HALLIBURTON CO
8-A12B/A, 1996-01-16
HEAVY CONSTRUCTION OTHER THAN BLDG CONST - CONTRACTORS
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                   FORM 8-A/A
                                 Amendment No. 2


                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
    Pursuant to Section 12(b) or (g) of the Securities Exchange Act of 1934




                               HALLIBURTON COMPANY
             (Exact name of registrant as specified in its charter)


              Delaware                                    No. 73-0271280
       (State of incorporation                            (I.R.S. Employer
              or organization)                            Identification No.)


       3600 Lincoln Plaza
       500 North Akard Street
       Dallas, Texas                                         75201-3391
  (Address of principal executive offices)                   (Zip Code)







        Securities to be registered pursuant to Section 12(b)of the Act:

              Title of each class                Name of each exchange on which
              to be so registered                each class is to be registered

              Preferred Stock                    New York Stock Exchange
              Purchase Rights

        Securities to be registered pursuant to Section 12(g)of the Act:

                                      None


<PAGE>



Item 1.  Description of Securities To Be Registered.

         On May 20, 1986,  the Board of Directors  of  Halliburton  Company (the
"Company") declared a dividend of one preferred stock purchase right (a "Right")
on each  outstanding  share of  common  stock,  par value  $2.50 per share  (the
"Common  Shares"),  of the Company  payable to stockholders of record on June 2,
1986.  The terms of the  outstanding  Rights were  subsequently  modified by the
Amended and Restated  Rights  Agreement (the "First Amended  Agreement") and the
Second Amended and Restated Rights  Agreement (the "Second  Amended  Agreement")
which were approved by resolutions of the Company's  Board of Directors  adopted
February 15, 1990 and December 7, 1995, respectively.

         Pursuant to the Second Amended  Agreement,  each Right will entitle the
holder thereof from and after the  Distribution  Date (as  hereinafter  defined)
until December 15, 2005 (or, if earlier, until the redemption or exchange of the
Rights) to buy one  one-hundredth  of a share of the  Company's  Series A Junior
Participating Preferred Stock, without par value (the "Preferred Shares"), at an
exercise  price of $150.00,  subject to certain  antidilution  adjustments.  The
Rights will not be exercisable, transferable or trade separately from the Common
Shares,  until the tenth business day (the "Distribution Date") after (a) public
announcement that a person or group has acquired beneficial  ownership of 15% or
more of the  Company's  Voting  Shares  (as such term is  defined  in the Second
Amended  Agreement) or (b) a person or group has commenced or announced a tender
or  exchange  offer,  the  consummation  of which  would  result  in  beneficial
ownership by a person or group of 15% or more of the  Company's  Voting  Shares.
Prior to the  Distribution  Date,  the Rights will be  represented by the Common
Share  certificates;  separate  certificates  representing  the  Rights  will be
mailed,  however,  to holders of the Common Shares as of the Distribution  Date.
The Rights will not have any voting rights or be entitled to dividends.

         If a person or group obtains beneficial ownership of 15% or more of the
Company's  Voting  Shares,  then each  Right  (other  than  Rights  owned by the
acquiring  person and its  affiliates  and  associates)  will entitle the holder
thereof to purchase,  for the exercise  price, a number of the Company's  Common
Shares  having a then current  market value of twice the  exercise  price.  (The
Second Amended  Agreement  authorizes the Board of Directors of the Company,  at
any time prior to the acquisition of beneficial  ownership of 15% or more of the
Company's  Voting Shares by a person or group,  to reduce that percentage to the
greater of 10% or a percentage  in excess of the largest known holding of Voting
Shares if its Board of Directors  determines  that a person whose  interests are
adverse to the Company and its  shareholders  may seek to acquire control of the
Company.)

         If, after any person or group  obtains  beneficial  ownership of 15% or
more of the Company's Voting Shares, (a) the Company merges into another entity,
(b) an acquiring entity merges into the Company and Common Shares of the Company
are changed into or exchanged for other securities or assets, or (c) the Company
sells more than 50% of its assets or assets  which  produce more than 50% of the
Company's  earning  power or cash flow,  then each Right will entitle the holder
thereof to purchase,  for the exercise price, a number of shares of common stock
of the other entity engaging in such  transaction  having a current market value
of twice the exercise price.


<PAGE>




         The Rights are  redeemable at the Company's  option for $0.01 per Right
at  any  time  prior  to  the  Shares  Acquisition  Date  (the  date  of  public
announcement that a person or group has acquired beneficial  ownership of 15% or
more of the Company's  Voting  Shares).  Any such  redemption may be effected at
such time,  on such basis and with such  conditions  as the  Company's  Board of
Directors may determine.

         At any time after the close of business on the Shares  Acquisition Date
and  prior to the  acquisition  by the  acquiring  person  of 50% or more of the
outstanding  Voting Shares, the Board of Directors of the Company may redeem the
Rights (other than Rights owned by the acquiring  person and its  affiliates and
associates),  in whole or in part, by exchanging Common Shares for the Rights on
the basis of an exchange  ratio of one Common  Share for each two Common  Shares
for which a Right is then exercisable (subject to adjustment).

         As long as the Rights are  attached to the Common  Shares,  the Company
will issue one Right with each Common Share issued by the Company upon  original
issue or out of treasury in order that all such Common Shares will have attached
Rights.

         The purchase price payable, and the number of Preferred Shares or other
securities  or  property  issuable,  upon  exercise of the Rights are subject to
adjustment  from time to time to  prevent  dilution  (a) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Shares,  (b) as a result  of the grant to  holders  of the  Preferred  Shares of
certain  rights or warrants to subscribe for the Preferred  Shares,  or (c) as a
result of the  distribution  to holders of the Preferred  Shares of evidences of
indebtedness or assets  (excluding  regular periodic cash dividends or dividends
payable in Preferred  Shares) or of subscription  rights or warrants (other than
those referred to above). With certain exceptions, no adjustment in the purchase
price will be required until cumulative  adjustments require an adjustment of at
least 1% in such  purchase  price.  The  number  of  Rights  and the  number  of
Preferred  Shares  purchasable  upon  exercise of each Right are also subject to
adjustment  in the  event  of  certain  stock  dividends  on,  or  subdivisions,
combinations   or   reclassifications   of,  the  Common  Shares  prior  to  the
Distribution Date.

         The Rights  will  expire on the  earlier to occur of (a)  December  15,
2005,  or (b)  the  exchange  or  redemption  of  the  Rights.  Chemical  Mellon
Shareholder  Services,  L.L.C.,  as successor to the corporate trust business of
NCNB Texas National Bank, is the Rights Agent.

         As of December 14, 1995,  there were  114,426,820  Common Shares issued
and outstanding.  A sufficient  number of Preferred Shares has been reserved for
issuance upon exercise of the Rights.

         The Rights have certain  anti-takeover  effects.  The Rights will cause
substantial  dilution to a person or group that acquires beneficial ownership of
15% or more  of the  Company's  Voting  Shares.  The  amendments  to the  Rights
reflected in the Second  Amended  Agreement  were not adopted in response to any
takeover or change of control  proposal  regarding the Company.  The Rights will
not interfere with a merger or other business  combination approved by the Board
of Directors,  prior to the time that a person or group has acquired  beneficial
ownership of 15% or more of the Common Shares,  since the Rights may be redeemed
by the Company prior to that time.



<PAGE>


         The Second Amended and Restated  Rights  Agreement dated as of December
15, 1995 between the Company and Chemical Mellon Shareholder  Services,  L.L.C.,
as Rights Agent,  is filed as exhibit 2.1 hereto and is  incorporated  herein by
reference.  The foregoing description of the Rights is qualified in its entirety
by reference to such exhibit.

Item 2.  Exhibits.

          2.1      Second  Amended and  Restated  Rights  Agreement  dated as of
                   December 15, 1995, between  Halliburton  Company and Chemical
                   Mellon  Shareholder  Services,  L.L.C. as Rights Agent, which
                   includes the form of Right Certificate as Exhibit A. Pursuant
                   to the Second Amended and Restated  Rights  Agreement,  Right
                   Certificates  will  not  be  distributed  until  as  soon  as
                   practicable after the Distribution Date (as therein defined).

         Pursuant to the  requirements of Section 12 of the Securities  Exchange
Act of 1934, the registrant has duly caused this Amendment No. 2 to Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized.


                                                            HALLIBURTON COMPANY
                                                                (Registrant)



Date:  January 16, 1996                        By:  /s/ Robert M. Kennedy
                                                    ------------------------
                                                    Name:  Robert M. Kennedy
                                                    Title:  Vice President-Legal











<PAGE>




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




                               HALLIBURTON COMPANY

                                       AND

                   Chemical Mellon Shareholder Services L.L.C.

                                  Rights Agent



                           Second Amended and Restated
                                Rights Agreement


                          Dated as of December 15, 1995



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



<PAGE>



<TABLE>
<CAPTION>
                                TABLE OF CONTENTS


                                                                                                               Page


Exhibit  ........................................................................................................ii

<S>               <C>                                                                                            <C>
Section 1.        Certain Definitions.............................................................................1

Section 2.        Appointment of Rights Agent.....................................................................7

Section 3.        Issue of Right Certificates.....................................................................7

Section 4.        Form of Right Certificates......................................................................9

Section 5.        Execution, Authentication and Delivery.........................................................10

Section 6.        Registration, Registration of Transfer and Exchange............................................11

Section 7.        Mutilated, Destroyed, Lost and Stolen Right Certificates.......................................12

Section 8.        Exercise of Rights; Purchase Price; Expiration Date of Rights..................................12
                  
Section 9.        Cancellation and Destruction of Right Certificates.............................................13

Section 10.       Reservation and Availability of Shares.........................................................13

Section 11.       Record Date....................................................................................14

Section 12.       Adjustment of Purchase Price, Number of Shares or Number of Rights.............................15
                  
Section 13.       Certificate of Adjusted Purchase Price or Number of Shares.....................................20
                  
Section 14.       Consolidation, Merger or Sale or Transfer of Assets or Earning Power...........................21
                  
Section 15.       Fractional Rights and Fractional Shares........................................................23

Section 16.       Rights of Action...............................................................................24

Section 17.       Agreement of Right Holders.....................................................................24

Section 18.       Right Certificate Holder Not Deemed a Stockholder..............................................25

                                                      -i-

<PAGE>




Section 19.       Concerning the Rights Agent....................................................................25

Section 20.       Duties of Rights Agent.........................................................................25

Section 21.       Merger or Consolidation or Change of Name of Rights Agent......................................27
                  
Section 22.       Change of Rights Agent.........................................................................28

Section 23.       Issuance of New Right Certificates.............................................................28

Section 24.       Redemption.....................................................................................28

Section 25.       Mandatory Redemption and Exchange..............................................................29

Section 26.       Notice of Certain Events.......................................................................30

Section 27.       Securities Laws Registrations..................................................................31

Section 28.       Notices........................................................................................32

Section 29.       Supplements and Amendments.....................................................................32

Section 30.       Successors.....................................................................................33

Section 31.       Benefits of this Agreement.....................................................................33

Section 32.       Severability...................................................................................33

Section 33.       Governing Law..................................................................................33

Section 34.       Counterparts...................................................................................33

Section 35.       Descriptive Headings...........................................................................33

Section 36.       Effective Date.  ..............................................................................33



- --------------
Exhibit A -- Form of Right Certificate
</TABLE>



                                      -ii-

<PAGE>



         This Second Amended and Restated Rights Agreement, dated as of December
15,  1995,  is  between  Halliburton   Company,  a  Delaware   corporation  (the
"Company"),  and Chemical  Mellon  Shareholder  Services,  L.L.C.,  a New Jersey
limited liability company, as Rights Agent.

         WHEREAS,  the Board of Directors of the Company  previously  authorized
and  declared  a  dividend  of one Right for each  Common  Share of the  Company
outstanding on June 2, 1986, and previously  further  authorized the issuance of
one Right with  respect to each  Common  Share  that  shall  become  outstanding
between June 2, 1986 and the earlier of the  Distribution  Date,  the Redemption
Date and the Final Expiration Date; and

         WHEREAS, the Board of Directors of the Company previously directed that
the terms and conditions under which the Rights are to be distributed, including
without limitation those affecting the exercise thereof, the securities or other
property to be  acquired  thereby and the  purchase  price to be paid  therefor,
shall be set forth in a written agreement between the Company and a rights agent
made for the  benefit of the  holders  of the  Rights to the extent so  provided
therein; and

         WHEREAS,  the Company and  RepublicBank  Dallas,  N.A., as  predecessor
Rights Agent,  previously entered into that certain Rights Agreement dated as of
May 20, 1986 (the "Initial Agreement"); and

         WHEREAS,  the NCNB Texas National Bank succeeded to the corporate trust
business of the RepublicBank Dallas, N.A., pursuant to Section 21 of the Initial
Agreement and became the successor Rights Agent hereunder; and

         WHEREAS,  the Company and NCNB Texas  National  Bank,  as Rights Agent,
entered into the Amended and Restated  Rights  Agreement as of February 15, 1990
(the "First Amended Agreement"); and

          WHEREAS,   Chemical  Mellon  Shareholder  Services,  L.L.C.  (formerly
Chemical  Shareholders  Services  Group,  Inc.) succeeded to the corporate trust
business of NCNB Texas  National  Bank and,  pursuant to Section 21 of the First
Amended Agreement, became the successor Rights Agent thereunder; and

         WHEREAS,  Company and Chemical Mellon Shareholder Services,  L.L.C., as
successor  Rights  Agent  desire  that the  Initial  Agreement  be  amended  and
supplemented  in certain  respects and that the First Amended  Agreement,  as so
amended and supplemented,  be restated in its entirety, effective as of the date
first above written (the First Amended Agreement,  together with such amendments
and  supplements  as set  forth  in this  Second  Amended  and  Restated  Rights
Agreement, being hereafter referred to as this "Agreement").

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
agreements herein set forth, the parties hereto agree as follows:

          Section 1. Certain  Definitions.  For purposes of this Agreement,  the
following terms shall have the meanings indicated:
                                                     

<PAGE>


          "Acquiring  Person" shall mean any Person who or which,  together with
all Affiliates and Associates of such Person,  shall be the Beneficial  Owner of
15% or more of the Voting Shares of the Company then outstanding,  but shall not
include the Company, any Subsidiary of the Company, any employee benefit plan of
the Company or any Subsidiary of the Company or any entity holding Voting Shares
for or pursuant to any such plan. Notwithstanding the foregoing, no Person shall
become an "Acquiring Person" as the result of an acquisition of Voting Shares by
the Company which, by reducing the number of shares  outstanding,  increases the
proportionate  number of shares beneficially owned by such Person to 15% or more
of the Voting Shares of the Company then outstanding;  provided,  however, that,
if a Person  shall  become  the  Beneficial  Owner of 15% or more of the  Voting
Shares of the  Company  then  outstanding  by reason of share  purchases  by the
Company and shall,  after such share purchases by the Company and at a time when
such Person is the  Beneficial  Owner of 15% or more of the Voting Shares of the
Company then  outstanding,  become the Beneficial Owner of any additional Voting
Shares of the  Company,  then such  Person  shall be deemed to be an  "Acquiring
Person".  Notwithstanding  the  foregoing,  any  Person who has  reported  or is
required to report such ownership (but who is the Beneficial  Owner of less than
20% of the  outstanding  Common Shares of the Company) on Schedule 13G under the
Exchange Act (or any comparable or successor  reporting form) or on Schedule 13D
under the Exchange Act (or any  comparable  or successor  reporting  form) which
Schedule  13D does not state any  intention  or reserve  the right to control or
influence  the  management  or  policies  of the Company or engage in any of the
actions  specified in Item 4 of such Schedule (other than the disposition of the
Common Shares) and,  within ten Business Days of being  requested by the Company
to advise it  regarding  the same,  certifies  to the  Company  that such Person
acquired  Common Shares in excess of 14.9% of the  outstanding  Common Shares of
the Company  inadvertently  or without  knowledge of the terms of the Rights and
who, together with all such Person's Affiliates and Associates,  thereafter does
not acquire  additional Common Shares while being the Beneficial Owner of 15% or
more of the outstanding Common Shares of the Company; provided, however, that if
the Person requested so to certify fails to do so within ten Business Days, then
such Person  shall  become an Acquiring  Person  immediately  after such ten day
period.
            
