SEITEL INC
10-Q, 1996-08-14
OIL & GAS FIELD EXPLORATION SERVICES
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                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549
                                    FORM 10-Q

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

For the quarterly period ended June 30, 1996
                               -------------

                                    OR

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

     For the transition period               to              .
                               -------------    -------------

Commission File Number 0-14488
                       -------

                                  Seitel, Inc.
                ------------------------------------------------
               (Exact name of registrant as specified in charter)

          Delaware                                          76-0025431
- -------------------------------             -----------------------------------
(State or other jurisdiction of             (IRS Employer Identification Number)
 incorporation or organization)

50 Briar Hollow Lane
West Building, 7th Floor
Houston, Texas                                              77027
- --------------------------------                 --------------------------
(Address of principal executive                           (Zip Code)
offices)

                                 (713) 627-1990
               --------------------------------------------------
              (Registrant's telephone number, including area code)

                                 Not Applicable
                         -------------------------------
                         Former name, former address and
                         former fiscal year, if changed
                               since last report.

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

                               Yes X           No
                                  ---            ---

As of August 12, 1996 there were 9,969,854 shares of the Company's common stock,
par value $.01 per share, outstanding.

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




                                 Page 1 of 200
<PAGE>

                                      INDEX



PART I.   FINANCIAL INFORMATION                                           Page
                                                                        -------

          Item 1.  Financial Statements

          Consolidated Balance Sheets as of
          June 30, 1996 (Unaudited) and December 31, 1995                  3

          Consolidated Statements of Operations (Unaudited)
          for the Three Months Ended June 30,
          1996 and  1995                                                   4


          Consolidated Statements of Operations (Unaudited)
          for the Six Months Ended June 30,
          1996 and  1995                                                   5


          Consolidated Statements of Stockholders'
          Equity (Unaudited) for the Six Months Ended
          June 30,  1996                                                   6


          Consolidated Statements of Cash Flows (Unaudited)
          for the Six Months Ended June 30, 1996
          and 1995                                                         7


          Notes to Consolidated Interim
          Financial Statements                                             9


          Item 2.  Management's Discussion and
          Analysis of Financial Condition and
          Results of  Operations                                           11


PART II.  OTHER  INFORMATION                                               13



                                 Page 2 of 200
<PAGE>

<TABLE>
<CAPTION>

SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(In thousands, except share and per share amounts)

                                                               (Unaudited)
                                                                 June 30,       December 31,
                                                                  1996              1995
                                                               ---------         ---------
<S>                                                            <C>               <C>
ASSETS

   Cash and equivalents                                        $  18,902         $   6,242
   Receivables
     Trade                                                        46,839            40,992
     Notes and other                                               1,575             1,289
   Net data bank                                                 107,858           105,369
   Net oil and gas properties                                     74,977            42,424
   Net geophysical and other property and equipment               11,497            10,126
   Prepaid expenses, deferred charges and other assets             4,909             3,125
                                                               ---------         ---------
TOTAL ASSETS                                                   $ 266,557         $ 209,567
                                                               =========         =========

LIABILITIES AND STOCKHOLDERS' EQUITY

   Accounts payable and accrued liabilities                    $  22,288         $  18,422
   Income taxes payable                                              694               227
   Net liabilities of discontinued operations                        383             1,105
   Debt
     Senior Notes                                                 75,000            52,500
     Subordinated debentures                                           -             1,989
     Term Loans                                                    2,933             3,071
   Obligations under capital leases                                3,124             3,723
   Contingent payables                                               279               279
   Deferred income taxes                                           8,592             6,472
   Deferred revenue                                               22,400             1,401
                                                               ---------         ---------
TOTAL LIABILITIES                                                135,693            89,189
                                                               ---------         ---------

CONTINGENCIES AND COMMITMENTS

STOCKHOLDERS' EQUITY
   Preferred stock, par value $.01 per share;
     authorized 5,000,000 shares; none issued                          -                 -
   Common stock, par value $.01 per share;
     authorized 20,000,000 shares; issued and
     outstanding 9,764,044 and 9,436,854 at June
     30, 1996 and December 31, 1995, respectively                     98                94
   Additional paid-in capital                                     90,026            85,821
   Retained earnings                                              42,168            35,936
   Treasury stock, 409 and 414 shares at cost at
     June 30,1996 and December 31, 1995, respectively                 (4)               (4)
   Notes receivable from officers and employees                   (1,350)           (1,395)
   Cumulative translation adjustment                                 (74)              (74)
                                                               ---------         ---------
TOTAL STOCKHOLDERS' EQUITY                                       130,864           120,378
                                                               ---------         ---------

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                     $ 266,557         $ 209,567
                                                               =========         =========
</TABLE>

                                          The accompanying notes are an integral
                                          part of these  consolidated  financial
                                          statements




                                 Page 3 of 200
<PAGE>

<TABLE>
<CAPTION>

SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)
(In thousands, except per share amounts)
                                                                 Three Months Ended June 30,
                                                                 ---------------------------
                                                                    1996             1995
                                                                  --------         --------
<S>                                                               <C>              <C>
REVENUE                                                           $ 27,180         $ 22,143

EXPENSES:
   Depreciation, depletion and amortization                         10,111            7,199
   Cost of sales                                                     4,399            4,440
   Selling, general and administrative expenses                      5,346            4,480
   Net interest expense                                                727              912
                                                                  --------         --------
                                                                    20,583           17,031
                                                                  --------         --------

Income from continuing operations before provision
   for income taxes                                                  6,597            5,112

Provision for income taxes                                           2,441            1,891
                                                                  --------         --------

Income from continuing operations                                    4,156            3,221
Income from discontinued operations, net of income
   tax expense of $71                                                    -              120
Loss on disposal of discontinued operations, net of
   income tax benefit of $580                                         (988)               -
                                                                  --------         --------

NET INCOME                                                        $  3,168         $  3,341
                                                                  ========         ========

Earnings per share:
   Primary
     Income from continuing operations                            $    .41         $    .33
     Income from discontinued operations                                 -              .01
     Loss on disposal of discontinued operations                      (.10)               -
                                                                  --------         --------
     Net income                                                   $    .31         $    .34
                                                                  ========         ========
   Assuming full dilution
     Income from continuing operations                            $    .41         $    .32
     Income from discontinued operations                                 -              .01
     Loss on disposal of discontinued operations                      (.10)               -
                                                                  --------         --------
     Net income                                                   $    .31         $    .33
                                                                  ========         ========

Weighted average number of common and common equivalent shares:
   Primary                                                          10,258            9,929
                                                                  ========         ========
   Assuming full dilution                                           10,273           10,170
                                                                  ========         ========
</TABLE>

                                          The accompanying notes are an integral
                                          part of these  consolidated  financial
                                          statements.



                                 Page 4 of 200
<PAGE>


<TABLE>
<CAPTION>

SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)
(In thousands, except per share amounts)

                                                                  Six Months Ended June 30,
                                                                  -------------------------
                                                                    1996             1995
                                                                  --------         --------

<S>                                                               <C>              <C>
REVENUE                                                           $ 47,446         $ 38,751

EXPENSES:
   Depreciation, depletion and amortization                         18,157           14,473
   Cost of sales                                                     7,669            4,787
   Selling, general and administrative expenses                      8,849            8,229
   Net interest expense                                              1,311            1,726
                                                                  --------         --------
                                                                    35,986           29,215
                                                                  --------         --------

Income from continuing operations before provision
   for income taxes                                                 11,460            9,536

Provision for income taxes                                           4,240            3,528
                                                                  --------         --------

Income from continuing operations                                    7,220            6,008
Income from discontinued operations, net of income
   tax expense of $181                                                   -              307
Loss on disposal of discontinued operations, net
   of income tax benefit of $580                                      (988)               -
                                                                  --------         --------

NET INCOME                                                        $  6,232         $  6,315
                                                                  ========         ========

Earnings per share:
   Primary
     Income from continuing operations                            $    .72         $    .62
     Income from discontinued operations                                 -              .03
     Loss on disposal of discontinued operations                      (.10)               -
                                                                  --------         --------
     Net income                                                   $    .62         $    .65
                                                                  ========         ========
   Assuming full dilution
     Income from continuing operations                            $    .71         $    .60
     Income from discontinued operations                                 -              .03
     Loss on disposal of discontinued operations                      (.10)               -
                                                                  --------         --------
     Net income                                                   $    .61         $    .63
                                                                  ========         ========

Weighted average number of common and common equivalent shares:
   Primary                                                          10,131            9,784
                                                                  ========         ========
   Assuming full dilution                                           10,248           10,091
                                                                  ========         ========
</TABLE>
                                          The accompanying notes are an integral
                                          part of these  consolidated  financial
                                          statements.




                                 Page 5 of 200
<PAGE>


<TABLE>
<CAPTION>
SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
(In thousands, except share amounts)

                                                                                                        Notes
                                        Common Stock      Additional              Treasury Stock     Receivables       Cumulative
                                     -----------------     Paid-in     Retained   ---------------   from Officers     Translation
                                     Shares     Amount     Capital     Earnings   Shares   Amount    & Employees      Adjustments
                                    ---------   ------     -------     --------   ------   ------    -----------      -----------

<S>                                 <C>          <C>       <C>          <C>       <C>      <C>          <C>             <C>
Balance, December 31, 1992          5,976,472    $  60     $25,672      $12,225      --    $  --        $(2,150)        $  (164)
  Proceeds from issuance of
    common stock                       10,916       --          37           --      --       --             --              --
  Payments received on notes
    receivable from officers
    and employees                          --       --          --           --    (414)      (4)           111              --
  Foreign currency translation
    adjustment                             --       --          --           --      --       --             --              79
  Net income                               --       --          --        5,717      --       --             --              --
                                    ---------    -----     -------      -------   -----    -----        -------         -------
Balance, December 31, 1993          5,987,388       60      25,709       17,942    (414)      (4)        (2,039)            (85)
  Sale of common stock through
    public offering                 1,061,200       11      31,906           --      --       --             --              --
  Proceeds from issuance
    of common stock                   770,364        7       7,280           --      --       --             --              --
  Tax reduction from exercise
    of stock options                       --       --       1,879           --      --       --             --              --
  Conversion and exchanges of
    subordinated debentures         1,006,667       10       8,837           --      --       --             --              --
  Payments received on notes
    receivable from officers
    and employees                          --       --          --           --      --       --            488              --
  Foreign currency translation
    adjustment                             --       --          --           --      --       --             --              13
  Net income                               --       --          --        9,315      --       --             --              --
                                    ---------    -----     -------      -------   -----    -----        -------         -------
Balance, December 31, 1994          8,825,619       88      75,611       27,257    (414)      (4)        (1,551)            (72)
  Proceeds from issuance of
    common stock                      445,939        4       6,894           --      --       --             --              --
  Tax reduction from exercise
    of stock options                       --       --       1,900           --      --       --             --              --
  Conversions and exchanges
    of subordinated debentures        165,296        2       1,416           --      --       --             --              --
  Payments received on notes
    receivable from officers
    and employees                          --       --          --           --      --       --            156              --
  Foreign currency translation
    adjustment                             --       --          --           --      --       --             --              (2)
  Net income                               --       --          --        8,679      --       --             --              --
                                    ---------    -----     -------      -------   -----    -----        -------         -------
Balance, December 31, 1995          9,436,854       94      85,821       35,936    (414)      (4)        (1,395)            (74)
  Proceeds from issuance of
    common stock                      112,886        2       1,959           --       5       --             --              --
  Tax reduction from exercise
    of stock options                       --       --         368           --      --       --             --              --
  Conversions and exchanges of
    subordinated debentures           214,304        2       1,878           --      --       --             --              --
  Payments received on notes
    receivable from officers
    and employees                          --       --          --           --      --       --             45              --
  Net Income                               --       --          --        6,232      --       --             --              --
                                    ---------    -----     -------      -------   -----    -----        -------         -------

Balance, June 30, 1996 (unaudited)  9,764,044    $  98     $90,026      $42,168    (409)   $  (4)       $(1,350)        $   (74)
                                    =========    =====     =======      =======   =====    ======       =======         =======
</TABLE>


                                     The accompanying notes are an integral part
                                     of these consolidated financial statements.

                                 Page 6 of 200
<PAGE>



<TABLE>
<CAPTION>
SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)
(In thousands)
                                                              Six Months Ended June 30,
                                                              -------------------------
                                                                1996             1995
                                                              --------         --------
<S>                                                           <C>              <C>
Cash flows from operating activities:
   Cash received from customers                               $ 43,789         $ 40,567
   Proceeds from volumetric production payment                  20,000                -
   Cash paid to suppliers and employees                        (23,363)         (18,329)
   Interest paid                                                (1,724)            (503)
   Interest received                                               439               13
   Income taxes paid                                              (800)          (2,452)
                                                              --------         --------
     Net cash provided by operating activities                  38,341           19,296
                                                              --------         --------

Cash flows from investing activities:
   Cash invested in seismic data                               (14,008)         (27,376)
   Cash invested in oil and gas properties                     (32,479)         (12,261)
   Cash paid to acquire property and equipment                  (3,100)            (761)
   Cash from disposal of property and equipment                     59                -
   Advances made to oil and gas joint venture partner                -           (1,142)
   Collections on loans made                                        94                -
                                                              --------         --------
     Net cash used in investing activities                     (49,434)         (41,540)
                                                              --------         --------

Cash flows from financing activities:
   Borrowings under line of credit agreements                        -           41,489
   Principal payments under line of credit                           -          (23,019)
   Borrowings under term loan                                      433                -
   Principal payments on term loans                               (571)            (398)
   Principal payments on capital lease obligations                (640)            (751)
   Payments on notes receivable from officers and employees         45                -
   Proceeds from issuance of senior notes                       22,500                -
   Proceeds from issuance of common stock                        1,970            5,173
   Costs of debt and equity transactions                           (36)             (45)
                                                              --------         --------
     Net cash provided by financing activities                  23,701           22,449
                                                              --------         --------

Effect of exchange rate changes                                   (182)               -
                                                              --------         --------

Net increase in cash and equivalents                            12,426              205

Cash and cash equivalents at beginning of period:
   Continuing operations                                         6,242              846
   Discontinued operations                                         234              695
                                                              --------         --------
     Total cash and equivalents at beginning of period           6,476            1,541
                                                              --------         --------

Cash and cash equivalents at end of period:
   Continuing operations                                        18,902            1,621
   Discontinued operations                                           -              125
                                                              --------         --------
     Total cash and equivalents at end of period              $ 18,902         $  1,746
                                                              ========         ========
</TABLE>

                                          The accompanying notes are an integral
                                          part of these  consolidated  financial
                                          statements.


                                 Page 7 of 200
<PAGE>


<TABLE>
<CAPTION>

SEITEL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited), continued
(In thousands)
                                                                             Six Months Ended June 30,
                                                                             -------------------------
                                                                               1996             1995
                                                                             --------         --------
<S>                                                                          <C>              <C>
Reconciliation of net income to net cash provided by operating activities:
Net income                                                                   $  6,232         $  6,315
Adjustments to reconcile net income to net cash provided by
   operating activities:
   Depreciation, depletion and amortization                                    18,619           14,708
   Loss (income) from discontinued operations, net of tax                         988             (307)
   Non-cash sales (Note E)                                                          -           (1,000)
   Gain on sale of property and equipment                                         (22)               -
   Increase in receivables                                                     (6,227)          (4,735)
   Increase in other assets                                                    (2,021)          (1,662)
   Proceeds from volumetric production payment                                 20,000                -
   Increase in other liabilities                                                2,715            5,411
                                                                             --------         --------
     Total adjustments                                                         34,052           12,415

Net cash provided by (used in) operating activities of:
   Continuing operations                                                       40,284           18,730
   Discontinued operations                                                     (1,943)             566
                                                                             --------         --------
                                                                             $ 38,341         $ 19,296
                                                                             ========         ========

</TABLE>

                   The accompanying notes are an integral part
                   of these consolidated financial statements.



                                 Page 8 of 200
<PAGE>



SEITEL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED INTERIM FINANCIAL STATEMENTS (Unaudited)
June 30, 1996

NOTE A-BASIS OF PRESENTATION

   The  accompanying  unaudited  financial  statements  have  been  prepared  in
accordance with generally accepted  accounting  principles for interim financial
information and with the  instructions of Regulation S-X.  Accordingly,  they do
not include all of the  information  and notes  required by  generally  accepted
accounting  principles  for  complete  financial  statements.  In the opinion of
management, all adjustments (consisting of normal recurring accruals) considered
necessary for a fair presentation have been included.  Certain reclassifications
have been  made to the  amounts  in the prior  year's  financial  statements  to
conform to the current year's presentation. Operating results for the six months
ended June 30, 1996 are not  necessarily  indicative  of the results that may be
expected for the year ending December 31, 1996. For further  information,  refer
to the financial  statements  and notes thereto for the year ended  December 31,
1995.


NOTE B-EARNINGS PER SHARE

         Earnings  per  share  is  based  on  the  weighted  average  number  of
outstanding  shares of common stock  during the  respective  periods,  including
common  equivalent  shares  applicable to assumed  exercise of stock options and
warrants  when such common stock  equivalents  are  dilutive,  and the Company's
other potentially dilutive securities.

         Earnings per share was  determined by dividing net income,  as adjusted
below, by applicable shares outstanding (in thousands):
<TABLE>
<CAPTION>

                                                            Three Months    Six Months
                                                               Ended           Ended
                                                              June 30,        June 30,
                                                                1995           1995
                                                              --------       --------
<S>                                                           <C>            <C>
Net income as reported                                        $ 3,341        $ 6,315
Interest eliminated on assumed conversion of 9%
   convertible subordinated debentures                             25             50
                                                              -------        -------
Total income used for fully diluted earnings per share        $ 3,366        $ 6,365
                                                              =======        =======
Weighted average number of common and
   common equivalent shares                                     9,929          9,784
                                                              =======        =======
Weighted average number of common shares-
   assuming full dilution                                      10,170         10,091
                                                              =======        =======
</TABLE>

NOTE C-DATA BANK

         Costs  incurred  in  the  creation  of  proprietary  seismic  data  are
capitalized. Seismic data costs are amortized for each project in the proportion
that its  revenue  for a period  relates to  management's  estimate  of ultimate
revenue.  Since inception,  management has established  guidelines regarding its
annual charge for amortization. Under these guidelines, 90% of the cost incurred
in the creation of  proprietary  seismic data is amortized  within five years of
inception for  two-dimensional  seismic data and within seven years of inception
for  three-dimensional  seismic  data,  and  the  final  10% is  amortized  on a
straight-line basis over fifteen years. Costs of existing seismic data libraries
purchased  by the  Company  are fully  amortized  within  ten years from date of
purchase.  On a periodic basis,  the carrying value of each seismic data program
is compared to its estimated  future revenue and, if appropriate,  is reduced to
its estimated net realizable value.



                                 Page 9 of 200
<PAGE>


NOTE D-OIL AND GAS PROPERTIES

         The Company  accounts for its oil and gas  exploration  and  production
activities  using the full-cost  method of  accounting.  Under this method,  all
costs  associated with  acquisition,  exploration and development of oil and gas
reserves,  including  directly related overhead costs and interest costs related
to its unevaluated properties and certain properties under development which are
not currently being amortized,  are  capitalized.  For the six months ended June
30, 1996 and 1995,  general and  administrative  costs of $506,000 and $401,000,
respectively,  have  been  capitalized  to oil and gas  properties.  For the six
months ended June 30, 1996 and 1995,  interest  costs of $642,000 and  $304,000,
respectively, have been capitalized to oil and gas properties.

         In June 1996,  the Company's  exploration  and  production  subsidiary,
along with certain general  partnerships  for which it acts as managing  partner
and in which  certain  officers,  directors  and  employees  of the  Company and
members of their  immediate  families are partners,  acquired an additional  30%
working  interest in certain oil and gas  properties  for $26.5 million in cash.
The Company's subsidiary acquired a working interest of approximately 28.5%, and
such partnerships acquired a working interest of approximately 1.5%. The Company
previously owned a 19% working interest in such properties and such partnerships
owned a 1% working  interest.  At the same time,  the Company  sold a volumetric
production  payment for $20 million to certain limited  partnerships.  Under the
terms of the production payment agreements, the Company conveyed a real property
interest  of  approximately  8 billion  cubic  feet of certain  natural  gas and
approximately  380,000  barrels  of other  hydrocarbons  to the  purchaser.  The
Company  retains  responsibility  for its working  interest share of the cost of
operations. The proceeds of the sale were applied toward the acquisition cost of
the oil and gas properties.  The Company  accounted for the proceeds received in
the  transaction  as deferred  revenue which will be amortized  into revenue and
income as natural gas and other  hydrocarbons  are produced and delivered during
the term of the volumetric production payment agreements.

NOTE E-SUPPLEMENTAL CASH FLOW INFORMATION

Significant non-cash investing and financing activities are as follows:

     1.   During  the first six  months of 1996 and  1995,  the  Company  issued
          214,304 and 157,216 shares, respectively, of its common stock upon the
          conversion and exchange of $1,989,000 and $1,457,000, respectively, of
          its 9% convertible subordinated  debentures.  In connection with these
          conversions  and  exchanges,  unamortized  bond issue  costs  totaling
          $109,000  and  $93,000  during  the first six months of 1996 and 1995,
          respectively, have been charged to additional paid-in-capital.

     2.   During the first six months of 1995, the Company licensed seismic data
          valued at $1,000,000, in exchange for the purchase of seismic data for
          its library.


NOTE F--DISCONTINUED OPERATIONS

         On March 22, 1996, the Company's Board of Directors unanimously adopted
a plan of  disposal to  discontinue  the  Company's  gas  marketing  operations.
Accordingly,  the Company's consolidated financial statements as of December 31,
1995, were restated to reflect the discontinued operations.  Effective August 1,
1996, the Company  assigned  substantially  all of its contracts to purchase and
supply  natural gas to a retail energy  marketer.  During the quarter ended June
30, 1996, the Company recorded an additional loss from  discontinued  operations
of $988,000, which is net of an income tax benefit of $580,000, primarily due to
changes  in  market  prices to  purchase  gas  supply.  The net  liabilities  of
discontinued  operations at June 30, 1996, consist primarily of accounts payable
and accrued liabilities offset by trade receivables and income tax benefits.



                                 Page 10 of 200
<PAGE>


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

RESULTS OF OPERATIONS
- ---------------------

         Total revenue increased 23% and 22% during the second quarter and first
six months of 1996,  respectively,  as compared to the second  quarter and first
six months of 1995.  Revenue  primarily  consists of revenue  generated from the
seismic  business and oil and gas  production.  Seismic  revenue  increased from
$21,193,000  during the second quarter of 1995 to $23,419,000  during the second
quarter of 1996,  primarily  due to an  increase in revenue  generated  from the
licensing of seismic data  currently in the Company's  library.  The increase in
seismic  revenue  from  $36,991,000  during  the  first  six  months  of 1995 to
$41,300,000 during the first six months of 1996 is primarily  attributable to an
increase in proprietary  data  acquisition  performed for outside parties by the
Company's crew  subsidiary.  Oil and gas revenue  increased from $950,000 in the
second quarter of 1995 to $3,761,000 in the second quarter of 1996 and increased
from  $1,760,000  in the first six months of 1995 to $6,146,000 in the first six
months of 1996.  These  increases  in oil and gas  revenue are due to more wells
being on line during the 1996 periods as compared to the 1995 periods and due to
higher  prices  being  received on oil and gas  production.  At June 30, 1996, a
total of 82 wells were  producing as compared to a total of 45 wells at June 30,
1996.

         Depreciation,  depletion and  amortization  consists  primarily of data
bank  amortization.  Refer  to  Note  C  for  a  description  of  the  Company's
amortization policy. Data bank amortization increased from $6,637,000 during the
second  quarter of 1995 to  $8,498,000  during  the  second  quarter of 1996 and
increased from  $13,380,000 to $15,488,000  for the first six months of 1995 and
1996, respectively. As a percentage of revenue from licensing seismic data, data
bank  amortization  was 44% and 48% for the  second  quarter  of 1995 and  1996,
respectively,  and 44%  and 49% for the  first  six  months  of 1995  and  1996,
respectively.  These  changes are primarily due to the mix of sales of 2D and 3D
data amortized at varying  percentages  based on each data program's current and
expected future revenue stream.

         Cost of sales consists of expenses  associated  with the acquisition of
seismic data for non-affiliated  parties,  seismic resale support services,  and
oil and gas  production.  Cost of sales  decreased from $4,440,000 to $4,399,000
for the  second  quarter  of 1995 and 1996,  respectively,  and  increased  from
$4,787,000  to   $7,669,000   for  the  first  six  months  of  1995  and  1996,
respectively.  The  increase  in cost of  sales  for the  first  half of 1996 is
primarily  due  to an  increase  in  the  cost  of  sales  associated  with  the
acquisition  of seismic data for  non-affiliated  parties  that  occurred in the
first  quarter of 1996.  During the first quarter of 1995,  the  Company's  crew
subsidiary  performed work solely for the Company's seismic data and exploration
and production  subsidiaries for which no revenue or costs are recognized in the
consolidated  statement of  operations.  During the first  quarter of 1996,  the
Company's crew  subsidiary  performed work for outside parties and the Company's
subsidiaries,  resulting  in revenue  and cost of sales being  reflected  in the
consolidated statement of operations for the work performed for outside parties.
During the second  quarter of 1996,  the mix of work  performed by the Company's
crew  subsidiary  was  similar to the second  quarter of 1995 and  resulted in a
minimal change in the cost of sales. Additionally, cost of sales associated with
oil and gas  production  increased  during the second  quarter and first half of
1996 as compared to the same periods in 1995 due to the  corresponding  increase
in oil and gas revenue.  Revenues from these areas increased from $6,849,000, to
$9,239,000  during  the  second  quarter  of 1995 and  1996,  respectively,  and
increased from $7,844,000 to $15,036,000 during the first six months of 1995 and
1996, respectively.

         The Company's selling,  general and  administrative  expenses increased
during the 1996 periods as compared to the 1995 periods primarily as a result of
variable  expenses related to the increased volume of business.  As a percentage
of total  revenue,  these  expenses were 20% for the second  quarter of 1995 and
1996,  and  decreased  from 21% for the first six  months of 1995 to 19% for the
first six months of 1996.

         The  decrease  in net  interest  expense  during  the 1996  periods  as
compared to the 1995 periods is primarily due to an increase in interest  income
earned on the investment of increased cash balances.

         On March 22, 1996, the Company's Board of Directors unanimously adopted
a plan of  disposal to  discontinue  the  Company's  gas  marketing  operations.

                                 Page 11 of 200
<PAGE>

Accordingly,  the Company's consolidated financial statements as of December 31,
1995, were restated to reflect the discontinued operations.  Effective August 1,
1996, the Company  assigned  substantially  all of its contracts to purchase and
supply  natural gas to a retail energy  marketer.  During the quarter ended June
30, 1996, the Company recorded an additional loss from  discontinued  operations
of $988,000, which is net of an income tax benefit of $580,000, primarily due to
changes in market prices to purchase gas supply;  such loss represents the final
charge related to the discontinued operations.

         On July 3, 1996, the Company  acquired a 50% equity  interest in Energy
Research  International  ("ERI"), a holding company which wholly owns two marine
seismic  companies,   Horizon  Exploration  Limited  and  Horizon  Seismic  Inc.
Beginning July 3, 1996,  financial results from the Company's equity interest in
ERI will be included in the Company's consolidated financial statements.

LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------

         On December  28,  1995,  the Company  completed a private  placement of
three  series of  unsecured  Senior  Notes  totaling  $75  million.  The Company
contemporaneously  issued  its Series A Notes and  Series B Notes,  which  total
$52.5 million and bear interest at a fixed rate of 7.17%.  On April 9, 1996, the
Company  issued its Series C Notes,  which total $22.5 million and bear interest
at a fixed rate of 7.48%.  The Series A Notes mature on December  30, 2001,  and
require annual principal payments of $8.333 million beginning December 30, 1999.
The Series B and Series C Notes mature on December 30, 2002,  and require annual
principal payments of $10 million beginning  December 30, 1998.  Interest on all
series of the notes is payable  semi-annually  on June 30 and  December  30. The
Company  used the majority of the proceeds of the Series A and Series B Notes to
repay amounts outstanding under a $25 million revolving line of credit,  amounts
outstanding  under a wholly-owned  subsidiary's $75 million  reducing  revolving
line of credit,  and amounts owed to a seismic  contractor.  The proceeds of the
Series C Notes  are being  used  primarily  to fund  petroleum  exploration  and
development  activities  of its  wholly-owned  subsidiary  and for other working
capital or general corporate purposes.

         The  Company  filed a  registration  statement  on Form S-3 (the "Shelf
Registration  Statement") in June 1994 to offer from time to time in one or more
series (i) unsecured debt securities, which may be senior or subordinated,  (ii)
preferred  stock,  par value $0.01 per share,  and (iii) common stock, par value
$.01 per share,  or any  combination of the foregoing,  at an aggregate  initial
offering price not to exceed $75,000,000.  The Shelf Registration  Statement was
declared  effective by the Securities and Exchange  Commission on June 30, 1994.
In August 1994, the Company  completed a public offering of 1,061,200  shares of
its common  stock  priced at $32 per share  pursuant  to the Shelf  Registration
Statement. The net proceeds from the offering (after underwriting commission and
offering  expenses) totaled  $31,917,000.  After this sale of common stock at an
initial  aggregate  offering  price  of  $33,958,400,   the  Company  may  offer
additional  securities  in the future for up to an  aggregate  initial  offering
price of $41,041,600 pursuant to the Shelf Registration Statement.

         On July 22, 1996, the Company  entered into an agreement with The First
National Bank of Chicago for a $25,000,000  unsecured  revolving  line of credit
facility.  The facility bears interest at a rate  determined by the ratio of the
Company's  debt to cash flow from  operations.  While the company has no amounts
outstanding  under the  facility  at this time,  pursuant to the  interest  rate
pricing structure,  $25,000,000  currently could be borrowed at LIBOR plus 3/4%,
the bank's prevailing prime rate, or the sum of the Federal Funds effective rate
for such day plus 1/2%. The facility matures on July 22, 1999.

         On July 9, 1996, a wholly-owned  subsidiary of the Company obtained two
term loans  aggregating  $7,264,000  for the purchase of land and marine seismic
equipment which secures the debt. The first term loan has a principal  amount of
$5,902,000,  is for a term of five years and bears  interest  at the rate of 8%.
Monthly principal and interest payments total $120,000.  The balance outstanding
on this loan at August  12,  1996 was  $5,822,000.  The  second  term loan has a


                                 Page 12 of 200
<PAGE>


principal amount of $1,362,000,  is for a term of three years and bears interest
at the rate of 8.06%. Monthly principal and interest payments on the second term
loan total $43,000.  The balance outstanding on this loan at August 12, 1996 was
$918,000. The Company expects to draw the remaining principal amount of $444,000
by the end of August, 1996.

         Prior  to the  second  quarter  of  1996,  the  Company  and two of its
wholly-owned subsidiaries obtained four separate term loans totaling $5,449,000,
three of which have a three year term and one which has a five year term. Two of
the loans bear interest at the rate of 8.413%,  one at the rate of 7.61% and one
at the rate of  7.52%.  The  proceeds  were  used for the  purchase  of  certain
property and equipment  which secures the debt.  Monthly  principal and interest
payments total approximately  $121,000.  The balance outstanding on the loans at
August 12, 1996, was $2,726,000.

         During  1994  and  1995,  the  Company  and  one  of  its  wholly-owned
subsidiaries entered into three capital leases which relate to the purchase of a
second 3D seismic recording system and a seismic data processing  center.  These
lease  agreements  are for terms of three to five years.  Monthly  principal and
interest payments total  approximately  $125,000.  The balance outstanding under
these capital lease obligations was $3,009,000 at August 12, 1996.

         From January 1, 1996  through  August 12,  1996,  the Company  received
$3,609,000  from the exercise of common stock purchase  warrants and options and
the Company's  401(k) stock  purchases.  In connection  with the exercises,  the
Company will also receive approximately $489,000 in tax savings.

         In February 1996, the Company called for the March 31, 1996  redemption
of  its 9%  convertible  subordinated  debentures,  thereby  eliminating  future
interest  and  sinking  fund  payments.  All  remaining  outstanding  debentures
converted to common stock.

         During the first six months of 1996,  cash from operations and proceeds
from its Senior  Notes,  the  exercise of common  stock  purchase  warrants  and
options,  and the volumetric  production  payment funded the third party seismic
data  creation  costs  borne  by the  Company  and oil and gas  exploration  and
development  costs,  as well as  taxes,  interest  expenses,  cost of sales  and
general and  administrative  expenses.  The Company  believes its revenues  from
operating  sources,  remaining  proceeds from its Senior Notes and proceeds from
the  exercise of warrants  and  options,  combined  with its  available  line of
credit,  should be sufficient to fund its capital  expenditures  for 1996, along
with expenditures for operating and general and administrative  expenses. To the
extent these  sources are not  sufficient to cover the  Company's  expenses,  it
would be  necessary  for the  Company to arrange for  additional  debt or equity
financing.  There  can be no  assurance  that  the  Company  would  be  able  to
accomplish any such debt or equity financing on terms satisfactory to it.


                           PART II - OTHER INFORMATION
                           ---------------------------

Item 1.  LEGAL PROCEEDINGS.
- ---------------------------

         As previously  reported by the Company in its Quarterly  Report or Form
10-Q for the quarter ended March 31, 1996, on May 25, 1995, Seitel  Geophysical,
Inc.  ("SGI"),  a wholly-owned  subsidiary of the Company,  filed suit in United
States District Court for the Eastern  District of Louisiana  against  Greenhill
Petroleum  Corporation  ("Greenhill")  for  breach of  contract.  SGI  sought to
recover  approximately  $1.4  million  owed by Greenhill to SGI for seismic data
acquisition  services  provided to Greenhill by SGI in 1994 in connection with a
3D seismic data shoot in southern  Louisiana.  Greenhill  generally denied SGI's
allegations and asserted  counter-claims  against SGI. Prior to SGI bringing the
suit against  Greenhill,  Greenhill had already paid SGI in excess of $7 million
under the  contract,  and SGI had provided the seismic data  acquired  under the
contract to Greenhill.  This lawsuit was tried in late May,  1996,  and judgment
was  entered  on June  10,  1996 in favor of SGI for  damages  of  approximately
$940,000,  including legal fees, expenses,  and pre-judgment interest. The trial
court  denied  all of  Greenhill's  counter-claims  against  SGI.  Greenhill  is
appealing  this judgment.  Post-judgment  interest based on the rate of one year
Treasury Bills (currently 5.62%) is accruing on the full amount of the judgment.
While the outcome of this appeal cannot be predicted with certainty, the Company
believes that the trial court's award will be upheld.

Items 2., 3., 4., and 5.   Not applicable.
- ------------------------
                                 Page 13 of 200
<PAGE>


Item 6.  Exhibits and Reports on Form 8-K.
- ------------------------------------------

(a)  EXHIBITS
     --------

     10.1 Statement of  Amendments  effective  November 29, 1995, to the Seitel,
          Inc. 1993 Incentive Stock Option Plan.

     10.2 Statement of Amendments  effective April 22, 1996, to the Seitel, Inc.
          1993 Incentive Stock Option Plan.

     10.3 Seitel, Inc. Non-Employee Directors' Deferred Compensation Plan.

     10.4 Loan and Security  Agreement dated as of July 9, 1996,  between Seitel
          Geophysical,  Inc. (Company's wholly-owned subsidiary) and NationsBanc
          Leasing Corporation of North Carolina.

     10.5 Revolving  Credit  Agreement dated as of July 22, 1996,  among Seitel,
          Inc. and The First National Bank of Chicago.

(b)  Not applicable


                                 Page 14 of 200
<PAGE>



                                   SIGNATURES


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


                                        SEITEL, INC.





Dated:   August 13, 1996                /s/ Paul A. Frame
                                        -----------------
                                        Paul A. Frame
                                        President and Chief Executive Officer





Dated:   August 13, 1996                /s/ Debra D. Valice
                                        -------------------
                                        Debra D. Valice
                                        Chief Financial Officer





Dated:   August 13, 1996                /s/ Marcia H. Kendrick
                                        ----------------------
                                        Marcia H. Kendrick
                                        Chief Accounting Officer


                                 Page 15 of 200
<PAGE>




                               EXHIBIT INDEX                              Page

10.1      Statement of Amendments effective November 29, 1995,             17
          to the Seitel, Inc. 1993 Incentive Stock Option Plan.


10.2      Statement of Amendments effective April 22, 1996,                18
          to the Seitel, Inc. 1993 Incentive Stock Option Plan.


10.3      Seitel, Inc. Non-Employee Directors' Deferred                    19
          Compensation Plan.


10.4      Loan and Security Agreement dated as of July 9, 1996,            26
          between Seitel Geophysical, Inc. (Company's wholly-owned
          subsidiary) and NationsBanc Leasing Corporation
          of North Carolina.


10.5      Revolving Credit Agreement dated as of July 22, 1996,            73
          among Seitel, Inc. and The First National Bank of Chicago.


Ex-27     Financial Data Schedule for Quarter Ended June 30, 1996          200


                                 Page 16 of 200


                                  EXHIBIT 10.1

                  SEITEL, INC. 1993 INCENTIVE STOCK OPTION PLAN
               Statement of Amendments Effective November 29, 1995

1.   The  definition  of the term  "Options"  set forth in  Section II is hereby
     amended to read in its entirety as follows:

          (7)  Options   shall  mean  the   Incentive   Stock  Options  and  the
     Non-Qualified  Stock  Options  granted from time to time under the Plan. If
     Options are not  designated  as Incentive  Stock  Options or  Non-Qualified
     Stock  Options at the time of grant,  the number of Options  granted  which
     qualify for  treatment as Incentive  Stock  Options  under the Code will be
     Incentive Stock Options, and the remainder of such Options, if any, will be
     Non-Qualified Stock Options.

