Gold Inc.) in 1995 and is
subject to adjustment in certain events, including an adjustment due to the
economic impact of the Spin-off. The adjustment for the Spin-off will be based
on a formula which will be adopted by the Board of Directors of the Company in
order to match the initial value of the Common stock issuable upon conversion
to the value of the Common stock of FM that would have been issuable had the
Spin-off not occurred. See also "Description of Convertible Preferred Stock."

             Provisions Applicable to Both the 1980 Plan Debentures
                          and the 1988 Plan Debentures

     The 1980 Plan Debentures and the 1988 Plan Debentures are hereinafter
referred to collectively as the "Debentures." The following paragraphs discuss
provisions applicable to Debentures issued under either Plan. The Debentures
will bear interest at a floating rate of 1% less than the rate publicly
announced as its prime rate by Deposit Guaranty National Bank in Jackson,
Mississippi, but not more than the maximum legal rate permitted under the law.
Mississippi usury law permits interest at 15% on Debentures with a principal
amount exceeding $2,500 and 10% on Debentures in smaller amounts. Also, a
provision of the Mississippi law permits interest on Debentures in any
principal amounts at 5% above the Federal Reserve Bank's discount rate (4.75%
at December 30, 1994). There is no usury limit on Debentures issued between
July 1, 1986 and June 30, 1987 with a principal amount exceeding $125,000.
There is no usury limit on Debentures issued between July 1, 1987 and June 30,
1988 with a principal amount exceeding $75,000. There is no usury limit on
Debentures issued from and after July 1, 1988 with a principal amount exceeding
$25,000. The Company expects that the formula interest rate of the Debentures
will remain in compliance with the applicable usury rate, particularly in the
case of Debentures in amounts exceeding $2,500, because of the usury ceilings

                                       6
<PAGE>   7

applicable to Deposit Guaranty National Bank in establishing its prime rate.
The Company also believes that there is a sound legal basis for not treating
the right to convert the Debentures into Common Stock as constituting
additional interest for purposes of the Mississippi usury law. Accordingly, the
Company intends to treat the conversion right as not being interest subject to
the Mississippi usury law.

     A participant generally may not sell, assign, transfer, pledge or
otherwise hypothecate a Debenture except by will or intestate succession. With
the Company's consent, however, participants may pledge Debentures as security
for loans which will provide all or a part of the financing necessary to
purchase the Debentures. If a participant makes a permitted pledge of a
Debenture, the conversion privilege will not be exercisable during such time as
the Debenture is pledged. Upon notice from the participant and the lender to
which the Debenture was pledged that the Debenture has been released from the
pledge, the conversion privilege will again be exercisable. If a participant
sells, assigns, transfers, pledges or otherwise hypothecates a Debenture in a
manner not permitted under the Indenture or if a party forecloses on a
permitted pledge, the conversion right will permanently cease to exist. Should
the conversion right of a Debenture so terminate, the Company has the option,
but not the obligation, to prepay that Debenture.

     Debentures may be converted in whole or in part but no partial conversion
will be permitted if, following conversion, the remaining principal amount of
the Debenture would be less than $1,000. Shares of Series Stock will be issued
upon conversion of Debentures in whole shares only. If more than one Debenture
of the same series is surrendered for conversion at one time by the same
holder, the number of whole shares issuable upon conversion will be computed
upon the basis of the aggregate principal amount of such Debentures (or
portions thereof specified for conversion) so surrendered. Any fractional
interest in a share otherwise deliverable upon conversion will be settled by
payment in the form of a check or cash equal to the product obtained by
multiplying the applicable Conversion Price per share times such fractional
interest.

     The Company may redeem all or any part of the 1987-A, 1988-A, 1989-A,
1989-1, 1990-1, 1991-1 or 1992-1 Series Debentures on any January 1 or July 1
upon mailing a notice of redemption not less than 12 nor more than 18 months
prior to the date fixed for such redemption to the holders of the Debentures to
be redeemed at their last registered addresses. Except as provided below, if
only a part of the 1987-A, 1988-A, 1989-A, 1989-1, 1990-1, 1991-1 or 1992-1
Series Debentures are redeemed, the Company will specify the amount to be
redeemed, and the Trustee will select the particular Debentures to be redeemed,
using a method the Trustee deems fair and appropriate, which may provide for
the selection for redemption of portions of the principal amount of such
Debentures. If a holder of a 1987-A, 1988-A, 1989-A, 1989-1, 1990-1, 1991-1 or
1992-1 Series Debenture is not employed by an Eligible Employer, the Company
may designate for redemption any of such series of Debentures owned by such
person, regardless of whether the Company redeems any other of such series of
Debentures at the same time. If the Company calls for redemption the 1987-A,
1988-A, 1989-A, 1989-1, 1990-1, 1991-1 or 1992-1 Series Debentures issued
pursuant to the 1988 Plan, the Company may also redeem all of the 1988-1,
1989-2, 1990-2, 1991-2, and 1992-1 Series Debentures held by Outside Directors
on any January 1 or July 1 upon mailing a notice of redemption not less than 12
nor more than 18


                                       7
<PAGE>   8

months prior to the date fixed for such redemption to the holders of the 1988
Plan Debentures to be redeemed at their last registered addresses. Each
Debenture is redeemable for its principal amount together with accrued interest
to the date fixed for redemption. Purchasers may convert their Debentures at
any time prior to the close of business on the redemption date, subject to the
limitations on conversion privileges described above. A holder may redeem a
Debenture at its principal amount plus accrued interest on any January 1 or
July 1 more than one year after issuance of the Debenture.

     In the event that the Company enters into certain merger transactions,
becomes a party to a consolidation, or transfers all or substantially all of
its assets to another company, a supplemental Indenture will be executed to
provide that the holder of each Debenture then outstanding may convert such
Debenture into the kind and amount of shares of stock, cash or property
receivable upon the merger, consolidation, or transfer by a holder of the
number of shares of the applicable series of the Company's Convertible
Preferred Stock issuable upon conversion of such Debenture if such shares of
Preferred Stock had been outstanding immediately prior to such merger,
consolidation or transfer.

     Each Indenture under the 1988 Plan and under the 1980 Plan may be amended
to modify the rights of holders of the respective series of Debentures covered
thereby or otherwise modify the terms of such Indenture with the consent of the
Company, the Trustee and the holders of not less than 66 2/3% in aggregate
principal amount of the respective series of Debentures covered thereby, except
that the maturity date, the rate and time of payment for interest, the
conversion rights and certain other specified terms may not be modified without
the consent of all affected holders of the respective series of Debentures
covered thereby.

     Each Indenture defines an "Event of Default" as: (a) any default in the
payment of interest which continues for 30 days after the due date; (b) any
default in the payment of principal when due on the Debentures covered thereby;
(c) failure by the Company to observe or perform any of its other covenants and
agreements in the Debentures covered thereby or in such Indenture which
continues for 60 days after specific written notice of such failure has been
given to the Company by the Trustee or to the Company and the Trustee by
holders of at least 25% in principal amount of the Debentures covered thereby;
(d) certain events of default that cause other indebtedness of the Company to
be accelerated and which are not cured or otherwise remedied within specified
times; and (e) certain events of bankruptcy of the Company. Upon the happening
and during the continuance of an Event of Default, the Trustee or the holders
of at least 25% in aggregate principal amount of the Debentures covered thereby
may declare the principal and accrued interest on all Debentures covered
thereby to be due and payable immediately. The holders of a majority in
aggregate principal amount of the outstanding Debentures of the series so
affected will have the right to direct the time, method and place of conducting
any proceeding or any remedy available to the Trustee, or exercising any trust
or power conferred on the Trustee, but the Trustee, subject to its obligation
to exercise such of the rights and powers vested in it by each Indenture and to
use the same degree of care and skill in their exercise or use as a prudent man
would exercise or use under the circumstances in the conduct of his own
affairs, may decline to follow any such direction if the Trustee in good faith
determines that the proceedings so directed would involve it in a personal
liability or be in


                                       8
<PAGE>   9

conflict with any law or provision of such Indenture. The Company is required
by each Indenture to deliver annually to the Trustee a certificate from
appropriate officers certifying that, to the best of their knowledge, the
Company has satisfied all of its obligations under such Indenture during the
preceding fiscal year.

     In the event of any insolvency or bankruptcy proceedings, and any
receivership, liquidation, reorganization, or other similar proceedings in
connection therewith, relative to the Company or to its creditors, as such, or
to its property, and in the event of any proceedings for voluntary liquidation,
dissolution, or other winding up of the Company, whether or not involving
insolvency or bankruptcy, or in the event that any Debenture is declared due
and payable before its expressed maturity for any reason, then the holders of
Senior Indebtedness (as defined below) then outstanding shall be entitled to
receive payment in full of all such Senior Indebtedness before the holders of
the Debentures are entitled to receive any payment on account of principal or
interest upon the Debentures.

     No payment of principal or interest will be made on the Debentures during
any period that any Senior Indebtedness has matured and has not been paid in
full, refunded or replaced by new indebtedness.

     Senior Indebtedness is defined in each Indenture as the principal and
unpaid interest on (a) indebtedness for money borrowed (other than the
Debentures) for the payment of which the Company is responsible or liable,
whether outstanding on the date of execution of such Indenture or thereafter
created, incurred, assumed, or guaranteed, unless the instrument creating or
evidencing the same or pursuant to which the same is created provides that such
indebtedness is not superior in right of payment to the Debentures, and (b)
renewals, extensions, and deferrals of any such indebtedness. The Indentures do
not contain any limitations on the amount of Senior Indebtedness which may be
hereafter incurred by the Company. At December 23, 1996, the Company had
outstanding or guaranteed approximately $3,143,097 of indebtedness which would
constitute Senior Indebtedness under the Indentures.

     By reason of such subordination, in the event of the Company's insolvency,
certain general creditors of the Company may recover more ratably than holders
of the Debentures.


                   Description of Convertible Preferred Stock

     The Company is authorized to issue up to 20,000,000 shares of Preferred
Stock in one or more series (the "Preferred Stock"), and the Board is
authorized to determine the form, class, series and amounts in which the
Preferred Stock shall be issued; the price or prices (not less than par) at
which such stock shall be sold; the dividend rights, conversion rates,
conversion prices, par value, voting privileges, redemption prices, maturity
dates, and any other terms and conditions relative to the issuance of the
Preferred Stock. Pursuant to this authority, the Board has established the
1987-A, 1988-A, 1988-1, 1989-A, 1989-1, 1989-2, 1990-1, 1990-2, 1991-1, 1991-2,
and 1992-1 Series Convertible Preferred Stock for issuance in connection with
the Plans,


                                       9
<PAGE>   10

and has authorized the issuance of up to the following amount of such Preferred
Stock upon conversion of the respective Series Debentures:

<TABLE>
<CAPTION>
                  Preferred Stock Series         Number of Shares
                  ----------------------         ----------------
                           <S>                        <C>
                           1987-A                     30,000
                           1988-A                     66,000
                           1988-1                      5,000
                           1989-A                     16,500
                           1989-1                     45,000
                           1989-2                      5,000
                           1990-1                     52,367
                           1990-2                      5,000
                           1991-1                      4,000
                           1991-2                      5,000
                           1992-1                      5,000
</TABLE>

     The 1987-A, 1988-A, 1988-1, 1989-A, 1989-1, 1989-2, 1990-1, 1990-2,
1991-1, 1991-2, and 1992-1 Series Convertible Preferred Stock (sometimes
referred to collectively as the "Series Stock") each has a par value of $1.00
per share and is entitled to a quarterly non-cumulative preferential dividend
of $.05 per share, payable quarterly. Each share of Series Stock will be
convertible immediately into one share of the Company's Common Stock, subject
to adjustment in certain events, including an adjustment due to the economic
impact of the Spin-off. The adjustment for the Spin-off will be based on a
formula which will be adopted by the Board of Directors of the Company in order
to match the initial value of the Common stock issuable upon conversion to the
value of the Common stock of FM that would have been issuable had the Spin-off
not occurred. The Board of Directors is authorized to determine the appropriate
adjustments, if any, to the number of shares of the Company's Common Stock
issuable upon conversion of the Series Stock in the event of a
reclassification, recapitalization, merger, consolidation, reorganization,
issuance of warrants, rights or debentures, stock dividend, stock split or
reverse stock split, cash dividend, property dividend, including, without
limitation, a distribution of the stock of a subsidiary, combination or
exchange of shares, repurchase of shares, or any other change of the Company's
corporate structure, which, in the judgment of the Board of Directors
materially affects the value of the Company's shares subsequent to the grant of
a regular debenture option or subsequent to the conversion of a stock option
into a special debenture option.

     The Company will not issue fractional shares of Common Stock upon
conversion of Series Stock. In lieu of such fractions, the Company will pay to
the holder of Series Stock requesting conversion an amount in cash equal to the
market value of such fraction at the time of such conversion, as determined by
the Board.

     Any or all of the Series Stock outstanding at any time may be redeemed at
the option of the Company in whole or in part at any time upon not less than 20
nor more than 60 days notice to the record holders at their last addresses as
shown in the stock transfer records of the Company. The conversion right with
respect to any shares called for redemption will be lost


                                       10
<PAGE>   11

unless exercised no later than the day fixed for redemption. The redemption
price per share (the "Redemption Price") for Series Stock will be as follows
(plus in each case accrued and unpaid dividends per share on the respective
series of stock to the date of redemption):

<TABLE>
<CAPTION>
                                                 Redemption
              Series Stock                       Price Per Share
              ------------                       ---------------
              <S>                                <C>
              1987-A                             $ 8.9674
              1988-A                               9.8991
              1988-1                              10.0155
              1989-A                              10.8696
              1989-1                              10.8696
              1989-2                               8.5792
              1990-1                               6.8323
              1990-2                               5.8230
              1991-1                               6.0947
              1991-2                               5.7842
              1992-1                               4.8525
</TABLE>


     Under the Mississippi Business Corporation Act, no redemption could be
made if the Company were insolvent or would be rendered insolvent by such
redemption or if such redemption would reduce the Company's net assets below
the aggregate amount payable to holders of shares having prior or equal rights
to the Company's assets upon involuntary dissolution.

     Upon any voluntary or involuntary liquidation or dissolution of the
Company, the holders of the Series Stock will be entitled to a liquidation
preference equal to the Redemption Price for the appropriate series as set
forth above, plus any declared but unpaid dividends on the respective series of
stock, before any distribution of assets may be made to the holders of Common
Stock or other shares junior to the Series Stock. After the holders of the
Series Stock have received such amount, they may not participate in any
remaining assets and surplus funds of the Company. If the amounts which holders
of the Series Stock and any other series of Preferred Stock ranking equally as
to distribution of assets are entitled to receive in any voluntary or
involuntary liquidation or dissolution are not paid in full, the shares of
Series Stock and such other series of Preferred Stock will share ratably in any
distribution of assets in accordance with the amounts which would be payable on
such distribution if all amounts to which the holders of each such series are
entitled are paid in full.

     Additional series of Preferred Stock may be created and shares thereof may
be issued by the Company without any approval or action by the holders of the
Series Stock being necessary, and such additional series of stock may rank
equally with the Series Stock as to distribution of the Company's assets in the
event of liquidation or dissolution.



                                       11
<PAGE>   12

     The holders of shares of Series Stock will not be entitled to vote except
in certain circumstances as provided by the Mississippi Business Corporation
Act. Holders of Series Stock do not have preemptive rights.

                                   1995 Plan:

     Item 4 is not applicable to the 1995 Plan. See Item 3 for description of
Common Stock (including any provision of the Company's Amended and Restated
Articles of Incorporation or Bylaws having an effect on a change of control of
the Registrant).


ITEM 5.  Interests of Named Experts and Counsel

         Legal matters, other than those relating to tax consequences, in
         connection with the securities covered by this Registration Statement
         have been passed upon by J. Steve Chustz, General Counsel of the
         Company. Mr. Chustz also serves as General Counsel for various
         subsidiaries of the Company. As of December 11, 1996, Mr. Chustz
         beneficially owned 32,772 shares of the Company's Common Stock which
         includes 31,501 shares of the Company's Common Stock which Mr. Chustz
         has the right to acquire through the exercise of Non-Qualified Stock
         Options.

         The consolidated financial statements and financial statement
         schedules of the Company and subsidiaries as of June 30, 1996 and 1995
         and for each of the years in the three-year period ended June 30,
         1996, which are incorporated herein by reference, have been
         incorporated herein in reliance upon the reports, also incorporated
         herein by reference, of KPMG Peat Marwick LLP, independent certified
         public accountants, and upon the authority of said firm as experts in
         accounting and auditing. To the extent that KPMG Peat Marwick LLP
         audits and reports on financial statements of the Company and
         subsidiaries issued at future dates, and consents to the use of their
         reports thereon, such financial statements also will be incorporated
         herein by reference in reliance upon their reports and said authority.

ITEM 6.  Indemnification of Directors and Officers

         Subarticle E of Article 8 of the Mississippi Business Corporation Act
         ("MBCA") empowers a Mississippi corporation to indemnify against
         liability an individual who is made a party to any threatened, pending
         or completed action, suit or proceeding, whether civil, criminal,
         administrative or investigative, formal or informal (a "Proceeding"),
         because such person is or was a director. To be eligible for
         indemnification, the director must have conducted himself in good
         faith and in a manner such person reasonably believed to be in or not
         opposed to the best interests of the corporation and, with respect to
         any criminal action or proceeding, had no reasonable cause to believe
         such person's conduct was unlawful. Liability indemnified against
         includes the obligation to pay a judgment, settlement, penalty, fine
         or reasonable expenses incurred with respect to a Proceeding. The MBCA


                                       12
<PAGE>   13

         precludes a corporation from indemnifying a director in connection
         with a Proceeding by or in the right of the corporation in which the
         director was adjudged liable to the corporation or in connection with
         any other Proceeding charging improper personal benefit to a director,
         whether or not involving action in the director's official capacity,
         in which the director was adjudged liable on the basis that personal
         benefit was improperly received by the director.

         Subarticle E further provides that if a director is wholly successful,
         on the merits or otherwise, in the defense of any Proceeding to which
         he was a party because he is or was a director, the corporation must
         indemnify him against reasonable expenses incurred in connection with
         the Proceeding. Also, a court may order a company to indemnify a
         director if it determines the director is fairly and reasonably
         entitled to indemnification in view of all of the relevant
         circumstances. Subarticle E also allows corporations to indemnify
         officers, employees or agents to the same extent as directors, and
         provides for mandatory or court-ordered indemnification for these
         persons as described above. Finally, the MBCA allows corporations to
         purchase and maintain insurance on behalf of directors, officers,
         employees or agents against liability asserted against or incurred by
         him in that capacity or arising from his status as such, whether or
         not the corporation would have the power to indemnify such person
         against liability under Subarticle E.

         The Company's Bylaws provide for indemnification of Company's officers
         and directors to the fullest extent allowed by Mississippi law and
         further permit such indemnification with respect to other employees
         and agents. The Company entered into indemnification agreements with
         certain of its officers and its directors. The effect of these
         agreements is to add to the indemnification rights otherwise granted a
         contractual right to such indemnification.

         The Company will have directors' and officers' liability insurance
         which protects each director or officer from certain claims and suits,
         including shareholder derivative suits, even where the director may be
         determined to not be entitled to indemnification under the MBCA and
         claims and suits arising under the Securities Act. The policy may also
         afford coverage under circumstances where the facts do not justify a
         finding that the director or officer acted in good faith and in a
         manner that was in or not opposed to the best interests of the
         Registrant.

         The foregoing represents a summary of the general effect of the MBCA,
         the Company's Amended and Restated Articles of Incorporation and
         Bylaws and directors' and officers' liability insurance coverage for
         purposes of general description only.

ITEM 7.  Exemption from Registration Claimed

         Not applicable.




                                       13
<PAGE>   14

ITEM 8.  Exhibits


         4.1   Amended and Restated Articles of Incorporation of the Company
               are incorporated by reference to Exhibit 3.1 of the Company's
               S-1 Registration Statement (file number 333-15789).

         4.2   Bylaws of the Company are incorporated by reference to Exhibit
               3.2 of the Company's S-1 Registration Statement (file number
               333-15789).

         4.3   Rights Agreement dated as of October 30, 1996, by and between
               the Company and KeyCorp Shareholder Services, Inc. is
               incorporated by reference to Exhibit 4 of the Company's S-1
               Registration Statement (file number 333-15789).

         4.4   ChemFirst Inc. 1995 Long-Term Incentive Plan.

         4.5   ChemFirst Inc. 1988 Long-Term Incentive Plan.

         4.6   ChemFirst Inc. 1980 Long-Term Incentive Plan.

         4.7   Indentures in the form of that Indenture dated November 14, 1994
               have been entered into with regard to all series of Debentures 
               registered under this Registration Statement.

         4.8   Supplemental Indentures in the form of that Supplemental
               Indenture dated December 23, 1996 were entered into with 
               regard to all series of Debentures registered under this 
               Registration Statement.

         5.1   Opinion of J. Steve Chustz as to legality of securities being
               registered.

         23.1  Consent of J. Steve Chustz is contained within the opinion of
               counsel filed as Exhibit 5.1.

         23.2  Consent of KPMG Peat Marwick LLP.

         25.1  Statement of Eligibility of Trustee

ITEM 9.  Undertakings

(a)  The undersigned Registrant hereby undertakes:

     (1) To file, during any period in which offers or sales are being made, a
         post-effective amendment to this registration statement:

         (i)   To include any prospectus required by Section 10(a)(3) of the
               Securities Act of 1933;



                                       14
<PAGE>   15

         (ii)  To reflect in the prospectus any facts or events arising after
               the effective date of the registration statement (or the most
               recent post-effective amendment thereof) which, individually or
               in the aggregate, represent a fundamental change in the
               information set forth in the registration statement;
               notwithstanding the foregoing, any increase or decrease in
               volume of securities offered (if the total dollar value of
               securities offered would not exceed that which was registered)
               and any deviation from the low or high end of the estimated
               maximum offering range may be reflected in the form of
               prospectus filed with the Commission pursuant to Rule 424(b) if,
               in the aggregate, the changes in volume and price represent no
               more than a 20 percent change in the maximum aggregate offering
               price set forth in the "Calculation of Registration Fee" table
               in the effective registration statement;

         (iii) To include any material information with respect to the plan of
               distribution not previously disclosed in the registration
               statement or any material change to such information in the
               registration statement.

         Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not
         apply if the registration statement is on Form S-3, Form S-8 or Form
         F3 and the information required to be included in a post-effective
         amendment by those paragraphs is contained in periodic reports filed
         with or furnished to the Commission by the Registrant pursuant to
         Section 13 or Section 15(d) of the Securities Exchange Act of 1934
         that are incorporated by reference in the registration statement.

     (2) That, for the purpose of determining any liability under the
         Securities Act of 1933, each such post-effective amendment shall be
         deemed to be a new registration statement relating to the securities
         offered therein, and the offering of such securities at that time
         shall be deemed to be the initial bona fide offering thereof.

     (3) To remove from registration by means of a post-effective amendment any
         of the securities being registered which remain unsold at the
         termination of the offering.

(b)  The undersigned Registrant hereby undertakes that, for purposes of
     determining any liability under the Securities Act of 1933, each filing of
     the Registrant's annual report pursuant to Section 13(a) or Section 15(d)
     of the Securities Exchange Act of 1934 (and, where applicable, each filing
     of an employee benefit plan's annual report pursuant to Section 15(d) of
     the Securities Exchange Act of 1934) that is incorporated by reference in
     the registration statement shall be deemed to be a new registration
     statement relating to the securities offered therein, and the offering of
     such securities at that time shall be deemed to be the initial bona fide
     offering thereof.

(c)  Insofar as indemnification for liabilities arising under the Securities
     Act of 1933 may be permitted to directors, officers and controlling
     persons of the Registrant pursuant to the foregoing provisions, or
     otherwise, the Registrant has been advised that in the opinion of the
     Securities and Exchange Commission such indemnification is against public
     policy as expressed in the Act and is, therefore, unenforceable. In the
     event that a claim


                                       15
<PAGE>   16

     for indemnification against such liabilities (other than the payment by
     the Registrant of expenses incurred or paid by a director, officer or
     controlling person of the Registrant in the successful defense of any
     action, suit or proceeding) is asserted by such director, officer or
     controlling person in connection with the securities being registered, the
     Registrant will, unless in the opinion of its counsel the matter has been
     settled by controlling precedent, submit to a court of appropriate
     jurisdiction the question whether such indemnification by it is against
     public policy as expressed in the Act and will be governed by the final
     adjudication of such issue.



                                       16
<PAGE>   17
                                   SIGNATURES


     Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Jackson, State of Mississippi, on December 23, 1996.



                                             CHEMFIRST INC.



                                             BY: /s/ J. Kelley Williams       
                                                 -----------------------------
                                                 J. Kelley Williams, President


     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.

        SIGNATURE          TITLE                              DATE
        ---------          -----                              ----

/s/ J. Kelley Williams     Chairman of the Board              December 23, 1996
- -------------------------  of Directors, Chief Executive 
J. Kelley Williams         Officer (Principal Executive  
                           Officer)                      
                                                         

/s/ Thomas G. Tepas        President and                      December 23, 1996
- -------------------------  Chief Operating Officer  
Thomas G. Tepas                                     

/s/ R. Michael Summerford  Vice President and Chief           December 23, 1996
- -------------------------  Financial Officer              
R. Michael Summerford      (Principal Financial Officer)  
                                                          

/s/ Troy B. Browning       Controller                         December 23, 1996
- -------------------------  (Principal Accounting Officer)  
Troy B. Browning                                           

/s/ Richard P. Anderson    Director                           December 23, 1996
- -------------------------
Richard P. Anderson

/s/ Paul A. Becker         Director                           December 23, 1996
- -------------------------
Paul A. Becker


<PAGE>   18

/s/ James W. Crook         Director                           December 23, 1996
- -------------------------
James W. Crook

/s/ Michael J. Ferris      Director                           December 23, 1996
- -------------------------
Michael J. Ferris

/s/ James E. Fligg         Director                           December 23, 1996
- -------------------------
James E. Fligg

/s/ Robert P. Guyton       Director                           December 23, 1996
- -------------------------
Robert P. Guyton

/s/ Charles P. Moreton     Director                           December 23, 1996
- -------------------------
Charles P. Moreton

/s/ Paul W. Murrill        Director                           December 23, 1996
- -------------------------
Paul W. Murrill

/s/ William A. Percy, II   Director                           December 23, 1996
- -------------------------
William A. Percy, II

/s/ Dan F. Smith           Director                           December 23, 1996
- -------------------------
Dan F. Smith

/s/ Leland R. Speed        Director                           December 23, 1996
- -------------------------
Leland R. Speed

/s/ R. Gerald Turner       Director                           December 23, 1996
- -------------------------
R. Gerald Turner





<PAGE>   19
                               Index to Exhibits

<TABLE>
<CAPTION>
  Exhibit No.       Description
  -----------       -----------
     <S>            <C>
     4.1            Amended and Restated Articles of Incorporation of the
                    Company are incorporated by reference to Exhibit 3.1 of the
                    Company's S-1 Registration Statement (file number
                    333-15789).

     4.2            Bylaws of the Company are incorporated by reference to
                    Exhibit 3.2 of the Company's S-1 Registration Statement
                    (file number 333-15789)

     4.3            Rights Agreement dated as of October 30, 1996, by and
                    between the Company and KeyCorp Shareholder Services, Inc.
                    is incorporated by reference to Exhibit 4 of the Company's
                    S-1 Registration Statement (file number 333-15789)

     4.4            ChemFirst Inc. 1995 Long-Term Incentive Plan

     4.5            ChemFirst, Inc. 1988 Long-Term Incentive Plan.

     4.6            ChemFirst, Inc. 1980 Long-Term Incentive Plan.

     4.7            Indentures in the form of that Indenture dated November 14,
                    1994 have been entered into with regard to all series of 
                    Debentures registered under this Registration Statement.

     4.8            Supplemental Indentures in the form of that Supplemental
                    Indenture dated December 23, 1996 were entered into with
                    regard to all series of Debentures registered under this 
                    Registration Statement.

     5.1            Opinion of J. Steve Chustz as to legality of securities
                    being registered.

     23.1           Consent of J. Steve Chustz is contained within the opinion
                    of counsel filed as Exhibit 5.1.

     23.2           Consent of KPMG Peat Marwick LLP.

     25.1           Statement of Eligibility of Trustee
</TABLE>


<PAGE>   1
                                                                    EXHIBIT 4.4

                               CHEMFIRST INC.
                         1995 LONG TERM INCENTIVE PLAN


1.       PURPOSE

         The purpose of this Plan is to further the growth in earnings and
         market appreciation of ChemFirst Inc. by providing long-term
         incentives to directors, officers, and employees of the Company and
         its subsidiaries, partnerships and joint ventures. The Company intends
         that the Plan will help attract, retain and motivate officers,
         directors and key employees of high caliber and good potential and
         promote the alignment of the participants' interests with that of the
         Company's shareholders.

2.       DEFINITIONS

         For purposes of this Plan, the following terms shall have the meanings
         set forth below:

         "Annual Incentive" means an amount payable pursuant to any short term
         incentive compensation plan or sales incentive plan of the Company.

         "Award" means an award granted under this Plan.

         "Base Salary" means the regular salary paid to an employee. Base
         Salary shall not include bonuses or other forms of compensation which
         are not considered regular earnings by the Company.

         "Board" means the Board of Directors of the Company.

         "Cash Retainer" means the regular retainer payment paid to a Director.
         Cash Retainer shall not include meeting fees or committee fees or
         other forms of compensation which are not considered a regular
         component of a Director's retainer.

         "Change in Control" shall have the meaning set forth in Paragraph 19.

         "Code" means the Internal Revenue Code of 1986, as amended from time
         to time.

         "Committee" means the committee appointed by the Board to administer
         the Plan. The Committee shall consist of two or more members of the
         Board who are "disinterested persons" within the meaning of Rule
         16b-3.

         "Company" means ChemFirst Inc.

         "Conversion Award" means an Award issued in place of cash
         compensation, pursuant to Paragraph 7 of the Plan.


<PAGE>   2

         "Director" means a member of the Board of Directors of the Company or
         a Subsidiary.

         "Employee" means any officer or other employee of the Company or a
         Subsidiary.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended
         from time to time.

         "Exchange Date" means the date upon which cash compensation is
         replaced by a Conversion Award. For purposes of:

         (a) base salary, that date shall be the first business day of January.

         (b) annual incentives, that date shall be the date on which the annual
             incentive is paid.

         (c) director retainer payments, that date shall be the first day each
             year that a retainer payment is made.

         "Fair Market Value" means, as of any date, the average of the highest
         and lowest prices at which the Stock is traded on such date on the
         principal market on which the Stock is traded, or if the Stock is not
         traded on such date, on the immediately preceding date on which the
         Stock is traded.

         "Incentive Stock Option" means an option meeting the requirements of
         Section 422 of the Code.

         "Nonemployee Director" means a member of the Board who is not an
         employee of the Company or any Subsidiary.

         "Nonqualified Stock Option" means an option that is not an Incentive
         Stock Option.

         "Participant" means an Employee or Director who has been selected by
         the Committee to receive an Award under the Plan.

         "Performance Period" means the period of time designated by the
         Committee in which an Award may be earned.

         "Performance Shares" means shares of Stock that may be earned under
         the Plan, subject to the satisfaction of certain performance criteria
         over a Performance Period.

         "Performance Units" means a dollar denominated unit that may be earned
         under the Plan, subject to the satisfaction of performance criteria
         over a Performance Period.

         "Plan" means this ChemFirst Inc. 1995 Long Term Incentive Plan, as
         amended from time to time.




                                       2
<PAGE>   3

         "Restricted Stock" means shares of Stock which may be earned under the
         Plan, subject to continued employment or other vesting criteria.

         "Rule 16b-3" means Rule 16b-3 promulgated by the Securities and
         Exchange Commission pursuant to the Exchange Act, as amended from time
         to time.

         "Share Unit" is the right to receive an amount of cash or Stock equal
         to the value of a share of Stock at a future date.

         "Stock" means the common stock of the Company.

         "Stock Option" means an option granted pursuant to the Plan, whether
         an Incentive Stock Option or a Nonqualified Stock Option.

         "Subsidiary" means any corporation, partnership, joint venture or
         other entity in which the Company has at least a fifty percent
         beneficial ownership interest.

3.       ADMINISTRATION

         The Plan shall be administered by the Board and/or the Committee, as
         the Board shall determine in its sole discretion from time to time. In
         exercising its discretion with respect to the administration of the
         Plan, the Board shall have the option of administrating only certain
         aspects of the Plan, such as the determination and approval of Awards
         to be granted under the Plan, and delegating the administration of the
         remaining aspects of the Plan to the Committee. The Board and/or the
         Committee, as the case may be, shall have full and final authority in
         its discretion to conclusively interpret the provisions of the Plan
         and to decide all questions of fact arising in its application; to
         determine the Employees and Directors to whom Awards shall be made
         under the Plan; to determine the type of Award to be made and the
         amount, size and terms of each such Award; to determine the time when
         Awards will be granted to Employees and Directors; and to make all
         other determinations necessary or advisable for the administration of
         this Plan. Notwithstanding the above, the Company's Chief Executive
         Officer or some other officer designated by the Board or the
         Committee, as the case may be, shall have the authority to grant for
         purposes of Section 16 of the Exchange Act, Awards to newly hired
         employees who are not executive officers of the Company, subject to
         such limitations as may be established by the Board or the Committee,
         as the case may be. All provisions elsewhere in this Plan dealing with
         administration of and decisions under this Plan which refer to the
         Committee shall be deemed to refer to the Board whenever the Board is
         administrating, pursuant to this Section 3, the aspect of the Plan to
         which said provision relates.

4.       PARTICIPATION

         The Committee, in its discretion, may grant Awards to any Employee or
         Director, subject to the provisions of the Plan. No Employee or
         Director shall be entitled as a matter of 



                                       3
<PAGE>   4

         right to receive an Award, nor shall the grant of an Award entitle an
         Employee or Director to receive any future Award.

5.       SHARES SUBJECT TO THE PLAN

         (a)   A maximum of 980,000 shares of Stock may be issued pursuant to
               the Plan provided, however, that no more than 240,000 shares may
               be granted in the form of Restricted Stock Awards. The total
               number of shares authorized and the number of shares which may
               be granted in the form of Restricted Stock Awards are subject to
               adjustment pursuant to Paragraph 16. Shares issued pursuant to
               the Plan shall be either authorized but unissued shares of Stock
               or shares of Stock held as treasury stock.

         (b)   To the extent that any Award is canceled or forfeited, or
               terminates, expires, or lapses for any reason, any unissued
               shares of Stock subject to such Award shall again be available
               for grant under the Plan.

         (c)   Any Awards granted in substitution for awards or rights issued
               by a company that is acquired by the Company or a Subsidiary
               shall not reduce the number of Shares available for grant under
               the Plan.

         (d)   Subject to adjustment pursuant to Paragraph 16, the maximum
               number of shares of Stock with respect to which any Employee may
               be awarded Stock Options, Restricted Stock or Stock Appreciation
               Rights in any calendar year under Paragraph 6 shall be 60,000
               shares.

6.       AWARDS TO EMPLOYEES AND DIRECTORS

         As the Committee may determine, the following types of Awards may be
         granted under the Plan to Employees and Directors, either alone, in
         combination or an alternative basis:

         (a)   Stock Options: Stock Options shall be Incentive Stock Options or
               Nonqualified Stock Options, as determined by the Committee.
               Stock Options shall be granted with an exercise price which
               shall not be less than one hundred percent of Fair Market Value
               on the date of grant.

               Incentive Stock Options shall comply with the provisions of
               Section 422 of the Code and to the extent the aggregate fair
               market value (determined as of the time the Incentive Stock
               Option is granted) of the stock with respect to which Incentive
               Stock Options are exercisable for the first time by any
               individual during any calendar year under all plans of the
               Company and its parent and Subsidiaries exceeds $100,000, such
               options shall be treated as Nonqualified Stock Options.

               A Stock Option may be exercised at such times as may be
               specified by the Committee at the time of grant, provided that
               no Stock Option granted under this Paragraph 6 shall be
               exercisable later than ten years after grant, or, in the case of




                                       4
<PAGE>   5

               Participants subject to Section 16 of the Exchange Act, earlier
               than six months after grant and provided further that the
               Committee may at any time before complete termination of a stock
               option, accelerate the time or times at which such option may be
               exercised, if whole or in part.

         (b)   Stock Appreciation Rights: Stock Appreciation Rights shall
               entitle a Participant to receive upon exercise, for each stock
               appreciation right exercised, (i) the excess of the Fair Market
               Value of a share of Stock at the time of exercise, over a price
               specified by the Committee, multiplied by (ii) the number of
               Stock Appreciation Rights exercised. The price specified by the
               Committee shall not be less than one hundred percent of Fair
               Market Value at the time the Stock Appreciation Right was
               granted, or, if connected with a previously issued stock option,
               the Fair Market Value at the time such previously issued stock
               option was granted. A Stock Appreciation Right may be granted in
               tandem with all or any portion of a previously or
               contemporaneously granted stock option (including, in addition
               to Stock Options granted under the Plan, options granted under
               other plans of the Company), or not in connection with a stock
               option.

               Payment pursuant to a Stock Appreciation Right may be made in
               the form of Stock, cash or a combination thereof, as the
               Committee may determine. A Stock Appreciation Right may be
               exercised at such times as may be specified by the Committee,
               either at the time of grant or thereafter, provided that no
               Stock Appreciation Right shall be exercisable earlier than six
               months after grant nor later than ten years after grant.

         (c)   Performance Shares and Performance Units: An Award of
               Performance Shares or Performance Units shall entitle a
               Participant to receive Stock or a cash payment specified by the
               Committee, depending upon the attainment of performance criteria
               over a Performance Period. The Performance Period and
               performance criteria shall be specified by the Committee and may
               relate to the performance of the Company or one or more
               Subsidiaries or a combination thereof. Other than an Award
               intended to qualify under Section 162(m) of the Code, the
               Committee may adjust previously established performance criteria
               and other terms and conditions of an Award, at any time prior to
               the determination of the payment amount, to reflect major
               unforeseen events such as changes in laws, regulations or
               accounting policies or procedures, mergers, acquisitions or
               divestitures or extraordinary, unusual or non-recurring items or
               events, in each case in order to prevent dilution or enlargement
               of rights.

               Payment pursuant to an Award of Performance Shares or
               Performance Units shall be made following the Committee's
               determination of the extent to which the performance criteria
               were satisfied, and shall be made in the form of Stock, cash or
               a combination thereof, as the Committee may determine. Payment
               shall be made as promptly as practicable following the end of
               the Performance Period unless deferred subject to such terms and
               conditions as may be prescribed by the Committee. The Committee
               may authorize payments in Stock (in the form of any 



                                       5
<PAGE>   6

               Award available under the Plan) under any previously existing
               performance unit or performance share plans of the Company or
               any Subsidiary.

         (d)   Restricted Stock: Awards of Restricted Stock shall be issued in
               the name of a Participant as soon as practicable following the
               date of grant by the Committee. Such Awards shall be subject to
               such conditions, terms and restrictions (including
               performance-based or employment-based vesting, forfeiture
               conditions and transfer restrictions) and shall be for such
               period or periods as shall be determined by the Committee or as
               expressly stated in the Plan. The Committee shall have the power
               to permit an acceleration of the expiration of the applicable
               restriction period with respect to all or part of the shares
               awarded to a Participant pursuant to a Restricted Stock Award.

               During the restricted period, a Participant holding shares of
               Restricted Stock shall have all the rights of a shareholder,
               including the right to vote and receive dividends, but shall not
               sell, assign, transfer, exchange, pledge, hypothecate or
               otherwise encumber such shares. Shares of Restricted Stock shall
               bear such legends as the Company may specify, until such time as
               the restrictions on the shares shall lapse, as determined by the
               Committee.

         (e)   Supplemental Payments: Subject to the Committee's discretion,
               any Award under this Paragraph 6 may provide for a supplemental
               payment by the Company or a Subsidiary to a Participant after
               the exercise, payment or lapse of restrictions under the Award.
               Such supplemental payments shall be subject to such terms and
               conditions as shall be provided by the Committee at the time of
               grant, provided that in no event shall the amount of each
               payment exceed:

               (i)  In the case of a Stock Option, the excess of Fair Market
                    Value on the date of exercise over the Stock Option
                    exercise price, multiplied by the number of shares for
                    which such Stock Option is exercised, or

               (ii) In the case of a Stock Appreciation Right, Performance
                    Unit, Performance Share or Restricted Stock Award, the
                    value of the shares and other consideration issued in
                    payment of such Award.

7.       CONVERSION AWARDS - EMPLOYEES

         (a)   Employees designated by the Committee may elect, subject to the
               following provisions and such terms and conditions as shall be
               determined by the Committee, to receive Share Units in exchange
               for cash compensation otherwise payable to such individuals by
               the Company:

               (i)  Share Units may be acquired by an Employee at a per share
                    exchange price of eighty-five percent of the Fair Market
                    Value of a share of stock determined as of the Exchange
                    Date.



                                       6
<PAGE>   7

               (ii) Share Units issued to Employees shall be subject to those
                    conditions, terms and restrictions as the Committee may
                    require and which shall lapse with respect to twenty
                    percent of such share units commencing on the first
                    anniversary of the Exchange Date, with an additional forty
                    percent becoming vested on the second anniversary date, and
                    the remaining forty percent becoming vested on the third
                    anniversary of the Exchange Date (the "Restricted Period").

         (b)   At a time specified by the Committee, Employees may, at least
               six months prior to the Exchange Date for base salary and prior
               to the commencement of the applicable fiscal year of the Company
               for annual incentives, make an irrevocable election to defer up
               to one year's base salary and/or annual incentive (for purposes
               of this Paragraph, the "Deferral Amount") and exchange it for
               Share Units in accordance with the following provisions and such
               other terms, conditions and limitations as shall be determined
               by the Committee from time to time:

               (i)  An Employee's base salary may be exchanged for Share Units
                    in the following manner:

                    (1)   If an Employee elects to receive Share Units, he or
                          she shall receive that number of units equal in value
                          to the Deferral Amount, as determined pursuant to
                          Subparagraph (a)(i) above. The Deferral Amount shall
                          be deducted from the Employee's base salary in equal
                          installments beginning the month of the Exchange
                          Date.

                    (2)   Except as otherwise determined by the Committee, if
                          the Employee's employment with the Company or a
                          Subsidiary is terminated for any reason by the
                          Company or Subsidiary or the Employee during the
                          Restricted Period, all such non-vested share units
                          shall be forfeited and returned to the Company and
                          the Employee shall receive a payment equal to, (x)
                          the lower of the Fair Market Value of the Share Units
                          on the date of termination or the Deferral Amount,
                          multiplied by (y) the percentage of the Deferral
                          Amount collected by the Company prior to the date of
                          termination.

               (ii) An Employee's annual incentive may be exchanged on the
                    Exchange Date for Share Units in the following manner:

                    (1)   If an Employee elects to receive Share Units, he or
                          she shall receive that number of units equal in value
                          to the Deferral Amount, as determined pursuant to
                          Subparagraph (a)(i) above.

                    (2)   Except as otherwise determined by the Committee, if
                          the Employee's employment with the Company or a
                          Subsidiary is terminated for any reason by the
                          Company or the Subsidiary or the


                                       7
<PAGE>   8

                          Employee during the Restricted Period, all such
                          non-vested share units shall be forfeited and the
                          Employee shall receive a payment equal to the lower
                          of the Fair Market Value of the share units on the
                          date of termination or the Deferral Amount.

         (c)   Dividends earned pursuant to the Share Units issued in (a) and
               (b) above, shall be reinvested in the form of additional Share
               Units.

         (d)   Once the Share Units become vested, the Company shall make
               payment in the form of cash or stock, as determined by the
               Committee, in an amount equal to the Fair Market Value of the
               Share Units, at a time designated by the Committee.

8.       CONVERSION AWARDS - DIRECTORS

         Directors may make an irrevocable election, at least six months prior
         to the Exchange Date, to defer up to one year's cash retainer payments
         (for purposes of this Paragraph, the "Deferral Amount") in exchange
         for Share Units in accordance with the following provisions:

         (a)   If a Director elects to receive Share Units, he or she shall
               receive, on the Exchange Date, that number of shares equal in
               value to the Deferral Amount using a per share exchange price of
               eighty-five percent of the Fair Market Value of a share of Stock
               determined as of the Exchange Date. The Deferral Amount shall be
               deducted in equal installments from the Director's retainer
               payments when such retainer payments are otherwise distributed,
               beginning the first quarter of the calendar year.

         (b)   Share Units received by a Director shall be subject to the
               following restrictions for a period of five years (the
               "Restricted Period"):

                    (i)   the Share Units may not be sold, transferred,
                          assigned, pledged or otherwise encumbered or disposed
                          of during the Restricted Period, and

                    (ii)  the Director shall have remained in the service of
                          the Company or a Subsidiary until the expiration of
                          the Restricted Period.

         (c)   Notwithstanding (b) (ii) above, in the event a Director's
               service with the Company or a Subsidiary is terminated after the
               Exchange Date but before the expiration of the Restricted
               Period, the following will occur:

                    (i)   if such termination is due to death or disability,
                          all such Share Units shall immediately vest, or

                                       8
<PAGE>   9


                    (ii)  if such termination is for normal retirement (as
                          determined by the Committee), all such Share Units
                          shall vest upon the expiration of the Restricted
                          Period, or

                    (iii) if such termination is for any other reason than
                          specified in (c)(i) or (c)(ii) above, all such Share
                          Units shall be forfeited and the Director shall
                          receive a payment equal to (x) the lower of the Fair
                          Market Value of the Share Units on the date of
                          termination or the Deferral Amount, multiplied by (y)
                          the percentage of the Deferral Amount collected by
                          the Company prior to the date of termination.

         (d)   Dividends earned pursuant to the Share Units issued in (a)
               above, shall be reinvested in the form of additional Share
               Units.

         (e)   Once the Share Units become vested, the Company shall make
               payment in the form of Shares of Stock in an amount equal to the
               number of such Share Units. Payment shall be made within ninety
               days of vesting.

9.       STOCK OPTION EXERCISE

         (a)   The exercise price for Stock Options issued under the Plan shall
               be paid in full when the Stock Option is exercised. The exercise
               price may be paid (i) in cash, (ii) in whole shares of Stock
               owned by the option holder at least six months prior to
               exercise, valued at Fair Market Value on the date of exercise,
               or (iii) by a combination of such methods of payment. In
               addition, a Stock Option holder may exercise the Stock Option by
               providing assurance from a broker registered under the Exchange
               Act of the delivery of the proceeds of an imminent sale of the
               Stock to be issued pursuant to the exercise of the Stock Option,
               such sale to be made at the direction of the Stock Option
               holder. In the case of Employees and Directors, the foregoing
               shall be subject to such terms, conditions and limitations as
               the Committee may specify from time to time.

         (b)   The holder of a Stock Option shall have none of the rights of a
               shareholder until exercise of the Option and the issuance of
               shares of Stock pursuant to it.

10.      GENERAL RESTRICTIONS

         (a)   The Committee may, in its sole discretion, elect to defer the
               exercise, vesting or payment of an Award (or any part thereof)
               granted under the Plan, except Awards granted to Nonemployee
               Directors under Paragraph 8 above, if necessary to avoid the
               loss of a deduction by the Company under Section 162(m) of the
               Code.

                                       9
<PAGE>   10
11.      RIGHTS OF A PARTICIPANT

         A Participant receiving any Award under the Plan, unless otherwise
         provided by the Plan or decided by the Committee, shall have no rights
         as a shareholder unless and until certificates for shares of stock are
         issued to him.

12.      TERMINATION OF EMPLOYMENT OR SERVICE

         (a)   Except as provided in Paragraphs 7 and 8, the effect of
               termination of a Participant's employment or service with the
               Company upon any outstanding Awards shall be determined by the
               Committee in its sole discretion as specified in the
               documentation evidencing a particular award.

         (b)   Nothing in the Plan or in any agreement entered into pursuant to
               the Plan shall confer upon any Participant the right to continue
               in the employment or service of the Company or its Subsidiaries
               as an Employee or Director, or affect any right which the
               Company or such Subsidiaries may have to terminate the
               employment or service of such Participant. For purposes of this
               Plan and notwithstanding anything to the contrary contained
               elsewhere in this Plan, no termination of a Participant's
               employment or Board service with the Company within the meaning
               of this Plan shall be deemed to have occurred by virtue of the
               Company entering into any agreement with respect to, the public
               announcement of, the approval by the Company's shareholders or
               directors of, or the consummation of, any transaction or series
               of integrated transactions, if, prior to the occurrence of such
               transaction or series of integrated transactions, a majority of
               the Continuing Directors (as defined in Section 19 hereof) then
               in office determine that such transaction or series of
               integrated transactions should not be treated as a termination
               of a Participant's employment or Board service with the Company
               within the meaning of this Plan.

13.      WITHHOLDING

         The Company shall have the right to withhold from any payments made
         under this Plan, or to collect as a condition of payment, any taxes
         required by law to be withheld. At any time when a Participant is
         required to pay to the Company an amount required to be withheld under
         applicable income tax laws in connection with a distribution of shares
         of Stock pursuant to this Plan, the Participant may satisfy this
         obligation in whole or in part by electing to have the Company
         withhold from such distribution shares of Stock having a value equal
         to the amount required to be withheld. The value of the shares of
         Stock to be withheld shall be based on the Fair Market Value of the
         Stock on the date that the amount of tax to be withheld shall be
         determined. The rules governing such withholding elections, including
         the date or dates by which such an election must be made, shall be
         determined by the Committee as necessary and in compliance with Rule
         16b-3.



                                      10
<PAGE>   11

14.      RESTRICTIONS ON TRANSFER

         Except as otherwise provided in this Paragraph 14, no Stock Option or
         other Award under the Plan shall be assignable or transferable by the
         Participant other than by will or by the laws of descent and
         distribution and all Stock Options shall be exercisable during the
         Participant's lifetime only by the Participant. The Committee may, in
         its sole discretion, when and if permitted by Rule 16b-3, establish
         guidelines providing for the irrevocable transfer, without payment of
         consideration, of any Stock Option, other than Incentive Stock
         Options, by the Participant to a member of the Participant's immediate
         family or to a trust or partnership whose beneficiaries are members of
         the Participant's immediate family. For purposes of this Paragraph 14,
         the term "immediate family" shall include the Participant's spouse,
         children and grandchildren.

15.      NON-UNIFORM DETERMINATIONS

         The Committee's determinations under the Plan (including without
         limitation determinations of the officers, Employees and Directors to
         receive Awards, the form, amount and timing of such Awards, the terms
         and provisions of such Awards and the agreements evidencing same, and
         the establishment of values and performance targets) need not be
         uniform and may be made by the Committee selectively among Employees
         or Directors who receive, or are eligible to receive, Awards under the
         Plan, whether or not such Employees or Directors are similarly
         situated.

16.      ADJUSTMENTS IN STOCK AND RELATED ADJUSTMENTS

         In the event of a reclassification, recapitalization, merger,
         consolidation, reorganization, issuance of warrants or other rights,
         stock dividend, stock split or reverse stock split, cash dividend,
         property dividend, including, without limitation, a distribution of
         the stock of a Subsidiary, combination or exchange of shares,
         repurchase of shares, or any other change in the capital structure of
         the Company in order to prevent dilution or enlargement of rights, the
         Committee shall determine the appropriate adjustments, if any, to (a)
         the number of shares of stock which may be issued under the Plan, (b)
         the number of shares issuable and the exercise price per share
         pursuant to an outstanding Award theretofore granted under this Plan
         and, (c) the number and kind of shares which may underlie an Award
         granted pursuant to Paragraph 5(d).

17.      AMENDMENT OR TERMINATION

         The Committee at any time and from time to time may suspend,
         terminate, modify or amend the Plan; provided, however, that an
         amendment which requires stockholder approval in order for the Plan to
         continue to comply with Rule 16b-3, Section 162(m), or Section 422 of
         the Code or any other law, regulation or stock exchange requirement
         shall not be effective unless approved by the requisite vote of
         stockholders. No suspension, termination, modification or amendment of
         the Plan may adversely affect any Award previously granted without the
         written consent of the Participant.



                                      11
<PAGE>   12

18.      DURATION OF THE PLAN

         The Plan shall remain in effect until all Awards under the Plan have
         been satisfied by the issuance of Stock or the payment of cash, but no
         Award shall be granted more than ten years after the date the Plan is
         approved by the shareholders of the Company, which shall be the Plan's
         effective date.