          "Agreement"  shall  mean  this  Second  Amended  and  Restated  Rights
Agreement as hereafter amended from time to time.

          "Affiliate"  and  "Associate"  shall  have  the  respective   meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations  under
the Exchange Act as in effect on the date of this Agreement.

          A Person shall be deemed the "Beneficial Owner" of and shall be deemed
to "own beneficially" any securities which (without duplication):

                                       -2-

<PAGE>



          (i) such  Person  or any of such  Person's  Affiliates  or  Associates
beneficially owns, directly or indirectly,  within the meaning of either Section
13 or 16 of the Exchange Act;

          (ii) such Person or any of such Person's  Affiliates or Associates has
(A) the right to acquire (whether such right is exercisable  immediately or only
after  the  passage  of  time)  pursuant  to  any   agreement,   arrangement  or
understanding (other than customary agreements with and between underwriters and
selling  group  members  with  respect  to  a  bona  fide  public   offering  of
securities),  or upon the exercise of conversion rights, exchange rights, rights
(other than these Rights),  warrants or options, or otherwise;  or (B) the right
to vote pursuant to any agreement, arrangement or understanding; or

          (iii) are  beneficially  owned,  directly or indirectly,  by any other
Person with which such Person or any of such  Person's  Affiliates or Associates
has any agreement, arrangement or understanding (other than customary agreements
with and between  underwriters  and selling group members with respect to a bona
fide public  offering of  securities)  for the  purpose of  acquiring,  holding,
voting or disposing of any securities of the Company;  provided,  however, that,
for purposes of each clause of this definition, a Person shall not be deemed the
Beneficial Owner of, or to own beneficially,  securities  tendered pursuant to a
tender or  exchange  offer  made by or on  behalf of such  Person or any of such
Person's  Affiliates or Associates  until such tendered  securities are accepted
for purchase or exchange;  and  provided,  further,  that,  for purposes of each
clause of this definition, a Person shall not be deemed the Beneficial Owner of,
or to own beneficially,  any security as a result of any agreement,  arrangement
or  understanding  to vote such  security  if such  agreement,  arrangement,  or
understanding  (1) arises solely from a revocable proxy or consent given to such
Person in response to a public proxy or consent  solicitation  made pursuant to,
and in accordance with, the applicable rules and regulations  promulgated  under
the Exchange Act and (2) is not also then  reportable  on Schedule 13D under the
Exchange Act (or any comparable or successor report).

          Notwithstanding  anything  in this  definition  to the  contrary,  the
phrase "then  outstanding",  when used with  reference to a Person's  Beneficial
Ownership  of  securities  of the Company  (or to the number of such  securities
"beneficially  owned"), shall mean the number of such securities then issued and
outstanding together with the number of such securities not then actually issued
and outstanding which such Person would be deemed to own beneficially hereunder.

          "Business  Day" shall mean any day other than a Saturday,  Sunday or a
day on which  banking  institutions  in the  State of Texas  are  authorized  or
obligated by law or executive order to close.


                                       -3-

<PAGE>


          "Close of  Business"  on any given date  shall mean 5:00 P.M.,  Dallas
time, on such date; provided,  however,  that if such date is not a Business Day
it shall mean 5:00 P.M., Dallas time, on the next succeeding Business Day.

          "Closing  Price",  with respect to any  security,  shall mean the last
sale  price,  regular  way,  on a specific  Trading Day or, in case no such sale
takes  place on such  Trading  Day,  the  average of the  closing  bid and asked
prices,  regular way, in either case as reported in the  principal  consolidated
transaction  reporting  system with respect to securities  listed or admitted to
trading on the New York Stock  Exchange or, if such  security is not then listed
or  admitted  to trading  on the New York Stock  Exchange,  as  reported  in the
principal  consolidated  transaction reporting system with respect to securities
listed on the principal national  securities exchange on which the such security
is listed or  admitted  to trading  or, if such  security  is not then listed or
admitted to trading on any national securities  exchange,  the last quoted price
or, if not so quoted,  the  average of the high bid and low asked  prices in the
over-the-counter  market, as reported by the National  Association of Securities
Dealers,  Inc. Automated Quotations System or such other system then in use, or,
if on any such Trading Day such security is not quoted by any such organization,
the average of the closing bid and asked prices as  furnished by a  professional
market maker making a market in such security selected by the Board of Directors
of the Company.  If such  security is not publicly  held or so listed or traded,
"Closing  Price"  shall  mean  the  fair  value  per  unit of such  security  as
determined  in good  faith  by the  Board of  Directors  of the  Company,  whose
determination  shall be described and the Closing Price set forth in a statement
filed with the Rights Agent.

          "Common  Shares" when used with  reference  to the Company  shall mean
shares of capital stock of the Company  which have no preference  over any other
class of stock with respect to dividends or assets,  which are not redeemable at
the option of the  Company  and with  respect to which no  sinking,  purchase or
similar fund is provided and shall  initially  mean the shares of Common  Stock,
par value $2.50, of the Company. "Common Shares" when used with reference to any
Person other than the Company  shall,  if used with  reference to a corporation,
mean the capital stock (or equity  interest)  with the greatest  voting power of
such other Person or, if such other Person is a  Subsidiary  of another  Person,
the Person or Persons which ultimately control such first-mentioned  Person and,
if used with  reference to any other  Person,  mean the equity  interest in such
Person (or, if the net worth  determined in accordance  with generally  accepted
accounting  principles of another  Person which  controls  such  first-mentioned
Person is greater than such first-mentioned Person, then such other Person) with
the greatest  voting power or managerial  power with respect to the business and
affairs of such Person.

          "Company" shall mean Halliburton Company, a Delaware corporation,  and
its successors.

          "Company Order" means a written request or order signed in the name of
the Company by its Chairman of the Board, its President or a Vice President, and
by its

                                       -4-

<PAGE>



Treasurer, an Assistant Treasurer,  its Secretary or an Assistant Secretary, and
delivered to the Rights Agent.

          "Corporate  Trust  Office"  means the  principal  office of the Rights
Agent at which it administers its corporate  trust business,  which, in the case
of  Chemical  Mellon  Shareholders  Services,  L.L.C.,  shall,  until  hereafter
changed, be its office at 2323 Bryan Street, Suite 2300, Dallas, Texas 75201.

          "Distribution  Date" shall mean the earlier of (i) the tenth  Business
Day after the Shares  Acquisition  Date or (ii) the tenth  Business Day (or such
later date as may be  determined  by action of the Board of  Directors  prior to
such  time  as any  Person  becomes  an  Acquiring  Person)  after  the  date of
commencement  by any Person  (other  than the  Company,  any  Subsidiary  of the
Company,  any  employee  benefit  plan of the Company or any  Subsidiary  of the
Company, or any entity holding Voting Shares for or pursuant to the terms of any
such  plan)  of,  or after  the date of the  first  public  announcement  of the
intention of any Person (other than the Company,  any Subsidiary of the Company,
any employee  benefit plan of the Company or any  Subsidiary of the Company,  or
any entity  holding Voting Shares for or pursuant to the terms of any such plan)
to commence,  a tender or exchange offer the  consummation of which would result
in  any  Person  becoming  the  Beneficial  Owner  of 15% or  more  of the  then
outstanding Voting Shares of the Company; provided,  however, that an occurrence
described in clause (ii) of this definition above shall not cause the occurrence
of the Distribution  Date if the Board of Directors of the Company shall,  prior
to such  tenth  Business  Day (or such later date as  described  in clause  (ii)
above),  determine  that such  tender or  exchange  offer is  spurious,  unless,
thereafter,  the  Board  of  Directors  of the  Company  shall  make a  contrary
determination,  in which event the Distribution Date shall occur on the later to
occur of such tenth Business Day (or such later date as described in clause (ii)
above) and the date of such latter determination.

          "Exchange  Act" shall mean the  Securities  Exchange  Act of 1934,  as
amended, and any successor statute thereto.

          "Final  Expiration  Date" shall mean the Close of Business on December
15, 2005.

          "First  Amended  Agreement"  shall have the  meaning  set forth in the
recitals to this Agreement.

          "Initial  Agreement"  shall have the meaning set forth in the recitals
to this Agreement.

          "Person" shall mean any individual,  firm,  corporation,  partnership,
limited partnership,  trust or other entity, and shall include any successor (by
merger or otherwise ) of such entity.

                                       -5-

<PAGE>



          "Preferred  Shares"  shall  mean  shares  of the  Company's  currently
authorized Series A Junior Participating Preferred Stock, without par value.

          "Principal  Party"  shall have the  meaning  ascribed  to such term in
Section 14(b).

          "Purchase  Price"  shall mean the price at which the holder of a Right
may,  subject  to the terms  and  conditions  of this  Agreement,  purchase  one
one-hundredth (1/100) of a Preferred Share (which, initially, is as set forth in
Section 8(b) hereof),  as such price shall be adjusted  pursuant to the terms of
this Agreement.

          "Redemption Date" shall mean the time at which the Rights are redeemed
pursuant  to  Section  24  herein  or the time at which  all of the  Rights  are
mandatorily redeemed and exchanged pursuant to Section 25 hereof.

          "Redemption  Price" shall have the meaning  specified in Section 24(b)
herein.
                
          "Right" shall mean one preferred  share purchase right which initially
represents  the  right  of  the  registered   holder  thereof  to  purchase  one
one-hundredth  (1/100) of a  Preferred  Share upon the terms and  subject to the
conditions herein set forth.

          "Right  Certificate"  shall mean a certificate,  in substantially  the
form of Exhibit A  attached  to this  Rights  Agreement,  evidencing  the Rights
registered in the name of the holder thereof.

          "Rights  Agent"  shall  mean  Chemical  Mellon  Shareholder  Services,
L.L.C.,  a New Jersey  limited  liability  company,  and any  successor  thereto
appointed in accordance with the terms hereof,  in its capacity as agent for the
Company and the holders of the Rights pursuant to this Agreement.

          "Rights  Register"  and  "Rights  Registrar"  shall have the  meanings
specified in Section 6.

          "Shares  Acquisition  Date"  shall  mean  the  first  date  of  public
announcement  (which for  purposes  of this  definition  shall  include  without
limitation  a report  filed  pursuant to section  13(d) or Section  16(a) of the
Exchange Act) by the Company or an Acquiring Person that an Acquiring Person has
become such.

          "Subsidiary"  of any Person shall mean any corporation or other entity
of which a majority of the outstanding  capital stock or other equity  interests
having ordinary  voting power in the election of directors or similar  officials
is owned, directly or indirectly, by such Person.


                                       -6-

<PAGE>


          "Summary  of  Rights"  shall  mean a Summary  of  Rights  to  Purchase
Preferred Shares in substantially  the form attached as Exhibit C to the Initial
Agreement.

          "Trading  Day"  shall  mean  a day on  which  the  principal  national
securities  exchange on which any of the Voting Shares of the Company are listed
or admitted to trading is open for the  transaction  of business  or, if none of
the  Voting  Shares of the  Company  is listed or  admitted  to  trading  on any
national stock exchange, a Business Day.

          "Voting  Shares"  shall mean (i) the Common  Shares of the Company and
(ii) any other shares of capital stock of the Company entitled to vote generally
in the election of directors or entitled to vote together with the Common Shares
in respect of any merger or  consolidation  of the  Company,  any sale of all or
substantially  all of the Company's  assets or any  liquidation,  dissolution or
winding up of the Company.  Whenever any provision of this Agreement  requires a
determination  of  whether a number  of Voting  Shares  comprising  a  specified
percentage  of such Voting Shares is, was or will be  beneficially  owned or has
been voted, tendered, acquired, sold or otherwise disposed of or a determination
of whether a Person has offered or proposed to acquire a number of Voting Shares
comprising  such specified  percentage,  the number of Voting Shares  comprising
such specified  percentage of Voting Shares shall,  subject to its provisions of
the definition in this Section 1(a) of "Beneficial Owner", in every such case be
deemed to be the number of Voting Shares comprising the specified  percentage of
all the Company's then outstanding Voting Shares.

          "Wholly-Owned  Subsidiary"  of a Person shall mean any  corporation or
other entity all the  outstanding  capital  stock or other  equity  interests of
which  having  ordinary  voting  power in the  election of  directors or similar
officials  (other than  directors'  qualifying  shares or similar  interest) are
owned, directly or indirectly, by such Person.

          Section 2.  Appointment of Rights Agent.  The Company hereby  appoints
the Rights  Agent to act as agent for the  Company and the holders of the Rights
(who, in accordance with Section 3 hereof,  shall prior to the Distribution Date
also be the holders of the Common Shares of the Company) in accordance  with the
terms  and  conditions   hereof,  and  the  Rights  Agent  hereby  accepts  such
appointment.  The Company may from time to time appoint such co-Rights Agents as
it may deem necessary or desirable.

          Section  3. Issue of Right  Certificates.  (a) From June 2, 1986 until
the date of this Agreement,  Rights  outstanding under the Initial Agreement and
the First Amended  Agreement have been  evidenced  (subject to the provisions of
paragraph  (b) of this Section 3) by the  Certificates  for  outstanding  Common
Shares of the Company and not by separate Right  Certificates,  and the right to
receive  Right  Certificates  under the Initial  Agreement and the First Amended
Agreement has been  transferable  only in connection with the transfer of Common
Shares  of the  Company.  From and after  the date of this  Agreement  until the
Distribution  Date,  (i)  outstanding  Rights will be evidenced  (subject to the
provisions  of  paragraph  (b)  of  this  Section  3) by  the  certificates  for
outstanding Common Shares of the Company and not by separate Right Certificates,
and (ii) the right to receive

                                       -7-

<PAGE>



Right  Certificates will be transferable only in connection with the transfer of
Common  Shares of the Company.  As soon as  practicable  after the  Distribution
Date, the Rights Agent will send, by first-class, insured, postage-prepaid mail,
to each  record  holder  of  Common  Shares  of the  Company  as of the Close of
Business on the  Distribution  Date,  at the address of such holder shown on the
stock transfer records of the Company, a Right Certificate  evidencing one Right
for each Common Share so held. From and after the Distribution  Date, the Rights
will be evidenced solely by such Right Certificates.