2.   The following new definitions are hereby added to Section II:

          (10)  Incentive  Stock Option shall mean a stock option  granted under
     the Plan that is  intended  to be an  incentive  stock  option  within  the
     meaning of Section 422 of the Code.

          (11)  Non-Qualified  Stock Option  shall mean a stock  option  granted
     under the Plan that is not an incentive  stock option within the meaning of
     Section 422 of the Code.

3.   The  subsection of Section VII headed  "Option  Price" is hereby amended to
     read in its entirety as follows:

          The  purchase  price of each Share  placed  under an  Incentive  Stock
     Option shall be determined by the Committee,  but shall in no event be less
     than one hundred  percent  (100%) of the Fair Market Value of such Share on
     the date the Incentive Stock Option is granted. However, the purchase price
     of each Share placed under an Incentive  Stock Option to a Participant  who
     owns stock  possessing  more than ten percent  (10%) of the total  combined
     voting  power of all classes of stock of the Company or any  Subsidiary  at
     the time of the grant shall be at least one hundred and ten percent  (110%)
     of the Fair  Market  Value of such Share on the date the Option is granted.
     The purchase price of each Share placed under a Non-Qualified  Stock Option
     shall be determined by the  Committee,  and may be less than,  equal to, or
     greater  than  the  Fair  Market  Value  of  such  Share  on the  date  the
     Non-Qualified Stock Option is granted.

4.   The first two  sentences of the  subsection  of Section VII headed  "Option
     Period and Terms" are hereby amended to read in their entirety as follows:

          No option shall be exercisable  after the expiration of ten (10) years
     from the date such Option is granted.  However,  if the Participant to whom
     an Incentive  Stock Option is granted owns stock  possessing  more than ten
     percent (10%) of the total combined voting power of all classes of stock of
     the Company or any Subsidiary at the time such Incentive Stock Option shall
     not be  exercisable  after the  expiration  of five (5) years from the date
     such Incentive Stock option is granted.

5.   The subsection of Section VII headed  "Maximum  Annual Amount Per Employee"
     is hereby amended to read in its entirety as follows:

          The  aggregate  fair  market  value  (determined  as of the  time  the
     Incentive  Stock  Option is  granted)  of the stock  with  respect to which
     Incentive  Stock  Options  are  exercisable  for  the  first  time  by  any
     Participant during any calendar year (under this and any other plans of the
     Company or any Subsidiary) shall not exceed $100,000.



                                 Page 17 of 200


                                  EXHIBIT 10.2

                  SEITEL, INC. 1993 INCENTIVE STOCK OPTION PLAN
                Statement of Amendments Effective April 22, 1996



1.   The first sentence of Section V is hereby amended to read as follows:

          Subject to adjustment  as provided in Section VIII hereof,  a total of
     One Million One Hundred Fifty Thousand  (1,150,000)  shares of Common Stock
     of the Company (the "Shares") shall be subject to the Plan.



                                 Page 18 of 200


                                  EXHIBIT 10.3

                                  SEITEL, INC.
                             NON-EMPLOYEE DIRECTORS'
                           DEFERRED COMPENSATION PLAN

1.   Purpose. The purpose of the Non-Employee  Directors' Deferred  Compensation
     Plan (the "Plan") of Seitel,  Inc., a Delaware corporation (the "Company"),
     is to attract and retain highly qualified  persons to serve as non-employee
     Directors  of  the  Company  by  providing   such  Directors  with  greater
     flexibility  in the form and timing of receipt of fees for  services on the
     Board of  Directors,  and an  opportunity  to obtain a greater  proprietary
     interest in the Company's  success and progress  through receipt of fees in
     the form of options and  deferral  of fees in the form of Deferred  Shares,
     thereby aligning such Directors'  interests more closely with the interests
     of shareholders of the Company.

2.   Definitions.  In  addition  to terms  defined  elsewhere  in the Plan,  the
     following are defined terms under the Plan:

          (a) "Account" means the account established under Sections 8 and 9 for
     Participants,  which  may  include,  as  subaccounts,  a Cash  Account  and
     Deferred  Share  Account.  Such  Accounts,  and deferred  cash and Deferred
     Shares credited thereto,  are maintained  solely as bookkeeping  entries by
     the Company evidencing unfunded obligations of the Company.

          (b) "Agreement"  means a written  agreement  between the Company and a
     Participant setting forth the terms of an Option.

          (c) "Board" means the Board of Directors of the Company.

          (d) "Deferred Share" means a credit to a Participant's  Deferred Share
     Account  under  Section 9 which  represents  the right to receive one Share
     upon settlement of the Account.

          (e) "Director  Fees" means annual  director fees payable to a Director
     in his or her capacity as such for service on the Board.

          (f)  "Exchange  Act" means the  Securities  Exchange  Act of 1934,  as
     amended.  References  to any  provision of the  Exchange Act include  rules
     thereunder and successor provisions and rules thereto.

          (g) "Fair Market  Value" of a Share means,  as of any given date,  the
     closing  sales price of a Share  reported in the table  entitled  "New York
     Stock Exchange Composite Transactions" contained in The Wall Street Journal
     (or an  equivalent  successor  table) for such date or, if no such  closing
     sales price was  reported  for such date,  for the most recent  trading day
     prior to such date for which a closing sales price was reported.

          (h) "Option" means the right, granted to a Participant under Section 7
     in payment of Director  Fees,  to purchase a specified  number of Shares at
     the specified exercise price for a specified period of time under the Plan.
     All Options will be non-qualified stock options.

          (i)  "Option  Value"  means the value of an Option as of a given  date
     determined in accordance with the  Black-Scholes  option valuation model or
     such  other  recognized  option  valuation  model  used by the  Company  in
     preparing  footnotes  to  the  Company's  financial  statements.  For  this
     purpose,   the  applicable   option  valuation  model  shall  be  based  on
     assumptions  consistent with those then used in preparing  footnotes to the
     Company's  financial  statements in conformity  with Statement of Financial
     Accounting Standards No. 123.

          (j)  "Participant"  means a person  who has been  granted an Option in
     payment of  Director  Fees which  remains  outstanding,  who has amounts of
     deferred cash or Deferred Shares credited to his or her Account, or who has
     elected to be granted  Options  in  payment  of  Director  Fees or to defer
     payment of Director  Fees in the form of deferred  cash or Deferred  Shares
     under the Plan.

                                 Page 19 of 200
<PAGE>


          (k) "Plan  Year"  means,  with  respect to a  Participant,  the period
     commencing at the time of election of the Director at an annual  meeting of
     shareholders  (or the  election of a class of Directors if the Company then
     has a classified Board of Directors), or the Director's initial appointment
     to the Board if not at an annual  meeting of  shareholders,  and continuing
     until the next annual meeting of shareholders.

          (l) "Rule 16b-3" means Rule 16b-3,  as from time to time in effect and
     applicable to the Plan and Participants,  promulgated by the Securities and
     Exchange Commission under Section 16 of the Exchange Act.

          (m)  "Share"  means a share of Common  Stock,  $.01 par value,  of the
     Company and such other  securities as may be substituted  for such Share or
     such other securities pursuant to Section 11.

          (n)  "Valuation  Date" means the last  business day of a Plan Year and
     the last business day preceding a date on which a  distribution  is made in
     settlement of a Participant's Account.

3.   Shares  Available  Under the Plan. The total number of Shares  reserved and
     available for issuance  under the Plan is 30,000,  subject to adjustment as
     provided in Section 11. Such Shares may be authorized but unissued  Shares,
     treasury  Shares,  or Shares  acquired in the market for the account of the
     Participant.  For purposes of the Plan,  Shares that may be purchased  upon
     exercise of an Option or distributed in settlement of Deferred  Shares will
     not be  considered  to be  available  after such Option has been granted or
     Deferred Share credited, except for purposes of issuance in connection with
     such Option or Deferred Share; provided, however, that if an Option expires
     for any reason without having been exercised in full, the Shares subject to
     the unexercised portion of such Option will again be available for issuance
     under the Plan.

4.   Administration  of the Plan.  The Plan will be  administered  by the Board;
     provided,  however,  that any action by the Board relating to the Plan will
     be taken only if, in addition to any other  required  vote,  such action is
     approved by the affirmative vote of a majority of the Directors who are not
     then eligible to participate  in the Plan.  Subject to the direction of the
     Board,  bookkeeping and other ministerial functions under the Plan shall be
     performed by the Secretary and the Chief Accounting Officer of the Company.

5.   Eligibility. Each non-employee Director of the Company who is paid Director
     Fees for service on the Board may  participate in the Plan. No person other
     than those  specified in this Section 5 will be eligible to  participate in
     the Plan.

6.   Elections  Relating to  Participation.  Each Director of the Company who is
     eligible under Section 5 may elect,  in accordance  with this Section 6, to
     be paid  Director  Fees in the form of Options  under Section 7 or to defer
     receipt of Director Fees in the form of deferred cash under Section 8 or in
     the form of Deferred Shares under Section 9.

          (a) Time of Filing of  Elections;  Irrevocability.  A  Director  shall
     elect to  participate  and the  terms of such  participation  by  filing an
     election with the Secretary of the Company prior to the beginning of a Plan
     Year  (which   generally   will  begin  at  each  annual   meeting  of  the
     shareholders)  or at such earlier time as may be specified by the Secretary
     in order to ensure  compliance  with Rule 16b-3.  Elections shall be deemed
     continuing,  and therefore  applicable to Plan Years after the initial Plan
     Year,  until the  election  is  modified  or  revoked  by the  Participant.
     Elections other than those subject to Section 6(d) shall become irrevocable
     at the commencement of the Plan Year to which an election  relates,  unless
     the  Secretary  specifies an earlier time at which  elections  shall become
     irrevocable  in order to  ensure  compliance  with  Rule  16b-3.  Elections
     relating to the time of  settlement  of a Cash  Account or  Deferred  Share
     Account  shall become  irrevocable  at the time  specified in Section 6(d).
     Elections may be modified or revoked by filing a new election  prior to the
     time the  election to be modified  or revoked has become  irrevocable.  The
     latest  election  filed  with the  Secretary  shall be deemed to revoke all

                                 Page 20 of 200
<PAGE>

     prior inconsistent elections that remain revocable at the time of filing of
     the latest  election.  The Secretary will notify eligible  Directors of any
     date prior to the  commencement of a Plan Year by which Directors must make
     elections  or upon which  elections  will  become  irrevocable  in order to
     ensure compliance with Rule 16b-3.

          (b) Matters to be Elected.  A  Director's  election  must  specify the
     following:

               (i) With respect to Director  Fees,  the percentage to be paid in
          the form of Options under Section 7, the percentage to be deferred and
          credited to the  Participant's  Cash Account  under Section 8, and the
          percentage to be deferred and credited to the  Participant's  Deferred
          Share Account under  Section 9. The sum of such  percentages  must not
          exceed  100%;  if such sum is less than 100%,  the balance of Director
          Fees  will  be  paid  in  accordance   with  the   Company's   regular
          non-employee Director compensation policies.

               (ii) In the case of a deferral  under  Section 8 or 9, the period
          or periods during which settlement of the  Participant's  Cash Account
          or Deferred  Share Account will be deferred,  subject to Section 6(d),
          and  whether  distribution  will  be  in  a  lump  sum  or  in  annual
          installments;  provided,  however, that not more than ten installments
          may be elected,  and any  installment  distributions  must commence no
          later than the first  business day of the year  following  the year in
          which the Participant ceases to serve as a Director. An election as to
          the period or periods in which such  settlement  will be deferred  may
          relate to a given Plan Account or Deferred Share Account in respect of
          such Plan Year and to any additional  amounts  credited as interest or
          dividend  equivalents in respect of such originally  credited  amounts
          and previously credited amounts.

          (c)  Form of  Election.  Elections  under  the  Plan  shall be made in
     writing on such form or forms as may be specified  from time to time by the
     Secretary.

          (d) Modifying  the Time of  Settlement.  A  Participant  may modify an
     election  as to the  time at which a  Participant's  Cash  Account  will be
     settled  under  Section 8 or Deferred  Share  Account will be settled under
     Section 9 at any time  prior to the  earlier  of (i) the  calendar  year in
     which a lump sum  settlement  will  occur  or the  first  installment  will
     commence or (ii) the time the Participant  ceases to serve as a Director of
     the  Company,  except  that such  modification  may only extend the date of
     settlement to a date later than the  previously  elected  settlement  date.
     Such  modification  shall  be  made  by  filing  a new  election  with  the
     Secretary. The foregoing  notwithstanding,  the Secretary may disapprove or
     limit  elections  under  this  Section  6(d) in  order to  ensure  that the
     Participant will not be deemed to have constructively received compensation
     in respect of the Participant's Account prior to settlement.

          (e) Delayed  Effectiveness  of  Elections in Order to Comply with Rule
     16b-3. Other provisions of this Section 6  notwithstanding,  if any payment
     of  Director  Fees in the form of Options  under  Section 7 or  deferral of
     receipt of Director  Fees in the form of Deferred  Shares  under  Section 9
     would occur (i) less than six months after the Participant's election which
     would result in such payment or deferral became irrevocable, (ii) at a time
     when the Company's  employee benefit plans are being operated in conformity
     with Rule 16b-3 as in effect on and after May 1, 1991,  and (iii) at a time
     that  Rule   16b-3   imposes  a   requirement   with   participant-director
     transactions occur at least six months after the participant's making of an
     irrevocable  election  in order for such  transactions  to be  exempt  from
     Section 16(b)  liability,  then any Director Fees otherwise  payable within
     six months after such election became  irrevocable shall instead accrue and
     be payable  at the date that is six months and one day after such  election
     became irrevocable.

          (f) No  Reallocation  of  Accounts.  Amounts  credited  as  cash  to a
     Participant's  Cash  Account  may not be  reallocated  or  switched  to the
     Participant's   Deferred  Share  Account,   and  amounts  credited  to  the
     Participant's  Deferred Share Account may not be reallocated or switched to
     the Participant's Cash Account.

          (g) Cessation of Service as a Director. If any Director Fees otherwise
     subject to an election  would be paid to a Participant  after he or she has
     ceased to serve as a Director,  such  payment  shall not be subject to such
     election,  but  shall  instead  be paid in  accordance  with the  Company's
     regular non-employee Director compensation policies.

                                 Page 21 of 200
<PAGE>


7.   Options  Granted in Payment of Director Fees. A Participant who has elected
     to be paid a specified amount of Director Fees in the form of Options shall
     be granted, at the close of business on the day the Participant's Plan Year
     commences   (usually   the  day  of  the   Company's   annual   meeting  of
     shareholders),  an Option to purchase the number of whole Shares determined
     by dividing the specified  amount of Director Fees (as then in effect) that
     would be  payable  for the full  Plan Year by the  Option  Value as of that
     date.  The Fair Market Value of any  fractional  share  resulting  from the
     foregoing calculation will be paid in cash to the Participant.

          (a) Exercise Price. The exercise price per Share  purchasable under an
     Option  will be equal to 100% of the  Fair  Market  Value of a Share on the
     date of grant of the Option.

          (b) Option  Term.  Each Option will expire ten years after the date of
     grant;  provided,  however,  that any  portion of an Option that is not yet
     exercisable  at the date a  Participant  ceases to serve as a Director will
     expire at the date such service ceases.

          (c)  Exercisability.  Each Option will become exercisable as to 25% of
     the underlying  shares on the last day of each calendar  quarter  following
     the date of grant;  provided,  however,  that any Option  that is not fully
     exercisable  at the close of  business  on the last day of the Plan Year in
     which it was granted shall become fully exercisable on such date.

          (d) Method of Exercise.  Each Option may be exercised,  in whole or in
     part, at such time as it has become exercisable and prior to its expiration
     by giving written notice of exercise to the Secretary specifying the Option
     to be exercised and the number of shares to be purchased,  and  accompanied
     by payment in full of the exercise price in cash (including by check) or by
     surrender  of Shares  (other  than  Shares  acquired  from the  Company  by
     exercise  of an option less than six months  before the date of  surrender)
     having a Fair Market  Value at the time of exercise  equal to the  exercise
     price, or a combination of a cash payment and surrender of such Shares.

          (e)  Changes in Fees.  If the  amount of  Director  Fees is  increased
     during a Plan Year,  the  increase in such fees may not be paid in the form
     of Options.

8.   Deferral of Director  Fees in the Form of Deferred  Cash.  If a Participant
     has elected to defer receipt of a specified  amount of Director Fees in the
     form of deferred  cash, an amount equal to such  specified  amount shall be
     credited to the  Participant's  Cash  Account as of the date such  Director
     Fees  otherwise  would have been  payable to the  Participant  but for such
     election  to defer.  As of the close of business  on each  Valuation  Date,
     interest  shall be credited to such Cash  Account in an amount equal to the
     average daily balance in such Cash Account  since the last  Valuation  Date
     multiplied  by the prime  interest  rate as  published  in The Wall  Street
     Journal and effective on the date of the last  preceding  annual meeting of
     shareholders of the Company.

9.   Deferral of Director Fees in the Form of Deferred Shares.  If a Participant
     has elected to defer receipt of a specified  amount of Director Fees in the
     form of Deferred  Shares,  a number of Deferred Shares shall be credited to
     the Participant's  Deferred Share Account,  at the close of business on the
     day the  Participant's  Plan Year commences,  equal to the number of Shares
     having an aggregate  Fair Market Value on such date equal to such specified
     amount. Such credit of Deferred Shares to the Participant's  Deferred Share
     Account will  initially be unvested  and subject to  forfeiture,  and shall
     vest and become  nonforfeitable as to 25% of such number of Deferred Shares
     on the last day of each calendar quarter following the date of such credit,
     except if all such shares have not become fully vested but the Director has
     served through the end of the applicable Plan Year, the full number of such
     Deferred Shares will become fully vested and  nonforfeitable.  Any Deferred
     Shares credited to a Participant's Deferred Share Account that are unvested
     at the time a Director  ceases to serve as such will be  forfeited  at that
     time, regardless of the reason for the Director's  termination.  The amount
     of Deferred Shares credited to a Participant's Deferred Share Account shall
     include fractional Shares calculated to at least three decimal places.

                                 Page 22 of 200
<PAGE>


          (a) Crediting of Dividend  Equivalents - Cash and Non-Share Dividends.
     If the Company declares and pays a dividend in the form of cash or property
     other  than  Shares in  respect  of  Shares,  then a number  of  additional
     Deferred  Shares shall be credited to the Deferred  Share Account as of the
     payment date for such dividend  equal to (i) the number of Deferred  Shares
     credited  to  such  Account  as of  the  record  date  for  such  dividend,
     multiplied  by (ii) the  amount of cash plus the Fair  Market  Value of any
     property  other than  Shares  actually  paid as a dividend on each Share at
     such  payment  date,  divided by (iii) the Fair Market  Value of a Share at
     such payment date.

          (b) Crediting of Dividend Equivalents - Share Dividends and Splits. If
     the Company  declares and pays a dividend in the form of additional  Shares
     payable  in respect of Shares,  or there  occurs a forward  stock  split of
     Shares,  then a number of additional  Deferred  Shares shall be credited to
     the  Participant's  Deferred  Share Account as of the payment date for such
     dividend or forward stock split equal to (i) the number of Deferred  Shares
     credited to such  Account as of the record date for such  dividend or split
     multiplied  by (ii) the  number of  additional  Shares  actually  paid as a
     dividend or issued in such split in respect of each Share.

10.  Settlement of Accounts.  The Company will settle a Participant's Account by
     making  one  or  more  distributions  to  the  Participant  (or  his or her
     designated beneficiary, upon the Participant's death) at the time or times,
     in a lump sum or installments,  as specified in the Participant's  election
     filed in accordance with Section 6; provided,  however,  that Accounts will
     be settled  at times  earlier  than those  specified  in such  election  in
     accordance with Sections 10(b), 10(c), and 11.

          (a) Form of Distribution.  Distributions in respect of a Participant's
     Cash  Account  shall be made only in cash.  Distributions  in  respect of a
     Participant's Deferred Share Account shall be made only in Shares, together
     with cash in lieu of any  fractional  Share  remaining  at a time that less
     than one whole  Deferred  Share is credited to such Deferred Share Account.
     Shares may be delivered in certificate form to a Participant (or his or her
     designated  beneficiary) or to a nominee for the account of the Participant
     (or his or her  designated  beneficiary),  or in such  other  manner as the
     Secretary may determine.

          (b) Termination of Service as a Director; Death.

               (i)  Cessation  of  Service  Other  than  Due  to  Death.   If  a
          Participant ceases to serve as a Director due to any reason other than
          death,  the  Company  shall  make  distributions  in  respect  of  the
          Participant's   Account  to  such   Participant   in  a  lump  sum  or
          installments,  as previously  elected by the Participant,  except that
          installment  payments shall commence not later than the first business
          day of the year following the year in which the Participant  ceases to
          serve as a Director.

               (ii) Death. If a Participant ceases to serve as a Director due to
          death or dies prior to  distribution  of all  amounts  from his or her
          Account,  the Company shall make a single lump sum distribution to the
          beneficiary  designated by such  Participant in his or her most recent
          beneficiary  designation form filed with the Secretary. If there is no
          beneficiary  designation on file with the Secretary at the time of the
          Participant's  death  or no  surviving  designated  beneficiary,  such
          distributions  shall be made to the executor or  administrator  of the
          Director's  estate.  Any  such  distribution  shall be made as soon as
          practicable following notification to the Company of the Participant's
          death.

          (c)  Financial  Hardship.  Other  provisions  notwithstanding,  at the
     written  request of a Participant or his or her legal  representative,  the
     Board, in its sole discretion,  upon a finding that continued deferral will
     result in financial  hardship to the  Participant,  may  authorize  (i) the
     distribution  of all or a  part  of a  Participant's  Account  in a  single
     installment   or  (ii)  the   acceleration   of  payment  of  any  multiple
     installments thereof.

11.  Adjustment Provisions.  In the event any recapitalization,  reorganization,
     merger,  consolidation,  spin-off,  combination,  repurchase,  exchange  of
     Shares or other  securities of the Company,  stock split or reverse  split,

                                 Page 23 of 200
<PAGE>
     extraordinary  dividend  (whether  in the  form of cash,  Shares,  or other
     property), liquidation, dissolution, or other similar corporate transaction
     or event affects the Shares such that an adjustment is appropriate in order
     to prevent  dilution or  enlargement  of a  Participant's  rights under the
     Plan, then an adjustment  shall be made, in a manner that is  proportionate
     to the change to the Shares and otherwise equitable,  in (i) the number and
     kind of Shares remaining  reserved and available for issuance under Section
     3, (ii) the number and kind of Shares issuable upon exercise of outstanding
     Options,  and the  exercise  price  per  Share  thereof  (provided  that no
     fractional  Shares will be issued upon  exercise of any Option),  and (iii)
     the  number and kind of Shares to be issued  upon  settlement  of  Deferred
     Shares  under  Section 9. Upon the  effective  date of the  dissolution  or
     liquidation  of  the  Company,   or  of  a   reorganization,   merger,   or
     consolidation  of the Company with one or more other  corporations in which
     the  Company  is not  the  surviving  corporation,  or of the  transfer  of
     substantially  all of the  assets  or  shares  of the  Company  to  another
     corporation,  the  Plan  shall  terminate  and all  distributions  shall be
     completed  five  business  days  before the  scheduled  completion  of such
     corporate event unless provision is made in writing in connection with such
     corporate  event for the  continuance of the Plan and for the assumption of
     Accounts  maintained under the Plan immediately  prior to the effectiveness
     of such corporate event.

12.  Changes to the Plan. The Board may amend, alter, suspend,  discontinue,  or
     terminate  the Plan without the consent of  shareholders  or  Participants,
     except that any amendment or alteration  will be subject to the approval of
     the  Company's  shareholders  at or  before  the  next  annual  meeting  of
     shareholders  for which  the  record  date is after the date of such  Board
     action if such shareholder approval is required by any federal or state law
     or  regulation  or the rules of any stock  exchange or automated  quotation
     system as then in effect,  and the Board may otherwise  determine to submit
     other  such  amendments  or  alterations  to  shareholders   for  approval;
     provided, however, that, without the consent of an affected Participant, no
     such  action may  materially  impair the  rights of such  Participant  with
     respect to any previously granted Option or any previous payment of fees in
     the form of deferred cash or Deferred Shares;  and, provided further,  that
     any  provisions of this Plan relating to the amount,  price,  and timing of
     awards  under  this Plan  shall  not be  amended  more than once  every six
     months,  other than to comport with changes in the Internal  Revenue  Code,
     the Employee  Retirement Income Security Act, or the rules  thereunder,  if
     such amendment would not comply with the requirements of Rule 16b-3.

13.  General Provisions.

          (a) Agreements;  Account  Statements.  Options,  Deferred Shares,  and
     other rights or  obligations  under the Plan may be evidenced by Agreements
     or  other   documents   executed  by  the   Company  and  the   Participant
     incorporating the terms and conditions set forth in the Plan, together with
     such other terms and  conditions  not  inconsistent  with the Plan,  as the
     Secretary may from time to time approve.  The Secretary  shall provide each
     Participant,  not less  frequently than once per Plan Year, with an account
     statement  reflecting Account balances under the Plan, Account transactions
     during the period covered by the statement,  and such other  information as
     the Secretary may deem relevant.

          (b)  Compliance  with Laws and  Obligations.  The Company  will not be
     obligated to issue or deliver  Shares in  connection  with any Option or in
     settlement of Deferred Shares in a transaction  subject to the registration
     requirements  of the  Securities  Act of 1933,  as  amended,  or any  other
     federal  or  state  securities  law,  any  requirement  under  any  listing
     agreement between the Company and any stock exchange or automated quotation
     system,  or any other law,  regulation,  or  contractual  obligation of the
     Company,  until the Company is satisfied that such laws,  regulations,  and
     other  obligations  of  the  Company  have  been  complied  with  in  full.
     Certificates  representing  Shares issued under the Plan will be subject to
     such stop-transfer orders and other restrictions as may be applicable under
     such laws, regulations, and other obligations of the Company, including any
     requirement that a legend or legends be placed thereon.

          (c) Limitations on Transferability.  Options, Deferred Shares, and any
     other  rights  under the Plan  will not be  transferable  by a  Participant
     except by will or the laws of descent and distribution,  or to a designated
     beneficiary  in the event of a  Participant's  death,  and Options  will be
     exercisable during the lifetime of the Participant only by such Participant
     or his or her guardian or legal  representative;  provided,  however,  that
     Options,  Deferred Shares,  and related rights may be transferred to one or
     more transferees during the lifetime of the Participant, but only if and to
     the extent then permissible  without loss of the exemption under Rule 16b-3

                                 Page 24 of 200
<PAGE>

     and  consistent  with the  registration  of the  offer  and sale of  Shares
     related thereto on Form S-8, Form S-3, or such other  registration  form of
     the Securities  and Exchange  Commission as may then be filed and effective
     with  respect  to the  Plan.  The  Company  may rely  upon the  beneficiary
     designation last filed in accordance with this Section 13(c).

          (d)  Nonforfeitability.  The interest of each  Participant in deferred
     cash or vested  Deferred Shares credited to his or her Account at all times
     will be nonforfeitable.

          (e) Compliance  with Rule 16b-3.  It is the intent of the Company that
     this Plan comply in all respects with  applicable  provisions of Rule 16b-3
     in connection with any grant of Options or deferral in the form of Deferred
     Shares. Accordingly, if any provision of this Plan or an Agreement does not
     comply with the  requirements  of Rule 16b-3 as then applicable to any such
     transaction,  or would preclude a Director of the Company from being deemed
     a  "disinterested  person" under then applicable  provisions of Rule 16b-3,
     such provision will be construed or deemed amended to the extent  necessary
     so that such  Participant  shall avoid  liability  under  Section 16(b) and
     ensure  that  the  Director's   status  as  a  "disinterested   person"  is
     unaffected.

          (f) Continued Service as an Employee. If a Participant ceases to serve
     as a Director and,  immediately  thereafter,  is employed by the Company or
     any subsidiary,  then such Participant will not be deemed to have ceased to
     serve as a Director or as Chairman or as a member of a Board  committee  at
     that  time,  and his or her  continued  employment  by the  Company  or any
     subsidiary will be deemed to be continued service as a Director or Chairman
     or a member of a Board  committee;  provided,  however,  that  such  former
     Director will not be deemed to be a  non-employee  Director for purposes of
     Section 5.

          (g) No Right to Continue as a Director.  Nothing contained in the Plan
     or any Agreement will confer upon any  Participant any right to continue to
     serve as a Director of the Company or to be nominated for  re-election as a
     Director.

          (h) No Shareholder Rights Conferred.  Nothing contained in the Plan or
     any  Agreement  will confer upon any  Participant  (or any person  claiming
     rights by or  through a  Participant)  any rights of a  shareholder  of the
     Company unless and until Shares are in fact issued to such  Participant (or
     person) or, in the case of an Option,  such Option is validly  exercised in
     accordance with Section 7.

          (i) Unfunded Status of Accounts. The Plan is intended to constitute an
     "unfunded"  plan to  provide  deferred  compensation.  With  respect to any
     rights  to  payment  of a  Participant  under his or her  Account,  nothing
     contained in the Plan or any Agreement shall give any such  Participant any
     rights that are greater than those of a general creditor of the Company.

          (j)  Nonexclusivity  of the Plan.  Neither the adoption of the Plan by
     the  Board  nor its  submission  to the  shareholders  of the  Company  for
     approval shall be construed as creating any limitations on the power of the
     Board to adopt such other compensatory arrangements for Directors as it may
     deem desirable.

          (k) Governing Law. The validity,  construction, and effect of the Plan
     and any Agreement  will be  determined  in accordance  with the laws of the
     State of Delaware and applicable federal law.

14.  Shareholder Approval,  Effective Date, and Plan Termination.  The Plan will
     be  effective  as of the opening of business of the  Company's  1996 Annual
     Meeting of  Shareholders  if, and only if, the  shareholders of the Company
     approve the Plan at such  Annual  Meeting by the  affirmative  votes of the
     holders of a majority of Shares present,  or  represented,  and entitled to
     vote on the matter at such Annual  Meeting.  Unless  earlier  terminated by
     action of the Board or in accordance  with Section 11, the Plan will remain
     in effect until such time as no Shares remain  available for issuance under
     the Plan  and the  Company  and  Participants  have no  further  rights  or
     obligations under the Plan.

Adopted By the Board of Directors effective May 22, 1996.

                                 Page 25 of 200


                                  EXHIBIT 10.4

                           LOAN AND SECURITY AGREEMENT
                                     between
                            SEITEL GEOPHYSICAL, INC.,
                                   as Debtor,
                                       and
               NATIONSBANC LEASING CORPORATION OF NORTH CAROLINA,
                                as Secured Party,
                            dated as of July 9, 1996

         THIS LOAN AND SECURITY  AGREEMENT dated as of July 9, 1996 (as amended,
modified,  supplemented,  restated  and/or  replaced  from  time  to  time,  the
"Agreement"),   between  SEITEL  GEOPHYSICAL,   INC.,  a  Delaware   corporation
("Debtor"),  and  NATIONSBANC  LEASING  CORPORATION OF NORTH  CAROLINA,  a North
Carolina corporation ("Secured Party").

PRELIMINARY STATEMENTS:

         (1) Debtor has requested that Secured Party make loans in the aggregate
principal  amount  of  $7,264,211.13  to  Debtor  pursuant  to the  terms of the
Agreement as evidenced by  promissory  notes in such amount to finance  Debtor's
acquisition of the Equipment (hereinafter defined).

         (2)  Secured  Party  has  agreed  to make the  Loans to  Debtor  on the
condition, among other things, that Debtor shall have executed and delivered the
Notes  (hereinafter  defined)  payable to Secured  Party,  this  Agreement,  any
required amendment or supplement hereto Granting  (hereinafter  defined) Secured
Party  a  first  priority  security  interest  in  the  Collateral  (hereinafter
defined), related UCC-1 financing statements and other filings reasonably deemed
necessary or prudent by Secured Party to perfect such security interest.

         NOW, THEREFORE, in consideration of the premises and for other good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged, Debtor and Secured Party hereby agree as follows:

                                    ARTICLE I

             DEFINED TERMS; CREDIT FACILITIES; CONDITIONS PRECEDENT

         SECTION 1.1  Definitions.  When used in this  Agreement,  the following
capitalized terms shall have the following meanings (such meanings to be equally
applicable to both the singular and plural forms of the terms defined):

         "Affiliate" means a Person (i) which directly or indirectly through one
or more intermediaries controls, or is controlled by, or is under common control
with, Debtor;  (ii) which beneficially owns or holds 10% or more of any class of
the voting stock of Debtor, or (iii) of which 10% or more of the voting stock is

                                 Page 26 of 200
<PAGE>

beneficially owned or held by Debtor or a Subsidiary.

          "Assigned  Agreements"  has the  meaning  set forth in Section  2.1(b)
hereof.

         "Beneficiary" has the meaning set forth in Section 6.1 hereof.

         "Bills of Sale" means each warranty bill of sale in favor of the Debtor
duly executed by the Seller of the Equipment.

         "Break-Funding Costs" means, in the case of any voluntary prepayment of
all or any portion of the unamortized balance of the Loans, an amount reasonably
determined by Secured Party as shall compensate Secured Party as a result of the
inability of Secured Party in its  reasonable  discretion to redeploy the amount
so prepaid at an interest rate equal to or greater than the interest rate on the
applicable  Loan  and for a term  equal  to the  remaining  average  life of the
applicable Loan.

         "Business  Day"  means  any  day  other  than  a day on  which  banking
institutions  in the states of North  Carolina  or  Georgia  are  authorized  or
required by law to close.

         "Closing Date" means July 12, 1996.

         "Collateral" shall have the meaning set forth in Section 2.1 hereof.

         "Default"  shall mean an event or  occurrence  which upon the giving of
notice and/or the lapse of time shall constitute an Event of Default.

         "Equipment"  means  each item of  marine-based  or  land-based  seismic
recordation  equipment  as more  specifically  described  in  Exhibit A attached
hereto and made a part hereof.

         "Equipment  Cost"  means,  with  respect to any item of  Equipment,  an
amount  equal to the sum of (a) the total  cost paid by Debtor  for such item of
Equipment plus (b) all excise, sales and use taxes and registration fees paid by
Debtor on or with respect to the acquisition of such item of Equipment,  both as
evidenced by  invoices,  appraisals  and/or bills of sale in form and  substance
reasonably satisfactory to Secured Party.

         "ERISA" has the meaning set forth in Section 3.1(t) hereof.

         "Event of Default" has the meaning set forth in Section 5.1 hereof.

         "Event of Loss" with respect to an item of  Equipment  means any of the
following events: (i) loss of any item of Equipment or of the use thereof due to

                                 Page 27 of 200
<PAGE>

theft or disappearance prior to the expiration or termination of this Agreement,
or the  non-existence  of any item of Equipment at the expiration or termination
of this Agreement,  (ii) destruction,  damage beyond repair, or rendition of any
item of Equipment  permanently  unfit for normal use for any reason  whatsoever,
(iii)  any  damage  to any  item of  Equipment  which  results  in an  insurance
settlement  with respect to such item of Equipment on the basis of a total loss,
or (iv) the condemnation,  confiscation, seizure, or requisition of use or title
to any item of  Equipment  by any  governmental  authority  under  the  power of
eminent domain or otherwise.

          "Event of Loss Payment  Date" has the meaning set forth in Section 4.3
hereof.

         "Grant"  means to  grant,  bargain,  sell,  warrant,  remise,  release,
convey, assign, transfer, mortgage, pledge, deposit, set over, confirm or create
a security  interest  under the North  Carolina UCC. A grant with respect to any
instrument,  document or agreement shall include all rights,  powers and options
(but  none of the  obligations)  of the  granting  party  thereunder,  including
without  limitation  the right to generally do anything which the granting party
then is or thereafter may be entitled to do thereunder or with respect thereto.

         "Guarantor" means Seitel, Inc., a Delaware corporation.

         "Guaranty" means the Guaranty Agreement dated as of the date hereof, as
such may be amended, modified, supplemented,  restated and/or replaced from time
to time, executed by Guarantor for the benefit of Secured Party.

         "Installment  Payment  Date" means the last day of each monthly  period
with respect to Term Loan A and Term Loan B.

         "Lien"  means any lien,  claim,  charge,  security  interest,  mortgage
and/or other encumbrance.

         "Loans" means each of Term Loan A and Term Loan B.

          "North  Carolina  UCC" or  "UCC"  means  the  North  Carolina  Uniform
Commercial Code, N.C. Gen. Stat. Chapter 25, Articles 1-11, as now in effect and
as hereafter amended from time to time.

         "Notes" means each of Secured Term Note A and Secured Term Note B.

         "Notice of Borrowing" means a notice of borrowing delivered pursuant to
Section 1.3(b)(i) substantially in the form of Schedule 1.3(b)(i) hereto.

         "PBGC" has the meaning set forth in Section 3.1(t) hereof.

         "Permitted  Contest"  means any contest by Debtor  with  respect to any

                                 Page 28 of 200
<PAGE>

Lien,  tax or  imposition  referred to in Section 6.2 hereof,  so long as Debtor
shall contest,  in good faith and at its expense,  the existence,  the amount or
the validity thereof, the amount of the damages caused thereby, or the extent of
its liability  therefor,  by appropriate  Proceedings which do not result in (i)
the collection of, or other  realization upon, the tax,  assessment,  levy, fee,
rent or Lien so  contested,  (ii) the  sale,  forfeiture  or loss of any item of
Equipment or any material part thereof,  or (iii) any interference  with the use
of any item of Equipment or any material part thereof.

         "Permitted  Encumbrances",  with respect to the  Collateral,  means (i)
this Agreement and any assignment  permitted hereby, (ii) any Lien affecting the
Collateral for work or service performed or materials furnished securing amounts
which are not yet due and  payable  or which are not  otherwise  delinquent  and
(iii) any Lien which is the  subject of a  Permitted  Contest and (iv) any other
Lien incurred in the ordinary course of business which such Lien does not exceed
$50,000.