19.      CHANGE IN CONTROL

         For purposes of the Plan, a "Change of Control" shall have occurred
         if:

         (a)   Any corporation, person or other entity (other than the Company)
               makes a tender or exchange offer for shares of Stock and shares
               are purchased pursuant thereto ("Offer");

         (b)   More than fifty percent of the Company Stock is acquired by any
               person or group;

         (c)   During the period of two consecutive years, individuals who at
               the beginning of such period were members of the Board cease for
               any reason to constitute at least a majority thereof (unless the
               election, or the nomination for election by the Company's
               shareholders, of each new Director was approved by a vote of at
               least two-thirds of the Directors then still in office who were
               Directors at the beginning of the period); or

         (d)   The shareholders of the Company approve a definitive agreement
               to merge the Company with another corporation where the Company
               is not the surviving corporation or survives only as a
               subsidiary of another corporation, to consolidate the Company
               with another corporation, or sell or otherwise dispose of
               substantially all of the Company's assets.

         In the event of the occurrence of a Change of Control, then from and
         after the date of the first purchase of Stock pursuant to the offer,
         or the date on which public announcement of the acquisition of such
         percentage of stock shall have been made, or the date on which such
         change in the composition of the Board shall have occurred, or the
         date of any such shareholder approval, all Stock Options and Stock
         Appreciation Rights and other Awards granted pursuant to the Plan
         which remain outstanding shall automatically become exercisable in
         full, whether or not otherwise exercisable, and all other Awards under
         the Plan shall be vested as determined by the Committee.
         Notwithstanding the foregoing, no "Change of Control" shall be deemed
         to have occurred by virtue of any of the events set forth above if,
         prior to the occurrence of such event, a majority of the Continuing
         Directors then in office determine that such event should not be
         treated as a "Change of Control" for purposes of this Plan.
         "Continuing Director" shall mean any member of the Board of Directors
         of the Company who is a member of the Board of Directors as of the
         date of this Agreement and any person who subsequently becomes a
         member of the 


                                      12
<PAGE>   13

         Board of Directors, if such person's nomination for election or
         election to the Board of Directors is recommended or approved by a
         majority of the Continuing Directors.

         20.      INTENT:  SEPARABILITY

         All Incentive Stock Options granted hereunder are intended to comply
         with Section 422 of the Code and, to the extent applicable, Section
         424 of the Code, and all provisions of this Plan and all Incentive
         Stock Options granted hereunder shall be construed in such manner as
         to effectuate that intent. This Plan and all Stock Options, stock
         appreciation rights, and other awards and rights granted hereunder are
         intended to satisfy the conditions of Rule 16b-3, as amended, and all
         provisions of this Plan and all Stock Options, Stock Appreciation
         Rights, and other awards and rights granted hereunder shall be
         construed in such manner as to effectuate that intent. If any of the
         terms or provisions of this Plan conflict with the requirements of
         Rule 16b-3 (as it may be amended from time to time) or Sections 422
         and 424 of the Code (as they may be amended from time to time), then
         such terms or provisions shall be deemed inoperative to the extent
         that they so conflict with such requirements.

21.      GOVERNING LAW

         To the extent that Federal laws do not otherwise control, this Plan
         shall be construed in accordance with and governed by the law of the
         state of Mississippi.


                                      13

<PAGE>   1
                                                                     EXHIBIT 4.5

                                 CHEMFIRST INC.

                         1988 LONG-TERM INCENTIVE PLAN


1.       PURPOSE.    The purpose of the CHEMFIRST INC. 1988 LONG-TERM INCENTIVE
         PLAN (the "PLAN") is to further the growth in earnings and market
         appreciation of CHEMFIRST INC. (the "COMPANY").  The PLAN provides
         long-term incentives to "Outside Directors" of the COMPANY (as defined
         in Paragraph 4 below) and those officers, "Subsidiary Directors" (as
         defined in Paragraph 4 below) and key employees of the COMPANY or its
         subsidiaries, partnerships or joint ventures who make substantial
         contributions to the COMPANY by their ability, loyalty, industry, and
         invention.  The COMPANY intends that the PLAN will thereby facilitate
         securing, retaining and motivating officers, directors and key
         employees of high caliber and good potential.

2.       ADMINISTRATION.    The PLAN shall be administered by the Board of
         Directors (the "Board") of the COMPANY or by a Committee of the Board.
         Unless the Board consists solely of "disinterested persons" within the
         meaning of Rule 16b-3 of the Securities and Exchange Commission, a
         Committee (the "Committee") of two or more directors, each of whom is
         a "disinterested person" within the meaning of such rule, shall make
         any decisions regarding the selection of officers and directors for
         participation under the PLAN and any decisions concerning the timing,
         pricing, and amount of a grant or award under the PLAN, except for any
         grants or awards determined pursuant to a formula satisfying the
         provisions of Rule 16b-3(c)(2)(ii) of the Securities and Exchange
         Commission.  The Board or the Committee, as the case may be, shall
         have full and final authority in its discretion to conclusively
         interpret the provisions of the PLAN and to decide all questions of
         fact arising in its application; to determine the employees, officers
         and Subsidiary Directors to whom awards shall be made under the PLAN;
         to determine the type of award to be made and the amount, size and
         terms of each such award; to determine the time when awards will be
         granted to employees, officers and Subsidiary Directors; and to make
         all other determinations necessary or advisable for the administration
         of this PLAN.  All provisions elsewhere in this PLAN dealing with
         administration of and decisions under this PLAN which refer to the
         Board shall be deemed to refer to the Committee whenever the Committee
         is administering this PLAN pursuant to this Section 2.
         Notwithstanding the above, however, neither the Board nor the
         Committee shall have any discretion with respect to the determination
         of which Outside Directors are to receive awards, the number of shares
         of common stock or amount of debentures subject to any such awards to
         Outside Directors, the conversion or purchase price thereof, the type
         of awards so granted or the time of grant.

3.       SHARES SUBJECT TO PLAN.    Subject to the provisions of Paragraph
         10(e) and Paragraph 18 hereof, the shares that may be issued under the
         PLAN shall not exceed in
<PAGE>   2
         the aggregate 1,000,000 shares of the common stock of the COMPANY.
         Except as otherwise provided herein, any share subject to an option or
         right which expires or is terminated unexercised, shall again be
         available under the PLAN.

4.       PARTICIPANTS.    Persons eligible to participate shall be limited to
         (a) those officers, key employees and Subsidiary Directors of the
         COMPANY or any of its subsidiaries, or a partnership or joint venture
         in which the COMPANY has at least a fifty (50%) percent ownership
         interest, who are in positions in which their decisions, actions and
         counsel significantly impact upon the performance of the COMPANY or
         its subsidiaries and (b) Outside Directors.  However, awards of
         Incentive Stock Options as provided in Paragraph 6 shall be limited to
         employees of the COMPANY or any of its subsidiaries.  The term
         "Outside Director" as used herein shall mean any director of the
         COMPANY who is not also an employee or officer of the COMPANY or any
         of its subsidiaries or a partnership or joint venture in which the
         COMPANY has at least a fifty percent (50%) ownership interest.  The
         term "Subsidiary Director" as used herein shall mean any director of
         any subsidiary of the COMPANY (other than any subsidiary whose equity
         securities have been registered for a public offering under the
         Securities Act of 1933 or have been registered under the Securities
         Exchange Act of 1934) who is not also an Outside Director.  The terms
         "employee" and "officer" as used herein (except as used in defining an
         Outside Director) shall not include any employee or officer of any
         subsidiary of the COMPANY whose equity securities have been so
         registered unless such individual is also an officer or employee of
         the COMPANY or of another subsidiary, whose equity securities have not
         been so registered.

5.       AWARDS.

         (a)     AWARDS TO OFFICERS, EMPLOYEES AND SUBSIDIARY DIRECTORS UNDER
                 THE PLAN.    Awards to officers, employees and Subsidiary
                 Directors under the PLAN may be in the form of stock options,
                 options to purchase debentures convertible into common or
                 convertible preferred stock of the COMPANY, stock appreciation
                 rights, performance units, restricted stock, supplemental cash
                 and such other forms as the Board may in its discretion deem
                 appropriate, including any combination of the above.  The
                 Board or the Committee, as the case may be, shall make the
                 grant of the awards.  No one employee or Subsidiary Director
                 shall receive awards in the form of stock in excess of
                 one-fifth (1/5) of the total shares subject to this PLAN.  No
                 fractional shares shall be issued under this PLAN, and the
                 minimum value of any shares issued under this PLAN shall be
                 the par value at the time of award.

         (b)     AWARDS TO OUTSIDE DIRECTORS SERVING ON NOVEMBER 11, 1988.
                 Awards under the PLAN to persons who are serving as Outside
                 Directors on November 11, 1988 shall be in the form of
                 debenture options (as described in





                                       2
<PAGE>   3
                 Paragraph 10), or if the condition described below is not
                 satisfied, then such awards shall be in the form of
                 Non-Statutory Stock Options (as defined in Paragraph 6 below).
                 An annual award shall be made to each such Outside Director on
                 the first day following the annual meeting of the COMPANY's
                 stockholders in 1988 and on the first day following the Annual
                 Meeting of the Company's Stockholder in each year thereafter
                 to and including 1992 on which such Outside Director is then
                 serving; provided, however, that if a response from the
                 Securities and Exchange Commission ("SEC") to the request
                 described below has not been received by November 11, 1988,
                 then the 1988 grants shall be deferred until the day following
                 receipt of (i) a favorable no-action letter from the SEC or
                 (ii) indication from the SEC that a favorable letter will not
                 be issued.  If no definitive response (favorable or
                 unfavorable) has been received from the SEC by December 31,
                 1988, then the 1988 grants to such Outside Directors shall
                 occur on December 31, 1988.  If a favorable no-action letter
                 or a favorable opinion of counsel is received, then each such
                 Outside Director serving on the Board on an annual grant date
                 described above shall receive such annual grant date a
                 debenture option which is exercisable to purchase debentures
                 in a principal amount calculated by multiplying the fair
                 market value of a share of the COMPANY's common stock on the
                 date of grant of the debenture option by 1,000 shares in the
                 case of debenture options granted in each of the five years
                 beginning in 1988 and ending in 1992.  Notwithstanding the
                 foregoing the fair market value of a share of the COMPANY's
                 common stock on November 11, 1988 shall be used pursuant to
                 the foregoing formula to determine the amount of debentures
                 covered by any 1988 debenture options granted to Outside
                 Directors.   Each debenture and debenture option referred to
                 above shall have terms consistent with Paragraph 10 hereof and
                 the Board shall have no authority to provide otherwise.

                          In the event that the COMPANY fails to receive by
                 December 31, 1988 either (i) a favorable no-action letter from
                 the SEC staff expressing concurrence with the view of the
                 COMPANY that the grant of debenture options to Outside
                 Directors under the PLAN will not affect the Outside
                 Directors' status as "disinterested persons" as defined in
                 Rule 16b-3(d)(3) promulgated under the Securities Exchange Act
                 of 1934, as amended, with respect to the COMPANY's employee
                 benefit plans or (ii) an opinion of counsel addressed to the
                 COMPANY stating that the grant of debenture options to Outside
                 Directors under the PLAN will not affect such status, then
                 each such Outside Director then serving on the Board shall
                 receive on December 31, 1988, and on each subsequent annual
                 grant date specified above, a Non-Statutory Stock Option in
                 lieu of any debenture option which would otherwise be granted
                 to directors as provided above.  In such event, each such
                 Outside Director shall receive an option to purchase 1,000
                 shares of common stock in each of the years 1988 through 1992.
                 Such Non-Statutory Stock Options shall have terms, including
                 option price, consistent with Paragraph 6 hereof, and the
                 Board shall have no authority to provide





                                       3
<PAGE>   4
                 otherwise.  The amounts of shares specified above to be used
                 in determining the amount of debentures covered by debenture
                 options or shares of common stock covered by Non-Statutory
                 Stock Options to be granted to such Outside Directors shall be
                 subject to adjustment as provided in Paragraph 18 below.

                          However, if after the 1988 grants to such Outside
                 Directors have been made, the Company receives a favorable
                 no-action letter from the SEC staff expressing concurrence
                 with the view of the COMPANY that the grant of debenture
                 options to Outside Directors under the PLAN will not affect
                 the Outside Directors' status as "disinterested persons" as
                 described above, then all subsequent awards to such Outside
                 Directors shall be in the form of debenture options as
                 hereinabove described.  No other types of awards shall be
                 granted to such Outside Directors under the PLAN.

         (c)     AWARDS TO OUTSIDE DIRECTORS ELECTED SUBSEQUENT TO NOVEMBER 11,
                 1988.    Awards to Outside Directors, who are elected to serve
                 during the term of the PLAN and subsequent to November 11,
                 1988, shall be in the form of debenture options (as described
                 in Paragraph 10), or if the condition described below is not
                 satisfied, then such awards shall be in the form of
                 Non-Statutory Stock Options (as defined in Paragraph 6 below).
                 An annual award shall be made to each such Outside Director
                 serving on the first day following the first annual meeting of
                 the COMPANY's stockholders at which he is elected to the Board
                 and on the day following the Annual Meeting of the Company's
                 Stockholders in each year of the four (4) immediately
                 following years thereafter or such lesser number of years as
                 may occur during the then remaining term of the PLAN.  If a
                 favorable no-action letter as described above or a favorable
                 opinion of counsel as described above is received, then each
                 such Outside Director serving on the Board on the annual grant
                 date described above shall receive a debenture option which is
                 exercisable to purchase debentures in a principal amount
                 calculated by multiplying the fair market value of a share of
                 the COMPANY's common stock on the date of grant of the
                 debenture option by 1,000 shares.   Each debenture and
                 debenture option referred to above shall have terms consistent
                 with Paragraph 10 hereof and the Board shall have no authority
                 to provide otherwise.

                          In the event that the COMPANY has not received prior
                 to any applicable annual grant date either (i) a favorable
                 no-action letter from the SEC staff expressing concurrence
                 with the view of the COMPANY that the grant of debenture
                 options to such Outside Directors under the PLAN will not
                 affect the Outside Directors' status as "disinterested
                 persons" as described above or (ii) an opinion of counsel
                 stating that the grant of debenture options to Outside
                 Directors under the PLAN will not affect such status, then
                 each Outside Director then serving on the Board on each annual
                 grant date specified above, shall receive a Non-Statutory
                 Stock Option in lieu of any debenture option which would





                                       4
<PAGE>   5
                 otherwise be granted to such Outside Director as provided
                 above.  In such event, such Outside Director shall receive on
                 each applicable annual grant date an option to purchase 1,000
                 shares of common stock.  Such Non-Statutory Stock Options
                 shall have terms, including option price, consistent with
                 Paragraph 6 hereof, and the Board shall have no authority to
                 provide otherwise.  The amounts of shares specified above to
                 be used in determining the amount of debentures covered by
                 debenture options or shares of common stock covered by
                 Non-Statutory Stock Options to be granted to such Outside
                 Directors shall be subject to adjustment as provided in
                 Paragraph 18 below.

                          However, if at any time, the COMPANY receives a
                 favorable no-action letter from the SEC staff expressing
                 concurrence with the view of the COMPANY that the grant of
                 debenture options to Outside Directors under the PLAN will not
                 affect the Outside Directors' status as "disinterested person"
                 as described above, then all subsequent awards to such Outside
                 Directors shall be in the form of debenture options as
                 hereinabove described.  No other types of awards shall be
                 granted to such Outside Directors under the PLAN.

6.       STOCK OPTIONS.    Stock options may be "Incentive Stock Options," as
         defined in Section 422A of the Internal Revenue Code of 1986, as
         amended (the "Code") or stock options not qualifying as Incentive
         Stock Options ("Non-Statutory Stock Options").  Any Incentive Stock
         Option granted to any person who, at the time such option is granted,
         owns (as defined in Sections 422A and 425 of the Code) stock
         possessing more than 10% of the total combined voting power of all
         classes of stock of the COMPANY or one of its parent (if any) or
         subsidiary corporations shall comply with the applicable provisions of
         Section 422A of the Code.  Non-Statutory Stock Options may be awarded
         to Outside Directors (subject to Paragraph 5 above).  Stock Options
         may be awarded to officers, employees and Subsidiary Directors under
         the PLAN and shall be evidenced by stock option agreements in such
         form and not inconsistent with this PLAN as the Board shall approve
         from time to time, which agreements shall contain in substance the
         following terms and conditions:

         (a)     OPTION PRICE.    The purchase price per share of stock
                 deliverable upon the exercise of an option shall be the fair
                 market value of the COMPANY's common stock on the day the
                 option is granted (except as provided below with respect to
                 Outside Directors), but not less than the par value of the
                 COMPANY's common stock.  In the case of Stock Options granted
                 to Outside Directors the option price shall be the fair market
                 value of the COMPANY's common stock on the day the option is
                 granted; provided, however, that the exercise price of any
                 1988 Stock Option granted to an Outside Director shall be the
                 fair market value of the COMPANY's common stock on November
                 11, 1988, even though such option may be granted on a later
                 date and even though the fair market value of the COMPANY's
                 common stock may be higher or lower on such date.  The fair
                 market value per share of the COMPANY's common stock shall be
                 the average





                                       5
<PAGE>   6
                 of the highest and lowest prices of the COMPANY's common stock
                 traded on the principal market of the common stock on the day
                 the option is granted.  If no sale of the COMPANY's common
                 stock shall have been made on the principal market for the
                 stock on the day the option is granted, the fair market value
                 shall be based upon the next preceding day on which there was
                 a sale of the COMPANY's common stock.

         (b)     TERMS OF OPTION.    Each stock option agreement shall state
                 the period or periods of time in which the option may be
                 exercised by the participant, in whole or in part, which shall
                 be such period or periods of time as may be determined by the
                 Board, provided that the option period shall not commence
                 earlier than six (6) months after the date of the grant of the
                 option nor end later than ten (10) years after the date of the
                 grant of the option.  In the case of Outside Directors such
                 exercise period shall begin six (6) months after the date of
                 grant of the option and end ten (10) years after such grant.
                 An option shall be outstanding until it is exercised in full
                 or expires by reason of lapse of time.

         (c)     PAYMENT FOR SHARES.    Stock purchased pursuant to an option
                 agreement shall be paid for in full at the time of purchase,
                 either in the form of cash, common stock of the COMPANY at
                 fair market value, or in a combination thereof, as the Board
                 may determine.

         (d)     RIGHTS UPON TERMINATION OF EMPLOYMENT.    In the event that an
                 officer or employee (1) dies or retires or becomes disabled or
                 (2) terminates all positions held as an officer or employee of
                 the COMPANY and any of its subsidiaries, and any partnership
                 or joint venture in which the COMPANY has at least a fifty
                 (50%) percent ownership interest, within six (6) months
                 following a Change of Control (as defined in Paragraph 21) of
                 the COMPANY prior to expiration of his option without having
                 fully exercised his option, said officer or employee or his
                 legal successor shall have the right to exercise the option
                 during its term within a period of twelve (12) months after
                 the date of such termination of employment, or such longer
                 period as determined by majority decision of the Board.  In
                 the event of such termination of employment by the COMPANY and
                 any such affiliated employers for cause (other than during
                 such  six (6) month period following a Change of Control), the
                 officer or employee shall have the right to exercise the
                 option during its term within a period of thirty (30) days
                 after such termination.  In the event of such termination of
                 employment for any other reason (other than during such six
                 (6) month period following a Change of Control), the optionee
                 or his legal successor shall have the right to exercise the
                 option during its term within a period of six (6) months after
                 such termination.

         (e)     RIGHTS UPON TERMINATION OF SERVICE ON THE BOARD.   In the
                 event that any Outside Director or Subsidiary Director who has
                 received stock options hereunder shall cease to serve on the
                 Board of Directors of the





                                       6
<PAGE>   7
                 COMPANY in the case of an Outside Director or the applicable
                 subsidiary in the case of a Subsidiary Director due to death
                 or retirement or within six (6) months following a Change of
                 Control (as defined in Paragraph 21) of the COMPANY prior to
                 expiration of the Stock Option without having fully exercised
                 his stock option, then such option may be exercised within
                 twelve (12) months after such death, retirement or termination
                 due to change in control, but not later than the termination
                 date of the option.  In the event that any Outside Director or
                 Subsidiary Director is removed from the Board of Directors of
                 the COMPANY in the case of an Outside Director or the
                 applicable subsidiary in the case of a Subsidiary Director for
                 cause (other than during such a six (6) month period following
                 a Change of Control) without having fully exercised his option
                 then said director will have the right to exercise the option
                 during its term within a period of thirty (30) days after such
                 termination.  In the event that any Outside Director or
                 Subsidiary Director ceases to serve on the Board of Directors
                 of the COMPANY in the case of an Outside Director or
                 subsidiary in the case of a Subsidiary Director for any other
                 reason (other than during such a six month period following a
                 Change of Control) then such option may be exercised during
                 its term within six (6) months after such cessation of
                 service.

         (f)     INCENTIVE STOCK OPTION LIMITATION.    In the case of Incentive
                 Stock Options, the aggregate fair market value (determined as
                 of the time an Incentive Stock Option is granted) of the stock
                 with respect to which Incentive Stock Options become
                 exercisable for the first time by an individual during any
                 calendar year under all plans of the COMPANY and its parent or
                 subsidiary corporations shall not exceed ONE HUNDRED THOUSAND
                 DOLLARS ($100,000).

         (g)     DESIGNATION OF OPTIONS.    At the time any option is granted
                 to an officer, employee or Subsidiary Director under the PLAN,
                 the Board shall determine whether or not the option is to be
                 an Incentive Stock Option, and the option shall be clearly
                 identified as to its status as an Incentive Stock Option or a
                 Non-Statutory Stock Option (which is any option that is not an
                 Incentive Stock Option).

7.       STOCK APPRECIATION RIGHTS.    Stock appreciation rights may be granted
         to officers, employees and Subsidiary Directors and shall be evidenced
         by stock appreciation right agreements in such form and not
         inconsistent with this PLAN as the Board shall approve from time to
         time, which agreements shall contain in substance the following terms
         and conditions:

         (a)     AWARD.    A stock appreciation right shall entitle the grantee
                 to receive upon exercise the excess of (a) the fair market
                 value of a specified number of shares of the COMPANY's common
                 stock at the time of exercise over (b) a specified price which
                 shall be the fair market value of the stock at the time the
                 appreciation





                                       7
<PAGE>   8
                 right was granted, or, if connected with a previously issued
                 stock option, the fair market value of the stock at the time
                 such option was granted.  A stock appreciation right may be
                 granted in connection with all or any portion of a previously
                 or contemporaneously granted stock option (including, in
                 addition to options granted under the PLAN, options granted
                 under other plans of the COMPANY), or not in connection with a
                 stock option.

         (b)     TERM.    Stock appreciation rights shall be granted for a
                 period of not less than one (1) year nor more than ten (10)
                 years, and shall be exercisable in whole or in part, at such
                 time or times and subject to such other terms and conditions
                 as shall be prescribed by the Board at the time of grant,
                 subject to all of the following:

                 (i)      No stock appreciation right shall be exercisable, in
                          whole or in part, during the six (6) month period
                          starting with the date of grant; and

                 (ii)     Stock appreciation rights will be exercisable only
                          during officer's, employee's or Subsidiary Director's
                          service with the COMPANY or its subsidiaries,
                          partnerships or joint ventures in which the COMPANY
                          has at least a fifty (50%) percent ownership
                          interest, except that: (1) in the discretion of the
                          Board a stock appreciation right may be made
                          exercisable for up to thirty (30) days after the
                          grantee's employment or service is terminated for any
                          reason other than death, disability or retirement;
                          and (2) in the event that a grantee dies or retires
                          or becomes disabled prior to exercise of stock
                          appreciation rights, the grantee or his legal
                          successor shall have the right to exercise the rights
                          during their term within a period of twelve (12)
                          months after the date of termination due to death,
                          disability or retirement, or such longer period as
                          determined by majority decision of the Board.

         (c)     PAYMENT.    Upon exercise of a stock appreciation right,
                 payment shall be made in the form of common stock of the
                 COMPANY (at fair market value on the date of exercise), in
                 cash, or in a combination thereof, as the Board may determine.

8.       PERFORMANCE UNITS.  Performance Units ("Units") may be granted to
         officers, employees and Subsidiary Directors and shall be evidenced by
         performance unit agreements in such form and not inconsistent with
         this PLAN as the Board shall approve from time to time, which
         agreements shall contain in substance the following terms and
         conditions:





                                       8
<PAGE>   9
         (a)     PERFORMANCE PERIOD.  The performance period for a Unit shall
                 be established by the Board and shall be not more than five
                 (5) years, nor less than two (2) years.

         (b)     VALUATION OF UNITS.    A value for each Unit shall be
                 established by the Board, together with principal and minimum
                 performance targets to be achieved in respect of the Unit
                 during the performance period.  The participant shall be
                 entitled to receive one hundred (100%) percent of the value of
                 the Unit, if the principal target is achieved during the
                 performance period, but shall be entitled to receive nothing
                 for such Unit if the minimum target is not achieved during the
                 performance period.  The participant shall be entitled to
                 receive a stated portion of the value of the Unit for
                 performance during the performance period which meets or
                 exceeds the minimum target but fails to meet the principal
                 target.

         (c)     PERFORMANCE TARGETS.    The performance targets established
                 under the PLAN shall relate to the COMPANY's performance (or
                 the performance of its subsidiaries, partnerships or joint
                 ventures in which the COMPANY has at least a fifty (50%)
                 percent ownership interest, herein collectively referred to in
                 this Paragraph (c) as "COMPANY's performance") over the
                 performance period, and may be established in terms of growth
                 in earnings or equity, ratio of earnings to shareholders'
                 equity or to total capital, or other performance standards as
                 determined by the Board in its discretion.  Multiple targets
                 may be used and may have the same or different weighting, and
                 they may relate to absolute COMPANY's performance, or the
                 COMPANY's performance as measured against the performance of
                 other companies, or the COMPANY's performance as measured
                 against other standards as determined by the Board in its
                 discretion.

         (d)     ADJUSTMENTS.    At any time prior to payment of the Units, the
                 Board may adjust previously established performance targets
                 and other terms and conditions, including the COMPANY's (or
                 its subsidiaries, partnerships or joint ventures in which the
                 COMPANY has at least a fifty (50%) percent ownership interest)
                 or other companies' financial performance for PLAN purposes,
                 to reflect major unforeseen events such as changes in laws,
                 regulations or accounting policies or procedures, mergers,
                 acquisitions or divestitures or extraordinary, unusual or
                 non-recurring items or events.

         (e)     PAYMENTS OF UNITS.    Following the conclusion of each
                 performance period, the Board shall determine the extent to
                 which performance targets have been attained for such period
                 as well as the other terms and conditions established by the
                 Board.  The Board shall determine what, if any, payment is due
                 on the Units and whether such payment shall be made in cash,
                 in common stock of the COMPANY, or partially in cash and
                 partially in common stock of the COMPANY.  Any payments made
                 in stock shall be calculated on the fair market value of the
                 stock.  Payment shall be made as promptly as practicable
                 following





                                       9
<PAGE>   10
                 the end of the performance period unless deferred subject to
                 such terms and conditions as may be prescribed by the Board.
                 The Board may authorize payments in common stock under any
                 previously existing Performance Unit Plans of the COMPANY.
                 Any payments made in common stock of a previously existing
                 Performance Unit Plan shall be calculated on the fair market
                 value of the stock.

         (f)     TERMINATION OF SERVICE.    In the event that a participant
                 holding a Unit award ceases to be an employee or Subsidiary
                 Director of either the COMPANY or its subsidiaries,
                 partnerships or joint ventures in which the COMPANY has at
                 least a fifty (50%) percent ownership interest prior to the
                 end of the applicable performance period by reason of death,
                 disability or retirement, then with the consent of the Board
                 his Units, to the extent earned under the applicable
                 performance targets, shall be payable at the end of the
                 performance period in proportion to the active service of the
                 participant during the performance period, as determined by
                 the Board.  Upon any other termination of employment or
                 service, participation shall terminate forthwith and all
                 outstanding Units held by the participant shall be cancelled.

         (g)     OTHER TERMS.    The Unit agreements shall contain such other
                 terms and provisions and conditions not inconsistent with this
                 PLAN as shall be determined by the Board.

9.       RESTRICTED STOCK AWARDS.    Restricted stock awards may be granted to
         officers, employees and Subsidiary Directors and shall be evidenced by
         restricted stock agreements in such form and not inconsistent with
         this PLAN as the Board shall approve from time to time, which
         agreements shall contain in substance the following terms and
         conditions:

         (a)     RESTRICTION PERIOD.    Shares awarded pursuant to restricted
                 stock awards shall be subject to such conditions, terms and
                 restrictions (including performance achievement earnout,
                 forfeiture and transfer) and shall be for such period or
                 periods as shall be determined by the Board.  The Board shall
                 have the power to permit, in its discretion, an acceleration
                 of the expiration of the applicable restriction period with
                 respect to any part or all of the shares awarded to a
                 participant.

         (b)     RESTRICTIONS UPON TRANSFER.    Shares awarded, and the right
                 to vote such shares and to receive dividends thereon, may not
                 be sold, assigned, transferred, exchanged, pledged,
                 hypothecated, or otherwise encumbered, except as herein
                 provided, during the restriction period applicable to such
                 shares.  Notwithstanding the foregoing, and except as
                 otherwise provided in the PLAN,





                                       10
<PAGE>   11
                 the participant shall have all the other rights of a
                 stockholder including, but not limited to, the right to
                 receive dividends and the right to vote such shares.

         (c)     CERTIFICATES.    Each certificate issued in respect of shares
                 awarded to a participant shall be deposited with the COMPANY,
                 or its designee, and shall bear the following legend:

                 "This certificate and the shares of stock represented hereby
                 are subject to the terms and conditions (including forfeiture
                 and restrictions against transfer) contained in the CHEMFIRST
                 INC. 1988 Long-Term Incentive Plan and an Agreement entered
                 into between the registered owner and CHEMFIRST INC.  Release
                 from such terms and conditions shall be obtained only in
                 accordance with the provisions of the PLAN and Agreement, a
                 copy of each of which is on file in the office of the
                 Secretary of CHEMFIRST INC., Jackson, Mississippi.

         (d)     LAPSE OF RESTRICTIONS.    The Agreement shall specify the
                 conditions and terms upon which any restrictions upon shares
                 under the PLAN shall lapse, as determined by the Board.  Upon
                 the lapse of such restrictions, shares of common stock, free
                 of any restrictive legend shall be issued to the participant
                 or his legal representative.

10.      DEBENTURE OPTIONS.    Debenture options may be granted to officers,
         employees, Outside Directors and Subsidiary Directors and shall be
         evidenced by debenture option agreements in such form and not
         inconsistent with the PLAN as the Board shall approve from time to
         time, which agreements shall be subject to the following terms and
         conditions:

         (a)     OPTION PROVISIONS.    Debenture options will be granted to
                 purchase debentures of a particular series.  Debenture options
                 will be exercisable at any time within ten (10) years after
                 grant.  The purchase price upon exercise of a debenture option
                 will be par (that is, the principal amount of the debenture)
                 and shall be paid in full in cash at the time of purchase.

         (b)     RIGHTS UPON TERMINATION OF EMPLOYMENT.    In the event that an
                 employee or officer who holds a debenture option dies or
                 retires or becomes disabled or terminates all positions as an
                 officer or employee of the COMPANY and any of its
                 subsidiaries, and any partnership or joint venture in which
                 the COMPANY has at least a fifty (50%) percent ownership
                 interest, within six (6) months following a Change of Control
                 (as defined in Paragraph 21) of the COMPANY prior to
                 expiration of the debenture option without having fully
                 exercised his option, the holder of the debenture option or
                 his legal successor shall have the right to exercise the
                 debenture option during its term within a period of twelve
                 (12) months after the date of such death, disability,
                 retirement





                                       11
<PAGE>   12
                 or termination of employment or such longer period as
                 determined by majority decision of the Board.  In the event of
                 such termination of employment by the COMPANY for cause other
                 than during such six month period following a Change of
                 Control, the optionee shall have the right to exercise a
                 debenture option during its term within a period of thirty
                 (30) days after such termination.  In the event of such
                 termination of employment for any other reason other than
                 during such six month period following a Change of Control,
                 the optionee or his legal successor shall have the right to
                 exercise a debenture option during its term within a period of
                 six (6) months after such termination.

         (c)     RIGHTS UPON TERMINATION OF SERVICE ON THE BOARD.    In the
                 event that any Outside Director or Subsidiary Director who has
                 received a debenture option hereunder shall cease to serve on
                 the Board of Directors of the COMPANY in the case of an
                 Outside Director or the applicable subsidiary in the case of a
                 Subsidiary Director due to death or retirement or within six
                 (6) months following a Change of Control (as defined in
                 Paragraph 21) of the COMPANY prior to expiration of the
                 debenture option without having fully exercised said option,
                 then such person or his legal successor shall have the right
                 to exercise such debenture option during its term within
                 twelve (12) months after such death, retirement or termination
                 due to change in control.  In the event that any Outside
                 Director or Subsidiary Director is removed from the Board of
                 Directors of the COMPANY in the case of an Outside Director or
                 the applicable subsidiary in the case of a Subsidiary Director
                 for cause (other than during such six month period following a
                 Change of Control) without having fully exercised his option
                 then such person will have the right to exercise the option
                 during its term within a period of thirty (30) days after such
                 termination.   In the event that any Outside Director or
                 Subsidiary Director ceases to serve on the Board of Directors
                 of the COMPANY in the case of an Outside Director or the
                 applicable subsidiary in the case of a Subsidiary Director for
                 any other reason (other than during such six month period
                 following a Change of Control) then such person or his legal
                 successor shall have the right to exercise such debenture
                 option during its term within six (6) months after such
                 cessation of service.

         (d)     DEBENTURE TERMS.    Debentures acquired upon exercise of a
                 debenture option will mature ten (10) years after grant of the
                 debenture option.  The debentures will bear interest at the
                 lesser of a floating rate of one (1%) percent less than the
                 rate publicly announced as its prime rate by Deposit Guaranty
                 National Bank or such other bank as is designated by the Board
                 of Directors of the COMPANY or the maximum legal rate under
                 applicable law.  Interest on the debentures will be payable
                 semi-annually on January 1 and July 1 of each year.
                 Debentures may not be transferred or pledged without written
                 consent of the COMPANY.  The debentures will be subordinated
                 generally to the COMPANY's other indebtedness.





                                       12
<PAGE>   13
         (e)     CONVERSION RIGHTS.    Each debenture will contain conversion
                 rights exercisable at any time more than six (6) months after
                 the award of a debenture option and prior to maturity or
                 redemption of the debenture (except while the debentures are
                 pledged).  Debentures of each series will be convertible into
                 a special series of preferred stock of the COMPANY based on a
                 price per share of the preferred stock equal to the fair
                 market value of the COMPANY's common stock (determined as
                 provided in Paragraph 6 above) on the date of grant of the
                 option to purchase the debenture; provided, however, that the
                 Conversion Price for any debentures issued pursuant to 1988
                 debenture options granted to Outside Directors shall be based
                 on the fair market value of the COMPANY's stock on November
                 11, 1988 even though such option may be granted on a later
                 date and even though the fair market value of the COMPANY's
                 stock may be higher or lower on such date.  Each share of
                 preferred stock issued upon conversion of a debenture will in
                 turn be immediately convertible into one (1) share of common
                 stock of the COMPANY, subject to adjustment pursuant to the
                 following sentence.  In the event of a reclassification,
                 recapitalization, merger, consolidation, reorganization,
                 issuance of warrants, rights or debentures, stock dividend,
                 stock split or reverse stock split, cash dividend, property
                 dividend, including, without limitation, a distribution of the
                 stock of a subsidiary, combination or exchange of shares,
                 repurchase of shares, or any other change in corporate
                 structure which in the judgment of the Board materially
                 affects the value of the COMPANY's shares subsequent to grant
                 of a debenture option, the Board shall determine the
                 appropriate adjustments, if any, to the number of shares of
                 common stock of the COMPANY issuable upon conversion of
                 preferred stock under the preceding sentence.

         (f)     REDEMPTION AND CALL OF DEBENTURES.    A debenture shall be
                 redeemable by the holder at par on any interest payment date
                 which is more than one (1) year after issuance of the
                 debenture.  Debentures other than those held by Outside
                 Directors may be called by the COMPANY for repayment as of any
                 interest payment date following twelve (12) months prior
                 notice.  Upon any redemption pursuant to call by the COMPANY,
                 the debenture holder will be paid par plus interest to the
                 date of redemption.  Debentures held by Outside Directors may
                 not be called prior to the expiration of their terms unless
                 all debentures issued pursuant to the PLAN are called.

         (g)     PLEDGE OF DEBENTURES.    If any debenture is pledged by the
                 holder for a loan with the consent of the COMPANY, the
                 debenture will not be convertible while the debenture remains
                 pledged.  Upon any default on the loan for which a debenture
                 is pledged with the consent of the COMPANY, the lender may
                 redeem the debenture at par on any interest payment date.
                 Upon notice to the COMPANY from the purchaser and the lender
                 to which a debenture has been pledged that the debt has been
                 discharged, the conversion right will automatically be
                 restored.  If a holder sells, assigns, transfers or pledges a
                 debenture without





                                       13
<PAGE>   14
                 the COMPANY's consent, the conversion right with respect to
                 the debenture will permanently cease to exist.

11.      SUPPLEMENTAL CASH PAYMENTS.    Subject to the Board's discretion, any
         options, stock appreciation rights, performance units or restricted
         stock agreements involving an officer, employee or Subsidiary Director
         may provide for the payment by the COMPANY of a supplemental cash
         payment to a participant promptly after the exercise of a stock
         option, debenture option or stock appreciation right, or at the time
         of payment of a performance unit or at the end of a restriction period
         of a restricted stock award.  Such supplemental cash payments shall be
         subject to such terms and conditions as shall be provided by the Board
         at the time of grant, provided that in no event shall the amount of
         each payment exceed:

         (a)     In the case of a stock option, the excess of the fair market
                 value of a common share on the date of exercise over the
                 option price multiplied by the number of shares for which such
                 stock option is exercised, or

         (b)     In the case of a stock appreciation right, performance unit or
                 restricted stock award, the value of the shares and other
                 consideration issued in payment of such award.

         (c)     In the case of a debenture option, the excess of the fair
                 market value of the debentures purchased upon exercise of the
                 debenture option over the par value of the purchased
                 debentures.

12.      GENERAL RESTRICTIONS.    Each award under the PLAN shall be subject to
         the requirement that, if at any time the Board shall determine that
         (i) the listing, registration or qualification of the shares of common
         stock subject or related thereto upon any securities exchange or under
         any state or federal law, or (ii) the consent or approval of any
         government regulatory body, or (iii) an agreement by the recipient of
         an award with respect to the disposition of shares of common stock or
         other securities, is necessary or desirable as a condition of, or in
         connection with, the granting of such award or the issue or purchase
         of shares of common stock or other securities thereunder, such award
         may not be consummated in whole or in part unless such listing,
         registration, qualification, consent, approval or agreement shall have
         been effected or obtained free of any conditions not acceptable to the
         Board.

13.      RIGHTS OF A PARTICIPANT.    The recipient of any award under the PLAN,
         unless otherwise provided by the PLAN, shall have no rights as a
         shareholder with respect thereto unless and until certificates for
         shares of common stock or preferred stock, as the case may be, are
         issued to him.





                                       14
<PAGE>   15
14.      RIGHT TO TERMINATE EMPLOYMENT OR SERVICE.    Nothing in the PLAN or in
         any agreement entered into pursuant to the PLAN shall confer upon any
         participant the right to continue in the employment or service as a
         director of the COMPANY, or its subsidiaries, partnerships or joint
         ventures in which the COMPANY has at least a fifty (50%) percent
         ownership interest, or affect any right which the COMPANY, or such
         subsidiaries, partnerships or joint ventures, may have to terminate
         the employment or service as a director of such participant.  For
         purposes of this Plan and notwithstanding anything to the contrary
         contained elsewhere in this Plan, no termination of a Participant's
         employment or Board service with the Company within the meaning of
         this Plan shall be deemed to have occurred by virtue of the Company
         entering into any agreement with respect to, the public announcement
         of, the approval by the Company's shareholders or directors of, or the
         consummation of, any transaction or series of integrated transactions,
         if, prior to the occurrence of such transaction or series of
         integrated transactions, a majority of the Continuing Directors (as
         defined in Section 21 hereof) then in office determine that such
         transaction or series of integrated transactions should not be treated
         as a termination of a Participant's employment or Board service with
         the Company within the meaning of this Plan.

15.      WITHHOLDING.    Whenever the COMPANY proposes or is required to issue
         or transfer shares of stock or debentures under the PLAN, the COMPANY
         shall have the right to require the recipient to remit to the COMPANY
         an amount sufficient to satisfy any federal, state and/or local
         withholding tax requirements prior to the delivery of any certificate
         or certificates for such shares or debentures.  Whenever under the
         PLAN payments are to be made in cash, such payments shall be net of an
         amount sufficient to satisfy any federal, state and/or local
         withholding tax requirements.

                 A recipient may elect with respect to any Non-Statutory Stock
         Option to surrender or authorize the COMPANY to withhold shares of
         common stock (valued at their fair market value on the date of
         surrender or withholding of such shares) in satisfaction of all such
         withholding requirements (a "Withholding Election"); provided,
         however, that:

                 (a)      Any Withholding Election shall be made by written
                          notice to the COMPANY and thereafter shall be
                          irrevocable by the recipient;

                 (b)      Any Withholding Election shall be subject to
                          disapproval by the Board;

                 (c)      Any Withholding Election must be made prior to the
                          date that the recipient recognizes income with
                          respect to the stock options exercised (the "Tax
                          Date"); and





                                       15
<PAGE>   16
                 (d)      If a recipient is subject to Section 16 of the
                          Securities Exchange Act of 1934, as amended, or any
                          successor law and wishes to make a Withholding
                          Election, such person must make any Withholding
                          Election:

                          (i)     more than six months after the date of grant
                                  of the stock option with respect to which
                                  such election is made, except that this
                                  limitation shall not apply in the event of
                                  death or disability of the recipient prior to
                                  the expiration of the six month period; and

                          (ii)    at least six months prior to the Tax Date,
                                  unless the Withholding Election is made (or
                                  takes effect) during and the actual exercise
                                  of the Non-Statutory Stock Option occurs
                                  during a period beginning on the third
                                  business day following the release for
                                  publication of the COMPANY'S summary
                                  statement of sales and earnings for a quarter
                                  or fiscal year and ending on the twelfth
                                  business day following such statement.

         When the Tax Date falls after the exercise of a stock option and the
         recipient makes a Withholding Election, the full number of shares of
         stock subject to the option being exercised will be issued, but the
         recipient will be unconditionally obligated to deliver to the COMPANY
         on the Tax Date a number of shares of stock having a value equal to
         the recipient's federal, state and/or local withholding tax
         requirements.

16.      NON-ASSIGNABILITY.    No option or similar right (including a stock
         appreciation right) under the PLAN shall be assignable or transferable
         by the recipient thereof except by will or by the laws of descent and
         distribution.  During the life of the recipient, such option or
         similar right shall be exercisable only by such person's guardian or
         legal representative.

17.      NON-UNIFORM DETERMINATIONS.    Except with respect to options granted
         to Outside Directors, the Board's determination under the PLAN
         (including without limitation determinations of the officers,
         employees and Subsidiary Directors to receive awards, the form, amount
         and timing of such awards, the terms and provisions of such awards and
         the agreements evidencing same, and the establishment of values and
         performance targets) need not be uniform and may be made by it
         selectively among persons who receive, or are eligible to receive,
         awards under the PLAN, whether or not such persons are similarly
         situated.

18.      ADJUSTMENTS IN STOCK AND RELATED ADJUSTMENTS.    In the event of a
         reclassification, recapitalization, merger, consolidation,
         reorganization, issuance of warrants, rights or debenture, stock
         dividend, stock split or reverse stock split, cash





                                       16
<PAGE>   17
         dividend, property dividend, including, without limitation, a
         distribution of the stock of a subsidiary, combination or exchange of
         shares, repurchase of shares, or any other change in corporate
         structure, which in the judgment of the Board, materially affects the
         value of the COMPANY's shares, the Board shall determine the
         appropriate adjustments, if any, to (a) the number of shares of common
         stock which may be issued under the PLAN and (b) the number of shares
         issuable and the exercise price per share pursuant to an outstanding
         award theretofore granted under this PLAN.

19.      AMENDMENT OR TERMINATION.    The Board may amend, modify, suspend or
         terminate the PLAN at any time, except that any modification or
         amendment which would (a) increase the aggregate number of shares
         which may be issued under the PLAN (other than an increase pursuant to
         Paragraph 10(e) or Paragraph 18 hereof), (b) materially modify the
         requirements as to eligibility for participation in the PLAN, or (c)
         materially increase the benefits accruing to participants in the PLAN
         within the meaning of Rule 16b-3 promulgated by the Securities and
         Exchange Commission under the Securities Exchange Act of 1934, as
         amended ("Rule 16b-3"), shall be effective only if it is approved by
         the shareholders of the COMPANY at the next annual meeting of
         shareholders after the date of adoption by the Board of such
         modification or amendment; provided, however, that to the extent that
         Rule 16b-3 is amended hereafter to eliminate the requirement of
         shareholder approval with respect to any amendment described in
         clauses (a), (b) or (c) of this sentence, shareholder approval shall
         not be required under this Paragraph 19.  The termination or any
         modification, suspension or amendment of the PLAN shall not, without
         the consent of a participant, adversely affect the participant's
         rights under an award previously granted.  Further, the Board shall
         have no discretion without shareholder approval to alter the terms of
         this PLAN so as to increase the benefits to Outside  Directors as a
         class or any Outside Director individually.  In the event that the SEC
         as a condition to issuing a favorable no-action letter as contemplated
         by Paragraph 5 requests any additional restrictions or other
         clarifying changes with respect to the debenture options which may be
         granted to Outside Directors (or the related debentures or preferred
         stock), then the Board shall be authorized, to the extent consistent
         with the foregoing restrictions on its authority, to amend the PLAN in
         order to satisfy such condition.  This paragraph is intended to give
         the Board flexibility to adjust to changing economic conditions or
         changes in the tax laws as well as other changes in circumstances not
         foreseeable at the time of its creation in keeping with the provisions
         and intent of the PLAN.  In the event that the Board receives an
         opinion from a qualified expert that a change in the securities or tax
         laws or other laws renders the grant of debenture options
         impermissible or impractical, then the Board shall amend the PLAN to
         provide for the prospective grant of Non-Statutory Stock Options as
         provided in Paragraph 6 to Directors whenever Debenture Options would
         have been required to be granted to Outside Directors hereunder.
         Notwithstanding anything else to the contrary in this PLAN, none of
         the provisions contained in this PLAN defining the awards to be made
         to Outside Directors may be amended more than once every six months,
         except to





                                       17
<PAGE>   18
         comport with changes in the Internal Revenue Code, as amended, the
         Employee Retirement Income Security Act, or the rules thereunder.

20.      DURATION OF THE PLAN.    The PLAN shall remain in effect until all
         awards under the PLAN have been satisfied by the issuance of shares or
         debentures or the payment of cash, but no award shall be granted more
         than ten (10) years after the date the PLAN is approved by the
         shareholders of the COMPANY which shall be its effective date.

21.      CHANGE IN CONTROL.    For purposes of the PLAN, a "Change of Control"
         shall have occurred if:

         (a)     Any corporation, person or other entity (other than the
                 COMPANY) makes a tender or exchange offer for shares of common
                 stock and shares are purchased pursuant thereto ("Offer");

         (b)     More than fifty (50%) percent of the COMPANY's common stock is
                 acquired by any person or group;

         (c)     During any period of two (2) consecutive years, individuals
                 who at the beginning of such period were members of the Board
                 cease for any reason to constitute at least a majority thereof
                 (unless the election, or the nomination for election by the
                 COMPANY's shareholders, of each new director was approved by a
                 vote of at least (2/3) two-thirds of the directors then still
                 in office who were directors at the beginning of the period);
                 or

         (d)     The shareholders of the COMPANY approve a definitive agreement
                 to merge the COMPANY into another corporation, to consolidate
                 the COMPANY with another corporation, or to sell or otherwise
                 dispose of substantially all of the COMPANY's assets.

         In the event of occurrence of a Change of Control, then from and after
         the date of the first purchase of common stock pursuant to such offer,
         or the date on which public announcement of the acquisition of such
         percentage of stock shall have been made, or the date on which such
         change in the composition of the Board shall have occurred, or the
         date of any such shareholder approval, all stock options, stock
         appreciation rights and other rights granted pursuant to the PLAN
         which remain outstanding shall automatically become exercisable in
         full, whether or not otherwise exercisable.  Notwithstanding the
         foregoing, no "Change in Control" shall be deemed to have occurred by
         virtue of any of the events set forth above if, prior to the
         occurrence of such event, a majority of the Continuing Directors then
         in office determine that such event should not be treated as a "Change
         of Control" for purposes of this Plan.  "Continuing Director" shall
         mean any member of the Board of Directors of the Company who is a
         member of the Board of





                                       18
<PAGE>   19
         Directors as of the date of this Agreement and any person who
         subsequently becomes a member of the Board of Directors, if such
         person's nomination for election or election to the Board of Directors
         is recommended or approved by a majority of the Continuing Directors.

22.      INTENT:  SEPARABILITY.    All Incentive Stock Options granted
         hereunder are intended to comply with Section 422A and, to the extent
         applicable, Section 425 of the Internal Revenue Code of 1986, as
         amended, and all provisions of this PLAN and all Incentive Stock
         Options granted hereunder shall be construed in such manner as to
         effectuate that intent.  This PLAN and all stock options, stock
         appreciation rights, debenture options, and other rights granted
         hereunder are intended to satisfy the conditions of SEC Rule 16b-3
         under the Securities Exchange Act of 1934, as amended, and all
         provisions of this PLAN and all stock options, stock appreciation
         rights, debenture options, and other rights granted hereunder shall be
         construed in such manner as to effectuate that intent.  If any of the
         terms or provisions of this PLAN conflict with the requirements of
         Rule 16b-3 (as it may be amended from time to time) and/or Sections
         422A and 425 (as they may be amended from time to time), then such
         terms or provisions shall be deemed inoperative to the extent that
         they so conflict with such requirements.

23.      SPECIAL PROCEDURE FOR CERTAIN CREDIT ASSISTED TRANS-ACTIONS.  To the
         extent not inconsistent with the provisions of Section 422A of the
         Internal Revenue Code of 1986, as amended, or the provisions of Rule
         16b-3 issued by the Securities and Exchange Commission under the
         Securities Exchange Act of 1934, as amended, any holder of a stock
         option issued under this PLAN desiring to obtain credit from a broker,
         dealer, or other "creditor" as defined in Regulation T issued by the
         Board of Governors of the Federal Reserve System (provided such
         broker, dealer or creditor has been approved by the Committee
         ("Approved Creditor")) to assist in exercising such stock option, may
         deliver to such Approved Creditor a written exercise notice executed
         by such holder with respect to such stock option, together with
         written instructions to the COMPANY to deliver the stock issued upon
         such exercise of the stock option holder; upon receipt of such
         exercise notice and instructions in a form acceptable to the COMPANY,
         the COMPANY shall confirm to the Approved Creditor that it will
         deliver to the Approved Creditor on behalf of the stock option holder
         the stock issued upon such exercise of the option and covered by such
         instructions promptly following receipt of the exercise price from the
         Approved Creditor.  To the extent not inconsistent with Section 422A
         or Rule 16b-3, upon written request, the COMPANY may, in its
         discretion, but shall not be obligated to deliver to the Approved
         Creditor on behalf of the stock option holder shares of stock
         resulting from such a credit assisted exercise prior to receipt of the
         exercise price for such shares if the Approved Creditor has delivered
         to the COMPANY, in addition to the other documents contemplated by
         this Paragraph 23, the Approved Creditor's written agreement to pay
         the COMPANY such exercise price within five days after delivery of
         such shares.  The credit assistance contemplated by this Paragraph 23
         may include a margin loan by the Approved Creditor secured by the
         stock





                                       19
<PAGE>   20
         purchased upon exercise of a stock option or, in the case of a stock
         option holder who is not subject to Section 16 of the Securities
         Exchange Act of 1934, as amended, an immediate sale of some or all of
         such stock by the Approved Creditor to obtain or recover the exercise
         price which the Approved Creditor has committed to pay to the COMPANY
         on behalf of the stock option holder.





                                       20

<PAGE>   1
                                                                     EXHIBIT 4.6

                                 CHEMFIRST INC.