         (b) The Company has  previously  sent to the holder of Common Shares of
the Company a copy of the Summary of Rights  described in the Initial  Agreement
in accordance with the terms of the Initial  Agreement,  and has otherwise fully
complied  through the date of this Agreement with the provisions of Section 3 of
the Initial  Agreement and the First Amended  Agreement.  With respect to Common
Shares  of  the  Company  outstanding  on  the  date  of  this  Agreement,   the
certificates  evidencing such Common Shares shall,  together with copies of such
Summary of Rights,  thereafter  also  evidence the  outstanding  Rights (as such
Rights have been or shall be amended and  supplemented)  previously  distributed
with respect thereto until the earlier of the  Distribution  Date or the date of
surrender  thereof to the Company's  transfer agent for registration or transfer
of such  Common  Shares.  Until the  Distribution  Date  (or,  if  earlier,  the
Redemption Date or Final  Expiration  Date),  the surrender for  registration of
transfer  or  exchange  of any  certificate  for  Common  Shares of the  Company
outstanding as of the Close of Business on the date of this  Agreement,  with or
without a copy of the Summary of Rights attached thereto,  shall also constitute
the surrender for registration of transfer or exchange of the outstanding Rights
associated with the Common Shares represented thereby.

         (c) The Company has, prior to the date of this Agreement, complied with
the  provisions  of section 3(c) of the Initial  Agreement and the First Amended
Agreement. The Company agrees that, at any time after the date of this Agreement
and prior to the  Distribution  Date at which it issues any of its Common Shares
upon original issue or out of treasury,  it will concurrently  distribute to the
holder of such Common Shares one Right for each such Common  Share,  which Right
shall be subject to the terms and provisions of this Agreement and will evidence
the right to purchase the same number of one one-hundredths of a Preferred Share
at the same Purchase Price as the Rights then outstanding.

         (d)  Certificates for Common Shares of the Company issued after June 2,
1986 and  prior to the date of this  Agreement,  whether  upon  registration  of
transfer  or exchange of such  Common  Shares or upon  original  issue or out of
treasury,  have had impressed on, printed on, written on or otherwise affixed to
them the legend  required by  subsection  3(d) of the Initial  Agreement and the
First Amended  Agreement.  Certificates  for Common Shares of the Company issued
after  the  date of this  Rights  Agreement  but  prior to the  earliest  of the
Distribution  Date, the Redemption Date and the Final Expiration  Date,  whether
upon  registration of transfer or exchange of such Common Shares  outstanding on
the date of this Agreement or upon original issue or out of treasury thereafter,
shall have impressed on, printed on, written on or otherwise affixed to them the
following legend:


                                       -8-

<PAGE>



                  This certificate also evidences and entitles the holder hereof
         to certain Rights as set forth in a Second Amended and Restated  Rights
         Agreement between  Halliburton  Company and Chemical Mellon Shareholder
         Services,   L.L.C.,   dated  as  of  December  15,  1995  (the  "Rights
         Agreement"),  the  terms of which  are  hereby  incorporated  herein by
         reference  and a copy of  which is on file at the  principal  executive
         offices of  Halliburton  Company.  Under certain  circumstances  as set
         forth  in the  Rights  Agreement,  such  Rights  will be  evidenced  by
         separate   certificates  and  will  no  longer  be  evidenced  by  this
         certificate.  Halliburton  Company  will  mail  to the  holder  of this
         certificate a copy of the Rights Agreement without charge after receipt
         of a written request  therefor.  As described in the Rights  Agreement,
         Rights issued to or acquired by any Acquiring Person (as defined in the
         Rights Agreement) shall, under certain  circumstances,  become null and
         void.

With respect to  certificates  containing the legend required by subsection 3(d)
of the Initial  Agreement,  the First Amended Agreement or the foregoing legend,
until the  Distribution  Date,  outstanding  Rights  associated  with the Common
Shares of the Company  represented  by such  certificates  shall be evidenced by
such  certificates  alone,  and  the  surrender  of  any  such  certificate  for
registration  of transfer or exchange  of the Common  Shares  evidenced  thereby
shall also  constitute  surrender  for  registration  of transfer or exchange of
outstanding   Rights  (as  such  Rights  have  been  or  shall  be  amended  and
supplemented) associated with the Common Shares represented thereby.

         (e) If the Company purchases or acquires any of its Common Shares after
the date hereof but prior to the Distribution  Date, any Rights  associated with
such  Common  Shares  shall be deemed  canceled  and retired so that the Company
shall not be entitled to exercise any Rights  associated  with the Common Shares
which are no longer outstanding.

         Section 4. Form of Right  Certificates.  The form of Right Certificates
(and the forms of election to purchase  Preferred  Shares (or other  securities)
and of  assignment  to be  printed  on the  reverse  thereof)  shall in form and
substance be substantially  the same as Exhibit A hereto and may have such marks
of  identification  or designation  and such legends,  summaries or endorsements
printed thereon as the Company may deem  appropriate and as are not inconsistent
with the  provisions  of this  Agreement,  as may be required to comply with any
applicable law or with any rule or regulation made pursuant  thereto or with any
rule or  regulation  of any stock  exchange on which the Rights may from time to
time be listed or as may be  necessary  to  conform  to  usage.  Subject  to the
provisions of Section 23 hereof, the Right Certificates,  whenever issued, shall
be  dated as of the  date of  authentication  thereof,  but,  regardless  of any
adjustments  of the Purchase  Price or the number of Preferred  Shares (or other
securities) as to which a Right is exercisable  (whether pursuant to the Initial
Agreement, the First Amended Agreement,  this Agreement or any future amendments
or supplements to this  Agreement),  or both,  occurring  after June 2, 1986 and
prior to the date of such authentication,  such Right Certificates may, on their
face, without invalidating or otherwise affecting any such adjustment, expressly
entitle the holders  thereof to purchase such number of Preferred  Shares at the
Purchase Price per one one-hundredth  (1/100) of a Preferred Share as to which a
Right

                                       -9-

<PAGE>



would be exercisable if the  Distribution  Date were the date of this Agreement;
no adjustment of the Purchase Price or the number of Preferred  Shares (or other
securities) as to which a Right is exercisable,  or both, effected subsequent to
the date of  authentication  of any Right  Certificate  shall be  invalidated or
otherwise  affected by the fact that such adjustment is not expressly  reflected
on the face or in the provisions of such Right Certificate.

         Pending the preparation of definitive Right  Certificates,  the Company
may execute,  and upon Company  Order the Rights  Agent shall  authenticate  and
send, by first-class,  insured,  postage-prepaid  mail, to each record holder of
Common  Shares of the Company as of the Close of  Business  on the  Distribution
Date, temporary Right Certificates which are printed, lithographed, typewritten,
mimeographed or otherwise produced  substantially of the tenor of the definitive
Right  Certificates  in lieu of which they are issued and with such  appropriate
insertions,  omissions,  substitutions  and  other  variations  as the  officers
executing such Right Certificates may determine, as evidenced by their execution
of such Right Certificates.

         If  temporary  Right  Certificates  are issued,  the Company will cause
definitive Right Certificates to be prepared without  unreasonable  delay. After
the  preparation  of  definitive   Right   Certificates,   the  temporary  Right
Certificates  shall be  exchangeable  for definitive  Right  Certificates,  upon
surrender of the temporary  Right  Certificates at the Corporate Trust Office of
the Rights Agent,  without charge to the holder. Upon surrender for cancellation
of any one or more temporary Right  Certificates,  the Company shall execute and
the Rights Agent shall authenticate and deliver in exchange therefor one or more
definitive  Right  Certificates,  evidencing  a like number of Rights.  Until so
exchanged, the temporary Right Certificates shall in all respects be entitled to
the same benefits under this Agreement as definitive Right Certificates.

         Section  5.   Execution,   Authentication   and  Delivery.   The  Right
Certificates  shall be executed on behalf of the Company by its  Chairman of the
Board,  its President or one of its Vice  Presidents,  under its corporate  seal
reproduced   thereon   attested  by  its  Secretary  or  one  of  its  Assistant
Secretaries.  The signature of any of these  officers on the Right  Certificates
may be manual or facsimile.

         Right  Certificates  bearing  the  manual or  facsimile  signatures  of
individuals  who were at any time the proper  officers of the Company shall bind
the Company, notwithstanding that such individuals or any of them have ceased to
hold such  officers  prior to the  authentication  and  delivery  of such  Right
Certificates or did not hold such offices at the date of  authentication of such
Right  Certificates.  At any time and from time to time after the  execution and
delivery of this Agreement and prior to the  Distribution  Date, the Company may
deliver  Right  Certificates  executed  by the  Company to the Rights  Agent for
authentication,  together  with a  Company  Order  for  the  authentication  and
delivery of such Right  Certificates;  and the Rights Agent in  accordance  with
such Company Order shall  authenticate and deliver such Right Certificates as in
this Agreement provided and not otherwise.


                                      -10-

<PAGE>



         No Right  Certificate  shall be  entitled  to any  benefit  under  this
Agreement or be valid or obligatory for any purpose unless there appears on such
Right  Certificate a certificate  of  authentication  substantially  in the form
provided for herein executed by the Rights Agent by manual  signature,  and such
certificate upon any Right Certificate shall be conclusive evidence and the only
evidence that such Right  Certificate has been duly  authenticated and delivered
hereunder.

         Section 6.  Registration,  Registration of Transfer and Exchange.  From
and after the Distribution  Date and prior to the earlier of the Redemption Date
and the  Final  Expiration  Date,  the  Company  shall  cause  to be kept at the
Corporate  Trust  Office  of the  Rights  Agent a  Rights  Register  (a  "Rights
Register") in which, subject to such reasonable regulations as it may prescribe,
the Company  shall provide for the  registration  of Right  Certificates  and of
transfers of Rights.  The Rights Agent is hereby  appointed  the  registrar  and
transfer agent (the "Rights  Registrar")  for the purpose of  registering  Right
Certificates  and  transfers  of Rights as herein  provided and the Rights Agent
agrees to maintain such Rights Register in accordance  with such  regulations so
long as it continues to be designated as Rights Registrar hereunder.

         Upon surrender to the Rights Agent for  registration of transfer of any
Right  Certificate,  the  Company  shall  execute,  and the Rights  Agent  shall
authenticate  and  deliver,  in  the  name  of  the  designated   transferee  or
transferees,  one or more new Right  Certificates  evidencing  a like  number of
Rights.

         At the option of the holder,  Right  Certificates  may be exchanged for
other  Right  Certificates  upon  surrender  of  the  Right  Certificates  to be
exchanged  to  the  Rights  Agent.   Whenever  any  Right  Certificates  are  so
surrendered for exchange,  the Company shall execute, and the Rights Agent shall
authenticate  and deliver,  the Right  Certificates  which the holder making the
exchange is entitled to receive.

         All Right  Certificates  issued  upon any  registration  of transfer or
exchange of Right  Certificates  shall be the valid  obligations of the Company,
evidencing  the same  Rights,  and  entitled  to the same  benefits  under  this
Agreement,  as the Right  Certificates  surrendered  upon such  registration  of
transfer or exchange.

         Every Right  Certificate  presented or surrendered for  registration of
transfer or exchange  shall (if so required by the Company or the Rights  Agent)
be duly endorsed,  or  accompanied  by a written  instrument of transfer in form
satisfactory  to the  Company and the Rights  Registrar  duly  executed,  by the
holder thereof or his attorney duly authorized in writing.

         No service  charge  shall be made for any  registration  of transfer or
exchange of Right  Certificates,  but the  Company may require  payment of a sum
sufficient to cover any tax or other governmental  charge that may be imposed in
connection with any registration of transfer or exchange of Right  Certificates,
other than exchanges not involving any transfer.

         The  provisions of this Section 6 shall be subject to the provisions of
Section 15.

                                      -11-

<PAGE>



         Section 7. Mutilated, Destroyed, Lost and Stolen Right Certificates. If
any mutilated Right  Certificate is surrendered to the Rights Agent, the Company
shall  execute and the Rights Agent shall  authenticate  and deliver in exchange
therefor a new Right  Certificate of like tenor, for a like number of Rights and
bearing a registration number not contemporaneously outstanding.

         If there shall be  delivered  to the  Company and the Rights  Agent (i)
evidence  to their  satisfaction  of the  destruction,  loss or theft of a Right
Certificate  and (ii) such security or indemnity,  if any, as may be required by
them to save each of them and any agent of either of them harmless, then, in the
absence of notice to the Company or the Rights Agent that such Right Certificate
has been acquired by a bona fide  purchaser,  the Company shall execute and upon
its request the Rights Agent shall authenticate and deliver, in lieu of any such
destroyed,  lost or stolen Right  Certificate,  a new Right  Certificate of like
tenor,  for a like  number  of Rights  and  bearing a  registration  number  not
contemporaneously outstanding.

         Upon the issuance of any new Right Certificate under this Section,  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  (including  the fees  and  expenses  of the  Rights  Agent)  connected
therewith.

         Every new Right Certificate  issued pursuant to this Section in lieu of
any destroyed,  lost or stolen Right  Certificate shall constitute an additional
contractual  obligation of the Company,  whether or not the  destroyed,  lost or
stolen Right Certificate  shall be at any time enforceable by anyone,  and shall
be entitled to all the benefits of this  Agreement  equally and  proportionately
with any and all other Right Certificates duly issued hereunder.

         The provisions of this Section are exclusive and shall preclude (to the
extent lawful) all other rights and remedies with respect to the  replacement or
payment of mutilated, destroyed, lost or stolen Right Certificates.

         Section 8.  Exercise  of Rights;  Purchase  Price;  Expiration  Date of
Rights.  (a) The  registered  holder of any Right  Certificate  may exercise the
Rights  evidenced  thereby (except as otherwise  provided herein) in whole or in
part at any time  after  the  Distribution  Date  upon  surrender  of the  Right
Certificate,  with the form of election to purchase on the reverse  side thereof
duly executed, to the Rights Agent at its Corporate Trust Office,  together with
payment of the Purchase Price for each one one-hundredth  (1/100) of a Preferred
Share (or other securities) as to which the Rights are exercised, at or prior to
the earliest of (i) the Close of Business on the Final Expiration Date, (ii) the
time of redemption on the Redemption Date or (iii) the time at which such Rights
are mandatorily redeemed and exchanged as provided in Section 25 hereof.

         (b)  The  Purchase  Price  for  each  one  one-hundredth  (1/100)  of a
Preferred  Share  pursuant to the  exercise of a Right  shall  initially  be one
hundred fifty  dollars  ($150.00),  shall be subject to adjustment  from time to
time as  provided  in  Sections  12 and 14 hereof and shall be payable in lawful
money of the United States of America in accordance with paragraph (c) below.