         "Permitted  Lease"  shall  mean a  lease  of all the  Equipment  or any
portion  thereof entered into between Debtor and a Permitted  Lessee;  provided,
that the following  conditions shall be met with respect to each such lease: (i)
Secured  Party shall have given its prior  written  consent to such lease;  (ii)
upon the effective date of such lease,  there shall exist no Default or Event of
Default  and no  Liens  on  any  of the  Collateral  other  than  the  Permitted
Encumbrances;  (iii) each such lease shall specify  explicitly as a condition to
the effectiveness of such lease that (A) Debtor shall remain fully obligated and
in  compliance  with the terms and  conditions  of this  Agreement  and (B) upon
Secured  Party's  delivery to the lessee of notice  specifying  that an Event of
Default has occurred and is continuing  and that the Secured Party has commenced
the  exercise  of  remedies  with  respect  to the  Equipment,  such  lease will
automatically terminate and be of no further force or effect and the lessee will
cause each item of  Equipment  then  subject to such  lease to be  delivered  to
Secured Party at a place to be designated by Secured Party. For purposes of this
definition,  the subleases  entered between Debtor,  as lessor,  and Seller,  as
lessee, with respect to the Equipment shall be considered a "Permitted Lease."

         "Permitted  Lessee" shall mean any Person which (i) is domiciled in the
United States, (ii) in Debtor's  reasonable opinion, is financially  responsible
and (iii) at the time Debtor  enters into such lease,  is not the subject of any
filing by or against such Person of a petition under any federal  bankruptcy law
or any federal law replacing or superseding such law or any state bankruptcy law
in which such Person is named as debtor. For purposes of this definition, Seller
shall be considered a "Permitted Lessee."

         "Person"  means an individual  or a  corporation,  partnership,  trust,

                                 Page 29 of 200
<PAGE>

association,  joint venture,  joint stock company,  firm or other  enterprise or
government   (or  a  political   subdivision   or  any  agency,   department  or
instrumentality thereof) or other entity of any kind.

         "Plan"  means  any  "employee  benefit  pension  plan" or other  "plan"
(including  a  "multiemployer  plan" as  defined  in  Section  3(37)  of  ERISA)
established or maintained,  as to which  contributions have been made, by Debtor
or any Affiliate for either of their  respective  employees and which is covered
by Title IV of ERISA or to which  Section 412 of the  Internal  Revenue  Code of
1986, as amended applies.

          "Proceeding" means any suit in equity, action at law or other judicial
or administrative proceeding.

         "Replacement Equipment" means an item (i) of comparable make, model and
manufacture  as the item of Equipment with respect to which an Event of Loss has
occurred,  (ii)  selected  by Debtor and  consented  to by Secured  Party,  such
consent not to be unreasonably  withheld or delayed,  (iii) owned by Debtor free
and clear of all Liens and other encumbrances other than Permitted  Encumbrances
and (iv) having a value, utility and useful life at least equal to, and being in
as good operating  condition as, the item of Equipment with respect to which the
Event of Loss occurred, assuming such item of Equipment was in the condition and
repair required by the terms hereof  immediately  prior to the occurrence of the
Event of Loss.

         "Secured Obligations" has the meaning set forth in Section 2.2 hereof.

         "Secured  Party"  means  NationsBanc   Leasing   Corporation  of  North
Carolina, a North Carolina corporation, and its successors and assigns.

         "Security  Instrument"  means  each of this  Agreement,  and any  other
instrument, document, financing statement or agreement with respect to which any
right or  interest  in or with  respect to the  Collateral  has been  Granted to
Secured Party or has been recorded with the appropriate filing office.

         "Secured Term Note A" means the promissory  note of the Debtor in favor
of the Secured Party dated the Closing Date  evidencing  Term Loan A as provided
pursuant to Section 1.3(a)(iii), as amended, modified,  supplemented,  extended,
renewed or replaced from time to time.

         "Secured Term Note B" means the promissory  note of the Debtor in favor
of the Secured Party dated the Closing Date  evidencing  Term Loan B as provided
pursuant to Section 1.3(b)(iii), as amended, modified,  supplemented,  extended,
renewed or replaced from time to time.

         "Seller"  means  Horizon  Exploration  Ltd.,  a company  organized  and
existing under the laws of England.

                                 Page 30 of 200
<PAGE>

         "Subsidiary"   means  any  corporation,   limited  liability   company,
partnership,  joint  venture,  trust or estate of which (i) more than 50% of the
outstanding  capital stock having  ordinary  voting power to elect a majority of
the board of directors of such corporation;  or (ii) the interest in the capital
or profits of such corporation,  limited liability company, partnership or joint
venture;  or (iii)  the  beneficial  interest  of such  trust or estate is owned
directly or indirectly by Guarantor and/or one of its Subsidiaries.

          "Taxes or Other  Impositions" has the meaning set forth in Section 6.2
hereof.
         "Term Loan A" means the term loan made  pursuant to the  provisions  of
Section 1.3(a).

          "Term Loan A Commitment"  has the meaning set forth in Section  1.3(a)
hereof.

         "Term Loan B" means the term loan made  pursuant to the  provisions  of
Section 1.3(b).

          "Term Loan B Commitment"  has the meaning set forth in Section  1.3(b)
hereof.

         "Term  Loan B Draw  Termination  Date"  has the  meaning  set  forth in
Section 1.3(b) hereof.

         "Termination  Value"  means,  with  respect  to any or all  item(s)  of
Equipment,  an amount equal to the  Equipment  Cost of such item(s) of Equipment
multiplied by the Termination  Value Percentage as of such  Installment  Payment
Date.

         "Termination  Value  Percentage" means the termination value percentage
as of each Installment Payment Date as set forth in Exhibit B hereto.

         SECTION 1.2 Other Terms.  Unless  otherwise  defined in this Agreement,
all terms defined in the North  Carolina UCC and used in this Agreement have the
meanings set forth in the North Carolina UCC.

         SECTION 1.3 Term Loans.

                  (a) Term Loan A. Subject to and upon the terms and  conditions
         and relying upon the  representations  and warranties herein set forth,
         the  Secured  Party  agrees to make a term loan  ("Term Loan A") to the
         Debtor on the Closing Date in the principal amount of FIVE MILLION NINE
         HUNDRED TWO THOUSAND THREE HUNDRED AND SEVENTY-TWO DOLLARS ($5,902,372)
         (the "Term Loan A Commitment") for the purposes  hereinafter set forth.
         Amounts repaid on Term Loan A may not be reborrowed.  The Secured Party

                                 Page 31 of 200
<PAGE>


         will make Term  Loan A  available  to the  Debtor  by  deposit  in U.S.
         dollars of immediately  available funds to the Debtor's  account at the
         offices of Compass Bank in Houston, Texas.

                           (i) Payment of Principal and Interest.  Principal and
                  interest  on Term  Loan A  shall  be  payable  in  sixty  (60)
                  consecutive  monthly  installments  on the  last  day of  each
                  monthly  period,  beginning  with the  first of such  dates to
                  occur after the Closing  Date.  Each  installment  shall be in
                  payments of principal  and interest  equal to 2.027639% of the
                  Term Loan A Commitment. Payments received on Term Loan A shall
                  be applied first to accrued  interest and then to principal in
                  inverse  order of  maturity.  In the event the actual  rate of
                  interest  exceeds the  assumed  rate,  additional  payments of
                  interest  will be made in the  amount of the  excess  thereof,
                  payable on demand.

                           (ii)  Interest.  Term Loan A shall bear interest at a
                  per  annum  rate  equal to  eight  percent  (8.0%);  provided,
                  however,  that upon the occurrence and during the continuation
                  of an Event of Default hereunder, the principal of and, to the
                  extent  permitted  by law,  interest  on Term Loan A hereunder
                  shall bear  interest,  payable  on demand,  at a rate equal to
                  2.0% per  annum in  excess  of the rate  otherwise  applicable
                  hereunder.

                           (iii)  Secured  Term  Note A.  Term  Loan A shall  be
                  evidenced by a duly executed  promissory note of the Debtor to
                  the  Secured  Party  dated  the  Closing  Date in an  original
                  principal  amount  equal to the  Term  Loan A  Commitment  and
                  substantially in the form of Schedule 1.3(a) hereto.

                  (b) Term Loan B. Subject to and upon the terms and  conditions
         and relying upon the  representations  and warranties herein set forth,
         the Secured  Party agrees to make two (2)  advances  ("Term Loan B") to
         the Debtor  from time to time from the  Closing  Date until  August 31,
         1996  (as  such  date  may be  extended  from  time to time in the sole
         discretion  of the Secured  Party,  (the "Term Loan B Draw  Termination
         Date")) in an  aggregate  principal  amount of up to ONE MILLION  THREE
         HUNDRED  SIXTY-ONE  THOUSAND EIGHT HUNDRED AND  THIRTY-NINE  AND 13/100
         DOLLARS ($1,361,839.13) (the "Term Loan B Commitment") for the purposes
         hereinafter  set  forth.  Amounts  repaid  on  Term  Loan B may  not be
         reborrowed.

                           (i) Term Loan B Advances.  So long as the  conditions
                  to advances have been  satisfied,  the Secured Party will make
                  Term Loan B advances  to the Debtor from time to time from the
                  Closing  Date to the Term  Loan B Draw  Termination  Date upon
                  submission of a Notice of Borrowing  substantially in the form


                                 Page 32 of 200
<PAGE>

                  of Schedule 1.3(b)(i) to the Secured Party on the Business Day
                  prior to the date of the requested  advance.  Each such notice
                  shall  specify (A) the date of the  requested  advance  (which
                  shall be a Business  Day),  (B) shall not exceed,  taking into
                  account  all  prior  Term  Loan B  advances,  the Term  Loan B
                  Commitment  and (C)  shall be  accompanied  by any  supporting
                  invoices and requisitions  relating to the requested  advance.
                  The  Secured  Party  shall  make  such  Term  Loan B  advances
                  available by deposit to the Debtor's  account at the office of
                  Compass Bank in Houston, Texas.

                           (ii) Payment of Principal and  Interest.  Term Loan B
                  shall  be  subject  to a  draw  period  during  which  accrued
                  interest  shall be payable  monthly in arrears on the last day
                  of each monthly period  beginning with the first of such dates
                  to occur after the  Closing  Date.  Interest  during such draw
                  period shall accrue at the daily  equivalent rate of eight and
                  six hundredths percent (8.06%) per annum for the actual number
                  of days elapsed  with respect to Term Loan B advances  made on
                  the Closing Date and throughout the draw period.  Beginning on
                  the last day of the first monthly period after the Term Loan B
                  Draw Termination Date, Debtor shall make payments of principal
                  and  interest on Term Loan B in  thirty-six  (36)  consecutive
                  monthly  installments  on the last day of each monthly period.
                  Each  installment  shall  be  in  payments  of  principal  and
                  interest  equal to  3.136405%  of the Term Loan B  Commitment.
                  Payments  received  on Term Loan B shall be  applied  first to
                  accrued  interest and then to  principal  in inverse  order of
                  maturity. In the event the actual rate of interest exceeds the
                  assumed rate,  additional payments of interest will be made in
                  the amount of the excess thereof, payable on demand.

                           (iii) Interest.  Term Loan B shall bear interest at a
                  per  annum  rate  equal to eight  and six  hundredths  percent
                  (8.06%);  provided,  however,  that  upon the  occurrence  and
                  during the continuation of an Event of Default hereunder,  the
                  principal of and, to the extent permitted by law,  interest on
                  Term Loan B hereunder shall bear interest,  payable on demand,
                  at a rate  equal  to 2.0%  per  annum  in  excess  of the rate
                  otherwise applicable hereunder.

                           (iv)  Secured  Term  Note B.  Term  Loan B  shall  be
                  evidenced by a duly executed  promissory note of the Debtor to
                  the  Secured  Party  dated  the  Closing  Date in an  original
                  principal  amount  equal to the  Term  Loan B  Commitment  and
                  substantially in the form of Schedule 1.3(b) hereto.

                  (c) Early Termination.  (i) On any Installment Payment Date on


                                 Page 33 of 200
<PAGE>

         or after the second  anniversary of the Closing Date,  Debtor may, upon
         sixty (60) days' prior written notice to Secured  Party,  terminate the
         Loans and this  Agreement.  Debtor  shall pay to  Secured  Party on the
         applicable  Installment  Payment  Date the sum of: (A) the  Termination
         Value as of such Installment  Payment Date, plus (B) any  Break-Funding
         Costs,  plus (C) any accrued but unpaid interest with respect to either
         Loan to the extent  the  Installment  Payment  Date for Term Loan A and
         Term  Loan B are not the same  date  each  month,  plus  (D) all  other
         obligations  owing under the Agreement on the  termination  date.  Upon
         receipt of the amounts set forth in (A)-(D) above,  Secured Party shall
         release its Lien on the Collateral.

                  (ii) On any  Installment  Payment  Date on or after the second
         anniversary  of the Closing  Date,  Debtor  may,  upon sixty (60) days'
         prior written notice to Secured Party, prepay a portion of the Loans in
         accordance with the terms hereof.  Debtor shall have the option to make
         up to  three  (3)  prepayments  in the  aggregate  on the  Loans,  each
         prepayment  in an amount not less than  $200,000.  Debtor  shall pay to
         Secured Party on the  applicable  Installment  Payment Date the sum of:
         (A) the prepayment amount,  plus (B) any Break-Funding  Costs, plus (C)
         any accrued but unpaid interest with respect to the prepayment. Amounts
         so  prepaid  under  this   subsection   (c)(ii)  shall  be  applied  to
         outstanding  obligations  owing under this  Agreement in the reasonable
         discretion of the Secured Party.

         SECTION 1.4  Conditions  Precedent.  The obligation of Secured Party to
make  any  Loan  advance  shall  be  subject  to the  following  conditions,  as
appropriate:

                  (a)  Conditions  to All  Advances on Closing  Date.  Each Loan
         advance on the Closing Date shall be subject to the delivery to Secured
         Party of the following  originally executed documents (unless otherwise
         noted) each in form and substance satisfactory to Secured Party and the
         satisfaction of the other conditions set forth herein:

                         (i) the Agreement;

                         (ii) the Notes;

                         (iii) the Guaranty;

                         (iv) evidence of payment (or evidence of exemption) of
                    any and all sales,  transfer,  use, documentation or similar
                    taxes  due  in  connection   with  the  acquisition  of  the
                    Equipment by Debtor;

                         (v)  a  secretarial   certificate   from  Debtor:   (A)
                    certifying  Debtor's articles of incorporation,  by-laws and


                                 Page 34 of 200
<PAGE>

                    resolutions,  with such resolutions  authorizing the overall
                    transaction and Debtor's execution, delivery and performance
                    of  this   Agreement   and  (B)   containing  an  incumbency
                    certification  of  Debtor  with the  name(s),  title(s)  and
                    specimen signature(s) of the person or persons authorized on
                    behalf of Debtor to execute this Agreement.

                         (vi) an officer's  certificate from Debtor: (A) stating
                    that  no  material   adverse  change  has  occurred  in  the
                    condition of Debtor  (financial or otherwise) since the date
                    of the last financial  statement of Guarantor which has been
                    delivered to Secured Party which would impair the ability of
                    Debtor  to  pay  and  perform  its  obligations  under  this
                    Agreement  and (B)  stating  that no  Default  or  Event  of
                    Default  shall have  occurred and be  continuing  as of such
                    date;

                         (vii) a secretarial  certificate  from  Guarantor:  (A)
                    certifying  Guarantor's  articles of incorporation,  by-laws
                    and  resolutions,  with  such  resolutions  authorizing  the
                    overall transaction and Guarantor's execution,  delivery and
                    performance of the Guaranty and (B) containing an incumbency
                    certification  of Guarantor  with the name(s),  title(s) and
                    specimen signature(s) of the person or persons authorized on
                    behalf of Guarantor to execute the Guaranty;

                         (viii) an officer's  certificate  from  Guarantor:  (A)
                    stating that no material  adverse change has occurred in the
                    condition of Guarantor  (financial or  otherwise)  since the
                    date of the last financial  statement of Guarantor which has
                    been  delivered  to Secured  Party  which  would  impair the
                    ability of  Guarantor  to pay and  perform  its  obligations
                    under the  Guaranty and (B) stating that no Default or Event
                    of Default  shall have occurred and be continuing as of such
                    date;

                         (ix) a  written  opinion  of  counsel  for  Debtor  and
                    Guarantor;

                         (x) copies of the Bills of Sale;

                         (xi) certificates of insurance evidencing the coverages
                    required hereunder;

                         (xii)  Uniform   Commercial   Code  filings  as  deemed
                    appropriate  by Secured  Party's  counsel  duly  executed by
                    Debtor and necessary third parties;


                                 Page 35 of 200
<PAGE>

                         (xiii) good standing certificates from the Secretary of
                    State of Debtor's  state of  incorporation  and the state of
                    Debtor's chief executive office; and

                         (xiv) good standing  certificates from the Secretary of
                    State of Guarantor's  state of incorporation and Guarantor's
                    chief executive office.

                         (xv) UCC,  tax and  judgment  lien  searches  as deemed
                    necessary or advisable by Secured Party;

                         (xvi) the  absence  on the date  hereof of any Liens on
                    the  Collateral,  other than any  Permitted  Encumbrance  in
                    favor of Secured Party; and

                         (xvii)  Secured  Party shall have  received  such other
                    documents,  certificates,  financing  statements  and  other
                    items, in form and substance  satisfactory to Secured Party,
                    as Secured Party may request.

                    (b) Term Loan B  Advances.  The  obligation  of the  Secured
               Party to make Term Loan B  advances  after  the  Closing  Date is
               subject to satisfaction of the following conditions:

                         (i)  delivery  to the  Secured  Party  of a  Notice  of
                    Borrowing;

                         (ii) no material adverse change in the condition of the
                    Debtor  (financial or otherwise)  shall have occurred  since
                    the Closing Date;

                         (iii) the  absence  on the date of such  advance of any
                    Default or Event of Default; and

                         (iv)  no  Lien  or  other   interest  shall  have  been
                    permitted   to  attach  to  the   Collateral   superior   or
                    subordinate  to the interest of the Secured Party under this
                    Agreement, except for Permitted Encumbrances.


                                   ARTICLE II

                                SECURITY INTEREST

         SECTION 2.1 Grant of Security Interest. Debtor hereby Grants to Secured
Party a first priority  security  interest in the following  (collectively,  the
items  described  in  subsections  (a)-(d)  may be  referred  to  herein  as the
"Collateral"):

               (a) All  right,  title and  interest  of the Debtor in and to the


                                 Page 36 of 200
<PAGE>

          Equipment  as the  same  is now and  will  hereafter  be  constituted,
          whether now owned by the Debtor or hereafter  acquired,  together with
          all accessories,  equipment,  parts and appurtenances  appertaining or
          attached to the Equipment whether now owned or hereafter acquired, and
          all  substitutions,   renewals  and  replacements  of  and  additions,
          improvements,  accessions and accumulations to the Equipment  together
          with all the rents, issues, income, profits and avails thereof.

               (b) All right, title, interest,  claims and demands of Debtor in,
          to and under the following (collectively the "Assigned Agreements"):

                    (i) the Bills of Sale;

                    (ii) the Permitted Leases; and

                    (iv) any and all other  contracts and agreements  (excluding
               this Agreement and any supplement or modification thereto and the
               Notes)  relating  to the  Equipment  or any  rights or  interests
               therein  to  which  Debtor  is now or may  hereafter  be a party,
               together   with  all  rights,   powers,   privileges,   licenses,
               easements,  options  and  other  benefits  of Debtor  under  each
               thereof,  including  without  limitation  the  right  to make all
               waivers and agreements, to give and receive all notices and other
               instruments  or  communications,  to take  such  action  upon the
               occurrence of a default  thereunder,  including the commencement,
               conduct  and  consummation  of  legal,  administrative  or  other
               Proceedings,  as shall be permitted  thereby or by law, and to do
               any and all other things which Debtor is or may be entitled to do
               thereunder.

               (c) The proceeds  from a sale or transfer of any right,  title or
          interest of Debtor in the Equipment or any portion thereof.

               (d) All  proceeds  of any and  all of the  foregoing  Collateral,
          whether  now  owned or  hereafter  acquired  by  Debtor  and  wherever
          located, including without limitation:

                    (i) cash, accounts receivable, instruments, contract rights,
               chattel paper, documents of title and any other obligation due to
               Debtor  with  respect  to or in  connection  with  the  foregoing
               Collateral; and

                    (ii) to the  extent not  otherwise  included,  all  payments
               under any casualty insurance (whether or not Secured Party is the
               loss payee thereof),  condemnation award, indemnity,  warranty or
               guaranty,  payable  by reason  of loss or damage to or  otherwise
               with respect to any of the foregoing Collateral.

               The Collateral  shall mean and include all personal  property and


                                 Page 37 of 200
<PAGE>

          the  proceeds  of  such  personal  property  described  in any and all
          amendments to this Agreement  hereafter executed by Debtor and Secured
          Party in connection with the Loan.

     SECTION 2.2 Security for Secured  Obligations.  This Agreement  secures the
payment of all  indebtedness  and other  obligations  of Debtor to Secured Party
with respect to: the Loans, whether now or hereafter existing, including without
limitation  Debtor's  obligations  to Secured Party under the Notes or any other
instrument  and all  amendments  thereto and  renewals and  extensions  thereof,
whether for principal,  interest,  fees, expenses or otherwise;  all of Debtor's
obligations  of payment and  performance  now or hereafter  existing  under this
Agreement, including, without limitation, all amendments hereto and renewals and
extensions  hereof (all such obligations of Debtor described in this Section 2.2
being, collectively, the "Secured Obligations").

     SECTION 2.3 Security  Interest  Absolute.  All rights of Secured  Party and
security interests  hereunder and all Secured  Obligations shall be absolute and
unconditional, irrespective of:

          (i)  any  lack  of  validity  or  enforceability  of the  Notes,  this
     Agreement  or any  other  Security  Instrument  or any other  agreement  or
     instrument relating thereto;

          (ii) any change in the time, manner, or place or payment of, or in any
     other term of, all or any of the Secured Obligations or any other amendment
     or waiver of or any consent to any departure from the Notes, this Agreement
     or any other Security Instrument; or

          (iii) any exchange, release or non-perfection of any other collateral,
     or any release,  amendment  or waiver of or consent to  departure  from any
     guaranty, for all or any of the Secured Obligations.


                                   ARTICLE III

                    REPRESENTATIONS, WARRANTIES AND COVENANTS

     SECTION  3.1  Debtor's   Representations  and  Warranties.   Debtor  hereby
represents and warrants to Secured Party that:

          (a) Debtor is a corporation  duly organized and validly existing under
     the laws of the State of its incorporation and has all requisite  corporate
     power,  authority and legal right to own its properties,  including without
     limitation  the  Collateral,  to  conduct  its  business  as is  now  being
     conducted  and to execute,  deliver and perform its  obligations  under the
     Notes,  this  Agreement,  each other  Security  Instrument to which it is a


                                 Page 38 of 200
<PAGE>

     party and each other  document or agreement  related to the  Collateral  to
     which it is a party.  Debtor is fully  qualified  to do business  and is in
     good  standing  in each  jurisdiction  in which the  failure  to be in good
     standing would have a material adverse effect on the business or operations
     of Debtor.

          (b) The  execution,  delivery and  performance by Debtor of the Notes,
     this  Agreement and each other  Security  Instrument to which it is a party
     are within  Debtor's  corporate  powers,  have been duly  authorized by all
     requisite  corporate action, do not contravene  Debtor's charter or by-laws
     or  any  law,  governmental  rule  or  regulation,   or  any  order,  writ,
     injunction,  decree,  determination or award currently in effect applicable
     to, or any contractual  restriction binding on or affecting,  Debtor or any
     of its properties,  including without limitation the Collateral, and do not
     result in or require the creation of any Lien, security interest,  right of
     acceleration, charge or encumbrance (other than pursuant to this Agreement)
     upon or with respect to any of its properties.

          (c) No  authorization or approval or other action by, and no notice to
     or filing (other than the filings  referred to in  subparagraph  (f) below)
     with, any governmental  authority or regulatory  body,  shareholders or any
     other Person is required for the due execution, delivery and performance by
     Debtor of this Agreement or any other Security  Instrument to which it is a
     party.

          (d) The Notes,  this Agreement and each other  Security  Instrument to
     which  Debtor is a party are the legal,  valid and binding  obligations  of
     Debtor,  enforceable  against  Debtor in accordance  with their  respective
     terms,  subject, in the case of enforceability,  to applicable  bankruptcy,
     insolvency, reorganization,  moratorium and other laws affecting creditors'
     rights  generally and to the  application  of general  principles of equity
     (regardless of whether such enforceability is considered in a proceeding in
     equity or at law).

          (e)  The  proceeds  of the  Loans  will be used  only to  finance  the
     purchase by Debtor of the Equipment;  Debtor owns good and marketable title
     to the Equipment; the Collateral is free and clear of all Liens (except for
     Permitted  Encumbrances in favor of Secured Party); and the Equipment is in
     good  condition and ready for  operation.  The Equipment is and will retain
     its character as personal property, and neither Debtor,  Guarantor,  or any
     Affiliate or Subsidiary of either Debtor or Guarantor shall affix or attach
     any item of  Equipment  in any manner so as to alter the  character  of the
     Equipment as personal property subject to the UCC.


                                 Page 39 of 200
<PAGE>

          (f) The filing of Uniform Commercial Code financing  statements in the
     office of the  Secretary of State of the State of Texas will create a valid
     perfected first priority security interest in the Collateral,  securing the
     payment of the  Secured  Obligations,  and all  filings  and other  actions
     necessary or desirable to perfect and protect such security  interests will
     have been taken.  No Person  other than  Secured  Party holds any  security
     interest  affecting the  Collateral.  No effective  Security  Instrument or
     other  instrument  similar  in  effect  covering  all  or any  part  of the
     Collateral is on file in any recording office, except such as may have been
     filed in favor of Secured Party relating to this Agreement.

          (g)  Debtor's  chief  executive  office is located  in Harris  County,
     Houston,  Texas.  The Debtor has not used any trade  names or other  names,
     except for "Eagle Geophysical."

          (h)  Contemporaneously   with  the  execution  and  delivery  of  this
     Agreement,  Debtor is  delivering  to Secured  Party  evidence of insurance
     satisfying the requirements of Section 4.1 hereof.

          (i) Debtor is not currently insolvent, as defined in 11 U.S.C. 101(32)
     nor will it be rendered  insolvent  by virtue of  entering  into the Notes,
     this Agreement or any other  Security  Instrument to which it is a party or
     carrying out any of the transactions contemplated hereby or thereby.

          (j) Each financial  statement of Guarantor which has been furnished to
     Secured Party fairly  presents the  financial  condition of Guarantor as of
     the date of such financial  statement.  There has been no material  adverse
     change  in  Guarantor's  financial  condition  since  the  date of the most
     current financial statement delivered to Secured Party.

          (k) There is no pending,  or to the  Debtor's  knowledge,  threatened,
     action or Proceeding affecting Debtor, Guarantor or any of their properties
     before any court,  governmental  agency or arbitrator  which may materially
     and adversely  affect the condition  (financial or otherwise) or operations
     of Debtor, Guarantor or any of their properties or which purports to affect
     the validity or  enforceability  of the Notes,  this Agreement or any other
     Security Instrument to which Debtor is a party.


                                 Page 40 of 200
<PAGE>

          (l) No Default or Event of Default has occurred and is continuing.

          (m) All sales, transfer,  use, documentation or similar taxes, fees or
     other  charges due and payable  prior to or as of the date hereof have been
     paid to the extent such are in connection  with the sale to and purchase by
     Debtor of the Equipment.

          (n) Debtor is not a party to, nor bound by, any contract, agreement or
     instrument that would conflict with this Agreement,  the Notes or any other
     contracts,  agreements  or  instruments  executed  in  connection  with the
     transactions contemplated by this Agreement.

          (o) Debtor has agreed, and hereby  acknowledges,  to accept service of
     process  at its  address  set forth in  Section  8.1 hereof in person or by
     registered or certified mail return receipt requested,  postage prepaid, in
     connection  with any  Proceeding  initiated by Secured  Party in any of the
     courts referenced in Section 8.11 hereof.

          (p) The Debtor has no  Subsidiaries,  except for African  Geophysical,
     Inc., a  corporation  organized  and existing  under the laws of the Cayman
     Islands.

          (q) Debtor has not incurred any accumulated unfunded deficiency within
     the meaning of the Employee  Retirement  Income  Security  Act of 1974,  as
     amended from time to time  ("ERISA")  nor has Debtor  incurred any material
     liability to the Pension Benefit Guaranty  Corporation ("PBGC") established
     under such Act (or any successor thereto under such Act) in connection with
     any Plan.  Debtor and its  Affiliates  are in  compliance  in all  material
     respects  with those  provisions  of ERISA and the  regulations  and public
     interpretations   thereunder   which  are  applicable  to  Debtor  and  its
     Affiliates,  except  for such  noncompliance  as would not have a  material
     adverse  effect on the  financial  condition of Debtor and its  Affiliates,
     taken as a whole.

          (r) Debtor has filed all income tax returns required to be filed prior
     to the date hereof with the various  governmental  entities  having  taxing
     authority with respect to Debtor.

          (s) Debtor (i) is not an "investment  company" as such term is defined
     in, or otherwise subject to regulations  under, the Investment  Company Act
     of 1940 and (ii) is not a "holding company" as that term is defined in, and
     is not otherwise  subject to regulations  under, the Public Utility Holding
     Company Act of 1935.


                                 Page 41 of 200
<PAGE>

          (t) Debtor has not sold,  extended  any offer to sell nor accepted any
     offer to purchase  regarding any of Debtor's  interest in the Collateral or
     with respect to the transactions  described in the Security  Instruments or
     the Notes.

          (u) Debtor has delivered true and accurate copies of the Bills of Sale
     executed by Seller with respect to the transfer of the Equipment to Debtor.

     SECTION 3.2 Affirmative Covenants.  Until all the Secured Obligations shall
have been fully paid and satisfied,  Debtor  covenants and agrees that it shall,
unless Secured Party shall have otherwise consented in writing:

          (a) promptly pay the principal of,  interest on, and any other amounts
     due under the Notes as and when the same become due,  whether at  maturity,
     by acceleration or otherwise;

          (b) (i) duly,  punctually and faithfully perform its obligations under
     the Notes, this Agreement and each other Security Instrument to which it is
     a party;  (ii)  maintain the Liens and security  interests  created by this
     Agreement  and each  other  Security  Instrument  to which it is a party as
     valid  and  perfected  Liens  on  and  security  interests  in  all  of the
     Collateral,  prior in right to any other Lien, security interest,  claim or
     other  encumbrance;  (iii)  warrant  and defend its  interest in and to the
     Collateral against the claims and demands of all Persons;  and (iv) defend,
     at Debtor's cost, any action, claim or Proceeding affecting the Collateral;

          (c) use the  proceeds  of the Loans only to finance  the  purchase  by
     Debtor of the  Equipment  and  maintain  good and  marketable  title to the
     Equipment,  free and clear of any  Liens,  security  interests,  charges or
     encumbrances except for the security interest created by this Agreement and
     Permitted Encumbrances;

          (d)  notify  Secured  Party at least  thirty  (30)  days  prior to the
     changing  of the chief  executive  office of the Debtor  from the  location
     specified in Section 3.1(g);

          (e) at no expense to Secured Party, cause each item of Equipment to be
     serviced,  maintained  and  preserved  in the same  condition,  repair  and
     working  order  as when  new,  ordinary  wear  and  tear  excepted,  and in
     accordance  with  any  manufacturer's  suggested  or  approved  maintenance
     program and warranty  requirements,  and shall,  in the case of any loss or


                                 Page 42 of 200
<PAGE>

     damage  to any item of  Equipment,  promptly  furnish  to  Secured  Party a
     statement  respecting  any such loss or damage and (unless an Event of Loss
     shall have  occurred  with respect to an item of  Equipment)  as quickly as
     practicable  after  the  occurrence  thereof  make or  cause to be made all
     repairs,  replacements and other improvements in connection therewith which
     are necessary or desirable to keep each item of Equipment in proper working
     order;

          (f)  permit  Secured  Party to inspect  the  Equipment  during  normal
     business hours upon reasonable prior notice to Debtor;

          (g) from time to time  execute and deliver  all such  supplements  and
     amendments  hereto  and to any  other  Security  Instrument,  and all  such
     financing  statements,  continuation  statements,  instruments  of  further
     assurance and other instruments, and take such other action, as the Secured
     Party requests and reasonably  deems necessary or advisable to: (i) further
     Grant,  maintain or preserve the Lien and security interest contemplated by
     this  Agreement or carry out more  effectively  the purposes  hereof;  (ii)
     perfect or protect the validity of any Security  Instrument or of any Grant
     made or to be made  by  this  Agreement;  or  (iii)  enforce  any  Security
     Instrument or preserve and defend title to the Collateral and the rights of
     the Secured Party therein against the claims of all Persons and parties;

          (h) comply with all of its  representations,  warranties and covenants
     set forth in this Agreement,  in the Notes and each Security  Instrument to
     which  it is a  party;  and  punctually  perform  and  observe  all  of its
     obligations and agreements  contained in this  Agreement,  in the Notes and
     each Security Instrument to which it is a party;

          (i)  promptly  notify the  Secured  Party of any default by any Person
     under any Security Instrument;

          (j) remain a duly organized and validly existing corporation under the
     laws of the state of its  incorporation  and remain  duly  qualified  to do
     business and in good standing in each  jurisdiction in which the failure to
     be in good standing would have a material adverse effect on the business or
     operations of Debtor;

          (k) comply in all material  respects with all applicable laws,  rules,
     regulations  and orders;  and preserve and maintain all federal,  state and
     local  licenses,  privileges,  franchises,  certificates  and other permits


                                 Page 43 of 200
<PAGE>

     necessary  for the operation of its business and the operation of each item
     of Equipment;

          (l) pay or cause to be paid  promptly  when  due (i)  (subject  to the
     right of Debtor,  in accordance  with the  provisions of this  Agreement to
     obtain extensions of the date on which such taxes are due) all property and
     other taxes (including without limitation income, sales, use, franchise and
     gross receipts taxes) and  governmental  charges or levies which are at any
     time or from time to time levied upon or assessed against it or any item of
     Equipment or are otherwise associated with the ownership,  use or operation
     of any item of  Equipment  (except  such taxes  levied on the net income of
     Secured Party) and (ii) all claims (including without limitation claims for
     labor,  materials  and supplies)  against any item of Equipment;  provided,
     that Debtor may contest any such tax or claim by appropriate Proceedings so
     long as such Proceedings shall suspend the collection  thereof,  no part of
     the Collateral  would be subject to sale,  forfeiture or diminution  during
     the pendency of such Proceedings, Debtor shall have furnished such security
     as may be required in the  Proceedings  or reasonably  requested by Secured
     Party,  Debtor conducts such contests in good faith and with due diligence,
     and promptly  after the final  determination  of each such contest,  Debtor
     pays all  amounts  which  shall be  determined  to be  payable  in  respect
     thereof;

          (m) within 120 days after the end of each fiscal  year  furnish to the
     Secured Party unaudited year end financial  reports of the Debtor including
     without  limitation  (i) a balance sheet and (ii)  statements of income and
     retained  earnings,  all prepared in  accordance  with  generally  accepted
     accounting principles  consistently applied and certified by the president,
     chief  financial  officer or any vice president of Debtor who prepared such
     financial statements as being true and accurate and fairly representing the
     financial condition of Debtor;

          (n)  promptly  report  to  Secured  Party  the   commencement  of  any
     Proceeding  against Debtor if such litigation  reasonably would be expected
     to, in the event of an unfavorable outcome, cause an Event of Default, have
     a material  adverse effect on Debtor's  financial  condition or operations,
     affect the validity or  enforceability  of the Notes, this Agreement or any
     of the Security Instruments or affect priority or enforceability of Secured
     Party's security interest in any of the Collateral;


                                 Page 44 of 200
<PAGE>

          (o) promptly  notify Secured Party in writing if a Default or an Event
     of Default has occurred;

          (p) upon the  replacement  of an item of  Equipment  with  Replacement
     Equipment, Debtor, at its own expense, will promptly (i) cause a supplement
     hereto,  in form and substance  satisfactory  to Secured Party,  subjecting
     such  Replacement  Equipment  to this  Agreement,  to be duly  executed  by
     Debtor,  (ii) furnish Secured Party with such evidence of Debtor's title to
     such Replacement Equipment, of the condition of such Replacement Equipment,
     and of compliance with the insurance provisions hereof with respect to such
     Replacement Equipment and (iii) take such other action as Secured Party may
     request  in order  that such  Replacement  Equipment  be duly and  properly
     titled in Debtor and  subject to this  Agreement  to the same extent as the
     item of Equipment replaced thereby;

          (q)  (i)  at all  times,  make  prompt  payment  of all  contributions
     required under its Plans and required to meet the minimum funding  standard
     set forth in ERISA with  respect to its Plans;  (ii) notify  Secured  Party
     immediately  of any fact,  including,  but not limited  to, any  Reportable
     Event (as defined in ERISA)  arising in  connection  with any of its Plans,
     which might constitute  grounds for termination  thereof by the PBGC or for
     the  appointment  by the  appropriate  United  States  District  Court of a
     trustee to administer such Plan, together with a statement, if requested by
     the  Secured  Party,  as to the reason  therefor  and the  action,  if any,
     proposed to be taken with respect  therefor;  and (iii)  furnish to Secured
     Party upon its request, such additional  information  concerning any of its
     Plans as may be reasonably requested;

          (r) Debtor shall pay, and save Secured Party harmless against, any and
     all losses,  judgments,  decrees and costs (including,  without limitation,
     all  reasonable  attorneys'  fees  and  expenses)  in  connection  with any
     Permitted Contest and shall promptly after the final settlement, compromise
     or  determination  (including  any appeals) of such contest,  fully pay and
     discharge the amounts which shall be levied,  assessed,  charged or imposed
     or be determined to be payable therein or in connection therewith, together
     with all  penalties,  fines,  interest,  costs and  expenses  thereof or in
     connection therewith,  and perform all acts, the performance of which shall
     be ordered or decreed as a result thereof.