                         1980 LONG-TERM INCENTIVE PLAN


1.       PURPOSE.    The purpose of the CHEMFIRST INC. 1980 LONG-TERM INCENTIVE
         PLAN (the "PLAN") is to further the growth in earnings and market
         appreciation of CHEMFIRST INC. (the "COMPANY").  The PLAN provides
         long-term incentives to those officers and key employees of the
         COMPANY or its subsidiaries, partnerships or joint ventures who make
         substantial contributions to the COMPANY by their ability, loyalty,
         industry, and invention.  The COMPANY intends that the PLAN will
         thereby facilitate securing, retaining and motivating officers and key
         employees of high caliber and good potential.

2.       ADMINISTRATION.    The PLAN shall be administered by the Board of
         Directors (the "Board") of the COMPANY or by a Committee of the Board.
         Unless the board consists solely of "disinterested persons" within the
         meaning of Rule 16b-3 of the Securities and Exchange Commission, a
         Committee (the "Committee") of two or more directors, each of whom is
         a "disinterested person" within the meaning of such rule, shall make
         any decisions regarding the selection of officers and directors for
         participation under the PLAN and any decisions concerning the timing,
         pricing, and amount of a grant or award under the PLAN except for any
         grants or awards determined pursuant to a formula satisfying the
         provisions of Rule 16b-3(c)(ii) of the Securities and Exchange
         Commission.  The Board or the Committee, as the case may be, shall
         have full and final authority in its discretion to conclusively
         interpret the provisions of the PLAN and to decide all questions of
         fact arising in its application; to determine the employees and
         officers to whom awards shall be made under the PLAN; to determine the
         type of award to be made and the amount, size and terms of each such
         award; to determine the time when awards will be granted; and to make
         all other determinations necessary or advisable for the administration
         of this PLAN.  All provisions elsewhere in this PLAN dealing with
         administration of and decisions under this PLAN which refer to the
         Board shall be deemed to refer to the Committee whenever the Committee
         is administering this PLAN pursuant to this Section 2.

3.       SHARES SUBJECT TO PLAN.    Subject to the provisions of Paragraph
         10(c) and Paragraph 18 hereof, the shares that may be issued under the
         PLAN shall not exceed in the aggregate 1,500,000 shares of the common
         stock of the COMPANY.  Such shares may be authorized and unissued
         shares or treasury shares.  Except as otherwise provided herein, any
         share subject to an option or right which for any reason expires or is
         terminated unexercised as to such shares shall again be available
         under the PLAN.

4.       PARTICIPANTS.    Persons eligible to participate shall be limited to
         those officers and key employees of the COMPANY or any of its
         subsidiaries, or a partnership or joint
<PAGE>   2
         venture in which the COMPANY has at least a fifty (50%) percent
         ownership interest, who are in positions in which their decisions,
         actions and counsel significantly impact upon the performance of the
         COMPANY or its subsidiaries.  However, awards of Incentive Stock
         Options as provided in Paragraph 6 shall be limited to employees of
         the COMPANY or any of its subsidiaries.  Directors of the COMPANY who
         are not otherwise salaried employees of the COMPANY shall not be
         eligible to participate in the PLAN.

5.       AWARDS UNDER THE PLAN.    Awards under the PLAN may be in the form of
         stock options, options to purchase debentures convertible into common
         or convertible preferred stock of the COMPANY, stock appreciation
         rights, performance units, restricted stock, supplemental cash and
         such other forms as the Board may in its discretion deem appropriate,
         including any combination of the above.  The Board or Committee, as
         the case may be, shall make the grant of the awards.  No one employee
         shall receive awards in the form of stock in excess of one-fifth (1/5)
         of the total shares subject to this PLAN.  No fractional shares shall
         be issued under this PLAN, and the minimum value of any shares issued
         under this PLAN shall be the par value at the time of award.

6.       STOCK OPTIONS.    Options shall be evidenced by stock option
         agreements in such form and not inconsistent with this PLAN as the
         Board shall approve from time to time, which agreements shall contain
         in substance the following terms and conditions:

         (a)     OPTION PRICE.    The purchase price per share of stock
                 deliverable upon the exercise of an option shall not be less
                 than one hundred (100%) percent of the fair market value of
                 the stock on the day the option is granted, as determined by
                 the Board but in no event less than the par value of such
                 stock.  The fair market value per share of common stock shall
                 be the average of the highest and lowest prices of common
                 stock traded on the principal market of the stock on the day
                 the option is granted.  If no sale of the COMPANY's common
                 stock shall have been made on the principal market for the
                 stock on the day the option is granted, the fair market value
                 shall be based upon the next preceding day on which there was
                 a sale of such common stock.

         (b)     EXERCISE OF OPTION.    Each stock option agreement shall state
                 the period or periods of time in which the option may be
                 exercised by the participant, in whole or in part, which shall
                 be such period or periods of time as may be determined by the
                 Board, provided that the option period shall not commence
                 earlier than six (6) months after the date of the grant of an
                 Incentive Stock Option or six (6) months and one (1) day after
                 the grant of a Non-Statutory Stock Option nor end later than
                 ten (10) years after the date of the grant of an Incentive
                 Stock Option or ten (10) years and one (1) day after the date
                 of the grant of a





                                       2
<PAGE>   3
                 Non-Statutory Stock Option.  No Incentive Stock Option granted
                 before January 1, 1987 shall be exercisable while there is
                 outstanding (as defined in Section 422A of the Internal
                 Revenue Code as in effect with respect to such Incentive Stock
                 Options) any Incentive Stock Option theretofore granted to the
                 holder of such option to purchase stock in the COMPANY or any
                 corporation which (at the time of the granting of such option)
                 is a parent or a subsidiary corporation of the COMPANY, or any
                 predecessor of any such corporations.  An option shall be
                 outstanding until it is exercised in full or expires by reason
                 of lapse of time.  No employee/optionee shall own stock
                 possessing more than ten (10%) percent of the total combined
                 voting power of all classes of stock of the COMPANY or a
                 subsidiary at the time any option is granted to that
                 employee/optionee.

         (c)     PAYMENT FOR SHARES.    Stock purchased pursuant to an option
                 agreement should be paid for in full at the time of purchase,
                 either in the form of cash, common stock of the COMPANY at
                 fair market value, or in a combination thereof, as the Board
                 may determine.

         (d)     RIGHTS UPON TERMINATION OF EMPLOYMENT.    In the event that an
                 optionee dies or retires or becomes disabled or ceases to be
                 an employee of either the COMPANY or one or more of its
                 subsidiaries, or a partnership or joint venture in which the
                 COMPANY has at least a fifty (50%) percent ownership interest,
                 within six (6) months following a Change of Control (as
                 defined in Paragraph 21) of the COMPANY prior to expiration of
                 his option without having fully exercised his option, the
                 optionee or his legal successor shall have the right to
                 exercise the option during its term within a period of twelve
                 (12) months (or three (3) months in the case of an Incentive
                 Stock Option granted prior to August 1, 1984 or exercised
                 other than by a disabled employee or the legal successor of a
                 deceased employee) after the date of such termination of
                 employment, or such longer period as determined by majority
                 decision of the Board.  In the event of such termination of
                 employment by the COMPANY for cause, the optionee shall have
                 the right to exercise the option during its term within a
                 period of thirty (30) days after such termination.  In the
                 event of such termination of employment for any other reason,
                 the optionee shall have the right to exercise the option
                 during its term within a period of six (6) months (or thirty
                 (30) days in the case of an Incentive Stock Option granted
                 prior to August 1, 1984 or three (3) months in the case of an
                 Incentive Stock Option granted on or after August 1, 1984)
                 after such termination.

         (e)     CERTAIN LIMITATIONS.    In the case of Incentive Stock Options
                 granted before January 1, 1987, the aggregate fair market
                 value (determined as of the time an Incentive Stock Option is
                 granted) of the stock for which an officer or employee may be
                 granted Incentive Stock Options in any calendar year under all
                 plans of the COMPANY and its parent or subsidiary corporations
                 shall not exceed ONE HUNDRED THOUSAND DOLLARS ($100,000) plus
                 any unused limit





                                       3
<PAGE>   4
                 carryover to such year computed in accordance with Section
                 422A(c) (4) of the Internal Revenue Code as in effect with
                 respect to such Incentive Stock Options.  In the case of
                 Incentive Stock Options granted after December 31, 1986, the
                 aggregate fair market value (determined as of the time an
                 Incentive Stock Option is granted) of the stock with respect
                 to which Incentive Stock Options become exercisable for the
                 first time by an individual during any calendar year under all
                 plans of the COMPANY and its parent or subsidiary corporations
                 shall not exceed ONE HUNDRED THOUSAND DOLLARS ($100,000).

         (f)     DESIGNATION OF OPTIONS.    At the time any option is granted
                 under the Plan, the Board shall determine whether or not the
                 option is to be an Incentive Stock Option, and the option
                 shall be clearly identified as to its status as an Incentive
                 Stock Option or a Non-Statutory Stock Option (which is any
                 option that is not an Incentive Stock Option).

         (g)     AMENDMENT OF OPTIONS.    The Board of Directors of the COMPANY
                 shall be authorized to amend any or all stock options now or
                 hereafter outstanding so that they can be exercised for the
                 purchase of the COMPANY's convertible subordinated debentures
                 in accordance with the terms of this Paragraph 6(g) and
                 Paragraph 10 instead of common stock.  A separate series of
                 debentures and a separate series of preferred stock shall be
                 established to correspond to each group of amended stock
                 options having a particular grant date and exercise price.
                 Each such series of debentures will be convertible into the
                 corresponding series of preferred stock at a conversion price
                 per share equal to the exercise price per share provided in
                 the stock option agreement being amended, as determined
                 immediately prior to such amendment.  The term of the
                 debenture option and the maturity date of the debentures
                 subject thereto will be coextensive with the remaining term of
                 the option agreement being amended.

7.       STOCK APPRECIATION RIGHTS.    Stock appreciation rights shall be
         evidenced by stock appreciation right agreements in such form and not
         inconsistent with this PLAN as the Board shall approve from time to
         time, which agreements shall contain in substance the following terms
         and conditions:

         (a)     AWARD.    A stock appreciation right shall entitle the grantee
                 to receive upon exercise the excess of (a) the fair market
                 value of a specified number of shares of the COMPANY's common
                 stock at the time of exercise over (b) a specified price which
                 shall not be less than one hundred (100%) percent of the fair
                 market value of the stock at the time the appreciation right
                 was granted, or, if connected with a previously issued stock
                 option, not less than one hundred (100%) percent of the fair
                 market value of the stock at the time such option was granted.
                 A stock appreciation right may be granted in connection with
                 all or any portion of a previously or contemporaneously
                 granted stock option (including, in addition to





                                       4
<PAGE>   5
                 options granted under the PLAN, options granted under other
                 plans of the COMPANY), or not in connection with a stock
                 option.

         (b)     TERM.    Stock appreciation rights shall be granted for a
                 period of not less than one (1) year nor more than ten (10)
                 years, and shall be exercisable in whole or in part, at such
                 time or times and subject to such other terms and conditions
                 as shall be prescribed by the Board at the time of grant,
                 subject to all of the following:

                 (i)      No stock appreciation right shall be exercisable, in
                          whole or in part, during the six (6) month period
                          starting with the date of grant; and

                 (ii)     Stock appreciation rights will be exercisable only
                          during grantee's employment by the COMPANY or its
                          subsidiaries, partnerships or joint ventures in which
                          the COMPANY has at least a fifty (50%) percent
                          ownership interest, except that in the discretion of
                          the Board a stock appreciation right may be made
                          exercisable for up to thirty (30) days after the
                          grantee's employment is terminated for any reason
                          other than death, disability or retirement.  In the
                          event that a grantee dies or retires or becomes
                          disabled prior to exercise of stock appreciation
                          rights, the grantee or his legal successor shall have
                          the right to exercise the rights during their term
                          within a period of twelve (12) months after the date
                          of termination due to death, disability or
                          retirement, or such longer period as determined by
                          majority decision of the Board.

         (c)     PAYMENT.    Upon exercise of a stock appreciation right,
                 payment shall be made in the form of common stock of the
                 COMPANY (at fair market value on the date of exercise), in
                 cash, or in a combination thereof, as the Board may determine.

8.       PERFORMANCE UNITS.    Performance Units ("Units") shall be evidenced
         by performance unit agreements in such form and not inconsistent with
         this PLAN as the Board shall approve from time to time, which
         agreements shall contain in substance the following terms and
         conditions:

         (a)     PERFORMANCE PERIOD.    The performance period for a Unit shall
                 be established by the Board and shall be not more than five
                 (5) years, nor less than two (2) years.

         (b)     VALUATION OF UNITS.    A value for each Unit shall be
                 established by the Board, together with principal and minimum
                 performance targets to be achieved in respect of the Unit
                 during the performance period.  The participant shall be
                 entitled to receive one hundred (100%) percent of the value of
                 the Unit, if the





                                       5
<PAGE>   6
                 principal target is achieved during the performance period,
                 but shall be entitled to receive nothing for such Unit if the
                 minimum target is not achieved during the performance period.
                 The participant shall be entitled to receive a stated portion
                 of the value of the Unit for performance during the
                 performance period which meets or exceeds the minimum target
                 but fails to meet the principal target.

         (c)     PERFORMANCE TARGETS.    The performance targets established
                 under the PLAN shall relate to the COMPANY's performance (or
                 the performance of its subsidiaries, partnerships or joint
                 ventures in which the COMPANY has at least a fifty (50%)
                 percent ownership interest, herein collectively referred to in
                 this Paragraph (c) as "COMPANY's performance") over the
                 performance period, and may be established in terms of growth
                 in earnings or equity, ratio of earnings to shareholders'
                 equity or to total capital, or other performance standards as
                 determined by the Board in its discretion.  Multiple targets
                 may be used and may have the same or different weighting, and
                 they may relate to absolute COMPANY's performance, or the
                 COMPANY's performance as measured against the performance of
                 other companies, or the COMPANY's performance as measured
                 against other standards as determined by the Board in its
                 discretion.

         (d)     ADJUSTMENTS.    At any time prior to payment of the Units, the
                 Board may adjust previously established performance targets
                 and other terms and conditions, including the COMPANY's (or
                 its subsidiaries, partnerships or joint ventures in which the
                 COMPANY has at least a fifty (50%) percent ownership interest)
                 or other companies' financial performance for PLAN purposes,
                 to reflect major unforeseen events such as changes in laws,
                 regulations or accounting policies or procedures, mergers,
                 acquisitions or divestitures or extraordinary, unusual or
                 non-recurring items or events.

         (e)     PAYMENTS OF UNITS.    Following the conclusion of each
                 performance period, the Board shall determine the extent to
                 which performance targets have been attained for such period
                 as well as the other terms and conditions established by the
                 Board.  The Board shall determine what, if any, payment is due
                 on the Units and whether such payment shall be made in cash,
                 in common stock of the COMPANY, or partially in cash and
                 partially in common stock of the COMPANY.  Any payments made
                 in stock shall be calculated on the fair market value of the
                 stock.  Payment shall be made as promptly as practicable
                 following the end of the performance period unless deferred
                 subject to such terms and conditions as may be prescribed by
                 the Board.  The Board may authorize payments in common stock
                 under any previously existing Performance Unit Plans of the
                 COMPANY.  Any payments made in common stock of a previously
                 existing Performance Unit Plan shall be calculated on the fair
                 market value of the stock.





                                       6
<PAGE>   7
         (f)     TERMINATION OF EMPLOYMENT.    In the event that a participant
                 holding a Unit award ceases to be an employee of the COMPANY,
                 or its subsidiaries, partnerships or joint ventures in which
                 the COMPANY has at least a fifty (50%) percent ownership
                 interest, prior to the end of the applicable performance
                 period by reason of death, disability or retirement, with the
                 consent of the Board his Units, to the extent earned under the
                 applicable performance targets, shall be payable at the end of
                 the performance period in proportion to the active service of
                 the participant during the performance period, as determined
                 by the Board.  Upon any other termination of employment,
                 participation shall terminate forthwith and all outstanding
                 Units held by the participant shall be canceled.

         (g)     OTHER TERMS.    The Unit agreements shall contain such other
                 terms and provisions and conditions not inconsistent with this
                 PLAN as shall be determined by the Board.

9.       RESTRICTED STOCK AWARDS.    Restricted stock awards shall be evidenced
         by restricted stock agreements in such form and not inconsistent with
         this PLAN as the Board shall approve from time to time, which
         agreements shall contain in substance the following terms and
         conditions:

         (a)     RESTRICTION PERIOD.    Shares awarded pursuant to restricted
                 stock awards shall be subject to such conditions, terms and
                 restrictions (including performance achievement earnout,
                 forfeiture and transfer) and for such period or periods as
                 shall be determined by the Board.  The Board shall have the
                 power to permit, in its discretion, an acceleration of the
                 expiration of the applicable restriction period with respect
                 to any part or all of the shares awarded to a participant.

         (b)     RESTRICTIONS UPON TRANSFER.    Shares awarded, and the right
                 to vote such shares and to receive dividends thereon, may not
                 be sold, assigned, transferred, exchanged, pledged,
                 hypothecated, or otherwise encumbered, except as herein
                 provided, during the restriction period applicable to such
                 shares.  Notwithstanding the foregoing, and except as
                 otherwise provided in the PLAN, the participant shall have all
                 the other rights of a stockholder including, but not limited
                 to, the right to receive dividends and the right to vote such
                 shares.

         (c)     CERTIFICATES.    Each certificate issued in respect of shares
                 awarded to a participant shall be deposited with the COMPANY,
                 or its designee, and shall bear the following legend:

                 "This certificate and the shares of stock represented hereby
                 are subject to the terms and conditions (including forfeiture
                 and restrictions against transfer) contained in the CHEMFIRST
                 INC. 1980 Long-Term Incentive Plan and an Agreement entered
                 into between the registered owner and





                                       7
<PAGE>   8
                 CHEMFIRST INC.  Release from such terms and conditions shall
                 be obtained only in accordance with the provisions of the PLAN
                 and Agreement, a copy of each of which is on file in the
                 office of the Secretary of CHEMFIRST INC., Jackson,
                 Mississippi.

         (d)     LAPSE OF RESTRICTIONS.    The Agreement shall specify the
                 conditions and terms upon which any restrictions upon shares
                 under the PLAN shall lapse, as determined by the Board.  Upon
                 the lapse of such restrictions, shares of common stock, free
                 of any restrictive legend shall be issued to the participant
                 or his legal representative.

10.      DEBENTURE OPTIONS.    Debenture options shall be evidenced by
         debenture option agreements in such form and not inconsistent with the
         PLAN as the Board shall approve from time to time, which agreements
         shall be subject to the following terms and conditions:

         (a)     OPTION PROVISIONS.    Regular debenture options will be
                 granted to purchase debentures of a particular series.
                 Special debenture options to purchase debentures of a
                 particular series can be created upon the amendment of
                 outstanding stock options to convert them into debenture
                 options as authorized by Paragraph 6(g).  Regular debenture
                 options will be exercisable at any time within ten (10) years
                 after grant.  Special debenture options will be exercisable
                 during the remaining term initially prescribed in the
                 converted stock option.  Debenture options will not be
                 transferable except by operation of law and may be exercised
                 during the optionee's lifetime only by the optionee.  The
                 purchase price upon exercise of a debenture option will be par
                 (that is, the principal amount of the debenture) and shall be
                 paid in full in cash at the time of purchase.  In the event
                 that the holder of a debenture option dies or retires or
                 becomes disabled or ceases to be an employee of either COMPANY
                 or one or more of its subsidiaries, or a partnership or joint
                 venture in which the COMPANY has at least a fifty (50%)
                 percent ownership interest, within six (6) months following a
                 Change of Control (as defined in Paragraph 21) of the COMPANY
                 prior to expiration of the debenture option without having
                 fully exercised his option, the holder of the debenture option
                 or his legal successor shall have the right to exercise the
                 debenture option during its term within a period of twelve
                 (12) months after the date of such death, disability,
                 retirement or termination of employment or such longer period
                 as determined by majority decision of the Board.  In the event
                 of such termination of employment by the COMPANY for cause,
                 the optionee shall have the right to exercise a debenture
                 option during its term within a period of thirty (30) days
                 after such termination.  In the event of such termination of
                 employment for any other reason, the optionee shall have the
                 right to exercise a debenture option during its term within a
                 period of six (6) months after such termination.





                                       8
<PAGE>   9
         (b)     DEBENTURE TERMS.    Debentures acquired upon exercise of a
                 regular debenture option will mature ten (10) years after
                 grant of the regular debenture option.  Debentures acquired
                 upon exercise of a special debenture option will mature on the
                 date initially prescribed as the expiration date of the
                 converted stock option.  The debentures will bear interest at
                 a floating rate of one (1%) percent less than the rate
                 publicly announced as its prime rate by Deposit Guaranty
                 National Bank or such other bank as is designated by the Board
                 of Directors of the COMPANY or the maximum legal rate under
                 applicable law.  Interest on the debentures will be payable
                 semi-annually on January 1 and July 1 of each year.
                 Debentures may not be transferred or pledged without written
                 consent of the COMPANY.  The debentures will be subordinated
                 generally to the COMPANY's other indebtedness.

         (c)     CONVERSION RIGHTS.    Each debenture will contain conversion
                 rights exercisable at any time more than six (6) months after
                 the award of the debenture option and prior to maturity or
                 redemption of the debenture (except while the debentures are
                 pledged).  Debentures of each series will be convertible into
                 a special series of preferred stock of the COMPANY based on a
                 price per share of the preferred stock equal to (a) the fair
                 market value of the COMPANY's common stock (determined as
                 provided in Paragraph 6 above) on the date of grant of the
                 option to purchase the debenture if the debenture is acquired
                 under a regular debenture option or (b) the exercise price per
                 share provided in the amended stock option immediately prior
                 to its conversion into a debenture option if the debenture is
                 acquired under a special debenture option.  Each share of
                 preferred stock issued upon conversion of a debenture will in
                 turn be immediately convertible into one (1) share of common
                 stock of the COMPANY, subject to adjustment pursuant to the
                 following sentence.  In the event of a reclassification,
                 recapitalization,merger, consolidation, reorganization,
                 issuance of warrants, rights or debentures, stock dividend,
                 stock split or reverse stock split, cash dividend, property
                 dividend, including, without limitation, a distribution of the
                 stock of a subsidiary, combination or exchange of shares,
                 repurchase of shares, or any other change in corporate
                 structure which in the judgment of the Board materially
                 affects the value of the Company's shares subsequent to grant
                 of a regular debenture option or subsequent to the conversion
                 of a stock option into a special debenture option, the Board
                 shall determine the appropriate adjustments, if any, to the
                 number of shares of common stock of the Company issuable upon
                 conversion of preferred stock under the preceding sentence.

         (d)     REDEMPTION AND CALL OF DEBENTURES.    A debenture shall be
                 redeemable by the holder at par on any interest payment date
                 which is more than one (1) year after issuance of the
                 debenture.  Debentures may be called by the COMPANY for
                 repayment as of any interest payment date following twelve
                 (12) months prior notice.  Upon any redemption pursuant to
                 call by the COMPANY, the debenture holder will be paid par
                 plus interest to the date of redemption.





                                       9
<PAGE>   10
         (e)     PLEDGE OF DEBENTURES.    If any debenture is pledged by the
                 holder for a loan with the consent of the COMPANY, the
                 debenture will not be convertible while the debenture remains
                 pledged.  Upon any default on the loan for which a debenture
                 is pledged with the consent of the COMPANY, the lender may
                 redeem the debenture at par on any interest payment date.
                 Upon notice to the COMPANY from the purchaser and the lender
                 to which a debenture has been pledged that the debt has been
                 discharged, the conversion right will automatically be
                 restored.  If a holder sells, assigns, transfers or pledges a
                 debenture without the COMPANY's consent, the conversion right
                 with respect to the debenture will permanently cease to exist.

11.      SUPPLEMENTAL CASH PAYMENTS.    Subject to the Board's discretion, any
         options, stock appreciation rights, performance units or restricted
         stock agreements may provide for the payment by the COMPANY of a
         supplemental cash payment to a participant promptly after the exercise
         of a stock option, debenture option or stock appreciation right, or at
         the time of payment of a performance unit or at the end of a
         restriction period of a restricted stock award.  Supplemental cash
         payments shall be subject to such terms and conditions as shall be
         provided by the Board at the time of grant, provided that in no event
         shall the amount of each payment exceed:

         (a)     In the case of an option, the excess of the fair market value
                 of a common share on the date of exercise over the option
                 price multiplied by the number of shares for which such option
                 is exercised, or

         (b)     In the case of a stock appreciation right, performance unit or
                 restricted stock award, the value of the shares and other
                 consideration issued in payment of such award.

         (c)     In the case of a debenture option, the excess of the fair
                 market value of the debentures purchased upon exercise of the
                 debenture option over the par value of the purchased
                 debentures.

12.      GENERAL RESTRICTIONS.    Each award under the PLAN shall be subject to
         the requirement that, if at any time the Board shall determine that
         (i) the listing, registration or qualification of the shares of common
         stock subject or related thereto upon any securities exchange or under
         any state or federal law, or (ii) the consent or approval of any
         government regulatory body, or (iii) an agreement by the recipient of
         an award with respect to the disposition of shares of common stock, is
         necessary or desirable as a condition of, or in connection with, the
         granting of such award or the issue or purchase of shares of common
         stock thereunder, such award may not be consummated in whole or in
         part unless such listing, registration, qualification, consent,
         approval or agreement shall have been effected or obtained free of any
         conditions not acceptable to the Board.





                                       10
<PAGE>   11
13.      RIGHTS OF A SHAREHOLDER.    The recipient of any award under the PLAN,
         unless otherwise provided by the PLAN, shall have no rights as a
         shareholder with respect thereto unless and until certificates for
         shares of common stock are issued to him.

14.      RIGHT TO TERMINATE EMPLOYMENT.    Nothing in the PLAN or in any
         agreement entered into pursuant to the PLAN shall confer upon any
         participant the right to continue in the employment of the COMPANY, or
         its subsidiaries, partnerships or joint ventures in which the COMPANY
         has at least a fifty (50%) percent ownership interest, or affect any
         right which the COMPANY, or such subsidiaries, partnerships or joint
         ventures, may have to terminate the employment of such participant.
         For purposes of this Plan and notwithstanding anything to the contrary
         contained elsewhere in this Plan, no termination of a Participant's
         employment with the Company within the meaning of this Plan shall be
         deemed to have occurred by virtue of the Company entering into any
         agreement with respect to, the public announcement of, the approval by
         the Company's shareholders or directors of, or the consummation of,
         any transaction or series of integrated transactions, if, prior to the
         occurrence of such transaction or series of integrated transactions, a
         majority of the Continuing Directors (as defined in Section 21 hereof)
         then in office determine that such transaction or series of integrated
         transactions should not be treated as a termination of a Participant's
         employment with the Company within the meaning of this Plan.

15.      WITHHOLDING.    Whenever the COMPANY proposes or is required to issue
         or transfer shares of common stock or debentures under the PLAN, the
         COMPANY shall have the right to require the recipient to remit to the
         COMPANY an amount sufficient to satisfy any federal, state and/or
         local withholding tax requirements prior to the delivery of any
         certificate or certificates for such shares or debentures.  Whenever
         under the PLAN payments are to be made in cash, such payments shall be
         net of an amount sufficient to satisfy any federal, state and/or local
         withholding tax requirements.

16.      NON-ASSIGNABILITY.    No award under the PLAN shall be assignable or
         transferable by the recipient thereof except by will or by the laws of
         descent and distribution or by such other means as the Board may
         approve from time to time.  During the life of the recipient, such
         award shall be exercisable only by such person's guardian or legal
         representative.

17.      NON-UNIFORM DETERMINATIONS.    The Board's determination under the
         PLAN (including without limitation determinations of the persons to
         receive awards, the form, amount and timing of such awards, the terms
         and provisions of such awards and the agreements evidencing same, and
         the establishment of values and performance targets)





                                       11
<PAGE>   12
         need not be uniform and may be made by it selectively among persons
         who receive, or are eligible to receive, awards under the PLAN,
         whether or not such persons are similarly situated.

18.      ADJUSTMENTS IN STOCK.    In the event of a reclassification,
         recapitalization, merger, consolidation, reorganization, issuance of
         warrants, rights or debenture, stock dividend, stock split or reverse
         stock split, cash dividend, property dividend, including, without
         limitation, a distribution of the stock of a subsidiary, combination
         or exchange of shares, repurchase of shares, or any other change in
         corporate structure, which in the judgment of the Board, materially
         affects the value of the Company's shares, the Board shall determine
         the appropriate adjustments, if any, to (a) the number of shares of
         common stock which may be issued under the Plan and (b) the number of
         shares issuable and the exercise price per share pursuant to an
         outstanding award theretofore granted under this Plan.

19.      AMENDMENT OR TERMINATION.    The Board may amend, modify, suspend or
         terminate the PLAN at any time, except that any modification or
         amendment which would (a) increase the aggregate number of shares
         which may be issued under the PLAN (other than an increase pursuant to
         Paragraph 10(c) or Paragraph 18 hereof), (b) materially modify the
         requirements as to eligibility for participation in the PLAN, or (c)
         materially increase the benefits accruing to participants in the PLAN
         within the meaning of Rule 16B-3 promulgated by the Securities and
         Exchange Commission under the Securities Exchange Act of 1934, as
         amended ("Rule 16b-3"), shall be effective only if it is approved by
         the shareholders of the Company at the next annual meeting of
         shareholders after the date of adoption by the Board of such
         modification or amendment; provided, however, that to the extent that
         Rule 16b-3 is amended hereafter to eliminate the requirement of
         shareholder approval with respect to any amendment described in
         clauses (a), (b) or (c) of this sentence, shareholder approval shall
         not be required under this Paragraph 19.  The termination or any
         modification, suspension or amendment of the PLAN shall not, without
         the consent of a participant, adversely affect the participant's
         rights under an award previously granted.

20.      DURATION OF THE PLAN.    The PLAN shall remain in effect until all
         awards under the PLAN have been satisfied by the issuance of shares or
         the payment of cash, but no award shall be granted more than ten (10)
         years after the date the PLAN is approved by the shareholders of the
         COMPANY which shall be its effective date.

21.      CHANGE IN CONTROL.    For purposes of the Plan, a "Change of Control"
         shall have occurred if:





                                       12
<PAGE>   13
         (a)     Any corporation, person or other entity (other than the
                 COMPANY) makes a tender or exchange offer for shares of Common
                 Stock and shares are purchased pursuant thereto ("Offer");

         (b)     More than fifty (50%) percent of the COMPANY's Common Stock is
                 acquired by any person or group;

         (c)     During any period of two (2) consecutive years, individuals
                 who at the beginning of such period were members of the Board
                 cease for any reason to constitute at least a majority thereof
                 (unless the election, or the nomination for election by the
                 COMPANY's shareholders, of each new director was approved by a
                 vote of at least (2/3) two-thirds of the directors then still
                 in office who were directors at the beginning of the period);
                 or

         (d)     The shareholders of the COMPANY approve a definitive agreement
                 to merge or consolidate the COMPANY with or into another
                 corporation or to sell or otherwise dispose of substantially
                 all its assets.

         In the event of occurrence of a Change of Control, then from and after
         the date of the first purchase of common stock pursuant to such offer,
         or the date on which public announcement of the acquisition of such
         percentage of stock shall have been made, or the date on which such
         change in the composition of the Board shall have occurred, or the
         date of any such shareholder approval, all stock options granted
         pursuant to the Plan which remain outstanding (except Incentive Stock
         Options granted prior to August 1, 1984) shall automatically become
         exercisable in full, whether or not otherwise exercisable.
         Notwithstanding the foregoing, no "Change of Control" shall be deemed
         to have occurred by virtue of any of the events set forth above if,
         prior to the occurrence of such event, a majority of the Continuing
         Directors then in office determine that such event should not be
         treated as a "Change of Control" for purposes of this Plan.
         "Continuing Director" shall mean any member of the Board of Directors
         of the Company who is a member of the Board of Directors as of the
         date of this Agreement and any person who subsequently becomes a
         member of the Board of Directors, if such person's nomination for
         election or election to the Board of Directors is recommended or
         approved by a majority of the Continuing Directors.





                                       13

<PAGE>   1
                                                                     EXHIBIT 4.7

================================================================================



                        FIRST MISSISSIPPI CORPORATION





                       DEPOSIT GUARANTY NATIONAL BANK
                                   Trustee



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



                                  INDENTURE


                        DATED AS OF NOVEMBER 14, 1994

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



                          1994-1 SERIES CONVERTIBLE


                           SUBORDINATED DEBENTURES




================================================================================

<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                      Page
                                                                      ----
<S>                                                                    <C>
PARTIES ...........................................................     1

RECITALS ..........................................................     1
       Purpose of Indenture .......................................     1
       Form of Debenture ..........................................     1
       Form of Trustee's Certificate of Authentication ............     7
       Form of Conversion Notice ..................................     8
       Compliance with Legal Requirements .........................     8
       Consideration for Indenture ................................     9



                                  ARTICLE ONE
                                  Definitions

Section 1.01       Definitions ....................................     9
                         Authorized Newspaper .....................     9
                         Board of Directors .......................     9
                         Board Resolution .........................     9
                         Common Stock .............................     9
                         Company ..................................    10
                         Conversion Date ..........................    10
                         Corporation ..............................    10
                         Debenture or Debentures; Outstanding .....    10
                         Debentureholder ..........................    11
                         Due Date .................................    11
                         Event of Default .........................    11
                         Indenture ................................    11
                         Interest Payment Date ....................    11
                         Interest Rate ............................    11
                         Issuance Date ............................    11
                         Officers' Certificate ....................    11
                         Opinion of Counsel .......................    11
                         Prime Interest Rate ......................    12
                         Principal Office of the Trustee ..........    12
                         Record Date ..............................    12
                         Responsible Officer ......................    12
                         Senior Indebtedness ......................    13
                         1994-1 Series Stock ......................    13
                         Subsidiary or Subsidiaries ...............    13
                         Trustee ..................................    14
                         Trust Indenture Act of 1939 ..............    14
</TABLE>





                                       i
<PAGE>   3
<TABLE>
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                                  ARTICLE TWO
            Issue, Description, Execution, Registration and
                             Exchange of Debentures


Section 2.01.      Designation, Amount and Issue
                   of Debentures ..............................        14
Section 2.02.      Form of Debentures .........................        15
Section 2.03.      Denomination and Date of Debentures ........        15
Section 2.04.      Execution of Debentures ....................        16
Section 2.05.      Registration, Registration of Transfer
                   and Exchange of Debentures .................        17
Section 2.06.      Mutilated, Destroyed, Lost or Stolen
                   Debentures .................................        17
Section 2.07.      Temporary Debentures .......................        18
Section 2.08.      Cancellation of Debentures .................        19
Section 2.09.      Benefits of Indenture Provisions ...........        19
Section 2.10.      Maintenance of Office or
                   Agency by Trustee ..........................        19
Section 2.11.      Condition to Issuance of Debentures ........        20

                                  ARTICLE THREE
                     Prepayment and Redemption of Debentures

Section 3.01.      Mandatory and Optional Prepayment
                   of Debentures ..............................        20
Section 3.02.      Redemption of Debentures ...................        20
Section 3.03.      Deposit of Monies for Redemption
                   of Prepayment ..............................        21
Section 3.04.      Limitation on Prepayment ...................        22
Section 3.05.      Holder's Right to Elect Redemption .........        22

                                  ARTICLE FOUR
                           Subordination of Debentures

Section 4.01.      Agreement that Debentures be Subordinate ...        22
Section 4.02.      Subordination to Senior Indebtedness .......        22
Section 4.03.      Payment to Holders of Senior Indebtedness
                   of Certain Amounts Received by
                   Debentureholders ...........................        24
Section 4.04.      Notice to Trustee of Specified Events;
                   Reliance on Certificate of Liquidating
                   Agent ......................................        25
Section 4.05.      Subrogation ................................        26
Section 4.06.      Obligation to Pay Not Impaired .............        26
Section 4.07.      Reliance by Senior Indebtedness on
                   Subordination Provisions ...................        26
Section 4.08.      Certain Payments and Credits Permitted .....        27
Section 4.09.      Subordination Not to be Prejudiced by
                   Certain Acts ...............................        27
</TABLE>





                                       ii
<PAGE>   4
<TABLE>
<CAPTION>
                                                                      Page
                                                                      ----
<S>                                                                    <C>
Section 4.10.      Trustee Authorized to Effectuate
                   Subordination ..............................        27
Section 4.11.      Trustee's Rights Regarding Senior
                   Indebtedness Held by It, Etc. ..............        27
Section 4.12.      Trustee and Paying Agents Not Chargeable
                   with Knowledge Until Notice ................        28
Section 4.13       1984-A, 1985-A, 1986-A, 1982-A, 1982-B,
                   1982-C, 1982-D, 1983-A, 1984-B, 1987-A,
                   1988-A, 1988-1, 1989-A, 1989-1, 1989-2,
                   1990-1, 1990-2, 1991-1 and 1991-2 Series
                   Convertible Subordinated Debentures...........      28

                                  ARTICLE FIVE
                            Conversion of Debentures

Section 5.01.      Conversion Privilege; Conversion Price .....        29
Section 5.02.      Conversion Period; Limitation on Exercise ..        29
Section 5.03.      Manner of Exercising Conversion Privilege ..        31
Section 5.04.      Fractional Shares ..........................        32
Section 5.05.      Notice of Certain Corporate Action .........        32
Section 5.06.      Company to Reserve Stock ...................        33
Section 5.07.      Taxes on Conversions .......................        33
Section 5.08.      Covenant as to Stock .......................        33
Section 5.09.      Provision in Case of Consolidation,
                   Merger or Sale .............................        34
Section 5.10.      Trustee's Disclaimer of Responsibility
                   for Certain Matters ........................        34
Section 5.11.      Covenant as to Conversion Rights ...........        35

                                   ARTICLE SIX
                       Particular Covenants of the Company

Section 6.01.      Payment of Principal and Interest ..........        35
Section 6.02.      Offices for Notices, Payments and
                   Conversions ................................        35
Section 6.03.      Paying Agents ..............................        35
Section 6.04.      Appointment to Fill a Vacancy in Office
                   of Trustee .................................        36
Section 6.05.      Further Instruments and Acts ...............        36
Section 6.06.      Payment of Taxes; Maintenance of Corporate
                   Existence; Maintenance of Properties;
                   Property Insurance .........................        36
Section 6.07.      Annual Review Certificate ..................        38
Section 6.08.      No Lien Created ............................        38

                                  ARTICLE SEVEN
               Debentureholders' Lists and Reports by the Company
                                 and the Trustee

Section 7.01.      Debentureholders' Lists ....................        38
Section 7.02       Preservation and Disclosure of Lists .......        39
</TABLE>





                                      iii
<PAGE>   5
<TABLE>
<CAPTION>
                                                                      Page
                                                                      ----
<S>                                                                    <C>
Section 7.03.      Reports by the Company .....................        41
Section 7.04.      Reports by the Trustee .....................        42

                                  ARTICLE EIGHT
                  Remedies of the Trustee and Debentureholders
                               on Event of Default

Section 8.01.      Events of Default ..........................        44
Section 8.02.      Payment of Debentures on Default;
                   Suit Therefor ..............................        46
Section 8.03.      Application of Monies Collected by
                   Trustee ....................................        48
Section 8.04.      Proceedings by Debentureholders ............        49
Section 8.05.      Proceedings by Trustee .....................        50
Section 8.06.      Remedies Cumulative and Continuing .........        50
Section 8.07.      Direction of Proceedings and Waiver of
                   Defaults by Majority of Debentureholders ...        50
Section 8.08.      Notice of Defaults .........................        51
Section 8.09.      Undertaking to Pay Costs ...................        51
Section 8.10.      Enforcement of Conversion Rights ...........        52
Section 8.11.      Waiver of Stay, Extension or Usury Laws ....        52


                                  ARTICLE NINE
                             Concerning the Trustee

Section 9.01.      Duties and Liabilities of Trustee ..........        52
Section 9.02.      Reliance on Documents and Counsel ..........        54
Section 9.03.      No Responsibility for Recitals or
                   Certain Other Matters ......................        55
Section 9.04.      Trustee, Paying Agent, Conversion Agent or
                   Registrar May Own Debentures ...............        55
Section 9.05.      Monies to be Held in Trust .................        55
Section 9.06.      Compensation and Expenses of Trustee .......        565
Section 9.07.      Officers' Certificate as Evidence ..........        56
Section 9.08.      Conflicting Interest of the Trustee ........        56
Section 9.09.      Eligibility of Trustee .....................        64
Section 9.10.      Resignation or Removal of Trustee;
                   Appointment of Successor Trustee ...........        64
Section 9.11.      Acceptance by Successor Trustee ............        66
Section 9.12.      Succession by Merger and Certain
                   Other Events ...............................        66
Section 9.13.      Limitation on Rights of Trustee as
                   a Creditor .................................        67
Section 9.14.      Records of Trustee .........................        71
</TABLE>





                                       iv
<PAGE>   6
<TABLE>
<CAPTION>
                                                                      Page
                                                                      ----
<S>                                                                    <C>
                                   ARTICLE TEN
                         Concerning the Debentureholders

Section 10.01.     Action by Debentureholders .................        72
Section 10.02.     Proof of Execution by
                   Debentureholders; Evidence of Holdings .....        72
Section 10.03.     Who Deemed Absolute Owners .................        73
Section 10.04.     Company-owned Debentures Disregarded .......        73
Section 10.05.     Revocation of Consents; Future
                   Holders Bound ..............................        74
Section 10.06.     Transfer of Debentures .....................        74

                                 ARTICLE ELEVEN
                           Debentureholders' Meetings

Section 11.01.     Purposes of Meetings .......................        75
Section 11.02.     Call of Meetings by Trustee ................        75
Section 11.03.     Call of Meetings by Company or
                   Debentureholders ...........................        75
Section 11.04.     Qualifications for Voting ..................        76
Section 11.05.     Regulations ................................        76
Section 11.06.     Voting .....................................        77
Section 11.07.     No Delay of Rights by Meeting ..............        77

                                 ARTICLE TWELVE
                             Supplemental Indentures

Section 12.01.     Supplemental Indentures without
                   Consent of Debentureholders ................        77
Section 12.02.     Supplemental Indentures with
                   Consent of Debentureholders ................        79
Section 12.03.     Compliance with Trust Indenture Act;
                   Effect of Supplemental Indentures ..........        80
Section 12.04.     Notation on Debentures .....................        80
Section 12.05.     Evidence of Compliance of Supplemental
                   Indenture to be Furnished Trustee ..........        81


                                ARTICLE THIRTEEN
                  Consolidation, Merger and Sale by the Company

Section 13.01.     Consolidation, Merger or Sale of
                   Assets Permitted ...........................        81
Section 13.02.     Succession by Successor Corporation ........        81
Section 13.03.     Evidence to be Furnished Trustee ...........        82


                                ARTICLE FOURTEEN
            Satisfaction and Discharge of Indenture; Unclaimed Monies

Section 14.01.     Discharge of Indenture .....................        82
</TABLE>





                                       v
<PAGE>   7
<TABLE>
<CAPTION>
                                                                      Page
                                                                      ----
<S>                                                                    <C>
Section 14.02.     Deposited Monies to be Held in
                   Trust by Trustee ...........................        83
Section 14.03.     Paying Agent to Repay Monies Held ..........        83
Section 14.04.     Unclaimed Monies ...........................        83


                                 ARTICLE FIFTEEN
                Immunity of Incorporators, Stockholders, Officers
                                  and Directors

Section 15.01.     Indenture and Debentures Solely
                   Corporate Obligations ......................        84


                                 ARTICLE SIXTEEN
                            Miscellaneous Provisions

Section 16.01.     Provisions Binding on Company's
                   Successors .................................        84
Section 16.02.     Official Acts by Successor Corporation .....        84
Section 16.03.     Notices ....................................        84
Section 16.04.     Subscription ...............................        85
Section 16.05.     Governing Law ..............................        85
Section 16.06.     Evidence of Compliance with Conditions
                   Precedent ..................................        85
Section 16.07.     Legal Holidays .............................        85
Section 16.08.     Trust Indenture Act to Control .............        86
Section 16.09.     Table of Contents and Headings .............        86
Section 16.10.     Method of Publication or Other Notice
                   When Indenture Provision for Publication
                   or Notice Cannot be Followed ...............        86
Section 16.11.     Invalidity of Some Provisions Shall
                   Not Affect Others ..........................        86
Section 16.12.     Execution in Counterparts ..................        86



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

Exhibit A.         Form of Consent to Pledge (See Section 10.06)
</TABLE>





                                       vi
<PAGE>   8


            THIS INDENTURE ("Indenture"), is dated as of November 14, 1994,
between FIRST MISSISSIPPI CORPORATION, a corporation duly organized and
existing under the laws of the State of Mississippi (hereinafter sometimes
referred to as the "Company"), and DEPOSIT GUARANTY NATIONAL BANK, a national
banking association organized under the laws of the United States (hereinafter
sometimes referred to as the "Trustee").


                                  WITNESSETH:


            WHEREAS, for its lawful corporate purposes, the Company has duly
authorized the issue of its 1994-1 Series Convertible Subordinated Debentures
(hereinafter sometimes referred to as the "Debentures"), in the aggregate
principal amount of $21,312.50, and to provide the terms and conditions upon
which the Debentures are to be authenticated, issued and delivered, the Company
has duly authorized the execution of this Indenture; and


            WHEREAS, the text of the Debentures is to be substantially in the
following form:


                              [Face of Debentures]



THIS DEBENTURE MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, PLEDGED, OR OTHERWISE
HYPOTHECATED EXCEPT AS PERMITTED UNDER SECTION 10.06. OF THE INDENTURE REFERRED
TO HEREIN.  ANY ATTEMPTED SALE, ASSIGNMENT, TRANSFER, PLEDGE OR OTHER
HYPOTHECATION OF THIS DEBENTURE NOT MADE IN ACCORDANCE WITH SUCH SECTION 10.06.
AND ANY FORECLOSURE ON A PLEDGE OR HYPOTHECATION NOT MADE IN ACCORDANCE WITH
SUCH SECTION 10.06., WILL RESULT IN TERMINATION OF THE CONVERSION RIGHT OF THIS
DEBENTURE.  SUCH CONVERSION RIGHT MAY NOT BE EXERCISED AT ANY TIME THAT THIS
DEBENTURE IS PLEDGED OR OTHERWISE SERVES AS COLLATERAL FOR ANY LOAN.



No._____________________________           $_____________________________

Issuance Date: _________________           Due Date:  November 13, 2004
                                           Conversion Price: $21.3125 per share





                                       1
<PAGE>   9
                         FIRST MISSISSIPPI CORPORATION

                           1994-1 SERIES CONVERTIBLE
                             SUBORDINATED DEBENTURE

            FIRST MISSISSIPPI CORPORATION, a corporation duly organized and
existing under the laws of the State of Mississippi (herein referred to as the
"Company," which term includes any successor corporation under the Indenture
referred to on the reverse hereof), for value received, hereby promises to pay
to ________________________________________________________________, the
principal sum of____________________________________________ Dollars at the
office or agency of the Company in Jackson, Mississippi, on the Due Date
referred to above, in such coin or currency of the United States of America as
at the time of payment shall be legal tender for the payment of public and
private debts, and to pay interest on said principal sum at a floating interest
rate per annum (determined from time to time as provided in the Indenture)
equal to 1% below the Prime Interest Rate (as defined in and pursuant to the
Indenture) or the maximum legal rate under applicable law, if less, at either
of said office or agency, from the Issuance Date referred to above, or from the
most recent interest payment date to which interest has been paid or duly
provided for; and such interest shall be payable (i) semi-annually on January 1
and July 1 of each year (each such date being referred to herein as an
"Interest Payment Date"), commencing on the first Interest Payment Date
following the date of original issuance, and (ii) on the Due Date referred to
above, until payment of said principal sum has been made or duly provided for;
and provided further, however, that payment of interest payable on any Interest
Payment Date may be made by check mailed to the address of the person entitled
thereto as such address shall appear on the register maintained by the
Debenture registrar or to such other address as is designated by such holder in
writing as provided below.

            The interest installment so payable on any Interest Payment Date
will, subject to certain exceptions provided in the Indenture referred to on
the reverse hereto, be paid to the person in whose name this Debenture (or any
Debenture or Debentures evidencing the same debt) is registered at the close of
business on the Record Date for such interest installment, at his address
appearing on the Debenture register or such other address as is designated by
such holder in writing received by the Company and the Debenture registrar
prior to such Record Date, which Record Date shall be the day (whether or not a
business day) next preceding such Interest Payment Date.

            The provisions of this Debenture are continued on the reverse
hereof, and such continued provisions shall for all purposes have the same
effect as though fully set forth at this time.





                                       2
<PAGE>   10
            IN WITNESS WHEREOF, FIRST MISSISSIPPI CORPORATION has caused this
Debenture to be executed in its corporate name by the manual or facsimile
signature of its President or one of its Vice Presidents and impressed or
imprinted with its corporate seal or facsimile thereof, attested by the manual
or facsimile signature of its Secretary or one of its Assistant Secretaries.



                                         FIRST MISSISSIPPI CORPORATION


Attest:                                  By:                                
       ------------------------------        -------------------------------
            Secretary                          President


                                [Corporate Seal]






                                       3
<PAGE>   11
                          [Reverse Side of Debenture]

                         FIRST MISSISSIPPI CORPORATION
                           1994-1 SERIES CONVERTIBLE
                             SUBORDINATED DEBENTURE

            This Debenture is one of a duly authorized issue of Debentures of
the Company, designated as its 1994-1 Series Convertible Subordinated
Debentures (herein referred to as the "Debentures"), limited to the aggregate
principal amount of $21,312.50 all issued and to be issued under and pursuant
to an Indenture dated as of November 14, 1994 (herein referred to as the
"Indenture"), duly executed and delivered by the Company to Deposit Guaranty
National Bank (herein referred to as the "Trustee," which term includes any
Successor Trustee under the Indenture), to which Indenture and all indentures
supplemental hereto reference is hereby made for a description of the
respective rights thereunder of the Trustee, the Company and the holders of the
Debentures.

            The indebtedness evidenced by the Debentures is, to the extent
provided in the Indenture, subordinate and junior to the prior payment in full
of the principal of and interest on all Senior Indebtedness, as defined in the
Indenture, and this Debenture is issued subject to the provisions of the
Indenture with respect thereto.  Each holder of this Debenture, by accepting
the same, agrees to be bound by such provisions of the Indenture and authorizes
and directs the Trustee to take such action on his behalf as may be necessary
or appropriate to acknowledge or effectuate the subordination of this Debenture
as provided in the Indenture and appoints the Trustee his attorney-in-fact for
any and all such purposes.  Each holder of this Debenture, by accepting the
same, agrees that each holder of Senior Indebtedness, whether created or
acquired before or after the issuance of the Debentures, shall be deemed
conclusively to have relied on such provisions in acquiring and continuing to
hold, or in continuing to hold, such Senior Indebtedness.

            Subject to the provisions of the Indenture, at the option of the
holder hereof, this Debenture or any portion hereof may, at any time more than
six months after the date of the award of the debenture option pursuant to
which the Debenture was purchased and at or before the close of business on the
Due Date referred to on the face hereof, be converted at the principal amount
hereof, or of such portion hereof, into fully paid and nonassessable shares of
the Company's Series 1994-1 Convertible Preferred Stock (the "1994-1 Series
Stock") at the Conversion Price per share set forth on the face hereof upon
surrender of this Debenture to the Company at its office or agency in Jackson,
Mississippi, accompanied by written notice of election to convert and, if so
required by the Company, instruments of transfer in form satisfactory to the
Company, duly executed by the registered





                                       4
<PAGE>   12
holder or by his duly authorized attorney.   Fractional shares of 1992-1 Series
Stock will not be issued upon any conversion, but an amount equal to the value
of such fractional interest at the conversion price per share, will be paid in
cash to the registered holder.  Accrued interest on this Debenture through the
day immediately preceding the date of conversion will be paid as provided in
the Indenture.

            The Debentures may not be prepaid by the Company prior to the Due
Date except as provided in Sections 3.01, 3.02, and 3.04 of the Indenture or at
the election of the holder as provided in Section 3.05 of the Indenture.

            The Debentures are issuable as registered Debentures without
coupons in denominations approved by the Company, such approval to be evidenced
by the execution thereof.  In the manner and subject to the limitations
provided in the Indenture, Debentures are exchangeable, without charge except
for any tax or other governmental charge imposed in connection therewith, for
other Debentures of any other authorized denomination or denominations of an
equal aggregate principal amount at the office or agency of the Company
referred to on the face hereof.

            The Company, the Trustee, any paying agent, any conversion agent
and any Debenture registrar may deem and treat the registered holder hereof as
the absolute owner hereof (whether or not this Debenture shall be overdue and
notwithstanding any notation of ownership or other writing hereon by anyone
other than the Company or any Debenture registrar), for the purpose of
receiving payment of or on account of the principal hereof, and interest
hereon, for the conversion hereof and for all other purposes, and neither the
Company nor the Trustee nor any paying agent, conversion agent or Debenture
registrar shall be affected by any notice to the contrary.