                                      -12-

<PAGE>



         (c)  Upon  receipt  of a  Right  Certificate  representing  exercisable
Rights,  with the form of election to purchase  duly  executed,  accompanied  by
payment of the Purchase  Price for the  securities to be purchased and an amount
equal to any  applicable  transfer tax required to be paid by the holder of such
Right  Certificate in accordance  with Section 10 in cash, or by certified check
or cashier's  check payable to the order of the Company,  the Rights Agent shall
thereupon  promptly (i) (A) requisition from any transfer agent of the Preferred
Shares (or other securities)  certificates for such number of one one-hundredths
of a Preferred Share (or other securities) as are to be purchased and registered
in such  name or names as may be  designated  by the  registered  holder of such
Right  Certificate or, if appropriate,  in the name of a depositary agent or its
nominee,  and the Company  hereby  irrevocably  authorizes its transfer agent to
comply with all such  requests,  and (B)  requisition  from a  depositary  agent
appointed by the Company, if any,  depositary receipts  representing such number
of one one-hundredths of a Preferred Share as are to be purchased and registered
in such  name or  names as may be  designated  by such  holder  (in  which  case
certificates  for the Preferred  Shares  represented  by such receipts  shall be
deposited by the transfer  agent with such  depositary  agent),  and the Company
hereby directs such depositary agent to comply with all such requests, (ii) when
appropriate,  requisition from the Company the amount of cash to be paid in lieu
of issuance of fractional  shares in accordance  with Section 15, (iii) promptly
after receipt of such  certificates  or depositary  receipts  registered in such
name  or  names  as may be  designated  by such  holder,  cause  the  same to be
delivered  to or  upon  the  order  of  the  registered  holder  of  such  Right
Certificate and (iv) when appropriate, after receipt, promptly deliver such cash
to or upon the order of such holder.

         (d) If the registered  holder of the Right  Certificate  shall exercise
less than all the Rights evidenced thereby,  a new Right Certificate  evidencing
Rights equal to the Rights remaining  unexercised  shall be issued by the Rights
Agent  to the  registered  holder  of  such  Right  Certificate  or to his  duly
authorized assigns, subject to the provisions of Section 15 hereof.

         Section 9.  Cancellation  and  Destruction of Right  Certificates.  All
Right Certificates surrendered for the purpose of exercise, transfer or exchange
shall, if surrendered to the Company or to any of its other agents, be delivered
to the Rights Agent for such purpose and for  cancellation or, if surrendered to
the  Rights  Agent  for  such  purpose,  shall  be  canceled  by  it.  No  Right
Certificates  shall be  authenticated  in lieu of or in  exchange  for any Right
Certificates  canceled as provided in this Section except as expressly permitted
by any of the  provisions  of this  Agreement.  The Company shall deliver to the
Rights Agent for cancellation,  and the Rights Agent shall so cancel,  any other
Right Certificate  purchased or acquired by the Company.  The Rights Agent shall
deliver all canceled Right Certificates to the Company, or shall,  pursuant to a
Company Order,  destroy such canceled Right  Certificates and in such case shall
deliver a certificate of destruction thereof to the Company.

         Section  10.  Reservation  and  Availability  of  Shares.  The  Company
covenants and agrees that it will cause to be reserved and kept available out of
its authorized and unissued Preferred Shares or any Preferred Shares held in its
treasury,  the number of Preferred  Shares that will be sufficient to permit the
exercise in full of all outstanding Rights.

                                      -13-

<PAGE>



         The Company  further  covenants and agrees that it will, from and after
the  Distribution  Date,  cause to be  reserved  and kept  available  out of its
authorized and unissued Common Shares or any Common Shares held in its treasury,
the number of Common Shares of the Company that will be sufficient to permit the
exercise  in full of all  outstanding  Rights if  adjusted  pursuant  to Section
12(a)(ii).

         The Company  covenants  and agrees that it will take all such action as
may be necessary  to ensure that all  Preferred  Shares or Common  Shares of the
Company issued upon exercise of Rights shall (subject to payment of the Purchase
Price) be duly authorized,  validly issued,  fully paid and  nonassessable.  The
Company  further  covenants and agrees that it will pay when due and payable any
and all federal  and state  transfer  taxes and charges  which may be payable in
respect  of the  issuance  or  delivery  of  the  Right  Certificates  or of any
Preferred  Shares (or  depositary  receipts  therefor)  or Common  Shares of the
Company upon the exercise of Rights. The Company shall not, however, be required
to pay any  transfer  tax which may be payable in  respect  of any  transfer  or
delivery of Right  Certificates  to a Person  other  than,  or in respect of the
issuance or delivery of  certificates  or depositary  receipts for the Preferred
Shares or Common  Shares of the Company  upon  exercise of Rights  evidenced  by
Right  Certificates  in a name other than that of, the registered  holder of the
Right Certificate  evidencing Rights  surrendered for transfer or exercise or to
issue or deliver any certificates or depositary receipts for Preferred Shares or
Common  Shares of the Company upon the exercise of any Rights until any such tax
shall  have been paid (any such tax being  payable  by the  holder of such Right
Certificate at the time of surrender  thereof) or until it has been  established
to the Company's reasonable satisfaction that no such tax is due.

         Section 11. Record Date.  Each Person in whose name any certificate for
Preferred Shares or Common Shares of the Company is issued upon the exercise of,
or upon  mandatory  redemption and exchange of, Rights shall for all purposes be
deemed to have  become  the holder of record of the  Preferred  Shares or Common
Shares  represented  thereby on, and such certificate shall be dated, (i) in the
case of the  exercise  of  Rights,  the date upon  which  the Right  Certificate
evidencing  such Rights was duly  surrendered  and payment of the Purchase Price
(and  any  applicable  transfer  taxes)  was  made,  or (ii) in the  case of the
mandatory  redemption  and  exchange  of  Rights,  the  date of  such  mandatory
redemption and exchange;  provided, however, that, if the date of such surrender
and  payment  or  mandatory  redemption  and  exchange  is a date upon which the
transfer books of the Company for its Preferred Shares or Common Shares,  as the
case may be, are closed,  such Person  shall be deemed to have become the record
holder  of such  shares  on,  and  such  certificate  shall be  dated,  the next
succeeding  Business Day on which such  transfer  books of the Company are open.
Prior to the  exercise of (or the  mandatory  redemption  and  exchange  of) the
Rights  evidenced  thereby,  the  holder  of a Right  Certificate  shall  not be
entitled to any rights of a holder of Preferred  Shares (or Common Shares of the
Company) for which the Rights shall be exercisable, including without limitation
the rights to vote, to receive  dividends or other  distributions or to exercise
any  preemptive  rights,  and shall not be entitled to receive any notice of any
proceedings of the Company, except as provided herein.


                                      -14-

<PAGE>



         Section 12. Adjustment of Purchase Price, Number of Shares or Number of
Rights.  The Purchase  Price,  the number and kind of shares of capital stock of
the  Company  covered  by each Right and the  number of Rights  outstanding  are
subject to adjustment from time to time as provided in this Section 12.

         (a) (i) If the Company  shall at any time (A) declare a dividend on the
Preferred  Shares  payable in Preferred  Shares,  (B) subdivide the  outstanding
Preferred  Shares,  (C) combine the outstanding  Preferred Shares into a smaller
number of  Preferred  Shares or (D) issue any shares of its  capital  stock in a
reclassification of the Preferred Shares (including any such reclassification in
connection with a consolidation or merger in which the Company is the continuing
or surviving  corporation),  except as otherwise provided in this Section 12(a),
the Purchase Price in effect at the time of the record date for such dividend or
of the effective date of such subdivision, combination or reclassification,  and
the number and kind of shares of capital stock  issuable on such date,  shall be
proportionately  adjusted so that the holder of any Right  exercised  thereafter
shall be entitled to receive,  upon payment of the Purchase Price for the number
of one  one-hundredths  of a Preferred  Share for which a Right was  exercisable
immediately  prior to such  date,  the  aggregate  number  and kind of shares of
capital stock which, if such Right had been duly exercised  immediately prior to
such date (at a time when the  Preferred  Shares  transfer  books of the Company
were open), such holder would have acquired upon such exercise and been entitled
to  receive  upon  payment  or  effectuation  of  such  dividend,   subdivision,
combination or reclassification;  provided,  however, that in no event shall the
consideration  to be paid  upon  the  exercise  of one  Right  be less  than the
aggregate par value of the shares of capital stock of the Company  issuable upon
exercise of one Right.  If an event  occurs  which would  require an  adjustment
under both Section 12(a)(i) and Section 12(a)(ii),  the adjustment  provided for
in this  Section  12(a)(i)  shall be in addition to, and shall be made prior to,
any adjustment required pursuant to Section 12(a)(ii).

              (ii)  Subject to action of the Board of  Directors  of the Company
pursuant  to  Section  25 of this  Agreement,  if any  Person  shall  become  an
Acquiring  Person,  each other holder of a Right shall, from and after the Close
of Business on the tenth Business Day after the Shares  Acquisition Date, have a
right to receive,  upon  exercise  thereof at a price equal to the then  current
Purchase  Price  multiplied by the number of one  one-hundredths  of a Preferred
Share for which a Right is then  exercisable,  in  accordance  with the terms of
this Agreement and in lieu of Preferred Shares,  such number of Common Shares of
the  Company as shall  equal the result  obtained  by (x)  multiplying  the then
current Purchase Price by the number of one  one-hundredths of a Preferred Share
for which a Right is then  exercisable  and dividing  that product by (y) 50% of
the  then  current  per  share  market  price  of the  Company's  Common  Shares
(determined  pursuant  to  Section  12(d))  on the date  such  Person  became an
Acquiring  Person. If any Person shall become an Acquiring Person and the Rights
shall then be  outstanding,  the Company  shall not take any action  which would
eliminate or diminish the benefits intended to be afforded by the Rights.

         Notwithstanding  any other provision of this Agreement,  from and after
the time any Person  shall become an  Acquiring  Person,  any Rights that are or
were  acquired  or  beneficially  owned by any  such  Acquiring  Person  (or any
Associate or Affiliate of such Acquiring Person) shall be null and

                                      -15-

<PAGE>



void and any holder of such Rights  shall  thereafter  have no right to exercise
such Rights under any provision of this Agreement. No Right Certificate shall be
issued pursuant to this Agreement that represents Rights  beneficially  owned by
an  Acquiring  Person  whose  Rights  would  be null and  void  pursuant  to the
preceding  sentence  or  by  any  Associate  or  Affiliate  thereof;   no  Right
Certificate  shall be issued at any time upon the  transfer  of any Rights to an
Acquiring  Person whose Rights would be null and void  pursuant to the preceding
sentence or to any Associate or Affiliate  thereof or to any nominee  (acting in
its capacity as such) of such Acquiring Person,  Associate or Affiliate; and any
Right  Certificate  delivered  to the Rights  Agent for transfer to an Acquiring
Person whose Rights would be null and void pursuant to the preceding sentence or
to any Associate or Affiliate  thereof or to any nominee (acting in its capacity
as such) of such Acquiring Person, Associate or Affiliate shall be canceled.

             (iii) If on or after  the  Distribution  Date  there  shall  not be
sufficient  Common  Shares  of  the  Company  issued  but  not  outstanding,  or
authorized  but  unissued,  to permit the  exercise  in full of all  outstanding
Rights in accordance with the foregoing subparagraph (ii), the Company agrees to
take all such  action as is  within  its  power,  including  without  limitation
appropriate  action by its Board of Directors,  as may be necessary to amend the
Company's  charter to  authorize  additional  Common  Shares for  issuance  upon
exercise of the Rights.  If,  notwithstanding  the foregoing,  the  shareholders
shall not  approve  an  amendment  to the  Company's  charter  authorizing  such
additional Common Shares,  the adjustment  prescribed in Section 12(a)(ii) shall
not be made but, in lieu thereof,  each holder of a Right shall  thereafter have
the right to receive, upon exercise thereof in accordance with the terms of this
Agreement,  such number of one one-hundredths of Preferred Shares as shall equal
the result obtained by (x)  multiplying  the then current  Purchase Price by the
number  of one  one-hundredths  of a  Preferred  Share for which a Right is then
exercisable  and dividing  that product by (y) 50% of the then current per share
market price of one one-hundredth of a Preferred Share  (determined  pursuant to
Section 12(d)) on the date such Person became an Acquiring Person.

         (b) If the Company  shall fix a record date for the issuance of rights,
options or warrants to all holders of  Preferred  Shares  entitling  them (for a
period expiring within 45 calendar days after such record date) to subscribe for
or purchase  Preferred Shares (or shares having the same rights,  privileges and
preferences  as  the  Preferred  Shares  ("equivalent   preferred  shares"))  or
securities  convertible  into or exchangeable for Preferred Shares or equivalent
preferred  shares at a price per Preferred  Share or equivalent  preferred share
(together with any additional consideration required upon conversion or exchange
in the case of a security  convertible into or exchangeable for Preferred Shares
or equivalent preferred shares), less than the current per share market price of
the Preferred Shares (determined pursuant to Section 12(d) on such record date),
the Purchase Price to be in effect after such record date shall be determined by
multiplying the Purchase Price in effect  immediately  prior to such record date
by a fraction,  the  numerator of which shall be the number of Preferred  Shares
outstanding  on such record date plus the number of  Preferred  Shares which the
aggregate  offering  price  of the  total  number  of  Preferred  Shares  and/or
equivalent preferred shares so to be offered (together with the aggregate of any
additional consideration required upon conversion or exchange in the case of any
convertible or exchangeable securities so to be offered) would purchase

                                      -16-

<PAGE>



at such current market price and the denominator of which shall be the number of
Preferred  Shares  outstanding on such record date plus the number of additional
Preferred  Shares  and/or   equivalent   preferred  shares  to  be  offered  for
subscription  or purchase (or into or for which the  convertible or exchangeable
securities  so  to  be  offered  are  initially  convertible  or  exchangeable);
provided,  however, that in no event shall the consideration to be paid upon the
exercise  of one Right be less  than the  aggregate  par value of the  shares of
capital stock of the Company issuable upon exercise of one Right. In case all or
part of such  subscription  or  purchase  price may be paid in a form other than
cash,  the value of such  consideration  shall be as determined in good faith by
the Board of Directors of the Company, whose determination shall be described in
a statement filed with the Rights Agent.  Preferred  Shares owned by or held for
the  account  of the  Company  or any of its  Subsidiaries  shall  not be deemed
outstanding for the purpose of any computation  described in this Section 12(b).
The  adjustment  described  in this  Section  12(b)  shall be made  successively
whenever  such record date is fixed;  and,  if none of such  rights,  options or
warrants is so issued,  the Purchase  Price shall be adjusted to be the Purchase
Price which would then be in effect if such record date had not been fixed.

         (c) If the  Company  shall  fix a  record  date  for  the  making  of a
distribution  to all  holders  of  the  Preferred  Shares  (including  any  such
distribution  made in  connection  with a  consolidation  or merger in which the
Company is the continuing or surviving corporation) of evidences of indebtedness
or assets (other than a regular quarterly cash dividend or a dividend payable in
Preferred Shares) or subscription  rights or warrants  (excluding those referred
to in Section 12(b)),  the Purchase Price to be in effect after such record date
shall be  determined by  multiplying  the Purchase  Price in effect  immediately
prior to such  record date by a fraction,  the  numerator  of which shall be the
then current per share market price of the Preferred Shares (determined pursuant
to Section 12(d)) on such record date, less the fair market value (as determined
in good faith by the Board of  Directors  of the  Company,  whose  determination
shall be described in a statement filed with the Rights Agent) of the portion of
the  assets  or  evidences  of  indebtedness  so to be  distributed  or of  such
subscription  rights  or  warrants  applicable  to one  Preferred  Share and the
denominator  of which  shall  be such  current  per  share  market  price of the
Preferred Shares; provided, however, that in no event shall the consideration to
be paid upon the exercise of one Right be less than the  aggregate  par value of
the shares of capital stock of the Company to be issued upon the exercise of one
Right. Such adjustments  shall be made successively  whenever such a record date
is fixed;  and, if such  distribution  is not so made,  the Purchase Price shall
again be adjusted to be the Purchase Price which would then be in effect if such
record date had not been fixed.