     SECTION 3.3 Negative  Covenants.  Until the Secured  Obligations shall have
been fully paid and  satisfied,  Debtor  shall not,  without  the prior  written
consent of Secured Party:

          (a)(i) sell, lease,  assign,  transfer,  convey, Grant an interest in,
     exchange or otherwise  dispose of any of the Collateral or any part thereof
     or (ii) cause or permit any subleasing of any of the Equipment (except that
     Debtor  may lease  any or all  items of  Equipment  to a  Permitted  Lessee
     pursuant to a Permitted Lease);


                                 Page 45 of 200
<PAGE>

          (b) create or suffer to exist any Lien affecting the Collateral or any
     part  thereof,  other  than in favor of  Secured  Party or other  Permitted
     Encumbrances;

          (c) use the Equipment for any unlawful purpose;

          (d) dissolve,  wind up or liquidate or seek or permit the  dissolution
     or liquidation of Debtor in whole or in part;

          (e) [intentionally omitted];

          (f) as  against  Secured  Party,  claim  any  credit  on,  or make any
     deduction from, the principal or interest payable on the Notes,  whether by
     reason of the  payment  of any taxes  levied  or  assessed  upon any of the
     Collateral, or otherwise;

          (g) take or  permit  any  action  which  would  result  in an Event of
     Default;

          (h) [intentionally omitted];

          (i) [intentionally omitted];

          (j) enter into any new line of business or operation  not currently in
     existence  with  respect to the  Debtor or  materially  alter its  existing
     operations;

          (k)  consolidate  with or merge  into any other  corporation  or sell,
     assign,  convey,  transfer or lease  substantially  all of its assets as an
     entirety to any Person unless:

               (i) Debtor is the surviving  entity of any such  consolidation or
          merger; or

               (ii) (A) the  corporation  formed by such  consolidation  or into
          which Debtor is merged,  or the Person which  acquires by  conveyance,
          transfer or lease of  substantially  all of the assets of Debtor as an
          entirety,  shall be a solvent corporation organized and existing under
          the laws of the United  States or any state thereof or the District of


                                 Page 46 of 200
<PAGE>

          Columbia and shall  execute and deliver to Secured  Party an agreement
          containing an effective  assumption by such  successor,  transferee or
          lessee corporation of the due and punctual  performance and observance
          of each covenant and condition of this Agreement;

                    (B)  immediately  prior to and after  giving  effect to such
               transaction,  no Default or Event of Default  shall have occurred
               and be continuing;

                    (C)  Debtor  shall  have   delivered  to  Secured   Party  a
               certificate  signed by an  officer  of Debtor  and an  opinion of
               Debtor's  counsel  satisfactory  in form and substance to Secured
               Party  stating  that  such  consolidation,   merger,  conveyance,
               transfer  or lease  and the  assumption  agreement  mentioned  in
               clause  3.3(k)(ii)(A)  above comply with the requirements of this
               Section 3.3(k) and that all conditions  precedent herein provided
               for relating to such transaction have been complied with.

     Upon any  consolidation  or  merger in which  Debtor  is not the  surviving
corporation,  or any  conveyance,  transfer  or lease of  substantially  all the
assets of Debtor as an entirety in  accordance  with this  Section  3.3(k),  the
successor  corporation  formed by such  consolidation  or into  which  Debtor is
merged or to which such conveyance,  transfer or lease is made (x) shall succeed
to,  and be  substituted  for (but  without  release  of Debtor  from any of its
obligations  hereunder)  and (y) may exercise  every right and power of,  Debtor
under this Agreement with the same effect as if such successor  corporation  had
been named as a Debtor herein.

          (l) attach or affix any item of Equipment in any manner so as to alter
     the character of the Equipment as personal property subject to the UCC.


                                   ARTICLE IV

               INSURANCE, TRANSFER, CONDEMNATION AND EVENT OF LOSS

     SECTION 4.1 Insurance.

          (a) Property and Liability Insurance.  So long as this Agreement is in
     effect,  Debtor shall maintain and keep in force, or cause to be maintained
     and kept in force,  without cost or expense to Secured Party,  with respect
     to all items of Equipment prior to the expiration or earlier termination of
     this Agreement (i) all-risk property damage insurance in an amount not less
     than the  aggregate  Termination  Value for all items of  Equipment of such
     type as shall be  satisfactory  to  Secured  Party  and (ii)  comprehensive
     general public  liability  insurance,  including  blanket  contractual  and


                                 Page 47 of 200
<PAGE>

     personal injury insurance, covering any risks which Secured Party or Debtor
     might incur by reason of the use or operation  of the  Equipment in or over
     any  area,  in an amount  not less than  $6,000,000  per  occurrence.  Such
     insurance  policy or policies  referenced to in clause (i) of the preceding
     sentence  will  name  Secured  Party as a loss  payee to the  extent of its
     interest;  provided,  that upon  verification  by  Secured  Party  that all
     amounts owing to Secured Party under the Agreement,  the Notes or any other
     Security  Instrument have been paid in full, then Secured Party shall remit
     all remaining  property damage insurance  proceeds,  respecting any item of
     Equipment,  to the extent such proceeds are controlled by Secured Party, to
     Debtor.  Such insurance policy or policies  referenced to in clause (ii) of
     the preceding  sentence  will name Secured Party as an additional  insured.
     Each of the policies required by this Section 4.1 will provide that (A) the
     same may not be  invalidated  against  Secured  Party by  reason of (1) any
     violation  of a  condition  or breach of  warranty  of the  policies or the
     application  therefor by any Person excepting Secured Party, (2) the use of
     any item of Equipment  for purposes not  permitted by such  policies by any
     Person excepting Secured Party, (3) any foreclosure proceeding or notice of
     sale  regarding  any  item of  Equipment  or (4) the  title  or  beneficial
     ownership of any item of Equipment being held by a party other than Debtor;
     (B) the policies may be canceled or materially  amended by the insurer only
     after  thirty (30) days' prior  written  notice to Secured  Party;  (C) the
     interests of Secured Party in such  insurance  policies are  assignable and
     (D)  such  insurance  policies  shall  be  primary  insurance.  Each of the
     policies  required  by this  Section  4.1  shall  otherwise  be  reasonably
     satisfactory  to Secured  Party.  The policies of insurance  required under
     this Section shall be valid and enforceable  policies issued by insurers of
     recognized  responsibility  acceptable to Secured  Party.  On or before the
     date hereof,  and  thereafter at intervals of not more than twelve  months,
     Debtor will furnish or cause to be furnished to Secured Party a certificate
     or other  evidence  satisfactory  to Secured Party signed by an independent
     insurance broker certifying to Secured Party's satisfaction that Debtor has
     insurance in place with respect to all items of  Equipment  which  complies
     with the insurance requirements of this Agreement.  If Debtor shall fail to
     cause the  insurance  required  under this  Section  4.1 to be carried  and
     maintained,  Secured  Party may, but shall have no obligation  to,  provide
     such insurance and Debtor shall reimburse Secured Party upon demand for the
     cost  thereof as a  supplemental  payment  hereunder  in  addition to other
     amounts owing with respect to the Notes or this Agreement.


                                 Page 48 of 200
<PAGE>

     SECTION 4.2 Transfer of Collateral.  Except as otherwise expressly provided
by the provisions of this Loan and Security Agreement, Debtor will not (prior to
the  satisfaction of all  Obligations)  lease,  Grant or otherwise  transfer the
Collateral  or any part thereof or any interest  therein to any party other than
Secured Party without Secured Party's prior written consent and any and all such
transfers shall be made under and subject to Secured Party's  security  interest
in such Collateral hereunder. Prior to or simultaneously with any such transfer,
the transferee shall accept, agree to and execute an agreement assuming Debtor's
Obligations  to Secured  Party,  in form and substance  satisfactory  to Secured
Party.

     SECTION 4.3  Condemnation.  Immediately upon obtaining  knowledge  thereof,
Debtor shall notify  Secured Party of any  condemnation  or other eminent domain
Proceedings with respect to any item of Equipment. Secured Party may participate
in any such  Proceedings,  and  Debtor  shall  provide  Secured  Party  with all
instruments  required by it to permit such  participation  upon obtaining actual
knowledge thereof. Debtor shall pay all reasonable fees and expenses incurred by
Secured  Party in  connection  with Secured  Party's  participation  in any such
Proceedings. All proceeds arising from any such eminent domain Proceedings shall
be paid to and applied by the Secured Party as specified in Section 5.3 hereof.

     SECTION 4.4 Certain Events of Loss. Upon the occurrence of an Event of Loss
with respect to any item of  Equipment,  Debtor  shall pay Secured  Party within
thirty (30) days after  receipt of insurance  proceeds  after the  occurrence of
such Event of Loss (but in no event shall such period extend 120 days beyond the
date of the  occurrence of such Event of Loss) or, if such day is not a Business
Day, on the next  occurring  Business Day (the "Event of Loss Payment  Date") an
amount  equal  to the  sum of (a)  the  Termination  Value  (computed  as of the
Installment  Payment Date immediately  preceding the Event of Loss Payment Date)
for the items of  Equipment  then  subject  to the  Event of Loss,  plus (b) all
accrued but unpaid interest,  plus (c) any  Break-Funding  Costs with respect to
the items of  Equipment  then  subject to the Event of Loss,  plus (d) all other
obligations  owing  hereunder on the Event of Loss Payment Date. Upon payment of
the amounts set forth in (a)-(d) above,  Secured Party shall release its Lien on
the items of Equipment then subject to the Event of Loss.


                                    ARTICLE V

                         EVENTS OF DEFAULT AND REMEDIES

     SECTION 5.1 Events of Default.  Any of the  following  occurrences  or acts
shall  constitute an event of default  under this  Agreement  (individually,  an
"Event of Default"):

          (a) Debtor  shall fail to pay any  principal  of, or interest  on, the
     Notes  or any  other  indebtedness  of  Debtor  to  Secured  Party,  now or


                                 Page 49 of 200
<PAGE>

     hereafter  existing,  within five (5) Business  Days from the date the same
     shall  be  due  and  payable,  whether  at  maturity,  by  acceleration  or
     otherwise; or

          (b) Except as specified in Section 5.1(a), Debtor shall default in the
     payment of any costs or expenses  incurred by Secured  Party in  connection
     herewith or any other amounts  hereunder or under the Notes within ten (10)
     Business Days from the date on which Secured Party notifies  Debtor of such
     default; or

          (c) Debtor  shall fail to observe the terms and  covenants of Sections
     3.2(b)(ii), 3.2(c), 3.2(l), 3.3(a)-(l) or 4.1; or

          (d) Except as otherwise specified in Sections 5.1(a)-(c), Debtor shall
     fail to perform or observe any other term,  covenant or agreement contained
     in the Notes,  this  Agreement or any other  Security  Instrument  and such
     failure  shall  remain  unremedied  for a period of  thirty  (30) days from
     either the date  Debtor  first  knows of such  failure or the date on which
     Secured Party notifies Debtor of such failure; or

          (e) Any  representation  or warranty made by Debtor in the Notes, this
     Agreement,  any other  Security  Instrument or in any  certificate or other
     document  delivered  pursuant  hereto or thereto  shall  prove to have been
     incorrect or misleading in any material respect when made; or

          (f) Debtor shall admit in writing its  inability to pay its debts,  or
     shall  make a general  assignment  for the  benefit  of  creditors;  or any
     Proceeding  shall be instituted by or against  Debtor seeking to adjudicate
     it  bankrupt  or  insolvent,   or  seeking   reorganization,   liquidation,
     arrangement,  adjustment  or  composition  of it or its debt  under any law
     relating to bankruptcy,  insolvency or reorganization or relief of debtors,
     or seeking appointment of a receiver,  custodian, trustee, or other similar
     official for it or for any  substantial  part of its property,  and, in the
     case of any such  Proceeding  instituted  against  Debtor,  it shall remain
     undismissed  for a period of sixty  (60)  days;  or Debtor  shall  take any
     action to authorize any of the actions set forth in this subsection (f); or

          (g)  This  Agreement  shall,  for any  reason,  except  to the  extent


                                 Page 50 of 200
<PAGE>

     permitted by the terms hereof,  cease to create a valid first priority Lien
     on and perfected first priority  security interest in any of the Collateral
     purported to be covered hereby; or

          (h) Any provision of the Notes,  this  Agreement or the other Security
     Instruments  shall cease to be valid and binding on Debtor,  as a signatory
     thereto,  or Debtor  shall so state in writing;  or Secured  Party shall be
     deprived of any of the  benefits of the Note,  this  Agreement or any other
     Security Instrument for any reason whatsoever; or

          (i) For any reason  whatsoever,  Debtor is not entitled to or does not
     possess the property rights or other rights  regarding the Collateral which
     have been assigned or transferred to Secured Party; or

          (j) Debtor  shall  dissolve or any action  shall be taken by Debtor to
     wind up or liquidate  Debtor's  business,  affairs or property or assets or
     Debtor shall announce its intention to do so without  Secured Party's prior
     written consent; or

          (k)  Any  sale,  transfer,  conveyance,   abandonment,   condemnation,
     partition  or  change in  ownership  of any item or items of  Equipment  in
     excess of  $50,000,  or any portion  thereof  shall  occur,  whether in one
     transaction  or a series of  transactions  without  Secured  Party's  prior
     written consent; or

          (l) An  attachment  or other Lien  shall be filed or levied  against a
     substantial part of the property of Debtor (or any Affiliate of Debtor) and
     such judgment shall continue  unstayed and in effect, or such attachment or
     Lien shall continue  undischarged  or unbonded,  for a period of sixty (60)
     days; or

          (m) Guarantor  shall fail to make a payment under the Guaranty  within
     five (5) Business Days from the date such payment is due; or

          (n) Except as specified  in Section  5.1(m),  Guarantor  shall fail to
     perform or observe any other term,  covenant or agreement  contained in the
     Guaranty and such failure  shall remain  unremedied  for a period of thirty
     (30) days from either the date Guarantor first knows of such failure or the
     date on which Secured Party notifies Guarantor of such failure; or

          (o) Any  representation  or warranty made by Guarantor in the Guaranty
     or in any certificate or other document  delivered  pursuant  thereto shall
     prove to have been  incorrect or  misleading  in any material  respect when
     made; or

          (p)  Guarantor  shall admit in writing its inability to pay its debts,
     or shall make a general  assignment  for the benefit of  creditors;  or any


                                 Page 51 of 200
<PAGE>

     Proceeding  shall  be  instituted  by  or  against   Guarantor  seeking  to
     adjudicate   it  bankrupt   or   insolvent,   or  seeking   reorganization,
     liquidation, arrangement, adjustment or composition of its finances or debt
     under any law  relating to  bankruptcy,  insolvency  or  reorganization  or
     relief  of  debtors,  or  seeking  appointment  of a  receiver,  custodian,
     trustee,  or other similar official for its finances or for any substantial
     part of its property,  and, in the case of any such  Proceeding  instituted
     against  Guarantor,  it shall remain undismissed for a period of sixty (60)
     days;  or Guarantor  shall take any action to authorize  any of the actions
     set forth in this subsection (p); or

          (q) Guarantor (or any Affiliate of Guarantor)  shall be in default (i)
     under any lease, loan agreement or other agreement,  instrument or document
     respecting any such obligation of Guarantor (or any Affiliate of Guarantor)
     in excess of $10,000,000,  now or hereafter  entered into between Guarantor
     (or any Affiliate of Guarantor) and Secured Party, or between Guarantor (or
     any  Affiliate of  Guarantor)  and any parent,  subsidiary  or affiliate of
     Secured  Party,  and such  default  shall have been  declared  by the party
     entitled  to declare  the same,  (ii)  under any  promissory  note,  now or
     hereafter  executed  by  Guarantor  (or any  Affiliate  of  Guarantor)  and
     delivered  to any party  referred to in clause (i) above  evidencing a loan
     made by any such party to  Guarantor  (or any  Affiliate of  Guarantor)  or
     (iii)  in the  payment  of any  single  amount  due by  Guarantor  (or  any
     Affiliate of  Guarantor) to any Person  (other than Secured  Party,  or any
     parent,  subsidiary or affiliate of Secured Party) in excess of $10,000,000
     (excluding any such  obligation  which is being  contested in good faith by
     Guarantor (or any Affiliate of Guarantor) by appropriate  proceedings,  and
     the liability  for which has not been reduced to judgment)  relating to the
     payment of  borrowed  money or the  payment of rent or hire under any lease
     agreement and such default  shall have  continued for more than thirty (30)
     days after the date  Guarantor  (or any  Affiliate of  Guarantor)  obtained
     knowledge or received notice thereof;  or an attachment or other Lien shall
     be filed or levied against a substantial  part of the property of Guarantor
     or Debtor and such judgment shall continue  unstayed and in effect, or such
     attachment or Lien shall continue undischarged or unbonded, for a period of
     sixty (60) days; or

          (r) Any provision of the Guaranty  shall cease to be valid and binding
     on  Guarantor,  as a  signatory  thereto,  or  Guarantor  shall so state in


                                 Page 52 of 200
<PAGE>

     writing;  or Secured  Party shall be deprived of any of the benefits of the
     Guaranty for any reason whatsoever; or

          (s) Any action  shall be taken by  Guarantor  to wind up or  liquidate
     Guarantor's  business,  affairs or  property or assets or  Guarantor  shall
     announce  his  intention to do so without  Secured  Party's  prior  written
     consent.

     SECTION 5.2  Remedies.  If any Event of Default  shall have occurred and be
continuing:

          (a) the Secured Party may do one or more of the following:

               (i)  declare  the Notes and all  interest  thereon  and all other
          Secured  Obligations  to be forthwith  due and payable,  whereupon the
          Notes, all such interest and all Secured  Obligations shall become and
          be forthwith due and payable, without presentation, demand, protest or
          further notice of any kind, all of which are hereby  expressly  waived
          by Debtor;

               (ii) exercise, in respect of the Collateral, in addition to other
          rights and remedies provided for herein or otherwise  available to it,
          all the rights and  remedies of a secured  party on default  under the
          UCC and/or other  applicable  law and also (A) require  Debtor to, and
          Debtor  hereby agrees that it will at its expense and upon the request
          of Secured Party forthwith,  assemble all or part of the Collateral as
          directed by Secured  Party and make it available to Secured Party at a
          place to be designated by Secured Party and (B) without  notice except
          as specified below,  sell the Collateral or any part thereof in one or
          more  parcels at public or  private  sale,  at any of Secured  Party's
          offices or elsewhere,  for cash, on credit or for future delivery, and
          upon  such  other  terms  as  Secured  Party  may  deem   commercially
          reasonable.  Debtor agrees that, to the extent notice of sale shall be
          required by law, at least  fifteen  (15) days' notice to Debtor of the
          time and place of any public  sale or the time after which any private
          sale is to be made shall constitute reasonable  notification.  Secured


                                 Page 53 of 200
<PAGE>

          Party shall not be obligated to make any sale of Collateral regardless
          of notice of sale  having been  given.  Secured  Party may adjourn any
          public or private sale from time to time by  announcement  at the time
          and place fixed therefor,  and such sale may,  without further notice,
          be made at the time and place to which it was so adjourned;

               (iii) to the extent  permitted by applicable  law,  bring suit at
          law, in equity or through other appropriate  Proceedings,  whether for
          the specific  performance  of any  covenant or agreement  contained in
          this  Agreement  or any  of the  other  Security  Instruments,  for an
          injunction  against a violation of any of the terms hereof or thereof,
          in aid of the exercise of any power Granted  hereby or thereby,  or by
          law,  to recover  judgment  for any and all  amounts due on the Notes,
          this  Agreement,  any of the other Security  Instruments or otherwise,
          including,   without  limitation,   any  deficiency   remaining  after
          foreclosure hereunder;

               (iv)  exclude  Debtor  from the  Collateral  and  take  immediate
          possession  of  interest  therein,  and,  at the  expense  of  Debtor,
          maintain,  repair, alter, use, add to, improve, insure, lease, operate
          and manage the  Collateral  in such manner as Secured  Party shall see
          fit; and

               (v) take any other appropriate  action to protect and enforce the
          rights and remedies of Secured Party hereunder, or under or in respect
          of any other Security Instrument, or otherwise.

          (b)  Notwithstanding  any provision to the contrary  contained in this
     Agreement, the Notes or any other Security Instrument, the unpaid principal
     amount of the Notes and all accrued  interest and other sums payable  under
     the Notes or under this Agreement shall be forthwith payable upon a sale of
     any  portion  of the  Collateral  pursuant  to  subsection  (a)(ii) of this
     Section 5.2. All earnings,  revenues,  proceeds, rents, issues, profits and
     income  derived  pursuant to subsection  (a)(iv) of this Section 5.2 (after
     deducting  costs and expenses of operation and other proper  charges),  all
     proceeds  of any such sale and all other  money and  property  received  or
     recovered by the Secured  Party  pursuant to this Section 5.2 shall be held
     and applied as set forth in Section 5.3 hereof.

          (c) The power to effect any sale under this  Section  5.2 shall not be
     exhausted  by any one or more  sales as to any  portion  of the  Collateral
     remaining unsold, but shall continue unimpaired until all of the Collateral
     shall have been sold or all of the Secured Obligations shall have been paid
     in full.

          (d)  Secured  Party  may  bid  for  and  acquire  any  portion  of the
     Collateral  in  connection  with a sale thereof under this Section 5.2, and


                                 Page 54 of 200
<PAGE>

     may pay all or part of the  purchase  price by  crediting  against  amounts
     owing on the Secured  Obligations,  all or part of the net proceeds of such
     sale after  deducting the costs,  charges and expenses  incurred by Secured
     Party in connection with such sale. The Notes need not be produced in order
     to complete  any such sale or effect such credit.  Secured  Party may hold,
     lease,  operate,  manage or otherwise deal with any property so acquired in
     any manner permitted by law.

          (e) Secured Party shall execute and deliver an appropriate  instrument
     of conveyance transferring its interest in any portion of the Collateral in
     connection with a sale thereof under this Section 5.2. In addition,  Debtor
     hereby irrevocably appoints Secured Party as its agent and attorney-in-fact
     to transfer  and convey its  interest in any portion of the  Collateral  in
     connection  with such a sale  thereof and to take all action  necessary  to
     effect such sale.  No purchaser or transferee at such a sale shall be bound
     to ascertain  Secured Party's  authority,  inquire into the satisfaction of
     any condition precedent or see to the application of any monies.

          (f) Secured Party's right to seek and recover  judgment on the Secured
     Obligations shall not be affected by the seeking,  obtaining or application
     of any other relief under or with  respect to this  Agreement.  Neither the
     Lien of this Agreement nor any rights or remedies of Secured Party shall be
     impaired by the recovery of any judgment by Secured Party against Debtor or
     by the levy of an  execution  under such  judgment  upon any portion of the
     Collateral.

          (g) All  rights  and  remedies  from  time to time  conferred  upon or
     reserved to the Secured  Party are  cumulative,  and none is intended to be
     exclusive  of another  and shall be in  addition  to every  other  right or
     remedy  permitted by law. No delay or omission in insisting upon the strict
     observance  or  performance  of any  provision  of  this  Agreement,  or in
     exercising  any  right  or  remedy,  shall  be  construed  as a  waiver  or
     relinquishment of such provision, nor shall it impair such right or remedy.
     Every right and remedy may be  exercised  from time to time and as often as
     deemed  expedient in any  combination  and order desired by Secured  Party;
     provided,  however,  that Secured Party shall exercise none of the remedies
     referenced  in this Section 5.2 with respect to the  Collateral  unless and
     until an Event of Default shall have occurred and be continuing.

          (h)   Anything   contained   in  this   Agreement   to  the   contrary
     notwithstanding,  until an Event of Default shall occur and be  continuing:


                                 Page 55 of 200
<PAGE>

     (i) all rights,  powers,  privileges  and other  benefits of or accruing to
     Debtor under the Assigned  Agreements  shall be exercisable only by Debtor,
     without the consent or approval  of the Secured  Party,  (ii) Debtor  shall
     retain full right to make all waivers and  agreements,  to give and receive
     all notices and other instruments or communications, and to take all action
     upon the  occurrence of a default under any Assigned  Agreement,  including
     the  commencement,  conduct and  consummation of legal,  administrative  or
     other  proceedings,  as shall be permitted thereby or by law, and to do any
     and all other  things  which  Debtor is or may be  entitled to do under any
     Assigned Agreement.

     SECTION 5.3 Proceeds of Collateral.  All cash proceeds  received by Secured
Party in respect of any sale of,  collection from, or other realization upon all
or any part of the Collateral  shall be held by Secured Party as collateral for,
and then promptly  thereafter applied by Secured Party against,  all or any part
of the amounts  due under the Notes and the other  Secured  Obligations  in such
order as Secured  Party shall elect.  Any surplus of such cash or cash  proceeds
held by Secured  Party and  remaining  after  payment in full of all the Secured
Obligations  shall be paid  over to  Debtor  or to  whomsoever  may be  lawfully
entitled to receive such surplus.

     SECTION 5.4 Waiver of Rights; Receiver.

          (a) Debtor consents to the appointment of one or more receivers of all
     or part of the  Collateral,  upon the request of Secured Party, if an Event
     of Default shall have occurred and be continuing.

          (b) To the extent  permitted by law, Debtor hereby waives its right to
     seek,  and hereby  agrees  that it will not seek or derive  any  benefit or
     advantage  from, any of the following  whether now existing or hereafter in
     effect:

               (i) any stay,  extension,  moratorium or similar law with respect
          to the Collateral or the Secured Obligations;

               (ii) any law  allowing for the  redemption  of any portion of the
          Collateral after a sale thereof under Section 5.2 hereof; and

               (iii) any right to have any  portion of the  Collateral  after an
          Event of Default shall have occurred.

     Debtor  covenants not to hinder,  delay or impede the exercise of any right


                                 Page 56 of 200
<PAGE>

     or remedy of Secured Party under or in respect of this Agreement and agrees
     to suffer and permit the exercise of each such remedy.


                                   ARTICLE VI

                             INDEMNITY AND EXPENSES

     SECTION 6.1 General  Indemnity.  Debtor hereby  assumes  liability for, and
does hereby agree,  whether or not any of the transactions  contemplated hereby,
by the Security Instruments or the Notes are consummated, to indemnify, protect,
save,  defend  and  hold  harmless  Secured  Party  and  each  of its  officers,
directors, stockholders,  successors, assigns, agents and servants (for purposes
of this Article VI, each of the foregoing may be referred to  individually  as a
"Beneficiary")  from and against  any and all  obligations,  fees,  liabilities,
losses, damages,  penalties,  claims, demands, actions, suits, judgments,  costs
and expenses, including, without limitation, reasonable legal fees and expenses,
of every kind and nature whatsoever imposed on, incurred by, or asserted against
any  Beneficiary,  in any way relating to or arising out of (a) the manufacture,
construction, ordering, purchase, acceptance or rejection, financing, ownership,
titling or retitling,  registration  or  re-registration,  acceptance,  leasing,
subleasing,  possession,  use, operation,  maintenance,  storage, removal, sale,
delivery  or other  disposition  of any item of  Equipment,  including,  without
limitation,  any of such as may arise from (i) loss or damage to any property or
death or injury to any  person,  (ii)  patent or latent  defects  in any item of
Equipment (whether or not discoverable by Debtor or any Beneficiary),  (iii) any
claims based on strict liability in tort or otherwise,  (iv) any claims based on
patent,  trademark  or  copyright  infringement  and (v)  any  claims  based  on
liability  arising  under the  applicable  environmental  or noise or  pollution
control law or regulation or (b) any failure on the part of Debtor to perform or
comply with any of the terms of the Security Instruments or the Notes or (c) any
Security  Instrument or the Notes. Debtor shall not be required to indemnify any
Beneficiary  for any claims  resulting  from acts  which  would  constitute  the
willful  misconduct or gross negligence of such  Beneficiary.  Debtor shall give
Secured  Party prompt  notice of any  occurrence,  event or  condition  known to
Debtor as a consequence of which any  Beneficiary is or is reasonably  likely to
be entitled to indemnification  hereunder.  Debtor shall promptly upon demand of
any such  Beneficiary  reimburse such  Beneficiary for amounts expended by it in
connection with any of the foregoing or pay such amounts directly.  Debtor shall
be  subrogated  to a  Beneficiary's  rights in any matter with  respect to which
Debtor has actually  reimbursed such  Beneficiary for amounts  expended by it or
has actually  paid such amounts  directly  pursuant to this Section 6.1. In case
any action,  suit or Proceeding is brought against any Beneficiary in connection
with any claim  indemnified  against  hereunder,  such  Beneficiary  will, after


                                 Page 57 of 200
<PAGE>

receipt of notice of the commencement of such action, suit or Proceeding, notify
Debtor  thereof,  enclosing a copy of all papers  served upon such  Beneficiary.
Debtor may, and upon any Beneficiary's request will, at Debtor's expense, resist
and defend such action, suit or Proceeding,  or cause the same to be resisted or
defended  by counsel  selected  by Debtor and  reasonably  satisfactory  to such
Beneficiary and in the event of any failure by Debtor to do so, Debtor shall pay
all  costs,  fees  and  expenses  (including,  without  limitation,   reasonable
attorney's  fees and expenses)  incurred by such  Beneficiary in connection with
such action, suit or Proceeding.

     SECTION 6.2 General Tax Indemnity.  Debtor agrees to pay, and indemnify and
hold each Beneficiary  harmless on an after-tax basis from, any and all federal,
state, local and foreign taxes, fees,  withholdings,  levies,  imposts,  duties,
assessments  and charges of any kind and nature  whatsoever,  together  with any
penalties,   fines  or  interest   therein   (herein   called  "Taxes  or  Other
Impositions")  howsoever  imposed,  whether  levied or imposed  upon or asserted
against such Beneficiary,  Debtor, any item of Equipment or any part thereof, by
any federal, state or local government or taxing authority in the United States,
or by any taxing  authority or  governmental  subdivision of a foreign  country,
upon or  with  respect  to (a)  any  item  of  Equipment  (b)  the  manufacture,
construction,  ordering,  purchase,  ownership,  financing,  delivery,  leasing,
re-leasing,  possession,  use, maintenance,  registration,  titling,  licensing,
documentation,  return,  sale (including,  without  limitation,  sale to a third
party) or other application or disposition thereof,  (c) the payments,  receipts
or earnings  arising from any item of  Equipment  or (d) the Bills of Sale,  the
Security  Instruments  or the Notes,  or upon the  payments by Debtor  under the
Bills of Sale, the Notes or the Security  Instruments;  provided,  however, that
the foregoing indemnity shall not apply to any taxes or other impositions to the
extent based upon or measured by any  Beneficiary's  net income (unless such tax
or other imposition is a Covered Income Tax as hereinafter  defined),  and which
are imposed or levied by any  federal,  state or local  taxing  authority in the
United States.  For purposes hereof, a "Covered Income Tax" shall mean an income
tax (including, without limitation, a tax imposed upon gross income or receipts)
imposed on any Beneficiary by any taxing authority  (excluding the United States
federal  government) in whose jurisdiction such Beneficiary  (including for this
purpose all entities with which it is combined,  integrated or  consolidated  in
such taxing authority's  jurisdiction)  would not engage in business,  would not
maintain an office or other place of business and would not otherwise be located
therein, but for such Beneficiary's role in the transaction  associated with the
financing of the Equipment, the operation of the Equipment in such jurisdiction,
the  presence  of  Debtor  or  any  use  of the  Equipment  or the  transactions
contemplated by the Bills of Sale, the Security Instruments or the Notes.


                                 Page 58 of 200
<PAGE>

     Each  Beneficiary  shall  furnish  Debtor with copies of any  requests  for
information  received by such Beneficiary from any taxing authority  relating to
any taxes or other  impositions  with  respect to which  Debtor is  required  to
indemnify  hereunder,  and if a claim is made against such  Beneficiary  for any
such taxes or other  impositions,  with  respect to which Debtor is liable for a
payment or indemnity  hereunder,  such  Beneficiary  shall give Debtor notice in
writing within (10) Business Days of such  Beneficiary's  receipt of such claim.
Debtor may, at its sole cost and expense,  either in its own name or in the name
of any  Beneficiary,  contest the validity,  applicability or amount of any such
tax or other  imposition  by means of a Permitted  Contest.  If any  Beneficiary
shall obtain a refund of any amount paid by Debtor pursuant to this Section 6.2,
such  Beneficiary  shall pay to Debtor the amount of such refund,  together with
the amount of any interest  actually  received by such Beneficiary on account of
such refund. Debtor will promptly notify Secured Party of all reports or returns
required to be made with respect to any tax or other  imposition with respect to
which Debtor is required to indemnify  hereunder and will promptly  provide each
Beneficiary  with all information  necessary for the making and timely filing of
such reports or returns by such  Beneficiary.  If any Beneficiary  requests that
any such reports or returns be prepared and filed by Debtor, Debtor will prepare
and  file  the  same if  permitted  by  applicable  law to do so,  and if not so
permitted,  Debtor shall  prepare such reports or returns for  signature by such
Beneficiary,  and shall forward the same,  together with  immediately  available
funds for payment of any tax or other  imposition due, to such  Beneficiary,  at
least ten (10)  Business Days in advance of the date such payment is to be made.
Upon written  request,  Debtor shall furnish each Beneficiary with copies of all
paid  receipts or other  appropriate  evidence of payment for all taxes or other
impositions paid by Debtor pursuant to this Section 6.2.


                                   ARTICLE VII

                 FURTHER ASSURANCES; ATTORNEY-IN-FACT; DISCHARGE

     SECTION 7.1 Further Assurances.

          (a) Debtor  agrees  that from time to time,  at the expense of Debtor,
     Debtor will  promptly  execute and  deliver  all  further  instruments  and
     documents,  and take all further  action that Secured Party may  reasonably
     deem necessary or desirable, or that Secured Party may otherwise reasonably
     request,  in order to perfect and protect any security  interest Granted or


                                 Page 59 of 200
<PAGE>

     purported to be Granted  hereby or to enable  Secured Party to exercise and
     enforce its rights and remedies  hereunder with respect to any  Collateral.
     Without limiting the generality of the foregoing,  Debtor will cooperate to
     execute and file financing or continuation statements, or amendments hereto
     or thereto,  and such other instruments or notices,  as may be necessary or
     reasonably desirable,  or as Secured Party may reasonably request, in order
     to perfect and preserve the security  interests  Granted or purported to be
     Granted hereby.

          (b) A carbon,  photographic or other reproduction of this Agreement or
     any financing  statement  covering the Collateral or any part thereof shall
     be sufficient as a financing statement where permitted by law.

          (c) Debtor will furnish to Secured Party from time to time  statements
     and schedules  further  identifying  and describing the Collateral and such
     other  reports in  connection  with the  Collateral  as  Secured  Party may
     reasonably request, all in reasonable detail.

     SECTION  7.2  Secured  Party  Appointed  Attorney-in-Fact.   Debtor  hereby
irrevocably  appoints  Secured  Party  to  serve  as  Debtor's  attorney-in-fact
(provided,  the parties  hereto agree that Secured Party may not act as Debtor's
attorney-in-fact until the occurrence and during the continuation of an Event of
Default),  with full  authority in the place and stead of Debtor and in the name
of Debtor,  Secured  Party or  otherwise,  from time to time in Secured  Party's
discretion, to take any action and to execute any instrument,  including without
limitation financing  statements or amendments thereto,  which Secured Party may
deem  necessary  or  advisable to  accomplish  the  purposes of this  Agreement,
including without limitation:

          (a) to obtain  and  adjust  insurance  required  to be paid to Secured
     Party hereunder;

          (b) to ask, demand, collect, sue for, recover,  compound,  receive and
     give  acquittance and receipts for monies due and to become due under or in
     respect of any of the Collateral;

          (c) to receive,  endorse, and collect any drafts or other instruments,
     documents and chattel  paper,  in connection  with  subsections  (a) or (b)
     above; and

          (d) to file any claims or take any action or institute any Proceedings
     which Secured Party may deem  necessary or desirable for the  collection of
     any of the  Collateral  or otherwise to enforce the rights of Secured Party
     with respect to any of the Collateral.


                                 Page 60 of 200
<PAGE>

     SECTION  7.3  Secured  Party May  Perform.  If Debtor  fails to perform any
agreement  contained  herein,   Secured  Party  may  itself  perform,  or  cause
performance  of, such  agreement,  and the expenses of Secured Party incurred in
connection therewith shall be payable by Debtor under Section 6.1.

     SECTION 7.4 Secured Party's Duties.  The powers  conferred on Secured Party
hereunder  are solely to protect its  interest in the  Collateral  and shall not
impose any duty upon it to exercise any such powers. Secured Party shall have no
duty as to any Collateral or as to the taking of any necessary steps to preserve
rights against other parties or any other rights pertaining to any Collateral.

     SECTION 7.5 Continuing  Security Interest;  Transfer of Note;  Termination.
This  Agreement  shall:  (a)  create  a  continuing  security  interest  in  the
Collateral  and shall remain in full force and effect  until  payment in full of
the Secured Obligations,  be binding upon Debtor, its successors and assigns and
(b)  inure  to the  benefit  of  Secured  Party  and its  permitted  successors,
transferees  and assigns.  Without  limiting  the  generality  of the  foregoing
clause,  Secured  Party may  assign  or  otherwise  transfer  all or any part of
Secured Party's interest in the Notes and/or the Security  Instruments to one or
more persons or entities,  and such other  persons or entities  shall  thereupon
become vested with all the benefits in respect  thereof Granted to Secured Party
herein.  Upon the  payment  in full of the  Secured  Obligations,  the  security
interest  Granted hereby shall terminate and all rights to the Collateral  shall
revert to Debtor.  Upon any such  termination,  Secured  Party will  execute and
deliver to Debtor such documents as Debtor shall reasonably  request to evidence
such termination.