            In case an Event of Default, as defined in the Indenture, shall
have occurred and be continuing, the principal hereof may be declared, and upon
such declaration shall become, due and payable, in the manner, with the effect
and subject to the conditions provided in the Indenture.  The Indenture
provides that in certain events such declaration and its consequences may be
waived by the holders of a majority in aggregate principal amount of the
Debentures then outstanding.

            It is also provided in the Indenture that, prior to any declaration
accelerating the maturity of the Debentures as the result of an Event of
Default, the holders of a majority in aggregate principal amount of the
Debentures at the time outstanding may on behalf of the holders of all of the
Debentures waive any past default under the Indenture and its consequences
except a default in the payment of the principal of or interest on any of the
Debentures.  Any such consent or waiver by the holder





                                       5
<PAGE>   13
of this Debenture (unless revoked as provided in the Indenture) shall be
conclusive and binding upon such holder and upon all future holders and owners
of this Debenture and any Debentures which may be issued in exchange or
substitution herefor, irrespective of whether or not any notation thereof is
made upon this Debenture or such other Debentures.

            The Indenture contains provisions permitting the Company and the
Trustee, with the consent of the holders of not less that 66-2/3% in aggregate
principal amount of the Debentures at the time outstanding, evidenced as in the
Indenture provided, to execute supplemental indentures adding any provisions to
or changing in any manner or eliminating any of the provisions of the Indenture
or of any supplemental indenture or modifying in any manner the rights of the
holders of the Debentures; provided, however, that no such supplemental
indenture shall (i) extend the fixed maturity of any Debentures, or reduce the
rate or extend the time of payment of interest thereon, or reduce the principal
amount thereof, or modify the provisions of the Indenture with respect to the
subordination of the Debentures, or impair the right to convert the Debentures
into 1994-1 Series Stock on the terms set forth in the Indenture, or change any
place of payment where or the coin or currency in which any payment may be
made, without the consent of the holder of each Debenture so affected, or (ii)
reduce the aforesaid percentage of Debentures, the holders of which are
required to consent to any such supplemental indenture, without the consent of
the holders of all Debentures then outstanding.

            No reference herein to the Indenture and no provision of this
Debenture or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay the principal of and
interest on this Debenture at the time and place and at the rate and in the
currency herein prescribed.

            No recourse for the payment of the principal of or interest on this
Debenture, or for any claim based hereon or otherwise in respect hereof, and no
recourse under or upon any obligation, covenant or agreement of the Company in
the Indenture or any indenture supplemental thereto or in any Debenture, or
because of the creation of any indebtedness represented thereby, shall be had
against any stockholder, officer or director, as such, past, present or future,
of the Company or of any successor corporation, either directly or through the
Company or any successor corporation, whether by virtue of any constitution,
statute or rule of law or by the enforcement of any assessment or penalty or
otherwise, all such liability being, by the acceptance hereof and as part of
the consideration for the issue hereof, expressly waived and released.





                                       6
<PAGE>   14
            This Debenture shall not be valid or become obligatory for any
purpose until the certificate of authentication hereon shall have been signed
by or on behalf of the Trustee.

            AND WHEREAS, the form of the Trustee's certificate of
authentication to be endorsed on the face of said Debentures shall be
substantially as follows:

                [FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION] This is one
of the Debentures described in the within mentioned Indenture.



                                         DEPOSIT GUARANTY NATIONAL BANK,
                                         as Trustee




                                         By:                                    
                                            ------------------------------------
                                                   Authorized Officer






                                       7
<PAGE>   15
            AND WHEREAS, the form of conversion notice to appear on the reverse
side of said Debenture shall be substantially as follows:

                          [FORM OF CONVERSION NOTICE]

            To First Mississippi Corporation:

      The undersigned holder of this Debenture hereby irrevocably exercises the
      option to convert this Debenture or portion hereof below designated into
      shares of 1992-1 Series Stock of First Mississippi Corporation in
      accordance with the terms of the Indenture referred to in this Debenture,
      and directs that the shares and any payment for fractions thereof
      issuable and deliverable upon the conversion be issued in the name of
      and, unless otherwise indicated, delivered to the undersigned.

Dated:      
      ---------------


- --------------------------------------------------------------------------------
          Please print name and address (including zip code number)


- --------------------------------------------------------------------------------
                          Signature of Debentureholder

                        Please Insert Social Security or
                            Other Identifying Number
                           -----------------------



                           -----------------------
                           Portion to be converted
                             (if less than all):

                              $
                               ---------------

            AND WHEREAS, all acts and things necessary to make the Debentures,
when executed by the Company and authenticated and delivered by the Trustee as
in this Indenture provided, and issued, the valid, binding and legal
obligations of the Company, and to constitute these presents a valid agreement
according to its terms, have been done and performed, and the execution of this
Indenture and the issue hereunder of the Debentures have in all respects been
duly authorized;





                                       8
<PAGE>   16
            NOW, THEREFORE, THIS INDENTURE WITNESSETH:

            That in order to declare the terms and conditions upon which the
Debentures are, and are to be, authenticated, issued and delivered, and in
consideration of the premises, of the purchase and acceptance of the Debentures
by the holders thereof and of the sum of One Dollar duly paid to it by the
Trustee at the execution of these presents, the receipt whereof is hereby
acknowledged, the Company covenants and agrees with the Trustee for the equal
and proportionate benefit of the respective holders from time to time of the
Debentures, as follows:


                                  ARTICLE ONE

                                  DEFINITIONS

            SECTION 1.01.   Definitions.   The terms defined in this Section
1.01 (except as herein otherwise expressly provided or unless the context
otherwise requires) for all purposes of this Indenture and of any indenture
supplemental hereto shall have the respective meanings specified in this
Section 1.01.  All other terms used in this Indenture which are defined in the
Trust Indenture Act of 1939 or which are by reference therein defined in the
Securities Act of 1933, as amended (except as herein otherwise expressly
provided or unless the context otherwise requires), shall have the meaning
assigned to such terms in said Trust Indenture Act and in said Securities Act
as in force at the date of the execution of this Indenture.

Authorized Newspaper:

            The term "Authorized Newspaper" shall mean a newspaper printed in
the English language, customarily published on each business day, of general
circulation in Jackson, Mississippi.

Board of Directors:

            The term "Board of Directors" shall mean the Board of Directors of
the Company or the Executive Committee, if any, of such Board or such other
committee of the Board of Directors as such Board shall designate.

Board Resolution:

            A resolution adopted by the Board of Directors as certified by an
officer of the Company.

Common Stock:

            The term "Common Stock" shall mean the class of stock designated as
Common Stock of the Company at the date of this





                                       9
<PAGE>   17
Indenture, or any other class of stock into which the Common Stock may
hereafter be changed and into which the 1994-1 Series Stock is hereafter
convertible.

Company:

            The term "Company" shall mean First Mississippi Corporation, a
Mississippi corporation, and, subject to the provisions of Article Thirteen,
shall include its successors and assigns.

Conversion Date:

            The term "Conversion Date" shall mean immediately prior to the
close of business on the date on which notice of conversion provided in Section
5.03 hereof shall have been received in proper order for conversion by the
Company and such Debenture shall have been surrendered as provided in Section
5.03 hereof.

Corporation:

            The term "corporation" shall mean any corporation, voluntary
association, joint stock association, business trust, or similar organization.

Debenture or Debentures; Outstanding:

            The term "Debenture" or "Debentures" shall mean any debenture or
debentures, as the case may be, authenticated and delivered under this
Indenture.

            The term "outstanding," when used with reference to Debentures,
shall, subject to the provisions of Section 10.04, mean, as of any particular
time, all Debentures authenticated and delivered by the Trustee under this
Indenture, except:

            (a)   Debentures theretofore canceled by the Trustee or delivered
            to the Trustee for cancellation;

            (b)   Debentures for the payment of which monies in the necessary
            amounts shall have been deposited in trust with the Trustee or with
            any paying agent (other than the Company), provided that, if such
            Debentures are to be redeemed or prepaid, notice of such redemption
            or prepayment has been duly given pursuant to this Indenture or
            provision therefor satisfactory to the Trustee has been made; and

            (c)   Debentures in lieu of or in substitution for which other
            Debentures shall have been authenticated and delivered pursuant to
            this Indenture.





                                       10
<PAGE>   18
Debentureholder:

            The term "Debentureholder," "holder of Debentures," or other
similar terms, shall mean any person in whose name a particular Debenture shall
be registered on the books of the Company kept for that purpose in accordance
with the terms hereof.

Due Date:

            The term "Due Date" shall mean November 13, 2004.

Event of Default:

            The term "Event of Default" shall mean any event specified in
Section 8.01, continued for the period of time, if any, therein designated.

Indenture:

            The term "Indenture" shall mean this instrument as originally
executed or, if amended or supplemented as herein provided, as so amended or
supplemented.

Interest Payment Date:

            The term "Interest Payment Date" shall mean January 1 and July 1 of
each year, commencing on July 1, 1995.

Interest Rate:

            The term "Interest Rate" shall mean a percentage equal to 1% less
than the Prime Interest Rate.

Issuance Date:

            The term "Issuance Date" shall mean the date as of which a
Debenture is issued to a Debentureholder.

Officers' Certificate:

            The term "Officers' Certificate," when used with respect to the
Company, shall mean a certificate signed by the Chairman of the Board of
Directors or the President or any Vice President and by the Treasurer or any
Assistant Treasurer or the Secretary or any Assistant Secretary of the Company.
Each such certificate shall include the statements provided for in Section
16.06 if and to the extent required by the provisions of such Section.

Opinion of Counsel:

            The term "Opinion of Counsel" shall mean an opinion in writing,
signed by legal counsel who shall be satisfactory to the





                                       11
<PAGE>   19
Trustee and who may be an employee of, or of counsel to, the Company.  Each
such opinion shall include the statements provided for in Section 16.06 if and
to the extent required by the provisions of such Section.


Prime Interest Rate:

            The term "Prime Interest Rate" shall mean the rate of interest per
annum publicly announced from time to time as its prime rate by Deposit
Guaranty National Bank in Jackson, Mississippi, or, if such bank shall have
ceased to publish a "prime rate," the term shall mean such other rate of
interest per annum which such bank shall certify to the Company and the Trustee
in writing is the interest rate per annum charged by such bank which is most
closely equivalent to such "prime rate."


Principal Office of the Trustee:

            The term "principal office of the Trustee," or other similar term,
shall mean the principal office of the Trustee in Jackson, Mississippi, at
which at any particular time its corporate trust business shall be
administered.


Record Date:

            The term "Record Date" shall mean the Record Date specified or
determined as provided in Section 2.03 of this Indenture.

Responsible Officer:

            The term "Responsible Officer," when used with respect to the
Trustee, shall mean the Chairman or Vice-Chairman of the Board of Directors or
Trustees, the Chairman or Vice-Chairman of the Executive Committee of the Board
of Directors or Trustees, the President, the Chairman of the Trust Committee,
any Vice President, the Secretary, the Treasurer, any Trust Officer, any
Assistant Vice President, or any other officer or assistant officer of the
Trustee customarily performing functions similar to those performed by the
persons who at the time shall be such officers, respectively, or to whom any
corporate trust matter is referred because of his knowledge of and familiarity
with the particular subject.  The term "Responsible Officer," when used with
respect to the Company, shall mean the Chairman of the Board of Directors, the
President, any Vice President, the Treasurer, the Secretary, any Assistant
Treasurer or any Assistant Secretary of the Company.





                                       12
<PAGE>   20
Senior Indebtedness:

            The term "Senior Indebtedness" shall mean all indebtedness for
borrowed money (whether or not secured), heretofore or hereafter incurred by
the Company (or heretofore or hereafter incurred by another person, including
but not limited to a Subsidiary, and the repayment of which is guaranteed by
the Company or which the Company is contingently obligated to repay, purchase,
or otherwise acquire), unless the terms of this instrument evidencing such
indebtedness specifically provide that such indebtedness is not superior in
right of payment to the Debentures, and any deferrals, renewals or extensions
of any such indebtedness; provided, however, that the term "indebtedness for
borrowed money" shall not include indebtedness representing money borrowed by
the Company from a Subsidiary; and provided, further, that the term "Senior
Indebtedness" shall not include the Company's 1984-A Series Convertible
Subordinated Debentures, its 1985-A Series Convertible Subordinated Debentures,
its 1982-A Series Convertible Subordinated Debentures, its 1982-B Series
Convertible Subordinated Debentures, its 1982-C Series Convertible Subordinated
Debentures, its 1982-D Series Convertible Subordinated Debentures, its 1983-A
Series Convertible Subordinated Debentures, its 1984-B Series Convertible
Subordinated Debentures, its 1986-A Series Convertible Subordinated Debentures,
its 1987-A Series Convertible Subordinated Debentures, its 1988-A Series
Convertible Subordinated Debentures, its 1988-1 Series Convertible Subordinated
Debentures, its 1989-A Series Convertible Subordinated Debentures, its 1989-1
Series Convertible Subordinated Debentures, its 1989-2 Series Convertible
Subordinated Debentures, its 1990-1 Series Convertible Subordinated Debentures,
its 1990-2 Series Convertible Subordinated Debentures, its 1991-1 Series
Convertible Subordinated Debentures, its 1991-2 Series Convertible Subordinated
Debentures, or its 1992-1 Series Convertible Subordinated Debentures.

1994-1 Series Stock:

            The term "1994-1 Series Stock" shall mean the series of the
Company's preferred stock designated "1994-1 Series Convertible Preferred
Stock," authorized at the date of execution of this Indenture, or any other
class of stock resulting from successive changes or reclassifications of the
1994-1 Series Stock.  The 1994-1 Series Stock is convertible into the Common
Stock of the Company.

Subsidiary or Subsidiaries:

            The term "Subsidiary" shall mean a corporation of which more than
fifty percent of the issued and outstanding stock entitled to vote for the
election of directors (otherwise than by





                                       13
<PAGE>   21
reason of default in dividends) is at the time owned or controlled, directly or
indirectly, by the Company.



Trustee:

            The term "Trustee" shall mean Deposit Guaranty National Bank, a
national banking association organized under the laws of the United States and,
subject to the provisions of Article Nine hereof, shall also include its
successors and assigns as Trustee hereunder.

Trust Indenture Act of 1939:

            The term "Trust Indenture Act of 1939" shall mean the Trust
Indenture Act of 1939 as it was in force at the date of execution of this
Indenture and, with respect to each supplemental indenture hereto, as it was in
force at the date of execution of such supplemental indenture.


                                  ARTICLE TWO

                ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND
                             EXCHANGE OF DEBENTURES


            SECTION 2.01.  Designation, Amount and Issue of Debentures.  The
Debentures shall be designated as 1994-1 Series Convertible Subordinated
Debentures.  Debentures in the aggregate principal amount of $21,312.50 upon
the execution of this Indenture, or from time to time thereafter, may be
executed by the Company and delivered to the Trustee for authentication, and
the Trustee shall thereupon authenticate and deliver said Debentures to or upon
the written order of the Company, signed by its Chairman of the Board,
President or any Vice President and its Treasurer, Assistant Treasurer,
Secretary or Assistant Secretary, without any further action by the Company
hereunder.

            Interest on the unpaid principal amount of each Debenture shall be
due and payable on each Interest Payment Date after the Issuance Date of such
Debenture on an annualized basis at the Interest Rate in effect from time to
time during the period or any part thereof as to which interest is payable on
such Interest Payment Date.   As soon as practicable after each Interest
Payment Date occurring on or after the date of original issuance, the Company
shall deliver an Officers' Certificate to the Trustee setting forth the
Interest Rate or Interest Rates applicable to the interest payment period
ending on such Interest Payment Date.  As soon as practicable after each
Interest Payment Date the Company will mail to the Debentureholders at their





                                       14
<PAGE>   22
addresses appearing on the Debenture register notice indicating the Interest
Rate or Interest Rates applicable to the interest payment period ending on such
Interest Payment Date.  Interest shall be calculated on the basis of a 365 day
year.

            Notwithstanding the foregoing, in no event will interest be payable
on a Debenture to the extent it is in excess of the maximum allowable interest
rate under applicable law.  If the interest payable to any holder or holders of
Debentures is to be calculated at a rate lower than the Interest Rate, the
Company shall promptly deliver to the Trustee an Officers' Certificate
certifying to the lower rate and an Opinion of Counsel that such interest rate
is the maximum allowable interest rate under applicable law.

            Except as provided in Section 2.06, the aggregate principal amount
of Debentures authorized by this Indenture is limited to the amount set forth
in Section 2.01.

            Principal of and interest on the Debentures shall be payable in
such coin or currency of the United States of America as at the time of payment
shall be legal tender for the payment of public and private debts.

            SECTION 2.02.  Form of Debentures.  The Debentures and the
certificate of authentication to be borne by the Debentures shall be
substantially of the tenor and purport as in this Indenture above recited.  Any
of the Debentures may have imprinted thereon such legends or endorsements as
the Board of Directors of the Company may deem appropriate and as are not
inconsistent with the provisions of this Indenture, or as may be required to
comply with any law or with any rule or regulation, or to conform to usage.

            SECTION 2.03.  Denomination and Date of Debentures.  The Debentures
shall be issuable only as registered Debentures without coupons in such
denominations as the Company shall approve, such approval to be evidenced by
the execution thereof, and shall be numbered, lettered, or otherwise
distinguished in such manner as the Company may deem appropriate and as is not
inconsistent with the provisions of this Indenture, or as may be required to
comply with any law or with any rule or regulation, or to conform to usage.

            Every Debenture shall be dated the date of its authentication and
shall bear interest from the Issuance Date or from the last Interest Payment
Date to which interest has been paid.

            The interest installment on any Debenture which is payable on any
Interest Payment date shall be paid to the person in whose name said Debenture
(or any Debenture or Debentures





                                       15
<PAGE>   23
evidencing the same debt) is registered at the close of business on the Record
Date for such interest installment at the address appearing on the Debenture
register or to such other address as that person shall have notified the
Company and the Debenture registrar in writing prior to such Record Date,
except if and to the extent the Company shall default in the payment of the
interest due on such Interest Payment Date, in which case such defaulted
interest shall be paid to the persons in whose names outstanding Debentures are
registered at the close of business on the business day next preceding the date
of payment or at the option of the Company on a subsequent record date (which
shall not be less than five business days preceding the date of payment of
defaulted interest) established for such purpose by notice given by mail by or
on behalf of the Company to the holders of the Debentures not less than fifteen
days preceding such subsequent record date, provided that in the case of any
defaulted interest on a Debenture converted subsequent to a Record Date,
interest shall be paid to the registered holder of the converted Debenture on
the date immediately prior to the Conversion Date.  The term "Record Date" as
used in this Indenture with respect to any Interest Payment Date shall mean the
day (whether or not a business day) next preceding such Interest Payment Date.

            SECTION 2.04.  Execution of Debentures.  The Debentures shall be
signed (manually or in facsimile) in the name and on behalf of the Company by
its Chairman of the Board, President or one of its Vice Presidents under its
corporate seal (which may be printed, engraved or otherwise reproduced thereon,
by facsimile or otherwise) attested by the manual or facsimile signature of its
Secretary or one of its Assistant Secretaries.  Only such Debentures as shall
bear thereon a certificate of authentication substantially in the form
hereinbefore recited, executed by manual signature by the Trustee, shall be
entitled to the benefits of this Indenture or be valid or obligatory for any
purpose.  Such certificate upon any Debenture executed by the Company shall be
conclusive evidence that the Debenture so authenticated has been duly
authenticated and delivered hereunder and that the holder is entitled to the
benefits of this Indenture.

            In case any officer of the Company who shall have signed any of the
Debentures shall cease to be such officer before the Debentures so signed shall
have been authenticated and delivered, or disposed of by the Company, such
Debentures nevertheless may be authenticated and delivered or disposed of as
though the person who signed such Debentures had not ceased to be such officer
of the Company; and any Debenture may be signed on behalf of the Company by
such persons as, at the actual date of the execution of such Debenture, shall
be the proper officers of the Company, although at the date of the execution of
this Indenture any such person was not as officer.





                                       16
<PAGE>   24
            At any time and from time to time after the execution and delivery
of this Indenture, the Company may deliver Debentures executed by the Company
to the Trustee for authentication; and the Trustee shall authenticate and
deliver such Debentures as in this Indenture provided and not otherwise.

            SECTION 2.05.  Registration, Registration of Transfer and Exchange
of Debentures.  The Company will keep at the office or agency to be maintained
by the Company as provided in Section 6.02 a register or registers, in which,
subject to such reasonable regulations as it may prescribe, it will register
Debentures and any permitted transfers of Debentures.  The Company shall serve
as its own Debenture registrar until such time as another registrar may be
appointed.

            Upon surrender for registration of any permitted transfer of any
Debenture at any such office or agency, the Company shall execute and the
Trustee shall authenticate and deliver in the name of the transferee or
transferees a new Debenture or Debentures for a like aggregate principal amount
of authorized denominations.

            Debentures may be exchanged for a like aggregate principal amount
of other authorized denominations.  Debentures to be exchanged shall be
surrendered for that purpose at any office or agency to be maintained for such
purpose by the Company as provided in Section 6.02, and the Company shall
execute and the Trustee shall authenticate and deliver in exchange therefor the
Debenture or Debentures which the Debentureholder making the exchange shall be
entitled to receive, bearing serial numbers not contemporaneously outstanding.

            All Debentures presented for registration of transfer, exchange,
redemption or payment shall (if so required by the Company or the Trustee) be
duly endorsed by, or be accompanied by instruments of transfer in form
satisfactory to the Company and to the Trustee duly executed by, the registered
holder or his duly authorized attorney.

            Any registration of transfer or exchange shall be without charge,
except that the Company may require payment of a sum sufficient to cover any
tax or other governmental charge that may be imposed in relation thereto.

            The Company shall not be required to register the transfer of any
Debenture not made in accordance with Section 10.06 hereof.

            SECTION 2.06.  Mutilated, Destroyed, Lost or Stolen Debentures.  In
case any temporary or definitive Debenture shall become mutilated or be
destroyed, lost or stolen, the Company in its discretion may execute, and upon
its request the Trustee shall





                                       17
<PAGE>   25
authenticate and deliver, a new Debenture, bearing a serial number not
contemporaneously outstanding, in exchange and substitution for the mutilated
Debenture or in lieu of and substitution for the Debenture so destroyed, lost
or stolen.  In every case, the applicant for a substituted Debenture shall
furnish to the Company and to the Trustee such security or indemnity as may be
required by them to save each of them harmless, and, in every case of
destruction, loss or theft, the applicant shall also furnish to the Company and
to the Trustee evidence to their satisfaction of the destruction, loss or theft
of such Debenture and of the ownership thereof.

            The Trustee shall authenticate any such substituted Debenture and
deliver the same upon the written request or authorization of any Responsible
Officer of the Company.  Upon the issuance of any substituted Debenture, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses connected therewith.  In case any Debenture which has matured or is
about to mature shall have become mutilated or be destroyed, lost or stolen,
the Company may, instead of issuing a substitute Debenture, pay or authorize
the payment of the same (without surrender thereof except in the case of a
mutilated Debenture) if the applicant for such payment shall furnish the
Company, the Trustee and any paying agent with such security or indemnity as
they may require to save each of them harmless and, in case of destruction,
loss or theft, evidence to the satisfaction of the Company and the Trustee of
the destruction, loss or theft of such Debenture and of the ownership thereof.

            Every substituted Debenture issued pursuant to the provisions of
this Section 2.06 by virtue of the fact that any Debenture is destroyed, lost
or stolen shall constitute an additional contractual obligation of the Company,
whether or not the destroyed, lost or stolen Debenture shall be found at any
time, and shall be entitled to all the benefits of this Indenture equally and
proportionately with any and all other Debentures duly issued hereunder.  All
debentures shall be held and owned upon the express condition that the
foregoing provisions are exclusive with respect to the replacement or payment
of mutilated, destroyed, lost or stolen Debentures and shall preclude (to the
extent lawful) any and all other rights or remedies with respect to the
replacement or payment of mutilated, destroyed, lost or stolen Debentures.


            SECTION 2.07.  Temporary Debentures.  Pending the preparation of
definitive Debentures, the Company may execute and the Trustee shall
authenticate and deliver temporary Debentures.  Temporary Debentures shall be
issuable in any authorized denomination, and substantially in the form of the
definitive Debentures but with such omissions, insertions and variations as





                                       18
<PAGE>   26
may be appropriate for temporary Debentures, all as may be determined by the
officers of the Company, as evidenced by their execution thereof.  Every such
temporary Debenture shall be authenticated by the Trustee upon the same
conditions and in substantially the same manner, and with the same effect, as
the definitive Debentures.  Without unreasonable delay, the Company will
execute and deliver to the Trustee definitive Debentures and thereupon any or
all temporary Debentures may be surrendered in exchange therefor, at the
principal office of the Trustee, and the Trustee shall authenticate and deliver
in exchange for such temporary Debentures an equal aggregate principal amount
of definitive Debentures.  Such exchange shall be made by the Company at its
own expense and without any charge therefor except that the Company may require
payment of a sum sufficient to cover any transfer tax or similar governmental
charge that may be imposed in relation thereto.  Until so exchanged, the
temporary Debenture shall in all respects be entitled to the same benefits
under this Indenture as definitive Debentures authenticated and delivered
hereunder.


            SECTION 2.08.  Cancellation of Debentures.  All Debentures
surrendered for the purpose of payment, conversion, exchange or registration of
transfer may, if surrendered to the Company or any paying or conversion agent,
be delivered to the Trustee for cancellation or, if surrendered to the Trustee,
shall be canceled by it, and no Debentures shall be issued in lieu thereof
except as expressly permitted by any of the provisions of this Indenture.   The
Trustee shall, upon request of the Company, either deliver canceled Debentures
or a certificate of destruction thereof to the Company.


            SECTION 2.09.  Benefits of Indenture Provisions.  Nothing in this
Indenture or in the Debentures, expressed or implied, shall give or be
construed to give any person, firm or corporation, other then the parties
hereto and any paying agent, any conversion agent and the holders of Debentures
and, to the extent provided in Article Four, the holders of Senior
Indebtedness, any legal or equitable right, remedy or claim under or in respect
of this Indenture, or under any covenant, condition or provision herein
contained; all the covenants, conditions and provisions contained in this
Indenture or in the Debentures being for the sole benefit of the parties hereto
and any paying agent, any conversion agent and the holders of the Debentures
and, to the extent provided in Article Four, the holders of Senior
Indebtedness.


            SECTION 2.10.  Maintenance of Office or Agency by Trustee.  The
Trustee will maintain an office or agency in Jackson, Mississippi where
Debentures may be presented or





                                       19
<PAGE>   27
surrendered for payment of principal and interest or conversion and where
notices and demands to or upon the Company in respect of the Debentures or of
this Indenture may be served, which shall initially be located at One Deposit
Guaranty Plaza, Jackson, Mississippi 39205.

            SECTION 2.11.  Condition to Issuance of Debentures.  The issuance
of any Debenture hereunder upon exercise of a Debenture Option issued pursuant
to the Company's 1988 Long Term Incentive Plan shall be conditioned upon the
execution by the person who receives such Debenture of a written agreement
agreeing that any of the Company's Convertible Preferred Stock issuable upon
conversion of the Debenture shall not be transferable other than by will or the
laws of descent and distribution or pursuant to a qualified domestic relations
order as defined by the Internal Revenue Code of 1986, as amended, or Title I
of the Employee Retirement Income Security Act, or the rules thereunder.  Such
agreement may specifically provide that the designation of a beneficiary shall
not constitute a prohibited transfer.

                                 ARTICLE THREE

                    PREPAYMENT AND REDEMPTION OF DEBENTURES

            SECTION 3.01.  Mandatory and Optional Prepayment of Debentures.

            (a)  Upon termination of the conversion privilege of a particular
            Debenture pursuant to Section 5.02(a) hereof, the Company may at
            its sole option prepay such Debenture at any time thereafter, if
            the Company mails notice of prepayment not less than 30 nor more
            than 60 days prior to the date fixed for such prepayment to the
            Debentureholder at his last registered address, and the Trustee.
            Any Debenture which is prepaid pursuant to this Section 3.01(a)
            shall cease to bear interest from the date fixed for prepayment.
            Notice of prepayment pursuant to this Section 3.01(a) shall state
            (i) the prepayment date, (ii) the prepayment price, (iii) that the
            Debentures must be surrendered to the paying agent for payment and
            (iv) that interest on the Debentures ceases to accrue on and after
            the prepayment date.

            (b)  Installments of interest which mature on or prior to the
            prepayment date shall be payable to the holders of such Debentures
            registered as such on the relevant Record Dates according to their
            terms and to the provisions of Section 2.03 hereof.

            SECTION 3.02.  Redemption of Debentures.  Providing all other
debentures issued under the Plan are called on an Interest Payment Date the
Debentures are redeemable at the Company's





                                       20
<PAGE>   28
option, on that same Interest Payment Date, in whole or in part, upon mailing a
notice of redemption not less than 12 months prior to the date fixed for such
redemption to the holder or holders of the Debentures to be redeemed at such
holder's or holders' last registered addresses.

            Each Debenture is redeemable at a redemption price of 100% of the
principal amount thereof, together with accrued interest to the date fixed for
redemption.  Installments of interest which mature on or prior to the
redemption date shall be payable to the holders of such Debentures registered
as such on the relevant Record Dates according to their terms and to the
provisions of Section 2.03 hereof.  The Debentureholder may convert its
Debenture at any time prior to and on the redemption date, subject to the
limitations on conversion privileges set forth in other provisions of this
Indenture.

            At least 12 months but not more than 18 months before a redemption
date, the Company shall mail a notice of redemption by first-class mail to each
holder of the Debentures to be redeemed and to the Trustee.  The notice shall
state (i) the redemption date, (ii) the redemption price, (iii) if less than
all outstanding Debentures are to be redeemed, the identification (and, in the
case of partial redemption, the respective principal amounts) of the Debentures
to be redeemed, (iv) that the Debentures called for redemption may be converted
at any time prior to and on the redemption date, (v) the conditions
prerequisite to conversion of Debentures, (vi) that Debentures called for
redemption must be surrendered to the paying agent to collect the redemption
price, and (vii) that interest on the Debentures ceases to accrue on and after
the redemption date.  At the Company's request, the Trustee shall give notice
of redemption in the Company's name and at its expense.

            Subject to the provisions of Section 3.01 hereof, once notice of
redemption is mailed, the Debentures called for redemption become due and
payable on the redemption date and at the redemption price, and upon surrender
to the paying agent, such Debentures shall be paid at the redemption price,
plus accrued interest to the redemption date.

            SECTION 3.03.  Deposit of Monies for Redemption or Prepayment.
Prior to any redemption or prepayment date, the Company shall deposit with the
paying agent money sufficient to pay the redemption or prepayment price of and
accrued interest on all Debentures to be redeemed or prepaid.  The paying agent
shall return to the Company any money not required for that purpose because of
conversion of Debentures.

            If any Debenture called for redemption or prepayment shall not be
so paid upon surrender thereof for redemption or prepayment, the principal
shall, until paid, bear interest from





                                       21
<PAGE>   29
the redemption or prepayment date at the Interest Rate borne by the Debenture.

            SECTION 3.04.  Limitation on Prepayment.  Except as provided in
Sections 3.01 and 3.02 hereof, no Debenture may be prepaid or redeemed by the
Company prior to the Due Date without the written consent of the holder
thereof.

            SECTION 3.05.  Holder's Right to Elect Redemption.  Commencing on
the first Interest Payment Date occurring more than one year after the Issuance
Date of any Debenture, the holder of such Debenture or such holder's legal
successor may elect to have the Company redeem the Debenture on any Interest
Payment Date, by surrender of the Debenture to the Company at least 10 days
prior to such Interest Payment Date at the office of the Company, or at an
office or agency established for such purpose, duly endorsed or accompanied by
a written instrument of transfer in form satisfactory to the Company and
accompanied by a written notice of election to receive payment of the
Debenture.  The amount of such payment shall be equal to the unpaid principal
portion of the Debenture plus accrued but unpaid interest on the Debenture
through the Interest Payment date.  The Company shall hand deliver or mail by
first class mail to the Debentureholder a check on the Interest Payment Date in
payment of the amount due in redemption of the Debenture.


                                  ARTICLE FOUR

                          SUBORDINATION OF DEBENTURES

            SECTION 4.01.  Agreement That Debentures Be Subordinate.  The
Company covenants and agrees, and each holder of a Debenture issued hereunder
by his acceptance thereof likewise covenants and agrees, that all Debentures
issued hereunder shall be issued subject to the provisions of this Article
Four; and each person holding any Debenture, whether upon original issue or
upon transfer or assignment thereof, accepts and agrees to be bound by such
provisions.

            SECTION 4.02.  Subordination to Senior Indebtedness.  Anything in
this Indenture or in any Debenture to the contrary notwithstanding, the
indebtedness evidenced by each Debenture shall be subordinate and junior, to
the extent and in the manner hereinafter set forth, to all Senior Indebtedness:

            (a)  In the event of any insolvency or bankruptcy proceedings, and
            any receivership, liquidation, reorganization or other similar
            proceedings in connection therewith, relative to the Company or to
            its creditors, as such, or to its property, and in the event of any
            proceedings for voluntary liquidation,





                                       22
<PAGE>   30
            dissolution, or other winding-up of the Company, whether or not
            involving insolvency or bankruptcy, then the holders of Senior
            Indebtedness shall be entitled to receive payment is full of all
            principal of and interest on all Senior Indebtedness, or to have
            provision made for such payment, before the holders of the
            Debentures are entitled to receive any payment on account of
            principal of or interest on the Debentures, and to that end (but
            subject to the power of a court of competent jurisdiction to make
            other equitable provisions reflecting the rights conferred by these
            subordination provisions upon the Senior Indebtedness and the
            holders thereof with respect to the subordinated indebtedness
            represented by the Debentures and the holders thereof by a lawful
            plan of reorganization under applicable bankruptcy law) the holders
            of Senior Indebtedness shall be entitled to receive for application
            in payment thereof any payment or distribution of any kind or
            character, whether in cash or property or securities, which may be
            payable or deliverable in any such proceedings in respect of the
            Debentures, except securities which are subordinate and junior in
            right or payment to the payment of all Senior Indebtedness then
            outstanding;

            (b)  If any Senior Indebtedness matures by lapse of time,
            acceleration or otherwise, and is not immediately paid, refunded or
            replaced by new indebtedness, then all principal of, (and premium,
            if any) and interest on all such matured Senior Indebtedness shall
            first be paid in full, or such payment shall be duly provided for,
            before any payment on account of principal or interest is made
            upon, or acquisition is made of any of, the Debentures;

            (c)  Each Debentureholder, by his acceptance of a Debenture issued
            hereunder (i) irrevocably authorizes and empowers (without imposing
            any obligation on) each holder of Senior Indebtedness (hereinafter
            in this clause (c) called a "Senior Holder") at the time
            outstanding and such Senior Holder's representatives to demand, sue
            for, collect, receive and receipt for such Debentureholder's
            ratable share of all payments and distributions in respect of the
            Debentures which are required to be paid or delivered to the Senior
            Holders as provided in clause (a) above, and to file and prove all
            claims therefor and take all such other action (including the right
            to vote such Debentureholder's ratable share of the Debentures) in
            the name of such Debentureholder or otherwise, as such Senior
            Holder or such Senior Holder's representatives may determine to be
            necessary or appropriate for the enforcement of clause (a) above,
            provided, however, that no action may be





                                       23
<PAGE>   31
            taken by any Senior Holder or such Senior Holder's representatives
            pursuant to the authorization conferred by this item (i) of this
            clause (c) unless written notice shall have been given by such
            Senior Holder or such Senior Holder's representatives to a
            Debentureholder requesting such Debentureholder to take such action
            and such Debentureholder shall not have taken such action within 15
            days after the giving of such notice; and (ii) agrees to execute
            and deliver to each Senior Holder and such Senior Holder's
            representatives all such further instruments confirming the above
            authorization, and all such powers of attorney, proofs of claim,
            assignments of claim and other instruments, and to take all such
            other action as may be requested by such Senior Holder or such
            Senior Holder's representatives in order to enable such Senior
            Holder to enforce all claims upon or in respect of such
            Debentureholder's ratable share of the Debentures.

Notwithstanding any of the foregoing clauses (a) through (c) of this Section
4.02, nothing herein shall prevent the Company from prepaying any Debenture
prior to the Due Date under circumstances when the provisions of clause (a) or
clause (b) of this Section 4.02 shall not be applicable.

            SECTION 4.03.  Payment to Holders of Senior Indebtedness of Certain
Amounts Received by Debentureholders.  In the event that, notwithstanding the
provisions of Section 4.02 prohibiting such distribution or payment, any
distribution of assets of the Company or payment by or on behalf of the Company
of any kind or character, whether in cash, property or securities, to which the
holders of the Debentures or the Trustee would be entitled but for the
provisions of this Article Four prohibiting such distribution or payment, shall
be received by the Trustee or the holders of the Debentures before the
principal of and interest on all Senior Indebtedness is paid in full, or
provision is made for its payment, such distribution or payment shall be held
in trust for the benefit of, and shall be paid over or delivered to, the
holders of such Senior Indebtedness or their representative or representatives,
or to the trustee or trustees under any indenture pursuant to which any
instruments evidencing any of such Senior Indebtedness may have been issued,
ratably according to the aggregate amounts remaining unpaid on account of the
Senior Indebtedness held or represented by each, for application to the payment
of all Senior Indebtedness remaining unpaid to the extent necessary to pay the
principal of and interest on all such Senior Indebtedness in full, after giving
effect to any concurrent distribution or payment, or provision therefor, from
any source, to the holders of such Senior Indebtedness or their representatives
or trustees.





                                       24
<PAGE>   32
            SECTION 4.04.  Notice to Trustee of Specified Events; Reliance on
Certificate of Liquidating Agent.  The Company shall give prompt written notice
to the Trustee of any insolvency or bankruptcy proceeding in respect of the
Company and of any proceedings for voluntary liquidation, dissolution or other
winding up of the Company (whether or not involving insolvency or bankruptcy),
within the meaning of Section 4.02(a), and of any event which pursuant to
Section 4.02(b) would prevent payment by the Company on account of the
principal of or interest on the Debenture.  The Trustee, subject to the
provisions of Section 9.01, shall be entitled to assume that no such event has
occurred unless the Company, or a holder of Senior Indebtedness, or any trustee
or representative therefor, has given such notice.  The Trustee shall not be
charged with knowledge of the curing of any event or of the elimination of the
act or condition preventing any payment by the Company unless and until the
Trustee shall have received an Officers' Certificate to such effect; and the
Company shall deliver such an Officers' Certificate promptly after the curing
of any such default or the elimination of any such act or condition.

            Upon any distribution of assets of the Company or payment by or on
behalf of the Company referred to in this Article Four, the Trustee and the
holders of the Debentures shall be entitled to rely upon any order or decree of
a court of competent jurisdiction in which any proceedings of the nature
referred to in Section 4.02(a) are pending, and the Trustee, subject to the
provisions of Section 9.01 hereof, and the holders of the Debentures shall be
entitled to rely upon a certificate of the liquidating trustee or agent or
other person making any distribution to the Trustee or to the holders of the
Debentures for the purpose of ascertaining the persons entitled to participate
in such distribution, the holders of the Senior Indebtedness and other
indebtedness of the Company, the amount thereof or payable thereon, the amount
or amounts paid or distributed thereon and all other facts pertinent thereto or
to this Article Four.  In the event that the Trustee determines, in good faith,
that further evidence is required with respect to the right of any person as a
holder of Senior Indebtedness to participate in any payment or distribution
pursuant to this Article Four, the Trustee may request such person to furnish
evidence to the reasonable satisfaction of the Trustee as to the amount of
Senior Indebtedness held by such person, as to the extent to which such person
is entitled to participate in such payment or distribution, and as to other
facts pertinent to the rights of such person under this Article Four, and if
such evidence is not furnished, the Trustee may defer any payment to such
person pending judicial determination as to the right of such person to receive
such payment.

            The Trustee, however, shall not be deemed to owe any fiduciary duty
to the holders of Senior Indebtedness but shall





                                       25
<PAGE>   33
have only such obligations to such holders as are expressly set forth in this
Article Four.

            SECTION 4.05.  Subrogation.  Subject to the payment in full of the
principal of and interest on all Senior Indebtedness, the holders of the
Debentures (together with the holders of any other indebtedness of the Company
which is subordinate in right of payment to the payment of other indebtedness
of the Company, but is not subordinate in right of payment to the Debentures
and by its terms grants such right of subrogation to the holders thereof) shall
be subrogated to the rights of the holders of Senior Indebtedness to receive
distributions of assets of the Company, or payments by or on behalf of the
Company, made on the Senior Indebtedness, until the principal of and interest
on the Debentures shall be paid in full; and, for the purpose of such
subrogation, no distributions or payments to the holders of Senior Indebtedness
of any cash, property or securities to which the holders of the Debentures or
the Trustee would be entitled except for the provisions of this Article Four,
and no payment over pursuant to the provisions of this Article Four to the
holders of Senior Indebtedness by the holders of the Debentures or the Trustee
shall, as between the Company, its creditors other than the holders of Senior
Indebtedness and the holders of Debentures, be deemed to be a payment by the
Company to or on account of Senior Indebtedness, it being understood that the
provisions of this Article Four are, and are intended, solely for the purpose
of defining the relative rights of the holders of the Debentures, on the one
hand, and the holders of Senior Indebtedness, on the other hand.

            SECTION 4.06.  Obligation to Pay Not Impaired.  Nothing contained
in this Article Four or elsewhere in this Indenture, or in the Debentures, is
intended to or shall alter or impair, as between the Company, its creditors
other than the holders of Senior Indebtedness, and the holders of the
Debentures, the obligation of the Company, which is absolute and unconditional,
to pay to the holders of the Debentures the principal of and interest on the
Debentures at the time and place and at the rate and in the currency therein
prescribed, or to affect the relative rights of the holders of the Debentures
and creditors of the Company other than the holders of Senior Indebtedness, nor
shall anything herein or therein prevent the Trustee or the holder of any
Debenture from exercising all remedies otherwise permitted by applicable law
upon default under this Indenture, subject to the rights, if any, under this
Article Four of the holders of Senior Indebtedness to receive cash, property or
securities otherwise payable or deliverable to the holders of the Debentures.

            SECTION 4.07.  Reliance by Senior Indebtedness on Subordination
Provisions.  Each holder of any Debenture by his acceptance thereof
acknowledges and agrees that the foregoing subordination provisions are, and
are intended to be, an





                                       26
<PAGE>   34
inducement and a consideration to each holder of any Senior Indebtedness,
whether such Senior Indebtedness was created or acquired before or after the
issuance of the Debentures, to acquire and continue to hold, or to continue to
hold, such Senior Indebtedness, and such holder of Senior Indebtedness shall be
deemed conclusively to have relied on such subordination provisions in
acquiring and continuing to hold, or in continuing to hold, such Senior
Indebtedness.

            SECTION 4.08.  Certain Payments and Credits Permitted.  Nothing
contained in this Article Four or elsewhere in this Indenture, or in any of the
Debentures, shall (a) affect the right of the Company to make or prevent the
Company from making payment of the principal of or interest on the Debentures,
or from depositing with the Trustee or any paying agent monies for such
payments, not then contrary to the conditions described in Section 4.02, (b)
prevent the application by the Trustee or any paying agent of any monies so
deposited with it under this Indenture to the payment of or on account of the
principal of or interest on the Debentures unless the Trustee has knowledge of
a default on the Senior Indebtedness, or (c) prevent the retention by the
holders of Debentures of monies so applied and paid to them on account of the
principal of or interest on the Debentures, whether or not at the time of such
application described in (b) or payment described in (c) payment of principal
of or interest on the Debentures would then be precluded pursuant to Section
4.02.

            SECTION 4.09.  Subordination Not to be Prejudiced by Certain Acts.
No right of any present or future holder of any Senior Indebtedness of the
Company to enforce subordination as herein provided shall at any time in any
way be prejudiced or impaired by any act or failure to act on the part of the
Company or by any act or failure to act by any such holder, or by any
noncompliance by the Company with the terms, provisions and covenants of this
Indenture, regardless of any knowledge thereof any such holder may have or be
otherwise charged with.

            SECTION 4.10.  Trustee Authorized to Effectuate Subordination.
Each holder of Debentures by his acceptance thereof authorizes and directs the
Trustee on his behalf to take such action as may be necessary or appropriate to
acknowledge or effectuate the subordination as provided in this Article Four
and appoints the Trustee his attorney-in-fact for any and all such purposes.

            SECTION 4.11.  Trustee's Rights Regarding Senior Indebtedness
Held By It, Etc.  The Trustee shall be entitled to all the rights set forth in
this Article Four in respect of any Senior Indebtedness at any time held by it,
to the same extent as any other holder of Senior Indebtedness, and nothing in
Section 9.13 or elsewhere in this Indenture shall deprive the Trustee of any of
its rights as such holder.  Nothing in this Article Four





                                       27
<PAGE>   35
shall apply to claims of, or payments to, the Trustee under or pursuant to
Section 9.06 of this Indenture.

            SECTION 4.12.  Trustee and Paying Agents Not Chargeable with
Knowledge Until Notice.  Notwithstanding any of the provisions of this Article
Four or any other provision of this Indenture, the Trustee and any paying agent
shall not at any time be charged with knowledge of the existence of any facts
which would prohibit the making of any payment of monies to or by the Trustee
or any paying agent, unless and until the Trustee or such paying agent, as the
case may be, shall have received written notice thereof from the Company or a
holder of Senior Indebtedness, or any trustee therefor; and, prior to the
receipt of any such written notice, the Trustee, subject to the provisions of
Section 9.01, and any paying agent shall be entitled to assume that no such
facts exist.  If at lease twenty-four hours prior to the date upon which by the
terms hereof any such monies may become payable for any purpose (including,
without limitations, the payment of either the principal of or the interest on
any Debenture) the Trustee or paying agent, as the case may be, shall not have
received with respect to such monies the notice provided for in this Section
4.12, then, anything herein contained to the contrary notwithstanding, the
Trustee shall have full power and authority to receive such monies and to apply
the same to the purpose for which they were received and shall not be affected
by any notice to the contrary which may be received by it on or after the
commencement of such twenty-four hour period.

            SECTION 4.13.  1984-A, 1985-A, 1986-A, 1982-A, 1982-B, 1982-C,
1982-D, 1983-A, 1984-B, 1987-A, 1988-A, 1988-1, 1989-A, 1989-1, 1989-2, 1990-1,
1990-2, 1991-1, 1991-2 Series and 1992-1 Series Convertible Subordinated
Debentures.  Anything in this Indenture or in the Debentures to the contrary
notwithstanding, the Debentures shall be neither subordinate nor superior in
right of payment to the 1984-A Series Convertible Subordinated Debentures due
1994, issued by the Company under an Indenture dated as of August 17, 1984, or
the 1985-A Series Convertible Subordinated Debentures due 1995, issued by the
Company under an Indenture dated as of August 13, 1985, or the 1986-A Series
Convertible Subordinated Debentures due 1996, issued by the Company under an
Indenture dated as of August 11, 1986, or the 1982-A, 1982-B, 1982-C, 1982-D,
1983-A, 1984-B and 1987-A Series Convertible Subordinated Debentures due 1997,
issued by the Company under an Indenture dated as of August 10, 1987, the
1988-A Series Convertible Subordinated Debentures due 1998, issued by the
Company under an Indenture dated August 30, 1988, the 1988-1 Series Convertible
Subordinated Debentures due 1998, issued by the Company under an Indenture
dated November 29, 1988, the 1989-A Series Convertible Subordinated Debentures
due 1999, issued by the Company under an Indenture dated August 22, 1989, or
the 1989-1 Series Convertible Subordinated Debentures due 1999, issued by the
Company under an Indenture dated August 22, 1989, or the 1989-2





                                       28
<PAGE>   36
Series Convertible Subordinated Debentures due 1999, issued by the Company
under an Indenture dated November 10, 1989, or the 1990-1 Series Convertible
Subordinated Debentures due 2000, issued by the Company under an Indenture
dated August 27, 1990, or the 1990-2 Series Convertible Subordinated Debentures
due 2000, issued by the Company under an Indenture dated November 9, 1990, or
the 1991-1 Series Convertible Subordinated Debentures due 2001, issued by the
Company under an Indenture dated August 27, 1991, the 1991-2 Series Convertible
Subordinated Debentures due 2001, issued by the Company under an Indenture
dated November 15, 1991 or the 1992-1    Series Convertible Subordinated
Debentures due 2002, issued by the Company under an Indenture dated November
13, 1992, but shall rank pari passu in all respects with such 1984-A, 1985-A,
1986-A, 1982-A, 1982-B, 1982-C, 1982-D, 1983-A, 1984-B, 1987-A, 1988-A, 1988-1,
1989-A, 1989-1, 1989-2, 1990-1, 1990-2, 1991-1 and 1991-2 Series Convertible
Subordinated Debentures.


                                  ARTICLE FIVE

                            CONVERSION OF DEBENTURES

            SECTION 5.01.  Conversion Privilege; Conversion Price.  Subject
to and upon compliance with the provisions of this Article Five, at the option
of the holder thereof, any Debenture or portion thereof may, at any time more
than six months after the date of the award of the debenture option pursuant to
which the Debenture was purchased and at or before the close of business on the
Due Date (or, in case such Debenture shall be called for redemption prior to
the Due Date and the Company does not default in timely payment of the
redemption price, then until the close of business on the date fixed for
redemption) be converted at the principal amount thereof, or of such portion
thereof, into fully paid and nonassessable whole shares of 1994-1 Series Stock,
at the conversion price of $21.3125 per share (the "conversion price").  The
conversion price shall not be subject to adjustment.  Rights with respect to
fractional share interests shall be governed by Section 5.04.

            SECTION 5.02.  Conversion Period; Limitation on Exercise.  The
conversion privilege set forth in Section 5.01 shall also be limited as
described below.

            (a)   Pledge of Debentures.  At any time that a Debenture is
            pledged or otherwise hypothecated as collateral for a loan to any
            person, the conversion privilege for that Debenture may not be
            exercised by any person.  If such pledge or hypothecation is not
            made in compliance with Section 10.06 hereof, the conversion
            privilege for such Debenture shall simultaneously with such pledge
            or hypothecation wholly and permanently terminate.  As soon as
            practicable, the Company shall give notice to the





                                       29
<PAGE>   37
            Trustee and any conversion agent of such prohibited pledge or
            hypothecation.  If such pledge or hypothecation is made in
            compliance with Section 10.06, the conversion privilege for that
            Debenture shall be exercisable upon receipt by the Company, the
            Trustee and the conversion agent from the Debentureholder and the
            person to whom the Debenture has been pledged or hypothecated of
            notice satisfactory to the Company that the pledge or hypothecation
            has been fully and completely discharged and released and no pledge
            or hypothecation of the Debenture has been substituted or has
            otherwise been created.  If such pledge or hypothecation is made in
            compliance with Section 10.06 and the Debenture is transferred to a
            person foreclosing on such Debenture, the conversion privilege for
            such Debenture shall simultaneously with such foreclosure wholly
            and permanently terminate.  Unless and until the Trustee and the
            conversion agent shall have received notice in writing of a
            prohibited pledge or hypothecation of the Debenture or a
            foreclosure, the Trustee and conversion agent shall be entitled in
            all respects to conclusively assume that no such pledge,
            hypothecation or foreclosure has taken place.

            (b)  Suspension Pending Listing and/or Registration.  Anything
            herein to the contrary notwithstanding, if at any time the Board of
            Directors determines, in its discretion, that the listing,
            registration, or qualification upon any securities exchange or
            under any state or Federal law of 1994-1 Series Stock into which
            the Debentures are convertible or of Common Stock into which the
            1994-1 Series Stock is convertible, or that the consent or approval
            of any governmental regulatory body, is necessary or desirable as a
            condition of, or in connection with, the issue of such shares, (1)
            the Company will in good faith and at its own expense as
            expeditiously as possible endeavor to secure such listing,
            registration, qualification, consent or approval, or take such
            other action, as the case may be, and (2) the conversion privilege
            of the Debentures may not be exercised in whole or in part until
            such listing, registration, qualification, consent or approval
            shall have been effected or obtained and the same shall have been
            free of any conditions not acceptable to the Board of Directors.