         (d) (i) For the purpose of any computation hereunder,  the "current per
share market  price" of the Common  Shares on any date shall be deemed to be the
average of the daily  Closing  Prices per share of such Common Shares for the 30
consecutive  Trading Days  immediately  prior to such date;  provided,  however,
that,  if the issuer of such  Common  Shares  shall  announce  (A) a dividend or
distribution  on such Common Shares  payable in such Common Shares or securities
convertible  into such  Common  Shares or (B) any  subdivision,  combination  or
reclassification  of such  Common  Shares,  and the  ex-dividend  date  for such
dividend or distribution,  or the record date for such subdivision,  combination
or reclassification shall occur during such period of 30 Trading Days,

                                      -17-

<PAGE>



then,  and in each such case,  the current per share  market price of the Common
Shares shall be  appropriately  adjusted to reflect the current market price per
Common Share equivalent.

              (ii) For the purpose of any  computation  hereunder,  the "current
per share market price" of the Preferred  Shares shall be determined in the same
manner as set forth above for Common  Shares in  paragraph  (i) of this  Section
12(d).  If the current per share market price of the Preferred  Shares cannot be
determined in the manner provided above, the "current per share market price" of
the Preferred  Shares shall be  conclusively  deemed to be the current per share
market price of the Common  Shares  (determined  in the manner  provided  above)
multiplied by one hundred.

         (e) No adjustment in the Purchase  Price shall be required  unless such
adjustment  would require an increase or decrease of at least 1% in the Purchase
Price;  provided,  however, that any adjustments which by reason of this Section
12(e) are not  required  to be made  shall be  carried  forward  and taken  into
account in any subsequent  adjustment.  All  calculations  under this Section 12
shall be made to the nearest cent or to the nearest  ten-thousandth  of a Common
Share or other share or  one-millionth of a Preferred Share, as the case may be,
and references herein to the "number of one one-hundredths of a Preferred Share"
(or  similar   phrases)   shall  be  construed  to  include   fractions  of  one
one-hundredth of a Preferred Share.  Notwithstanding  the first sentence of this
Section 12(e), any adjustment required by this Section 12 shall be made no later
than the  earlier  of (i) three  years  from the date of the  transaction  which
requires  such  adjustment  or  (ii)  the  thirtieth  day  preceding  the  Final
Expiration Date.

         (f) If as a result of an adjustment made pursuant to Section 12(a), the
holder of any Right  thereafter  exercised  shall become entitled to receive any
shares of capital stock of the Company other than Preferred  Shares,  thereafter
the number of such other shares so  receivable  upon exercise of any Right shall
be  subject to  adjustment  from time to time in a manner and on terms as nearly
equivalent as practicable to the provisions with respect to the shares contained
in this Section 12, and the  provisions  of this  Agreement,  including  without
limitation Sections 8, 10, 11 and 14, with respect to the Preferred Shares shall
apply on like terms to any such other shares.

         (g) All  Rights  originally  issued by the  Company  subsequent  to any
adjustment made to the Purchase Price hereunder shall,  whether or not the Right
Certificate  evidencing  such Rights  reflects  such  adjusted  Purchase  Price,
evidence the right to purchase,  at the adjusted  Purchase Price,  the number of
one  one-hundredths of a Preferred Share purchasable from time to time hereunder
upon  exercise of the  Rights,  all  subject to further  adjustment  as provided
herein.

         (h) Unless the Company shall have exercised its election as provided in
Section  12(i),  upon each  adjustment of the Purchase Price pursuant to Section
12(b) or 12(c), each Right  outstanding  immediately prior to the making of such
adjustment  shall  thereafter  evidence the right to  purchase,  at the adjusted
Purchase Price per one  one-hundredth of a Preferred  Share,  that number of one
one-hundredths  of a Preferred  Share obtained by (i) multiplying (x) the number
of  one-hundredths  of a share  covered  by a Right  immediately  prior  to this
adjustment  by (y) the  Purchase  Price  in  effect  immediately  prior  to such
adjustment of the Purchase Price and (ii) dividing the

                                      -18-

<PAGE>



product so  obtained  by the  Purchase  Price in effect  immediately  after such
adjustment of the Purchase Price.

         (i) The Company may elect on or after the date of any adjustment of the
Purchase  Price to  adjust  the  number  of  Rights  outstanding  in lieu of any
adjustment in the number of one  one-hundredths of a Preferred Share purchasable
upon the exercise of a Right.  Each Right  outstanding  after such adjustment of
the number of Rights shall be exercisable  for the number of one  one-hundredths
of a Preferred Share for which a right was exercisable immediately prior to such
adjustment  of the  Purchase  Price.  Each  Right  held of record  prior to such
adjustment  of  the  number  of  Rights  shall  become  that  number  of  Rights
(calculated to the nearest one ten-thousandth) obtained by dividing the Purchase
Price in effect  immediately  prior to adjustment  of the Purchase  Price by the
Purchase Price in effect immediately after adjustment of the Purchase Price. The
Company shall make a public announcement of its election to adjust the number of
Rights,  indicating  the record  date for the  adjustment,  and, if known at the
time, the amount of the adjustment to be made.  This record date may be the date
on which the Purchase Price is adjusted or any day thereafter, but, if the Right
Certificates have been issued,  shall be at least 10 days later than the date of
the public announcement. (Until such record date, however, any adjustment in the
number of one  one-hundredths  of a  Preferred  Share for which a Right shall be
exercisable made as required by this Agreement shall remain in effect.) If Right
Certificates  have been  issued,  upon each  adjustment  of the number of Rights
pursuant to this Section 12(i),  the Company shall,  as promptly as practicable,
cause to be  distributed  to  holders  of record of Right  Certificates  on such
record date Right  Certificates  evidencing,  subject to Section 15 hereof,  the
additional  Rights to which such  holders  shall be entitled as a result of such
adjustment,  or, at the option of the Company,  shall cause to be distributed to
such  holders  of  record  in   substitution   and  replacement  for  the  Right
Certificates  held by such  holders  prior to the date of  adjustment,  and upon
surrender thereof, if required by the Company, new Right Certificates evidencing
all the Rights to which such holders  shall be entitled  after such  adjustment.
Right  Certificates  so  to  be  distributed  shall  be  issued,   executed  and
authenticated  in the manner  provided for herein and shall be registered in the
names  of the  holders  of  record  of Right  Certificates  on the  record  date
specified in the public announcement.

         (j)  Irrespective  of any adjustment or change in the Purchase Price or
the number of one one-hundredths of a Preferred Share issuable upon the exercise
of the Rights,  the Right  Certificates  theretofore  and thereafter  issued may
continue to express the Purchase Price and the number of one one-hundredths of a
Preferred  Share which were expressed in the initial Right  Certificates  issued
hereunder.

         (k) Before  taking any action that would cause an  adjustment  reducing
the Purchase Price below one  one-hundredth of the amount of  consideration  per
Preferred  Share  determined  by the Board of  Directors  of the  Company  to be
capital,  or below one  one-hundredth  of the par value,  if any, per  Preferred
Share  issuable  upon  exercise of the Rights,  the Company  agrees to take such
corporate  action  as  is  within  its  power,   including  without   limitation
appropriate  action by its Board of  Directors,  and which is, in the opinion of
its counsel, necessary in order that the Company may

                                      -19-

<PAGE>



validly and legally issue fully paid and  nonassessable  one  one-hundredths  of
Preferred Shares at such adjusted Purchase Price.

         (l) In any  case  in  which  this  Section  12  shall  require  that an
adjustment  in the  Purchase  Price be made  effective as of a record date for a
specified  event,  the Company may elect to defer until the  occurrence  of such
event the issuance to the holder of any Right  exercised  after such record date
of the Preferred Shares or other capital stock or securities of the Company,  if
any,  issuable upon such  exercise over and above the Preferred  Shares or other
capital stock or securities of the Company,  if any, issuable upon such exercise
on the basis of the Purchase Price in effect prior to such adjustment; provided,
however,  that the  Company  shall  deliver  to such  holder a due bill or other
appropriate instrument evidencing such holder's right to receive such additional
securities upon the occurrence of the event requiring such adjustment.

         (m) Anything in this Section 12 to the  contrary  notwithstanding,  the
Company  shall be entitled to make such  reductions  in the Purchase  Price,  in
addition to those adjustments  expressly  required by this Section 12, as and to
the extent that it in its sole  discretion  shall  determine  to be advisable in
order that any  combination  or subdivision  of the Preferred  Shares,  issuance
wholly for cash of any of the Preferred  Shares at less than the current  market
price, issuance wholly for cash of Preferred Shares or securities which by their
terms are convertible  into or exchangeable for Preferred  Shares,  dividends on
Preferred Shares payable in Preferred  Shares or issuance of rights,  options or
warrants referred to in subsection (b) of this Section 12, hereafter effected by
the  Company  to holders of its  Preferred  Shares  shall not be taxable to such
shareholders.

         (n) If at any time prior to the  Distribution  Date,  the Company shall
(i) declare or pay any dividend on the Common  Shares of the Company  payable in
such Common Shares or (ii) effect a subdivision  or  combination  of such Common
Shares (by  reclassification or otherwise than by payment of dividends in Common
Shares) into a greater or lesser number of Common Shares,  then in any such case
(A) the number of one one-hundredths of a Preferred Share purchasable after such
event upon proper  exercise of each Right shall be determined by multiplying the
number of one  one-hundredths  of a Preferred  Share so purchasable  immediately
prior to such  event by a  fraction,  the  numerator  of which is the  number of
Common Shares of the Company  outstanding  immediately before such event and the
denominator of which is the number of such Common Shares outstanding immediately
after such event, and (B) each such Common Share  outstanding  immediately after
such event shall have issued with respect to it that number of Rights which each
such Common Share  outstanding  immediately  prior to such event had issued with
respect to it. The  adjustment  provided for in this Section 12(n) shall be made
successively  whenever such a dividend is declared or paid or such a subdivision
or combination is effected. If an event occurs which would require an adjustment
under Section 12(a)(ii) and this Section 12(n), the adjustments  provided for in
this  Section  12(n) shall be in addition and prior to any  adjustment  required
pursuant to Section 12(a)(ii).

Section 13. Certificate of Adjusted Purchase Price or Number of Shares. Whenever
an adjustment is made as provided in Section 12 or 14 hereof,  the Company shall
(a) promptly prepare a certificate  setting forth such  adjustment,  and a brief
statement of the facts accounting for such adjustment, (b) promptly file with

                                      -20-

<PAGE>



the  Rights  Agent and with each  transfer  agent for the  Common  Shares of the
Company and the Preferred Shares a copy of such certificate and (c) mail a brief
summary  thereof to each holder of record of a Right  Certificate  in accordance
with Section 28 hereof.

         Section  14.  Consolidation,  Merger or Sale or  Transfer  of Assets or
Earning Power.  (a) If,  directly or indirectly,  at any time after a Person has
become an Acquiring  Person,  (i) the Company shall  consolidate  with, or merge
with and into,  any other Person,  (ii) any Person shall merge with and into the
Company and the Company shall be the continuing or surviving corporation of such
merger and, in connection with any such merger, all or part of the Common Shares
of the Company shall be changed into or exchanged for stock or other  securities
of any other Person (or the Company) or cash or any other property, or (iii) the
Company  shall sell or otherwise  transfer  (or one or more of its  Subsidiaries
shall  sell  or  otherwise  transfer),  in  one  or a  series  of  two  or  more
transactions,  assets of the Company or its  Subsidiaries  which constitute more
than 50% of the assets or which  produce  more than 50% of the earning  power or
cash flow of the Company and its  Subsidiaries  (taken as a whole) to any Person
other than the Company or one or more of its Wholly- Owned  Subsidiaries,  then,
and in each such case,  the Company  agrees that,  as a condition to engaging in
any such transaction,  it will make or cause to be made proper provision so that
(i)  each  holder  of a  Right  (except  as  otherwise  provided  herein)  shall
thereafter  have the right to receive,  upon the exercise  thereof in accordance
with the terms of this Agreement and in lieu of Preferred Shares, such number of
Common Shares of the Principal  Party (as such term is  hereinafter  defined) as
shall  be equal to the  result  obtained  by (X)  multiplying  the then  current
Purchase  Price by the number of one  one-hundredths  of a  Preferred  Share for
which a Right is then  exercisable  (without  taking into account any adjustment
previously made pursuant to Section  12(a)(ii)) and dividing that product by (Y)
50% of the current  per share  market  price of the Common  Shares of such other
Person  (determined  pursuant to Section 12(d)) on the date of  consummation  of
such consolidation,  merger,  sale or transfer;  (ii) such Principal Party shall
thereafter  be liable for, and shall  assume,  by virtue of such  consolidation,
merger, sale or transfer, all the obligations and duties of the Company pursuant
to this Agreement; (iii) the term "Company," as used herein, shall thereafter be
deemed to refer to such Principal Party; and (iv) the Principal Party shall take
such steps (including  without limitation the reservation of a sufficient number
of shares of its Common Shares in accordance with Section 10) in connection with
such consummation as may be necessary to assure that the provisions hereof shall
thereafter be  applicable,  as nearly as  reasonably  may be, in relation to the
Common  Shares  thereafter  deliverable  upon the  exercise of the  Rights.  The
Company  shall not enter into any  transaction  of the kind  referred to in this
Section 14 if at the time of such transaction  there are outstanding any rights,
warrants, instruments or securities or any agreement or arrangements which, as a
result of the consummation of such transaction,  would substantially diminish or
otherwise  eliminate  the  benefits  intended to be afforded by the Rights.  The
Company shall not consummate any such  consolidation,  merger,  sale or transfer
unless prior  thereto the Company and such  Principal  Party shall have executed
and delivered to the Rights Agent an agreement  supplemental  to this  Agreement
complying with the provisions of this Section 14. The provisions of this Section
14 shall similarly  apply to successive  mergers or  consolidations  or sales or
other  transfers.  For the purposes of this Section 14, 50% of the assets of the
Company and its Subsidiaries shall be determined by

                                      -21-

<PAGE>



reference  to the book  value of such  assets  as set  forth in the most  recent
consolidated  balance sheet of the Company and its Subsidiaries  (which need not
be  audited)  and 50% of the  earning  power or cash flow of the Company and its
Subsidiaries shall be determined by reference to the mathematical average of the
operating  income or cash flow,  respectively,  resulting from the operations of
the Company and its  Subsidiaries  for the two most recent full fiscal  years as
set forth in the  consolidated  and  consolidating  financial  statements of the
Company and its Subsidiaries  for such years;  provided,  however,  that, if the
Company has,  during such period,  engaged in one or more  transactions to which
purchase accounting is applicable, such determination shall be made by reference
to the pro forma  operating  income of the Company and its  Subsidiaries  giving
effect to such  transactions as if they had occurred at the commencement of such
two-year period.