                                  ARTICLE VIII

                                  MISCELLANEOUS

     SECTION 8.1 Notices.  Except as expressly permitted herein to the contrary,
all notices and other communications  provided for hereunder shall be in writing
(including   communication  by  telecopier)  and  mailed  (postage  prepaid,  by
registered or certified  mail,  return  receipt  requested),  telecopied or hand
delivered:

if to Secured Party, at:

                      NationsBanc Leasing Corporation of
                        North Carolina
                      101 South Tryon Street, NC1-002-38-20
                      Charlotte, North Carolina  28255
                      Attention:  Manager of Corporate Lease
                                  Administration
                      Telecopy:  (704) 386-0892




                                 Page 61 of 200
<PAGE>



or if to Debtor, at:

                      Seitel Geophysical, Inc.
                      50 Briar Hollow Lane, 7th Floor-West
                      Houston, Texas  77027
                      Attention:  Debra D. Valice
                      Telecopy:  (713) 627-1114

or, as to each party, at such other address as shall be designated by such party
in a written  notice to the other  party.  All such  notices and  communications
shall be effective (a) five (5) days after such have been  deposited in the mail
or (b)  immediately  (i)  after  such have been  telecopied  to the  appropriate
telecopy  number and (ii) after such have been hand delivered to the appropriate
address.

     SECTION  8.2 Risk of  Loss.  Debtor  shall  bear all risk of any loss of or
damage to the  Collateral and in no event shall Secured Party be liable for such
loss or damage.

     SECTION 8.3 Powers and Agencies.  Whenever in this Agreement  Secured Party
is Granted the power of attorney or is appointed the agent and  attorney-in-fact
with respect to any Person, such Grant or appointment is irrevocable and coupled
with an  interest.  Secured  Party  shall  have full power of  substitution  and
delegation in respect of all such Grants and appointment.

     SECTION  8.4 Entire  Agreement.  The Notes,  this  Agreement  and the other
Security  Instruments  embody the  entire  agreement  between  the  parties  and
supersede  all prior  agreements  and  understandings,  if any,  relating to the
subject matter hereof.

     SECTION 8.5 Lawful Interest.  No provision in the Notes,  this Agreement or
any  Security  Instrument  or other  document  in favor of Secured  Party  shall
require or permit the  collection  of interest  in excess of the maximum  lawful
rate which Debtor may contract for, stipulate or agree to pay as determined by a
court  of  competent  jurisdiction  over  the  holder  of the  Notes or any such
document.  In determining  whether or not the interest paid or payable under any
specific  contingency exceeds such maximum lawful rate, Debtor and Secured Party
shall,  to the full extent  permitted by applicable law,  prorate,  allocate and
spread,  in equal  parts,  the total  amount of interest  throughout  the entire
contemplated  term of the Notes or other  document,  as the case may be, so that
the  interest  rate is uniform  throughout  the entire term of the Notes or such
document.  If it is so  determined  that any  interest in excess of such maximum



                                 Page 62 of 200
<PAGE>



lawful rate is provided  for,  such excess  shall be applied  first to any other
amounts  not  constituting  interest  due or which may become due and payable to
Debtor under the Notes or any of such other documents,  and the balance, if any,
shall be refunded to Debtor; provided, however, that in no event shall Debtor be
obligated to pay,  and Secured  Party  hereby  waives  payment of, the amount of
interest  to the extent it is in excess of the amount  permitted  by  applicable
law.  SECTION  8.6  Survival;  Severability.  If  any  word,  phrase,  sentence,
paragraph,  provision  or  section  of this  Agreement,  the  Notes or any other
Security  Instrument  shall be held,  declared  or  pronounced  void,  voidable,
invalid,  unenforceable  or inoperative for any reason by any court of competent
jurisdiction,  governmental authority or otherwise, such holding, declaration or
pronouncement  shall not  adversely  affect any other  word,  phrase,  sentence,
paragraph,  provision  or  section  of this  Agreement,  the  Notes or any other
Security  Instrument,  which shall otherwise remain in full force and effect and
be enforced in accordance with their  respective  terms,  and the effect of such
holding,  declaration or pronouncement  shall be limited to the territory or the
jurisdiction  in  which  made.  All  agreements,   covenants,   representations,
warranties  and  conditions  contained in this Agreement or made pursuant to the
provisions  hereof shall survive the  execution  and delivery of this  Agreement
until the Secured  Obligations  shall have been paid and performed in full.  All
statements by Debtor contained in any certificate or other instrument  delivered
pursuant to the provisions of this  Agreement or any other  Security  Instrument
shall constitute the representations and warranties of Debtor.

     SECTION 8.7 Binding Effect.  This Agreement shall be binding upon and inure
to the benefit of Debtor and Secured Party and their  respective  successors and
assigns,  except  that  Debtor  shall not have the right to  assign  its  rights
hereunder of any interest  herein  without the prior written  consent of Secured
Party.  Secured  Party may  assign all or any part of, or any  interest  in, its
rights and benefits  hereunder,  under the Notes and any Security  Instrument as
permitted  under  Section  7.5  hereof,  and to the  extent  of  such  permitted
assignment  each such assignee  shall have the same rights and benefits  against
Debtor as it would have had if it were Secured Party hereunder.

     SECTION 8.8 Amendment  and Waiver.  No amendment or waiver of any provision
of the  Notes,  this  Agreement  or any of the other  Security  Instruments,  or
consent to any  departure by Debtor  therefrom,  shall in any event be effective
unless the same shall be in writing and signed by Secured Party and Debtor,  and
such waiver and consent shall be effective only in the specific instance and for
the specific purpose for which given. No failure on the part of Secured Party to
exercise, and no delay in exercising,  any right under the Notes, this Agreement
or any of the other Security  Instruments shall operate as a waiver thereof; nor
shall any single or partial  exercise of any right under any such  instrument or
agreement  preclude any other or further exercise thereof or the exercise of any
other right.

     SECTION 8.9  Headings;  Execution in  Counterpart.  The section and article
headings  herein are for  convenience of reference  only, and shall not limit or
otherwise  affect the meaning of any  provision  herein.  This  Agreement may be



                                 Page 63 of 200
<PAGE>



executed in counterparts, each of which shall constitute an original, but all of
which together shall constitute one and the same Agreement.

     SECTION 8.10 Transaction  Costs.  Debtor shall pay all reasonable costs and
out-of-pocket expenses of Secured Party incurred in connection with preparation,
negotiation,  execution,  modification  and/or  enforcement  of the Notes,  this
Agreement,  the other Security Instruments  including without limitation (a) the
reasonable  legal fees and expenses of Moore & Van Allen,  PLLC,  (b) all filing
and registration costs, (c) all fees and disbursements incurred by Secured Party
in connection with the custody,  preservation,  use or operation of, or the sale
of, collection from, or other  realization upon, any of the Collateral,  and (d)
all fees and  disbursements  incurred by Secured  Party in  connection  with the
failure by Debtor to perform or observe any of the provisions hereof.

     SECTION 8.11 APPLICABLE LAW; CONSENT TO JURISDICTION  AND VENUE;  WAIVER OF
JURY TRIAL. THIS AGREEMENT, THE NOTES AND THE OTHER SECURITY INSTRUMENTS AND ALL
MATTERS  RELATING  THERETO  SHALL,  EXCEPT TO THE EXTENT  OTHERWISE  REQUIRED BY
APPLICABLE  LAW, BE GOVERNED BY AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH
THE LAWS OF THE  STATE OF NORTH  CAROLINA  WITHOUT  REGARD TO  CONFLICT  OF LAWS
PRINCIPLES. DEBTOR HEREBY SUBMITS TO THE JURISDICTION AND VENUE OF THE STATE AND
FEDERAL  COURTS OF  MECKLENBURG  COUNTY,  NORTH CAROLINA AND AGREES THAT SECURED
PARTY MAY, AT ITS OPTION,  ENFORCE ITS RIGHTS  HEREUNDER AND UNDER THE NOTES AND
OTHER SECURITY INSTRUMENTS IN SUCH COURTS.  DEBTOR HEREBY IRREVOCABLY WAIVES THE
DEFENSE OF AN  INCONVENIENT  FORUM TO MAINTENANCE OF ANY ACTION OR PROCEEDING BY
SECURED  PARTY IN SUCH COURTS.  DEBTOR  HEREBY  IRREVOCABLY  WAIVES ALL RIGHT TO
TRIAL  BY JURY IN ANY  ACTION,  PROCEEDING  OR  COUNTERCLAIM  ARISING  OUT OF OR
RELATING TO THIS AGREEMENT, THE NOTES OR ANY OTHER SECURITY INSTRUMENT OR ANY OF
THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY.

     SECTION  8.12  Break-Funding  Costs.  Upon any  early  termination  of this
Agreement  and/or any early  prepayment of the Notes for any reason which is not
expressly permitted under the Notes, Debtor shall promptly pay Secured Party (in
addition to all other  amounts due and owing  hereunder)  an amount equal to the
Break-Funding  Costs  incurred by Secured  Party,  as such are (a) determined by
Secured  Party at such time in its  reasonable  discretion  and (b) specified in
writing to Debtor.

     SECTION 8.13  Intention of the Parties.  It is the intention of the parties
to this Agreement that the Equipment be and remain personal property,  and at no
time (so long as any of the Secured  Obligations remain  outstanding) shall such
Equipment  be  attached,  affixed or  otherwise  become a part of any vehicle or
vessel.  Further,  each of the parties hereto agree that it is their intent that
the  provisions  of the UCC govern the  creation  and  perfection  of a security
interest in the Collateral.


                                 Page 64 of 200
<PAGE>




         IN WITNESS WHEREOF, Debtor and Secured Party have caused this Agreement
to be executed by their respective  officers thereunto duly authorized as of the
date first above written.


                                            SEITEL GEOPHYSICAL, INC., as Debtor

                                            By: /s/ Horace A. Calvert
                                               ---------------------------------
                                            Name: Horace A. Calvert
                                                 -------------------------------
                                            Title: Executive Vice President
                                                  ------------------------------




                                             NATIONSBANC LEASING CORPORATION OF
                                             NORTH CAROLINA, as Secured Party

                                             By: /s/ George L. Robinson, Jr.
                                                --------------------------------
                                             Name: George L. Robinson, Jr.
                                                  ------------------------------
                                             Title: Senior Vice President
                                                   -----------------------------





                                 Page 65 of 200
<PAGE>



                                 SCHEDULE 1.3(a)
                                 ---------------

                               SECURED TERM NOTE A
                                Due July 12, 2001


$5,902,372.00                                                      July 12, 1996


         FOR  VALUE  RECEIVED,  the  undersigned  SEITEL  GEOPHYSICAL,  INC.,  a
Delaware  corporation  ("Debtor")  HEREBY  PROMISES  TO  PAY  to  the  order  of
NATIONSBANC LEASING CORPORATION OF NORTH CAROLINA,  a North Carolina corporation
("Secured  Party"),  the principal sum of FIVE MILLION NINE HUNDRED TWO THOUSAND
THREE HUNDRED AND SEVENTY-TWO  DOLLARS  ($5,902,372.00)  (the "Original Amount")
pursuant to the terms and conditions of that certain Loan and Security Agreement
dated as of the date  hereof  between  the  Debtor  and the  Secured  Party,  as
amended,  modified  or replaced  from time to time (as so  amended,  modified or
replaced, the "Agreement" - all the terms, conditions, definitions and covenants
of such  Agreement are expressly  made a part hereof in the same manner and with
the same  effect as if set forth  herein at length,  any holder of this  Secured
Term Note A (the "Note")  being  entitled to the benefits and remedies  provided
for in the Agreement).

         The Bank has made a term loan to the  Borrower  as  provided in Section
1.3(a) of the Loan Agreement.  The outstanding principal balance hereof shall be
due  and   payable  as  provided  in  Section   1.3(a)(i)   of  the   Agreement.
Notwithstanding  the foregoing,  the final payment made on this Note shall be an
amount  sufficient  to  discharge  in full the  unpaid  Original  Amount and all
accrued and unpaid  interest  on, and any other  amounts due under this Note and
under the Agreement.

         This Note shall bear interest on the outstanding  balance  hereof,  and
such interest shall be payable  hereunder,  as provided in Section 1.3(a)(i) and
(a)(ii) of the Agreement.

         In the event the amounts owing under this Note shall be  accelerated in
accordance  with the terms of the Agreement,  the amounts owing  hereunder shall
become  immediately due and payable  without  presentation,  demand,  protest or
notice of any kind, all of which are hereby expressly  waived.  Further,  in the
event amounts owing  hereunder  are not paid when due  (including  any stated or
accelerated  maturity),  the  Debtor  agrees to pay  promptly  upon  demand,  in
addition to principal,  interest and other amounts owing hereunder, all costs of
collection, including reasonable attorneys' fees.

         All payments shall be payable, in lawful money of the United States and
in immediately available funds without setoff or counterclaim,  to Secured Party

                                 Page 66 of 200
<PAGE>



at its office at  NationsBank  Plaza,  101 South  Tryon  Street,  NC1-002-38-20,
Charlotte,  North  Carolina  28255 or such other  address as the holder  thereof
shall notify Debtor in writing.

         In determining  whether or not the interest paid or payable,  under any
specific  contingency,  exceeds the maximum lawful rate permitted by law, Debtor
and Secured Party shall, to the full extent permitted by applicable law, exclude
voluntary prepayment and the effects thereof and amortize, prorate, allocate and
spread,  in equal  parts,  the total  amount of interest  throughout  the entire
contemplated  term of this Note so that the interest rate is uniform  throughout
the entire term of this Note. If it is so determined that any interest in excess
of such maximum  lawful rate is provided  for, then such excess shall be applied
first to any other amounts not constituting interest due or which may become due
under this Note or the Agreement and the balance,  if any,  shall be refunded to
Debtor;  provided,  however,  that in no event shall Debtor be obligated to pay,
and Secured Party hereby waives payment of, the amount of interest to the extent
it is in excess of the amount  permitted by applicable law. No provision in this
Note or the  Agreement  shall  require or permit the  collection  of interest in
excess of the maximum lawful rate.

         This Note may be  prepaid  by the  Debtor in  accordance  with  Section
1.3(c) of the  Agreement  only if all amounts  owing with  respect to this Note,
Agreement  and the  other  Security  Instruments  are  paid in full.  Except  as
otherwise  provided  for  herein  and in the  Agreement,  this Note shall not be
subject to prepayment.

         THIS NOTE, THE AGREEMENT AND THE SECURITY  INSTRUMENTS  AND ALL MATTERS
RELATING THERETO SHALL,  EXCEPT TO THE EXTENT  OTHERWISE  REQUIRED BY APPLICABLE
LAW, BE GOVERNED BY AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH THE LAWS OF
THE STATE OF NORTH  CAROLINA  WITHOUT  REGARD TO  CONFLICT  OF LAWS  PRINCIPLES.
DEBTOR  HEREBY  SUBMITS TO THE  JURISDICTION  AND VENUE OF THE STATE AND FEDERAL
COURTS OF NORTH  CAROLINA AND AGREES THAT THE SECURED  PARTY MAY, AT ITS OPTION,
ENFORCE ITS RIGHTS  HEREUNDER  AND UNDER THE  AGREEMENT  AND THE OTHER  SECURITY
INSTRUMENTS IN SUCH COURTS.  DEBTOR HEREBY  IRREVOCABLY WAIVES THE DEFENSE OF AN
INCONVENIENT  FORUM TO  MAINTENANCE OF ANY ACTION OR PROCEEDING BY SECURED PARTY
IN SUCH COURTS.  DEBTOR HEREBY  IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN
ANY ACTION,  PROCEEDING OR COUNTERCLAIM ARISING OUT OF OR RELATING TO THIS NOTE,
THE  AGREEMENT  OR ANY  OTHER  SECURITY  INSTRUMENT  OR ANY OF THE  TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY.


                                 Page 67 of 200
<PAGE>

         IN WITNESS  WHEREOF,  the Debtor has caused this Note to be executed as
of the date appearing above.


                                             SEITEL GEOPHYSICAL, INC.

                                             By:
                                                --------------------------------

                                             Name (Printed):
                                                            --------------------

                                             Title:
                                                   -----------------------------



                                 Page 68 of 200
<PAGE>

                                 SCHEDULE 1.3(b)
                                 ---------------

                               SECURED TERM NOTE B
                               Due August 31, 1999


$1,361,839.13                                                      July 12, 1996


         FOR  VALUE  RECEIVED,  the  undersigned  SEITEL  GEOPHYSICAL,  INC.,  a
Delaware  corporation  ("Debtor")  HEREBY  PROMISES  TO  PAY  to  the  order  of
NATIONSBANC LEASING CORPORATION OF NORTH CAROLINA,  a North Carolina corporation
("Secured  Party"),  the principal  sum of ONE MILLION  THREE HUNDRED  SIXTY-ONE
THOUSAND  EIGHT HUNDRED  THIRTY-NINE  AND 13/100  DOLLARS  ($1,361,839.13)  (the
"Original Amount") pursuant to the terms and conditions of that certain Loan and
Security  Agreement  dated as of the date  hereof  between  the  Debtor  and the
Secured  Party,  as  amended,  modified  or  replaced  from  time to time (as so
amended,  modified or replaced,  the  "Agreement"  - all the terms,  conditions,
definitions  and covenants of such Agreement are expressly made a part hereof in
the same manner and with the same effect as if set forth  herein at length,  any
holder of this Secured Term Note B (the "Note")  being  entitled to the benefits
and remedies provided for in the Agreement).

         The Bank has made a term loan to the  Borrower  as  provided in Section
1.3(b) of the Loan Agreement.  The outstanding principal balance hereof shall be
due  and  payable  as  provided  in  Section   1.3(b)(ii)   of  the   Agreement.
Notwithstanding  the foregoing,  the final payment made on this Note shall be an
amount  sufficient  to  discharge  in full the  unpaid  Original  Amount and all
accrued and unpaid  interest  on, and any other  amounts due under this Note and
under the Agreement.

         This Note shall bear interest on the outstanding  balance  hereof,  and
such interest shall be payable hereunder,  as provided in Section 1.3(b)(ii) and
(b)(iii) of the Agreement.

         In the event the amounts owing under this Note shall be  accelerated in
accordance  with the terms of the Agreement,  the amounts owing  hereunder shall
become  immediately due and payable  without  presentation,  demand,  protest or
notice of any kind, all of which are hereby expressly  waived.  Further,  in the
event amounts owing  hereunder  are not paid when due  (including  any stated or
accelerated  maturity),  the  Debtor  agrees to pay  promptly  upon  demand,  in
addition to principal,  interest and other amounts owing hereunder, all costs of
collection, including reasonable attorneys' fees.


                                 Page 69 of 200
<PAGE>

         All payments shall be payable, in lawful money of the United States and
in immediately available funds without setoff or counterclaim,  to Secured Party
at its office at  NationsBank  Plaza,  101 South  Tryon  Street,  NC1-002-38-20,
Charlotte,  North  Carolina  28255 or such other  address as the holder  thereof
shall notify Debtor in writing.

         In determining  whether or not the interest paid or payable,  under any
specific  contingency,  exceeds the maximum lawful rate permitted by law, Debtor
and Secured Party shall, to the full extent permitted by applicable law, exclude
voluntary prepayment and the effects thereof and amortize, prorate, allocate and
spread,  in equal  parts,  the total  amount of interest  throughout  the entire
contemplated  term of this Note so that the interest rate is uniform  throughout
the entire term of this Note. If it is so determined that any interest in excess
of such maximum  lawful rate is provided  for, then such excess shall be applied
first to any other amounts not constituting interest due or which may become due
under this Note or the Agreement and the balance,  if any,  shall be refunded to
Debtor;  provided,  however,  that in no event shall Debtor be obligated to pay,
and Secured Party hereby waives payment of, the amount of interest to the extent
it is in excess of the amount  permitted by applicable law. No provision in this
Note or the  Agreement  shall  require or permit the  collection  of interest in
excess of the maximum lawful rate.

         This Note may be  prepaid  by the  Debtor in  accordance  with  Section
1.3(c) of the Agreement only if all amounts owing with respect to this Note, the
Agreement  and the  other  Security  Instruments  are  paid in full.  Except  as
otherwise  provided  for  herein  and in the  Agreement,  this Note shall not be
subject to prepayment.

         THIS NOTE, THE AGREEMENT AND THE SECURITY  INSTRUMENTS  AND ALL MATTERS
RELATING THERETO SHALL,  EXCEPT TO THE EXTENT  OTHERWISE  REQUIRED BY APPLICABLE
LAW, BE GOVERNED BY AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH THE LAWS OF
THE STATE OF NORTH  CAROLINA  WITHOUT  REGARD TO  CONFLICT  OF LAWS  PRINCIPLES.
DEBTOR  HEREBY  SUBMITS TO THE  JURISDICTION  AND VENUE OF THE STATE AND FEDERAL
COURTS OF NORTH  CAROLINA AND AGREES THAT THE SECURED  PARTY MAY, AT ITS OPTION,
ENFORCE ITS RIGHTS  HEREUNDER  AND UNDER THE  AGREEMENT  AND THE OTHER  SECURITY
INSTRUMENTS IN SUCH COURTS.  DEBTOR HEREBY  IRREVOCABLY WAIVES THE DEFENSE OF AN
INCONVENIENT  FORUM TO  MAINTENANCE OF ANY ACTION OR PROCEEDING BY SECURED PARTY
IN SUCH COURTS.  DEBTOR HEREBY  IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN
ANY ACTION,  PROCEEDING OR COUNTERCLAIM ARISING OUT OF OR RELATING TO THIS NOTE,
THE  AGREEMENT  OR ANY  OTHER  SECURITY  INSTRUMENT  OR ANY OF THE  TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY.


                                 Page 70 of 200
<PAGE>

         IN WITNESS  WHEREOF,  the Debtor has caused this Note to be executed as
of the date appearing above.


                                            SEITEL GEOPHYSICAL, INC.

                                            By:
                                               ---------------------------------

                                            Name (Printed):
                                                           ---------------------

                                            Title:
                                                  ------------------------------


                                 Page 71 of 200
<PAGE>

                               SCHEDULE 1.3(b)(i)
                               ------------------

                               NOTICE OF BORROWING



NationsBanc Leasing Corporation of
  North Carolina
101 South Tryon Street, NC1-002-38-20
Charlotte, North Carolina 28255
Attn:  Manager of Corporate Lease Administration
Facsimile No.: (704) 386-0892

Re:  Notice of Borrowing under Loan and Security  Agreement dated as of July   ,
                                                                            ---
     1996 (the "Loan Agreement") between Seitel Geophysical, Inc. ("Debtor") and
     NationsBanc Leasing Corporation of North Carolina ("Secured Party")

Dear Sir:

The Debtor hereby requests an advance under the above-referenced  Loan Agreement
in accordance with the following information:

         1.       Debtor:
                         ----------------------------------

         2.       Date of Requested Advance:
                                            ---------------

         3.       Amount of Requested Advance:
                                              -------------

         4.       Bill of Sale Supporting Requested Advance:  See Attached Rider

The Debtor  hereby  certifies  that as of the date hereof no Default or Event of
Default  currently  exists under the Loan  Agreement  and no Default or Event of
Default shall exist as a result of the making of the Requested Advance.

                                                Sincerely,

                                                [DEBTOR]


                                 Page 72 of 200

                                  EXHIBIT 10.5

                           REVOLVING CREDIT AGREEMENT

                                     among

                                 SEITEL, INC.,

                           THE LENDERS PARTY HERETO,

                                      and

                       THE FIRST NATIONAL BANK OF CHICAGO

                                    as Agent




                                  dated as of

                                 JULY 22, 1996



                                 Page 73 of 200
<PAGE>



                                TABLE OF CONTENTS

ARTICLE I      DEFINITIONS................................................... 1

ARTICLE II     THE CREDITS.................................................. 18

     2.1.      Commitment................................................... 18
     2.2.      Facility Amount.............................................. 18
     2.3.      Termination ................................................. 18
     2.4.      Ratable Advances............................................. 18
     2.4.1.    Ratable Loans................................................ 18
     2.4.2.    Ratable Advance Rate Options................................. 19
     2.4.3.    Method of Selecting Types and Interest Periods
                    for New Ratable Advances................................ 19
     2.4.4.    Conversion and Continuation of Outstanding Ratable
                    Advances................................................ 19
     2.5.1.    Competitive Bid Option....................................... 20
     2.5.2.    Competitive Bid Quote Request................................ 20
     2.5.3.    Invitation for Competitive Bid Quotes........................ 21
     2.5.4.    Submission and Contents of Competitive Bid Quotes............ 21
     2.5.5.    Notice to Borrower........................................... 22
     2.5.6.    Acceptance and Notice by Borrower............................ 22
     2.5.7.    Allocation by Agent.......................................... 23
     2.5.8.    Competitive Bid Auction Fees................................. 23
     2.6.      Commitment Fee; Voluntary and Mandatory Reductions
                    in Aggregate Commitment................................. 23
     2.7.      Minimum Amount of Each Advance............................... 24
     2.8.      Optional Principal Payments.................................. 24
     2.9.      Changes in Interest Rate, etc................................ 24
     2.10.     Rates Applicable After Default............................... 25
     2.11.     Method of Payment............................................ 25
     2.12.     Notes; Telephonic Notices.................................... 25
     2.13.     Interest Payment Dates; Interest and Fee Basis............... 26
     2.14.     Notification of Advances, Interest Rates, Prepayments
                    and Commitment Reductions............................... 26
     2.15.     Lending Installations........................................ 26
     2.16.     Non-Receipt of Funds by the Agent............................ 26
     2.17.     Optional Increase in the Aggregate Commitment................ 27

                                       i


                                 Page 74 of 200
<PAGE>



ARTICLE III    CHANGE IN CIRCUMSTANCES...................................... 29
     3.1.      Yield Protection............................................. 29
     3.2.      Changes in Capital Adequacy Regulations...................... 30
     3.3.      Availability of Types of Advances............................ 30
     3.4.      Funding Indemnification...................................... 30
     3.5.      Lender Statements; Survival of Indemnity..................... 31

ARTICLE IV     CONDITIONS PRECEDENT; WITHHOLDING TAX EXEMPTION.............. 31
     4.1.      Initial Advance.............................................. 31
     4.2.      Each Advance................................................. 33
     4.3.      Withholding Tax Exemption.................................... 33
     4.4.      Replacement of Lenders....................................... 34

ARTICLE V      REPRESENTATIONS AND WARRANTIES............................... 34
     5.1.      Organization; Power and Authority............................ 34
     5.2.      Authorization and Validity................................... 35
     5.3.      Accuracy of Information...................................... 35
     5.4.      Organization and Ownership of Shares of Restricted
                    Subsidiaries; Affiliates. .............................. 35
     5.5.      Financial Statements......................................... 36
     5.6.      Material Adverse Change...................................... 36
     5.7       No Conflict or Violation..................................... 36
     5.8.      Governmental Authorizations.................................. 37
     5.9.      Litigation; Observance of Agreements, Statutes
                    and Orders.............................................. 37
     5.10.     Taxes. ...................................................... 37
     5.11.     Title to Property; Leases.................................... 37
     5.12.     Licenses, Permits, etc....................................... 38
     5.13.     Compliance with ERISA........................................ 38
     5.14.     Margin Regulations........................................... 39
     5.15.     Existing Debt; Future Liens.................................. 39
     5.16.     Status under Certain Statutes................................ 40
     5.17.     Environmental Matters........................................ 40

                                       ii


                                 Page 75 of 200
<PAGE>



ARTICLE VI     COVENANTS.................................................... 41
     6.1.      Financial Reporting.......................................... 41
     6.2.      Officer's Certificate........................................ 45
     6.3.      Use of Proceeds.............................................. 46
     6.4.      Corporate or Partnership Existence; Conduct
                    of Business............................................. 46
     6.5.      Pari Passu. ................................................. 46
     6.6.      Subsidiary Guaranty. ........................................ 46
     6.7.      Payment of Taxes and Claims.................................. 47
     6.8.      Insurance.................................................... 47
     6.9.      Compliance with Laws......................................... 47
     6.10.     Maintenance of Properties.................................... 47
     6.11.     Inspection................................................... 48
     6.12.     Restricted Payments and Restricted Investments............... 48
     6.13.     Merger and Consolidation..................................... 49
     6.14.     Sale of Assets............................................... 50
     6.15.     Liens........................................................ 53
     6.16.     Limitations on Certain Restricted Subsidiary
                    Actions................................................. 55
     6.17.     Affiliate Transactions....................................... 56
     6.18.     Net Worth.................................................... 56
     6.19.     Interest Coverage............................................ 56
     6.20.     Debt Incurrence. ............................................ 57

ARTICLE VII    DEFAULTS..................................................... 57

ARTICLE VIII   ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES............... 60
     8.1.      Acceleration................................................. 60
     8.2.      Amendments................................................... 60
     8.3.      Preservation of Rights....................................... 61

ARTICLE IX     GENERAL PROVISIONS........................................... 61
     9.1.      Survival of Representations.................................. 61
     9.2.      Governmental Regulation...................................... 61
     9.3.      Taxes........................................................ 61
     9.4.      Headings..................................................... 61
     9.5.      Entire Agreement............................................. 61
     9.6.      Several Obligations; Benefits of this Agreement.............. 62
     9.7.      Expenses; Indemnification.................................... 62
     9.8.      Numbers of Documents......................................... 62
     9.9.      Accounting................................................... 62
     9.10.     Severability of Provisions................................... 62
     9.11.     Nonliability of Lenders...................................... 63
     9.12.     Confidentiality.............................................. 63
     9.13.     Nonreliance.................................................. 63
     9.14.     Maximum Rate................................................. 63
     9.15.     ERISA Representation by Lenders. ............................ 64

                                      iii


                                 Page 76 of 200
<PAGE>

ARTICLE X  THE AGENT........................................................ 64
     10.1.     Appointment; Nature of Relationship.......................... 64
     10.2.     Powers....................................................... 65
     10.3.     General Immunity............................................. 65
     10.4.     No Responsibility for Loans, Recitals, etc................... 65
     10.5.     Action on Instructions of Lenders............................ 65
     10.6.     Employment of Agents and Counsel............................. 65
     10.7.     Reliance on Documents; Counsel............................... 66
     10.8.     Agent's Reimbursement and Indemnification.................... 66
     10.9.     Notice of Default............................................ 66
     10.10.    Rights as a Lender........................................... 66
     10.11.    Lender Credit Decision....................................... 67
     10.12.    Successor Agent.............................................. 67
     10.13.    Agent's Fee.................................................. 67

ARTICLE XI     SETOFF; RATABLE PAYMENTS..................................... 68
     11.1.     Setoff....................................................... 68
     11.2.     Ratable Payments............................................. 68

ARTICLE XII    BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS............ 68
     12.1.     Successors and Assigns....................................... 68
     12.2.     Participations............................................... 69
     12.2.1.   Permitted Participants; Effect............................... 69
     12.2.2.   Voting Rights................................................ 69
     12.2.3.   Benefit of Setoff............................................ 69
     12.3.     Assignments.................................................. 70
     12.3.1.   Permitted Assignments........................................ 70
     12.3.2.   Effect; Effective Date....................................... 70
     12.4.     Dissemination of Information................................. 70
     12.5.     Tax Treatment................................................ 71

ARTICLE XIII   NOTICES...................................................... 71
     13.1.     Notices...................................................... 71
     13.2.     Change of Address............................................ 71

ARTICLE XIV    COUNTERPARTS................................................. 71

                                       iv


                                 Page 77 of 200
<PAGE>

ARTICLE XV     CHOICE OF LAW, CONSENT TO JURISDICTION, WAIVER
                    OF JURY TRIAL........................................... 72
     15.1.     CHOICE OF LAW................................................ 72
     15.2.     CONSENT TO JURISDICTION...................................... 72
     15.3.     WAIVER OF JURY TRIAL......................................... 72

EXHIBIT "A"    RATABLE NOTE................................................. 75

EXHIBIT "B"    COMPETITIVE BID NOTE......................................... 77

EXHIBIT "C"    COMPETITIVE BID QUOTE REQUEST................................ 79

EXHIBIT "D"    INVITATION FOR COMPETITIVE BID QUOTES........................ 80

EXHIBIT "E"    COMPETITIVE BID QUOTE........................................ 81

EXHIBIT "F"    FORM OF OPINION.............................................. 83

EXHIBIT "G"    COMPLIANCE CERTIFICATE....................................... 89

SCHEDULE I TO COMPLIANCE CERTIFICATE........................................ 91

SCHEDULE II TO COMPLIANCE CERTIFICATE
         Rate Determination................................................. 92

SCHEDULE III TO COMPLIANCE CERTIFICATE
         Reports and Deliveries............................................. 93

EXHIBIT "H"    ASSIGNMENT AGREEMENT......................................... 94

SCHEDULE 1 to Assignment Agreement.......................................... 99

EXHIBIT "I"    LOAN/CREDIT RELATED MONEY TRANSFER INSTRUCTION.............. 103

EXHIBIT "J"    FORM OF SUBSIDIARY GUARANTY................................. 104

ANNEX I [FORM OF JOINDER AGREEMENT]........................................ 114

EXHIBIT "K"    FORM OF OPINION TO ACCOMPANY JOINDER AGREEMENT.............. 116

EXHIBIT "L"    FORM OF LENDER ASSUMPTION AGREEMENT......................... 121

SCHEDULES.................................................................. 124


                                        iv

                                 Page 78 of 200
<PAGE>

                     SEITEL, INC. REVOLVING CREDIT AGREEMENT


         This  Agreement,  dated as of July 22, 1996, is among  Seitel,  Inc., a
Delaware  corporation,  the Lenders and The First  National Bank of Chicago,  as
Agent. The parties hereto agree as follows:



                                    ARTICLE I

                                   DEFINITIONS
                                   -----------

         As used in this Agreement:

         "Absolute Rate" means,  with respect to an Absolute Rate Loan made by a
given  Lender  for the  relevant  Absolute  Rate  Interest  Period,  the rate of
interest per annum  (rounded to the nearest  1/100 of 1%) offered by such Lender
and accepted by the Borrower.

         "Absolute Rate Advance" means a borrowing  hereunder  consisting of the
aggregate  amount of the several  Absolute Rate Loans made by some or all of the
Lenders to the Borrower at the same time and for the same Absolute Rate Interest
Period.

         "Absolute Rate Auction" means a solicitation  of Competitive Bid Quotes
setting forth Absolute Rates pursuant to Section 2.5.

         "Absolute Rate Interest Period" means, with respect to an Absolute Rate
Advance,  a period  of not less  than one and not more  than  twenty-nine  days,
commencing  on a  Business  Day  selected  by  the  Borrower  pursuant  to  this
Agreement. If such Absolute Rate Interest Period would end on a day which is not
a  Business  Day,  such  Absolute  Rate  Interest  Period  shall end on the next
succeeding  Business Day, unless such next succeeding  Business Day is after the
Facility  Termination  Date, in which case such  Absolute  Rate Interest  Period
shall end on the next preceding Business Day.

         "Absolute  Rate Loan" means a Loan which bears interest at the Absolute
Rate.

         "Acceptable  Bank"  means  any  bank or  trust  company  (y)  which  is
organized  under the laws of the United  States of America or any State  thereof
and (z) which has capital,  surplus and undivided  profits  aggregating at least
Five Hundred Million Dollars ($500,000,000).

         "Acquisition"   means  any  transaction,   or  any  series  of  related
transactions,  consummated on or after the date of this Agreement,  by which the
Borrower or any of its  Subsidiaries  (i) acquires any going  business or all or
substantially  all of the assets of any firm,  corporation or limited  liability
company,  or division  thereof,  whether through  purchase of assets,  merger or
otherwise or (ii) directly or indirectly  acquires (in one transaction or as the



                                 Page 79 of 200
<PAGE>



most recent  transaction  in a series of  transactions)  at least a majority (in
number of votes) of the securities of a corporation  which have ordinary  voting
power for the election of  directors  (other than  securities  having such power
only by reason of the happening of a  contingency)  or a majority (by percentage
or voting power) of the  outstanding  ownership  interests of a  partnership  or
limited liability company.

         "Advance"  means a borrowing  hereunder (or conversion or  continuation
thereof) consisting of the aggregate amount of the several Loans made by some or
all of the  Lenders  to the  Borrower  on the  same  Borrowing  Date (or date of
conversion or  continuation),  at the same Rate Option and, in the case of Fixed
Rate Advances, for the same Interest Period.

         "Affiliate"  means,  at any time,  (i) with respect to any Person other
than the  Borrower,  any other Person that at such time  directly or  indirectly
through one or more  intermediaries  Controls,  or is Controlled by, or is under
common  Control  with,  such Person,  and (ii) with respect to the  Borrower,  a
Person (other than a Wholly-Owned Restricted Subsidiary),  (a) that at such time
directly  or  indirectly  through  one or more  intermediaries  Controls,  or is
Controlled by, or is under common  Control with, the Borrower,  (b) that at such
time  beneficially owns or holds,  directly or indirectly,  ten percent (10%) or
more of the Voting Stock of the  Borrower,  or (c) ten percent  (10%) or more of
the  Voting  Stock of which is at such  time  beneficially  owned or held by the
Borrower or any one or more of its Subsidiaries.

         "Agent"  means The First  National  Bank of Chicago in its  capacity as
agent for the Lenders pursuant to Article X, and not in its individual  capacity
as a Lender, and any successor Agent appointed pursuant to Article X.

         "Aggregate  Commitment"  means the aggregate of the  Commitments of all
the Lenders, as reduced from time to time pursuant to the terms hereof.

         "Agreement"  means  this  credit  agreement,  as it may be  amended  or
modified and in effect from time to time.

         "Agreement  Accounting  Principles" means generally accepted accounting
principles as in effect from time to time,  applied in a manner  consistent with
that used in preparing the financial statements referred to in Section 5.5.


                                 Page 80 of 200
<PAGE>

         "Alternate Base Rate" means,  for any day, a rate of interest per annum
equal to the higher of (i) the Corporate Base Rate for such day and (ii) the sum
of the Federal Funds Effective Rate for such day plus 1/2% per annum.