            In the case of any suspension of the conversion privilege pursuant
to this Section 5.02(b) that occurs or will continue after the Debentures first
become convertible, the Company shall promptly deliver to the Trustee and the
conversion agent an Officers' Certificate stating that such suspension has
occurred and the reason therefor and shall promptly mail notice of





                                       30
<PAGE>   38
such suspension and the reason therefor to the holders of the Debentures at
their addresses as they appear on the Debenture register.  Upon termination of
any such suspension, the Company shall promptly deliver to the Trustee and the
conversion agent an Officers' Certificate stating that such suspension has
terminated and shall promptly mail notice thereof to the holders of the
Debentures at their addresses as they appear on the Debenture register.

            (c)   Effect of Suspension.  Suspension of the right to exercise
            the conversion privilege shall not reduce any other rights under a
            Debenture.

            SECTION 5.03.  Manner of Exercising Conversion Privilege.  In
order to exercise the conversion privilege, the holder of any Debenture to be
converted shall surrender such Debenture to the Company at any office or agency
maintained for that purpose pursuant to Section 2.10 or 6.02, accompanied by
written notice to the Company at such office or agency that the holder elects
to convert such Debenture or a specified portion thereof.  Debentures
surrendered for conversion shall, if so required by the Company or the Trustee,
be duly endorsed by, or accompanied by instruments of transfer in form
satisfactory to the Company duly executed by, the registered holder or his duly
authorized attorney.  As promptly as practicable after the receipt of such
notice and the surrender of such Debenture as aforesaid, the Company shall
issue and shall deliver, at the office or agency at which such Debenture is
surrendered or such other place as the holder designates in writing, to such
holder (or, on his written order, in his name and for his benefit to some other
person), a certificate or certificates for the number of shares of 1994-1
Series Stock issuable upon the conversion of such Debenture (or specified
portion thereof), and a check in lieu of any fractional interest in accordance
with the provisions of this Article Five.  Such conversion shall be deemed to
have been effected on the Conversion Date and at such time the rights of the
holder of such Debenture as such Debentureholder shall cease and the person or
persons in whose name or names any certificate or certificates for shares of
1994-1 Series Stock shall be issuable upon such conversion shall be deemed to
have become the holder or holders of record of the shares represented thereby.

            In the case of any Debenture which is converted in part only, upon
such conversion the Company shall execute and the Trustee shall authenticate
and deliver to or on the order of the holder thereof, at the expense of the
Company, a new Debenture or Debentures of authorized denominations in principal
amount equal to the unconverted portion of such Debenture.  The conversion
privilege of the Debenture converted in part shall apply to such new Debenture
or Debentures.  No partial conversion will be permitted if, following
conversion, the remaining principal amount of the Debenture would be less than
$1,000.00.





                                       31
<PAGE>   39
            Interest will accrue on Debentures through the day immediately
preceding the date of conversion and will be paid to the holder of the
Debenture (or, on his written order, in his name and for his benefit to some
other person) when his shares of 1992-1 Series Stock are delivered.

            SECTION 5.04.  Fractional Shares.  Shares of 1994-1 Series Stock
shall be issued upon conversion of Debentures in whole shares only.  If more
than one Debenture shall be surrendered for conversion at one time by the same
holder, the number of shares which shall be issuable upon conversion shall be
computed on the basis of the aggregate principal amount of the Debentures (or
specified portions thereof to the extent permitted hereby) so surrendered.  If
any fractional interest in a share would be deliverable upon conversion of any
Debenture, the Company shall make an adjustment therefor by payment in the form
of a check or cash equal in amount to the product obtained by multiplying the
conversion price per share times such fractional interest.

            SECTION 5.05.  Notice of Certain Corporate Action.  In case:

            (a)  the Company shall declare a dividend (or any other
            distribution) on its 1994-1 Series Stock or its Common Stock
            payable otherwise than in cash or other property out of its
            retained earnings; or

            (b)  the Company shall authorize the granting to the holders of its
            1994-1 Series Stock or its Common Stock of rights to subscribe for
            or purchase any shares of capital stock of any class or of any
            other rights; or

            (c)   the Company shall authorize any reclassification of the
            1992-1 Series Stock or the Common Stock of the Company (other than
            a subdivision or combination of its outstanding shares of Common
            Stock), or any consolidation or merger to which the Company is a
            party and for which approval of any stockholders of the Company is
            required, or the sale or transfer of all or substantially all of
            the assets of the Company; or

            (d)  of the voluntary or involuntary dissolution, liquidation or
            winding up of the Company;

then the Company shall cause to be filed at the office or offices or agency or
agencies maintained for the purpose of conversion of Debentures pursuant to
Section 2.10 and 6.02, and shall cause to be mailed to the Trustee and to
holders of Debentures, at their last addresses as they shall appear upon the
register provided for in Section 2.05, at least 20 days (or 10 days in any case
specified in clause (a) or (b) above) prior to the applicable





                                       32
<PAGE>   40
record date hereinafter specified, a notice stating (i) the date on which a
record is to be taken for the purpose of such dividend, distribution, rights or
warrants, or, if a record is not to be taken, the date as of which the holders
of its 1994-1 Series Stock or Common Stock, as the case may be, which are to be
entitled to such dividend, distribution, rights or warrants are to be
determined, or (ii) the date on which such reclassification, consolidation,
merger, sale, transfer, dissolution, liquidation or winding up is expected to
become effective, and the date as of which it is expected that record holders
of 1994-1 Series Stock or Common Stock, as the case may be, shall be entitled
to exchange their shares of 1994-1 Series Stock or Common Stock for securities,
cash or other property deliverable upon such reclassification, consolidation,
merger, sale, transfer, dissolution, liquidation or winding up.  Failure to
give notice or any defect therein shall not affect the legality or validity of
any dividend, distribution, right, redistribution, charge, consolidation,
merger, sale, or transfer.  The Trustee shall have no duties with respect to
any notice provided or given to it pursuant to this Section 5.05, except to
exhibit the same to Debentureholders upon request.

            SECTION 5.06.  Company to Reserve Stock.  The Company shall at all
times reserve and keep available, free from preemptive rights, out of its
authorized but unissued 1994-1 Series Stock, for the purpose of effecting the
conversion of Debentures, the maximum number of shares of 1994-1 Series Stock
then issuable upon the conversion of all outstanding Debentures, and if at any
time the number of authorized but unissued shares of 1994-1 Series Stock shall
not be sufficient to effect such conversions the Company will take such
corporate action as may, in the opinion of its counsel, be necessary to
increase its authorized but unissued shares of 1994-1 Series Stock to such
number of shares as shall be sufficient for such purpose.

            SECTION 5.07.  Taxes on Conversions.  The Company will pay any
and all taxes (other than any income taxes) that may be payable in respect of
the issue or delivery of shares of 1994-1 Series Stock on conversion of
Debentures pursuant hereto.  The Company shall not, however, be required to pay
any tax which may be payable in respect of any transfer involved in the issue
and delivery of shares of 1994-1 Series Stock in a name other than that of the
holder of the Debenture or Debentures to be converted, and no such issue or
delivery shall be made unless and until the person requesting such issue has
paid to the Company the amount of any such tax or has established, to the
satisfaction of the Company, that such tax has been paid.

            SECTION 5.08.  Covenant as to Stock.  The Company covenants that
all shares of 1994-1 Series Stock which may be issued upon conversion of
Debentures, and all shares of Common Stock which may be issuable upon
conversion of 1994-1 Series





                                       33
<PAGE>   41
Stock, will upon issue be duly and validly issued and fully paid and
nonassessable and free from all taxes, liens and charges with respect to the
issue thereof.

            SECTION 5.09.  Provision in Case of Consolidation, Merger or
Sale.  In case of any consolidation of the Company with, or merger of the
Company into, any other corporation or the merger of any other corporation into
the Company (other than a merger in which the Company is the continuing
corporation and in which no change is made in the outstanding 1994-1 Series
Stock of the Company), or in case of any sale or transfer of all or
substantially all of the assets of the Company, the corporation formed by such
consolidation or the corporation which shall have acquired such assets or the
Company (if another corporation shall have merged into the Company) as the case
may be (the "Surviving Corporation"), shall execute and deliver to the Trustee
a supplemental indenture providing that the holder of each Debenture then
outstanding shall have the right thereafter (until the expiration of the
conversion right of such Debenture) to convert such Debenture into the kind and
amount of shares  of stock, other securities, cash or other property receivable
upon such consolidation, merger, sale or transfer by a holder of the number of
shares of 1994-1 Series Stock of the Company into which such Debenture might
have been converted immediately prior to such consolidation, merger, sale or
transfer.  The above provisions of this Section shall similarly apply to
successive consolidations, mergers, sales or transfers.  Notice of the
execution of any such supplemental indenture shall be mailed by the Company at
its cost and expense to the holders of the Debentures as soon as practicable
after the execution of such supplemental indenture.  Failure to give such
notice, or any defects therein, shall not affect the legality or validity of
any supplemental indenture.

            SECTION 5.10.  Trustee's Disclaimer of Responsibility for
Certain Matters.  Neither the Trustee nor any conversion agent shall be
accountable with respect to the validity or value (or the kind or amount) of
any shares of 1994-1 Series Stock, or of any securities or property, which may
at any time be issued or delivered upon the conversion of any Debenture; and
neither the Trustee nor any conversion agent makes any representation with
respect thereto.  Subject to the provisions of Section 9.01, neither the
Trustee nor any conversion agent shall be responsible for any failure of the
Company to issue, register or deliver any shares of 1994-1 Series Stock or
stock certificates or other securities or property upon the surrender of any
Debenture for the purpose of conversion or to comply with any of the covenants
of the Company contained in this Article Five.  Neither the Trustee nor the
conversion agent has any duty to determine whether any provisions of a
supplemental indenture pursuant to Section 5.09 are correct.





                                       34
<PAGE>   42
            SECTION 5.11.  Covenant as to Conversion Rights.  The Company
covenants and agrees that so long as any of the Debentures are outstanding, it
will not amend its Certificate of Incorporation in any way which would
adversely change the conversion rights of the 1994-1 Series Stock unless such
amendment shall have been approved in writing by the holders of not less than
sixty-six and two-thirds percent of all shares of 1994-1 Series Stock at the
time outstanding and by the holders of not less than sixty-six and two-thirds
percent of the aggregate principal amount of the Debentures at the time
outstanding.

                                  ARTICLE SIX

                      PARTICULAR COVENANTS OF THE COMPANY

            SECTION 6.01.  Payment of Principal and Interest.  The Company
covenants and agrees that it will duly and punctually pay or cause to be paid
the principal of and interest on each of the Debentures at the time and place
and in the manner provided in the Debentures to or upon the written order of
the holders thereof.
                       
            SECTION 6.02.  Office for Notices, Payments and Conversions.
The Company covenants and agrees, so long as any of the Debentures remain
outstanding, to maintain in Jackson, Mississippi, one or more offices or
agencies where the Debentures may be presented for payment of principal and
interest, for registration of transfer or exchange or for conversion and an
office or agency where notices and demands to or upon the Company in respect of
the Debentures or of this Indenture may be served.  The Company will give to
the Trustee notice of the location of any such offices or agencies and of any
change of location thereof.  In case the Company shall fail to maintain such
office or agency or shall fail to give such notice of the location or of any
change in the location thereof, presentations and demands may be made and
notices may be served at the principal office of the Trustee.

            SECTION 6.03.  Paying Agents.

            (a)   Whenever the Company shall have one or more paying agents, it
            will, prior to each due date of the principal of or interest on any
            Debentures, deposit with such paying agent a sum sufficient to pay
            the principal or interest so becoming due.  The Company will
            promptly notify the Trustee of its action or failure so to act.

            (b)   Any paying agent appointed by the Company, other than the
            Trustee, shall be a bank or trust company of the character and with
            the qualifications set forth in Section 9.09, and the Company
            covenants and agrees to cause such paying agent to execute and
            deliver to the Trustee an instrument in which it shall agree with
            the Trustee, subject to the provisions of this Section, (1)





                                       35
<PAGE>   43
            that such paying agent shall hold in trust for the benefit of the
            Debentureholders all sums held by such paying agent for the payment
            of the principal of or interest on any of the Debentures, (2) that
            such paying agent shall give to the Trustee notice of any failure
            by the Company (or any other obligor on the Debentures) to make any
            payment of the principal of or interest on the Debentures when the
            same shall be due and payable, and (3) at any time during the
            continuance of any such default, upon the written request of the
            Trustee, forthwith pay to the Trustee all sums so held in trust by
            such paying agent.

            (c)   If the Company shall at any time act as its own paying agent,
            then on or before each due date of the principal of or interest on
            any of the Debentures, it will set aside and segregate and hold in
            trust for the benefit of the holders of the Debentures a sum
            sufficient to pay such principal or interest so becoming due, and
            will notify the Trustee of its action or of any failure to take
            such action.

            (d)   Anything in this Section 6.03 to the contrary
            notwithstanding, the Company may at any time, for the purpose of
            obtaining the satisfaction and discharge of this Indenture or for
            any other purpose, pay or cause to be paid to the Trustee all sums
            held in trust by it or any paying agent as required by this
            Section, such sums to be held by the Trustee upon the trusts herein
            contained.

            (e)  Anything in this Section 6.03 to the contrary notwithstanding,
            the agreement to hold sums in trust as provided in this Section is
            subject to the provisions of Sections 14.03 and 14.04 hereof.

            SECTION 6.04.  Appointment to Fill a Vacancy in Office of
Trustee.  The Company, whenever necessary to avoid or fill a vacancy in the
Office of Trustee, will appoint, in the manner provided in Section 9.10, a
Trustee, so that there shall at all times be a Trustee hereunder.

            SECTION 6.05.  Further Instruments and Acts.  The Company will,
upon request of the Trustee, execute and deliver such further instruments and
do such further acts as may reasonably be necessary or proper to carry out more
effectually the purposes of this Indenture.

            SECTION 6.06.  Payment of Taxes; Maintenance of Corporate
Existence; Maintenance of Properties; Property Insurance.

            (a)   The Company will, and will cause each Subsidiary to, pay all
            taxes, assessments and governmental charges





                                       36
<PAGE>   44
            lawfully levied or assessed upon it, upon its property or any part
            thereof, or upon its income or profits, or any part thereof, before
            the same shall become delinquent, and will duly observe and conform
            to all lawful requirements of any governmental authority relative
            to any of its property, and all covenants, terms and conditions
            upon or under which any of its property is held; and within four
            months after the accruing of any lawful claims or demands for
            labor, materials, supplies or other objects, which might become a
            lien or charge upon any of its property or the income therefrom, it
            will pay or cause to be discharged or make adequate provision to
            satisfy and discharge the same; provided that nothing in this
            Section 6.06 or elsewhere in this Indenture contained shall require
            the Company to observe or conform to any requirements of any
            governmental authority or to cause to be paid or discharged, or to
            make provision for, any such lien or charge or to pay any such tax,
            assessment or governmental charge so long as the validity thereof
            shall be contested in good faith; and provided further that neither
            the Company nor any Subsidiary shall be required to pay any such
            taxes, assessments or charges, if, in the judgment of the Board of
            Directors of the Company or such Subsidiary, such payment shall no
            longer be advantageous to the Company or such Subsidiary in the
            conduct of its business and nonpayment shall not be disadvantageous
            in any material respect to the Debentureholders.

            (b)  Subject to the other provisions of this Indenture, the Company
            will, and will cause each Subsidiary to, maintain its corporate
            existence and right to carry on its business and duly procure all
            necessary renewals and extensions thereof and use its best efforts
            to maintain, preserve and renew all such rights, powers, privileges
            and franchises; provided, however, that nothing herein contained
            shall be construed to prevent the Company or Subsidiary from
            ceasing or omitting to exercise any right, power, privilege or
            franchise (including, in the case of a Subsidiary, the corporate
            existence thereof) which in the judgment of the Board of Directors
            of the Company or of such Subsidiary should not be exercised and
            which is not advantageous in any material respect to the
            Debentureholders.

            (c)   The Company will, and will cause each Subsidiary to, keep and
            maintain all buildings, plants and other property owned or leased
            by it in such good condition, repair and working order and supplied
            with all such necessary equipment as in the judgment of the Company
            may be necessary, so that the business carried on in connection
            therewith may be properly and advantageously





                                       37
<PAGE>   45
            conducted at all times; provided, however, that nothing in this
            Section 6.06 shall prevent the Company or a Subsidiary from
            selling, abandoning or otherwise disposing of any building, plant
            or property whenever in the opinion of the Company the retention
            thereof is inadvisable or not necessary to the business of the
            Company or such Subsidiary.

            (d)   The Company will insure and keep insured, and will cause each
            Subsidiary to insure and keep insured, to a reasonable amount with
            reputable insurance companies, to the extent such insurance is
            reasonably available, so much of their respective properties as
            companies engaged in a similar business and to the extent such
            companies in accordance with good business practice customarily
            insure properties of a similar character against loss by fire and
            the extended coverage perils and other hazards.

            SECTION 6.07.  Annual Review Certificate.  The Company covenants
and agrees to deliver to the Trustee, on or before a date not more than four
months after the end of each fiscal year of the Company ending after the date
hereof, an Officers' Certificate, which shall conform to the provisions of
Section 16.06, stating that a review of the activities of the Company and of
its Subsidiaries during the preceding fiscal year has been made under the
supervision of the signing officers with a view to determining whether the
Company has kept, observed, performed and fulfilled its obligations under this
Indenture, and further stating, as to each such officer signing such
certificate, that to the best of his knowledge the Company has kept, observed,
performed and fulfilled each and every such covenant in this Indenture
contained and is not in default in the performance and observance of any of the
terms, provisions and conditions hereof (or, if the Company shall be in
default, specifying all such defaults and the nature thereof of which he may
have knowledge) and that to the best of his knowledge no event has occurred and
remains in existence by reason of which payments on account of the principal of
or interest on the Debentures is prohibited.

            SECTION 6.08.  No Lien Created.  This Indenture and the
Debentures do not create a lien, charge, or encumbrance on any property of the
Company or any Subsidiary.


                                 ARTICLE SEVEN

                      DEBENTUREHOLDERS' LISTS AND REPORTS
                         BY THE COMPANY AND THE TRUSTEE

            SECTION 7.01.  Debentureholders' Lists.  The Company covenants
and agrees that it will furnish or cause to be furnished to the Trustee not
more than 30 or less than 15 calendar days before an Interest Payment Date in
each year and at such other





                                       38
<PAGE>   46
times as the Trustee may request in writing, within thirty days after receipt
by the Company of any such request, a list in such form as the Trustee may
reasonably require containing all information in the possession or control of
the Company, and of any paying agents of the Company other than the Trustee, as
to the names and addresses of the holders of Debentures obtained (in the case
of each list other than the first list) since the date as of which the next
previous list, if any, was furnished.  Any such list may be dated as of a date
not more than fifteen days prior to the time such information is furnished or
caused to be furnished, and need not include information received after such
date, but the list need not be furnished if the Trustee is the Debenture
registrar.

            SECTION 7.02.  Preservation and Disclosure of Lists.

            (a)   The Trustee shall preserve, in as current a form as is
            reasonably practicable, all information as to the names and
            addresses of the holders of Debentures (1) contained in the most
            recent list furnished to it as provided in Section 7.01 and (2)
            received by it in the capacity of Debenture registrar (if so
            acting) hereunder.

            The Trustee may (1) destroy any list furnished to it as provided in
            Section 7.01 upon receipt of a new list so furnished, (2) destroy
            any information received by it as paying agent (if so acting)
            hereunder upon delivering to itself as Trustee, not earlier than
            forty-five days after an Interest Payment Date, a list containing
            the names and addresses of the holders of Debentures obtained from
            such information since the delivery of the next previous list, if
            any, and (3) destroy any list delivered to itself as Trustee which
            was compiled from information received by it as paying agent (if so
            acting) hereunder upon the receipt of a new list so delivered.

            (b)   In case three or more holders of Debentures (hereinafter
            referred to as "applicants") apply in writing to the Trustee and
            furnish to the Trustee reasonable proof that each such applicant
            has owned a Debenture for a period of at least six months preceding
            the date of such application, and such application states that the
            applicants desire to communicate with other holders of Debentures
            with respect to their rights under this Indenture or under the
            Debentures and is accompanied by a copy of the form of proxy or
            other communication which such applicants propose to transmit, then
            the Trustee shall, within five business days after the receipt of
            such application, at its election, either





                                       39
<PAGE>   47

                  (1)   afford such applicants access to the information
                  preserved at the time by the Trustee in accordance with the
                  provisions of subsection (a) of this Section 7.02, or

                  (2)   inform such applicants as to the approximate number of
                  holders of Debentures whose names and addresses appear in the
                  information preserved at the time by the Trustee in
                  accordance with the provisions of subsection (a) of this
                  Section 7.02, and as to the approximate cost of mailing to
                  such Debentureholders the form of proxy or other
                  communication, if any, specified in such application.

            If the Trustee shall elect not to afford such applicants access to
such information, the Trustee shall, upon the written request of such
applicants, mail to each Debentureholder whose name and address appears in the
information preserved at the time by the Trustee in accordance with the
provisions of subsection (a) of this Section 7.02, a copy of the form of proxy
or other communication which is specified in such request, with reasonable
promptness after a tender to the Trustee of the material to be mailed and of
payment, or provision for the payment, of the reasonable expenses of mailing,
unless within five days after such tender the Trustee shall mail to such
applicants and file with the Securities and Exchange Commission, together with
a copy of the material to be mailed, a written statement to the effect that, in
the opinion of the Trustee, such mailing would be contrary to the best
interests of the holders of Debentures or would be in violation of applicable
law.  Such written statement shall specify the basis of such opinion.  If said
Commission, after opportunity for a hearing upon the objections specified in
the written statement so filed, shall enter an order refusing to sustain any of
such objections or if, after the entry of an order sustaining one or more of
such objections, said Commission shall find, after notice and opportunity for
hearing, that all the objections so sustained have been met and shall enter an
order so declaring, the Trustee shall mail copies of such material to all such
Debentureholders with reasonable promptness after the entry of such order and
the renewal of such tender; if no such order is entered by said Commission, the
Trustee shall be relieved of any obligation or duty to such applicants
respecting their application.

            (c)   Each and every holder of the Debentures, by receiving and
            holding the same, agrees with the Company and the Trustee that
            neither the Company nor the Trustee





                                       40
<PAGE>   48
            nor any paying agent shall be held accountable by reason of the
            disclosure of any such information as to the names and addresses of
            the holders of Debentures in accordance with the provisions of
            subsection (b) of this Section 7.02, regardless of the source from
            which such information was derived, and that the Trustee shall not
            be held accountable by reason of mailing any material pursuant to a
            request made under said subsection (b).

            SECTION 7.03.  Reports by the Company.

            (a)   The Company covenants and agrees to file with the Trustee,
            within fifteen days after the Company is required to file the same
            with the Securities and Exchange Commission, copies of the annual
            reports and of the information, documents and other reports (or
            copies of such portions of any of the foregoing as said Commission
            may from time to time by rules and regulations prescribe) which the
            Company may be required to file with said Commission pursuant to
            Section 13 or Section 15(d) of the Securities Exchange Act of 1934;
            or, if the Company is not required to file information, documents
            or reports pursuant to either of such sections, then to file with
            the Trustee and said Commission, in accordance with rules and
            regulations prescribed from time to time by said Commission, such
            of the supplementary and periodic information, documents and
            reports which may be required pursuant to Section 13 of the
            Securities Exchange Act of 1934 in respect of a security listed and
            registered on a national securities exchange as may be prescribed
            from time to time in such rules and regulations.

            (b)   The Company covenants and agrees to file with the Trustee and
            the Securities and Exchange Commission, in accordance with the
            rules and regulations prescribed from time to time by said
            Commission, any additional information, documents and reports with
            respect to compliance by the Company with the conditions and
            covenants provided for in this Indenture as may be required from
            time to time by such rules and regulations.

            (c)   The Company covenants and agrees to transmit by mail to all
            holders of Debentures, as the names and addresses of such holders
            appear upon the registry books of the Company, within thirty days
            after the filing thereof with the Trustee, such summaries of any
            information, documents and reports required to be filed by the
            Company pursuant to subsections (a) and (b) of this Section 7.03 as
            may be required by rules and





                                       41
<PAGE>   49
            regulations prescribed from time to time by the Securities and
            Exchange Commission, except insofar as such summaries, documents or
            reports have previously been furnished to such Debentureholder.

            (d)   The Company covenants and agrees to transmit by mail to all
            holders of Debentures, as the names and addresses of such holders
            appear on the registry books of the Company, and to furnish to the
            Trustee annually within 120 days after the end of each fiscal year
            of the Company, beginning with the fiscal year ending June 30,
            1988, a copy of the consolidated balance sheet of the Company and
            its consolidated subsidiaries as at the end of its annual
            accounting period and a consolidated profit and loss statement of
            the Company and its consolidated subsidiaries for such period,
            prepared in accordance with generally accepted accounting
            principles and accompanied by the certificate of a firm of
            independent public accountants.

            SECTION 7.04.  Reports by the Trustee.

            (a)  If this Indenture has been qualified under the Trust Indenture
            Act of 1939, then on or before July 15 in every year thereafter, so
            long as any Debentures are outstanding hereunder, the Trustee shall
            transmit to the Debentureholders as hereinafter in this Section
            7.04 provided, a brief report dated as of May 15 of the year in
            which such report is made with respect to:

                  (1)   its eligibility under Section 9.09, and its
                  qualification under Section 9.08, or in lieu thereof, if to
                  the best of its knowledge it has continued to be eligible and
                  qualified under such Sections, a written statement to such
                  effect;

                  (2)   the character and amount of any advances (and if the
                  Trustee elects so to state, the circumstances surrounding the
                  making thereof) made by the Trustee (as such) which remain
                  unpaid on the date of such report, and for the reimbursement
                  of which it claims or may claim a lien or charge prior to
                  that of the Debentures, on any property or funds held or
                  collected by it as Trustee, except that the Trustee shall not
                  be required (but may elect) to state such advances if such
                  advances so remaining unpaid aggregate not more than one-half
                  of one per cent of the principal amount of the Debentures
                  outstanding on the date of such report;





                                       42
<PAGE>   50
                  (3)   the amount, interest rate, and maturity date of all
                  other indebtedness owing by the Company (or by any other
                  obligor on the Debentures) to the Trustee in its individual
                  capacity, on the date of such report, with a brief
                  description of any property held as collateral security
                  therefor, except an indebtedness based upon a creditor
                  relationship arising in any manner described in paragraphs
                  (2), (3), (4) or (6) of subsection (b) of Section 9.13;

                  (4)   the property and funds, if any, physically in the
                  possession of the Trustee, as such, on the date of such
                  report; and

                  (5)   any action taken by the Trustee in the performance if
                  its duties under this Indenture which it has not previously
                  reported and which in its opinion materially affects the
                  Debentures, except action in respect of a default, notice of
                  which has been or is to be withheld by it in accordance with
                  the provisions of Section 8.08.


            (b)   If this Indenture has been qualified under the Trust
            Indenture Act of 1939, the Trustee shall transmit to the
            Debentureholders, as hereinafter provided, a brief report with
            respect to the character and amount of any advances (and if the
            Trustee elects so to state, the circumstances surrounding the
            making thereof) made by the Trustee (as such), since the date of
            the last report transmitted pursuant to the provisions of
            subsection (a) of this Section 7.04 (or if no such report has yet
            been so transmitted, since the date of execution of this
            Indenture), for the reimbursement of which it claims or may claim a
            lien or charge prior to that of the Debentures on property or funds
            held or collected by it as Trustee, and which it has not previously
            reported pursuant to this subsection, except that the Trustee shall
            not be required (but may elect) to report such advances if such
            advances remaining unpaid at any time aggregate ten per cent or
            less of the principal amount of Debentures outstanding at such
            time, such report to be transmitted within ninety days after such
            time.


            (c)   Reports pursuant to this Section 7.04 shall be transmitted by
            mail to all holders of Debentures, as the names and addresses of
            such holders appear upon the registry books of the Company.





                                       43
<PAGE>   51
            (d)   A copy of any such report shall, at the time of such
            transmission to Debentureholders, be filed by the Trustee with each
            stock exchange upon which the Debentures are listed and also with
            the Securities and Exchange Commission.  The Company will notify
            the Trustee when the Debentures are listed on any stock exchange.

                                 ARTICLE EIGHT

                  REMEDIES OF THE TRUSTEE AND DEBENTUREHOLDERS
                              ON EVENT OF DEFAULT

            SECTION 8.01.  Event of Default.  In case one or more of the
following Events of Default shall have occurred and be continuing, that is to
say:

            (a)   default in the payment of any installment of interest upon
            any of the Debentures as and when the same shall become due and
            payable, whether or not such payment is prohibited by the
            provisions of Article Four, and continuance of such default for a
            period of thirty days; or

            (b)   default in the payment of the principal of any of the
            Debentures as and when the same shall become due and payable either
            at maturity, by declaration or otherwise, and in each case whether
            or not such payment is prohibited by the provisions of Article
            Four; or

            (c)   failure on the part of the Company duly to observe or perform
            any other of its covenants or agreements contained in the
            Debentures or in this Indenture for a period of sixty days after
            the date on which written notice of such failure, specifying such
            default and requiring the same to be remedied, shall have been
            given to the Company by the Trustee, or to the Company and the
            Trustee by the holders of at least twenty-five per cent in
            principal amount of the Debentures at the time outstanding; or

            (d)   an event of default as defined in any indenture or instrument
            evidencing or under which the Company has at the date of this
            Indenture or shall hereafter have outstanding any indebtedness for
            money borrowed by the Company shall have happened and shall be
            continuing and such indebtedness shall have been accelerated so
            that the same shall be or become due and payable prior to the date
            on which the same would otherwise become due and payable, and such
            acceleration shall not be contested in good faith by the Company,
            and such acceleration shall





                                       44
<PAGE>   52
            not be rescinded or annulled, or such indebtedness shall not have
            been discharged, or there shall not have been deposited in trust a
            sum of money sufficient to discharge in full such indebtedness,
            within ten days after written notice of such acceleration to the
            Company from the Trustee or to the Company and the Trustee from the
            holders of not less than twenty-five per cent in aggregate
            principal amount of the Debentures then outstanding hereunder;
            provided, however, that if such event of default under such
            indenture or instrument shall be remedied or cured by the Company
            or be waived by the holders of such indebtedness in any manner
            authorized by such indenture or instrument or shall otherwise cease
            to exist, then the Event of Default hereunder by reason thereof
            shall be deemed likewise to have been thereupon remedied, cured or
            waived without further action upon the part of either the Trustee
            or any of the Debentureholders; and provided further that the
            Trustee, subject to Section 9.01, shall not be charged with
            knowledge of any such default unless written notice of such default
            shall have been given to the Trustee by the Company, by the Trustee
            then acting under any indenture or other instrument under which
            such default shall have occurred, or by the holders of at least
            five per cent in aggregate principal amount of the Debentures at
            the time outstanding; or

            (e)   the entry of a decree or order for relief by a court having
            jurisdiction in the premises in respect of the Company in an
            involuntary case under the Federal Bankruptcy Code or any other
            applicable federal or state bankruptcy, insolvency or other similar
            law now or hereafter in effect, or appointing a receiver,
            liquidator, assignee, trustee, sequestrator or other similar
            official of the Company or of any substantial part of its property,
            or ordering the winding up or liquidation of its affairs, and the
            continuance of any such decree or order unstayed and in effect for
            a period of sixty consecutive days; or

            (f)   the commencement by the Company of a voluntary case under the
            Federal Bankruptcy Code or any other applicable federal or state
            bankruptcy, insolvency or other similar law now or hereafter in
            effect, or the consent by the Company to the entry of an order for
            relief in an involuntary case under any such law, or the consent by
            the Company to the appointment of or taking possession by a
            receiver, liquidator, assignee, trustee, sequestrator or other
            similar official of the Company or of any substantial part of its
            property, or the making





                                       45
<PAGE>   53
            by the Company of an assignment for the benefit of creditors;

then and in each and every such case, unless the principal of all of the
Debentures shall have already become due and payable, either the Trustee or the
holders of not less than twenty-five per cent in aggregate principal amount of
the Debentures then outstanding hereunder, by notice in writing to the Company
(and to the Trustee if given by Debentureholders), may declare the principal of
all the Debentures to be due and payable immediately, and upon any such
declaration the same shall become and shall be immediately due and payable,
notwithstanding anything to the contrary contained in this Indenture or in the
Debentures.  This provision, however, is subject to the condition that if at
any time after the principal of the Debentures shall have been so declared due
and payable, and before any judgment or decree for the payment of the monies
due shall have been obtained or entered as hereinafter provided, the Company
shall pay or shall deposit with the Trustee a sum sufficient to pay all matured
installments of interest upon all of the Debentures and the principal of any
and all Debentures which shall have become due otherwise than by acceleration
(with interest on such principal and, to the extent that payment of such
interest is enforceable under applicable law, on overdue installments of
interest, at the rate borne by the Debentures, through the day preceding the
date of such payment or deposit) and such amount as shall be sufficient to
cover reasonable compensation to the Trustee, its agents, attorneys and
counsel, and all other expenses and liabilities incurred and all advances made
by the Trustee, except as the result of its negligence or bad faith, and any
and all defaults under this Indenture, other than the nonpayment of principal
and accrued interest on Debentures which shall have become due by acceleration,
shall have been remedied -- then and in every such case the holders of a
majority in aggregate principal amount of the Debentures then outstanding, by
written notice to the Company and to the Trustee, may waive all defaults and
rescind and annul such declaration and its consequences; but no such waiver or
rescission and annulment shall extend to or shall affect any subsequent
default, or shall impair any right consequent thereon.

            In case the Trustee shall have proceeded to enforce any right under
this Indenture and such proceedings shall have been discontinued or abandoned
because of such rescission or annulment or for any other reason or shall have
been determined adversely to the Trustee, then and in every case, subject to
any determination in such proceeding, the Company, the Trustee and the
Debentureholders shall be restored respectively to their several positions and
rights hereunder, and thereafter all rights, remedies and powers of the Company
and the Trustee shall continue as though no such proceeding had been taken.





                                       46
<PAGE>   54
            SECTION 8.02.  Payment of Debentures on Default; Suit Therefor.
The Company covenants that (1) in case default shall be made in the payment of
any installment of interest upon any of the Debentures as and when the same
shall become due and payable, and such default shall have continued for a
period of thirty days, or (2) in case default shall be made in the payment of
the principal of any of the Debentures as and when the same shall have become
due and payable, whether at maturity of the Debentures or upon redemption or by
declaration or otherwise -- then, upon demand of the Trustee, the Company will
pay to the Trustee, for the benefit of the holders of the Debentures, the whole
amount that then shall have become due and payable on all such Debentures for
principal or interest, or both, as the case may be, with interest upon the
overdue principal and (to the extent that payment of such interest is
enforceable under applicable law) upon overdue installments of interest at the
rate borne by the Debentures, and, in addition thereto, such further amount as
shall be sufficient to cover the costs and expenses of collection, including a
reasonable compensation to the Trustee, its agents, attorneys, and counsel, and
any expenses or liabilities incurred by the Trustee hereunder other than
through its negligence or bad faith.

            In case the Company shall fail forthwith to pay such amounts upon
such demand, the Trustee, in its own name and as trustee of an express trust,
shall then be entitled and empowered to institute any actions or proceedings at
law or in equity for the collection of the sums so due and unpaid, and may
prosecute any such action or proceeding to judgment or final decree, and may
enforce any such judgment or final decree against the Company or any other
obligor on the Debentures and collect in the manner provided by law out of the
property of the Company or any other obligor on the Debentures wherever
situated the monies adjudged or decreed to be payable.

            In case there shall be pending any receivership, insolvency,
liquidation, bankruptcy, reorganization, arrangement, adjustment, composition
or other judicial proceeding relative to the Company or any other obligor on
the Debentures, its or their creditors, as such, or its or their property, the
Trustee, irrespective of whether the principal of the Debentures shall then be
due and payable as therein expressed or by declaration or otherwise and
irrespective of whether the Trustee shall have made any demand pursuant to the
provisions of this Section 8.02, shall be entitled and empowered, by the
intervention in such proceedings or otherwise, to file and prove a claim or
claims for the whole amount of principal and interest owing and unpaid in
respect of the Debentures, and, in case of any judicial proceedings, to file
such proofs of claim and other papers or documents as may be necessary or
advisable in order to have the claims of the Trustee and of the
Debentureholders allowed in such judicial proceedings relative to the Company
or any other obligor on the Debentures,





                                       47
<PAGE>   55
its or their creditors, or its or their property, and to collect and receive
any monies or other property payable or deliverable on any such claims, and to
distribute the same after the deduction of its charges and expenses; and any
receiver, assignee or trustee in bankruptcy or reorganization is hereby
authorized by each of the Debentureholders to make such payments to the
Trustee, and, in the event that the Trustee shall consent to the making of such
payments directly to the Debentureholders, to pay to the Trustee any amount due
it for compensation and expenses, including counsel fees incurred by it up to
the date of such distribution.  To the extent that such payment of reasonable
compensation, expenses and counsel fees out of the estate in any such
proceedings shall be denied for any reason, payment of the same shall be
secured by a lien on, and shall be paid out of, any and all distributions,
dividends, monies, securities and other property which the holders of the
Debentures may be entitled to receive in such proceedings, whether in
liquidation or under any plan of reorganization or arrangement or otherwise.

            All rights of action and of asserting claims under this Indenture,
or under any of the Debentures, may be enforced by the Trustee without the
possession of any of the Debentures, or the production thereof on any trial or
other proceeding relative thereto, and any such suit or proceeding instituted
by the Trustee shall be bought in its own name as trustee of an express trust,
and any recovery of judgment shall be for the ratable benefit of the holders of
the Debentures, subject to the provisions of Article Four.

            SECTION 8.03.  Application of Monies Collected by Trustee.  Subject
to the provisions of Article Four, any monies collected by the Trustee pursuant
to Section 8.02 shall be applied in the order following, at the date or dates
fixed by the Trustee for the distribution of such monies, upon presentation of
the several Debentures, and stamping thereon the payment, if only partially
paid, and upon surrender thereof if fully paid:

            First:  To the payment of costs and expenses of collection and
            reasonable compensation to the Trustee, its agents, attorneys and
            counsel, and of all other expenses and liabilities incurred, and
            all advances made, by the Trustee except as a result of its
            negligence or bad faith;

            Second:  In case the principal of the outstanding Debentures shall
            not have become due and be unpaid, to the payment of interest on
            the Debentures, in the order of the maturity of the installments of
            such interest, with interest (to the extent that such interest has
            been collected by the Trustee) upon the overdue installments of
            interest at the same rate as the rate borne by the





                                       48
<PAGE>   56
            Debentures, such payments to be made ratably to the persons
            entitled thereto, without discrimination or preference; and

            Third:  In case the principal of the outstanding Debentures shall
            have become due, by declaration or otherwise, to the payment of the
            whole amount then owing and unpaid upon the Debentures for
            principal and interest, with interest on the overdue principal; and
            (to the extent that such interest has been collected by the
            Trustee) upon overdue installments of interest at the rate borne by
            the Debentures; and in case such monies shall be insufficient to
            pay in full the whole amounts so due and unpaid upon the
            Debentures, then to the payment of such principal and interest
            without preference or priority of principal over interest, or of
            interest over principal, or of any installment of interest over any
            other installment of interest, or of any Debenture over any other
            Debenture, ratably to the aggregate of such principal and accrued
            and unpaid interest; and

            Fourth:  To the payment of the remainder, if any, to the Company,
            its successors or assigns, or to whomsoever may be lawfully
            entitled to receive the same, or as a court of competent
            jurisdiction may direct.

            SECTION 8.04.  Proceedings by Debentureholders.  No holder of
any Debenture shall have any right by virtue of or by availing of any provision
of this Indenture to institute any suit, action or proceeding in equity or at
law upon or under or with respect to this Indenture or for the appointment of a
receiver or trustee, or for any other remedy hereunder, unless such holder
previously shall have given to the Trustee written notice of default and of the
continuance thereof, as hereinbefore provided, and unless also (i) the holders
of not less than twenty-five per cent in aggregate principal amount of the
Debentures then outstanding shall have made written request upon the Trustee to
institute such action, suit or proceeding in its own name as Trustee hereunder
and (ii) the holders making such request shall have offered to the Trustee such
reasonable indemnity as it may require against the costs, expenses and
liabilities to be incurred therein or thereby, (iii) the Trustee for sixty days
after its receipt of such notice, request and offer of indemnity shall have
neglected or refused to institute any such action, suit or proceeding, and (iv)
no direction inconsistent with such written request shall have been given to
the Trustee during such sixty day period by the holders of a majority in
principal amount of the Debentures then outstanding; it being understood and
intended,and being expressly covenanted by the taker and holder of every
Debenture with every other taker and holder and the Trustee, that





                                       49
<PAGE>   57
no one or more holders of Debentures shall have any right in any manner
whatever by virtue of or by availing of any provision of this Indenture to
affect, disturb or prejudice the rights of any other holder of such Debentures,
or to obtain or seek to obtain priority over or preference to any other such
holder, or to enforce any right under this Indenture, except in the manner
herein provided and for the equal, ratable and common benefit of all holders of
Debentures.

            Notwithstanding any other provisions in this Indenture, but subject
to the provisions of Article Four, the right of any holder of any Debenture to
receive payment of the principal and interest on such Debenture, on or after
the respective due dates expressed in such Debenture, or to institute suit for
the enforcement of any such payment on or after such respective dates against
the Company, shall not be impaired or affected without the consent of such
holder; provided, however, that the provisions of this Section 8.04 are subject
to the provisions of Article Four.

            SECTION 8.05.  Proceedings by Trustee.  In case of an Event of
Default hereunder the Trustee may in its discretion proceed to protect and
enforce the rights vested in it by this Indenture by such appropriate judicial
proceedings as the Trustee shall deem most effectual to protect and enforce any
of such rights, either by suit in equity or by action at law or by proceeding
in bankruptcy or otherwise, whether for the specific enforcement of any
covenant or agreement contained in this Indenture or in aid of the exercise of
any power granted in this Indenture, or to enforce any other legal or equitable
right vested in the Trustee by this Indenture or by law.

            SECTION 8.06.  Remedies Cumulative and Continuing.  All powers
and remedies given by this Article Eight to the Trustee or to the
Debentureholders shall, to the extent permitted by law, be deemed cumulative
and not exclusive of any thereof or of any other powers and remedies available
to the Trustee or the holders of the Debentures by judicial proceedings or
otherwise to enforce the performance or observance of the covenants and
agreements contained in this Indenture, and no delay or omission of the Trustee
or of any holder of any of the Debentures to exercise any right or power
accruing upon any default occurring and continuing as aforesaid shall impair
any such right or power, or shall be construed to be a waiver of any such
default or an acquiescence therein; and, subject to the provisions by Section
8.04, every power and remedy given by this Article Eight or by law to the
Trustee or to Debentureholders may be exercised from time to time, and as often
as shall be deemed expedient, by the Trustee or by the Debentureholders.

            SECTION 8.07.  Direction of Proceedings and Waiver of Defaults by
Majority of Debentureholders.  The holders of a





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<PAGE>   58
majority in aggregate principal amount of the Debentures at the time
outstanding determined subject to the provisions of Section 10.04 shall have
the right to direct the time, method and place of conducting any proceeding for
any remedy available to the Trustee, or exercising any trust or power conferred
on the Trustee; provided, however, that the Trustee, subject to the provisions
of Section 9.01, shall have the right to decline to follow any such direction
if the Trustee in good faith shall, by a Responsible Officer or Officers of the
Trustee, determine that the proceeding so directed would involve it in a
personal liability or would be in conflict with any rule of law or provision of
this Indenture; and provided further, that nothing in this Indenture contained
shall impair the right of the Trustee in its discretion to take any action
deemed proper by the Trustee and which is not inconsistent with such direction
by Debentureholders.  Prior to any declaration accelerating the maturity of the
Debentures, the holders of a majority in aggregate principal amount of the
Debentures at the time outstanding determined subject to the provisions of
Section 10.04 may on behalf of the holders of all of the Debentures waive any
past default or Event of Default hereunder and its consequences, except by
default in the payment of interest on the principal of any of the Debentures or
in respect of a covenant or provision hereof which under Article Twelve cannot
be modified or amended without the consent of the holder of each Debenture
affected.  Upon any such waiver, the Company, the Trustee and the holders of
the Debentures shall be restored to their former positions and rights
hereunder, respectively; but no such waiver shall extend to any subsequent or
other default or Event of Default or impair any right consequent thereon.
Whenever any default or Event of Default hereunder shall have been waived as
permitted by this Section 8.07, said default or Event of Default shall for all
purposes of the Debentures and this Indenture be deemed to have been cured and
to be not continuing.

            SECTION 8.08.  Notice of Defaults.  The Trustee shall, within
ninety days after the occurrence of a default, mail to all holders of
Debentures, as the names and addresses of such holders appear upon the registry
books of the Company, notice of all defaults known to the Trustee, unless such
defaults shall have been cured or waived before the giving of such notice (the
term "defaults" for the purposes of this Section 8.08 being hereby defined to
be the events specified in clauses (a), (b), (c), (d), (e) and (f) of Section
8.01, not including any periods of grace provided for in said clauses (a), (c),
(d) and (e) and irrespective of the giving of written notice provided for in
said clauses (c) and (d)); provided, that, except in the case of default in the
payment of the principal of or interest on any of the Debentures, the Trustee
shall be protected in withholding such notice if and so long as the board of
directors, the executive committee, or a trust committee of directors and/or
Responsible





                                       51
<PAGE>   59
Officers of the Trustee in good faith determine that the withholding of such
notice is in the interests of the Debentureholders.

            SECTION 8.09.  Undertaking to Pay Costs.  All parties to this
Indenture agree, and each holder of any Debenture by his acceptance thereof
shall be deemed to have agreed, that any court may in its discretion require,
in any suit for the enforcement of any right or remedy under this Indenture, or
in any suit against the Trustee for any action taken or omitted by it as
Trustee, the filing by any party litigant in such suit of an undertaking to pay
the costs of such suit, and that such court may in its discretion assess
reasonable costs, including reasonable attorneys' fees, against any party
litigant in such suit, having due regard to the merits and good faith of the
claims or defenses made by such party litigant; but the provisions of this
Section 8.09 shall not apply to any suit instituted by the Trustee, to any suit
instituted by any Debentureholder, or group of Debentureholders, holding in the
aggregate more than ten per cent in aggregate principal amount of the
Debentures outstanding, or to any suit instituted by any Debentureholder for
the enforcement of the payment of the principal of or interest on any Debenture
against the Company on or after the due date expressed in such Debenture.

            SECTION 8.10.  Enforcement of Conversion Rights.  Anything in
this Indenture to the contrary notwithstanding, the holder of any Debenture,
without reference to and without the consent of either the Trustee or the
holder of any other Debenture, in his own behalf and for his own benefit may
enforce, and may institute and maintain any proceedings suitable to enforce,
his right to convert his Debenture into 1994-1 Series Stock as provided in
Article Five.

            SECTION 8.11.  Waiver of Stay, Extension, or Usury Laws.  The
Company covenants (to the extent that it may lawfully do so) that it will not
at any time insist upon, or plead, or in any manner whatsoever claim or take
the benefit or advantage of, any stay, extension, or usury law wherever
enacted, now or at any time hereafter in force, which may affect the covenants
or the performance of this Indenture; and the Company (to the extent that it
may lawfully do so) hereby expressly waives all benefit or advantage of any
such law, and covenants that it will not hinder, delay, or impede the execution
of any power herein granted to the Trustee, but will suffer and permit the
execution of every such power as though no such law had been enacted.





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<PAGE>   60
                                  ARTICLE NINE

                             CONCERNING THE TRUSTEE

            SECTION 9.01.  Duties and Liabilities of Trustee.  The Trustee
prior to the occurrence of an Event of Default and after the curing of all
Events of Default which may have occurred, undertakes to perform such duties
and only such duties as are specifically set forth in this Indenture.  No
implied covenants or obligations shall be read into this Indenture against the
Trustee.  In case an Event of Default has occurred (which has not been cured)
the Trustee shall exercise such of the rights and powers invested in it by this
Indenture, and use the same degree of care and skill in their exercise, as a
prudent man would exercise or use under the circumstances in the conduct of his
own affairs.

            No provisions of this Indenture shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act, or its own willful misconduct of its own affairs, except that

            (a)   prior to the occurrence of an Event of Default and after the
            curing of all Events of Default which may have occurred:

                  (1)   the duties and obligations of the Trustee shall be
                  determined solely by the express provisions of this
                  Indenture, and the Trustee shall not be liable except for the
                  performance of such duties and obligations as are
                  specifically set forth in this Indenture, and no implied
                  covenants or obligations shall be read into this Indenture
                  against the Trustee; and

                  (2)   in the absence of bad faith on the part of the Trustee,
                  the Trustee may conclusively rely, as to the truth of the
                  statements and the correctness of the opinions expressed
                  therein, upon any certificates or opinions furnished to the
                  Trustee and conforming to the requirements of this Indenture;
                  but in the case of any such certificates or opinions which by
                  any provision hereof are specifically required to be
                  furnished to the Trustee, the Trustee shall be under a duty
                  to examine the same to determine whether or not they conform
                  to the requirements of this Indenture;

            (b)  The Trustee shall not be liable for any error of judgment made
            in good faith by a Responsible Officer or Officers of the Trustee,
            unless it shall be proved that the Trustee was negligent in
            ascertaining the pertinent facts; and

            (c)   the Trustee shall not be liable with respect to any action
            taken or omitted to be taken by it in good faith





                                       53
<PAGE>   61
            in accordance with the direction of the holders of not less than a
            majority in principal amount of the Debentures at the time
            outstanding determined as provided in Section 10.04 relating to the
            time, method and place of conducting any proceeding for any remedy
            available to the Trustee, or exercising any trust or power
            conferred upon the Trustee, under this Indenture.

            None of the provisions contained in this Indenture shall require
the Trustee to expend or risk its own funds or otherwise incur personal
financial liability in the performance of any of its duties or in the exercise
of any of its right or powers, if there is reasonable ground for believing that
the repayment of such funds or liability is not reasonably assured to it.

            SECTION 9.02.  Reliance on Documents and Counsel.  Except as
otherwise provided in Section 9.01:

            (a)   The Trustee may rely and shall be protected in acting or
            refraining from acting upon any resolution, certificate, statement,
            instrument, opinion, report, notice, request, consent, order, bond,
            debenture, coupon, or other paper or document believed by it to be
            genuine and to have been signed or presented by the proper party or
            parties;

            (b)   Any request, direction, order or demand of the Company
            mentioned herein shall be sufficiently evidenced by an Officers'
            Certificate (unless other evidence in respect thereof be herein
            specifically prescribed); and any resolution of the Board of
            Directors of the Company may be evidenced to the Trustee by a copy
            thereof certified by the Secretary or an Assistant Secretary of the
            Company;

            (c)   The Trustee may consult with counsel and any written advice
            or Opinion of Counsel shall be full and complete authorization and
            protection in respect of any action taken or omitted by it
            hereunder in good faith and in accordance with such advice or
            Opinion of Counsel;

            (d)   The Trustee shall be under no obligation to exercise any of
            the rights or powers vested in it by this Indenture at the request,
            order or direction of any of the Debentureholders, pursuant to the
            provisions of this Indenture, unless such Debentureholders shall
            have offered to the Trustee reasonable security or indemnity
            against the costs, expenses and liabilities which may be incurred
            therein or thereby;





                                       54
<PAGE>   62
            (e)   The Trustee shall not be liable for any action taken or
            omitted by it in good faith and believed by it to be authorized or
            within the discretion or rights or powers conferred upon it by this
            Indenture;

            (f)   Prior to the occurrence of an Event of Default hereunder and
            after the curing of all Events of Default, the Trustee shall not be
            bound to make any investigation into the facts or matters stated in
            any resolution, certificate, statement, instrument, opinion,
            report, notice, request, consent, order, approval, appraisal, bond,
            debenture, coupon or other paper or document, unless requested in
            writing so to do by the holders of a majority in aggregate
            principal amount of the Debentures then outstanding determined
            subject to the provisions of Section 10.04; provided, that if the
            payment within a reasonable time to the Trustee of the costs,
            expenses or liabilities likely to be incurred by it in the making
            of such investigation is not, in the opinion of the Trustee,
            reasonably assured to the Trustee by the security afforded to it by
            the terms of this Indenture, the Trustee may require reasonable
            indemnity against such expense or liability as a condition to so
            proceeding; the reasonable expense of every such examination shall
            be paid by the Company or, if paid by the Trustee, shall be repaid
            by the Company upon demand; and

            (g)   The Trustee may execute any of the trusts or powers hereunder
            or perform any duties hereunder either directly or by or through
            agents or attorneys.  The Trustee shall not be responsible for any
            misconduct or negligence on the part of any agent or attorney
            appointed with due care by it hereunder.