         (b) The  term  "Principal  Party"  shall  mean:  (i) in the case of any
transaction  described  in clause (i) or (ii) of the first  sentence  of Section
14(a),  the Person that is the issuer of any securities into which Common Shares
of the  Company  are  converted  in such  merger or  consolidation,  and,  if no
securities  are so issued,  the Person that is the other party to such merger or
consolidation; and (ii) in the case of any transaction described in clause (iii)
of the first sentence of Section 14(a),  the Person that is the party  receiving
the greatest portion of the assets  transferred  pursuant to such transaction or
transactions;  provided, however, that in any such case (1) if the Common Shares
of such  Person  is not at such  time  and has not  been  continuously  over the
preceding twelve months registered under Section 12 of the Exchange Act and such
Person is a direct or indirect subsidiary of another Person the Common Shares of
which is and has been so registered,  the term "Principal  Party" shall refer to
such other  Person;  and (2) in case such  Person is a  Subsidiary,  directly or
indirectly,  of more than one Person,  the Common Shares of two or more of which
are and have been so  registered,  the term  "Principal  Party"  shall  refer to
whichever of such Persons is the issuer of the Common Shares having the greatest
aggregate market value.

         (c) The Company shall not  consummate any such  consolidation,  merger,
sale or transfer  unless the Principal  Party shall have a sufficient  number of
authorized  Common Shares which have not been issued or reserved for issuance to
permit the exercise in full of the Rights in accordance with this Section 14 and
unless prior  thereto the Company and such  Principal  Party shall have executed
and  delivered to the Rights Agent a  supplemental  agreement  providing for the
terms  set  forth in  subsections  (a) and (b) of this  Section  14 and  further
providing  that,  as soon as  practicable  after the date of any  consolidation,
merger,  sale or transfer of assets  referenced in the first sentence of Section
14(a), the Principal Party shall: (i) prepare and file a registration  statement
under  the  Securities  Act  with  respect  to the  Rights  and  the  securities
purchasable  upon exercise of the Rights on an  appropriate  form, and shall use
its best efforts to cause such registration statement to (A) become effective as
soon  as  practicable  after  such  filing  and  (B)  remain  effective  (with a
prospectus at all times meeting the  requirements  of the Securities  Act) until
the Final  Expiration  Date;  and (ii)  shall  deliver  to holders of the Rights
historical  financial  statements  for  the  Principal  Party  and  each  of its
Affiliates  which comply in all respects with the  requirements for registration
of a class of securities  under the Exchange Act. The provisions of this Section
14 shall similarly apply to successive  mergers,  consolidations,  sale or other
transfers of assets.  If an event  subject to this Section 14 shall occur at any
time after the occurrence of an event subject to Section 12(a)(ii), the

                                      -22-

<PAGE>



Rights  that  have  not  theretofore  been  exercised  shall  thereafter  become
exercisable in the manner described in Section 14(a).

         Section 15.  Fractional Rights and Fractional  Shares.  (a) the Company
shall not be required to issue or distribute Right  Certificates  which evidence
fractional  Rights.  If, on the Distribution Date or thereafter,  as a result of
any  adjustment  effected  pursuant to Section 12(i) or otherwise  hereunder,  a
Person would otherwise be entitled to receive a Right  Certificate  evidencing a
fractional Right, the Company shall, in lieu thereof, pay or cause to be paid to
such Person an amount in cash equal to the same  fraction of the current  market
value of a whole  Right.  For the  purpose of this  Section  15(a),  the current
market  value of a whole Right shall be the Closing  Price of the Rights for the
Trading Day immediately  prior to the date on which such fractional Rights would
have been otherwise issuable.

         (b) The Company  shall not be required to issue  fractions of Preferred
Shares (other than fractions which are integral  multiples of one  one-hundredth
of a Preferred Share) upon exercise of the Rights or to distribute  certificates
which  evidence  fractional  Preferred  Shares (other than  fractions  which are
integral  multiples of one  one-hundredth  of a Preferred  Share).  Fractions of
Preferred Shares in integral multiples of one one-hundredth of a Preferred Share
may, at the  election of the  Company,  be  evidenced  by  depositary  receipts,
pursuant to an  appropriate  agreement  between  the  Company  and a  depositary
selected by it,  provided that such agreement  shall provide that the holders of
such depositary  receipts shall have all the rights,  privileges and preferences
to which  they  are  entitled  as  beneficial  owners  of the  Preferred  Shares
represented  by  such  depository  shares.  If,  on  the  Distribution  Date  or
thereafter,  as a result of any adjustment  effected  hereunder in the number of
one  one-hundredths  of a  Preferred  Share  as to  which  a  Right  has  become
exercisable,  a Person  would  otherwise  be  entitled  to receive a  fractional
Preferred  Share that is not an  integral  multiple  of one  one-hundredth  of a
Preferred Share,  the Company shall, in lieu thereof,  pay to such Person at the
time such Right is exercised  as herein  provided an amount in cash equal to the
same  fraction  (which is not an  integral  multiple of one  one-hundredth  of a
Preferred  Share)  of the  current  market  value of one  Preferred  Share.  For
purposes of this Section 15(b),  the current  market value of a Preferred  Share
shall be the Closing Price of a Preferred  Share for the Trading Day immediately
prior to the date of such exercise.

         (c) Should any  adjustment  contemplated  by Section  12(a)(ii)  or any
mandatory redemption and exchange  contemplated by Section 25 occur, the Company
shall not be required to issue  fractions  of Common  Shares of the Company upon
exercise of the Rights or to distribute  certificates which evidence  fractional
Common  Shares.  If,  after any such  adjustment  or  mandatory  redemption  and
exchange,  a Person would  otherwise be entitled to receive a fractional  Common
Share of the Company upon exercise of any Right  Certificate  or upon  mandatory
redemption and exchange as  contemplated  by Section 25, the Company  shall,  in
lieu  thereof,  pay to such Person at the time such Right is exercised as herein
provided or upon such mandatory  redemption and exchange an amount in cash equal
to the same  fraction  of the  current  market  value of one Common  Share.  For
purposes of this Section  15(c),  the current  market value of a Common Share of
the

                                      -23-

<PAGE>



Company  shall be the Closing  Price of such a Common  Share for the Trading Day
immediately  prior to the date of such  exercise  or the date of such  mandatory
redemption and exchange.

         (d) The holder of a Right by the acceptance  thereof  expressly  waives
his right to  receive  any  fractional  Rights  or any  fractional  shares  upon
exercise or mandatory  redemption  and  exchange of a Right  (except as provided
above).

         Section  16.  Rights of Action.  (a) All rights of action in respect of
the  obligations  and  duties  owed to the  holders  of the  Rights  under  this
Agreement are vested in the registered  holders of the Rights;  and, without the
consent of the Rights Agent or of the holder of any other Rights, any registered
holder of any Rights  may, in his own behalf and for his own  benefit,  enforce,
and may  institute  and maintain  any suit,  action or  proceeding,  judicial or
otherwise,  against the Company to enforce,  or  otherwise to act in respect of,
such holder's right to exercise such Rights in the manner  provided in the Right
Certificate  evidencing such Rights and in this Agreement.  Without limiting the
foregoing or any remedies available to the holders of Rights, it is specifically
acknowledged that the holders of Rights would not have an adequate remedy at law
for any breach of this Agreement and will be entitled to specific performance of
the  obligations  under,  and  injunctive  relief  against  actual or threatened
violations of, the obligations of any Person subject to this Agreement.

         (b) No  right  or  remedy  herein  conferred  upon or  reserved  to the
registered  holder of Rights is intended to be  exclusive  of any other right or
remedy,  and every right and remedy  shall,  to the extent  permitted by law, be
cumulative  and in addition to every other right and remedy  given  hereunder or
now or hereafter  existing at law or in equity or  otherwise.  The  assertion or
employment of any right or remedy,  whether  hereunder or  otherwise,  shall not
prevent the concurrent assertion or employment of any other appropriate right or
remedy.

         (c) No delay or omission of any registered holder of Rights to exercise
any right or remedy accruing  hereunder shall impair any such right or remedy or
constitute a waiver of any default hereunder or an acquiescence  therein.  Every
right and remedy given hereunder or by law to such holders may be exercised from
time to time, and as often as may be deemed expedient, by such holders.

          Section 17.  Agreement of Right Holders.  Every holder of a Right,  by
accepting  the same,  consents  and agrees with the Company and the Rights Agent
and with every other holder of a Right that:

              (a)  prior  to  the   Distribution   Date,   the  Rights  will  be
          transferable only in connection with the transfer of the Common Shares
          of the Company;

              (b) after  the  Distribution  Date,  the  Right  Certificates  are
          transferable  only  on the  registry  books  of the  Rights  Agent  if
          surrendered  at the  Corporate  Trust  Office of the Rights Agent duly
          endorsed or accompanied by a proper instrument of transfer; and


                                      -24-

<PAGE>



              (c) the Company and the Rights Agent may deem and treat the person
          in whose name the Right  Certificate  (or,  prior to the  Distribution
          Date, the associated  Common Shares  certificate) is registered as the
          absolute   owner   thereof  and  of  the  Rights   evidenced   thereby
          (notwithstanding  any  notations  of ownership or writing on the Right
          Certificates  or the  associated  Common  Shares  certificate  made by
          anyone other than the Company or the Rights  Agent) for all  purposes,
          and neither the Company nor the Rights  Agent shall be affected by any
          notice to the contrary.

         Section  18.  Right  Certificate  Holder Not Deemed a  Stockholder.  No
holder,  as  such,  of any  Right  (whether  or not  then  evidenced  by a Right
Certificate)  shall be entitled to vote,  receive dividends or be deemed for any
purpose to be the holder of Preferred  Shares,  Common  Shares of the Company or
any other  securities  of the  Company  which may at any time be issuable on the
exercise  (or  mandatory  redemption  and  exchange)  of the Rights  represented
thereby,  nor shall  anything  contained  herein or in any Right  Certificate be
construed  to  confer  upon any such  holder,  as such,  any of the  rights of a
stockholder of the Company,  including without  limitation any right to vote for
the election of directors or upon any matter  submitted to  stockholders  at any
meeting thereof, to give or withhold consent to any corporate action, to receive
notice of meetings or other actions affecting  stockholders  (except as provided
in Section 26) or to receive dividends or subscription rights until the Right or
Rights  evidenced  by such  Right  Certificate  shall  have been  exercised  (or
mandatorily redeemed and exchanged) in accordance with the provisions hereof.

         Section 19.  Concerning the Rights Agent.  The Company agrees to pay to
the  Rights  Agent  reasonable  compensation  for all  services  rendered  by it
hereunder and, from time to time, on demand of the Rights Agent,  its reasonable
expenses and counsel fees and other disbursements incurred in the administration
and execution of this  Agreement and the exercise and  performance of its duties
hereunder.  The Company  also agrees to  indemnify  the Rights Agent for, and to
hold it harmless  against,  any loss,  liability  or expense,  incurred  without
negligence, bad faith or willful misconduct on the part of the Rights Agent, for
anything done or omitted by the Rights Agent in connection  with the  acceptance
and  administration  of this  Agreement,  including  the costs and  expenses  of
defending against any claim of liability in the premises.

         The Rights Agent shall be protected  and shall incur no liability  for,
or in respect of any action taken, suffered or omitted by it in connection with,
its  administration  of this Agreement in reliance upon any Right Certificate or
certificate  for  Preferred  Shares,  Common  Shares  of the  Company  or  other
securities of the Company,  Company Order, instrument of assignment or transfer,
power of attorney,  endorsement,  affidavit, letter, notice, direction, consent,
certificate,  statement, or other paper or document believed by it to be genuine
and to be executed and, where necessary, verified or acknowledged, by the proper
person or persons,  or otherwise  upon the advice of its counsel as set forth in
Section 20 hereof.

         Section 20. Duties of Rights  Agent.  The Rights Agent  undertakes  the
duties and  obligations  imposed by this Agreement upon the following  terms and
conditions,  by all of which the Company and the holders of Right  Certificates,
by their acceptance thereof, shall be bound:

                                      -25-

<PAGE>



         (a) The Rights Agent may consult  with legal  counsel (who may be legal
counsel  for the  Company),  and the opinion of such  counsel  shall be full and
complete authorization and protection to the Rights Agent as to any action taken
or omitted by it in good faith and in accordance with such opinion.

         (b) Whenever in the  performance of its duties under this Agreement the
Rights Agent shall deem it  necessary  or  desirable  that any fact or matter be
proved or  established  by the Company  prior to taking or suffering  any action
hereunder,  such fact or matter  (unless  other  evidence in respect  thereof be
herein  specifically  prescribed)  may be deemed to be  conclusively  proved and
established by a certificate signed by any one of the Chairman of the Board, the
President,  any Vice  President,  the Treasurer,  any Assistant  Treasurer,  the
Secretary or any Assistant  Secretary of the Company and delivered to the Rights
Agent; and such certificate shall be full  authorization to the Rights Agent for
any action  taken or suffered in good faith by it under the  provisions  of this
Agreement in reliance upon such certificate.

         (c) The Rights  Agent shall be liable  hereunder  to the Company or any
other Person only for its own negligence, bad faith or willful misconduct.

         (d) The Rights Agent shall not be liable for or by reason of any of the
statements  of fact or  recitals  contained  in this  Agreement  or in the Right
Certificates  (except its  authentication  thereof) or be required to verify the
same, but all such  statements and recitals are and shall be deemed to have been
made by the Company only.

         (e) The Rights Agent shall not have any responsibility  with respect to
the validity of this Agreement or the execution and delivery  hereof (except the
due  execution  hereof by the Rights  Agent) or with  respect to the validity or
execution of any Right  Certificate  (except its  authentication  thereof);  nor
shall it be  responsible  for any  breach  by the  Company  of any  covenant  or
condition contained in this Agreement or in any Right Certificate;  nor shall it
be responsible for any change in the exercisability of the Rights (including the
Rights becoming void pursuant to Section  12(a)(ii) hereof) or any adjustment in
the terms of the  Rights  (including  the  manner,  method,  or amount  thereof)
provided  for in  Sections  3, 12,  14, 24 and 25, or the  ascertainment  of the
existence of facts that would require any such change or adjustment (except with
respect to the exercise of Rights evidenced by Right  Certificates  after actual
notice  that such change or  adjustment  is  required);  nor shall it by any act
hereunder  be  deemed  to  make  any   representation  or  warranty  as  to  the
authorization  or  reservation  of any  Preferred  Shares or Common Shares to be
issued pursuant to this Agreement or any Right  Certificate or as to whether any
Preferred Shares or Common Shares will, when issued, be duly authorized, validly
issued, fully paid and nonassessable.

         (f) The Company agrees that it will perform,  execute,  acknowledge and
deliver or cause to be performed, executed,  acknowledged and delivered all such
further and other acts, instruments and assurances as may reasonably be required
by the Rights Agent for the carrying  out or  performing  by the Rights Agent of
the provisions of this Agreement.