         "Applicable Commitment Fee" means (i) during any Level 1 Period, 0.225%
per annum,  (ii) during any Level 2 Period,  0.25% per annum,  (iii)  during any
Level 3 Period,  0.30% per annum and (iv) during any Level 4 Period,  0.375% per
annum,  provided that all adjustments to the Applicable  Commitment Fee shall be
effective  commencing  on the  fifth  Business  Day after  (x) the  delivery  of
financial  statements showing the required ratio for the applicable Level or (y)
the Agent  becomes  aware  that the  Borrower  or any  Subsidiary  has  incurred
additional  Indebtedness  which would affect the calculation of the Debt to Cash
Flow from  Operations  Ratio,  and  provided  further that in the event that the
Borrower shall at any time fail to furnish to the Agent the financial statements
required to be delivered  pursuant to Sections  6.1(a) and (b) or fail to notify
the  Agent,   pursuant  to  Section  6.1(j),  of  the  incurrence  of  any  such
Indebtedness,  the maximum Applicable Commitment Fee shall apply until such time
as such  financial  statements  are so delivered or the Agent is notified of the
incurrence of such Indebtedness, as the case may be.

         "Applicable  Margin"  means (i) during  any Level 1 Period,  0.625% per
annum with respect to  Eurodollar  Loans and 0.00% with respect to Floating Rate
Loans,  (ii)  during  any  Level 2  Period,  0.75% per  annum  with  respect  to
Eurodollar Loans and 0.00% with respect to Floating Rate Loans, (iii) during any
Level 3 Period,  1.0% per annum with respect to Eurodollar  Loans and 0.00% with


                                 Page 81 of 200
<PAGE>

respect to  Floating  Rate Loans and (iv)  during any Level 4 Period,  1.50% per
annum with respect to  Eurodollar  Loans and 0.50% with respect to Floating Rate
Loans, provided that all adjustments to the Applicable Margin shall be effective
commencing  on the  fifth  Business  Day  after (x) the  delivery  of  financial
statements  showing the required ratio for the applicable Level or (y) the Agent
becomes  aware that the  Borrower  or any  Subsidiary  has  incurred  additional
Indebtedness  which would affect the  calculation  of the Debt to Cash Flow from
Operations Ratio, and provided further that in the event that the Borrower shall
at any time fail to furnish to the Agent the financial statements required to be
delivered  pursuant  to  Sections  6.1(a)  and (b) or fail to notify  the Agent,
pursuant to Section  6.1(j),  of the  incurrence of any such  Indebtedness,  the
maximum  Applicable  Margin for such Type of Advance shall apply until such time
as such  financial  statements  are so delivered or the Agent is notified of the
incurrence of such Indebtedness, as the case may be.

         "Article" means an article of this Agreement unless another document is
specifically referenced.

         "Authorized  Officer"  means  any  of  the  President,  Executive  Vice
President,  Chief Financial Officer or Chief Accounting Officer of the Borrower,
acting singly.

         "Borrower"  means  Seitel,  Inc.,  a  Delaware  corporation,  and  its
permitted successors and assigns.

         "Borrowing Date" means a date on which an Advance is made hereunder.

         "Borrowing  Notice" means a Ratable Borrowing Notice, a Competitive Bid
Borrowing Notice, or both, as the context may require.

         "Business Day" means (i) with respect to any borrowing, payment or rate
selection  of  Eurodollar  Advances,  a day (other than a Saturday or Sunday) on
which  banks  generally  are open in  Chicago  and New York for the  conduct  of


                                 Page 82 of 200
<PAGE>

substantially all of their commercial  lending  activities and on which dealings
in United States dollars are carried on in the London  interbank market and (ii)
for all other  purposes,  a day (other than a Saturday or Sunday) on which banks
generally  are open in Chicago  for the  conduct of  substantially  all of their
commercial lending activities.

         "Capital  Lease" of a Person means any lease of Property by such Person
as lessee with respect to which the lessee is required concurrently to recognize
the acquisition of an asset and the incurrence of a liability in accordance with
Agreement Accounting Principles.

         "Capital  Lease  Obligations"  of a  Person  means  the  amount  of the
obligations  of such  Person  under  Capital  Leases  which  would be shown as a
liability  on a  balance  sheet  of such  Person  prepared  in  accordance  with
Agreement Accounting Principles.

         "Change in Control" means the acquisition by any Person, or two or more
Persons acting in concert,  of beneficial  ownership (within the meaning of Rule
13d-3 of the Securities and Exchange  Commission  under the Securities  Exchange
Act of 1934) of 30% or more of the  outstanding  shares of  voting  stock of the
Borrower.

         "Code" means the Internal Revenue Code of 1986, as amended, reformed or
otherwise modified from time to time.

         "Commitment"  means, for each Lender,  the obligation of such Lender to
make Ratable  Loans not  exceeding  the amount set forth  opposite its signature
below or as set forth in any Notice of  Assignment  relating  to any  assignment
that has become  effective  pursuant  to Section  12.3.2,  as such amount may be
modified from time to time pursuant to the terms hereof.

         "Competitive Bid Advance" means a borrowing hereunder consisting of the
aggregate amount of the several Competitive Bid Loans made by some or all of the
Lenders to the Borrower at the same time and for the same Interest Period.

         "Competitive Bid Borrowing Notice" is defined in Section 2.5.6.

         "Competitive Bid Loan" means an Absolute Rate Loan.

         "Competitive  Bid Note" means a promissory  note in  substantially  the
form of Exhibit "B" hereto,  with  appropriate  insertions,  duly  executed  and
delivered  to the Agent by the  Borrower for the account of a Lender and payable
to the order of such Lender, including any amendment,  modification,  renewal or
replacement of such promissory note.

         "Competitive Bid Quote" means a Competitive Bid Quote  substantially in
the form of Exhibit "E" hereto  completed and delivered by a Lender to the Agent
in accordance with Section 2.5.4.


                                 Page 83 of 200
<PAGE>

         "Competitive  Bid Quote Request" means a Competitive  Bid Quote Request
substantially  in the form of Exhibit "C" hereto  completed and delivered by the
Borrower to the Agent in accordance with Section 2.5.2.

         "Consolidated  Debt" means, as of any date of determination,  the total
of all Debt of the Borrower and the Restricted Subsidiaries  outstanding on such
date, after  eliminating all offsetting  debits and credits between the Borrower
and the Restricted Subsidiaries and all other items required to be eliminated in
the  course of the  preparation  of  consolidated  financial  statements  of the
Borrower and the Restricted  Subsidiaries  prepared in accordance with Agreement
Accounting Principles.

         "Consolidated  Interest Expense" means, with respect to any period, the
sum  (without  duplication)  of the  following  (in each case,  eliminating  all
offsetting   debits  and  credits   between  the  Borrower  and  the  Restricted
Subsidiaries  and all other items required to be eliminated in the course of the
preparation  of  consolidated  financial  statements  of the  Borrower  and  the
Restricted Subsidiaries in accordance with Agreement Accounting Principles): (i)
all interest in respect of Debt of the Borrower and the Restricted  Subsidiaries
(including   imputed  interest  on  Capital  Lease   Obligations)   deducted  in
determining  Consolidated Net Income for such period, and (ii) all debt discount
and expense  amortized  or  required to be  amortized  in the  determination  of
Consolidated Net Income for such period.

         "Consolidated Net Income" means, with reference to any period,  the net
income (or loss) of the Borrower and the Restricted Subsidiaries for such period
(taken as a cumulative  whole),  as  determined  in  accordance  with  Agreement
Accounting  Principles,  after  eliminating  all  offsetting  debits and credits
between  the  Borrower  and the  Restricted  Subsidiaries  and all  other  items
required  to be  eliminated  in the course of the  preparation  of  consolidated
financial  statements  of  the  Borrower  and  the  Restricted  Subsidiaries  in
accordance with Agreement  Accounting  Principles,  provided that there shall be
excluded:  (i) any gains  resulting from any write-up of any assets (but not any
loss resulting from any write-down of any assets),  (ii) the income (or loss) of
any Person  accrued  prior to the date it becomes a Restricted  Subsidiary or is
merged into or consolidated  with the Borrower or a Restricted  Subsidiary,  and
the income  (or loss) of any  Person,  substantially  all of the assets of which
have been acquired in any manner by the Borrower or any  Restricted  Subsidiary,
realized by such other  Person  prior to the date of  acquisition,  (iii) in the
case  of a  successor  to  the  Borrower  by  consolidation  or  merger  or as a
transferee  of its assets,  any earnings of the successor  corporation  prior to
such  consolidation,  merger or transfer of assets,  (iv) any aggregate net gain
(but not any  aggregate  net loss)  during  such period  arising  from the sale,
conversion,  exchange  or other  disposition  of  capital  assets  (such term to
include,   without   limitation,   (1)  all  non-current   assets  and,  without
duplication,  (2) the  following,  whether  or not  current:  all fixed  assets,


                                 Page 84 of 200
<PAGE>

whether  tangible or  intangible,  all inventory  sold in  conjunction  with the
disposition of fixed assets,  and all  securities),  (v) any portion of such net
income that cannot be freely  converted  into United  States  Dollars,  (vi) the
income (or loss) of any Person (other than a Restricted Subsidiary) in which the
Borrower or any Restricted  Subsidiary has an ownership interest,  except to the
extent that any such income has been  actually  received by the Borrower or such
Restricted   Subsidiary   in  the  form  of  cash   dividends  or  similar  cash
distributions,  (vii) any gain arising from the acquisition of any security,  or
the extinguishment,  under Agreement Accounting Principles,  of any Debt, of the
Borrower or any Restricted Subsidiary,  (viii) any net income or gain or any net
loss  during  such  period  from (1) any  change  in  accounting  principles  in
accordance  with  Agreement  Accounting  Principles  or  (2)  any  prior  period
adjustments  resulting  from any change in  accounting  principles in accordance
with Agreement Accounting  Principles,  and (ix) any net income or gain (but not
any net loss)  during such period  from (1) any  extraordinary  items or (2) any
discontinued operations or the disposition thereof.

         "Consolidated  Net Worth" means,  at any time, the total  stockholders'
equity which would be shown in consolidated financial statements of the Borrower
and the  Restricted  Subsidiaries  prepared  at such  time  in  accordance  with
Agreement Accounting Principles.

         "Consolidated  Tangible Assets" means, at any time,  Consolidated Total
Assets at such time,  minus (i) deferred  assets,  other than  prepaid  expenses
which are refundable; (ii) patents, copyrights, trademarks, trade names, service
marks,  brand  names,  franchises,  goodwill,  experimental  expenses  and other
similar  intangibles;  (iii) unamortized debt discount and expense; and (iv) all
other  Property  which  would  be  classified  as  intangible   under  Agreement
Accounting Principles.

         "Consolidated Total Assets" means, at any time, the amount at which the
total assets of the Borrower and the Restricted  Subsidiaries  would be shown in
consolidated   financial   statements   of  the  Borrower  and  the   Restricted
Subsidiaries  prepared  at such time in  accordance  with  Agreement  Accounting
Principles, after deduction of depreciation, amortization and all other properly
deductible valuation reserves.

         "Control" means the possession, directly or indirectly, of the power to
direct  or cause the  direction  of the  management  and  policies  of a Person,
whether through the ownership of voting Securities, by contract or otherwise.

         "Controlled   Group"  means  all  members  of  a  controlled  group  of
corporations and all trades or businesses  (whether or not  incorporated)  under
common Control which, together with the Borrower or any of its Subsidiaries, are
treated as a single employer under Section 414 of the Code.

         "Conversion/Continuation Notice" is defined in Section 2.4.4.

         "Corporate  Base Rate"  means a rate per annum  equal to the  corporate
base rate of interest  announced by First  Chicago  from time to time,  changing
when and as said corporate base rate changes.

         "Debt" means, with respect to any Person, without duplication,  (i) its
obligations  for borrowed  money;  (ii) its  obligations  in respect of banker's
acceptances, other acceptances,  letters of credit and other instruments serving


                                 Page 85 of 200
<PAGE>

a similar function issued or accepted by banks and other financial  institutions
for the account of such Person  (whether or not incurred in connection  with the
borrowing of money);  (iii) its obligations that are evidenced by bonds,  notes,
debentures  or  similar  instruments;  (iv)  its  obligations  for the  deferred
purchase price of Property acquired by such Person  (excluding  accounts payable
arising in the ordinary  course of business but including,  without  limitation,
all  obligations  created or arising under any  conditional  sale or other title
retention  agreement with respect to any such  Property);  (v) its Capital Lease
Obligations;  (vi) its  obligations  in  respect of all  mandatorily  redeemable
preferred stock of such Person; (vii) its obligations for borrowed money secured
by any Lien with respect to any Property owned by such Person (whether or not it
has assumed or otherwise  become  liable for such  obligations);  and (viii) any
Guaranty of such Person with respect to  liabilities  of a type described in any
of clauses  (i)  through  (vii)  hereof.  Debt of any Person  shall  include all
obligations  of such Person of the  character  described  in clauses (i) through
(viii) to the extent  such  Person  remains  legally  liable in respect  thereof
notwithstanding  that any such  obligation  is deemed to be  extinguished  under
Agreement Accounting Principles.

         "Debt to Cash Flow from Operations Ratio" means, for any fiscal quarter
of the Borrower and its Restricted  Subsidiaries  on a consolidated  basis,  the
ratio of (i) Debt outstanding on the last day of such quarter to (ii) the sum of
(a) Consolidated Net Income for such quarter, plus (b) to the extent deducted in
determining  Consolidated Net Income, the amount of all depreciation,  depletion
and amortization  allowances of the Borrower and the Restricted Subsidiaries for
such quarter,  plus (c) to the extent deducted in determining  Consolidated  Net
Income,  deferred taxes of the Borrower and the Restricted Subsidiaries for such
quarter.

         "Default" means an event described in Article VII.

         "Designated Portion" is defined in Section 6.14.

         "Disposition Value" is defined in Section 6.14.

         "Distribution"  means,  in respect of any  corporation,  association or
other  business  entity:  (i)  dividends or other  distributions  or payments on
capital stock or other equity interest of such corporation, association or other
business entity (except  distributions in such stock or other equity  interest);
and (ii) the redemption or  acquisition of such stock or other equity  interests
or of warrants,  rights or other  options to purchase such stock or other equity
interests  (except  when  solely  in  exchange  for such  stock or other  equity
interests).

         "EBITDA" means, in respect of any period,  Consolidated  Net Income for
such  period  minus  (i)  to  the  extent  added  in  the  computation  of  such
Consolidated Net Income, each of the following:  (1) extraordinary gains, net of
extraordinary losses, and (2) gains, net of losses, arising from the disposition


                                 Page 86 of 200
<PAGE>

of Property  other than in the  ordinary  course of  business,  plus (ii) to the
extent deducted in the computation of such Consolidated Net Income,  each of the
following:  (1)  Consolidated  Interest  Expense,  net  of  interest  and  other
investment  income, (2) taxes imposed on or measured by income or excess profits
of  the  Borrower  and  the  Restricted  Subsidiaries,  (3)  the  amount  of all
depreciation,  depletion and amortization allowances and other non-cash expenses
of the Borrower and the Restricted  Subsidiaries,  (4) extraordinary losses, net
of  extraordinary  gains,  and  (5)  losses,  net of  gains,  arising  from  the
disposition of Property other than in the ordinary course of business.

         "Environmental  Laws"  means  any and all  federal,  state,  local  and
foreign statutes,  laws, judicial  decisions,  regulations,  ordinances,  rules,
judgments, orders, decrees, plans, injunctions,  permits,  concessions,  grants,
franchises, licenses, agreements and other governmental restrictions relating to
(i) the  protection of the  environment,  (ii) the effect of the  environment on
human  health,   (iii)   emissions,   discharges  or  releases  of   pollutants,
contaminants, hazardous substances or wastes into surface water, ground water or
land,  or  (iv)  the  manufacture,  processing,  distribution,  use,  treatment,
storage, disposal, transport or handling of pollutants,  contaminants, hazardous
substances or wastes or the clean-up or other remediation thereof.

         "Equity  Interest"  means  (i)  the  outstanding   Voting  Stock  of  a
corporation  or other  business  entity,  (ii) the  interest  in the  capital or
profits  of a  corporation,  limited  liability  company,  partnership  or joint
venture, or (iii) the beneficial interest in a trust or estate.

         "ERISA" means the Employee  Retirement  Income Security Act of 1974, as
amended from time to time, and any rule or regulation issued thereunder.

         "ERISA   Affiliate"  means  any  trade  or  business  (whether  or  not
incorporated)  that is treated as a single  employer  together with the Borrower
under section 414 of the Code.

          "Eurodollar  Advance"  means an Advance  which  bears  interest at the
Eurodollar Rate.

         "Eurodollar Base Rate" means, with respect to a Eurodollar  Advance for
the relevant Eurodollar Interest Period, the applicable London interbank offered
rate for deposits in U.S.  dollars  appearing on Telerate  Page 3750 as of 11:00
a.m.  (London time) two Business Days prior to the first day of such  Eurodollar
Interest Period,  and having a maturity  approximately  equal to such Eurodollar
Interest  Period.  If no London  interbank  offered rate of such  maturity  then
appears on Telerate Page 3750,  then the Eurodollar  Base Rate shall be equal to
the  London  interbank  offered  rate  for  deposits  in U.S.  dollars  maturing
immediately  before or immediately after such maturity,  whichever is higher, as
determined  by the Agent from  Telerate  Page 3750. If Telerate Page 3750 is not
available,  the  applicable  Eurodollar  Base Rate for the  relevant  Eurodollar
Interest  Period  shall be the rate  determined  by the  Agent to be the rate at
which First Chicago  offers to place deposits in U.S.  dollars with  first-class
banks in the London interbank  market at approximately  11:00 a.m. (London time)
two Business Days prior to the first day of such Eurodollar  Interest Period, in
the  approximate  amount of First Chicago's  relevant  portion of the Eurodollar
Advance and having a maturity  approximately  equal to such Eurodollar  Interest
Period.


                                 Page 87 of 200
<PAGE>

         "Eurodollar  Interest  Period"  means,  with  respect  to a  Eurodollar
Advance,  a period of one, two, three or six months commencing on a Business Day
selected by the Borrower  pursuant to this Agreement.  Such Eurodollar  Interest
Period shall end on the day which corresponds numerically to such date one, two,
three or six  months  thereafter,  provided,  however,  that if there is no such
numerically  corresponding day in such next,  second,  third or sixth succeeding
month,  such  Eurodollar  Interest  Period shall end on the last Business Day of
such next,  second,  third or sixth succeeding  month. If a Eurodollar  Interest
Period would otherwise end on a day which is not a Business Day, such Eurodollar
Interest  Period  shall  end on the  next  succeeding  Business  Day,  provided,
however,  that if said next  succeeding  Business  Day  falls in a new  calendar
month,  such Eurodollar  Interest Period shall end on the immediately  preceding
Business Day.

         "Eurodollar  Loan" means a Loan which  bears  interest at a  Eurodollar
     Rate.

         "Eurodollar Rate" means,  with respect to a Eurodollar  Advance for the
relevant  Eurodollar  Interest  Period,  the sum of (i) the  quotient of (a) the
Eurodollar Base Rate applicable to such Eurodollar  Interest Period,  divided by
(b) one minus the Reserve  Requirement  (expressed  as a decimal)  applicable to
such Eurodollar Interest Period, plus (ii) the Applicable Margin. The Eurodollar
Rate shall be rounded to the next  higher  multiple of 1/16 of 1% if the rate is
not such a multiple.

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

         "Excluded Transfer" is defined in Section 6.14.

         "Facility  Termination Date" means July 22, 1999 or any earlier date on
which the  Aggregate  Commitment  is  reduced  to zero or  otherwise  terminated
pursuant to the terms hereof.

         "Fair  Market  Value"  means,  at any  time  and  with  respect  to any
Property,  the sale value of such  Property  that would be  realized in an arm's
length sale at such time between an informed  and willing  buyer and an informed
and  willing  seller   (neither  being  under  a  compulsion  to  buy  or  sell,
respectively).

         "Federal Funds Effective Rate" means, for any day, an interest rate per
annum equal to the  weighted  average of the rates on  overnight  Federal  funds
transactions  with  members of the Federal  Reserve  System  arranged by Federal
funds  brokers on such day, as published  for such day (or, if such day is not a
Business Day, for the immediately preceding Business Day) by the Federal Reserve
Bank of New York,  or, if such rate is not so  published  for any day which is a
Business Day, the average of the quotations at  approximately  10 a.m.  (Chicago
time) on such day on such transactions  received by the Agent from three Federal
funds  brokers  of  recognized  standing  selected  by the  Agent  in  its  sole
discretion.


                                 Page 88 of 200
<PAGE>

         "First  Chicago"  means  The  First  National  Bank of  Chicago  in its
individual capacity, and its successors.

         "Fixed Rate" means the Eurodollar Rate or the Absolute Rate.

         "Fixed Rate Advance"  means an Advance which bears  interest at a Fixed
Rate.

         "Fixed Rate Loan" means a Loan which bears interest at a Fixed Rate.

         "Floating  Rate" means,  for any day, a rate per annum equal to (i) the
Alternate Base Rate for such day plus (ii) the Applicable  Margin,  in each case
changing when and as the Alternate Base Rate changes.

         "Floating  Rate Advance"  means an Advance which bears  interest at the
Floating Rate.

         "Floating  Rate Loan" means a Loan which bears interest at the Floating
Rate.

         "Friendly  Acquisition"  means an Acquisition which has been either (a)
not  disapproved by the board of directors of the  corporation,  or the managing
body of the firm, which is the subject of such  Acquisition  after such board or
managing body has been given the opportunity to consider such Acquisition or (b)
recommended  by such  board to the  shareholders  of such  corporation  and,  if
required by applicable law, approved by such shareholders,  and excluding in any
event any Acquisition involving an "unfriendly" or contested tender offer.

         "Governmental  Authority"  means (i) the  government  of (1) the United
States of America or any State or other political  subdivision  thereof,  or (2)
any  jurisdiction  in which the Borrower or any  Subsidiary  conducts all or any
part of its business,  or which asserts  jurisdiction over any properties of the
Borrower  or  any  Subsidiary,   or  (ii)  any  entity   exercising   executive,
legislative,  judicial, regulatory or administrative functions of, or pertaining
to, any such government.

         "Guaranty"  means, with respect to any Person,  any obligation  (except
the endorsement in the ordinary course of business of negotiable instruments for
deposit or collection) of such Person guaranteeing or in effect guaranteeing any
indebtedness,  dividend or other  obligation  of any other Person in any manner,
whether  directly or  indirectly,  including  (without  limitation)  obligations
incurred through an agreement,  contingent or otherwise,  by such Person: (i) to
purchase such indebtedness or obligation or any Property  constituting  security
therefor;  (ii) to advance or supply  funds (1) for the  purchase  or payment of
such indebtedness or obligation, or (2) to maintain any working capital or other
balance sheet condition or any income statement condition of any other Person or
otherwise to advance or make available funds for the purchase or payment of such
indebtedness or obligation;  (iii) to lease properties or to purchase properties
or services primarily for the purpose of assuring the owner of such indebtedness
or  obligation  of the  ability  of any  other  Person  to make  payment  of the


                                 Page 89 of 200
<PAGE>

indebtedness  or  obligation;  or (iv)  otherwise  to  assure  the owner of such
indebtedness or obligation  against loss in respect thereof.  In any computation
of the indebtedness or other liabilities of the obligor under any Guaranty,  the
indebtedness or other obligations that are the subject of such Guaranty shall be
assumed to be direct obligations of such obligor.

         "Hazardous  Material" means any and all pollutants,  toxic or hazardous
wastes or any other substances that might pose a hazard to health or safety, the
removal  of which may be  required  or the  generation,  manufacture,  refining,
production, processing, treatment, storage, handling, transportation,  transfer,
use, disposal, release, discharge,  spillage, seepage, or filtration of which is
or  shall  be  restricted,   prohibited  or  penalized  by  any  applicable  law
(including, without limitation,  asbestos, urea formaldehyde foam insulation and
polychlorinated biphenyls).

         "Interest  Period" means a  Eurodollar  Interest  Period or an Absolute
Rate Interest Period.

         "Invitation  for  Competitive  Bid  Quotes"  means  an  Invitation  for
Competitive  Bid  Quotes  substantially  in the  form  of  Exhibit  "D"  hereto,
completed and  delivered by the Agent to the Lenders in accordance  with Section
2.5.3.

         "Intergroup Transfer" is defined in Section 6.14.

         "Investment"  means  any  investment,  made in cash or by  delivery  of
Property,  by the Borrower or any of its Subsidiaries in any Person,  whether by
acquisition of stock,  indebtedness or other obligation or Security  (including,
without  limitation,  any interests in any partnership or joint venture),  or by
loan,  Guaranty,  advance,  capital  contribution  or  otherwise;  provided that
"Investment"  does not  include  trade  credit  to the  extent  extended  in the
ordinary course of business.

         "Lenders" means the lending  institutions listed on the signature pages
of this Agreement and their respective successors and assigns.

         "Lending  Installation"  means,  with respect to a Lender or the Agent,
any office, branch, subsidiary or affiliate of such Lender or the Agent.

         "Level 1 Period"  means any period  during  which the Debt to Cash Flow
from  Operations  Ratio for the most recently ended fiscal quarter was less than
1.0 to 1.0.

         "Level 2 Period"  means any period  which does not qualify as a Level 1
Period  during  which the Debt to Cash Flow from  Operations  Ratio for the most
recently ended fiscal quarter was less than 2.0 to 1.0.


                                 Page 90 of 200
<PAGE>

         "Level 3 Period"  means any period  which does not qualify as a Level 1
Period or a Level 2 Period  during  which the Debt to Cash Flow from  Operations
Ratio for the most recently ended fiscal quarter was less than 2.5 to 1.0.

         "Level 4 Period"  means any period  which does not qualify as a Level 1
Period, a Level 2 Period or a Level 3 Period.

         "Lien"  means  any  lien  (statutory  or  other),   mortgage,   pledge,
hypothecation,  assignment,  deposit  arrangement,  encumbrance  or  preference,
priority or other security agreement or preferential  arrangement of any kind or
nature whatsoever  (including,  without limitation,  the interest of a vendor or
lessor  under any  conditional  sale,  Capital  Lease or other  title  retention
agreement).

         "Loan"  means,  with  respect  to a  Lender,  such  Lender's  loan made
pursuant to Article II (or any conversion or continuation thereof).

         "Loan  Documents"  means this  Agreement,  the Notes and the Subsidiary
Guaranty.

         "Material"  means  material in relation  to the  business,  operations,
affairs,  financial  condition,  assets or  properties  of the  Borrower and the
Restricted Subsidiaries taken as a whole.

         "Material  Adverse  Effect" means a material  adverse effect on (i) the
business, operations,  affairs, financial condition, assets or properties of the
Borrower and the Restricted Subsidiaries,  taken as a whole, (ii) the ability of
the  Borrower to perform its  obligations  under this  Agreement  and the Notes,
(iii) the  ability  of any  Restricted  Subsidiary  to  perform  its  respective
obligations   under  the   Subsidiary   Guaranty,   or  (iv)  the   validity  or
enforceability  of this Agreement,  the Subsidiary  Guaranty or the Notes or the
rights or remedies of the Agent or the Lenders thereunder.

         "Maximum Rate" is defined in Section 9.14.

         "Multiemployer  Plan" means a Plan maintained  pursuant to a collective
bargaining  agreement  or any other  arrangement  to which the  Borrower  or any
member of the  Controlled  Group is a party to which more than one  employer  is
obligated to make contributions.

         "Net Asset Sale Proceeds Amount" means, with respect to any Transfer of
any  Property  by any  Person,  an amount  equal to the  difference  of: (i) the
aggregate amount of the  consideration  (valued at the Fair Market Value of such
consideration at the time of the consummation of such Transfer) received by such
Person in  respect of such  Transfer,  minus (ii) all  ordinary  and  reasonable
out-of-pocket  costs and expenses actually incurred by such Person in connection
with such Transfer.


                                 Page 91 of 200
<PAGE>

         "Net Proceeds of Common Stock" means, with respect to any period,  cash
proceeds  (net of all costs and  out-of-pocket  expenses  incurred in connection
therewith, including, without limitation,  placement, underwriting and brokerage
fees and  expenses)  received by the  Borrower and the  Restricted  Subsidiaries
during such period from the sale of all common stock of the Borrower,  including
in such net proceeds:  (i) the net amount paid upon issuance and exercise during
such period of any right to acquire any common stock, or paid during such period
to convert a convertible debt Security to common stock (but excluding any amount
paid to the Borrower upon issuance of such convertible debt Security);  and (ii)
any amount paid to the Borrower upon issuance of any  convertible  debt Security
that is converted to common stock during such period.

         "Notes" means, collectively,  the Competitive Bid Notes and the Ratable
Notes; and "Note" means any one of the Notes.

         "Notice of Assignment" is defined in Section 12.3.2.

         "Obligations"  means all unpaid  principal  of and  accrued  and unpaid
interest  on  the  Notes,   all  accrued  and  unpaid  fees  and  all  expenses,
reimbursements, indemnities and other obligations of the Borrower to the Lenders
or to any Lender, the Agent or any indemnified party hereunder arising under the
Loan Documents.

         "Ordinary Course Transfer" is defined in Section 6.14.

         "Participants" is defined in Section 12.2.1.

         "Payment  Date" means the fifth Business Day  following the end of each
quarter.

         "PBGC" means the Pension Benefit Guaranty Corporation, or any successor
thereto.

         "Person" means any natural person,  corporation,  firm,  joint venture,
partnership,  association, enterprise, trust or other entity or organization, or
any  government  or  political   subdivision   or  any  agency,   department  or
instrumentality thereof.

         "Plan" means an "employee  benefit plan" (as defined in section 3(3) of
ERISA) that is or,  within the preceding  five years,  has been  established  or
maintained,  or to which  contributions are or, within the preceding five years,
have been made or required to be made, by the Borrower or any ERISA Affiliate or
with  respect  to  which  the  Borrower  or any  ERISA  Affiliate  may  have any
liability.

         "Prepayment Transfer" is defined in Section 6.14.

         "Priority Debt" means, without duplication,  the sum of (i) all Debt of
the Borrower  secured by a Lien permitted  only by Section  6.15(j) and (ii) all
Debt of  Restricted  Subsidiaries  (except  (x) Debt held by the  Borrower  or a


                                 Page 92 of 200
<PAGE>

Wholly-Owned Restricted Subsidiary,  (y) Debt of a Restricted Subsidiary that is
an  unsecured  Guaranty  of  Senior  Debt and that  ranks  pari  passu  with the
obligations of the Restricted  Subsidiaries under the Subsidiary  Guaranty,  and
(z)  Debt  of a  Restricted  Subsidiary  secured  by a  Lien  permitted  by  the
provisions of Section 6.15(a) through (i), inclusive).

         "Property"  of a  Person  means  any and all  property,  whether  real,
personal, tangible, intangible, or mixed, of such Person, or other assets owned,
leased or operated by such Person.

         "Purchasers" is defined in Section 12.3.1.

         "Ratable  Advance"  means  a  borrowing  hereunder  consisting  of  the
aggregate  amount  of the  several  Ratable  Loans  made by the  Lenders  to the
Borrower  at the same time,  at the same Rate  Option and for the same  Interest
Period.

         "Ratable Borrowing Notice" is defined in Section 2.4.3.

         "Ratable  Loan"  means a Loan made by a Lender  pursuant to Section 2.4
hereof.

         "Ratable  Note" means a promissory  note in  substantially  the form of
Exhibit "A" hereto, duly executed and delivered to the Agent by the Borrower for
the account of a Lender and payable to the order of such Lender in the amount of
its Commitment, including any amendment, modification, renewal or replacement of
such promissory note.

          "Rate  Option"  means the  Eurodollar  Rate,  the Floating Rate or the
Absolute Rate.

         "Regulation  D" means  Regulation  D of the Board of  Governors  of the
Federal Reserve System as from time to time in effect and any successor  thereto
or other  regulation  or  official  interpretation  of said  Board of  Governors
relating  to reserve  requirements  applicable  to member  banks of the  Federal
Reserve System.

         "Regulation  U" means  Regulation  U of the Board of  Governors  of the
Federal Reserve System as from time to time in effect and any successor or other
regulation or official interpretation of said Board of Governors relating to the
extension of credit by banks for the purpose of  purchasing  or carrying  margin
stocks applicable to member banks of the Federal Reserve System.

         "Reinvested Transfer" is defined in Section 6.14.

         "Reportable  Event" means a reportable event as defined in Section 4043
of ERISA and the regulations issued under such section,  with respect to a Plan,
excluding,  however,  such events as to which the PBGC by regulation  waived the
requirement  of Section  4043(a) of ERISA that it be notified  within 30 days of
the  occurrence  of such event,  provided,  however,  that a failure to meet the


                                 Page 93 of 200
<PAGE>

minimum funding  standard of Section 412 of the Code and of Section 302 of ERISA
shall be a Reportable Event regardless of the issuance of any such waiver of the
notice requirement in accordance with either Section 4043(a) of ERISA or Section
412(d) of the Code.

         "Required  Lenders"  means  Lenders  in the  aggregate  having at least
66-2/3% of the Aggregate  Commitment  or, if the Aggregate  Commitment  has been
terminated,  Lenders in the aggregate  holding at least 66-2/3% of the aggregate
unpaid principal amount of the outstanding Advances.

         "Reserve  Requirement"  means,  with respect to a  Eurodollar  Interest
Period,  the  maximum  aggregate  reserve  requirement   (including  all  basic,
supplemental,  marginal and other reserves) which is imposed under  Regulation D
on Eurocurrency liabilities.

         "Responsible  Officer" means any Senior Financial Officer and any other
officer  of the  Company  with  responsibility  for  the  administration  of the
relevant portion of this Agreement.

         "Restricted  Investments"  means all Investments  except the following:
(i) cash; (ii) Investments in one or more Restricted  Subsidiaries or any Person
engaged in the business  referred to in Section 6.4 that  concurrently with such
Investment becomes a Wholly-Owned  Restricted  Subsidiary;  (iii) Investments in
United States  Governmental  Securities,  provided that such obligations  mature
within  365 days  from the date of  acquisition  thereof;  (iv)  Investments  in
certificates of deposit or banker's  acceptances  issued by an Acceptable  Bank,
provided  that  such  obligations  mature  within  365  days  from  the  date of
acquisition  thereof;  (v)  Investments  in  commercial  paper given the highest
rating by a credit rating agency of  recognized  national  standing and maturing
not more than 270 days from the date of creation  thereof;  and (vi) Investments
in money market  mutual funds that invest  solely in  so-called  "money  market"
instruments maturing not more than one year after the acquisition thereof, which
funds have assets in excess of Five Hundred Million Dollars ($500,000,000).  For
purposes of this Agreement,  an Investment  shall be valued at the lesser of (w)
cost and (x) the value at which such  Investment  is to be shown on the books of
the  Borrower and the  Restricted  Subsidiaries  in  accordance  with  Agreement
Accounting Principles.

         "Restricted  Payment"  means (i) any  Distribution  in  respect  of the
Borrower or any Restricted Subsidiary (other than on account of capital stock or
other equity interests of a Restricted Subsidiary owned legally and beneficially
by  the  Borrower  or  another  Restricted   Subsidiary),   including,   without
limitation,  any  Distribution  resulting in the  acquisition by the Borrower of
Securities  which  would  constitute  treasury  stock;  and  (ii)  any  payment,
repayment,  redemption,  retirement,  repurchase or other acquisition, direct or
indirect,  by the Borrower or any Restricted Subsidiary of, on account of, or in
respect of, the principal of any Subordinated Debt (or any installment  thereof)
prior to the regularly scheduled maturity date thereof (as in effect on the date
such Subordinated Debt was originally incurred). For purposes of this Agreement,


                                 Page 94 of 200
<PAGE>

the amount of any  Restricted  Payment made in Property  shall be the greater of
(x) the Fair Market Value of such  Property (as  determined in good faith by the
board of directors  (or  equivalent  governing  body) of the Person  making such
Restricted  Payment)  and (y) the net book  value  thereof  on the books of such
Person, in each case determined as of the date on which such Restricted  Payment
is made.

         "Restricted  Subsidiary"  means and includes each and every  Subsidiary
other than any Subsidiary which, at the time of any determination hereunder, has
been  designated by the Board of Directors and by written notice of the Borrower
to the Agent to be an Unrestricted Subsidiary; provided, in any event, that each
of the following shall at all times constitute a Restricted Subsidiary: (i) each
Subsidiary  identified  on  Schedule  1; and (ii) each  Subsidiary  which  owns,
directly or indirectly,  more than fifty percent (50%) of the Equity Interest of
a Restricted Subsidiary.

         "Section" means a numbered  section of this  Agreement,  unless another
document is specifically referenced.

         "Securities Act" means the Securities Act of 1933, as amended.

         "Security"  means  "security"  as  defined   in  Section  2(1)  of  the
Securities Act.

         "Senior  Debt" means any Debt of the Borrower that is not in any manner
subordinated  in right of payment or security in any respect to the  Obligations
or to any other Debt of the Borrower.

         "Senior Financial Officer" means the chief financial officer, principal
accounting officer, treasurer or comptroller of the Borrower.

         "Senior  Notes"  means,  collectively,  the  Borrower's  7.17% Series A
Senior Notes due December 30, 2001, the  Borrower's  7.17% Series B Senior Notes
due  December  30,  2002 and the  Borrower's  7.48%  Series C Senior  Notes  due
December 30, 2002.

         "Single  Employer Plan" means a Plan  maintained by the Borrower or any
member of the  Controlled  Group for  employees of the Borrower or any member of
the Controlled Group.

         "Subordinated  Debt" means any Debt of the Borrower  other than  Senior
Debt.

         "Subsidiary"  means,  as  to  any  Person,  any  corporation,   limited
liability  company,  partnership,  joint venture,  trust or estate in which such
Person or one or more of the  Subsidiaries or such Person and one or more of the
Subsidiaries  own more than fifty percent (50%) of the Equity  Interest.  Unless
stated to the contrary or unless the context  otherwise  clearly  requires,  any
reference to a "Subsidiary" is a reference to a Subsidiary of the Borrower.