            SECTION 9.03.  No Responsibility for Recitals or Certain Other
Matters.  The recitals contained herein and in the Debentures (except in the
Trustee's certificate of authentication) shall be taken as the statements of
the Company, and the Trustee assumes no responsibility for the correctness of
the same.  The Trustee makes no representations as to the validity or
sufficiency of this Indenture or of the Debentures.  The Trustee shall not be
accountable for the use or application by the Company of any Debentures or the
proceeds of any Debenture.

            SECTION 9.04.  Trustee, Paying Agent, Conversion Agent or Registrar
May Own Debentures.  The Trustee or any paying agent, conversion agent or
Debenture registrar, in its individual or any other capacity, may become the
owner or pledgee of Debentures with the same rights it would have if it were
not Trustee, paying agent, conversion agent or Debenture registrar.





                                       55
<PAGE>   63
            SECTION 9.05.  Monies to be Held in Trust.  Subject to the
provisions of Article Four and Section 14.04 hereof, all monies received by the
Trustee shall, until used or applied as herein provided, be held in trust for
the purposes for which they were received.  The Trustee shall be under no
liability for interest on any monies received by it hereunder except such as it
may agree with the Company to pay thereon.  Money held by the Trustee in trust
hereunder need not be segregated from other funds except to the extent required
by law.  So long as no Event of Default shall have occurred and be continuing,
all interest allowed on any such monies shall be paid from time to time upon
the written order of the Company, signed by its President or any Vice President
or its Treasurer or an Assistant Treasurer.

            SECTION 9.06.  Compensation and Expenses of Trustee.  The Company
covenants and agrees to pay to the Trustee from time to time, and the Trustee
shall be entitled to, reasonable compensation (which shall not be limited by
any provision of law in regard to the compensation of a trustee of an express
trust), and the Company will pay or reimburse the Trustee upon its request for
all reasonable expenses, disbursements and advances incurred or made by the
Trustee in accordance with any of the provisions of this Indenture (including
the reasonable compensation and the expense and disbursement of its counsel and
of all persons not regularly in its employ) except any such expenses,
disbursements or advance as may arise from its negligence or bad faith.  The
Company also covenants to indemnify the Trustee for, and to hold it harmless
against, any loss, liability or expense incurred without negligence or bad
faith on the part of the Trustee and arising out of or in connection with the
acceptance or administration of this trust, including the costs and expenses of
defending itself against any claim of liability in the premises.  The
obligations of the Company under this Section 9.06 to compensate the Trustee
and to pay or reimburse the Trustee for expenses, disbursements and advances
shall constitute additional indebtedness hereunder, and such additional
indebtedness shall be secured by a lien prior to that of the Debentures upon
all property and funds held or collected by the Trustee as such, except funds
held in trust for the payment of principal of or interest on Debentures.

            SECTION 9.07.  Officers' Certificate as Evidence.  Except as
otherwise provided in Section 9.01, whenever in the administration of the
provisions of this Indenture the Trustee shall deem it necessary or desirable
that a matter be proved or established prior to taking, suffering, or omitting
any action hereunder, such matter (unless other evidence in respect thereof be
herein specifically prescribed) may, in the absence of negligence or bad faith
on the part of the Trustee, be deemed to be conclusively proved and established
by an Officers' Certificate delivered to the Trustee, and such Certificate, in
the absence of





                                       56
<PAGE>   64
negligence or bad faith on the part of the Trustee, shall be full warrant to
the Trustee for any action taken or omitted by it under the provisions of this
Indenture upon the faith thereof.


            SECTION 9.08.  Conflicting Interest of the Trustee.

            (a)   If the Trustee has or shall acquire any conflicting interest,
            as defined in this Section 9.08, it shall, within ninety days after
            ascertaining that it has such conflicting interest, either
            eliminate such conflicting interest, or resign in the manner and
            with the effect specified in Section 9.10.

            (b)   In the event that the Trustee shall fail to comply with the
            provisions of subsection (a) of this Section 9.08, the Trustee
            shall, within ten days after the expiration of such ninety-day
            period, transmit notice of such failure by mail to all holders of
            Debentures, as the names and addresses of such holders appear upon
            the registration books of the Company.

            (c)   For the purposes of this Section 9.08, the Trustee shall be
            deemed to have a conflicting interest if

                  (1) the Trustee is trustee under another indenture under
                  which any other securities, or certificates of interest or
                  participation in any other securities, of the Company are
                  outstanding, unless such other indenture is a collateral
                  trust indenture under which the only collateral consists of
                  Debentures issued under this Indenture; provided, however,
                  that there shall be excluded from the operation of this
                  paragraph:  (A) the Indenture dated as of August 17, 1984
                  with Deposit Guaranty National Bank, as Trustee, under which
                  the Company's 1984-A Series Convertible Subordinated
                  Debentures are outstanding, (B) the Indenture dated as of
                  August 13, 1985 with Deposit Guaranty National Bank, as
                  Trustee, under which the Company's 1985-A Series Convertible
                  Subordinated Debentures are outstanding, (C) the Indenture
                  dated as of August 11, 1986 with Deposit Guaranty National
                  Bank, as Trustee, under which the Company's 1986-A Series
                  Convertible Subordinated Debentures are outstanding and (D)
                  the Indenture dated as of August 10, 1987 with Deposit
                  Guaranty National Bank, as Trustee, under which the Company's
                  1982-A, 1982-B, 1982-C, 1982-D, 1983-A, 1984-B and 1987-A
                  Series Convertible Subordinated Debentures are outstanding,
                  (E) the Indenture dated as of August 30, 1988 with Deposit
                  Guaranty National Bank as Trustee, under which





                                       57
<PAGE>   65
                  the Company's 1988-A Series Convertible Subordinated
                  Debentures are outstanding, (F) the Indenture dated as of
                  November 29, 1988 with Deposit Guaranty national Bank as
                  Trustee, under which the Company's 1988-1 Series Convertible
                  Subordinated Debentures are outstanding, (G) the Indenture
                  dated as of August 22, 1989 with Deposit Guaranty National
                  Bank as Trustee, under which the Company's 1989-A Series
                  Convertible Subordinated Debentures are outstanding, (H) the
                  Indenture dated as of August 22, 1989 with Deposit Guaranty
                  National Bank as Trustee, under which the Company's 1989-1
                  Series Convertible Subordinated Debentures are outstanding,
                  (I) the Indenture dated as of November 10, 1989 with Deposit
                  Guaranty National Bank as Trustee, under which the Company's
                  1989-2 Series Convertible Subordinated Debentures are
                  outstanding, (J) the Indenture dated as of August 27, 1990
                  with Deposit Guaranty National Bank as Trustee, under which
                  the Company's 1990-1 Series Convertible Subordinated
                  Debentures are outstanding, (K) the Indenture dated as of
                  November 9, 1990 with Deposit Guaranty National Bank as
                  Trustee, under which the Company's 1990-2 Series Convertible
                  Subordinated Debentures are outstanding, (L) the Indenture
                  dated as of August 27, 1991 with Deposit Guaranty National
                  Bank as Trustee, under which the Company's 1991-1 Series
                  Convertible Subordinated Debentures are outstanding, (M) the
                  Indenture dated as of November 15, 1991, with Deposit
                  Guaranty National Bank as Trustee, under which the Company's
                  1991-2 Series Convertible Subordinated Debentures are
                  outstanding, (N) the Indenture dated as of November 13, 1992,
                  with Deposit Guaranty National Bank as Trustee, under which
                  the Company's 1992-1 Series Convertible Subordinated
                  Debentures are outstanding, (O) any other indenture or
                  indentures under which other securities, or certificates of
                  interest or participation in other securities, of the Company
                  are outstanding if (i) this Indenture and such other
                  indenture or indentures are wholly unsecured and such other
                  indenture or indentures are hereafter qualified under the
                  Trust Indenture Act of 1939, unless the Securities and
                  Exchange Commission shall have found and declared by order
                  pursuant to subsection (b) of Section 305 or subsection (c)
                  of Section 307 of the Trust Indenture Act of 1939 that
                  differences exist between the provisions of this Indenture
                  and the provisions of such other indenture or indentures
                  which are so likely to involve a material conflict of
                  interest as to make it necessary in the public interest or
                  for the protection of investors to disqualify the Trustee
                  from acting as





                                       58
<PAGE>   66
                  such under this Indenture and such other indenture or
                  indentures, or (ii) the Company shall have sustained the
                  burden of proving, on application to the Securities and
                  Exchange Commission and after opportunity for hearing
                  thereon, that the trusteeship under this Indenture and such
                  other indenture is not so likely to involve a material
                  conflict of interest as to make it necessary in the public
                  interest or for the protection of investors to disqualify the
                  Trustee from acting as such under one of such indentures, or
                  (iii) such other indenture or indentures contain
                  substantially the same terms as this Indenture and such other
                  indenture or indentures and this Indenture are exempt from
                  qualification under the Trust Indenture Act of 1939.

                  (2)   The Trustee or any of its directors or executive
                  officers is an obligor upon the Debentures issued under this
                  Indenture or an underwriter for the Company;

                  (3)   the Trustee directly or indirectly controls or is
                  directly or indirectly controlled by or is under direct or
                  indirect common control with the Company or an underwriter
                  for the Company;

                  (4)   the Trustee or any of its directors or executive
                  officers is a director, officer, partner, employee,
                  appointee, or representative of the Company, or of an
                  underwriter (other than the Trustee itself) for the Company
                  who is currently engaged in the business of underwriting,
                  except that (A) one individual may be a director and/or an
                  executive officer of the Trustee and a director and/or an
                  executive officer of the Company, but may not be at the same
                  time an executive officer of both the Trustee and the
                  Company; (B) if and so long as the number of directors of the
                  Trustee in office is more than nine, one additional
                  individual may be a director and/or an executive officer of
                  the Trustee and a director of the Company; and (C) the
                  Trustee may be designated by the Company or by an underwriter
                  for the Company to act in the capacity of transfer agent,
                  registrar, custodian, paying agent, fiscal agent, escrow
                  agent, or depositary, or in any other similar capacity, or,
                  subject to the provisions of paragraph (1) of this subsection
                  (c), to act as trustee whether under an indenture or
                  otherwise;

                  (5)   ten per cent or more of the voting securities of
                  Trustee is beneficially owned either by the Company or by any
                  director, partner, or executive officer





                                       59
<PAGE>   67
                  thereof, or twenty per cent or more of such voting securities
                  is beneficially owned, collectively, by any two or more of
                  such persons; or ten per cent or more of the voting
                  securities of the Trustee is beneficially owned either by an
                  underwriter for the Company or by any director, partner, or
                  executive officer thereof, or is beneficially owned
                  collectively, by any two or more such persons;

                  (6)   the Trustee is the beneficial owner of, or holds
                  collateral security for an obligation which is in default,
                  (A) five per cent or more of the voting securities, or ten
                  per cent or more of any other class of security, of the
                  Company, not including the Debentures issued under this
                  Indenture and securities issued under any other indenture
                  under which the Trustee is also trustee, or (B) ten per cent
                  or more of any class of security of an underwriter for the
                  Company;

                  (7)   the Trustee is the beneficial owner of, or holds
                  collateral security for an obligation which is in default,
                  five per cent or more of the voting securities of any person
                  who, to the knowledge of the Trustee, owns ten per cent or
                  more of the voting securities of, or controls directly or
                  indirectly or is under direct or indirect common control
                  with, the Company;

                  (8)   the Trustee is the beneficial owner of, or holds
                  collateral security for an obligation which is in default,
                  ten per cent or more of any class of security of any person
                  who, to the knowledge of the Trustee, owns fifty per cent or
                  more of the voting securities of the Company; or

                  (9)   the Trustee owns on May 15 in any calendar year, in the
                  capacity of executor, administrator, testamentary or inter
                  vivos trustee, guardian, committee or conservator, or in any
                  other similar capacity, an aggregate of twenty-five per cent
                  or more of the voting securities, or of any class of
                  security, of any person, the beneficial ownership of a
                  specified percentage of which would have constituted a
                  conflicting interest under paragraph (6), (7) or (8) of this
                  subsection (c).  As to any such securities of which the
                  Trustee acquired ownership through becoming executor,
                  administrator or testamentary trustee of an estate which
                  included them, the provisions of the preceding sentence shall
                  not apply for a period of two years from the date of such
                  acquisition, to the extent





                                       60
<PAGE>   68
                  that such securities included in such estate do not exceed
                  twenty-five per cent of such voting securities or twenty-five
                  per cent of any such class of security.  Promptly after May
                  15 in each calendar year, the Trustee shall make a check of
                  its holdings of such securities in any of the above-mentioned
                  capacities as of such May 15.  If the Company fails to make
                  payment in full of principal of or interest on any of the
                  Debentures when and as the same become due and payable, and
                  such failure continues for thirty days thereafter, the
                  Trustee shall make a prompt check of its holdings of such
                  securities in any of the above-mentioned capacities as of the
                  date of the expiration of such thirty-day period, and after
                  such date, notwithstanding the foregoing provisions of this
                  paragraph (9), all such securities so held by the Trustee,
                  with sole or joint control over such securities vested in it,
                  shall, but only so long as such failure shall continue, be
                  considered as though beneficially owned by the Trustee for
                  the purposes of paragraphs (6), (7) and (8) of this
                  subsection (c).

            The specifications of percentages in paragraphs (5) to (9),
inclusive, of this subsection (c) shall not be construed as indicating that the
ownership of such percentages of the securities of a person is or is not
necessary or sufficient to constitute direct or indirect control for the
purposes of paragraph (3) or (7) of this subsection (c).

            For the purposes of paragraphs (6), (7), (8) and (9) of this
subsection (c) only, (A) the terms "security" and "securities" shall include
only such securities as are generally known as corporate securities, but shall
not include any note or other evidence of indebtedness issued to evidence an
obligation to repay monies lent to a person by one or more banks, trust
companies or banking firms, or any certificate of interest or participation in
any such note or evidence of indebtedness; (B) an obligation shall be deemed to
be in default when a default in payment of principal shall have continued for
thirty days or more and shall not have been cured; and (c) the Trustee shall
not be deemed to be the owner or holder of (i) any security which it holds as
collateral security (as trustee or otherwise) for an obligation which is not in
default as defined in clause (B) above, or (ii) any security which it holds as
collateral security under this Indenture, irrespective of any default
hereunder, or (iii) any security which it holds as agent for collection, or as
custodian, escrow agent, or depositary, or in any similar representative
capacity.

            Except as provided in the next preceding paragraph hereof, the word
"security" or "securities" as used in this Indenture





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shall mean any note, stock, treasury stock, bond, debenture, evidence of
indebtedness, certificate of interest or participation in any profit-sharing
agreement, collateral-trust certificate, pre-organization certificate or
subscription, transferable share, investment contract, voting-trust
certificate, certificate of deposit for a security, fractional undivided
interest in oil, gas or other mineral rights, or, in general, any interest or
instrument commonly known as a "security" or any certificate of interest or
participation in, temporary or interim certificate for, receipt for, guarantee
of, or warrant or right to subscribe to or purchase, any of the foregoing.

            (d)   For the purposes of this Section 9.08:

                  (1)   The term "underwriter" when used with reference to
                  Company shall mean every person who, within three years prior
                  to the time as of which the determination is made, has
                  purchased from the Company with a view to, or has offered or
                  sold for the Company in connection with, the distribution of
                  any security of the Company outstanding at such time, or has
                  participated or has had a direct or indirect participation in
                  any such undertaking, or has participated or has had a
                  participation in the direct or indirect underwriting of any
                  such undertaking, but such term shall not include a person
                  whose interest was limited to a commission from an
                  underwriter or dealer not in excess of the usual and
                  customary distributors' or sellers' commission.

                  (2)   The term "director" shall mean any director of a
                  corporation or any individual performing similar functions
                  with respect to any organization whether incorporated or
                  unincorporated.

                  (3)   The term "person" shall mean an individual, a
                  corporation, a partnership, an association, a joint-stock
                  company, a trust, an unincorporated organization, or a
                  government or political subdivision thereof.  As used in this
                  paragraph, the term "trust" shall include only a trust where
                  the interest or interests of the beneficiary or beneficiaries
                  are evidenced by a security.

                  (4)   The term "voting security" shall mean any security
                  presently entitling the owner or holder thereof to vote in
                  the direction or management of the affairs of a person, or
                  any security issued under or pursuant to any trust agreement
                  or arrangement whereby a trustee or trustees or agent or
                  agents for the owner or holder





                                       62
<PAGE>   70
                  of such security are presently entitled to vote in the
                  direction or management of the affairs of a person.

                  (5)   The term "Company" shall mean an obligor upon the
                  Debentures.

                  (6)   The term "executive officer" shall mean the president,
                  every vice president, every trust officer, the cashier, the
                  secretary, and the treasurer of a corporation, and any
                  individual customarily performing similar functions with
                  respect to any organization whether incorporated or
                  unincorporated, but shall not include the chairman of the
                  board of directors.

            (e)   The percentages of voting securities and other securities
            specified in this Section 9.08 shall be calculated in accordance
            with the following provisions:

                  (1)   A specified percentage of the voting securities of
                  Trustee, the Company or any other person referred to in this
                  Section 9.08 (each of whom is referred to as a "person" in
                  this paragraph) means such amount of the outstanding voting
                  securities of such person as entitles the holder or holders
                  thereof to cast such specified percentage of the aggregate
                  votes which the holders of all the outstanding voting
                  securities of such person are entitled to cast in the
                  direction or management of the affairs of such person.

                  (2)   A specified percentage of a class of securities of a
                  person means such percentage of the aggregate amount of
                  securities of the class outstanding.

                  (3)   The term "amount", when used in regard to securities
                  means the principal amount if relating to evidences of
                  indebtedness, the number of shares if relating to capital
                  shares, and the number of units if relating to any other kind
                  of security.

                  (4)   The term "outstanding" means issued and not held by or
                  for the account of the issuer.  The following securities
                  shall not be deemed outstanding within the meaning of this
                  definition:

                        (i)    Securities of an issuer held in a sinking fund
                        relating to securities of the issuer of the same class;

                        (ii) Securities of an issuer held in a sinking fund
                        relating to another class of securities of the issuer,
                        if the obligation evidenced by such





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<PAGE>   71
                        other class of securities is not in default as to
                        principal or interest or otherwise;

                        (iii) Securities pledged by the issuer thereof as
                        security for an obligation of the issuer not in default
                        as to principal or interest or otherwise; and

                        (iv) Securities held in escrow if placed in escrow by
                        the issuer thereof;

            provided, however, that any voting securities of an issuer shall be
            deemed outstanding if any person other than the issuer is entitled
            to exercise the voting rights thereof.

            (5)   A security shall be deemed to be of the same class as another
            security if both securities confer upon the holder or holders
            thereof substantially the same rights and privileges; provided,
            however, that, in the case of secured evidences of indebtedness,
            all of which are issued under a single indenture, differences in
            the interest rates or maturity dates of various series thereof
            shall not be deemed sufficient to constitute such series different
            classes; and provided further, that, in the case of unsecured
            evidences of indebtedness, differences in the interest rates or
            maturity dates thereof shall not be deemed sufficient to constitute
            them securities of different classes, whether or not they are
            issued under a single indenture.

            SECTION 9.09.  Eligibility of Trustee.   There shall at all times
be a Trustee hereunder which shall at all times be a corporation organized and
doing business under the laws of the United States or any State or Territory
thereof or of the District of Columbia authorized under such laws to exercise
corporate trust powers, having a combined capital and surplus of at least
$10,000,000, subject to supervision or examination by Federal, State,
Territorial, or District of Columbia authority.  If such corporation publishes
reports of condition at least annually, pursuant to law or to the requirements
of the aforesaid supervising or examining authority, then for the purposes of
this Section 9.09, the combined capital and surplus of such corporation shall
be deemed to be its combined capital and surplus as set forth in its most
recent report of condition so published.  In case at any time the Trustee shall
cease to be eligible in accordance with the provisions of this Section 9.09,
the Trustee shall resign immediately in the manner and with the effect
specified in Section 9.10.

                  SECTION 9.10.  Resignation or Removal of Trustee; Appointment
      of Successor Trustee .





                                       64
<PAGE>   72
            (a)   The Trustee may at any time resign by giving written notice
            of such resignation to the Company and by mailing notice thereof to
            the holders of the Debentures at their addresses as they shall
            appear on the registry books of the Company.  Upon receiving such
            notice of resignation, the Company shall promptly appoint a
            successor trustee by written instrument, in duplicate, executed by
            order of the Board of Directors of the Company, one copy of which
            instrument shall be delivered to the resigning Trustee and one copy
            to the successor trustee.  If no successor trustee shall have been
            so appointed and have accepted appointment within sixty days after
            the giving of such notice of resignation, the resigning Trustee may
            petition any court of competent jurisdiction for the appointment of
            a successor trustee, or any Debentureholder who has been a bona
            fide holder of a Debenture, or Debentures for at least six months
            may, subject to the provisions of Section 8.09, on behalf of
            himself and all other similarly situated, petition any such court
            for the appointment of a successor trustee.  Such court may
            thereupon, after such notice, if any, as it may deem proper and
            prescribe, appoint a successor trustee.

            (b)   In case at any time any of the following shall occur:

                  (1)   the Trustee shall fail to comply with the provisions of
                  subsection (a) of Section 9.08 after written request therefor
                  by the Company or by any Debentureholder who has been a bona
                  fide holder of a Debenture or Debentures for at least six
                  months, or

                  (2)   the Trustee shall cease to be eligible in accordance
                  with the provisions of Section 9.09 and shall fail to resign
                  after written request therefor by the Company or by any such
                  Debentureholder, or

                  (3)   the Trustee shall become incapable of acting, or shall
                  be adjudged a bankrupt or insolvent, or a receiver of the
                  Trustee or of its property shall be appointed, or any public
                  officer shall take charge or control of the Trustee or of its
                  property or affairs for the purpose of rehabilitation,
                  conservation or liquidation,

            then, in any such case, the Company may remove the Trustee and
            appoint a successor trustee by written instrument, in duplicate,
            executed by order of the Board of Directors of the Company, one
            copy of which instrument shall be delivered to the Trustee so
            removed and one copy to the successor trustee, or, subject to the
            provisions of Section 8.09, any Debentureholder who has been a bona
            fide





                                       65
<PAGE>   73
            holder of a Debenture or Debentures for at least six months may, on
            behalf of himself and all others similarly situated, petition any
            court of competent jurisdiction for the removal of the Trustee and
            the appointment of a successor trustee.  Such court may thereupon
            after such notice, if any, as it may deem proper and prescribe,
            remove the Trustee and appoint a successor trustee.

            (c)   The holders of a majority in aggregate principal amount of
            the Debentures at the time outstanding may at any time remove the
            Trustee and nominate a successor trustee which shall be deemed
            appointed as successor trustee unless within ten days after such
            nomination the Company shall object thereto, in which case the
            Trustee so removed or any Debentureholder, upon the terms and
            conditions and otherwise as in subdivision (a) of this Section 9.10
            provided, may petition any court of competent jurisdiction for an
            appointment of a successor trustee.

            (d)   No resignation or removal of the Trustee and appointment of a
            successor trustee pursuant to any of the provisions of this Section
            9.10 shall be effective until acceptance of appointment by the
            successor trustee as provided in Section 9.11.

            SECTION 9.11.  Acceptance by Successor Trustee.   Any successor
trustee appointed as provided in Section 9.10 shall execute, acknowledge and
deliver to the Company and to its predecessor trustee an instrument accepting
such appointment hereunder, and thereupon the resignation or removal of the
predecessor trustee shall become effective and such successor trustee, without
any further act, deed or conveyance, shall become vested with all the rights,
powers, duties and obligations of its predecessor hereunder, with like effect
as if originally named as trustee herein; but, nevertheless, on the written
request of the Company or of the successor trustee, the trustee ceasing to act
shall, upon payment of any amounts then due it pursuant to the provisions of
Section 9.06, execute and deliver an instrument transferring to such successor
trustee all the rights and powers of the trustee so ceasing to act.  Upon
request of any such successor trustee, the Company shall execute any and all
instruments in writing for more fully and certainly vesting in and confirming
to such successor trustee all such rights and powers.  Any trustee ceasing to
act shall, nevertheless, retain a lien upon all property or funds held or
collected by such trustee to secure any amounts then due it pursuant to the
provisions of Section 9.06.

            No successor trustee shall accept appointment as provided in this
Section 9.11 unless at the time of such acceptance such





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<PAGE>   74
successor trustee shall be qualified under the provisions of Section 9.08 and
eligible under the provisions of Section 9.09.

            Upon acceptance of appointment by a successor trustee as provided
in this Section 9.11, the Company shall mail notice of the succession of such
trustee hereunder to the holders of Debentures at their addresses as they shall
appear on the registry books of the Company.  If the Company fails to mail such
notice within ten days after acceptance of appointment by the successor
trustee, the successor trustee shall cause such notice to be mailed at the
expense of the Company.

            SECTION 9.12.  Succession by Merger and Certain Other Events.  Any
corporation into which the Trustee may be merged or converted or with which it
may be consolidated, or any corporation resulting from any merger, conversion
or consolidation to which the Trustee shall be a party, or any corporation
succeeding to the business of the Trustee, shall be the successor of the
Trustee hereunder without the execution or filing of any paper or any further
act on the part of any of the parties hereto.

            In case at the time such successor to the Trustee shall succeed to
the trusts created by this Indenture any of the Debentures shall have been
authenticated but not delivered, any such successor to the Trustee may adopt
the certificate of authentication of any predecessor trustee and deliver such
Debentures so authenticated; and in case at that time any of the Debentures
shall not have been authenticated, any successor to the Trustee may
authenticate such Debentures either in the name of any predecessor trustee
hereunder or in the name of such successor to the Trustee; and in all such
cases such certificates shall have the full force which it is anywhere in the
Debentures or in this Indenture provided that the certificate of the Trustee
shall have; provided, however, that the right to adopt the certificate of
authentication of any predecessor trustee or authenticate Debentures in the
name of any predecessor trustee shall apply only to its successor or successors
by merger, conversion or consolidation.

            SECTION 9.13.  Limitation on Rights of Trustee as a Creditor.

            (a)   Subject to the provisions of subsection (b) of this Section
            9.13, if the Trustee shall be or shall become a creditor, directly
            or indirectly, secured or unsecured, of the Company or of any other
            obligor on the Debentures within four months prior to a default, as
            defined in subsection (c) of this Section 9.13, or subsequent to
            such a default, then, unless and until such default shall be cured,
            the Trustee shall set apart and hold in a special account for the
            benefit of the Trustee individually, the





                                       67
<PAGE>   75
            holders of the Debentures, and the holders of other indenture
            securities (as defined in subsection (c) of this Section 9.13):

                  (1)   an amount equal to any and all reductions in the amount
                  due and owing upon any claim as such creditor in respect of
                  principal or interest, effected after the beginning of such
                  four months' period and valid as against the Company and its
                  other creditors, except any such reduction resulting from the
                  receipt or disposition of any property described in paragraph
                  (2) of this subsection, or from the exercise of any right of
                  set-off which the Trustee could have exercised if a petition
                  in bankruptcy had been filed by or against the Company upon
                  the date of such default; and

                  (2)   all property received by the Trustee in respect of any
                  claim as such creditor, either as security therefor, or in
                  satisfaction or composition therefor, or otherwise, after the
                  beginning of such four months' period, or an amount equal to
                  the proceeds of any such property, if disposed of, subject,
                  however, to the rights, if any, of the Company and its other
                  creditors in such property or such proceeds.

            Nothing herein contained, however, shall affect the right of the
            Trustee:

                  (A)   to retain for its own account (i) payments made on
                  account of any such claim by any person (other than the
                  Company) who is liable thereon, and (ii) the proceeds of the
                  bona fide sale of any such claim by the Trustee to a third
                  person, and (iii) distributions made in cash, securities or
                  other property in respect of claims filed against the Company
                  in bankruptcy or receivership or in proceedings for
                  reorganization pursuant to the federal bankruptcy laws, as
                  now or hereafter constituted, or other applicable federal or
                  state law;

                  (B)   to realize, for its own account, upon any property held
                  by it as security for any such claim if such property was so
                  held prior to the beginning of such four months' period;

                  (C)   to realize, for its own account, but only to the extent
                  of the claim hereinafter mentioned, upon any property held by
                  it as security for any such claim, if such claim was created
                  after the beginning of such four months' period and such
                  property was received as security therefor simultaneously
                  with the creation





                                       68
<PAGE>   76
                  thereof, and if the Trustee shall sustain the burden of
                  proving that at the time such property was so received the
                  Trustee had no reasonable cause to believe that a default, as
                  defined in subsection (c) of this Section 9.13, would occur
                  within four months; or

                  (D)   to receive payment on any claim referred to in
                  paragraph (B) or (C), against the release of any property
                  held as security for such claim as provided in such paragraph
                  (B) or (C), as the case may be, to the extent of the fair
                  value of such property.

            For the purposes of paragraphs (B), (C), and (D), property
substituted after the beginning of such four months' period for property held
as security at the time of such substitution shall, to the extent of the fair
value of the property released, have the same status as the property released,
and, to the extent that any claim referred to in any of such paragraphs is
created in renewal of or in substitution for or for the purpose of repaying or
refunding any pre-existing claim of the Trustee as such creditor, such claim
shall have the same status as such pre-existing claim.

            If the Trustee shall be required hereunder to maintain a special
account, the funds and property held in such special account and the proceeds
thereof shall be apportioned between the Trustee, the Debentureholders and the
holders of other indenture securities in such manner that the Trustee, the
Debentureholders and the holders of other indenture securities realize, as a
result of payments from such special account and payments of dividends on
claims filed against the Company in bankruptcy or receivership or in
proceedings for reorganization pursuant to the federal bankruptcy laws, as now
or hereafter constituted, or other applicable federal or state law, the same
percentage of their respective claims, figured before crediting to the claim of
the Trustee anything on account of the receipt by it from the Company of the
funds and property in such special account and before crediting to the
respective claims of the Trustee, the Debentureholders and the holders of other
indenture securities dividends on claims filed against the Company in
bankruptcy or receivership or in proceedings for reorganization pursuant to the
federal bankruptcy laws, as now or hereafter constituted, or other applicable
federal or state law, but after crediting thereon receipts on account of the
indebtedness represented by their respective claims from all sources other than
from such dividends and from the funds and property so held in such special
account.  As used in this paragraph, with respect to any claim, the term
"dividends" shall include any distribution with respect to such claim, in
bankruptcy or receivership or in proceedings for reorganization pursuant to the
federal bankruptcy laws, as now or hereafter constituted; or other applicable
federal or state law,





                                       69
<PAGE>   77
whether such distribution is made in cash, securities, or other property, but
shall not include any such distribution with respect to the secured portion, if
any, of such claim.  The court in which such bankruptcy, receivership, or
proceeding for reorganization is pending shall have jurisdiction (i) to
apportion between the Trustee, the Debentureholders, and the holders of other
indenture securities, in accordance with the provisions of this paragraph, the
funds and property held in such special account and the proceeds thereof, or
(ii) in lieu of such apportionment, in whole or in part, to give to the
provisions of this paragraph due consideration in determining the fairness of
the distributions to be made to the Trustee, the Debentureholders and the
holders of other indenture securities with respect to their respective claims,
in which event it shall not be necessary to liquidate or to appraise the value
of any securities or other property held in such special account or as security
for any claim, or to make a specific allocation of such distributions as
between the secured and unsecured portions of such claims, or otherwise to
apply the provisions of this paragraph as a mathematical formula.

            Any trustee who has resigned or been removed after the beginning of
such four months' period shall be subject to the provisions of this subsection
(a) as though such resignation or removal had not occurred.  If any Trustee has
resigned or been removed prior to the beginning of such four months' period, it
shall be subject to the provisions of this subsection (a) if and only if the
following conditions exist:

                  (i)   the receipt of property or reduction of claim which
                  would have given rise to the obligation to account, if such
                  Trustee had continued as trustee, occurred after the
                  beginning of such four months' period; and

                  (ii) such receipt of property or reduction of claim occurred
                  within four months after such resignation or removal.

            (b)   There shall be excluded from the operation of subsection (a)
            of this Section 9.13 a creditor relationship arising from:

                  (1)   The ownership or acquisition of securities issued under
                  any indenture, or any security or securities having a
                  maturity of one year or more at the time of acquisition by
                  the Trustee;

                  (2)   advances authorized by a receivership or bankruptcy
                  court of competent jurisdiction, or by this Indenture, for
                  the purpose of preserving any property which shall at any
                  time be subject to the lien of this





                                       70
<PAGE>   78
                  Indenture or of discharging tax liens or other prior liens or
                  encumbrances thereon, if notice of such advance and of the
                  circumstances surrounding the making thereof is given to the
                  Debentureholders at the time and in the manner provided in
                  Section 7.04 with respect to reports pursuant to subsections
                  (a) and (b) thereof, respectively;

                  (3)   disbursements made in the ordinary course of business
                  in the capacity of trustee under an indenture, transfer
                  agent, registrar, custodian, paying agent, fiscal agent or
                  depositary, or other similar capacity;

                  (4)   an indebtedness created as a result of services
                  rendered or premises rented; or an indebtedness created as a
                  result of goods or securities sold in a cash transaction as
                  defined in subsection (c) of this Section 9.13;

                  (5)   the ownership of stock or of other securities of a
                  corporation organized under the provisions of Section 25(a)
                  of the Federal Reserve Act, as amended, which is directly or
                  indirectly a creditor of the Company; or

                  (6)   the acquisition, ownership, acceptance or negotiation
                  of any drafts, bills of exchange, acceptances or obligations
                  which fall within the classification of self-liquidating
                  paper as defined in subsection (c) of this Section 9.13.

            (c)   As used in this Section 9.13:

                  (1)   The term "default" shall mean any failure to make
                  payment in full of the principal of or interest upon any of
                  the Debentures or upon the other indenture securities when
                  and as such principal or interest becomes due and payable;


                  (2)   The term "other indenture securities" shall mean
                  securities upon which the Company is an obligor (as defined
                  in the Trust Indenture Act of 1939) outstanding under any
                  other indenture (A) under which the Trustee is also trustee,
                  (B) which contains provisions substantially similar to the
                  provisions of subsection (a) of this Section 9.13, and (C)
                  under which a default exists at the time of the apportionment
                  of the funds and property held in said special account;





                                       71
<PAGE>   79
                  (3)   The term "cash transaction" shall mean any transaction
                  in which full payment for goods or securities sold is made
                  within seven days after delivery of the goods or securities
                  in currency or in checks or other orders drawn upon banks or
                  bankers and payable upon demand;


                  (4)   The term "self-liquidating paper" shall mean any draft,
                  bill of exchange, acceptance or obligation which is made,
                  drawn, negotiated or incurred by the Company for the purpose
                  of financing the purchase, processing, manufacture, shipment,
                  storage or sale of goods, wares or merchandise and which is
                  secured by documents evidencing title to, possession of, or a
                  lien upon, the goods, wares or merchandise or the receivables
                  or proceeds arising from the sale of goods, wares or
                  merchandise previously constituting the security, provided
                  the security is received by the Trustee simultaneously with
                  the creation of the creditor relationship with the Company
                  arising from the making, drawing, negotiating or incurring of
                  the draft, bill of exchange, acceptance or obligation; and


                  (5)   The term "Company" shall mean any obligor upon the
                  Debentures.


            SECTION 9.14.  Records of Trustee.  The Trustee shall retain
in its possession so long as any of the Debentures shall remain outstanding all
financial statements furnished to it pursuant to this Indenture.  The Trustee
shall at all times have access to those books and records of the Company which
may be reasonably required by the Trustee to fulfill its duties and obligations
hereunder, except that no such access shall be allowed to any books or records
constituting restricted security information under any law or governmental
regulation at the time applicable thereto.

                                  ARTICLE TEN

                        CONCERNING THE DEBENTUREHOLDERS

            SECTION 10.01.    Action by Debentureholders.  Whenever in this
Indenture it is provided that the holders of a specified percentage in
aggregate principal amount of the Debentures may take any action (including the
making of any demand or request, the giving of any notice, consent or waiver or
the taking of any other action) the fact that at the time of taking any such
action the holders of such specified percentage have joined therein may





                                       72
<PAGE>   80
be evidenced (a) by any instrument or any number of instruments of similar
tenor executed by Debentureholders in person or by agent or proxy appointed in
writing, or (b) by the record of the holders of Debentures voting in favor
thereof at any meeting of Debentureholders duly called and held in accordance
with the provisions of Article Eleven, or (c) by a combination of such
instrument or instruments and any such record of such a meeting of
Debentureholders.

            SECTION 10.02. Proof of Execution by Debentureholders; Evidence of
Holdings.  Subject to the provisions of Section 9.01 and 11.05, proof of the
fact and date of execution of any instrument by a Debentureholder or his agent
or proxy and proof of the holding by any person of any of the Debentures shall
be sufficient for any purpose of this Indenture and conclusive in favor of the
Trustee and the Company if made in the following manner:

            (a)   The fact and date of the execution by any such person of any
            instrument may be proved by the certificate of any notary public or
            other officer of any jurisdiction authorized to take
            acknowledgments of deeds or administer oaths that the person
            executing such instrument acknowledged to him the execution
            thereof, or by an affidavit of a witness to such execution sworn to
            before any such notary or other such officer and where such
            execution is by an officer of a corporation or association or a
            member of a partnership, on behalf of such corporation, association
            or partnership, such certificate or affidavit shall also constitute
            sufficient proof of his authority.

            (b)   The ownership of Debentures shall be proved by the registers
            of such Debentures or by a certificate of the registrar thereof.

            The record of any Debentureholders' meeting shall be proved in the
manner provided in Section 11.06.  The Trustee may require such additional
proof of any matter referred to in this Section 10.02 as it shall deem
necessary.


            SECTION 10.03.  Who Deemed Absolute Owners.   The Company, the
Trustee, any paying agent, any conversion agent and any Debenture registrar may
deem and treat the person in whose name any Debenture shall be registered upon
the books of the Company as the absolute owner of such Debenture (whether or
not such Debenture shall be overdue and notwithstanding any notation of
ownership or writing thereon by anyone other than the Company or any Debenture
registrar) for the purpose of receiving payment of or on account of the
principal of and interest on such Debenture





                                       73
<PAGE>   81
and for all other purposes; and neither the Company nor the Trustee nor any
paying agent nor any conversion agent nor any Debenture registrar shall be
affected by any notice to the contrary.  Payment of or on account of the
principal of and (subject to the provisions of Section 2.03) interest on such
Debenture shall be made only to or upon the order in writing of the registered
holder thereof.  All such payments and all such conversions shall be valid,
and, to the extent of the sum or sums so paid, effectual to satisfy and
discharge the liability for monies payable upon any such Debenture.


            SECTION 10.04.  Company-owned Debentures Disregarded.   In
determining whether the holders of the requisite aggregate principal amount of
Debentures have concurred in any direction or consent under this Indenture,
Debentures which are owned by the Company or any other obligor on the
Debentures or by any person directly or indirectly controlling or controlled by
or under direct or indirect common control with the Company or any other
obligor on the Debentures shall be disregarded and deemed not to be outstanding
for the purpose of any such determination; provided that for the purposes of
determining whether the Trustee shall be protected in relying on any such
direction or consent only Debentures which the Trustee knows are so owned shall
be so disregarded.  The Company shall, immediately upon issuance of the
Debentures, provide the Trustee with an Officers' Certificate and an Opinion of
Counsel specifying which Debentures are so owned and that no other Debentures
are so owned.  The Company shall provide further Officers' Certificates and
Opinions of Counsel as necessary to reflect changes in such information.
Debentures so owned which have been pledged in good faith may be regarded as
outstanding for the purposes of this Section 10.04, if the pledgee shall
establish to the satisfaction of the Trustee the pledgee's right to vote such
Debentures and that the pledgee is not a person directly or indirectly
controlling or controlled by or under direct or indirect common control with
the Company or any such other obligor.  In case of a dispute as to such right,
any decision by the Trustee taken upon the advice of counsel shall be full
protection to the Trustee.

            SECTION 10.05.  Revocation of Consents; Future Holders Bound.   At
any time prior to (but not after) the evidencing to the Trustee, as provided in
Section 10.01, of the taking of any action by the holders of the percentage in
aggregate principal amount of the Debentures specified in this Indenture in
connection with such action, any holder of a Debenture which is included in the
Debentures the holders of which have consented to such action may, by filing
written notice with the Trustee at its office and upon proof of holding as
provided in Section 10.02, revoke such action so far as concerns such holder's
Debenture.  Absent a proper revocation, any consent to an action given by the
holder of





                                       74
<PAGE>   82
any Debenture shall be conclusive and binding upon such holder and upon all
future holders and owners of such Debenture, irrespective of whether or not any
notation in regard thereto is made upon such Debenture or any Debenture issued
in exchange or substitution therefor.  Any action taken by the holders of the
percentage in aggregate principal amount of the Debentures specified in this
Indenture in connection with such action shall be conclusively binding upon the
Company, the Trustee and the holders of all the Debentures.


            SECTION 10.06.  Transfer of Debentures.   Except as provided
herein, the Debentures may not be sold, assigned, transferred, pledged or
otherwise hypothecated.  A Debentureholder may pledge or hypothecate a
Debenture for the purpose of borrowing money to buy the Debenture provided that
the Company consents in writing to such intended pledge or hypothecation prior
to consummation of such pledge or hypothecation.  Any such consent shall be
substantially in the form attached hereto as Exhibit A.  Upon giving such
consent, the Company shall furnish to the Trustee and any conversion agent an
Officers' Certificate which shall identify the Debentures covered by such
consent by stating the serial number, name of registered holder and principal
amount of such Debentures.  The duly authorized representative of the estate of
a deceased Debentureholder may request that a Debenture held in that estate be
registered in the name of the person or persons to whom such Debenture passed
by will or the laws of intestate succession, provided that such representative
shall have supplied proof satisfactory to the Company and the Trustee of his
authority, and of any other matters which the Trustee or the Company may deem
relevant.  A person who has foreclosed on a pledge or hypothecation on a
Debenture made in compliance with this Section 10.06 may request that such
Debenture be registered in the name of such person.  As used herein, the term
"person" shall include any corporation, bank, savings and loan association,
partnership and similar business entities.


                                 ARTICLE ELEVEN

                           DEBENTUREHOLDERS' MEETINGS

            SECTION 11.01.   Purpose of Meetings.   A meeting of
Debentureholders may be called at any time from time to time pursuant to the
provisions of this Article Eleven for any of the following purposes:

                  (1)   to give any notice to the Company or to the Trustee, or
                  to give any directions to the Trustee, or to consent to the
                  waiving of any default hereunder and its consequences, or to
                  take any other action





                                       75
<PAGE>   83
                  authorized to be taken by Debentureholders pursuant to any of
                  the provisions of Article Eight;

                  (2)   to remove the Trustee and nominate a successor trustee
                  pursuant to the provisions of Article Nine;

                  (3)   to consent to the execution of an indenture or
                  indentures supplemental hereto pursuant to the provisions of
                  Section 12.02; or

                  (4)   to take any other action authorized to be taken by or
                  on behalf of the holders of any specified aggregate principal
                  amount of the Debentures under any other provision of this
                  Indenture or under applicable law.

            SECTION 11.02.  Call of Meetings by Trustee.   The Trustee may at
any time call a meeting of Debentureholders to take any action specified in
Section 11.01, to be held at such time and at such place in the City of
Jackson, Mississippi, as the Trustee shall determine.  Notice of every meeting
of the Debentureholders, setting forth the time and the place of such meeting
and in general terms the action proposed to be taken at such meeting, shall be
mailed to the holders of Debentures at their addresses as they shall appear on
the registry books of the Company.  Such notice shall be mailed not less than
twenty nor more than one hundred and eighty days prior to the date fixed for
the meeting.

            SECTION 11.03.  Call of Meetings by Company or Debentureholders.
In case at any time the Company, pursuant to a resolution of its Board of
Directors, or the holders of at least ten per cent in aggregate principal
amount of the Debentures then outstanding, shall have requested the Trustee to
call a meeting of Debentureholders, by written request setting forth in
reasonable detail the action proposed to be taken at the meeting, and the
Trustee shall not have mailed the notice of such meeting within twenty days
after receipt of such request, then the Company or such Debentureholders may
determine the time and the place in the City of Jackson, Mississippi, for such
meeting and may call such meeting to take any action authorized in Section
11.01, by mailing notice thereof as provided in Section 11.02.

            SECTION 11.04.  Qualifications for Voting.   To be entitled to vote
at any meeting of Debentureholders a person shall (a) be a holder of one or
more Debentures; or (b) be a person appointed by an instrument in writing as
proxy by a holder of one or more Debentures.  The only persons who shall be
entitled to be present or to speak at any meeting of Debentureholders shall be
the persons entitled to vote at such meeting and their counsel and any
representatives of the Trustee and its counsel and any representatives of the
Company and its counsel.





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<PAGE>   84
            SECTION 11.05.  Regulations.   Notwithstanding any other provisions
of this Indenture, the Trustee may make such reasonable regulations as it may
deem advisable for any meeting of Debentureholders, in regard to proof of the
holding of Debentures and of the appointment of proxies, and in regard to the
appointment and duties of inspectors of votes, the submission and examination
of proxies and other evidence of the right to vote, and such other matters
concerning the conduct of the meetings as it shall think fit.

            The Trustee shall, by an instrument in writing, appoint a temporary
chairman of the meeting, unless the meeting shall have been called by the
Company or by Debentureholders as provided in Section 11.03, in which case the
Company or the Debentureholders calling the meeting, as the case may be, shall
in like manner appoint a temporary chairman.  A permanent chairman and a
permanent secretary of the meeting shall be elected by majority vote of the
meeting.

            Subject to the provisions of Section 10.04, at any meeting each
Debentureholder or proxy shall be entitled to one vote (and/or fraction
thereof) for each $50.00 principal amount of Debentures (and/or fraction
thereof) held or represented by him; provided, however, that no vote shall be
cast or counted at any meeting in respect of any Debenture challenged as not
outstanding and ruled by the chairman of the meeting to be not outstanding.
The chairman of the meeting shall have no right to vote other than by virtue of
Debentures held by him or instruments in writing as aforesaid duly designating
him as the person to vote on behalf of other Debentureholders.

            At any meeting of Debentureholders, the presence of persons holding
or representing Debentures in an aggregate principal amount sufficient under
the appropriate provisions of this Indenture to take action upon the business
for the transaction of which such meeting was called shall constitute a quorum.
Any meeting of Debentureholders duly called pursuant to the provisions of
Section 11.02 or 11.03 may be adjourned from time to time by vote of the
holders (or proxies for the holders) of a majority of Debentures represented at
the meeting and entitled to vote, whether or not constituting a quorum, and the
meeting may be held as so adjourned without further notice.

            SECTION 11.06.  Voting.   The vote upon any resolution submitted to
any meeting of Debentureholders shall be by written ballots on which shall be
subscribed the signatures of the holders of Debentures or of their
representatives by proxy and the serial number or numbers of the Debentures
held or represented by them.  The permanent chairman of the meeting shall
appoint two inspectors of votes who shall count all votes cast at the meeting
for or against any resolution and who shall make and file with the





                                       77
<PAGE>   85
secretary of the meeting their verified written reports in duplicate for all
votes cast at the meeting.  A record in duplicate of the proceedings of each
meeting of Debentureholders shall be prepared by the secretary of the meeting
and there shall be attached to said record the original reports of the
inspectors of votes on any vote by ballot taken thereat and affidavits by one
or more persons having knowledge of the facts setting forth a copy of the
notice of the meeting and showing that said notice was mailed as provided in
Section 11.02.  The record shall be signed and verified by the affidavits of
the permanent chairman and secretary of the meeting, and one of the duplicates
shall be delivered to the Company and the other to the Trustee to be preserved
by the Trustee.

            Any record so signed and verified shall be conclusive evidence of
the matters therein stated.

            SECTION 11.07.  No Delay of Rights by Meeting.   Nothing in this
Article Eleven contained shall be deemed or construed to authorize or permit,
by reason of any call of a meeting of Debentureholders or any rights expressly
or impliedly conferred hereunder to make such call, any hindrance or delay in
the exercise of any right or rights conferred upon or reserved to the Trustee
or to the Debentureholders under any of the provisions of this Indenture or of
the Debentures.


                                 ARTICLE TWELVE

                            SUPPLEMENTAL INDENTURES

            SECTION 12.01.  Supplemental Indentures without Consent of
Debentureholders.   The Company, when authorized by resolution of its Board of
Directors, and the Trustee may from time to time and at any time enter into an
indenture or indentures supplemental hereto for one or more of the following
purposes:

            (a)   to make provision with respect to the conversion rights of
            holders of Debentures pursuant to the requirements of Section 5.09;

            (b)   to evidence the succession of another corporation to the
            Company, or successive successions, and the assumption by the
            successor corporation of the covenants, agreements and obligations
            of the Company pursuant to Article Thirteen hereof;

            (c)   to add to the covenants of the Company such further
            covenants, restrictions or conditions for the protection of the
            holders of the Debentures as the Board of Directors of the Company
            and the Trustee shall consider to be for





                                       78
<PAGE>   86
            the protection of the holders of Debentures, and to make the
            occurrence, or the occurrence and continuance, of a default in any
            of such additional covenants, restrictions or conditions a default
            or an Event of Default permitting the enforcement of all or any of
            the several remedies provided in this Indenture as herein set
            forth; provided, however, that in respect of any such additional
            covenant, restriction or condition such supplemental indenture may
            provide for a particular period of grace after default (which
            period may be shorter or longer than that allowed in the case of
            other defaults) or may provide for an immediate enforcement upon
            such default or may limit the remedies available to the Trustee
            upon such default;

            (d)   to provide for the issuance under this Indenture of
            Debentures in coupon form (including Debentures registrable as to
            principal only), but otherwise with all the provisions and subject
            to all the conditions and limitations of the Debentures issued
            hereunder in fully registered form, and to provide for
            exchangeability of such Debentures with the Debentures issued
            hereunder in fully registered form; and

            (e)   to cure any ambiguity or to correct or supplement any
            provision contained herein or in any supplemental indenture which
            may be defective or inconsistent with any other provision contained
            herein or in any supplemental indenture, or to make such other
            provisions in regard to matters or questions arising under this
            Indenture which shall not be inconsistent with the provisions of
            this Indenture, provided such action pursuant to this clause (e)
            shall not adversely affect the interests of the holders of the
            Debentures.

            (f)   to modify, eliminate, or add to the provisions of this
            Indenture to such extent as may be necessary to effect the
            qualification of this Indenture under the Trust Indenture Act, or
            under any similar federal statute hereafter enacted, if such
            qualification is or becomes necessary or desirable, and to add to
            this Indenture such other provisions as may be expressly permitted
            by the Trust Indenture Act, excluding, however, the provisions
            referred to in Section 316(a)(2) of the Trust Indenture Act as in
            effect at the date as of which this instrument was executed, or any
            corresponding provision in any similar federal statute hereafter
            enacted.

            The Trustee is hereby authorized to join with the Company in the
execution of any such supplemental indenture, to make any further appropriate
agreements and stipulations which may be therein contained and to accept the
conveyance, transfer and





                                       79
<PAGE>   87
assignment of any property thereunder, but the Trustee shall not be obligated
to enter into any such supplemental indenture which affects the Trustee's own
rights, duties or immunities under this Indenture or otherwise.

            Any supplemental indenture authorized by the provisions of this
Section 12.01 may be executed by the Company and the Trustee without the
consent of the holders of any of the Debentures at the time outstanding,
notwithstanding any of the provisions of Section 12.02.

            SECTION 12.02.  Supplemental Indentures with Consent of
Debentureholders.   With the consent (evidenced as provided in Section 10.01)
of the holders of not less than sixty-six and two-thirds per cent in aggregate
principal amount of the Debentures at the time outstanding, the Company, when
authorized by resolution of its Board of Directors, and the Trustee may from
time to time and at any time enter into an indenture or indentures supplemental
hereto for the purpose of adding any provisions to or changing in any manner or
eliminating any of the provisions of this Indenture or of any supplemental
indenture or of modifying in any manner the rights of the holders of the
Debentures; provided, however, that no such supplemental indenture shall (i)
extend the fixed maturity of any Debentures, or reduce the rate or extend the
time of payment of interest thereon, or reduce the principal amount thereof, or
change any place of payment where, or the coin or currency in which, any
Debenture or the interest thereon, is payable, or modify the provisions of this
Indenture with respect to the subordination of the Debentures in a manner
adverse to the Debentureholders, or impair the right to convert the Debentures
into 1994-1 Series Stock on the terms set forth herein (except as permitted by
Section 12.01(a)), without the consent of the holder of each Debenture so
affected, or (ii) reduce the aforesaid percentage of Debentures, the holders of
which are required to consent to any such supplemental indenture, without the
consent of the holders of all Debentures then outstanding.