                                      -26-

<PAGE>



         (g) The  Rights  Agent is  hereby  authorized  and  directed  to accept
instructions  with respect to the  performance of its duties  hereunder from any
one of the  Chairman  of the  Board,  the  President,  any Vice  President,  the
Treasurer,  any Assistant Treasurer, the Secretary or any Assistant Secretary of
the  Company,  and to apply to such  officers  for  advice  or  instructions  in
connection  with its duties,  and it shall not be liable for any action taken or
suffered to be taken by it in good faith in accordance with  instructions of any
such officer.

         (h) The Rights Agent and any shareholder, director, officer or employee
of the  Rights  Agent  may  buy,  sell  or deal in any of the  Rights  or  other
securities of the Company or become pecuniarily interested in any transaction in
which the  Company  may be  interested,  or  contract  with or lend money to the
Company or otherwise  act as fully and freely as though it were not Rights Agent
under this Agreement. Nothing herein shall preclude the Rights Agent from acting
in any other capacity for the Company.

         (i) The Rights  Agent may  execute  and  exercise  any of the rights or
powers hereby vested in it or perform any duty hereunder  either itself or by or
through its attorneys or agents, and the Rights Agent shall not be answerable or
accountable for any act, default, neglect or misconduct of any such attorneys or
agents or for any loss of the  Company  resulting  from any such  act,  default,
neglect or  misconduct,  provided  that  reasonable  care was  exercised  in the
selection and continued employment thereof.

         Section 21. Merger or  Consolidation or Change of Name of Rights Agent.
Any corporation into which the Rights Agent or any successor Rights Agent may be
merged or with which it may be consolidated,  or any corporation  resulting from
any merger or  consolidation  to which the Rights Agent or any successor  Rights
Agent  shall be a party,  or any  corporation  succeeding  the  corporate  trust
business  of the  Rights  Agent  or any  successor  Rights  Agent,  shall be the
successor  to the Rights  Agent under this  Agreement  without the  execution or
filing of any paper or any further act on the part of any of the parties hereto,
provided that such corporation  would be eligible for appointment as a successor
Rights Agent under the  provisions of Section 22. If at the time such  successor
Rights Agent shall  succeed to the agency  created by this  Agreement any of the
Right  Certificates  shall have been  authenticated but not delivered,  any such
successor Rights Agent may adopt the  authentication  of the predecessor  Rights
Agent and deliver such Right Certificates so authenticated, and, if at that time
any of the Right Certificates shall not have been  authenticated,  any successor
Rights Agent may authenticate such Right Certificates  either in the name of the
predecessor  Rights Agent or in the name of the successor  Rights Agent;  and in
all such cases such Right Certificates shall have the full force provided in the
Right Certificates and in this Agreement.

         If at any time the name of the Rights  Agent  shall be  changed  and at
such time any of the Right  Certificates  shall have been  authenticated but not
delivered,  the Rights Agent may adopt the  authentication  under its prior name
and deliver Right  Certificates so authenticated;  and, in case at that time any
of the Right  Certificates shall not have been  authenticated,  the Rights Agent
may  authenticate  such  Right  Certificates  either in its prior name or in its
changed name; and in all such

                                      -27-

<PAGE>



cases such Right  Certificates  shall have the full force  provided in the Right
Certificates and in this Agreement.

         Section 22. Change of Rights  Agent.  The Rights Agent or any successor
Rights Agent may resign and be discharged  from its duties under this  Agreement
upon 30 days' notice in writing mailed to the Company and to each transfer agent
for the Common Shares of the Company and the  Preferred  Shares by registered or
certified  mail,  and to the holders of the Right  Certificates  by  first-class
mail. The Company may remove the Rights Agent or any successor Rights Agent upon
30 days'  notice in  writing,  mailed to the Rights  Agent or  successor  Rights
Agent,  as the case may be, and to each transfer  agent for the Common Shares of
the Company and the Preferred Shares by registered or certified mail, and to the
holders of the Right Certificates by first-class mail. If the Rights Agent shall
resign or be removed or shall otherwise become incapable of acting,  the Company
shall appoint a successor to the Rights Agent. If the Company shall fail to make
such appointment  within a period of 30 days after giving notice of such removal
or after it has been  notified in writing of such  resignation  or incapacity by
the resigning or  incapacitated  Rights Agent or by the  registered  holder of a
Right Certificate (or, prior to the Distribution  Date, of Common Shares),  then
any registered  holder of a Right  Certificate  (or,  prior to the  Distribution
Date, of Common Shares) may apply to any court of competent jurisdiction for the
appointment of a new Rights Agent. Any successor Rights Agent, whether appointed
by the Company or by such a court,  shall be a corporation or other legal entity
organized,  doing  business  and in good  standing  under the laws of the United
States or of any state of the United  States,  which is  authorized  to exercise
corporate  securities  transfer powers in the State of Texas and has at the time
of its  appointment  as Rights Agent a combined  capital and surplus of at least
$25 million. After appointment,  the successor Rights Agent shall be vested with
the  same  powers,  rights,  duties  and  responsibilities  as  if it  had  been
originally  named  as  Rights  Agent  without  further  act  or  deed;  but  the
predecessor  Rights  Agent shall  deliver and transfer to the  successor  Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance,  conveyance, act or deed necessary for the purpose. Not later
than the effective date of any such  appointment,  the Company shall file notice
thereof in writing with the predecessor Rights Agent and each transfer agent for
the Common  Shares of the Company and the  Preferred  Shares,  and mail a notice
thereof in writing to the registered holders of the Right Certificates.  Failure
to give any notice  provided  for in this  Section  22,  however,  or any defect
therein, shall not affect the legality or validity of the resignation or removal
of the Rights Agent or the  appointment  of the successor  Rights Agent,  as the
case may be.

         Section 23. Issuance of New Right Certificates.  Notwithstanding any of
the provisions of this  Agreement or of the Rights to the contrary,  the Company
may, at its option, issue new Rights Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the  Purchase  Price per  share and the  number or kind or class of shares or
other securities  purchasable  under the Right  Certificates  made in accordance
with the provisions of this Agreement.

Section 24. Redemption. (a) The Rights may be redeemed by action of the Board of
Directors of the Company pursuant to paragraph (b) of this Section 24, or may be

                                      -28-

<PAGE>



redeemed  and  exchanged  by  action of the Board of  Directors  of the  Company
pursuant to Section 25 herein, but shall not be redeemed in any other manner.
         (b) The Board of Directors  of the Company  may, at its option,  at any
time prior to the Close of  Business on the Shares  Acquisition  Date redeem all
but not less than all the then  outstanding  Rights at a redemption price of one
cent ($0.01) per Right then outstanding,  appropriately  adjusted to reflect any
adjustment in the number of Rights outstanding  pursuant to Section 12(i) herein
(such redemption price being hereinafter referred to as the "Redemption Price").
Any  such  redemption  of the  Rights  by the  Board  of  Directors  may be made
effective at such time,  on such basis and with such  conditions as the Board of
Directors in its sole discretion may establish.

         (c) The  right  of the  registered  holders  of Right  Certificates  to
exercise  the Rights  evidenced  thereby  or, if the  Distribution  Date has not
theretofore occurred,  the inchoate right of the registered holders of Rights to
exercise the same shall,  without  notice to such holders or to the Rights Agent
and  without  further  action,  terminate  and be of no further  force or effect
effective as of the time of adoption by the Board of Directors of the Company of
a resolution  authorizing and directing the redemption of the Rights pursuant to
paragraph (b) of this Section 24 (or,  alternatively,  if the Board of Directors
qualified  such action as to time,  basis or  conditions,  then at such time, on
such  basis  and  with  such  conditions  as the  Board  of  Directors  may have
established pursuant to such paragraph (b));  thereafter,  the only right of the
holders of Rights shall be to receive the  Redemption  Price.  The Company shall
promptly give public notice of any redemption  resolution  pursuant to paragraph
(b) of this  Section 24;  provided,  however,  that the failure to give,  or any
defect in, any such notice  shall not affect the  validity  of such  redemption.
Within 10 days after the  adoption  of any  redemption  resolution  pursuant  to
paragraph  (b) of this  Section  24,  the  Company  shall  give  notice  of such
redemption to the holders of the then outstanding  Rights by mailing such notice
to all such  holders at their last  addresses  as they appear upon the  registry
books of the Rights Agent or, prior to the  Distribution  Date,  on the registry
books of the transfer  agents for the Common  Shares of the Company.  Any notice
which is mailed in the manner herein provided shall be deemed given,  whether or
not the holder receives the notice.  Each such notice of redemption  shall state
the method by which the payment of the Redemption Price will be made.

         (d) Neither the Company nor any of its  Affiliates  or  associates  may
acquire  (other than, in the case of such  Affiliates and  Associates,  in their
capacity as holders of Common  Shares of the  Company),  redeem or purchase  for
value any Rights at any time un any manner other than as specifically  set forth
in this Section 24 or in Section 25 herein,  and other than in  connection  with
the purchase of Common Shares of the Company prior to the distribution Date.

         Section  25.  Mandatory  Redemption  and  Exchange.  (a) The  Board  of
Directors  of the Company  may,  at its  option,  at any time after the Close of
Business on the Shares  Acquisition  Date, issue Common Shares of the Company in
mandatory  redemption  of,  and in  exchange  for,  all  or  part  of  the  then
outstanding  and  exercisable  Rights (which shall not include  Rights that have
become null and void pursuant to the provisions of Section  12(a)(ii) hereof) at
an exchange  ratio of one Common Share for each two Common Shares for which each
Right is then  exercisable  pursuant  to the  

                                      -29-

<PAGE>



provisions of Section 12(a)(ii)hereof.  Notwithstanding the foregoing, the Board
of Directors  shall not be empowered to effect such  redemption  and exchange at
any time  after any  Person  (other  than the  Company,  any  Subsidiary  of the
Company, any employee benefit plan of the Company or any such Subsidiary, or any
entity  holding  Voting  Shares for or  pursuant  to the terms of any such plan)
together  with  all  Affiliates  and  Associates  of such  Person,  becomes  the
Beneficial Owner of 50% or more of the Voting Shares then outstanding.

         (b) As of the Close of Business on such date as the Board of  Directors
of the Company shall order the mandatory  redemption  and exchange of any Rights
pursuant to subsection (a) of this Section 25 and without any further action and
without any notice,  the right to exercise  such Rights shall  terminate and the
only right thereafter of a holder of such Rights shall be to receive such number
of Common Shares as is provided in paragraph (a) of this Section 25. The Company
shall promptly give public notice of any such redemption and exchange; provided,
however,  that the  failure to give,  or any defect in,  such  notice  shall not
affect the validity of such redemption and exchange.  The Company promptly shall
mail a notice of any such  redemption  and  exchange  to all the holders of such
Rights at their last  addresses  as they appear upon the  registry  books of the
Rights Agent.  Any notice which is mailed in the manner herein provided shall be
deemed given, whether or not the holder receives the notice. Each such notice of
mandatory redemption and exchange shall state the method by which the redemption
and exchange of the Common  Shares for Rights will be effected and, in the event
of any  partial  redemption  and  exchange,  the number of Rights  which will be
redeemed and  exchanged.  Any partial  redemption and exchange shall be effected
pro rata based on the number of Rights (other than Rights which have become null
and void pursuant to the  provisions of Section  12(a)(ii)  hereof) held by each
holder of Rights.

         (c) If there  shall not be  sufficient  Common  Shares  of the  Company
issued but not  outstanding,  or authorized but unissued,  to permit a mandatory
redemption  and exchange of Rights in  accordance  with the  provisions  of this
Section 25, the  Company  agrees to take all such action as is within its power,
including without limitation  appropriate  action by its Board of Directors,  as
may be necessary to amend the Company's  charter to authorize  additional Common
Shares  for  issuance  upon  such  mandatory   redemption   and  exchange.   If,
notwithstanding  the foregoing,  the shareholders shall not approve an amendment
to the Company's charter authorizing such additional Common Shares, the Company,
at its option, may substitute  Preferred Shares (or equivalent preferred shares,
as such term is defined  in  Section  12(b)  hereof)  for  Common  Shares of the
Company,  at the initial  rate of one  one-hundredth  of a  Preferred  Share (or
equivalent preferred share) for each Common Share, as appropriately adjusted.

          Section 26.  Notice of Certain  Events.  If the Company  shall,  on or
after  the  Distribution  Date,  propose  (a)  to  pay  any  dividend  or  other
distribution  payable in stock of any class of the company or any  Subsidiary of
the Company to the holders of its  Preferred  Shares,  (b) to  distribute to the
holders of its  Preferred  Shares  rights or  warrants  to  subscribe  for or to
purchase any additional  Preferred Shares or shares of stock of any class or any
other securities,  rights or options,  (c) to make any other distribution to the
holders of its Preferred  Shares (other than a regular  quarterly cash dividend,
(d) to  effect  any  reclassification  of its  Preferred  Shares  (other  than a
reclassification

                                      -30-

<PAGE>



involving only the subdivision of outstanding  Preferred Shares),  (e) to effect
any  consolidation  or  merger  into or  with,  or to  effect  any sale or other
transfer  (or to permit  one or more of its  Subsidiaries  to effect any sale or
other transfer), in one or more transactions,  of more than 50% of the assets or
earning  power of the Company and its  Subsidiaries  (determined  as provided in
Section  14  herein)  to,  any  other  Person  ( other  than  the  Company  or a
Wholly-Owned  Subsidiary  or  Wholly-  Owned  Subsidiaries),  (f) to effect  the
liquidation,  dissolution or winding up of the Company or (g) if the Rights have
theretofore  become  exercisable  with  respect to Common  Shares of the Company
pursuant to Section  12(a)(ii)  herein,  to declare or pay any dividend or other
distribution  on the Common  Shares  payable in Common Shares or in stock of any
other  class of the  Company  or any  Subsidiary  of the  Company or to effect a
subdivision  or  combination  of  the  Common  Shares  (by  reclassification  or
otherwise  than by payment of dividends  in Common  Shares)  then,  in each such
case,  the  Company  shall  give  to each  holder  of a  Right  Certificate,  in
accordance with Section 28 hereof,  notice of such proposed action,  which shall
specify the date of  authorization  of such action by the Board of  Directors of
the Company and (i) record date for such dividend or other  distribution or (ii)
the date on which such reclassification,  consolidation, merger, sale, transfer,
liquidation,  dissolution,  winding up,  subdivision  or  combination is to take
place and the date of participation  therein by the holders of the Common Shares
of the  Company  or the  Preferred  Shares,  or both,  if any such date is to be
fixed. Such notice shall be so given in the case of any action covered by clause
(a), (b) or (g) above at least 20 days prior to the record date for  determining
holders of the Preferred  Shares or of the Common Shares of the Company,  as the
case as may be, for purposes of such  action,  and in the case of any such other
action, at least 20 days prior to the date of the taking of such proposed action
or the date of  participation  therein by the holders of the Preferred Shares or
Common  Shares  of the  Company,  as the  case  may be,  whichever  shall be the
earlier.

         If any of the events set forth in Section  12(a)(ii) of this  Agreement
shall occur,  then, in any such case,  the Company shall as soon as  practicable
thereafter  give to each  holder  of a Right  Certificate,  in  accordance  with
Section 28 hereof, a notice of the occurrence of such event, which shall specify
the event and the  consequences  of the event to holders of Rights under Section
12(a)(ii) hereof.