                                 Page 95 of 200
<PAGE>

         "Subsidiary  Guaranty" means that certain Subsidiary  Guaranty dated as
of July 22, 1996 made by the Restricted  Subsidiaries in favor of the Agent, for
the ratable benefit of the Lenders.

         "Substantial Portion" is defined in Section 6.14.

         "Total Capitalization" means, at any time, the sum of Consolidated Debt
plus Consolidated Net Worth, in each case at such time.

         "Transfer" is defined in Section 6.14.

         "Transferee" is defined in Section 12.4.

         "Type"  means,  with respect to any  Advance,  its nature as a Floating
Rate Advance, Eurodollar Advance or Absolute Rate Advance.

         "Unfunded  Liabilities"  means the amount (if any) by which the present
value of all (vested and unvested)  aggregate accrued benefit  liabilities under
all Single  Employer Plans exceeds the aggregate  current value of all such Plan
assets allocable to such benefit liabilities, all determined as of the then most
recent valuation date for such Plans using PBGC actuarial assumptions for single
employer  plan  terminations.  As used in this  definition,  the  term  "benefit
liabilities"  has the meaning  specified  in section 4001 of ERISA and the terms
"current value" and "present  value" have the meaning  specified in section 3 of
ERISA.

         "United States  Governmental  Security" means any direct obligation of,
or  obligation  guaranteed  by,  the  United  States of  America,  or any agency
controlled or supervised by or acting as an instrumentality of the United States
of America pursuant to authority granted by the Congress of the United States of
America,  so long as such  obligation or guarantee shall have the benefit of the
full  faith and credit of the United  States of  America  which  shall have been
pledged  pursuant to authority  granted by the Congress of the United  States of
America.

         "Unmatured  Default"  means an event which but for the lapse of time or
the giving of notice, or both, would constitute a Default.

         "Unrestricted  Subsidiary"  means each Subsidiary of the Borrower other
than a Restricted Subsidiary.

         "Voting Stock" shall mean the capital stock or similar  interest of any
class or classes (however designated) of a corporation or other business entity,
the holders of which are ordinarily,  in the absence of contingencies,  entitled
to vote for the  election of the members of the board of  directors  (or Persons
performing similar functions) of a corporation or other business entity.


                                 Page 96 of 200
<PAGE>

         "Wholly-Owned Restricted Subsidiary" means, at any time, any Restricted
Subsidiary  one hundred  percent (100%) of all of the Equity  Interests  (except
directors' qualifying shares) and voting interests of which are owned by any one
or more  of the  Borrower  and  the  Borrower's  other  Wholly-Owned  Restricted
Subsidiaries at such time.

         "Wholly-Owned  Subsidiary"  means,  at any  time,  any  Subsidiary  one
hundred  percent  (100%)  of all  of the  Equity  Interests  (except  directors'
qualifying shares) and voting interests of which are owned by any one or more of
the Borrower and the Borrower's other Wholly-Owned Subsidiaries at such time.

         The  foregoing  definitions  shall be  equally  applicable  to both the
singular and plural forms of the defined terms.



                                   ARTICLE II

                                   THE CREDITS


          2.1.  Commitment.  From and including  the date of this  Agreement and
     prior to the Facility  Termination  Date, (i) each Lender severally agrees,
     on the terms and  conditions set forth in this  Agreement,  to make Ratable
     Loans to the Borrower in  accordance  with Section 2.4 from time to time in
     amounts  not to exceed in the  aggregate  at any one time  outstanding  the
     amount of its Commitment and (ii) each Lender may, in its sole  discretion,
     make bids to make  Competitive Bid Loans to the Borrower in accordance with
     Section  2.5.  Subject to the terms of this  Agreement,  the  Borrower  may
     borrow,  repay and reborrow at any time prior to the  Facility  Termination
     Date.  The  Commitments  to lend  hereunder  shall  expire on the  Facility
     Termination Date.

          2.2. Facility Amount.  In no event may the aggregate  principal amount
     of all outstanding  Advances  (including both the Ratable  Advances and the
     Competitive  Bid Advances)  exceed the Aggregate  Commitment.  The Borrower
     agrees  that  if at  any  time  any  such  excess  shall  arise,  it  shall
     immediately pay to the Agent the amount necessary to eliminate such excess,
     without presentment,  demand,  protest or notice of any kind from the Agent
     or any Lender, all of which the Borrower hereby expressly waives.

          2.3.  Termination.  Any  outstanding  Advances  and all  other  unpaid
     Obligations  shall  be  paid  in  full  by the  Borrower  on  the  Facility
     Termination Date.

          2.4.    Ratable Advances.

                    2.4.1 Ratable Loans.  Each Ratable  Advance  hereunder shall
               consist of Ratable Loans made from the several Lenders ratably in
               proportion to the ratio that their respective Commitments bear to


                                 Page 97 of 200
<PAGE>

               the Aggregate  Commitment.  The aggregate  outstanding  amount of
               Competitive  Bid Advances  shall reduce the amount  available for
               borrowing   under  each  Lender's   Commitment   ratably  in  the
               proportion  such  Lender's  Commitment  bears  to  the  Aggregate
               Commitment  regardless  of which  Lender  or  Lenders  make  such
               Competitive Bid Advances.  Ratable Advances shall be evidenced by
               the Ratable Notes.

                    2.4.2 Ratable Advance Rate Options. The Ratable Advances may
               be  Floating  Rate  Advances  or   Eurodollar   Advances,   or  a
               combination thereof,  selected by the Borrower in accordance with
               Sections 2.4.3 and 2.4.4. No Ratable Advance may mature after the
               Facility Termination Date.

                    2.4.3.  Method of Selecting  Types and Interest  Periods for
               New  Ratable  Advances.  The  Borrower  shall  select the Type of
               Ratable Advance and, in the case of each Eurodollar Advance,  the
               Interest  Period  applicable to each Ratable Advance from time to
               time.  The Borrower  shall give the Agent  irrevocable  notice (a
               "Ratable  Borrowing  Notice") not later than 10:00 a.m.  (Chicago
               time)  one  Business  Day  before  the  Borrowing  Date  for each
               Floating Rate Advance or three Business Days before the Borrowing
               Date for each Eurodollar Advance, specifying:

                    (i)  the Borrowing  Date,  which shall be a Business Day, of
                         such Ratable Advance,

                    (ii) the aggregate amount of such Ratable Advance,

                    (iii)the Type of Ratable Advance selected, and

                    (iv) in the case of each  Eurodollar  Advance,  the Interest
                         Period applicable thereto.

               Not later than noon (Chicago time) on each Borrowing  Date,  each
               Lender  shall  make  available  its  Loan  or  Loans,   in  funds
               immediately  available  in  Chicago  to the Agent at its  address
               specified  pursuant to Article  XIII.  Promptly  after receipt of
               such  funds  from the  Lenders,  the Agent  will make such  funds
               available to the Borrower at the Agent's aforesaid address.

                    2.4.4.  Conversion and  Continuation of Outstanding  Ratable
               Advances.  Floating Rate Advances shall continue as Floating Rate
               Advances  unless  and  until  such  Floating  Rate  Advances  are
               converted into Eurodollar Advances. Each Eurodollar Advance shall
               continue  as a  Eurodollar  Advance  until  the  end of the  then
               applicable   Interest  Period   therefor,   at  which  time  such
               Eurodollar  Advance  shall  be  automatically  converted  into  a


                                 Page 98 of 200
<PAGE>

               Floating  Rate Advance  unless the Borrower  shall have given the
               Agent a  Conversion/Continuation  Notice  requesting that, at the
               end of such  Interest  Period,  such  Eurodollar  Advance  either
               continue as a Eurodollar Advance for the same or another Interest
               Period or be converted  into a Floating Rate Advance.  Subject to
               the terms of Section  2.7,  the  Borrower  may elect from time to
               time to  convert  all or any part of any  Ratable  Advance of any
               Type into any other Type or Types of Ratable  Advances;  provided
               that any conversion of any  Eurodollar  Advance shall be made on,
               and only  on,  the last  day of the  Interest  Period  applicable
               thereto.  The Borrower shall give the Agent irrevocable notice (a
               "Conversion/Continuation Notice") of each conversion of a Ratable
               Advance or  continuation  of a Eurodollar  Advance not later than
               10:00 a.m.  (Chicago time) at least one Business Day, in the case
               of a conversion  into a Floating Rate Advance,  or three Business
               Days,  in the  case of a  conversion  into or  continuation  of a
               Eurodollar Advance, prior to the date of the requested conversion
               or continuation, specifying:

                    (i)  the requested  date,  which shall be a Business Day, of
                         such conversion or continuation;

                    (ii) the  aggregate  amount and Type of the Ratable  Advance
                         which is to be converted or continued; and

                    (iii)the amount and Type(s) of Ratable Advance(s) into which
                         such  Ratable  Advance is to be  converted or continued
                         and, in the case of a conversion  into or  continuation
                         of a Eurodollar  Advance,  the duration of the Interest
                         Period applicable thereto.

          2.5. Competitive Bid Advances.

                    2.5.1.  Competitive  Bid  Option.  In  addition  to  Ratable
               Advances  pursuant to Section  2.4,  but subject to the terms and
               conditions of this Agreement (including,  without limitation, the
               limitation  set forth in Section 2.2 as to the maximum  aggregate
               principal  amount of all  outstanding  Advances  hereunder),  the
               Borrower  may,  as set forth in this  Section  2.5,  request  the
               Lenders,  prior to the Facility  Termination Date, to make offers
               to make Competitive Bid Advances. Each Lender may, but shall have
               no  obligation  to, make such offers and the  Borrower  may,  but
               shall have no obligation to, accept any such offers in the manner
               set forth in this Section 2.5.  Competitive Bid Advances shall be
               evidenced by the Competitive Bid Notes.

                    2.5.2.  Competitive  Bid Quote  Request.  When the  Borrower
               wishes to request offers to make Competitive Bid Loans under this
               Section  2.5,  it  shall  transmit  to the  Agent by  telecopy  a
               Competitive  Bid  Quote  Request  substantially  in the  form  of
               Exhibit  "C" hereto so as to be  received no later than 9:00 a.m.
               (Chicago  time) at least one Business Day prior to the  Borrowing
               Date proposed therein, specifying:

                    (i)  the proposed  Borrowing Date, which shall be a Business
                         Day, for the proposed Competitive Bid Advance;


                                 Page 99 of 200
<PAGE>

                    (ii) the aggregate  principal amount of such Competitive Bid
                         Advance; and

                    (iii)the Interest Period  applicable  thereto (which may not
                         extend past the Facility Termination Date).

               The Borrower may request offers to make Competitive Bid Loans for
               more than one Interest  Period in a single  Competitive Bid Quote
               Request.  No Competitive  Bid Quote Request shall be given by the
               Borrower  within five Business Days of any other  Competitive Bid
               Quote Request from the Borrower. To the extent that a Competitive
               Bid Quote Request does not conform substantially to the format of
               Exhibit "C" hereto, it will be rejected.

                    2.5.3 Invitation for Competitive Bid Quotes. Promptly and in
               any event  before the close of business on the same  Business Day
               of  receipt  of a  Competitive  Bid  Quote  Request  that  is not
               rejected  pursuant to Section 2.5.2, the Agent shall send to each
               of the Lenders by  telecopy an  Invitation  for  Competitive  Bid
               Quotes  substantially  in the form of Exhibit "D"  hereto,  which
               shall  constitute an invitation by the Borrower to each Lender to
               submit  Competitive  Bid Quotes  offering to make the Competitive
               Bid Loans to which such  Competitive Bid Quote Request relates in
               accordance with this Section 2.5.

                    2.5.4.  Submission and Contents of  Competitive  Bid Quotes.
               (a) Each Lender may, in its sole discretion, submit a Competitive
               Bid Quote  containing an offer or offers to make  Competitive Bid
               Loans in response to any Invitation for  Competitive  Bid Quotes.
               Each  Competitive Bid Quote must comply with the  requirements of
               this Section 2.5.4 and must be submitted to the Agent by telecopy
               at its offices specified in or pursuant to Article XIII not later
               than 9:00 a.m.  (Chicago  time) on the proposed  Borrowing  Date;
               provided that  Competitive Bid Quotes  submitted by First Chicago
               may only be submitted  if the Agent  notifies the Borrower of the
               terms of the offer or offers contained  therein not later than 15
               minutes   prior  to  the  latest  time  at  which  the   relevant
               Competitive  Bid Quotes must be submitted  by the other  Lenders.
               Subject to Articles  IV and VIII,  any  Competitive  Bid Quote so
               made shall be irrevocable  except with the written consent of the
               Agent given on the instructions of the Borrower.

                    (b) Each Competitive Bid Quote shall be in substantially the
               form of Exhibit "E" hereto and shall in any case specify:

                         (i) the  proposed  Borrowing  Date,  which shall be the
                    same as that set  forth  in the  applicable  Invitation  for
                    Competitive Bid Quotes;

                         (ii) the principal  amount of the  Competitive Bid Loan
                    for which each such  offer is being  made,  which  principal


                                Page 100 of 200
<PAGE>

                    amount  (1) may be greater  than,  less than or equal to the
                    Commitment  of the  quoting  Lender,  (2)  must be at  least
                    $2,000,000 and an integral  multiple of $1,000,000,  and (3)
                    may not exceed the principal amount of Competitive Bid Loans
                    for which offers were requested;

                         (iii) the minimum  amount,  if any, of the  Competitive
                    Bid Loan which may be accepted by the Borrower;

                         (iv)  the   Absolute   Rate   offered   for  each  such
                    Competitive Bid Loan; and

                         (v) the identity of the quoting Lender.

                    (c) The Agent shall reject any Competitive Bid Quote that:

                         (i) is not  substantially  in the form of  Exhibit  "E"
                    hereto or does not specify all of the  information  required
                    by Section 2.5.4(b);

                         (ii)  contains   qualifying,   conditional  or  similar
                    language,  other than any such language contained in Exhibit
                    "E";

                         (iii)proposes  terms other than or in addition to those
                    set forth in the applicable  Invitation for  Competitive Bid
                    Quotes; or

                         (iv)  arrives  after  the  time set  forth  in  Section
                    2.5.4(a).

         If any Competitive Bid Quote shall be rejected pursuant to this Section
         2.5.4(c),  then the Agent  shall  notify  the  relevant  Lender of such
         rejection as soon as practical.

               2.5.5 Notice to  Borrower.  The Agent shall  promptly  notify the
          Borrower of the terms (i) of any  Competitive Bid Quote submitted by a
          Lender  that is in  accordance  with  Section  2.5.4  and  (ii) of any
          Competitive   Bid  Quote  that   amends,   modifies  or  is  otherwise
          inconsistent  with a previous  Competitive Bid Quote submitted by such
          Lender with respect to the same  Competitive  Bid Quote  Request.  Any
          such  subsequent  Competitive  Bid Quote shall be  disregarded  by the
          Agent unless such subsequent Competitive Bid Quote specifically states
          that it is submitted solely to correct a manifest error in such former
          Competitive  Bid  Quote.  The  Agent's  notice to the  Borrower  shall
          specify the aggregate  principal  amount of Competitive  Bid Loans for
          which offers have been received for each Interest Period  specified in
          the related Competitive Bid Quote Request and the respective principal
          amounts and Absolute Rates so offered.

               2.5.6.  Acceptance  and Notice by Borrower.  Not later than 10:00
          a.m. (Chicago time) on the proposed Borrowing Date, the Borrower shall
          notify the Agent of its acceptance or rejection of the offers of which


                                Page 101 of 200
<PAGE>

          it received notification pursuant to Section 2.5.5. The failure by the
          Borrower  to give such  notice  to the  Agent  shall be deemed to be a
          rejection of all such offers.  In the case of acceptance,  such notice
          (a  "Competitive  Bid Borrowing  Notice")  shall specify the aggregate
          principal amount of offers for each Interest Period that are accepted.
          The Borrower may accept any  Competitive Bid Quote in whole or in part
          (subject to the terms of Section 2.5.4(b)(iii)); provided that:

               (i)  the  aggregate  principal  amount  of each  Competitive  Bid
                    Advance  may not exceed the  applicable  amount set forth in
                    the related Competitive Bid Quote Request;

               (ii) acceptance  of  offers  may  only be made  on the  basis  of
                    ascending Absolute Rates; and

               (iii)the  Borrower  may not accept any offer that is described in
                    Section 2.5.4(c) (and is not  subsequently  corrected by the
                    relevant  Lender) or that otherwise fails to comply with the
                    requirements of this Agreement.

               2.5.7.  Allocation  by Agent.  If offers  are made by two or more
          Lenders with the same Absolute Rates for a greater aggregate principal
          amount than the amount in respect of which offers are accepted for the
          related Interest Period, the principal amount of Competitive Bid Loans
          in respect of which such offers are accepted shall be allocated by the
          Agent among such Lenders as nearly as possible (in such multiples, not
          greater  than  $1,000,000,  as the  Agent  may  deem  appropriate)  in
          proportion to the aggregate principal amount of such offers; provided,
          however,   that  no  Lender  shall  be  allocated  a  portion  of  any
          Competitive  Bid Advance  which is less than the minimum  amount which
          such Lender has indicated that it is willing to accept. Allocations by
          the Agent of the amounts of Competitive  Bid Loans shall be conclusive
          in the absence of manifest error. The Agent shall promptly, but in any
          event on the same Business Day, notify each Lender of its receipt of a
          Competitive Bid Borrowing Notice and the aggregate principal amount of
          such Competitive Bid Advance allocated to each participating Lender.

               2.5.8.  Competitive  Bid Auction Fees. The Borrower hereby agrees
          to pay to the Agent, for its own account, competitive bid auction fees
          in the amounts set forth in a letter  agreement  between the Agent and
          the Borrower dated July 22, 1996.

          2.6.  Commitment Fee; Voluntary and Mandatory  Reductions in Aggregate
     Commitment.  (a) The Borrower agrees to pay to the Agent for the account of
     each Lender a  commitment  fee at a per annum rate equal to the  Applicable
     Commitment Fee on the daily unused portion of such Lender's Commitment from


                                Page 102 of 200
<PAGE>

     the date hereof to and including the Facility  Termination Date, payable on
     each Payment Date hereafter and on the Facility  Termination  Date.  Solely
     for the purpose of calculating  the amount of commitment fee due hereunder,
     Competitive  Bid Loans shall not constitute  usage of the Commitment of the
     Lender making such Loan or of any other Lender.

          (b) The Borrower may  permanently  reduce the Aggregate  Commitment in
     whole,  or in part  ratably  among the  Lenders in  integral  multiples  of
     $5,000,000, upon at least three Business Days' written notice to the Agent,
     which  notice  shall  specify the amount of any such  reduction,  provided,
     however,  that the amount of the  Aggregate  Commitment  may not be reduced
     below the  aggregate  principal  amount of the  outstanding  Advances.  All
     accrued  commitment  fees  shall be payable  on the  effective  date of any
     termination of the obligations of the Lenders to make Loans hereunder.

          (c) At any time when the Aggregate Commitment exceeds $25,000,000, the
     Aggregate  Commitment  shall be automatically  reduced,  on the date of any
     repayment by the Borrower of any principal  amount of the Senior Notes,  by
     an amount  equal to the  principal  amount  of such  Senior  Notes  repaid,
     provided that the Aggregate  Commitment shall not be required to be reduced
     below  $25,000,000 as a result of this Section 2.6(c). If the provisions of
     this Section 2.6(c) would  otherwise  cause the Aggregate  Commitment to be
     reduced below the aggregate principal amount of the outstanding Loans, then
     the  Borrower  will make a pro rata  prepayment  of the  outstanding  Loans
     (together with any funding indemnification  payments required under Section
     3.4) such that the aggregate principal amount of Loans outstanding does not
     exceed the Aggregate Commitment, as so reduced.

          2.7. Minimum Amount of Each Advance.  Each Fixed Rate Advance shall be
     in the minimum  amount of $2,000,000  (and in multiples of $1,000,000 if in
     excess  thereof),  and each  Floating  Rate Advance shall be in the minimum
     amount of $250,000  (and in  multiples  of $100,000 if in excess  thereof),
     provided,  however,  that any Floating Rate Advance may be in the amount of
     the unused Aggregate Commitment.

          2.8. Optional Principal  Payments.  The Borrower may from time to time
     pay,  without penalty or premium,  all outstanding  Floating Rate Advances,
     or,  in a  minimum  aggregate  amount  of  $250,000,  any  portion  of  the
     outstanding  Floating Rate Advances upon three  Business Days' prior notice
     to the  Agent.  The  Borrower  may from  time to time  pay all  outstanding
     Eurodollar Advances,  or, in a minimum aggregate amount of $2,000,000,  any
     portion of the  outstanding  Eurodollar  Advances upon three Business Days'
     prior notice to the Agent,  provided that the Borrower shall be required to
     pay any amounts due under Section 3.4 in connection with such prepayment at
     the time of such prepayment. Competitive Bid Advances may not be paid prior
     to the last day of the applicable Interest Period.

          2.9.  Changes in Interest Rate,  etc. Each Floating Rate Advance shall
     bear interest on the outstanding  principal  amount  thereof,  for each day
     from and  including  the date such Advance is made or is  converted  from a
     Eurodollar Advance into a Floating Rate Advance


                                Page 103 of 200
<PAGE>

     pursuant to Section  2.4.4 to but  excluding  the date it becomes due or is
     converted into a Eurodollar  Advance  pursuant to Section 2.4.4,  at a rate
     per annum equal to the Floating  Rate for such day.  Changes in the rate of
     interest  on that  portion of any  Advance  maintained  as a Floating  Rate
     Advance will take effect  simultaneously  with each change in the Alternate
     Base Rate.  Each Fixed Rate Advance shall bear interest on the  outstanding
     principal  amount  thereof from and including the first day of the Interest
     Period  applicable  thereto  to (but  not  including)  the last day of such
     Interest Period at the interest rate determined as applicable to such Fixed
     Rate  Advance.  No Interest  Period may end after the Facility  Termination
     Date.

          2.10. Rates Applicable After Default.  Notwithstanding anything to the
     contrary  contained in Section 2.4.3 or 2.4.4,  during the continuance of a
     Default or Unmatured  Default the Required Lenders may, at their option, by
     notice to the  Borrower  (which  notice may be revoked at the option of the
     Required  Lenders  notwithstanding  any  provision of Section 8.2 requiring
     unanimous  consent of the  Lenders to changes in interest  rates),  declare
     that no  Advance  may be made as a  Competitive  Bid  Advance  or made  as,
     converted into or continued as a Eurodollar Advance. During the continuance
     of a Default the Required  Lenders may, at their  option,  by notice to the
     Borrower (which notice may be revoked at the option of the Required Lenders
     notwithstanding any provision of Section 8.2 requiring unanimous consent of
     the Lenders to changes in interest rates), declare that (i) each Fixed Rate
     Advance shall bear interest for the  remainder of the  applicable  Interest
     Period at the rate otherwise applicable to such Interest Period plus 2% per
     annum and (ii) each Floating Rate Advance shall bear interest at a rate per
     annum equal to the Floating Rate otherwise  applicable to the Floating Rate
     Advance plus 2% per annum.

          2.11.  Method of Payment.  All payments of the  Obligations  hereunder
     shall be made, without setoff,  deduction, or counterclaim,  in immediately
     available funds to the Agent at the Agent's address  specified  pursuant to
     Article XIII, or at any other Lending  Installation  of the Agent specified
     in writing by the Agent to the  Borrower,  by noon (local time) on the date
     when due and shall be applied ratably by the Agent among the Lenders.  Each
     payment  delivered  to the Agent for the  account  of any  Lender  shall be
     delivered  promptly  by the Agent to such  Lender in the same type of funds
     that the Agent received at its address  specified  pursuant to Article XIII
     or at any Lending Installation  specified in a notice received by the Agent
     from such Lender.  The Agent is hereby  authorized to charge the account of
     the Borrower  maintained  with First Chicago for each payment of principal,
     interest and fees as it becomes due hereunder.

          2.12. Notes;  Telephonic Notices.  Each Lender is hereby authorized to
     record the principal  amount of each of its Loans and each repayment on the
     schedule  attached to its Ratable Note or its  Competitive Bid Note, as the
     case may be, provided,  however,  that neither the failure to so record nor
     any error in such recordation shall affect the Borrower's obligations under
     any such Note. The Borrower hereby authorizes


                                Page 104 of 200
<PAGE>

     the Lenders and the Agent to (i) extend,  convert or continue  Advances and
     to effect selections of Types of Advances based on telephonic  notices made
     by any person or persons the Agent or any Lender in good faith  believes to
     be an  Authorized  Officer and (ii) to transfer  funds based on  telephonic
     notices made by any person the Agent or Lender in good faith believes to be
     acting on behalf of the Borrower.  The Borrower agrees to deliver  promptly
     to the Agent a written  confirmation,  if such confirmation is requested by
     the Agent or any Lender,  of each telephonic notice signed by an Authorized
     Officer. If the written  confirmation  differs in any material respect from
     the action taken by the Agent and the Lenders, the records of the Agent and
     the Lenders shall govern absent manifest error.

          2.13.  Interest Payment Dates;  Interest and Fee Basis. The Agent will
     give the Borrower notice of the amount of interest accrued on Floating Rate
     Advances  promptly  (and  in no  event  later  than  three  Business  Days)
     following the end of each quarter.  Interest  accrued on each Floating Rate
     Advance  shall be payable on each Payment Date,  commencing  with the first
     such date to occur after the date hereof and at maturity.  Interest accrued
     on each  Fixed  Rate  Advance  shall  be  payable  on the  last  day of its
     applicable  Interest Period, on any date on which the Fixed Rate Advance is
     prepaid,  whether by acceleration or otherwise,  and at maturity.  Interest
     accrued on each Fixed Rate Advance  having an Interest  Period  longer than
     three  months  shall also be  payable  on the last day of each  three-month
     interval during such Interest Period. Interest and commitment fees shall be
     calculated for actual days elapsed on the basis of a 360-day year. Interest
     shall be payable  for the day an Advance is made but not for the day of any
     payment on the amount  paid if payment  is  received  prior to noon  (local
     time) at the place of payment.  If any payment of  principal of or interest
     on an Advance  shall become due on a day which is not a Business  Day, such
     payment shall be made on the next succeeding  Business Day and, in the case
     of a  principal  payment,  such  extension  of time  shall be  included  in
     computing interest in connection with such payment.

          2.14.  Notification  of  Advances,  Interest  Rates,  Prepayments  and
     Commitment  Reductions.  Promptly  after  receipt  thereof,  the Agent will
     notify each Lender of the contents of each Aggregate  Commitment  reduction
     notice,  Borrowing Notice,  Conversion/Continuation  Notice,  and repayment
     notice  received by it  hereunder.  The Agent will notify the  Borrower and
     each Lender of the interest  rate  applicable to each Fixed Rate Advance in
     which such Lender is  participating  promptly  upon  determination  of such
     interest rate and will give each Lender prompt notice of each change in the
     Alternate Base Rate.

          2.15.  Lending  Installations.  Each  Lender may book its Loans at any
     Lending  Installation  selected  by such  Lender and may change its Lending
     Installation  from time to time. All terms of this Agreement shall apply to
     any such  Lending  Installation  and the Notes shall be deemed held by each
     Lender for the benefit of such  Lending  Installation.  Each Lender may, by
     written or telex notice to the Agent and the Borrower,  designate a Lending
     Installation  through  which Loans will be made by it and for whose account
     Loan payments are to be made.

          2.16.  Non-Receipt  of Funds by the Agent.  Unless the  Borrower  or a
     Lender,  as the case may be,  notifies the Agent prior to the date on which
     it is scheduled to make payment to the


                                Page 105 of 200
<PAGE>

     Agent of (i) in the case of a Lender, the proceeds of a Loan or (ii) in the
     case of the Borrower, a payment of principal, interest or fees to the Agent
     for the  account  of the  Lenders,  that it does not  intend  to make  such
     payment,  the Agent may assume that such  payment has been made.  The Agent
     may,  but shall  not be  obligated  to,  make the  amount  of such  payment
     available to the intended  recipient in reliance upon such  assumption.  If
     such Lender or the Borrower,  as the case may be, has not in fact made such
     payment to the Agent, the recipient of such payment shall, on demand by the
     Agent,  repay to the  Agent  the  amount so made  available  together  with
     interest thereon in respect of each day during the period commencing on the
     date such  amount  was so made  available  by the Agent  until the date the
     Agent  recovers such amount at a rate per annum equal to (i) in the case of
     payment by a Lender,  the Federal Funds Effective Rate for such day or (ii)
     in the case of payment by the Borrower, the interest rate applicable to the
     relevant Loan.

          2.17. Optional Increase in the Aggregate Commitment.  (a) The Borrower
     may at any  time,  by  notice  to the  Agent,  propose  that the  Aggregate
     Commitment be increased  (the amount of such  increase  being a "Commitment
     Increase"),  effective as at a date prior to the Facility  Termination Date
     (an "Increase  Date") as to which  agreement is to be reached by an earlier
     date specified in such notice (a  "Commitment  Date");  provided,  however,
     that (A) the Borrower may not propose more than two Commitment Increases in
     any calendar year, (B) the minimum proposed  Commitment Increase per notice
     shall be $5,000,000,  (C) in no event shall the Aggregate Commitment at any
     time exceed $50,000,000, and (D) no Default or Unmatured Default shall have
     occurred and be continuing on such  Increase  Date.  The Agent shall notify
     the Lenders thereof promptly upon its receipt of any such notice. The Agent
     agrees that it will  cooperate  with the Borrower in  discussions  with the
     Lenders  and  other  lending  institutions  with a view  to  arranging  the
     proposed  Commitment  Increase  through the increase of the Commitments of,
     first,  one or more of the  Lenders  (each such  Lender  that is willing to
     increase its Commitment hereunder being an "Increasing Lender") and, if the
     existing  Lenders are not  willing,  in the  aggregate,  to increase  their
     Commitments by the amount of the requested Commitment Increase, then by the
     addition  of one or more  other  lending  institutions  (each an  "Assuming
     Lender") as Lenders and as parties to this  Agreement;  provided,  however,
     that it shall be in each Lender's sole  discretion  whether to increase its
     Commitment  hereunder in connection with the proposed Commitment  Increase;
     and provided  further that the minimum  Commitment of each Assuming  Lender
     that becomes a party to this Agreement  pursuant to this Section 2.17 shall
     be at  least  equal  to  $5,000,000.  If the  Increasing  Lenders  agree to
     increase their  respective  Commitments by an aggregate amount in excess of
     the proposed Commitment Increase, the proposed Commitment Increase shall be
     allocated among such Increasing  Lenders in proportion to their  respective
     Commitments immediately prior to the Increase Date. If agreement is reached
     on or prior to the applicable  Commitment Date with any Increasing  Lenders
     and Assuming  Lenders as to a Commitment  Increase  (which may be less than
     but not greater than specified in the applicable notice from the Borrower),
     such  agreement to be evidenced by a notice in  reasonable  detail from the
     Borrower to the Agent on or prior to the applicable  Commitment  Date, such
     Assuming  Lenders,  if  any,  shall  become  Lenders  hereunder  as of  the
     applicable Increase Date and the Commitments of such Increasing Lenders and
     such  Assuming  Lenders  shall  become or be, as the case may be, as of the
     Increase Date, the amounts specified in such notice; provided that:

               (x) the Agent shall have  received  (with copies for each Lender,
          including  each such  Assuming  Lender)  by no later  than  10:00 A.M.


                                Page 106 of 200
<PAGE>

          (Chicago  time) on the  applicable  Increase Date a  certificate  of a
          Senior  Financial  Officer,  (1) attaching and certifying  resolutions
          adopted by the Board of  Directors  of the Borrower on or prior to the
          Increase  Date  authorizing  the Borrower to borrow money  pursuant to
          this Agreement from time to time in an aggregate  principal  amount at
          any one time outstanding not in excess of the Aggregate  Commitment as
          increased  by  the  Commitment  Increase,  and  certifying  that  such
          resolutions remain in full force and effect and have not been modified
          or  rescinded  or  attaching  and  certifying,   if  applicable,   any
          amendments to such resolutions;

               (y) each such Assuming  Lender shall have delivered to the Agent,
          by no later than 10:00 A.M.  (Chicago  time) on such Increase Date, an
          appropriate  Lender Assumption  Agreement in substantially the form of
          Exhibit "L" hereto,  duly  executed  by such  Assuming  Lender and the
          Borrower; and

               (z) each such  Increasing  Lender  shall  have  delivered  to the
          Agent,  by no later than 10:00 A.M.  (Chicago  time) on such  Increase
          Date,  (A)  its  existing  Note  and  (B)   confirmation   in  writing
          satisfactory to the Agent as to its increased Commitment.

               (b) In the event that the Agent shall have  received  notice from
          the Borrower as to its agreement to a Commitment  Increase on or prior
          to the applicable Commitment Date and each of the actions provided for
          in clauses  (a)(x)  through  (a)(z) above shall have occurred prior to
          10:00  A.M.  (Chicago  time) on the  applicable  Increase  Date to the
          satisfaction of the Agent, the Agent shall promptly notify the Lenders
          (including any Assuming Lenders) and the Borrower of the occurrence of
          such Commitment  Increase and shall record in its records the relevant
          information  with  respect  to each  Increasing  Lender  and  Assuming
          Lender.  Each Increasing Lender and each Assuming Lender shall, before
          2:00  P.M.  (Chicago  time)  on the  applicable  Increase  Date,  make
          available  to the  Agent in  accordance  with the  provisions  of this
          Agreement,  in same day funds, in the case of such Assuming Lender, an
          amount equal to such Assuming  Lender's ratable portion of the Ratable
          Advances then  outstanding  (calculated  based on its  Commitment as a
          percentage  of the  Aggregate  Commitment  after giving  effect to the
          relevant  Commitment  Increase)  and,  in the case of such  Increasing
          Lender, an amount equal to the excess of (i) such Increasing  Lender's
          ratable portion of the Ratable Advances then outstanding  after giving
          effect to the relevant  Commitment  Increase over (ii) such Increasing
          Lender's  ratable  portion of the Ratable  Advances  then  outstanding
          before giving effect to the relevant  Commitment  Increase.  After the
          Agent's  receipt of such funds  from each such  Increasing  Lender and
          each such Assuming  Lender,  the Agent will,  if  necessary,  promptly
          thereafter cause to be distributed like funds to the other Lenders for
          the account of their respective applicable Lending Installations in an
          amount to each  other  Lender  such that the  aggregate  amount of the


                                Page 107 of 200
<PAGE>

          outstanding  Ratable Advances owing to each Lender after giving effect
          to such  distribution  equals  such  Lender's  ratable  portion of the
          Ratable Advances then outstanding  after giving effect to the relevant
          Commitment  Increase.  After the  Borrower  receives  notice  from the
          Agent, the Borrower, at its own expense,  shall execute and deliver to
          the Agent  Ratable and  Competitive  Bid Notes payable to the order of
          each Assuming Lender,  if any, and a Ratable Note payable to the order
          of each Increasing Lender,  dated as of the applicable  Increase Date,
          in a principal  amount equal to such Lender's  Commitment after giving
          effect  to the  relevant  Commitment  Increase,  in the  case  of such
          Ratable Note,  and in the amount of the Aggregate  Commitment,  in the
          case of such  Competitive Bid Note, and  substantially in the forms of
          Exhibits "A" and "B",  respectively.  The Agent,  upon receipt of such
          Notes,  shall promptly  deliver such Notes to the respective  Assuming
          Lenders and Increasing Lenders.

               (c) In the event that the Agent  shall not have  received  notice
          from the Borrower as to such  agreement on or prior to the  applicable
          Commitment Date or the Borrower shall, by notice to the Agent prior to
          the applicable  Increase Date,  withdraw its proposal for a Commitment
          Increase or any of the actions  provided  for above in clauses  (a)(x)
          through (a)(z) shall not have occurred by 10:00 A.M. (Chicago time) on
          the such Increase Date,  such proposal by the Borrower shall be deemed
          not to have been made. In such event,  any actions  theretofore  taken
          under clauses  (a)(x) through (a)(z) above shall be deemed to be of no
          effect  and  all the  rights  and  obligations  of the  parties  shall
          continue as if no such proposal had been made.



                                   ARTICLE III

                             CHANGE IN CIRCUMSTANCES
                             -----------------------


          3.1.   Yield   Protection.   If  any  law  or  any   governmental   or
     quasi-governmental   rule,  regulation,   policy,  guideline  or  directive
     (whether or not having the force of law), or any interpretation thereof, or
     the compliance of any Lender therewith,

               (i)  subjects any Lender or any applicable  Lending  Installation
                    to any tax, duty,  charge or withholding on or from payments
                    due from the  Borrower  (excluding  federal  taxation of the
                    overall  net  income  of any  Lender or  applicable  Lending
                    Installation),  or changes the basis of taxation of payments
                    to any Lender in respect of its Loans or other  amounts  due
                    it hereunder, or

               (ii) imposes  or  increases  or  deems  applicable  any  reserve,
                    assessment,  insurance  charge,  special  deposit or similar
                    requirement  against  assets  of,  deposits  with or for the
                    account  of,  or  credit  extended  by,  any  Lender  or any
                    applicable  Lending  Installation  (other than  reserves and
                    assessments  taken into account in determining  the interest
                    rate applicable to Eurodollar Advances), or

               (iii)imposes  any  other  condition  the  result  of  which is to
                    increase  the cost to any Lender or any  applicable  Lending
                    Installation  of  making,  funding or  maintaining  loans or


                                Page 108 of 200
<PAGE>

               reduces  any amount  receivable  by any Lender or any  applicable
               Lending  Installation  in connection  with loans, or requires any
               Lender or any applicable Lending Installation to make any payment
               calculated  by  reference to the amount of loans held or interest
               received by it, by an amount deemed material by such Lender,

     then,within  15 days of demand by such Lender,  the Borrower shall pay such
     Lender that portion of such increased  expense  incurred or reduction in an
     amount received which such Lender  determines in good faith is attributable
     to making, funding and maintaining its Loans and its Commitment.