            Upon the request of the Company, accompanied by a copy of the
resolutions of its Board of Directors certified by its Secretary or Assistant
Secretary authorizing the execution of any such supplemental indenture, and
upon the filing with the Trustee of evidence of the consent of Debentureholders
as aforesaid, the Trustee shall join with the Company in the execution of such
supplemental indenture unless such supplemental indenture affects the Trustee's
own rights, duties or immunities under this Indenture or otherwise, in which
case the Trustee may in its discretion, but shall not be obligated to, enter
into such supplemental indenture.

            Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to this Section





                                       80
<PAGE>   88
12.02, the Company, at its cost and expense, shall mail a notice, setting forth
in general terms the substance of such supplemental indenture, to all
Debentureholders of record as of the date of such supplemental indenture.


            It shall not be necessary for the consent of the Debentureholders
under this Section 12.02 to approve the particular form of any proposed
supplemental indenture, but it shall be sufficient if such consent shall
approve the substance thereof.


            SECTION 12.03.  Compliance with Trust Indenture Act; Effect of
Supplemental Indentures.   Any supplemental indenture executed pursuant to the
provisions of this Article Twelve shall comply with the Trust Indenture Act of
1939 as in effect on the date of execution thereof if such compliance is
necessary or is determined by the Company to be desirable.  Upon the execution
of any supplemental indenture pursuant to the provisions of this Article
Twelve, this Indenture shall be and be deemed to be modified and amended in
accordance therewith and the respective rights, limitation of rights,
obligations, duties and immunities under this Indenture of the Trustee, the
Company and the holders of Debentures shall thereafter be determined, exercised
and enforced hereunder subject in all respects to such modifications and
amendments, and all the terms and conditions of any such supplemental indenture
shall be and be deemed to be part of the terms and conditions of this Indenture
for any and all purposes.


            SECTION 12.04.  Notation on Debentures.   Debentures authenticated
and delivered after the execution of any supplemental indenture pursuant to the
provisions of this Article Twelve may bear a notation in form approved by the
Trustee as to any matter provided for in such supplemental indenture.  If the
Company or the Trustee shall so determine, new Debentures so modified as to
conform, in the opinion of the Trustee and the Board of Directors of the
Company, to any modifications of this Indenture contained in any such
supplemental indenture may be prepared and executed by the Company,
authenticated by the Trustee and delivered in exchange for the Debentures then
outstanding.


            SECTION 12.05.  Evidence of Compliance of Supplemental Indenture to
be Furnished Trustee.   The Trustee, subject to the provisions of Sections 9.01
and 9.02, shall be entitled to receive and rely upon an Officers' Certificate
and an Opinion of Counsel as conclusive evidence that any supplemental
indenture executed pursuant hereto complies with the requirements of this
Indenture.





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<PAGE>   89
                                ARTICLE THIRTEEN

                 CONSOLIDATION, MERGER AND SALE BY THE COMPANY

            SECTION 13.01.  Consolidation, Merger or Sale of Assets Permitted.
The Company covenants that it will not merge or consolidate with any other
corporation or sell or convey all or substantially all of its assets to any
person, firm or corporation, (i) unless either (a) the Company shall be the
continuing corporation, or (b) the successor (if other than the Company) shall
be a corporation which shall expressly assume the due and punctual payment of
the principal of and interest on all the Debentures, according to their tenor,
and the due and punctual performance and observance of all of the covenants and
conditions of this Indenture to be performed by the Company by supplemental
indenture satisfactory to the Trustee, executed and delivered to the Trustee by
such corporation, and (ii) unless the Company or such successor corporation, as
the case may be, shall not, immediately after such merger or consolidation, or
such sale or conveyance, be in default in the performance of any such covenant
or condition.

            SECTION 13.02.  Succession by Successor Corporation.  In case of
any such merger, consolidation, sale or conveyance and upon any such assumption
by the successor corporation, such successor corporation shall succeed to and
be substituted for the Company, with the same effect as if it had been named
herein as a party hereto instead of the Company.  Such successor corporation
thereupon may cause to be signed, and may issue either in its own name or in
the name of First Mississippi Corporation, any or all of the Debentures
issuable hereunder which theretofore shall not have been signed by the Company
and delivered to the Trustee; and, upon the order of such successor corporation
(instead of First Mississippi Corporation) and subject to all the terms,
conditions and limitations in this Indenture prescribed, the Trustee shall
authenticate and shall deliver any Debentures which previously shall have been
signed and delivered by the officers of the Company to the Trustee for
authentication, and any Debentures which such successor corporation thereafter
shall cause to be signed and delivered to the Trustee for that purpose.  All
the Debentures so issued shall in all respects have the same legal rank and
benefit under this Indenture as the Debentures theretofore or thereafter issued
in accordance with the terms of this Indenture as though all of such Debentures
had been issued at the date of the execution hereof.

            In case of any such consolidation, merger, sale or conveyance such
changes in phraseology and form (but not in substance) may be made in the
Debentures thereafter to be issued as may be appropriate.





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<PAGE>   90
            SECTION 13.03.  Evidence to be Furnished Trustee.  The Trustee,
subject to the provisions of Sections 9.01 and 9.02, may receive an Officers'
Certificate and an Opinion of Counsel as conclusive evidence that any such
consolidation, merger, sale or conveyance and any such assumption comply with
the provisions of this Article Thirteen.


                                ARTICLE FOURTEEN

                    SATISFACTION AND DISCHARGE OF INDENTURE;
                                UNCLAIMED MONIES


            SECTION 14.01.  Discharge of Indenture.  If (a) there shall have
been delivered to the Trustee for cancellation all Debentures theretofore
authenticated (other than any Debentures which shall have been destroyed, lost
or stolen and in lieu of or in substitution for which other Debentures shall
have been authenticated and delivered), or (b) all such Debentures not
theretofore delivered to the Trustee for cancellation shall have become due and
payable at maturity and the Company shall have deposited with the Trustee, in
trust, funds sufficient to pay at maturity all of such Debentures (other than
any Debentures which shall have been destroyed, lost or stolen and in lieu of
or in substitution for which other Debentures shall have been authenticated and
delivered) not theretofore delivered to the Trustee for cancellation, including
principal and interest, and such deposit shall be upon terms making such funds
payable forthwith upon due presentation, whether before or after such date of
maturity or redemption of such Debentures, and if in either case the Company
shall also pay or cause to be paid all other sums payable hereunder by the
Company, and shall deliver to the Trustee an Officers' Certificate and an
Opinion of Counsel each stating that all conditions precedent herein provided
for relating to the satisfaction and discharge of this Indenture have been
complied with, then (except as to any remaining rights of conversion of the
Debentures) this Indenture shall cease to be of further effect, and the
Trustee, on demand of the Company accompanied by an Officers' Certificate and
an Opinion of Counsel as required by Section 16.06 and at the cost and expense
of the Company, shall execute power instruments acknowledging satisfaction of
and discharging this Indenture.  However, this Indenture shall continue in
effect to the extent necessary to provide for (a) the conversion of Debentures
as provided in Article Five, (b) the discharge of the duties and obligations of
the Trustee, and (c) the right of the holders of the Debentures to payment of
funds held by the Trustee pursuant to this Article Fourteen.  The Company,
however, hereby agrees to compensate and reimburse the Trustee for any services
rendered and costs or expenses thereafter reasonably and properly incurred by
the Trustee in connection with





                                       83
<PAGE>   91
this Indenture or the Debentures, and to indemnify the Trustee and hold it
harmless against any loss, liability, or expense as provided in Section 9.06
hereof.


            SECTION 14.02.  Deposited Monies to be Held in Trust by Trustee.
All monies deposited with the Trustee pursuant to Section 14.01 shall be held
in trust and, subject to the provisions of this Indenture and the Debentures,
applied by it to the payment, either directly or through any paying agent, to
the holders of the particular Debentures for the payment of which such monies
have been deposited with the Trustee, of all sums due thereon for principal and
interest.


            SECTION 14.03.  Paying Agent to Repay Monies Held.  Upon the
satisfaction and discharge of this Indenture, all monies then held by any
paying agent of the Debentures (other than the Trustee) shall, upon demand of
the Company, be repaid to it or paid to the Trustee, and thereupon such paying
agent shall be released from all further liability with respect to such monies.


            SECTION 14.04.  Unclaimed Monies.  Any monies deposited with the
Trustee or any paying agent (including monies held in trust by the Company if
it shall act as its own paying agent) not applied but remaining unclaimed by
the holders of Debentures for six years after the date upon which the principal
of or interest on such Debentures shall have become due and payable shall be
repaid to the Company by the Trustee or such paying agent on demand, or if held
in trust by the Company may at the Company's option be released from such
trust; and the holder of any of the Debentures entitled to receive such payment
shall thereafter look only to the Company, as the holder of a general claim,
for the payment thereof, and all liability of the Trustee or such paying agent
with respect to such monies, and all liability of the Company as Trustee
thereof, shall thereupon cease, provided, however, that the Trustee or such
paying agent, before being required to make any such repayment, may at the
expense of the Company cause to be published once a week for two successive
weeks (in each case on any day of the week) in an Authorized Newspaper a notice
that said monies have not been so applied and that after a date named therein
any unclaimed balance of said monies then remaining will be returned to the
Company.





                                       84
<PAGE>   92
                                ARTICLE FIFTEEN

                    IMMUNITY OF INCORPORATORS, STOCKHOLDERS,
                             OFFICERS AND DIRECTORS

            SECTION 15.01.  Indenture and Debentures Solely Corporate
Obligations.  No recourse for the payment of the principal of or interest on
any Debentures, or for any claim based thereon or otherwise in respect thereof,
and no recourse under or upon any obligation, covenant or agreement of the
Company in this Indenture, or in any Debenture, or because of the creation of
any indebtedness represented thereby, shall be had against any incorporator,
stockholder, officer or director, as such, past, present or future, of the
Company or of any successor corporation, either directly or through the Company
or any successor corporation, whether by virtue of any constitution, statute or
rule of law, or by the enforcement of any assessment or penalty or otherwise;
it being expressly understood that all such liability is hereby expressly
waived and released as a condition of, and as a consideration for, the
execution of this Indenture and the issue of the Debentures.


                                ARTICLE SIXTEEN

                            MISCELLANEOUS PROVISIONS

            SECTION 16.01.  Provisions Binding on Company's Successors.  All
the covenants, stipulations, promises and agreements in this Indenture
contained by or in behalf of the Company shall bind its successors and assigns,
whether so expressed or not.

            SECTION 16.02.  Official Acts by Successor Corporation.  Any act or
proceeding by any provision of this Indenture authorized or required to be done
or performed by any board, committee or officer of the Company shall and may be
done and performed with like force and effect by the like board, committee or
officer of any corporation that shall at the time be the lawful sole successor
of the Company.

            SECTION 16.03.  Notices.  Any notice or demand which by any
provision of this Indenture is required or permitted to be given or served by
the Trustee or by the holders of Debentures on the Company may be given or
served by being deposited, first class postage prepaid, in a United States post
office letter box addressed (until another address is filed by the Company with
the Trustee) to First Mississippi Corporation, 700 North Street, Jackson,
Mississippi 39202, Attention of the Treasurer.  Any notice, direction, request
or demand by any Debentureholder to or upon the Trustee shall be deemed to have
been sufficiently given or made, for all purposes, if given or made in writing
at the principal corporate trust office of the Trustee, Deposit Guaranty
National Bank, One Deposit Guaranty Plaza, Jackson, Mississippi 39205,
addressed to the attention of its Corporate Trust Division (or such other
address of the Trustee as shall have been set forth





                                       85
<PAGE>   93
in a notice from the Trustee transmitted by mail to all holders of Debentures,
as their names and addresses appear upon the registry books of the Company).
For the purposes of Article Four of this Indenture, any notice, direction,
request or demand by the Company or any holder of Senior Indebtedness to or
upon the Trustee shall be deemed sufficiently given or made only if given or
made as described in the preceding sentence.

            SECTION 16.04.  Subscription.  Debentures will be issued only to
persons to whom the Company has granted options to purchase such Debentures
under the Company's 1988 Long-Term Incentive Plan.  The Trustee shall have no
obligations with respect to the terms or performance of such options or such
Plan.

            SECTION 16.05.  Governing Law.  This Indenture and each Debenture
shall be deemed to be a contract made under the laws of the State of
Mississippi and for all purposes shall be governed by and construed in
accordance with the laws of said State.

            SECTION 16.06.  Evidence of Compliance with Conditions Precedent.
Upon any application or demand by the Company to the Trustee to take any action
under any of the provisions of this Indenture, the Company shall furnish to the
Trustee an Officers' Certificate stating that in the opinion of the signers all
conditions precedent, if any, provided for in this Indenture relating to the
proposed action have been complied with and an Opinion of Counsel stating that,
in the opinion of such counsel, all such conditions precedent have been
complied with.

            Each certificate or opinion provided for in this Indenture and
delivered to the Trustee with respect to compliance with a condition or
covenant provided for in this Indenture shall include (1) a statement that the
person making such certificate or opinion has read such covenant or condition;
(2) a brief statement as to the nature and scope of the examination or
investigation upon which the statements or opinion contained in such
certificate or opinion are based; (3) a statement that, in the opinion of such
person, he has made such examination or investigation as is necessary to enable
him to express an informed opinion as to whether or not such covenant or
condition has been complied with; and (4) a statement as to whether or not, in
the opinion of such person, such condition or covenant has been complied with.

            SECTION 16.07.  Legal Holidays.  If the date of maturity of
principal or interest or the date of prepayment or redemption of any Debenture
or the last day on which a Debentureholder has the right to convert his
Debenture at the conversion price shall be (i) a Saturday, a Sunday or a legal
holiday at the place where payment or conversion thereof, as the case may be,
is to be made, or (ii) a day on which banking institutions at the place where
such payment or conversion, as the case may be, is to be made are





                                       86
<PAGE>   94
authorized by law to remain closed, then such payment or conversion, as the
case may be, may be made on the next succeeding business day which is not a day
specified in (i) or (ii) above, with the same force and effect as if made on
the nominal date of maturity, and no interest shall accrue for the period from
and after such nominal date.

            SECTION 16.08.  Trust Indenture Act to Control.  If this Indenture
is qualified under the Trust Indenture Act of 1939, then if and to the extent
that any provision of this Indenture limits, qualifies or conflicts with
another provision included in this Indenture which is required to be included
in this Indenture by any of Sections 310 to 317, inclusive, of the Trust
Indenture Act of 1939, such required provision shall control.

            SECTION 16.09.  Table of Contents and Headings.  The table of
contents, titles and headings of the articles and sections of this Indenture
have been inserted for convenience of reference only, are not to be considered
a part hereof, and shall in no way modify or restrict any of the terms or
provisions hereof.

            SECTION 16.10.  Method of Publication or Other Notice When
Indenture Provision for Publication or Notice Cannot Be Followed.  In case, by
reason of the temporary or permanent suspension of publication of any
newspaper, or by reason of any other cause, it shall be impossible to make
publication of any notice required hereby in a newspaper as herein provided,
then such publication or other notice in lieu thereof as shall be made with the
approval of the Trustee shall constitute a sufficient publication of such
notice.  Such publication or other notice shall, so far as may be, approximate
the terms and conditions of the publication in lieu of which it is given.

            SECTION 16.11.  Invalidity of Some Provisions Shall Not Affect
Others.  In case any one or more of the provisions contained in this Indenture
or in the Debentures shall for any reason be held to be invalid, illegal or
unenforceable in any respect, such invalidity, illegality or unenforceability
shall not affect any other provisions of this Indenture or of such Debentures,
but this Indenture and such Debentures shall be construed as if such invalid or
illegal or unenforceable provision had never been contained herein or therein.

            SECTION 16.12.  Execution in Counterparts.  This Indenture may be
executed in any number of counterparts, each of which shall be an original; but
such counterparts shall together constitute but one and the same instrument.

            Deposit Guaranty National Bank hereby accepts the trust in this
Indenture declared and provided upon the terms and conditions hereinabove set
forth.





                                       87
<PAGE>   95
            IN WITNESS WHEREOF, FIRST MISSISSIPPI CORPORATION has caused this
Indenture to be signed and acknowledged by its President or one of its Vice
Presidents, and its corporate seal to be affixed hereunto, and the same to be
attested by its Secretary or one of its Assistant Secretaries, and DEPOSIT
GUARANTY NATIONAL BANK has caused this Indenture to be signed and acknowledged
by one of its Vice Presidents or Assistant Vice Presidents, and has caused its
corporate seal to be affixed hereunto, and the same to be attested by its
Secretary or one of its Assistant Secretaries, as of the day and year first
written above.



                                               FIRST MISSISSIPPI CORPORATION


[SEAL]
                                               By: /s/ R. Michael Summerford   
                                                   ----------------------------
                                                     R. Michael Summerford
                                                     Vice President

Attest:



/s/ James L. McArthur           
- --------------------------------
Secretary/Assistant Secretary



                                               DEPOSIT GUARANTY NATIONAL BANK


[SEAL]
                                               By: /s/ Pete J. Cajoleas        
                                                   ----------------------------
                                                   Vice President and
                                                   Trust Officer

Attest:



/s/ Janice M. Powell            
- --------------------------------
Title: Assistant Trust Officer






                                       88
<PAGE>   96
STATE OF MISSISSIPPI )
                     )   SS.
COUNTY OF HINDS      )


            On this 16th day of February, 1995, before me, the undersigned, a
Notary Public of the State of Mississippi, personally appeared R. Michael
Summerford, who proved to me on the basis of satisfactory evidence to be the
Vice President, and James L. McArthur, who proved to me on the basis of
satisfactory evidence to be the Secretary or Assistant Secretary of FIRST
MISSISSIPPI CORPORATION, and that they, as such officers, being authorized to
do so, executed the foregoing instrument for the purposes therein contained.

            IN WITNESS WHEREOF, I have hereunto set my hand and official seal
the day and year first above written.




                                               /s/ Nora Jean I. Breazeale      
                                               --------------------------------
                                               Notary Public of the
                                               State of Mississippi

[Notary Seal]

                                               My Commission Expires

                                                 September 20, 1997            
                                               --------------------------------






                                       89
<PAGE>   97
STATE OF MISSISSIPPI )
                     )   SS.
COUNTY OF HINDS      )


            On this 17th day of February, 1995 before me, the undersigned, a
Notary Public of the State of Mississippi, personally appeared Pete J. Cajoleas
who proved to me on the basis of satisfactory evidence to be the Vice President
and Trust Officer, and Janice M. Powell, who proved to me on the basis of
satisfactory evidence to be the Assistant Trust Officer of DEPOSIT GUARANTY
NATIONAL BANK, and that they, as such officers, being authorized to do so,
executed the foregoing instrument for the purposes therein contained.

            IN WITNESS WHEREOF I have hereunto set my hand and official seal
the day and year first above written.



                                               /s/ Mary E. Husky               
                                               --------------------------------
                                               Notary Public of the
                                               State of Mississippi

[Notary Seal]

                                               My Commission Expires

                                                  February 18, 1996            
                                               --------------------------------





                                       90
<PAGE>   98
                           FORM OF CONSENT TO PLEDGE



To:  First Mississippi Corporation

            The undersigned holds or intends to purchase a debenture in the
aggregate principal amount of $_____________________ (the "Debenture") issued
by First Mississippi Corporation (the "Company").  The Debenture is one of a
series of debentures issued the Company entitled 1994-1 Series Convertible
Subordinated Debentures (the "Debentures").  In accordance with the provisions
of Section 10.06 of the Indenture dated as of November 14, 1994 governing the
terms of the Debentures, the undersigned hereby requests the Company's consent
to a proposed pledge of the Debenture to:


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

- --------------------------------------------------------------------------------
for the purpose of borrowing money to purchase the Debenture.

            Please signify the Company's consent to the proposed pledge by
signing in the space below and returning an executed counterpart to the
undersigned.



Dated:                                                                         
      --------------------                     --------------------------------
                                               Signature of Debentureholder



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

                                               Printed Name of Debentureholder



                                  * * * * * *


            First Mississippi Corporation hereby consents to the
above-described pledge of the Debenture.


                                               FIRST MISSISSIPPI CORPORATION



                                               By:                              
                                                  ------------------------------





                                   EXHIBIT A

<PAGE>   1
                                                                     EXHIBIT 4.8

                      SECOND SUPPLEMENTAL INDENTURE TO THE
                     INDENTURE DATED AS OF NOVEMBER 15 1991
                   BETWEEN FIRST MISSISSIPPI CORPORATION AND
                         DEPOSIT GUARANTY NATIONAL BANK


         This Second Supplemental Indenture to the Indenture (the "Indenture")
dated as of November 15, 1991 between FIRST MISSISSIPPI CORPORATION, a
corporation duly organized and existing under the laws of the State of
Mississippi (the "Company"), and DEPOSIT GUARANTY NATIONAL BANK, a national
banking association organized under the laws of the United States (the
"Trustee"), is entered into as of this 23rd day of December, 1996 by and among
the Company, the Trustee and ChemFirst Inc., a wholly-owned subsidiary of the
Company.

                               Statement of Facts

         The Company and the Trustee are parties to the Indenture pursuant to
which the Company has been authorized to issue Debentures in the aggregate
principal amount of $102,437.50, of which Debentures in the aggregate principal
amount of $-0- have been issued and are currently outstanding, and Debentures
in the aggregate principal amount of $46,562.50 remain subject to issuance upon
exercise of outstanding Debenture options. The Company is in the process of
completing a transaction pursuant to which certain of the Company's assets,
including all Indentures and Debentures to which the Company is currently a
party, will be assigned to ChemFirst Inc. ("ChemFirst"), a wholly-owned
subsidiary of the Company, whose stock will thereafter be distributed to the
Company's shareholders on a pro rata basis. Section 13.01 of the Indenture
provides that any successor to the Company which assumes the Company's
obligations under this Indenture shall do so by supplemental indenture
satisfactory to the Trustee. The Company, the Trustee and ChemFirst wish to
amend the Indenture to provide for the express assumption by ChemFirst of the
due and punctual payment of the principal of and interest on all the
Debentures, according to their tenor, and the due and punctual performance and
observance of all of the covenants and conditions of the Indenture.

                             Modification of Terms

         For and in consideration of the foregoing premises, the parties hereto
covenant and agree for the benefit of the Debenture Holders as follows:

         The provisions of the Indenture and the terms of the Debentures are
hereby modified to provide that ChemFirst shall succeed to and be substituted
for the Company for purposes of the Indenture and the Debentures, and in
accordance therewith ChemFirst, by executing this Second Supplemental
Indenture, hereby expressly assumes the due and punctual payment of the
principal of and interest on all the Debentures, according to their tenor, and
the due and punctual performance and observance of all of the covenants and
conditions of the Indenture. In addition, the holder of each Debenture shall,
subject to the terms and conditions of such Debenture, have the right to
convert such Debenture into shares of Convertible Preferred Stock of ChemFirst
and


<PAGE>   2
such Debentures shall no longer be convertible into shares of Convertible
Preferred Stock of First Mississippi Corporation. All applicable sections of
the Indenture and all applicable terms of the Debentures, including without
limitation those described below, are hereby amended to implement the foregoing
modification:

         (a)   The definition for "Company" in Section 1.01 of the Indenture
               shall be deleted and replaced with the following:

                    "The term "Company" shall mean ChemFirst Inc., a
                    Mississippi corporation, and, subject to the provisions of
                    Article Thirteen, shall include its successors and
                    assigns."

         (b)   All references to "First Mississippi Corporation" in the
               Indenture and in each Debenture shall be stricken and replaced
               with the words "ChemFirst Inc."


         IN WITNESS WHEREOF, FIRST MISSISSIPPI CORPORATION, DEPOSIT GUARANTY
NATIONAL BANK AND CHEMFIRST INC. have each caused this Second Supplemental
Indenture to be signed and acknowledged by its President or one of its Vice
Presidents, and its corporate seal to be affixed hereunder, and the same to be
attested by its Secretary or one of its Assistant Secretaries, as of the day
and year first written above.



                                             FIRST MISSISSIPPI CORPORATION
        (Corporate Seal)


Attest:                                      By: 
        ------------------------------           ------------------------------
        Secretary                            Title:



                                             DEPOSIT GUARANTY NATIONAL BANK
        (Corporate Seal)


Attest:                                      By: 
        ------------------------------           ------------------------------
        Secretary                            Title:



                                             CHEMFIRST INC.
        (Corporate Seal)


Attest:                                      By: 
        ------------------------------           ------------------------------
        Secretary                            Title:

<PAGE>   1
                                                                     EXHIBIT 5.1



December 23, 1996


Board of Directors
ChemFirst Inc.
700 North Street
Jackson, MS 39202-3095

Gentlemen:

This opinion is given in connection with a Registration Statement on Form S-8
(the "Registration Statement") which CHEMFIRST INC. (the "Company") is filing
with the Securities and Exchange Commission to register (i) $433,125.00 in
principal amount of its 1987-A Series Convertible Subordinated Debentures (the
"1987-A Series Debentures"), for sale to participants under the ChemFirst Inc.
1980 Long-Term Incentive Plan (the "1980 Plan"), 30,000 shares of its 1987-A
Series Convertible Preferred Stock (the "1987-A Series Stock") issuable upon
conversion of the 1987-A Series Debentures and 48,300 shares of its Common
Stock (the "Common Stock") issuable upon conversion of the 1987-A Series Stock,
(ii) $1,051,875.00 in principal amount of its 1988-A Series Convertible
Subordinated Debentures (the "1988-A Series Debentures"), for sale to
participants under the 1980 Plan, 66,000 shares of its 1988-A Convertible
Preferred Stock (the "1988-A Series Stock") issuable upon conversion of the
1988-A Series Debentures, and 106,260 shares of the Common Stock issuable upon
conversion of the 1988-A Series Stock, (iii) $80,625.00 in principal amount of
its 1988-1 Series Convertible Subordinated Debentures (the "1988-1 Series
Debentures"), for sale to participants under the ChemFirst Inc. 1988 Long-Term
Incentive Plan (the "1988 Plan"), 5,000 of its 1988-1 Series Convertible
Preferred Stock (the "1988-1 Series Stock") issuable upon conversion of the
1988-1 Series Debentures, and 8,050 shares of the Common Stock issuable upon
conversion of the 1988-1 Series Stock, (iv) $288,750.00 in principal amount of
its 1989-A Series Convertible Subordinated Debentures (the "1989-A Series
Debentures"), for sale to participants under the 1980 Plan, 16,500 shares of
its 1989-A Convertible Preferred Stock (the "1989-A Series Stock") issuable
upon conversion of the 1989-A Series Debentures, and 26,565 shares of the
Common Stock issuable upon conversion of the 1989-A Series Stock, (v)
$787,500.00 in principal amount of its 1989-1 Series Convertible Subordinated
Debentures (the "1989-1 Series Debentures"), for sale to participants under the
1988 Plan, 45,000 shares of its 1989-1 Series Convertible Preferred Stock (the
"1989-1 Series Stock") issuable upon conversion of the 1989-1 Series
Debentures, and 72,450 shares of the Common Stock issuable upon conversion of
the 1989-1 Series Stock (vi) $69,062.50 in principal amount of its 1989-2
Series Convertible Subordinated Debentures (the "1989-2 Series Debentures"),
for sale to participants under the 1988 Plan, 5,000 shares of its 1989-2 Series
Convertible Preferred Stock (the "1989-2 Series Stock") issuable upon
conversion of the 1989-2 

<PAGE>   2
Board of Directors
December 23, 1996
Page 2


Series Debentures and 8,050 shares of the Common Stock issuable upon conversion
of the 1989-2 Series Stock, (vii) $576,033.00 in principal amount of its 1990-1
Convertible Subordinated Debentures (the "1990-1 Series Debentures"), for sale
to participants under the 1988 Plan, 52,376 shares of its 1990-1 Series
Convertible Preferred Stock (the "1990-1 Series Stock") issuable upon
conversion of the 1990-1 Series Debentures and 8,430 shares of the Common Stock
issuable upon conversion of the 1990-1 Series Stock, (viii) $46,875.00 in
principal amount of its 1990-2 Series Convertible Subordinated Debentures (the
"1990-2 Series Debentures") for sale to participants under the 1988 Plan, 5,000
shares of its 1990-2 Series Convertible Preferred Stock (the "1990-2 Series
Stock") issuable upon conversion of the 1990-2 Series Debentures and 8,050
shares of the Common Stock issuable upon conversion of the 1990-2 Series Stock,
(ix) $39,250 in principal amount of its 1991-1 Series Convertible Subordinated
Debentures (the "1991-1 Series Debentures"), for sale to participants under the
1988 Plan, 4,000 shares of its 1991-1 Series Convertible Preferred Stock (the
"1991-1 Series Stock") issuable upon conversion of the 1991-1 Series Debentures
and 6,440 shares of the Common Stock issuable upon conversion of the 1991-1
Series Stock, (x) $45,562.50 in principal amount of its 1991-2 Series
Convertible Subordinated Debentures (the "1991-2 Series Debentures") for sale
to participants under the 1988 Plan, 5,000 shares of its 1991-2 Series
Convertible Preferred Stock (the "1991-2 Series Stock ") issuable upon
conversion of the 1991-2 Series Debentures and 8,050 shares of the Common Stock
issuable upon conversion of the 1991-2 Series Stock, (xi) $39,062.50 in
principal amount of its 1992-1 Series Convertible Subordinated Debentures (the
"1992-1 Series Debentures") for sale to participants under the 1988 Plan, 5,000
shares of its 1992-1 Series Convertible Preferred Stock (the "1992-1 Series
Stock") issuable upon conversion of the 1992-1 Debentures, and 8,050 shares of
the Common Stock issuable upon conversion of the 1992-1 Series Stock, and (xii)
1,291,555 shares of Common Stock to be issued collectively under the 1980 Plan,
the 1988 Plan and the ChemFirst Inc. 1995 Long-Term Incentive Plan (the "1995
Plan") (the foregoing plans being collectively referred to as the "Plans").

As General Counsel of the Company, I am familiar with the Company's Amended and
Restated Articles of Incorporation and Bylaws; the Plans; the Registration
Statement; the actions taken and resolutions passed by the Company's Board of
Directors to authorize the 1987-A Series Debentures, 1988-A Series Debentures,
1988-1 Series Debentures, 1989-A Series Debentures, 1989-1 Series Debentures,
1989-2 Series Debentures, 1990-1 Series Debentures, 1990-2 Series Debentures,
1991-1 Series Debentures, 1991-2 Series Debentures and 1992-1 Series Debentures
(collectively the "Debentures") and the taking of certain other actions in
connection with the offering and sale of the Debentures, the action taken and
resolution passed by the Company's Board of Directors to authorize the 1987-A
Series Stock, 1988-A Series Stock, 1988-1 Series Stock, 1989-A Series Stock,
1989-1 Series Stock, 1989-2 Series Stock, 1990-1 Series Stock, 1990-2 Series
Stock, 1991-1 Series Stock, 1991-2 Series Stock, and 1992-1 Series Stock (the
aforementioned series of stock being collectively referred to as the "Series
Stock") and the Common Stock issuable pursuant to the Plan; the Indentures
(including all amendments and any supplemental indentures) between the Company
and Deposit Guaranty National Bank, as Trustee such Debentures being
respectively dated as follows: August 10, 1987 relating to the 1987-A Series
Debentures, August 30, 1988 relating to the 1988-A Series Debentures, November
29,

<PAGE>   3
Board of Directors
December 23, 1996
Page 3



1988 relating to the 1988-1 Series Debentures, August 22, 1989 relating to
the 1989-A Series Debentures, August 22, 1989 relating to the 1989-1 Series
Debentures, November 10, 1989 relating to the 1989-2 Series Debentures, August
27, 1990 relating to the 1990-1 Series Debentures, November 9, 1990 relating to
the 1990-2 Series Debentures, August 27, 1991 relating to the 1991-1 Series
Debentures, November 15, 1991 relating to the 1991-2 Series Debentures, and
November 13, 1992 relating to the 1992-1 Series Debentures; the form of each of
the Series Debentures; the Debenture Options related to the Series Debentures,
and such other matters and documents deemed necessary for the purpose of
rendering this opinion.

On the basis of the foregoing, I am of the opinion that:

         1.       The 1987-A Series Debentures, 1988-A Series Debentures and
                  1989-A Series Debentures have been duly authorized and when
                  issued and paid for in accordance with the terms of the 1980
                  Plan and applicable debenture options will be validly issued
                  and binding obligations of the Company.

         2.       The 1987-A Series Stock, 1988-A Series Stock and 1989-A
                  Series Stock issuable upon conversion of the 1987-A Series
                  Debentures, 1988-A Series Debentures and 1989 Series
                  Debentures, respectively, will, when so issued in accordance
                  with the 1980 Plan, the respective applicable Indenture
                  applicable to each such series and the resolutions passed by
                  the Company's Board of Directors, be legally issued, fully
                  paid and non-assessable.

         3.       The shares of Common Stock issuable upon conversion of the
                  1987-A Series Stock, 1988-A Series Stock and 1989-A Series
                  Stock will, when so issued in accordance with the 1980 Plan
                  and the resolutions passed by the Company's Board of
                  Directors, be legally issued, fully paid and non-assessable.

         4.       The 1988-1 Series Debentures, 1989-1 Series Debentures,
                  1989-2 Series Debentures, 1990-1 Series Debentures, 1990-2
                  Series Debentures, 1991-1 Series Debentures, 1991-2 Series
                  Debentures and 1992-1 Series Debentures have been duly
                  authorized and when issued and paid for in accordance with
                  the terms of the 1988 Plan and any debenture option
                  applicable thereto, will be validly issued and binding
                  obligations of the Company.

         5.       The shares of 1988-1 Series Stock, 1989-1 Series Stock,
                  1989-2 Series Stock, 1990-1 Series Stock, 1990-2 Series
                  Stock, 1991-1 Series Stock, 1991-2 Series Stock, and 1992-1
                  Series Stock issuable upon conversion, respectively, of the
                  1988-1 Series Debentures, 1989-1 Series Debentures, 1989-2
                  Series Debentures, 1990-1 Series Debentures, 1990-2 Series
                  Debentures, 1991-1 Series Debentures, 1991-2 Series
                  Debentures, 1992-1 Series Debentures will, when so issued in
                  accordance with the 1988 Plan, the respective Indenture
                  applicable to each such series of preferred stock and the
                  resolutions passed by the Company's Board of Directors, be
                  legally issued, fully paid and non-assessable.
<PAGE>   4
Board of Directors
December 23, 1996
Page 4

         6.       The shares of Common Stock issuable upon conversion of the
                  1988-1 Series Stock, 1989-1 Series Stock, 1989-2 Series
                  Stock, 1990-1 Series Stock, 1990-2 Series Stock, 1991-1
                  Series Stock, 1991-2 Series Stock and 1992-1 Series Stock
                  will, when so issued in accordance with the 1988 Plan and the
                  resolutions passed by the Company's Board of Directors, be
                  legally issued, fully paid and non-assessable.

         7.       All other shares of the Common Stock issuable pursuant to
                  Stock Options and other awards under the Plans will, when
                  issued in accordance with the respective Plans, be legally
                  issued, fully paid and non-assessable.

The opinion herein is limited solely to the laws of the State of Mississippi
and the laws of the United States, and I express no opinion herein concerning
the laws of any other jurisdiction.

The opinion is subject to the following qualifications:

         (a)      Rights and remedies set forth in the respective
                  Indentures mentioned above and the Series Debentures are
                  subject to applicable bankruptcy, insolvency, reorganization
                  and other laws now or hereafter in effect affecting the
                  enforcement of creditors' rights generally, and

         (b)      No opinion is expressed as to the availability of any
                  remedy or remedies that may be sought with respect to the
                  specific enforcement of any provision of any Indenture
                  referred to above or any of the Series Debentures.

I hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to me and to my opinion in the
Registration Statement.

Very truly yours,



J. Steve Chustz
General Counsel

JSC:js

<PAGE>   1
                                                                   EXHIBIT 23.1




December __, 1996


Board of Directors
ChemFirst Inc.
700 North Street
Jackson, MS 39202-3095

Gentlemen:

This opinion is given in connection with a Registration Statement on Form S-8
(the "Registration Statement") which CHEMFIRST INC. (the "Company") is filing
with the Securities and Exchange Commission to register (i) $433,125.00 in
principal amount of its 1987-A Series Convertible Subordinated Debentures (the
"1987-A Series Debentures"), for sale to participants under the ChemFirst Inc.
1980 Long-Term Incentive Plan (the "1988 Plan"), 30,000 shares of its 1987-A
Series Convertible Preferred Stock (the "1987-A Series Stock") issuable upon
conversion of the 1987-A Series Debentures and 48,300 shares of its Common
Stock (the "Common Stock") issuable upon conversion of the 1987-A Series Stock,
(ii) $1,051,875.00 in principal amount of its 1988-A Series Convertible
Subordinated Debentures (the "1988-A Series Debentures"), for sale to
participants under the 1980 Plan, 66,000 shares of its 1988-A Convertible
Preferred Stock (the "1988-A Series Stock") issuable upon conversion of the
1988-A Series Debentures, and 106,260 shares of the Common Stock issuable upon
conversion of the 1988-A Series Stock, (iii) $80,625.00 in principal amount of
its 1988-1 Series Convertible Subordinated Debentures (the "1988-1 Series
Debentures"), for sale to participants under the ChemFirst Inc. 1988 Long-Term
Incentive Plan (the "1988 Plan"), 5,000 of its 1988-1 Series Convertible
Preferred Stock (the "1988-1 Series Stock") issuable upon conversion of the
1988-1 Series Debentures, and 8,050 shares of the Common Stock issuable upon
conversion of the 1988-1 Series Stock, (iv) $288,750.00 in principal amount of
its 1989-A Series Convertible Subordinated Debentures (the "1989-A Series
Debentures"), for sale to participants under the 1980 Plan, 16,500 shares of
its 1989-A Convertible Preferred Stock (the "1989-A Series Stock") issuable
upon conversion of the 1989-A Series Debentures, and 26,565 shares of the
Common Stock issuable upon conversion of the 1989-A Series Stock, (v)
$787,500.00 in principal amount of its 1989-1 Series Convertible Subordinated
Debentures (the "1989-1 Series Debentures"), for sale to participants under the
1988 Plan, 45,000 shares of its 1989-1 Series Convertible Preferred Stock (the
"1989-1 Series Stock") issuable upon conversion of the 1989-1 Series
Debentures, and 72,450 shares of the Common Stock issuable upon conversion of
the 1989-1 Series Stock (vi) $69,062.50 in principal amount of its 1989-2
Series Convertible Subordinated Debentures (the "1989-2 Series Debentures"),
for sale to participants under the 1988 Plan, 5,000 shares of its 1989-2 Series
Convertible Preferred Stock (the "1989-2 Series Stock") issuable upon
conversion of the 1989-2 Series Debentures and 8,050 shares of the Common Stock
issuable upon 


<PAGE>   2

conversion of the 1989-2 Series Stock, (vii) $576,033.00 in principal amount of
its 1990-1 Convertible Subordinated Debentures (the "1990-1 Series
Debentures"), for sale to participants under the 1988 Plan, 52,376 shares of
its 1990-1 Series Convertible Preferred Stock (the "1990-1 Series Stock")
issuable upon conversion of the 1990-1 Series Debentures and 8,430 shares of
the Common Stock issuable upon conversion of the 1990-1 Series Stock, (viii)
$46,875.00 in principal amount of its 1990-2 Series Convertible Subordinated
Debentures (the "1990-2 Series Debentures") for sale to participants under the
1988 Plan, 5,000 shares of its 1990-2 Series Convertible Preferred Stock (the
"1990-2 Series Stock") issuable upon conversion of the 1990-2 Series Debentures
and 8,050 shares of the Common Stock issuable upon conversion of the 1990-2
Series Stock, (ix) $39,250 in principal amount of its 1991-1 Series Convertible
Subordinated Debentures (the "1991-1 Series Debentures"), for sale to
participants under the 1988 Plan, 4,000 shares of its 1991-1 Series Convertible
Preferred Stock (the "1991-1 Series Stock") issuable upon conversion of the
1991-1 Series Debentures and 6,440 shares of the Common Stock issuable upon
conversion of the 1991-1 Series Stock, (x) $45,562.50 in principal amount of
its 1991-2 Series Convertible Subordinated Debentures (the "1991-2 Series
Debentures") for sale to participants under the 1988 Plan, 5,000 shares of its
1991-2 Series Convertible Preferred Stock (the "1991-2 Series Stock ") issuable
upon conversion of the 1991-2 Series Debentures and 8,050 shares of the Common
Stock issuable upon conversion of the 1991-2 Series Stock, (xi) $39,062.50 in
principal amount of its 1992-1 Series Convertible Subordinated Debentures (the
"1992-1 Series Debentures") for sale to participants under the 1988 Plan, 5,000
shares of its 1992-1 Series Convertible Preferred Stock (the "1992-1 Series
Stock") issuable upon conversion of the 1992-1 Debentures, and 8,050 shares of
the Common Stock issuable upon conversion of the 1992-1 Series Stock, and (xii)
1,291,555 shares of stock to be issued collectively under the 1980 Plan, the
1988 Plan and the ChemFirst Inc. 1995 Long-Term Incentive Plan (the "1995
Plan") (the foregoing plans being collectively referred to as the "Plans").

As General Counsel of the Company, I am familiar with the Company's Articles of
Incorporation and Bylaws; the Plans; the Registration Statement; the actions
taken and resolutions passed by the Company's Board of Directors to authorize
the 1987-A Series Debentures, 1988-A Series Debentures, 1988-1 Series
Debentures, 1989-A Series Debentures, 1989-1 Series Debentures, 1989-2 Series
Debentures, 1990-1 Series Debentures, 1990-2 Series Debentures, 1991-1 Series
Debentures, 1991-2 Series Debentures and 1992-1 Series Debentures (collectively
the "Debentures") and the taking of certain other actions in connection with
the offering and sale of the Debentures, the action taken and resolution passed
by the Company's Board of Directors to authorize the 1987-A Series Stock,
1988-A Series Stock, 1988-1 Series Stock, 1989-A Series Stock, 1989-1 Series
Stock, 1989-2 Series Stock, 1990-1 Series Stock, 1990-2 Series Stock, 1991-1
Series Stock, 1991-2 Series Stock, and 1992-1 Series Stock (the aforementioned
series of stock being collectively referred to as the "Series Stock") and the
Common Stock issuable pursuant to the Plan; the Indentures (inclusive of all
amendments and including any supplemental Indentures) between the Company and
Deposit Guaranty National Bank, as Trustee such Debentures being respectively
dated as follows: August 10, 1987 relating to the 1987-A Series Debentures,
August 30, 1988 relating to the 1988-A Series Debentures, November 29, 1988
relating to the 1988-1 Series Debentures, August 22, 1989 relating to the
1989-A Series Debentures, August 22, 1989 relating to the 1989-1 Series
Debentures, November 10, 1989 


<PAGE>   3

relating to the 1989-2 Series Debentures, August 27, 1990 relating to the
1990-1 Series Debentures, November 9, 1990 relating to the 1990-2 Series
Debentures, August 27, 1991 relating to the 1991-1 Series Debentures, November
15, 1991 relating to the 1991-2 Series Debentures, and November 13, 1992
relating to the 1992-1 Series Debentures; the form of each of the Series
Debentures; the Debenture Options related to the Series Debentures, and such
other matters and documents deemed necessary for the purpose of rendering this
opinion.

On the basis of the foregoing, I am of the opinion that:

     1.  The 1987-A Series Debentures, 1988-A Series Debentures and 1989-A
         Series Debentures have been duly authorized and when issued and paid
         for in accordance with the terms of the 1980 Plan and applicable
         debenture options will be validly issued and binding obligations of
         the Company.

     2.  The 1987-A Series Stock, 1988-A Series Stock and 1989-A Series Stock
         issuable upon conversion of the 1987-A Series Debentures, 1988-A
         Series Debentures and 1989 Series Debentures, respectively, will, when
         so issued in accordance with the 1980 Plan, the respective applicable
         Indenture applicable to each such series and the resolutions past by
         the Company's Board of Directors, be legally issued, fully paid and
         non-assessable.

     3.  The shares of Common Stock issuable upon conversion of the 1987-A
         Series Stock, 1988-A Series Stock and 1989-A Series Stock will when so
         issued in accordance with the 1980 Plan, the respective Indenture
         applicable to each series of preferred stock and the resolutions
         passed by the Company's Board of Directors be legally issued, fully
         paid and non-assessable.

     4.  The 1988-1 Series Debentures, 1989-1 Series Debentures, 1989-2 Series
         Debentures, 1990-1 Series Debentures, 1990-2 Series Debentures, 1991-1
         Series Debentures, 1991-2 Series Debentures and 1992-1 Series
         Debentures have been duly authorized and when issued and paid for in
         accordance with the terms of the 1988 Plan and any debenture option
         applicable thereto, will be validly issued and binding obligations of
         the Company.

     5.  The shares of 1988-1 Series Stock, 1989-1 Series Stock, 1989-2 Series
         Stock, 1990-1 Series Stock, 1990-2 Series Stock, 1991-1 Series Stock,
         1991-2 Series Stock, and 1992-1 Series Stock issuable upon conversion,
         respectively, of the 1988-1 Series Debentures, 1989-1 Series
         Debentures, 1989-2 Series Debentures, 1990-1 Series Debentures, 1990-2
         Series Debentures, 1991-1 Series Debentures, 1991-2 Series Debentures,
         1992-1 Series Debentures will, when so issued in accordance with the
         1988 Plan, the respective Indenture applicable to each such series of
         preferred stock and the resolutions passed by the Company's Board of
         Directors, be legally issued, fully paid and non-assessable.


<PAGE>   4

     6.  The shares of Common Stock issuable upon conversion of the 1988-1
         Series Stock, 1989-1 Series Stock, 1989-2 Series Stock, 1990-1 Series
         Stock, 1990-2 Series Stock, 1991-1 Series Stock, 1991-2 Series Stock
         and 1992-1 Series Stock will, when so issued in accordance with the
         1988 Plan, the respective Indenture applicable to each series of
         preferred stock and the resolutions passed by the Company's Board of
         Directors, be legally issued, fully paid and non-assessable.

     7.  All other shares of the Common Stock issuable pursuant to Stock
         Options and other awards under the Plans will, when issued in
         accordance with the respective Plans, be legally issued, fully paid
         and non-assessable.

The opinion herein is limited solely to the laws of the State of Mississippi
and the laws of the United States, and I express no opinion herein concerning
the laws of any other jurisdiction.

The opinion is subject to the following qualifications:

     (a) Rights and remedies set forth in the respective Indentures mentioned
         above and the Series Debentures are subject to applicable bankruptcy,
         insolvency, reorganization and other laws now or hereafter in effect
         affecting the enforcement of creditors' rights generally, and

     (b) No opinion is expressed as to the availability of any remedy or
         remedies that may be sought with respect to the specific enforcement
         of any provision of any Indenture referred to above or any of the
         Series Debentures.

I hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to me and to my opinion in the
Registration Statement.

Very truly yours,

FIRST MISSISSIPPI CORPORATION



J. Steve Chustz
General Counsel

JSC:js

<PAGE>   1
                                                                    EXHIBIT 23.2


                        INDEPENDENT AUDITOR'S CONSENT


The Board of Directors
ChemFirst Inc.:

We consent to the use of our report dated September 6, 1996, on the consolidated
financial statements of ChemFirst Inc. and subsidiaries as of June 30, 1996 and
1995, and for each of the years in the three-year period ended June 30, 1996,
incorporated herein by reference and to the reference to our firm under the
heading "Experts" in the Prospectus.



/s/ KPMG Peat Marwick LLP
- -------------------------------
KPMG Peat Marwick LLP



Jackson, Mississippi
December 23, 1996

<PAGE>   1
                                                                    EXHIBIT 25.1



                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM T-1

         STATEMENT OF ELIGIBILITY AND QUALIFICATION UNDER THE TRUST
INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE



CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO
SECTION 305(b)(2)




                         DEPOSIT GUARANTY NATIONAL BANK
              (Exact name of trustee as specified in its charter)

                  N/A                                             64-0147200
(Jurisdiction of incorporation or                            (I.R.S. Employer
organization if not a U.S. national bank)                    Identification No.)

Post Office Box 1200                                                 39201
210 East Capitol Street                                           (ZIP Code)
Jackson, Mississippi
(Address of principal executive offices)


                               Arlen L. McDonald
                            210 East Capitol Street
                               Jackson, MS 39201
                                 (601) 354-8497
           (Name, Address and telephone number of agent for service)

                                CHEMFIRST, INC.
              (Exact name of obligor as specified in its charter)

          Mississippi                                             64-0679456
(State or other jurisdiction of                             (I.R.S. Employer
incorporation or organization)                               Identification no.)

<PAGE>   2
700 North Street
Jackson, Mississippi                                              39215-1249
(Address of principal executive offices)                          (ZIP Code)


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

                   1987-A Convertible Subordinated Debentures
                   1988-A Convertible Subordinated Debentures
                   1988-1 Convertible Subordinated Debentures
                   1989-A Convertible Subordinated Debentures
                   1989-1 Convertible Subordinated Debentures
                   1989-2 Convertible Subordinated Debentures
                   1990-1 Convertible Subordinated Debentures
                   1990-2 Convertible Subordinated Debentures
                   1991-1 Convertible Subordinated Debentures
                   1991-2 Convertible Subordinated Debentures
                   1992-1 Convertible Subordinated Debentures

                        (Title of indenture securities)

1.    General Information.

         Furnish the following information as to the trustee:

         (a)     Name and address of each examining or supervising authority to
which it is subject.

                 Name                                       Address


                 Comptroller of the Currency                Washington, D.C.

                 Federal Reserve Bank                       Atlanta, GA 
                   (6th District)

                 Federal Deposit Insurance                  Washington, D.C.
                 Corporation

         (b)   Whether it is authorized to exercise corporate trust powers.

                                      Yes.
2.       Affiliations with Obligor.

         If the obligor is an affiliate of the trustee, describe each such
affiliation.
<PAGE>   3
                                        None.

3.       Voting Securities of the Trustee.

                 Not applicable pursuant to Instruction B.

4.       Trusteeships Under Other Indentures.

                 Not applicable pursuant to Instruction B.

5.       Interlocking Directorates and Similar Relationships with the Obligor
         or Underwriters.

                 Not applicable pursuant to Instruction B.

6.       Voting Securities of the Trustee Owned by the Obligor or its
                 Officials.  

                 Not applicable pursuant to Instruction B.

7.       Voting Securities of the Trustee Owned by Underwriters or their
                 Officials.  

                 Not applicable pursuant to Instruction B.

8.       Securities of the Obligor Owned or Held by the Trustee.

                 Not applicable pursuant to Instruction B.

9.       Securities of Underwriters Owned or Held by the Trustee.

                 Not applicable pursuant to Instruction B.

10.      Ownership or Holdings by the Trustee of Voting Securities of Certain
         Affiliates or Security Holders of the Obligor.

                 Not applicable pursuant to Instruction B.

11.      Ownership or Holdings by the Trustee of any Securities of a Person
         Owning 50 Percent or More of the Voting Securities of the Obligor.

                 Not applicable pursuant to Instruction B.

12.      Indebtedness of the Obligor to the Trustee.

                 Not applicable pursuant to Instruction B.

<PAGE>   4
13.      Defaults by the Obligor.

         (a)     State whether there is or has been a default with respect to
                 the securities under this indenture.  Explain the nature of
                 any such default.

                 There have been no such defaults.

         (b)     If the trustee is a trustee under another indenture under
                 which any other securities, or certificates of interest or
                 participation in any other securities, of the obligor are
                 outstanding, or is trustee for more than one outstanding
                 series of securities under the indenture, state whether there
                 has been a default under any such indenture or series,
                 identify the indenture or series affected, and explain the
                 nature of any such default.

                 There have been no such defaults.

14.      Affiliations with the Underwriters.

         If any underwriter is an affiliate of the trustee, describe each such
         affiliation.  

                 Not applicable pursuant to Instruction B.

15.      Foreign Trustee.

                 Identify the order or rule pursuant to which the foreign
         trustee is authorized to act as sole trustee under indentures
         qualified or to be qualified under the Act.

                                 Not applicable.

16.      List of Exhibits.

         Exhibit 1 - Articles of Association of Deposit Guaranty National Bank,
         as amended to date.

         Exhibit 2 - Certificate of Authority to Commence Business;
         incorporated herein by reference to Exhibit 2 of the Form T-1 of
         Deposit Guaranty National Bank, Registration No. 22-17661.

         Exhibit 3 - Authorization to Exercise Corporate Trust
         Powers;incorporated hereinby reference to Exhibit 3 of the Form T-1 of
         Deposit Guaranty National Bank, Registration No. 22-17661.
<PAGE>   5

         Exhibit 4 - Bylaws of Deposit Guaranty National Bank, as amended to
         date.