          Section  27.  Securities  Laws  Registrations.  To the extent  legally
required,  the Company  agrees that it will prepare and file,  no later than the
Distribution  Date,  and  will  sue its best  efforts  to  cause to be  declared
effective,  a  registration  statement  under  the  Securities  Act of 1933,  as
amended,  registering  the offering,  sale and delivery of the Preferred  Shares
issuable upon exercise of the Rights, and the Company will, thereafter,  use its
best efforts to maintain such registration  statement (or another)  continuously
in effect so long as any Rights remain  outstanding and exercisable with respect
to  Preferred  Shares.  Should the Rights  become  exercisable  with  respect to
securities  of the  Company  or one of its  Subsidiaries  other  than  Preferred
Shares,  the  Company  agrees  that it will,  to the  extent  legally  required,
promptly  thereafter  prepare and file,  or cause to be prepared and filed,  and
will use its best  efforts to cause to be  declared  effective,  a  registration
statement  under such Act  registering  the offering,  sale and delivery of such
other  securities  and the Company  will,  thereafter,  use its best  efforts to
maintain such registration statement (or another) continuously in effect so long
as any outstanding Rights are exercisable with respect to such

                                      -31-

<PAGE>



securities.  The Company further agrees to use its best efforts,  from and after
the  Distribution  Date, to qualify or register for sale the Preferred Shares or
other  securities  of the  Company  or one of  its  Subsidiaries  issuable  upon
exercise of the Rights  under the  securities  or "blue sky" laws (to the extent
legally required thereunder) of all jurisdictions in which registered holders of
Right Certificates reside determined by reference to the Rights Register.

         Section 28. Notices. Notices or demands authorized by this Agreement to
be given or made by the Rights  Agent or by the holder of any Right  Certificate
to or on the Company shall be sufficiently  given to made if sent by first-class
mail, postage prepaid, addressed (until another address is filed in writing with
the Rights Agent) as follows:

                           Halliburton Company
                           3600 Lincoln Plaza
                           500 N. Akard Street
                           Dallas, Texas 75201-3391

                           Attention: Secretary

Subject to the provisions of Section 22 hereof,  any notice or demand authorized
by this  Agreement  to be given or made by the  Company  or by the holder of any
Right Certificate to or on the Rights Agent shall be sufficiently  given or made
if sent by first-class mail,  postage prepaid,  addressed (until another address
is filed in writing with the Company) as follows:

                           Chemical Mellon Shareholder Services, L.L.C.
                           2323 Bryan Street
                           Suite 2300
                           Dallas, Texas 75201

                           Attention:  Administration

Notices  or  demands  authorized  by this  Agreement  to be given or made by the
Company or the  Rights  Agent to the  holder of any Right  Certificate  shall be
sufficiently  given  or  made  if sent by  first-class  mail,  postage  prepaid,
addressed  to such  holder at the  address of such holder as shown on the Rights
Register  of the  Company  or,  prior to the  Distribution  Date,  on the  stock
transfer records for the Common Shares of the Company.

          Section 29.  Supplements  and  Amendments.  The Company and the Rights
Agent may from time to time  supplement  or amend  this  Agreement  without  the
approval of any holders of Right Certificates in order to cure any ambiguity, to
correct or supplement any provision  contained  herein which may be defective or
inconsistent  with any other provisions  herein, or to make any other provisions
in regard to matters or questions arising  hereunder,  which the Company and the
Rights  Agent may deem  necessary or  desirable,  including  without  limitation
extending  the  Final  Expiration  Date and,  provided  that at the time of such
amendment or supplement the Distribution Date has not

                                      -32-

<PAGE>



occurred, the period during which the Rights may be redeemed; provided, however,
that,  after the  Distribution  Date, any such amendment or supplement shall not
materially  and  adversely   affect  the  interests  of  the  holders  of  Right
Certificates.  Without  limiting  the  foregoing,  the Board of Directors of the
Company may by  resolution  adopted at any time prior to such time as any Person
becomes an Acquiring  Person amend this  Agreement  to lower the  threshold  set
forth in the definitions of Acquiring Person and Distribution  Date in Section 1
from 15% to a percentage not less than the greater of (i) any percentage greater
than the largest  percentage of the outstanding  Voting Shares then known to the
Company to be  beneficially  owned by any Person  (other than the  Company,  any
Subsidiary  of the  Company,  any  employee  benefit  plan of the Company or any
Subsidiary of the Company,  or any entity  holding Voting Shares for or pursuant
to the terms of any such plan), and (ii) 10%.

          Section 30.  Successors.  All the  covenants  and  provisions  of this
Agreement  by or for the benefit of the  Company or the Rights  Agent shall bind
and inure to the benefit of their respective successors and assigns hereunder.

         Section 31. Benefits of this Agreement. Nothing in this Agreement shall
be construed to give to any Person other than the Company,  the Rights Agent and
the  registered  holders of the Rights any legal or equitable  right,  remedy or
claim  under  this  Agreement;  but  this  Agreement  shall  be for the sole and
exclusive benefit of the Company, the Rights Agent and the registered holders of
the Rights.

         Section  32.  Severability.   If  any  term,  provision,   covenant  or
restriction  of this Agreement is held by a court of competent  jurisdiction  or
other  authority  to be invalid,  void or  unenforceable,  the  remainder of the
terms, provisions,  covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated.

         Section 33.  Governing Law. This  Agreement and each Right  Certificate
issued  hereunder  shall be deemed to be a  contract  made under the laws of the
State of Delaware  and for all  purposes  shall be governed by and  construed in
accordance  with the laws of such State  applicable  to contracts to be made and
performed entirely within such State.

          Section 34. Counterparts. This Agreement may be executed in any number
of counterparts and each of such  counterparts  shall for all purposes be deemed
to be an original,  and all such counterparts shall together  constitute but one
and the same instrument.

          Section 35. Descriptive Headings.  Descriptive headings of the several
Sections of this  Agreement  are  inserted  for  convenience  only and shall not
control or affect the meaning or construction of any of the provisions hereof.

          Section 36.  Effective  Date.  This Second Amended and Restated Rights
Agreement  shall  become  effective  at the opening of business on December  15,
1995.



                                      -33-

<PAGE>



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and their  respective  corporate seals to be hereunto  affixed and
attested, all as of the day and year first above written.
         
                                                    HALLIBURTON COMPANY
Attest:

By                                                   By
Title:  Secretary                                       Vice President


                                                     CHEMICAL MELLON SHAREHOLDER
                                                     SERVICES, L.L.C.
                                                     As Rights Agent
Attest:

By                                                   By
Title: Authorized Officer                               Authorized Officer





                                      -34-

<PAGE>



                                                                       Exhibit A

                           [Form of Right Certificate]

Certificate No. R-                                                  ______Rights

                  NOT  EXERCISABLE   AFTER  DECEMBER  15,  2005  OR  EARLIER  IF
                  REDEMPTION  OR  EXCHANGE  OCCURS.  THE RIGHTS  ARE  SUBJECT TO
                  REDEMPTION  AT $.01 PER RIGHT AND TO EXCHANGE ON THE TERMS SET
                  FORTH IN THE RIGHTS  AGREEMENT.  UNDER CERTAIN  CIRCUMSTANCES,
                  RIGHTS  BENEFICIALLY OWNED BY ACQUIRING PERSONS (AS DEFINED IN
                  SECTION 1 OF THE RIGHTS AGREEMENT) OR ANY SUBSEQUENT HOLDER OF
                  SUCH RIGHTS MAY BECOME NULL AND VOID.

                                Right Certificate

                               HALLIBURTON COMPANY

         This certifies that , or registered assigns, is the registered owner of
the number of Rights set forth above,  each of which entitles the owner thereof,
subject to the terms,  provisions  and  conditions  of the  Second  Amended  and
Restated Rights Agreement dated as of December 15, 1995 (the "Rights Agreement")
between  Halliburton  Company,  a  Delaware  corporation  ("the  Company"),  and
Chemical Mellon  Shareholder  Services,  L.L.P., a New Jersey limited  liability
company (the "Rights Agent"), to purchase from the Company at any time after the
Distribution Date (as such term is defined in the Rights Agreement) and prior to
5:00 P.M.  (Dallas time) on December 15, 2005 at the  Corporate  Trust Office of
the Rights Agent, one one-hundredth  (1/100) of a fully paid nonassessable share
of  Series A Junior  Participating  Preferred  Stock,  without  par  value  (the
"Preferred  Shares"),  of the  Company,  at a purchase  price of  ______________
dollars  ($_________)  per one  one-hundredth  (1/100) of a Preferred Share (the
"Purchase  Price"),  upon  presentation and surrender of this Right  Certificate
with the Form of  Election  to  Purchase  duly  executed.  The  number of Rights
evidenced by this Right  Certificate  (and the number of Preferred  Shares which
may be purchased upon exercise  thereof) set forth above, and the Purchase Price
per share set forth above,  are the number and Purchase Price as of December 15,
1995, based on the Preferred Shares as constituted at such date.

         As provided in the Rights Agreement,  the Purchase Price and the number
of one  one-hundredths  of a  Preferred  Share which may be  purchased  upon the
exercise  of  Rights  evidenced  by  this  Right   Certificate  are  subject  to
modification and adjustment upon the occurrence of certain events.


                                       A-1

<PAGE>



         The Right  Certificate  is  subject  to all the  terms,  provisions  ad
conditions of the Rights Agreement,  which terms,  provisions and conditions are
hereby  incorporated herein by reference and to which Rights Agreement reference
is hereby  made for a full  description  of the rights,  limitations  of rights,
obligations,  duties and immunities  hereunder of the Rights Agent,  the Company
and the holders of the Right Certificates. Copies of the Rights Agreement are on
file at the principal  executive  offices of the Company and the Corporate Trust
Office of the Rights Agent.

         This Right Certificate, with or without other Right Certificates,  upon
surrender  hereof at the  Corporate  Trust  Office of the Rights  Agent,  may be
exchanged  for another Right  Certificate  or Right  Certificates  of like tenor
evidencing  Rights  entitling the holder to purchase a like aggregate  number of
Preferred  Shares as the  Rights  evidenced  by the Right  Certificate  or Right
Certificates  surrendered  shall have entitled such holder to purchase.  If this
Right  Certificate  shall be exercised in part,  the holder shall be entitled to
receive upon surrender  hereof another Right  Certificate or Right  Certificates
for the number of whole Rights not exercised.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this  Certificate (i) may be redeemed by the Company at a redemption price of
one cent ($0.01) per Right or (ii) may be mandatorily  redeemed and exchanged by
the Company in whole or in part for Preferred  Shares or shares of the Company's
common stock, par value $2.50 per share.

         No fractional  Preferred Shares will be issued upon the exercise of any
Right or Rights  evidenced  hereby  (other  than  fractions  which are  integral
multiples of one one-hundredth of a Preferred Share,  which may, at the election
of the Company, be evidenced by depositary receipts), but in lieu thereof a cash
payment will be made as provided in the Rights Agreement.

         No  holder  of this  Right  Certificate  shall be  entitled  to vote or
receive  dividends  or be deemed for any  purpose  the  holder of the  Preferred
Shares  or of any  other  securities  of the  Company  which  may at any time be
issuable on the  exercise  hereof,  not shall  anything  contained in the Rights
Agreement or herein be construed to confer upon the holder hereof,  as such, any
of the rights of a stockholder of the company including  without  limitation any
right to vote for the  election of  directors  or upon any matter  submitted  to
stockholders  at any  meeting  thereof,  to  give  or  withhold  consent  to any
corporate  action,  to receive  notice of  meetings or other  actions  affecting
stockholders  (except  as  provided  in  the  Rights  Agreement)  or to  receive
dividends or subscription  rights,  until the Right or Rights  evidenced by this
Right  Certificate  shall have been exercised or such Right or Rights shall have
been mandatorily redeemed and exchanged by the Company as provided in the Rights
Agreement.

         This Right  Certificate  shall not be entitled to any benefit under the
Rights  Agreement or be valid or obligatory  for any purpose until it shall have
been authenticated by the Rights Agent.

                                       A-2

<PAGE>



         WITNESS the facsimile  signatures of the proper officers of the Company
and its corporate seal. Dated as of ------------, 19-- .

ATTEST:                                     HALLIBURTON COMPANY

                                            By:
- --------------------------                     ----------------------------
         Secretary                             

Authentication:

This is one of the Right Certificates referred to in the within-mentioned Rights
Agreement.

Chemical Mellon Shareholder Services, L.L.C. as Rights Agent


By:
    -----------------------------   
      Authorized Signature







                                       A-3

<PAGE>



                   [Form of Reverse Side of Right Certificate]


                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
                holder desires to transfer the Right Certificate)


                  FOR VALUE RECEIVED ----------------- hereby sells, assigns and
transfers unto------------------------------------------------------------------
- --------------------------------------------------------------------------------
                  (Please print name and address of transferee)

- --------------------------------------------------------------------------------
this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint -------------------- Attorney, to
transfer  the  within  Right  Certificate  on  the  books  of  the  within-named
corporation, with full power of substitution.


Dated:  ---------------, 19--.


                                    ----------------------------------------
                                    Signature

Signature Guaranteed:

         Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.

- --------------------------------------------------------------------------------
                   (To be executed if a statement is correct)

The  undersigned  hereby  certifies  that the  Rights  evidenced  by this  Right
Certificate are not beneficially owned by an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Rights Agreement).

                                    --------------------------------------------
                                    Signature

            [Form of Reverse Side of Right Certificate -- continued]

                                       A-4

<PAGE>



                          FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                         exercise the Right Certificate)


To:      HALLIBURTON COMPANY

                  The  undersigned   hereby   irrevocably   elects  to  exercise
- ---------------  Rights  represented  by this Right  Certificate to purchase the
Preferred Shares (or other securities) issuable upon the exercise of such Rights
and requests  that  certificates  for such  Preferred  Shares (or for such other
securities) be issued in the name of:

Please insert social security or other identifying number:
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                         (Please print name and address)


- --------------------------------------------------------------------------------
If such  number of Rights  shall not be all the Rights  evidenced  by this Right
Certificate,  a new Right  Certificate for the balance  remaining of such Ri hts
shall be registered in the name of and delivered to:

Please insert social security or other identifying number:
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                         (Please print name and address)

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


Dated:---------, 19--               --------------------------------------------
                                    Signature

            [Form of Reverse Side of Right Certificate -- continued]


Signature Guaranteed:


                                       A-5

<PAGE>


         Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.


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

                    (To be executed if statement is correct)

The  undersigned  hereby  certifies  that the  Rights  evidenced  by this  Right
Certificate are not beneficially owned by an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Rights Agreement).




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

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

                                     NOTICE

         The  signature in the foregoing  Forms of Assignment  and Election must
correspond  to the name as written  upon the face of this Right  Certificate  in
every particular, without alteration or enlargement or any change whatsoever.

         If the  certification  set forth above in the Form of Assignment or the
Form of Election to Purchase, as the case may be, is not completed,  the Company
and the Rights Agent will deem the beneficial  owner of the Rights  evidenced by
this Right  Certificate  to be an Acquiring  Person or an Affiliate or Associate
thereof (as defined in the Rights  Agreement)  and such  Assignment  or Election
will not be honored.








                                       A-6

<PAGE>





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