         Exhibit 5 - Consent of Deposit Guaranty National Bank required by
         Section 321(b) of the Act; incorporated herein by reference to Exhibit
         8 of the Form T-1 of Deposit Guaranty National Bank, Registration
         No.22-17661.

         Exhibit 6 - Report of Condition of Deposit Guaranty National Bank as
         of the close of business on September 30, 1996, published pursuant to
         law or the requirement of its supervising or examining authority.

                                   SIGNATURE

         Pursuant to the requirements of the Trust Indenture Act of 1939, the
trustee, Deposit Guaranty National Bank, a banking association organized and
existing under the laws of the United States, has duly caused this statement of
eligibility and qualification to be signed on its behalf by the undersigned,
thereunto duly authorized, all in the City of Jackson, and State of
Mississippi, on the 20th day of December, 1996.


                                        DEPOSIT GUARANTY NATIONAL BANK


                                        By: /s/ PETE CAJOELAS
                                           -------------------------------------
                                           Pete Cajoelas
                                           Senior Vice President
<PAGE>   6




                            ARTICLES OF ASSOCIATION
                         DEPOSIT GUARANTY NATIONAL BANK

                          (Amended September 20, 1994)
<PAGE>   7
                            ARTICLES OF ASSOCIATION
                         DEPOSIT GUARANTY NATIONAL BANK

         FIRST.  The title of the Association shall be "Deposit Guaranty
National Bank."

         SECOND.  The main office of the Association shall be in the City of
Jackson, County of Hinds, State of Mississippi.  The general business of the
Association shall be conducted at its main office and its branches.

         THIRD.  The Board of Directors of the Association shall consist of not
less than five nor more than twenty-five shareholders, the exact number of
Directors within such minimum and maximum limits to be fixed and determined
from time to time by resolution of a majority of the full Board of Directors or
by resolution of the shareholders at any annual or special meeting thereof.
Unless otherwise provided by the laws of the United States, any vacancy in the
Board of Directors, for any reason, including an increase in the number
thereof, may be filled by action of the Board of Directors.

         FOURTH.  The annual meeting of the shareholders of the Association for
the election of directors and the transaction of whatever other business may be
brought before said meeting shall be held at the main office or such other
place as the Board of Directors may designate, on the day of each year
specified therefor in the Bylaws, but if no election is held on that day, it
may be held on any subsequent day according to the provisions of law; and all
elections shall be held according to such lawful regulations as may be
prescribed by the Board of Directors.

         Nominations for election to the Board of Directors may be made by the
Board of Directors or by any stockholder of any outstanding class of capital
stock of the bank entitled to vote for election of directors.  Nominations,
other than those made by or on behalf of the existing management of the Bank,
shall be made in writing and shall be delivered or mailed to the President of
the Bank and to the Comptroller of the Currency, Washington, D. C., not less
than 14 days nor more than 50 days prior to any meeting of stockholders called
for the election of directors, provided,
<PAGE>   8
PAGE TWO

however, that if less than 21 days' notice of the meeting is given to
shareholders, such nomination shall be mailed or delivered to the President of
the Bank and to the Comptroller of the Currency not later than the close of
business on the seventh day following the day on which the notice of meeting
was mailed.  Such notification shall contain the following information to the
extent known to the notifying shareholder:  (a) the name and address of each
proposed nominee; (b) the principal occupation of each proposed nominee; (c)
the total number of shares of capital stock of the Bank that will be voted for
each proposed nominee; (d) the name and residence address of the notifying
shareholder; and (e) the number of shares of capital stock of the Bank owned by
the notifying shareholder.  Nomination not made in accordance herewith may, in
his discretion, be disregarded by the chairman of the meeting, and upon his
instructions, the vote tellers may disregard all votes cast for each such
nominee.

         FIFTH.  The authorized amount of capital stock of the Association
shall be 3,225,181 shares of common stock, of the par value of $5.00 each; but
said capital stock may be increased or decreased from time to time, in
accordance with the provisions of the laws of the United States.

         If the capital stock is increased by the sale of additional shares
thereof, each shareholder shall be entitled to subscribe for such additional
shares in proportion to the number of shares of said capital stock owned by him
at the time the increase is authorized by the shareholders, unless another time
subsequent to the date of the shareholders' meeting is specified in a
resolution adopted by the shareholders at the time the increase is authorized,
except when they are:  (1) issued to effect a merger or consolidation; (2)
issued to effect an acquisition of assets; (3) issued for consideration other
than cash; (4) issued to satisfy conversion rights, or other rights or options;
or (5) issued pursuant to any employee stock option or stock purchase plan.
The Board of Directors of the Association, at any time and from time to time,
may authorize and issue debt obligations, whether or not subordinated, without
the approval of the shareholders.

         SIXTH.  The Board of Directors shall appoint one of its members
President of the
<PAGE>   9
PAGE THREE

Association, who shall be Chairman of the Board, unless the Board appoints
another director to be the Chairman.  The Board of Directors shall have the
power to appoint one or more Vice Presidents; and to appoint a Cashier and such
other officers and employees as may be required to transact the business of the
Association.

         The Board of Directors shall have the power to define the duties of
the officers and employees of the Association; to fix the salaries to be paid
to them; to dismiss them and to require bonds from them; to regulate the manner
in which any increase of the capital of the Association shall be made; to
manage and administer the business and affairs of the Association; to make all
Bylaws that it may be lawful for them to make; and generally to do and perform
all acts that it may be legal for a Board of Directors to do and perform.

         SEVENTH.  The Board of Directors shall have the power to change the
location of the main office to any other place within the limits of the City of
Jackson, Mississippi, without the approval of the shareholders, but subject to
the approval of the Comptroller of the Currency; and shall have the power to
establish or change the location of any branch or branches of the Association
to or to any other location, with the approval of the shareholders, but subject
to the approval of the Comptroller of the Currency.

         EIGHTH.  The corporate existence of the Association shall continue
until terminated in accordance with the laws of the United States.

         NINTH.  The Board of Directors of the Association, or any three or
more shareholders owning, in the aggregate, not less than 25 percent of the
stock of the Association, may call a special meeting of shareholders at any
time.  Unless otherwise provided by the laws of the United States, a notice of
the time, place and purpose of every annual and special meeting of the
shareholders shall be given by first-class mail, postage prepaid, mailed at
least ten days prior to the date of such meeting to each shareholder of record
at his address as shown upon the books of this Association.
<PAGE>   10
PAGE FOUR

         TENTH.  A.  Subject to Section C of this Article Tenth, the
Association shall indemnify any person who was or is a party or is threatened
to be made party to any threatened, pending or completed action, suit or
proceeding, whether civil, criminal, administrative or investigative (other
than an action by or in the right of the Association) by reason of the fact
that he is or was a director, officer, employee or agent of the Association, or
is or was serving at the request of the Association as a director, officer,
employee or agent of another corporation partnership, joint venture, trust or
other enterprise, against expenses (including attorneys' fees), judgments,
fines and amounts paid in settlement actually and reasonably incurred by him in
connection with such action, suit or proceeding if he acted in good faith and
in a manner he reasonably believed to be in or not opposed to the best interest
of the Association, and, with respect to any criminal action or proceeding, had
no reasonable cause to believe his conduct was unlawful.  The termination of
any action, suit or proceeding by judgment, order, settlement, conviction, or
upon a plea of nolo contendere or its equivalent, shall not, of itself, create
a presumption that the person did not act in good faith and in a manner which
he reasonably believed to be in or not opposed to the best interests of the
Association, and, with respect to any criminal action or proceeding, had
reasonable cause to believe that his conduct was unlawful.  This
indemnification provision shall not extend to those suits instituted by any
such director, officer,  employee or agent unless and to the extent such
indemnification is authorized by the Board of Directors.

         B.  Subject to Section C of this Article Tenth, the Association shall
indemnify any person who was or is a party or is threatened to be made a party
to any threatened, pending or completed action or suit by or in the right of
the Association to procure a judgment in its favor by reason of the fact that
he is or was a director, officer, employee or agent of the Association, or is
or was serving at the request of the Association as a Director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise against expenses (including attorneys' fees) actually and
reasonably incurred by him in connection with the defense or settlement of such
action or suit if he acted in good faith and in a manner he reasonably believed
to be in or not opposed to the best interests of the Association; except that
no indemnification shall be made in respect of any
<PAGE>   11
PAGE FIVE

claim, issue or matter as to which such person shall have been adjudged to be
liable for negligence or misconduct in the performance of his duty to the
Association unless and only to the extent that the court in which such action
or suit was brought shall determine upon application that, despite the
adjudication of liability but in view of all the circumstances of the case,
such person is fairly and reasonably entitled to indemnity for such expenses
which such court shall deem proper.

         C.  Any indemnification under this Article Tenth (unless ordered by a
court) shall be made by the Association only as authorized in the specific case
upon a determination that indemnification of the director, officer, employee or
agent is proper in the circumstances because he has met the applicable standard
of conduct set forth in Section A or Section B of this Article Tenth, as the
case may be.  Such determination shall be made (i) by the Board of Directors by
a majority vote of a quorum of the entire Board of Directors, which majority
and quorum must consist of directors who were not parties to or otherwise
interested in such action, suit or proceeding, or (ii) if such a quorum is not
obtainable, by independent legal counsel in a written opinion, or (iii) by the
stockholder.  Directors "parties to otherwise interested in" an action, suit or
proceeding shall include, for purposes of the preceding sentence, (i) any
director instituting such action, suit or proceeding, whether in his capacity
as director or stockholder (an "Instituting Director") and (ii) any other
director nominated (x) by an Instituting Director (and not by the Board of
Directors), (y) as part of the same slate of nominees as an Instituting
Director (if not nominated by the Board of Directors), or (z) by the same
stockholder or any of the same stockholders who nominated an Instituting
Director.  To the extent, however, that a director, officer, employee or agent
of the Association has been successful on the merits or otherwise in defense of
any action, suit or proceeding described above, or in defense of any claim,
issue or matter therein, he shall be indemnified against expenses (including
attorneys' fees) actually and reasonably incurred by him in connection
therewith, without the necessity of authorization in the specific case.
Notwithstanding any of the provisions of this Article Tenth, in no event shall
any person be indemnified against expenses (including attorneys' fees),
judgments, fines and amounts due or paid in connection with any action, suit or
proceeding instituted by any such director, officer, employee or agent unless
and to the extent such indemnification is authorized by
<PAGE>   12
PAGE SIX

the Board of Directors, or against expenses, penalties, or other payments
incurred in an administrative proceeding or action instituted by an appropriate
bank regulatory agency which proceeding or action results in a final order
assessing civil money penalties or requiring affirmative action by an
individual or individuals in the form of payments to the Association.

         D.  For purposes of a determination under Section C of this Article
Tenth, a person shall be deemed to have acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the
Association, or with respect to any criminal action or proceeding, to have had
no reasonable cause to believe his conduct was unlawful, if his action is based
on the records or books of account of the Association or another enterprise, or
on information supplied to him by the officers of the Association or another
enterprise in the course of their duties, or on the advice of legal counsel for
the Association or another enterprise or on information or records given or
reports made to the Association or another enterprise by an independent
certified public accountant or by an appraiser or other expert selected with
reasonable care by the Association or another enterprise.  The term "another
enterprise" as used in this Section D shall mean any other corporation or any
partnership, joint venture, trust or other enterprise of which such person is
or was serving at the request of the Association as a director, officer,
employee or agent.  The provisions of this Section D shall not be deemed to be
exclusive or to limit in any way the circumstances in which a person may be
deemed to have met the applicable standard of conduct set forth in Sections A
or B of this Article Tenth, as the case may be.

         E.  This Section E does not apply in an administrative proceeding or
action instituted by an appropriate bank regulatory agency which proceeding or
action results in a final order assessing civil money penalties or requiring
affirmative action by an individual or individuals in the form of payments to
the Association.  In other cases, notwithstanding any contrary determination in
the specific case under Section C of this Article Tenth, and notwithstanding
the absence of any determination thereunder, any director, officer, employee or
agent may apply to any court of competent jurisdiction in the state of
Mississippi for indemnification to the extent otherwise permissible under
Sections A and B of this Article Tenth. The basis of such indemnification by a
<PAGE>   13
PAGE SEVEN

court shall be a determination by such court that indemnification of the
director, officer, employee or agent is proper in the circumstances because he
has met the applicable standards of conduct set forth in Sections A and B of
this Article Tenth, as the case may be.  Notice of any application for
indemnification pursuant to this Section E shall be given to the Association
promptly upon the filing of such application.

         F.  Expenses incurred in defending or investigating a threatened or
pending action, suit or proceeding may be paid by the Association in advance of
the final disposition of such action, suit or proceeding as authorized by the
Board of Directors in the specific case upon receipt of an undertaking by or on
behalf of the director, officer, employee or agent to repay such amount unless
it shall ultimately be determined that he is entitled to be indemnified by the
Association as authorized in this Article Tenth.  In addition, in the case of
an administrative proceeding or action instituted by an appropriate bank
regulatory agency which proceeding or action seeks to assess civil money
penalties or require affirmative action by an individual or individuals in the
form of payments to the Association, before any such advances are made, the
Board of Directors , in good faith, must determine in writing that all of the
following conditions are met:

         (1)      The director, officer, employee or agent has a substantial
                  likelihood of prevailing on the merits of such administrative
                  proceeding or regulatory action;

         (2)      In the event the director, officer, employee or agent does
                  not prevail in such administrative proceeding or regulatory
                  action, he or she will have the financial capability to
                  reimburse the Association; and

         (3)      Payment of such expenses by the Association will not
                  adversely affect the Association's safety and soundness.

In addition, prior to making any such advances, the Association shall enter
into a written agreement with the director, officer, employee or agent
providing that the Association shall cease making such advances if, at any
time, the Board of Directors determines that any of the above three conditions
are no longer met in a particular case, and requiring reimbursement for
expenses already paid if a final order is issued in any such administrative
proceeding or regulatory action assessing civil
<PAGE>   14
PAGE EIGHT

money penalties or requiring affirmative action, by such director, officer,
employee or agent, in the form of payments to the Association, or if the Board
of Directors determines that the director, officer, employee or agent willfully
misrepresented factors relevant to the Board of Directors determination of
conditions  (1) or (2) above.

         G.  The indemnification provided by this Article Tenth shall not be
deemed exclusive of any other rights to which those seeking indemnification may
be entitled under any Bylaw, agreement, contract, vote of stockholders or
disinterested directors or pursuant to the direction (howsoever embodied) of
any court of  competent jurisdiction or otherwise, both as to action in his
official capacity and as to action in another capacity while holding such
office, it being the policy of the Association that indemnification of the
persons specified in Sections A and B of this Article Tenth shall be made to
the fullest extent permitted by law.  The provisions of this Article Tenth
shall not be deemed to preclude the indemnification of any person who is not
specified in Sections A or B of this Article Tenth, but whom the Association
has the power or obligation to indemnify under the provisions of applicable
federal or state law, or otherwise.  The indemnification provided by this
Article Tenth shall continue as to a person who has ceased to be a director,
officer, employee or agent and shall inure to the benefit of heirs, executors
and administrators of such person.

         H.  The association may purchase and maintain insurance on behalf of
any person who is or was a director, officer, employee or agent of the
Association, or is or was serving at the request of the Association as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise against any liability asserted and incurred
by such person, in any such capacity, or arising out of such person's status as
such, if the Association would have the power or the obligation to indemnify
such person against such liability under the provisions of this Article Tenth,
provided that the Association shall not purchase or maintain insurance coverage
for a formal order by a bank regulatory agency assessing civil money penalties
against a director, officer, employee or agent of the Association.

         I.  For purposes of this Article Tenth, references to "the
Association" shall include, in addition to the resulting company, any
constituent company (including any constituent of a
<PAGE>   15
PAGE NINE

constituent) absorbed in a consolidation or merger which, if its separate
existence had continued, would have had power and authority to indemnify its
directors, officers and employees or agents, so that any person who is or was a
director, officer, employee or agent of such constituent company as a director,
officer, employee or agent of another corporation, partnership, joint venture,
trust or other enterprise, shall stand in the same position under the
provisions of this Article Tenth with respect to the resulting or surviving
company as he would have with respect to such constituent company if its
separate existence had continued.

         ELEVENTH.  These Articles of Association may be amended at any regular
or special meeting of the shareholders by the affirmative vote of the holders
of a majority of the stock of this Association, unless the vote of the holders
of a greater amount of stock is required by law, and in that case by the vote
of the holders of such greater amount.
<PAGE>   16

                                     BYLAWS





                         DEPOSIT GUARANTY NATIONAL BANK





                              AMENDED AND ADOPTED
                           BY THE BOARD OF DIRECTORS
                                AUGUST 20, 1996
<PAGE>   17
                               TABLE OF CONTENTS

                         DEPOSIT GUARANTY NATIONAL BANK

                                     BYLAWS

<TABLE>
<CAPTION>
                                                                        PAGE NO.
                                                                        --------
<S>                                                                        <C>
ARTICLE I.    MEETINGS OF SHAREHOLDERS.                                    
                                                                           
       Section 1.1.        Annual Meeting.                                 1
       Section 1.2.        Special Meetings.                               1
       Section 1.3.        Nominations for Director.                       1
       Section 1.4.        Proxy and Teller Committee.                     1
       Section 1.5.        Proxies.                                        2
       Section 1.6.        Quorum.                                         2
                                                                           
ARTICLE II.   BOARD OF DIRECTORS.                                          
                                                                           
       Section 2.1.        Board of Directors.                             2
       Section 2.2.        Number.                                         2
       Section 2.3.        Organization Meeting.                           2
       Section 2.4.        Regular Meetings.                               2
       Section 2.5.        Special Meetings.                               2
       Section 2.6.        Quorum.                                         3
       Section 2.7.        Vacancies.                                      3
       Section 2.8.        Age Limit.                                      3
       Section 2.9.        Advisory Board.                                 3
       Section 2.10.       Honorary Directors.                             3
       Section 2.11.       Regional Advisory Board.                        3
       Section 2.12.       Secretary.                                      4
       Section 2.13        Qualifications of Directors.                    4
                                                                           
ARTICLE III.  COMMITTEES OF THE BOARD.                                     
                                                                           
       Section 3.1.        Executive Committee.                            4
       Section 3.2.        Audit Committee.                                4
       Section 3.3.        Other Committees.                               4
                                                                           
ARTICLE IV.   OFFICERS AND EMPLOYEES.                                      
                                                                           
       Section 4.1.        Chairman of the Board.                          5
       Section 4.2.        President.                                      5
       Section 4.3.        Chairman of Executive Committee.                5
       Section 4.4.        Secretary.                                      5
       Section 4.5.        Treasurer.                                      5
       Section 4.6.        Other Officers.                                 5
       Section 4.7.        Tenure of Office.                               6
       Section 4.8.        Interim Promotions, and Appointments            
                                  of Officers.                             6
       Section 4.9.        Nature of Employment and Termination            
                                  of Officers.                             6
                                                                           
ARTICLE V.    TRUST DEPARTMENT.                                            
                                                                           
       Section 5.1.        Trust Department.                               6
       Section 5.2.        Trust Officer.                                  6
       Section 5.3.        Trust Policy and Investment Committee.          7
       Section 5.4.        Trust Audit Committee.                          7
</TABLE>                                                                 
<PAGE>   18
Bank Bylaws                                                              
Table of Contents                                                        
                                                                         
Page Two                                                                 
                                                                         
<TABLE>                                                                  
<CAPTION>                                                                
                                                                        PAGE NO.
                                                                        --------
<S>                                                                        <C>
       Section 5.5.        Trust Department Files.                         7
       Section 5.6.        Trust Investments.                              7
                                                                           
ARTICLE VI.   STOCK AND STOCK CERTIFICATES.                                
                                                                           
       Section 6.1.        Transfers.                                      7
       Section 6.2.        Stock Certificates.                             7
                                                                           
ARTICLE VII.  CORPORATE SEAL.                                              8
                                                                           
ARTICLE VIII. MISCELLANEOUS PROVISIONS.                                    
                                                                           
       Section 8.1.        Fiscal Year.                                    8
       Section 8.2.        Execution of Instruments.                       8
       Section 8.3.        Records.                                        8
       Section 8.4.        Capital Expenditures.                           8
                                                                           
ARTICLE IX.   BYLAWS.                                                      
                                                                           
       Section 9.1.        Inspection.                                     9
       Section 9.2.        Amendments.                                     9
                                                                           
ARTICLE X.    POST-EMERGENCY OPERATIONS.                                   
                                                                           
       Section 10.1.       Continuity of Management.                       9
       Section 10.2.       Post-Emergency Provisions for Alternate         
                                  Location of Head Office.                 9
</TABLE>
<PAGE>   19
                         DEPOSIT GUARANTY NATIONAL BANK

                                    BYLAWS

                                   ARTICLE I

                            Meetings of Shareholders

       Section 1.1.  Annual Meeting.  The regular annual meeting of the
shareholders for the election of directors and the transaction of whatever
other business may properly come before the meeting, shall be held at the Main
Office of the Bank, 210 East Capitol Street, City of Jackson, or such other
place as the Board of Directors may designate.  Said meeting shall be held on
the third Tuesday in the month of February of each year at such time as may be
determined by the Board of Directors and stated in the notice and call of the
meeting.  Notice of such meeting shall be mailed, by first class mail, postage
prepaid, at least ten days prior to the date thereof, addressed to each
shareholder at his address appearing on the books of the bank.  If, from any
cause, an election of directors is not made on the said day, the Board of
Directors shall order the election to be held on some subsequent day, as soon
thereafter as practicable, according to the provisions of law; and notice
thereof shall be given in the manner herein provided for the annual meeting.

(Amended January 20, 1970)

       Section 1.2.  Special Meetings.  Except as otherwise specifically
provided by statute, special meetings of the shareholders may be called for any
purpose at any time by the Board of Directors or by any three or more
shareholders owning, in the aggregate, not less than twenty-five percent of the
stock of the Association.  Every such special meeting, unless otherwise
provided by law, shall be called by mailing, by first class mail, postage
prepaid, not less than ten days prior to the date fixed for such meeting, to
each shareholder at his address appearing on the books of the Association, a
notice stating the purpose of the meeting.

       Section 1.3.  Nominations for Directors.  Nominations for election to
the Board of Directors may be made by the Board of Directors or by any
stockholder of any outstanding class of capital stock of the bank entitled to
vote for the election of directors.  Nominations, other than those made by or
on behalf of the existing management of the bank, shall be made in writing and
shall be delivered or mailed to the President of the bank and to the
Comptroller of the Currency, Washington, D. C., not less than 14 days nor more
than 50 days prior to any meeting of stockholders called for the election of
directors, provided however, that if less than 21 days' notice of the meeting
is given to shareholders, such nomination shall be mailed or delivered to the
President of the bank and to the Comptroller of the Currency not later than the
close of business on the seventh day following the day on which the notice of
meeting was mailed.  Such notification shall contain the following information
to the extent known to the notifying shareholder:  (a) the name and address of
each proposed nominee;  (b) the principal occupation of each proposed nominee;
(c) the total number of shares of capital stock of the bank that will be voted
for each proposed nominee;  (d) the name and residence address of the notifying
shareholder; and  (e) the number of shares of capital stock of the bank owned
by the notifying shareholder.  Nominations not made in accordance herewith may,
in his discretion, be disregarded by the chairman of the meeting, and upon his
instructions, the vote tellers may disregard all votes cast for each such
nominee.

       Section 1.4.   Proxy and Teller Committee.  Every election of Directors
shall be managed by the Proxy and Teller Committee, which shall be  composed of
at least three (3) persons, who shall be appointed by the Chairman of the
Board.  The appointment of the Committee shall be ratified by the Board of
Directors at the meeting preceding the Annual Stockholders Meeting.  The
Committee shall tally all votes cast at the Annual Stockholders Meeting for
motions setting the number of Directors, and for the election of said
Directors, and shall certify the results thereof to the Secretary of the
Meeting, with a copy to the Secretary of the Board if different from the
Secretary of the Meeting.  The Committee, at
<PAGE>   20
Bank Bylaws
Page Two


the request of the Chairman of the Meeting, shall tally and certify the results
of any other vote at such meeting.

(Amended February 19, 1985)

       Section 1.5.  Proxies.  Shareholders may vote at any meeting of the
shareholders by proxies duly authorized in writing, but no officer or employee
of this Association shall act as proxy.  Proxies shall be valid only for one
meeting, to be specified therein, and any adjournment of such meeting.  Proxies
shall be dated and shall be filed with the records of the meeting.

       Section 1.6.  Quorum.  A majority of the outstanding capital stock,
represented in person or by proxy, shall constitute a quorum at any meeting of
shareholders, unless otherwise provided by law; but less than a quorum may
adjourn any meeting, from time to time, and the meeting may be held, as
adjourned, without further notice.  A majority of the votes cast shall decide
every question or matter submitted to the shareholders at any meeting, unless
otherwise provided by law or by the Articles of Association.


                                   ARTICLE II

                                   Directors

       Section 2.1.  Board of Directors.  The Board of Directors (hereinafter
referred to as the "Board") shall have power to manage and administer the
business and affairs of the Association.  Except as expressly limited by law,
all corporate powers of the Association shall be vested in and may be exercised
by the Board.

       Section 2.2.  Number.  The Board shall consist of not less than five nor
more than twenty-five persons, the exact number within such minimum and maximum
limits to be fixed and determined from time to time by resolution of a majority
of the full Board or by resolution of the shareholders at any meeting thereof,
provided, however, that a majority of the full Board of Directors may not
increase the number of Directors to a number which: (1) exceeds by more than
two the number of Directors last elected by shareholders where such number was
fifteen or less; and  (2) to a number which exceeds by more than four the
number of Directors last elected by shareholders where such number was sixteen
or more, but in no event shall the number of Directors exceed twenty-five.

       Section 2.3.  Organization Meeting.  The Cashier, upon receiving the
certificate of the judges, of the result of any election, shall notify the
Directors-Elect of their election and of the time at which they are required to
meet at the Main Office of the Association for the purpose of organizing the
new Board and electing and appointing officers of the Association for the
succeeding year.  Such meeting shall be appointed to be held on the day of the
election or as soon thereafter as practicable, and in any event, within thirty
days thereof.  If, at the time fixed for such meeting, there shall not be a
quorum present, the directors present may adjourn the meeting, from time to
time, until a quorum is obtained.

       Section 2.4.  Regular Meetings.  The regular meetings of the Board of
Directors shall be held, without notice, on the third Tuesday of February,
April, May, August, November and December at the Main Office.  When any regular
meeting of the Board falls upon a holiday, the meeting shall be held on the
next banking business day unless the Board shall designate some other day.  The
Directors may from time to time change the date of any regular meeting, but at
least three days' notice shall be given of the time of such meeting.

(Amended December 17, 1991)
(Previously Amended November 20, 1990)

       Section 2.5.  Special Meetings.  The Board of Directors may be called to
meet at any
<PAGE>   21
Bank Bylaws
Page Three


time upon written request of any Executive officer of the bank or member of the
Board, or upon written request of one or more stockholders representing as much
as ten per centum of the outstanding common capital stock of the bank.  All
such written requests shall be filed with the Cashier or other executive
officer and he shall be required to give notice of any such call, giving time
and place of the meeting, by any method which will effectively notify the
members of the Board.  The directors may be required to meet at any time later
than three hours after the issuance of the call for such meeting, as the
persons making the request for the meeting and the officer calling the meeting
may decide.  A meeting for all purposes may be held without notice at any time
when all directors are present and willing to meet for all or particular
purposes or when a majority are present and all others have signified their
willingness in writing that such meeting be held.

       Section 2.6.  Quorum.  A majority of the directors shall constitute a
quorum at any meeting, except when otherwise provided by law; but a less number
may adjourn any meeting, from time to time, and the meeting may be held, as
adjourned, without further notice.

       Section 2.7.  Vacancies.  When any vacancy occurs among the directors,
the remaining members of the Board, in accordance with the laws of the United
States, may appoint a director to fill such vacancy at any regular meeting of
the Board, or at a special meeting called for that purpose.

       Section 2.8.  Age Limit.  No person shall be elected to the Board of
Directors who is sixty-five years of age or older on the first day of January
immediately preceding the election of directors.  No person shall be eligible
for re- election who has more than 50% absences from Board and Committee
meetings, unexcused by the Executive Committee.

(Amended February 19, 1985)

       Section 2.9.  Advisory Board.  Immediately after the annual meeting of
stockholders, the Board of Directors which shall have been elected at such
meeting shall meet and elect an Advisory Board to the Board of Directors of not
more than twenty-five persons who are not members of the Board of Directors.
At any time when there are less than twenty- five members elected to and acting
on the Advisory Board, the Board of Directors may at any regular or special
meeting elect to the Advisory Board such additional members as they desire,
provided that the total membership of such Advisory Board shall at no time
exceed twentyfive members.  The term of office of all members of the Advisory
Board shall expire at the next annual meeting of stockholders, regardless of
when elected.  The Advisory Board shall meet with the Board of Directors at all
meetings of the Board of Directors; shall advise with the Board of Directors at
such meetings and discuss with the Board of Directors any matters coming before
the Board of Directors, but shall not be entitled to vote on any matters.  The
compensation of members of the Advisory Board shall be the same as the
compensation of members of the Board of Directors.  No person shall be elected
to the Advisory Board who was seventy (70) years of age on the first day of
January immediately preceding the election of Directors.  No person shall be
re-elected to the Advisory Board who has more than 50% absences from Advisory
Board and Committee meetings, unexcused by the Executive Committee.

(Amended February 19, 1985)

       Section 2.10.  Honorary Directors.  A retired Chief Executive Officer of
the Bank shall, upon said retirement, be eligible for election, annually, as an
Honorary Director of the Bank, with the same age limitations, voting rights and
compensation as those which govern Advisory Board members of the Bank.

       Section 2.11.  Regional Advisory Board.  The Board of Directors may from
time to time appoint such Regional Advisory Boards as it may deem desirable to
serve in connection with the operation of branch banks and may fix the number
of members of said
<PAGE>   22
Bank Bylaws
Page Four


Advisory Boards and the qualifications and duties of the members of said
Boards.

       Section 2.12.  Secretary.  The Board of Directors shall appoint a
Secretary of the Board, who is not required to be a member of the Board.  It
shall be the duty of the Secretary of the Board to keep and preserve minutes of
its meetings and to perform such other duties as may be assigned to him by the
Board.

       Section 2.13.  Qualifications of Directors.  Every Director must, during
the whole term of his service, be a citizen of the United States and at least
two-thirds of the Directors must have resided and must continue to reside in
the State of Mississippi, or within one hundred miles of the main office of the
Association for one year immediately preceding their election and during their
continuance in office.  Every director must own in his own right either shares
of the capital stock of the Association the aggregate par value of which is not
less than $1,000, or stock in another company which has control over the
Association within the meaning of Section 1841 of Title 12 of the United States
Code with either an aggregate par value, an aggregate shareholders' equity, or
an aggregate fair market value of at least $1,000.  Determination of these
values may be based on the value of the stock on the date it was purchased or
the date on which the Director became a Director, whichever is greater.  Any
Director who ceases to become an owner of the required number of shares of
stock, or who becomes disqualified in any other manner, shall thereby vacate
his place.


                                  ARTICLE III

                            Committees of the Board

       Section 3.1.  Executive Committee.  There shall be an Executive
Committee composed of not less than five nor more than fourteen members of the
Board of Directors, the exact number of which shall be fixed from time to time
by resolution of a majority of the Board of Directors.  The Chairman of the
Board and the President shall be members of this Committee. The Chairman of the
Executive Committee shall be elected by the Board of Directors.  Meetings of
the Executive Committee shall be held, without notice, on the third Tuesday of
each calendar month, except those months in which a regular meeting of the
Board of Directors is scheduled, or more frequently at the call of the Chairman
of the Committee, the Chairman of the Board or the President.  Notice of
special meetings of the Executive Committee shall be given in the manner
provided in these bylaws for special meetings of the Board of Directors.  Under
the direction and control of the Board of Directors, the Executive Committee
shall have charge and exercise complete control of all matters which may
require attention at any time between regular meetings of the Board of
Directors and shall also perform such other duties as the Board of Directors
may designate.  (Amended August 20, 1996)(Previously Amended December 19, 1967;
February 18, 1975)

       Section 3.2  Audit Committee.  There shall be an Audit Committee, which
may be joint with the parent holding company, composed of not less than four
Directors, exclusive of any active officers, appointed by the Board annually or
more often, whose duties shall include causing an annual audit to be made of
the financial statements of the Association by independent public accountants;
reviewing with internal auditors and the accountants the scope of audits,
significant accounting policies and audit conclusions; monitoring the adequacy
of accounting, financial reporting and internal control systems; discussing
with management and nominating or terminating the accountants; overseeing the
internal audit function including the selection, retention, evaluation and
compensation of the chief internal auditor; and such other duties as the Board
may designate.  The Board may designate the Audit Committee of the parent
holding company as the Audit Committee of the Association."

(Amended August 20, 1996) (Previously Amended February 19, 1985)
<PAGE>   23
Bank Bylaws
Page Five


       Section 3.3.  Other Committees.  The Board of Directors may appoint,
from time to time, from its own members, other committees of one or more
persons, for such purposes and with such powers as the Board may determine.


                                   ARTICLE IV


                             Officers and Employees

       Section 4.1.  Chairman of the Board.  The Board of Directors shall
appoint one of its members to be Chairman of the Board and Chief Executive
Officer to serve at the pleasure of the Board.  He shall preside at all
meetings of the Board of Directors.  The Chairman of the Board shall supervise
the carrying out of the policies adopted or approved by the Board.  He shall
have general executive powers, as well as the specific powers conferred by
these Bylaws.  He shall also have and may exercise such further powers and
duties as from time to time may be conferred upon, or assigned to, him by the
Board of Directors.

(Amended February 19, 1985)

       Section 4.2.  President.  The Board of Directors shall appoint one of
its members to be President of the Association.  In the absence of the
Chairman, he shall preside at any meeting of the Board.  The President shall
have general executive powers, and shall have and may exercise any and all
other powers and duties pertaining by law, regulation, or practice, to the
office of President, or imposed by these Bylaws.  He shall also have and may
exercise such further powers and duties as from time to time may be conferred
upon, or assigned to, him by the Board of Directors.

       Section 4.3.  Chairman of Executive Committee.  The Board of Directors
shall annually elect the Chairman of the Executive Committee from among the
members of the Board of Directors or the Advisory Board.  The Chairman of the
Executive Committee shall Bank preside at all meetings of said committee and
shall supervise the carrying out of the duties of such committee.  He shall
also have and may exercise such further powers and duties as from time to time
may be conferred upon, or assigned to, him by the Board of Directors.

       Section 4.4.  Secretary.  The Board of Directors shall appoint a
Secretary who shall be Secretary of the Board and of the Association, and shall
keep accurate minutes of all meetings.  He shall attend to the giving of all
notices required by these Bylaws to be given.  He shall be custodian of the
corporate seal, records, documents and papers of the Association.  He shall
provide for the keeping of proper records of all transactions of the
Association.  He shall have and may exercise any and all other powers and
duties pertaining by law, regulation or practice, to the office of the
Secretary, or Cashier, or imposed by these Bylaws.  He shall also perform such
other duties as may be assigned to him, from time to time, by the Board of
Directors.

       Section 4.5  Treasurer.  If required by the Board of Directors, the
Treasurer shall give a bond for the faithful discharge of his duties in such
sum and with such surety or sureties as the Board of Directors shall determine.
He shall have charge and custody of and be responsible for all funds and
securities of the bank, and in general perform all of the duties incident to
the office of Treasurer and such other duties as from time to time may be
assigned to him by the President, or by the Board of Directors.  The Treasurer
shall be the chief financial and the principal accounting officer of the bank.

(Added February 19, 1985)

       Section 4.6.  Other Officers.  The Board of Directors may appoint one or
more Executive Vice Presidents, Senior Vice Presidents, Vice Presidents,
Assistant Vice Bank
<PAGE>   24
Bylaws
Page Six

Presidents, Trust Officers, Assistant Secretaries, Assistant Trust Officers,
Cashiers, Assistant Cashiers, one or more Managers and Assistant Managers of
Branches and such other officers and Attorneys-infact as from time to time may
appear to the Board of Directors to be required or desirable to transact the
business of the Association.  Such officers shall respectively exercise such
powers and perform such duties as pertain to their several offices, or as may
be conferred upon, or assigned to, them by the Board of Directors, the Chairman
of the Board, or the President.

(Amended May 15, 1984)

       Section 4.7.  Tenure of Office.  An officer shall hold his office at the
pleasure of the Board of Directors, unless he resigns, becomes disqualified, or
is terminated from employment in accordance with the provisions of Section 4.9
of these bylaws.  Any vacancy occurring in the office of Chairman of the Board
Bank shall be filled promptly by the Board of Directors.

(Amended October 17, 1989)(Previously Amended February 19, 1985; May 15, 1984)

       Section 4.8.        Interim Promotions, and Appointments of Officers.
Immediately following the Annual Stockholders Meeting, all officers to be
appointed shall be appointed by the Board of Directors.  Interim appointments
shall be made by and upon the authority of the Executive Committee of the
Board.

(Amended December 17,1991) (Previously Amended Oct. 17, 1989; Added May 15,
1984)

       Section 4.9.  Nature of Employment and Termination of Officers.  Absent
a written agreement signed by the Chairman of the Board or President to the
contrary, all employment, including the employment of officers, with the
Association is at will.  Appointment or election to an office does not change
the nature of employment.  The employment of officers like that of all other
employees, may be terminated at any time, for any reason, and without further
obligation.  The employment of any officer may be terminated by and upon the
authority of the Executive Committee of the Board.

(Amended December 17, 1991) (Added October 17, 1989)


                                   ARTICLE V

                                 Trust Division

       Section 5.1.  Trust Division.  There shall be a department of the
Association known as the Trust Division which shall perform the fiduciary
responsibilities of the Association.

       Section 5.2.  Trust Officer.  There shall be an Executive Vice President
or other senior officer of this Association whose duties shall be to manage,
supervise and direct all the activities of the Trust Division.  He shall do or
cause to be done all things necessary or proper in carrying on this business of
the Trust Division in accordance with provisions of law and applicable
regulations.  He shall act pursuant to opinion of counsel where such opinion is
deemed necessary.  Opinions of counsel shall be retained on file in connection
with all important matters pertaining to fiduciary activities.  The officer
shall be responsible for all assets and documents held by the Association in
connection with fiduciary matters.

       The Board of Directors may appoint such other officers of the Trust
Division as it may deem necessary, with such duties as may be assigned.  Any
officer of the Association assigned to the Trust Division functions shall have
authority to sign documents relating to fiduciary transactions of the
Association.

(Amended February 19, 1985)
<PAGE>   25
Bank Bylaws
Page Seven

       Section 5.3.  Trust Policy and Investment Committee.  There shall be a
Trust Policy and Investment Committee of this Association composed of at least
seven members, who shall be capable and experienced officers or directors of
the Association.  This Committee shall have the overall responsibility for all
of the Trust Division policies and the implementation of same including, but
not limited to:

          Acceptance of New Business;
          Establishment of Fees;
          Administration;
          Investments;
          Account Reviews; and
          Other policy and administrative matters.

This committee shall be authorized to appoint sub-committees as it may deem
necessary to carry out the functions of the Trust Policy and Investment
Committee.  The Trust Policy and Investment Committee and all sub-committees
shall maintain proper and separate minutes.

(Amended February 19, 1985)

       Section 5.4.  Trust Audit Committee.  The Board of Directors shall
appoint a committee of at least three directors, exclusive of any active
officers of the Association, which shall, at least once during each calendar
year and within fifteen months of the last such audit make suitable audits of
the Trust Division or cause suitable audits to be made by auditors responsible
only to the Board of Directors, and at such time ascertain whether the
department has been administered in accordance with law, Regulation 9, and
sound fiduciary principles.  No active officer of the Bank may serve on the
Trust Audit Committee, as a member or as Secretary thereof.

(Amended November 20, 1979)

       Section 5.5.  Trust Division Files.  There shall be maintained in the
Trust Division files containing all fiduciary records necessary to assure that
its fiduciary responsibilities have been properly undertaken and discharged.

       Section 5.6.  Trust Investments.  Funds held in a fiduciary capacity
shall be invested in accordance with the instrument establishing the fiduciary
relationship and local law.  Where Bank such instrument does not specify the
character and class of investments to be made and does not vest in the bank a
discretion in the matter funds held pursuant to such instrument shall be
invested in investments in which corporate fiduciaries may invest under local
law.


                                   ARTICLE VI

                          Stock and Stock Certificates

       Section 6.1.  Transfers.  Shares of stock shall be transferable on the
books of the Association, and a transfer book shall be kept in which all
transfers of stock shall be recorded.  Every person becoming a shareholder by
such transfer shall, in proportion to his shares, succeed to all rights and
liabilities of the prior holder of such shares.

       Section 6.2.  Stock Certificates.  Certificates of stock shall bear the
signature of the President (which may be engraved, printed or impressed), and
shall be signed manually or by facsimile process by the Secretary, Assistant
Secretary, Cashier, Assistant Cashier, or any other officer appointed by the
Board of Directors  for that purpose,  to be known as  an
<PAGE>   26
Bank Bylaws
Page Eight


Authorized Officer, and the seal of the Association shall be engraved thereon.
Each certificate shall recite on its face that the stock represented thereby is
transferable only upon the books of the Association properly endorsed.


                                  ARTICLE VII

                                 Corporate Seal

       The President, the Cashier, the Secretary, or any Assistant Secretary,
or other officer thereunto designated by the Board of Directors, shall have
authority to affix the corporate seal to any document requiring such seal, and
to attest the same.  Such seal shall be substantially in the following form:




                                  ARTICLE VIII

                            Miscellaneous Provisions

       Section 8.1.  Fiscal Year.  The fiscal year of the Association shall be
the calendar year.

       Section 8.2.  Execution of Instruments.  All agreements, indentures,
mortgages, deeds, conveyances, transfers, certificates, declarations, receipts,
discharges, releases, satisfactions, settlements, petitions, schedules,
accounts, affidavits, bonds, undertakings, proxies and other instruments or
documents may be signed, executed, acknowledged, verified, delivered or
accepted in behalf of the Association by the Chairman of the Board, or the
President, or the Secretary, or the Cashier, or any Executive Vice President,
Senior Vice President, Vice President, or above, or, if in connection with the
exercise of fiduciary powers of the Association, by any Assistant Trust Officer
or above.  Any such instruments may also be executed, acknowledged, verified,
delivered or accepted in behalf of the Association in such other manner and by
such other officers as the Board of Directors may from time to time direct.
The provisions of this Section 8.2 are supplementary to any other provision of
these Bylaws.

(Amended February 19, 1985)
(Amended February 15, 1983)

       Section 8.3.  Records.  The Articles of Association, the Bylaws and the
proceedings of all meetings of the shareholders, the Board of Directors,
standing committees of the Board, shall be recorded in appropriate minute books
provided for the purpose.  The minutes of each meeting shall be signed by the
Secretary, Cashier or other officer appointed to act as Secretary of the
meeting.  For a period of at least ten days before any annual meeting of
shareholders, and at least five days before any special meeting of
shareholders, the minutes of the preceding meeting of shareholders and the
minutes of any other meeting of shareholders which have not been approved shall
be open to inspection by any shareholder of record at the principal office of
the bank during normal business hours.  Such minutes shall also be produced and
kept open at the time and place of the meeting, and shall be subject to the
inspection of any shareholder during the whole time of the meeting.  The
Chairman or Secretary of the shareholders meeting shall read a resume of the
minutes of such preceding meeting or meetings, which reading shall be
sufficient for entertaining a motion for their adoption.

       Section 8.4.  Capital Expenditures.  No officer or employee may cause to
be made, directly or indirectly, any capital expenditure in excess of $500,000,
but less than $1,000,000, without prior approval of a majority of the Executive
Committee, nor any capital expenditure of $1,000,000 or more, without prior
approval of a majority of the
<PAGE>   27
Bank  Bylaws
Page Nine


Board of Directors.  The term "capital expenditure" shall include any interest
in real property, or improvements thereon, or personal property.

(Added July 17, 1979)
(Amended August 19, 1980)
(Amended August 18, 1992)

                                   ARTICLE IX

                                     Bylaws

       Section 9.1.  Inspection.  A copy of the Bylaws, with all amendments
thereto, shall at all times be kept in a convenient place at the Head Office of
the Association, and shall be open for inspection to all shareholders, during
banking hours.

       Section 9.2.  Amendments.  The Bylaws may be amended, altered or
repealed, at any regular meeting of the Board of Directors, by a vote of a
majority of the whole number of the Directors.


                                   ARTICLE X

                           Post-Emergency Operations

       Section 10.1.  Continuity of Management.  In the event of an emergency
declared by the President of the United States, or person performing his
functions, or in the event of fire, flood, tornado, hurricane, damage resulting
from civil disturbances, or other disaster of sufficient severity to prevent
the conduct and management of the affairs and business of this bank, the
officers of this bank in the order of their authority, shall continue to
conduct the affairs of the bank under such guidance from the Directors as may
be available.  Three or more Directors shall constitute a quorum, in said
emergency or disaster.  In the event of said emergency or disaster, if the
Chief Executive Officer of this bank can not be located by the then acting Head
Office, or is unable to assume or to continue normal executive duties, then the
authority and duties of the Chief Executive Officer shall, without further
action of the Board of Directors, be automatically assumed by the next most
senior officer of the Bank.  Any officer who so assumes the Chief Executive
Officer position shall continue to serve until (a) he or she resigns, or (b)
until five-sixths of the other officers who are attached to the then acting
Head Office decide in writing that he or she is unable to perform said duties,
or (c) until an officer more senior than the one who assumed the Chief
Executive Officer position, shall become available to perform the duties of
Chief Executive Officer of the Bank.

       Section 10.2.  Post-Emergency Provisions for Alternate Location of the
Head Office.  During any emergency or disaster resulting in the Main Office of
the Bank being unable to function, the business ordinarily conducted at such
location shall be relocated elsewhere in suitable quarters, as may be
designated by the Board of Directors, it being contemplated that the largest
remaining Branch Office or State Branch Bank available will be utilized.
<PAGE>   28
                                                                      EXHIBIT 6
 

<TABLE>
<S>                                                                          <C>
Legal Title of Bank:  DEPOSIT GUARANTY NATIONAL BANK                         Call Date: 9/30/96  ST-BK: 28-900  FFIEC 032
Address:              210 East Capitol Street                                                                   Page RC-1
City/State/Zip:       Jackson, MS  39205
FDIC Certificate No.:      0 9 7 8 4
</TABLE>

Consolidated Report of Condition for Insured Commercial
and State-Chartered Savings Banks for September 30, 1996

All schedules are to be reported in thousands of dollars. Unless other
indicated, report the amount outstanding as of the last business day of the
quarter.


Schedule RC -- Balance Sheet

<TABLE>
<CAPTION>

                                                                          Dollar amounts in Thousands      RCON   Bil Mil Thou
ASSETS
<S>                                                                            <C>   <C>    <C>            <C>        <C>
1.  Cash and balances due from depository institutions (from Schedule RC-A):
         a.  Noninterest-bearing balances and currency and coin (1)                                        0081       257,509  
         b.  Interest-bearing balances (2)                                                                 0071            50  
2.  Securities:                                                                                                             
         a.  Held-to-maturity securities (from Schedule RC-B, column A)                                    1754       115,882  
         b.  Available-for-sale securities (from Schedule RC-B, column b)                                  1773       663,981  
3.  Federal funds sold and securities purchased under agreements to resell:                                                 
         a.  Federal funds sold                                                                            0276        97,995  
         b.  Securities purchased under agreements to resell                                               0277       105,306  
4.  Loans and lease financing receivables:
         a.  Loans and leases, net of unearned income (from Schedule RC-C)     RCON  2122   2,953,640
         b.  LESS:   Allowance for loan and lease losses                       RCON  3123      39,909
         c.  LESS:   Allocated transfer risk reserve                           RCON  3128           0
         d.  Loans and leases, net of unearned income,                         
               allowance, and reserve (item 4.1 minus 4.b and 4.c)                                         2125     2,913,731
5.  Trading assets (from Schedule RC-D)                                                                    3545         3,402
6.  Premises and fixed assets (including capitalized leases)                                               2145        84,068
7.  Other real estate owned (from Schedule RC-M)                                                           2150         2,560
8.  Investments in unconsolidated subsidiaries and associated companies 
    (from Schedule RC-M)                                                                                   2130            20
9.  Customers' liability to this bank on acceptances outstanding                                           2155            26
10. Intangible assets (from Schedule RC-M)                                                                 2143        66,052
11. Other assets (from Schedule RC-F)                                                                      2160       100,230
12. Total assets (sum of items 1 through 11)                                                               2170     4,410,812
</TABLE>

- --------------
(1) Includes cash items in process of collection and unposted debits.
(2) Includes time certificates of deposit not held for trading.


<PAGE>   29


<TABLE>
<S>                                                                          <C>
Legal Title of Bank:  DEPOSIT GUARANTY NATIONAL BANK                         Call Date: 9/30/96  ST-BK: 28-900  FFIEC 032
Address:              210 East Capitol Street                                                                   Page RC-2
City/State/Zip:       Jackson, MS  39205
FDIC Certificate No.:      0 9 7 8 4
</TABLE>

Schedule RC -- Continued

<TABLE>
<CAPTION>

                                                                          Dollar amounts in Thousands      RCON   Bil Mil Thou
<S>                                                                            <C>   <C>    <C>            <C>        <C>
LIABILITIES
13.   Deposits:
         a.  In domestic offices (sum of totals of columns A and C 
             from Schedule RC-E)                                                                           2200       3,528,400
             (1)  Noninterest-bearing (1)                                      RCON  6631     829,523
             (2)   Interest-bearing                                            RCON  6636   2,698,877
         b.  In foreign offices, Edge and Agreement subsidiaries, 
             and IBFs
             (1)   Noninterest-bearing
             (2)   Interest-bearing
14.    Federal funds purchased and securities sold under agreements 
       to repurchase:
         a.  Federal funds purchased                                                                       0278          67,355
         b.  Securities sold under agreements to repurchase                                                0279         228,623
15.      a.  Demand notes issued to the U.S. Treasury                                                      2840               0
         b.  Trading liabilities (from Schedule RC-D)                                                      3548               0
16.    Other borrowed money:
         a.  With a remaining maturity of one year or less                                                 2332         131,799
         b.  With a remaining maturity of more than one year                                               2333           7,242
17.    Mortgage indebtedness and obligations under capitalized leases                                      2910               0
18.    Bank's liability on acceptances executed and outstanding                                            2920              26
19.    Subordinated notes and debentures                                                                   3200               0
20.    Other liabilities (from Schedule RC-G)                                                              2930          33,304
21.    Total liabilities (sum of items 13 through 20)                                                      2948       3,996,749
22.    Limited-life preferred stock and related surplus                                                    3282               0
EQUITY CAPITAL
23.    Perpetual preferred stock and related surplus                                                       3838               0
24.    Common stock                                                                                        3230          16,126
25.    Surplus (exclude all surplus related to preferred stock)                                            3839         158,865
26.      a.   Undivided profits and capital reserves                                                       3632         237,546
         b.   Net unrealized holding gains (losses) on available-for-sale securities                       8434           1,526
27.    Cumulative foreign currency translation adjustments                                                 
28.    Total equity capital (sum of items 23 through 27)                                                   3210         414,063
29.    Total liabilities, limited-life preferred stock, and equity capital                                 
       (sum of items 21, 22, and 28)                                                                       3300       4,410,812


Memorandum
To be reported only with the March Report of Condition.
     1.  Indicate in this box at the right the number of the statement below that best describes the
         most comprehensive level of auditing work performed for the bank by independent external
         auditors as of any date during  1995                                                              RCON 6724      N/A

1 = Independent audit of the bank conducted in accordance with generally accepted auditing standards by a certified public
    accounting firm which submits a report on the bank.
2 = Independent audit of the bank's parent holding company conducted in accordance with generally accepted auditing standards by a
    certified public accounting firm which submits a report on the consolidated holding company (but not on the bank separately).
3 = Directors' examination of the bank conducted in accordance with generally accepted auditing standards by a certified public
    accounting firm (may be required by state chartering authority).
4 = Directors' examination of the bank performed by other external auditors (may be required by state chartering authority).
5 = Review of the bank's financial statements by external auditors.
6 = Compilation of the bank's financial statements by external auditors.
7 = Other audit procedures (excluding tax preparation work)
8 = No external audit work.

- ---------------                                                        
(1)  Includes total demand deposits and noninterest-bearing time and savings deposits.


</TABLE>



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