          3.2. Changes in Capital Adequacy Regulations. If the amount of capital
     required or expected to be maintained by a Lender, any Lending Installation
     of such Lender or any corporation controlling such Lender is increased as a
     result of a Change,  then,  within  15 days of demand by such  Lender,  the
     Borrower  shall pay such Lender the amount  necessary to compensate for any
     shortfall  in the rate of return on the portion of such  increased  capital
     which  such  Lender  determines  in  good  faith  is  attributable  to this
     Agreement,  its Loans or its  obligation  to make  Loans  hereunder  (after
     taking  into  account  such  Lender's  policies  as to  capital  adequacy).
     "Change"  means  (i) any  change  after the date of this  Agreement  in the
     Risk-Based  Capital  Guidelines  or (ii) any  adoption  of or change in any
     other law, governmental or  quasi-governmental  rule,  regulation,  policy,
     guideline, interpretation, or directive (whether or not having the force of
     law) after the date of this  Agreement  which affects the amount of capital
     required  or  expected  to be  maintained  by any  Lender  or  any  Lending
     Installation or any corporation controlling any Lender. "Risk-Based Capital
     Guidelines"  means (i) the risk-based  capital  guidelines in effect in the
     United States on the date of this Agreement,  including  transition  rules,
     and (ii) the corresponding  capital  regulations  promulgated by regulatory
     authorities  outside the United States implementing the July 1988 report of
     the  Basle  Committee  on  Banking  Regulation  and  Supervisory  Practices
     Entitled  "International  Convergence of Capital  Measurements  and Capital
     Standards,"   including  transition  rules,  and  any  amendments  to  such
     regulations adopted prior to the date of this Agreement.

          3.3.  Availability of Types of Advances. If any Lender determines that
     maintenance  of its Fixed  Rate Loans at a  suitable  Lending  Installation
     would violate any applicable law, rule, regulation,  or directive,  whether
     or not having the force of law, or if the Required  Lenders  determine that
     (i)  deposits of a type and maturity  appropriate  to match fund Fixed Rate
     Advances are not available or (ii) the interest  rate  applicable to a Type
     of Advance does not  accurately  reflect the cost of making or  maintaining
     such Advance, then the Agent shall suspend the availability of the affected
     Type of Advance and require any Fixed Rate Advances of the affected Type to
     be repaid.

          3.4. Funding  Indemnification.  If any payment of a Fixed Rate Advance
     occurs  on a date  which  is not the last  day of the  applicable  Interest
     Period,  whether  because of  acceleration,  prepayment or otherwise,  or a
     Fixed Rate is not made on the date specified by the


                                Page 109 of 200
<PAGE>

     Borrower for any reason  other than  default by the  Lenders,  the Borrower
     will  indemnify  each Lender for any loss or cost  incurred by it resulting
     therefrom,  including,  without limitation, any loss or cost in liquidating
     or employing deposits acquired to fund or maintain the Fixed Rate Advance.

          3.5.  Lender  Statements;   Survival  of  Indemnity.   To  the  extent
     reasonably  possible,  each Lender shall  designate  an  alternate  Lending
     Installation  with  respect  to its Loans to reduce  any  liability  of the
     Borrower  to  such  Lender  under  Sections  3.1 and  3.2 or to  avoid  the
     unavailability  of a Type of Advance  under  Section  3.3,  so long as such
     designation  is not  disadvantageous  to such  Lender.  Each  Lender  shall
     deliver a written  statement of such Lender to the Borrower (with a copy to
     the Agent) as to the amount due, if any,  under  Section  3.1,  3.2 or 3.4.
     Such  written   statement   shall  set  forth  in  reasonable   detail  the
     calculations  upon which such  Lender  determined  such amount and shall be
     final,  conclusive  and binding on the  Borrower in the absence of manifest
     error.  Determination  of amounts payable under such Sections in connection
     with a Eurodollar Loan shall be calculated as though each Lender funded its
     Eurodollar  Loan through the purchase of a deposit of the type and maturity
     corresponding  to the  deposit  used  as a  reference  in  determining  the
     Eurodollar Rate  applicable to such Loan,  whether in fact that is the case
     or not.  Unless  otherwise  provided  herein,  the amount  specified in the
     written statement of any Lender shall be payable on demand after receipt by
     the Borrower of such written  statement.  The  obligations  of the Borrower
     under  Sections 3.1, 3.2 and 3.4 shall survive  payment of the  Obligations
     and termination of this Agreement.



                                   ARTICLE IV

                 CONDITIONS PRECEDENT; WITHHOLDING TAX EXEMPTION
                 -----------------------------------------------


          4.1.  Initial  Advance.  The Lenders shall not be required to make the
     initial  Advance  hereunder  unless the Borrower has furnished to the Agent
     with sufficient copies for the Lenders:

          (i)  Copies of the  articles of  incorporation  of the Borrower and of
               each Restricted Subsidiary which is a corporation,  together with
               all amendments,  and a certificate of good standing for each such
               entity, each certified by the appropriate governmental officer in
               its jurisdiction of incorporation,  and copies of the partnership
               agreement and any  partnership  certificate or other  significant
               governing  document  of each  Restricted  Subsidiary  which  is a
               partnership,  each  certified  by the  Secretary  or an Assistant
               Secretary of each such partnership.

          (ii) Copies, (x) certified by the Secretary or Assistant  Secretary of
               the  Borrower  and  of  each  Restricted  Subsidiary  which  is a


                                Page 110 of 200
<PAGE>

               corporation,  respectively,  of its  by-laws  and of its Board of
               Directors'  resolutions (and resolutions of other bodies,  if any
               are deemed  necessary by counsel for any Lender)  authorizing the
               execution  of the Loan  Documents to which such entity is a party
               and (y) certified by the Secretary or Assistant Secretary of each
               Restricted Subsidiary which is a partnership,  of any partnership
               actions  authorizing the execution of the Loan Documents to which
               such entity is a party.

          (iii)Incumbency  certificates,  executed by the Secretary or Assistant
               Secretary  of the  Borrower  and of each  Restricted  Subsidiary,
               which shall  identify by name and title and bear the signature of
               the officers of such entity authorized to sign the Loan Documents
               to which it is a party and (in the case of the  Borrower) to make
               borrowings  hereunder,  upon which certificates the Agent and the
               Lenders shall be entitled to rely until informed of any change in
               writing by the  Borrower or by a  Restricted  Subsidiary,  as the
               case may be.

          (iv) A  certificate,  signed  by a  Senior  Financial  Officer  of the
               Borrower,  stating that on the initial  Borrowing Date no Default
               or  Unmatured   Default  has  occurred  and  is  continuing   and
               demonstrating  compliance,  on and as of  the  initial  Borrowing
               Date, with the provisions of Sections 6.18, 6.19 and 6.20.

          (v)  A written  opinion of the  Borrower's  counsel,  addressed to the
               Lenders in substantially the form of Exhibit "F" hereto.

          (vi) Ratable Notes and  Competitive  Bid Notes payable to the order of
               each of the Lenders.

          (vii)Written money transfer  instructions,  in substantially  the form
               of Exhibit  "I" hereto,  addressed  to the Agent and signed by an
               Authorized  Officer,  together  with  such  other  related  money
               transfer   authorizations   as  the  Agent  may  have  reasonably
               requested.

          (viii)The Subsidiary Guaranty.

          (ix) Complete  copies  of the  indentures,  loan  agreements  or other
               material  documents  evidencing  all Debt of the  Borrower or any
               Subsidiary  exceeding  $100,000 in aggregate  principal amount or
               aggregate  commitment  amount  (in the case of  revolving  credit
               facilities).

          (x)  A copy of the most recent reserve report of the type described in
               Section 6.1(g).

          (xi) Such  other  documents  as any  Lender  or its  counsel  may have
               reasonably requested.


                                Page 111 of 200
<PAGE>

          4.2.  Each  Advance.  The  Lenders  shall not be  required to make any
     Advance (other than an Advance that, after giving effect thereto and to the
     application of the proceeds thereof, does not increase the aggregate amount
     of outstanding Ratable Advances), unless on the applicable Borrowing Date:

          (i)  There exists no Default or Unmatured Default.

          (ii) The  representations  and  warranties  contained in Article V are
               true and correct as of such  Borrowing  Date except to the extent
               any such representation or warranty is stated to relate solely to
               an earlier  date, in which case such  representation  or warranty
               shall be true and correct on and as of such earlier date.

          (iii)All legal  matters  incident to the making of such Advance  shall
               be satisfactory to the Lenders and their counsel.

          Each  Borrowing  Notice  with  respect  to  each  such  Advance  shall
     constitute  a  representation   and  warranty  by  the  Borrower  that  the
     conditions  contained in Sections 4.2(i) and (ii) have been satisfied.  Any
     Lender may require a duly completed compliance certificate in substantially
     the form of Exhibit "G" hereto as a condition to making an Advance.

          4.3.  Withholding Tax Exemption.  At least five Business Days prior to
     the first date on which  interest  or fees are  payable  hereunder  for the
     account of any Lender,  each Lender that is not incorporated under the laws
     of the United States of America,  or a state  thereof,  agrees that it will
     deliver to each of the Borrower and the Agent two duly completed  copies of
     United States  Internal  Revenue  Service Form 1001 or 4224,  certifying in
     either case that such Lender is  entitled  to receive  payments  under this
     Agreement  and the Notes  without  deduction or  withholding  of any United
     States federal  income taxes.  Each Lender which so delivers a Form 1001 or
     4224  further  undertakes  to deliver to each of the Borrower and the Agent
     two additional  copies of such form (or a successor  form) on or before the
     date that such form expires (currently, three successive calendar years for
     Form 1001 and one calendar year for Form 4224) or becomes obsolete or after
     the occurrence of any event  requiring a change in the most recent forms so
     delivered  by it, and such  amendments  thereto or  extensions  or renewals
     thereof as may be  reasonably  requested by the  Borrower or the Agent,  in
     each case certifying that such Lender is entitled to receive payments under
     this Agreement and the Notes without deduction or withholding of any United
     States federal income taxes,  unless an event (including without limitation
     any change in treaty,  law or regulation) has occurred prior to the date on
     which any such delivery would  otherwise be required which renders all such
     forms  inapplicable or which would prevent such Lender from duly completing
     and delivering any such form with respect to it and such Lender advises the
     Borrower and the Agent that it is not capable of receiving payments without
     any deduction or withholding of United States federal income tax.


                                Page 112 of 200
<PAGE>

          4.4.  Replacement of Lenders.  In the event that any Lender shall have
     advised the Borrower that it is not capable of receiving payments hereunder
     without any deduction or  withholding  of United States federal income tax,
     the Borrower shall have the right, at its own expense,  upon notice to such
     Lender and to the Agent, to:

          (i)  require  such Lender to transfer  and assign,  at par and without
               recourse (in accordance  with and subject to the  restrictions of
               Section 12.3) all of its right, title,  interests and obligations
               under  this   Agreement  and  any  Loans  to  another   financial
               institution  approved by the Agent (which  approval  shall not be
               unreasonably   withheld),   which   assignee  shall  assume  such
               assigning  Lender's  obligations  under this Agreement,  provided
               that no such  assignment  shall be required to the extent that it
               would  violate  any  law,  rule,   regulation  or  order  of  any
               governmental authority; or

          (ii) terminate the Commitment of such Lender and prepay all Loans made
               by  such   Lender,   subject  to  the   payment  of  any  funding
               indemnification amounts required under Section 3.4.



                                    ARTICLE V

                         REPRESENTATIONS AND WARRANTIES
                         ------------------------------


         The Borrower represents and warrants to the Lenders that:

          5.1.  Organization;  Power and  Authority.  (a) The  Borrower (i) is a
     corporation duly organized, validly existing and in good standing under the
     laws  of the  State  of  Delaware;  (ii)  is duly  qualified  as a  foreign
     corporation  and is in good  standing  in each  jurisdiction  in which such
     qualification  is required  by law,  other than those  jurisdictions  as to
     which  the  failure  to be so  qualified  or in good  standing  could  not,
     individually or in the aggregate, reasonably be expected to have a Material
     Adverse  Effect;  and (iii) has the corporate power and authority to own or
     hold under lease the properties it purports to own or hold under lease,  to
     transact the business it transacts and proposes to transact, to execute and
     deliver  this  Agreement  and the  Notes  and to  perform  its  obligations
     hereunder and thereunder.

          (b) Each  Restricted  Subsidiary (i) is a corporation or a partnership
     duly organized, validly existing and in good standing under the laws of its
     jurisdiction of incorporation or organization;  (ii) is duly qualified as a
     foreign  corporation  or  partnership  and  is in  good  standing  in  each
     jurisdiction  in which such  qualification  is required by law,  other than
     those  jurisdictions  as to which the failure to be so qualified or in good
     standing  could  not,  individually  or in  the  aggregate,  reasonably  be
     expected to have a Material Adverse Effect;  and (iii) has the corporate or


                                Page 113 of 200
<PAGE>

     partnership  power and authority to own or hold under lease the  properties
     it  purports  to own or hold under  lease,  to  transact  the  business  it
     transacts and proposes to transact,  to execute and deliver the  Subsidiary
     Guaranty and to perform the provisions hereof and thereof.


          5.2. Authorization and Validity (a) The execution and delivery of this
     Agreement  and  the  Notes  and  the  performance  by the  Borrower  of its
     obligations  hereunder  and  thereunder  have been duly  authorized  by all
     necessary corporate action on the part of the Borrower,  and this Agreement
     constitutes,  and upon  execution  and  delivery  thereof  each  Note  will
     constitute,   a  legal,  valid  and  binding  obligation  of  the  Borrower
     enforceable  against the Borrower in accordance  with its terms,  except as
     such   enforceability   may  be  limited  by  (i)  applicable   bankruptcy,
     insolvency, reorganization,  moratorium or other similar laws affecting the
     enforcement of creditors'  rights generally and (ii) general  principles of
     equity  (regardless  of whether  such  enforceability  is  considered  in a
     proceeding in equity or at law).

          (b) The  execution  and  delivery of the  Subsidiary  Guaranty and the
     performance by each Restricted Subsidiary of its obligations thereunder has
     been duly  authorized by all necessary  corporate or partnership  action on
     the  part  of  each  Restricted  Subsidiary  and  the  Subsidiary  Guaranty
     constitutes  a legal,  valid  and  binding  obligation  of each  Restricted
     Subsidiary  enforceable  against such  Restricted  Subsidiary in accordance
     with  its  terms,  except  as such  enforceability  may be  limited  by (i)
     applicable  bankruptcy,  insolvency,  reorganization,  moratorium  or other
     similar laws affecting the enforcement of creditors'  rights  generally and
     (ii)   general   principles   of  equity   (regardless   of  whether   such
     enforceability is considered in a proceeding in equity or at law).

          5.3.  Accuracy  of  Information.  No  information,  exhibit  or report
     furnished by the Borrower or any of its Subsidiaries to the Agent or to any
     Lender in connection with the negotiation of, or compliance  with, the Loan
     Documents contained, as of the date of such information, exhibit or report,
     any  material  misstatement  of fact or omitted  to state a  material  fact
     necessary to make the statements  contained therein not misleading,  or any
     other material fact required  pursuant to the terms of this Agreement to be
     contained therein.

          5.4. Organization and Ownership of Shares of Restricted  Subsidiaries;
     Affiliates.  (a) Schedule 1 contains (except as noted therein) complete and
     correct  lists  of (i) the  Restricted  Subsidiaries,  showing,  as to each
     Restricted  Subsidiary,  the correct name thereof,  the jurisdiction of its
     organization  and the percentage of shares of each class of its outstanding
     capital stock or similar  equity  interests  owned by the Borrower and each
     other Restricted Subsidiary, and (ii) the Borrower's Affiliates (other than
     Restricted Subsidiaries).

          (b) All of the  outstanding  shares of capital stock or similar equity
     interests of each Restricted  Subsidiary shown in Schedule 1 as being owned
     by the Borrower and the Restricted  Subsidiaries  have been validly issued,
     are fully paid and  nonassessable  and are owned by the Borrower or another
     Restricted  Subsidiary  free and  clear of any Lien  (except  as  otherwise
     disclosed in Schedule 1).


                                Page 114 of 200
<PAGE>

          (c)  Each  Restricted   Subsidiary  identified  in  Schedule  1  is  a
     corporation or other legal entity duly organized,  validly  existing and in
     good standing under the laws of its  jurisdiction of  organization,  and is
     duly  qualified  as a foreign  corporation  or other legal entity and is in
     good standing in each jurisdiction in which such  qualification is required
     by law,  other than those  jurisdictions  as to which the  failure to be so
     qualified or in good standing could not,  individually or in the aggregate,
     reasonably  be  expected  to have a  Material  Adverse  Effect.  Each  such
     Restricted Subsidiary has the corporate or other power and authority to own
     or hold under lease the  properties  it purports to own or hold under lease
     and to transact the business it transacts and proposes to transact.

          (d) No Restricted  Subsidiary  is a party to, or otherwise  subject to
     any legal  restriction  or any agreement  (other than this  Agreement,  the
     agreements  listed on  Schedule  2 and  customary  limitations  imposed  by
     corporate or  partnership  law  statutes)  restricting  the ability of such
     Restricted  Subsidiary  to pay  dividends  out of profits or make any other
     similar  distributions  of profits to the Borrower or any of the Restricted
     Subsidiaries  that owns  outstanding  shares of  capital  stock or  similar
     equity or partnership interests of such Restricted Subsidiary.

          5.5. Financial Statements.  The March 31, 1996 consolidated  financial
     statements  of the  Borrower  and the  Restricted  Subsidiaries  heretofore
     delivered to the Lenders  (including in each case the related schedules and
     notes) present fairly, in all material respects, the consolidated financial
     position  of  the  Borrower  and  the  Restricted  Subsidiaries  as of  the
     respective dates specified  therein and the  consolidated  results of their
     operations and cash flows for the respective  periods so specified and have
     been prepared in accordance with generally accepted  accounting  principles
     in effect on the date such  statements were prepared  consistently  applied
     throughout  the periods  involved  except as set forth in the notes thereto
     (subject, in the case of any interim financial  statements,  to normal year
     end adjustments).

          5.6. Material Adverse Change.  Since March 31, 1996, there has been no
     change  in the  business,  Property,  prospects,  condition  (financial  or
     otherwise)  or results of  operations  of the Borrower  and the  Restricted
     Subsidiaries  which could reasonably be expected to have a Material Adverse
     Effect.

          5.7 No Conflict or  Violation.  Neither the  execution,  delivery  and
     performance  by the  Borrower  of this  Agreement  and the  Notes,  nor the
     execution,  delivery and  performance by any  Restricted  Subsidiary of the
     Subsidiary  Guaranty,  will (i)  contravene,  result in any  breach  of, or
     constitute  a  default  under,  or result  in the  creation  of any Lien in
     respect of any Property of the Borrower or any Restricted Subsidiary under,
     any indenture, mortgage, deed of trust, loan, purchase or credit agreement,
     lease,  corporate  charter  or  by-laws,  partnership  agreement  or  other
     significant  governing  document,  or any other  agreement or instrument to
     which the Borrower or any  Restricted  Subsidiary  is bound or by which the
     Borrower or any Restricted Subsidiary or any of their respective properties


                                Page 115 of 200
<PAGE>

     may be bound or affected,  (ii)  conflict with or result in a breach of any
     of the terms,  conditions or provisions of any order, judgment,  decree, or
     ruling of any court, arbitrator or Governmental Authority applicable to the
     Borrower or any Restricted Subsidiary or (iii) violate any provision of any
     statute  or  other  rule  or  regulation  of  any  Governmental   Authority
     applicable to the Borrower or any Restricted Subsidiary.

          5.8.   Governmental   Authorizations.    No   consent,   approval   or
     authorization  of,  or  registration,   filing  or  declaration  with,  any
     Governmental  Authority  is  required  in  connection  with the  execution,
     delivery or performance  (i) by the Borrower of this Agreement or the Notes
     or (ii) by any Restricted Subsidiary of the Subsidiary Guaranty.

          5.9.  Litigation;  Observance of Agreements,  Statutes and Orders. (a)
     Except  as  disclosed  in  Schedule  3,  there  are no  actions,  suits  or
     proceedings  pending  or,  to the  knowledge  of the  Borrower,  threatened
     against or  affecting  the  Borrower or any  Restricted  Subsidiary  or any
     Property  of the  Borrower  or any  Restricted  Subsidiary  in any court or
     before  any  arbitrator  of any  kind  or  before  or by  any  Governmental
     Authority  that,  individually  or in the  aggregate,  could  reasonably be
     expected to have a Material Adverse Effect.

          (b) Neither the Borrower nor any  Restricted  Subsidiary is in default
     under any term of any  agreement or instrument to which it is a party or by
     which it is bound, or any order,  judgment,  decree or ruling of any court,
     arbitrator or  Governmental  Authority or is in violation of any applicable
     law,   ordinance,   rule  or  regulation   (including   without  limitation
     Environmental  Laws)  of  any  Governmental  Authority,  which  default  or
     violation,  individually or in the aggregate,  could reasonably be expected
     to have a Material Adverse Effect.

          5.10.  Taxes. The Borrower and the Restricted  Subsidiaries have filed
     all tax returns that are  required to have been filed in any  jurisdiction,
     and have paid all taxes shown to be due and payable on such returns and all
     other taxes and assessments  levied upon them or their properties,  assets,
     income or franchises,  to the extent such taxes and assessments have become
     due and  payable and before  they have  become  delinquent,  except for any
     taxes and assessments (i) the amount of which is not individually or in the
     aggregate  Material or (ii) the amount,  applicability or validity of which
     is currently being  contested in good faith by appropriate  proceedings and
     with respect to which the Borrower or a Restricted Subsidiary,  as the case
     may be, has  established  adequate  reserves in accordance  with  generally
     accepted  accounting  principles.  The  Borrower  knows of no basis for any
     other  tax or  assessment  that  could  reasonably  be  expected  to have a
     Material Adverse Effect. The charges, accruals and reserves on the books of
     the Borrower and the Restricted  Subsidiaries in respect of Federal,  state
     or other taxes for all fiscal periods are adequate.  The Federal income tax
     liabilities  of the  Borrower  and the  Restricted  Subsidiaries  have been
     determined by the Internal Revenue Service and paid for all fiscal years up
     to and including the fiscal year ended December 31, 1989.

          5.11.  Title to Property;  Leases.  The  Borrower  and the  Restricted
     Subsidiaries have good and sufficient title to their respective  properties


                                Page 116 of 200
<PAGE>

     that  individually or in the aggregate are Material,  in each case free and
     clear of Liens prohibited by this Agreement.  All leases that  individually
     or in the aggregate are Material are valid and  subsisting  and are in full
     force and effect in all material respects.

          5.12. Licenses, Permits, etc. Except as disclosed in Schedule 4:

               (a) the Borrower and the Restricted  Subsidiaries  own or possess
          all   licenses,   permits,   franchises,   authorizations,    patents,
          copyrights,  service  marks,  trademarks  and trade  names,  or rights
          thereto,  with  respect to the  business  of the  Borrower  and/or any
          Restricted Subsidiary as currently conducted,  that individually or in
          the aggregate are Material,  without known conflict with the rights of
          others;

               (b) to the best  knowledge  of the  Borrower,  no  product of the
          Borrower  or any  Restricted  Subsidiary  infringes  in  any  material
          respect upon any license, permit,  franchise,  authorization,  patent,
          copyright, service mark, trademark, trade name or other right owned by
          any other Person; and

               (c) to the best knowledge of the Borrower,  there is no violation
          by  any  Person  of  any  right  of the  Borrower  or  any  Restricted
          Subsidiary  with  respect  to any  patent,  copyright,  service  mark,
          trademark,  trade name or other right owned or used by the Borrower or
          any Restricted  Subsidiary  which,  individually  or in the aggregate,
          could reasonably be expected to have a Material Adverse Effect.

               5.13.  Compliance  with ERISA.  (a) The  Borrower  and each ERISA
          Affiliate have operated and administered  each Plan in compliance with
          all applicable laws except for such instances of noncompliance as have
          not  resulted in and could not  reasonably  be expected to result in a
          Material Adverse Effect.  Neither the Borrower nor any ERISA Affiliate
          has incurred any  liability  pursuant to Title I or IV of ERISA or the
          penalty or excise tax  provisions  of the Code  relating  to  employee
          benefit  plans  (as  defined  in  Section 3 of  ERISA),  and no event,
          transaction or condition has occurred or exists that could  reasonably
          be expected to result in the  incurrence of any such  liability by the
          Borrower or any ERISA  Affiliate,  or in the imposition of any Lien on
          any of the rights,  properties  or assets of the Borrower or any ERISA
          Affiliate,  in either  case  pursuant  to Title I or IV of ERISA or to
          such penalty or excise tax provisions or to Section  401(a)(29) or 412
          of the  Code,  other  than such  liabilities  or Liens as would not be
          individually or in the aggregate Material.

               (b) The  present  value of all (vested  and  unvested)  aggregate
          accrued benefit  liabilities  under each of the Single Employer Plans,
          determined as of the end of such Plan's most recently  ended plan year
          on the  basis  of the  actuarial  assumptions  specified  for  funding
          purposes in such Plan's most recent actuarial  valuation  report,  did
          not  exceed  the  aggregate  current  value of the assets of such Plan
          allocable to such benefit liabilities.  The term "benefit liabilities"
          has the  meaning  specified  in  section  4001 of ERISA  and the terms
          "current  value" and  "present  value" have the meaning  specified  in
          section 3 of ERISA.


                                Page 117 of 200
<PAGE>

               (c) The  Borrower  and its  ERISA  Affiliates  have not  incurred
          withdrawal  liabilities (and are not subject to contingent  withdrawal
          liabilities)  under  section  4201 or  4204 of  ERISA  in  respect  of
          Multiemployer   Plans  that  individually  or  in  the  aggregate  are
          Material.

               (d) The expected postretirement benefit obligation (determined as
          of the last day of the  Borrower's  most recently ended fiscal year in
          accordance  with Financial  Accounting  Standards  Board Statement No.
          106,  without  regard  to  liabilities  attributable  to  continuation
          coverage  mandated by section  4980B of the Code) of the  Borrower and
          the Restricted Subsidiaries is not Material.

               (e) The  Borrower is not an entity  deemed to hold "plan  assets"
          within the meaning of 29 C.F.R. ss.  2510.3-101 of an employee benefit
          plan (as defined in Section 3(3) of ERISA) which is subject to Title I
          of ERISA or any plan (within the meaning of Section 4975 of the Code).
          The  execution  and delivery of this  Agreement  and the Notes and the
          performance  by  the  Borrower  of  its   obligations   hereunder  and
          thereunder  will not  involve any  transaction  that is subject to the
          prohibitions of section 406 of ERISA or in connection with which a tax
          could be imposed  pursuant to section  4975(c)(1)(A)-(D)  of the Code.
          The  representation  by the  Borrower  in the first  sentence  of this
          Section  5.13(e) is made in reliance  upon and subject to the accuracy
          of the representation by each Lender in Section 9.15 as to the sources
          of the funds used to make Advances hereunder.

               (f)  Schedule 5 lists all ERISA  Affiliates  that are  Restricted
          Subsidiaries  and that  maintain  one or more  Plans and any  employee
          organizations in respect of any Multiemployer Plan or Plan. Schedule 5
          sets forth all ERISA Affiliates and all "employee  benefit plans" with
          respect to which the Borrower or any  "affiliate" of the Borrower is a
          "party-in-interest"  or in respect of which the Notes could constitute
          an "employer security"  ("employee benefit plan,"  "party-in-interest"
          and "employee  organization"  have the meanings specified in section 3
          of ERISA,  "affiliate" has the meaning  specified in section 407(d) of
          ERISA and Section V of the Department of Labor Prohibited  Transaction
          Exemption 95-60 (60 FR 35925,  July 12, 1995) and "employer  security"
          has the meaning specified in section 407(d) of ERISA).

               5.14. Margin  Regulations.  Margin stock does not constitute more
          than twenty percent (20%) of the value of the  consolidated  assets of
          the Borrower and the Restricted Subsidiaries and the Borrower does not
          have any present intention that margin stock will constitute more than
          twenty  percent  (20%) of the  value of such  assets.  As used in this
          Section,  the terms "margin stock" and "purpose of buying or carrying"
          shall have the meanings assigned to them in said Regulation U.

               5.15.  Existing  Debt;  Future  Liens.  (a)  Except as  described
          therein,  Schedule  6 sets forth a complete  and  correct  list of all
          outstanding  Debt (in excess of $100,000  outstanding) of the Borrower
          and the  Restricted  Subsidiaries  as of July 15, 1996,  and as of the
          date hereof there has been no material change in the amounts, interest
          rates,  sinking funds,  installment payments or maturities of the Debt
          of the Borrower or the Restricted Subsidiaries since July 15, 1996.


                                Page 118 of 200
<PAGE>

               (b) Except as  disclosed  in Schedule 6, neither the Borrower nor
          any  Restricted  Subsidiary has agreed or consented to cause or permit
          in the future (upon the happening of a contingency  or otherwise)  any
          of its  Property,  whether  now  owned or  hereafter  acquired,  to be
          subject to a Lien not permitted by Section 6.15.

               5.16. Status under Certain Statutes. Neither the Borrower nor any
          Restricted  Subsidiary is subject to regulation  under the  Investment
          Company Act of 1940, as amended,  the Public Utility  Holding  Company
          Act of 1935,  as amended,  the  Transportation  Acts (49  U.S.C.),  as
          amended, or the Federal Power Act, as amended.

               5.17.  Environmental  Matters.  (a) Neither the  Borrower nor any
          Restricted  Subsidiary  has knowledge of any claim or has received any
          notice of any claim, and no proceeding has been instituted raising any
          claim against the Borrower or any of the  Restricted  Subsidiaries  or
          any of their respective real properties now or formerly owned,  leased
          or operated by any of them or other assets, alleging any damage to the
          environment or violation of any  Environmental  Laws,  except, in each
          case, such as could not reasonably be expected to result in a Material
          Adverse Effect. Except as otherwise disclosed to you in writing,

                    (i)  neither  the  Borrower   nor  any  of  the   Restricted
               Subsidiaries  has knowledge of any facts which would give rise to
               any claim,  public or private, of violation of Environmental Laws
               or damage to the environment  emanating from,  occurring on or in
               any way related to real properties now or formerly owned,  leased
               or  operated  by any of them or to other  assets  or  their  use,
               except, in each case, such as could not reasonably be expected to
               result in a Material Adverse Effect;

                    (ii)  neither  the  Borrower  nor  any  of  the   Restricted
               Subsidiaries   has  stored  any   Hazardous   Materials  on  real
               properties  now or formerly  owned,  leased or operated by any of
               them or has  disposed  of any  Hazardous  Materials  in a  manner
               contrary  to any  Environmental  Laws in each case in any  manner
               that could reasonably be expected to result in a Material Adverse
               Effect; and

                    (iii) all buildings on all real properties now owned, leased
               or operated by the Borrower or any of the Restricted Subsidiaries
               are in compliance  with  applicable  Environmental  Laws,  except
               where  failure to comply  could not  reasonably  be  expected  to
               result in a Material Adverse Effect.


                                Page 119 of 200
<PAGE>

                                   ARTICLE VI

                                   COVENANTS
                                   ---------


     During  the term of this  Agreement,  unless  the  Required  Lenders  shall
otherwise consent in writing:

     6.1. Financial Reporting.  The Borrower will maintain,  for itself and each
Subsidiary,  a system of accounting  established and  administered in accordance
with generally accepted accounting principles, and furnish to the Lenders:

          (a) Quarterly  Statements - within  forty-five (45) days after the end
     of each quarterly  fiscal period in each fiscal year of the Borrower (other
     than the last quarterly fiscal period of each such fiscal year),  duplicate
     copies of,

               (i)   consolidated   balance  sheets  of  the  Borrower  and  its
          consolidated  Subsidiaries,  and of the  Borrower  and its  Restricted
          Subsidiaries, as at the end of such quarter, and

               (ii) consolidated statements of operations,  stockholders' equity
          and cash flows of the Borrower and its consolidated Subsidiaries,  and
          of the Borrower and its Restricted Subsidiaries,  for such quarter and
          (in the case of the second and third  quarters) for the portion of the
          fiscal year ending with such quarter,

     setting  forth  in each  case  in  comparative  form  the  figures  for the
     corresponding  periods  in the  previous  fiscal  year,  all in  reasonable
     detail,   prepared  in  accordance  with  Agreement  Accounting  Principles
     applicable to quarterly financial statements generally,  and certified by a
     Senior Financial Officer as fairly  presenting,  in all material  respects,
     the financial position of the companies being reported on and their results
     of operations  and cash flows,  subject to changes  resulting from year end
     adjustments,  provided  that,  so long as the  Borrower  shall not have any
     Unrestricted Subsidiaries,  delivery within the time period specified above
     of copies of the  Borrower's  Quarterly  Report  on Form 10-Q  prepared  in
     compliance with the requirements therefor and filed with the Securities and
     Exchange  Commission  shall be deemed to satisfy the  requirements  of this
     Section 6.1(a).

          (b) Annual  Statements - within ninety (90) days after the end of each
     fiscal year of the Borrower, duplicate copies of,

               (i)   consolidated   balance  sheets  of  the  Borrower  and  its
          consolidated  Subsidiaries,  and of the  Borrower  and its  Restricted


                                Page 120 of 200
<PAGE>

          Subsidiaries, as at the end of such year, and

               (ii) consolidated statements of operations,  stockholders' equity
          and cash flows of the Borrower and its consolidated Subsidiaries,  and
          of the  Borrower  and its  Restricted  Subsidiaries,  for  such  year,
          setting  forth in each case in  comparative  form the  figures for the
          previous fiscal year, all in reasonable detail, prepared in accordance
          with Agreement Accounting Principles, and accompanied by

                    (A) an  opinion  thereon  of  independent  certified  public
               accountants of recognized national standing,  which opinion shall
               state  that such  financial  statements  present  fairly,  in all
               material respects,  the financial position of the companies being
               reported upon and their results of operations  and cash flows and
               have  been  prepared  in  conformity  with  Agreement  Accounting
               Principles    (except   for   the   exclusion   of   Unrestricted
               Subsidiaries,  if  any,  from  the  financial  statements  of the
               Borrower  and  the   Restricted   Subsidiaries),   and  that  the
               examination of such accountants in connection with such financial
               statements has been made in accordance  with  generally  accepted
               auditing  standards,  and that such audit  provides a  reasonable
               basis for such opinion in the circumstances, and

                    (B) a certificate of such accountants stating that they have
               reviewed this Agreement and stating  further  whether,  in making
               their  audit,  they have become  aware of any  condition or event
               that then constitutes a Default or an Unmatured Default,  and, if
               they are aware  that any such  condition  or event  then  exists,
               specifying  the nature and period of the  existence  thereof  (it
               being  understood  that such  accountants  shall  not be  liable,
               directly or  indirectly,  for any failure to obtain  knowledge of
               any Default or Unmatured  Default unless such accountants  should
               have obtained  knowledge thereof in making an audit in accordance
               with generally  accepted auditing  standards or did not make such
               an audit),

          provided that, so long as the Borrower shall not have any Unrestricted
          Subsidiaries,  the delivery within the time period  specified above of
          the  Borrower's  Annual  Report  on Form  10-K  for such  fiscal  year
          (together with the Borrower's  annual report to shareholders,  if any,
          prepared  pursuant to Rule 14a-3 under the Exchange  Act)  prepared in
          accordance  with  the   requirements   therefor  and  filed  with  the
          Securities  and Exchange  Commission,  together with the  accountants'
          certificates  described in clauses (A) and (B) above,  shall be deemed
          to satisfy the requirements of this Section 6.1(b).

          (c) SEC and Other  Reports - promptly upon their  becoming  available,
     one copy of


                                Page 121 of 200
<PAGE>

               (i) each financial statement,  report,  notice or proxy statement
          sent by the Borrower or any Restricted Subsidiary to public securities
          holders generally, and

               (ii) (A) each  regular  or  periodic  report,  each  registration
               statement (without exhibits except as expressly  requested by the
               Agent or any  Lender),  and each  prospectus  and all  amendments
               thereto filed by the Borrower or any Restricted  Subsidiary  with
               the Securities and Exchange Commission, and

                    (B)  by  facsimile   only,  all  press  releases  and  other
               statements  made  available  generally  by  the  Borrower  or any
               Restricted Subsidiary to the public concerning  developments that
               are Material.

          (d) Audit Reports - as soon as  practicable  after receipt  thereof by
     the Borrower or any  Subsidiary,  a copy of each other report  submitted to
     the Borrower or any Subsidiary by its independent accountants in connection
     with any interim or special audit made by them of the books of the Borrower
     or any Subsidiary.

          (e)  Litigation  - within  five (5) days  after the  Borrower  obtains
     knowledge thereof, written notice of any pending or threatened (in writing)
     (i)  litigation  not fully covered by insurance or as to which an insurance
     company has not accepted liability or (ii) governmental proceeding, in each
     case  against  the  Borrower  or any  Restricted  Subsidiary,  in which the
     damages sought exceed One Million Dollars ($1,000,000),  individually or in
     the aggregate,  or which otherwise  could  reasonably be expected to have a
     Material Adverse Effect.

          (f) Notice of  Default or  Unmatured  Default -  promptly,  and in any
     event within five (5) days after a  Responsible  Officer shall become aware
     of the existence of any Default or Unmatured Default or that any Person has
     given any notice or taken any  action  with  respect  to a claimed  default
     hereunder  or that any Person has given any notice or taken any action with
     respect to a claimed  default  of the type  referred  to in Section  7.5, a
     written notice  specifying  the nature and period of existence  thereof and
     what  action  the  Borrower  is taking  or  proposes  to take with  respect
     thereto.

          (g) Oil and Gas Reserve Reports - promptly,  and in any event no later
     than  April 1 in each  year,  engineering  reports  in form  and  substance
     reasonably  satisfactory to the Required  Lenders,  certified by Forrest A.
     Garb & Associates,  Inc. (or any other nationally or regionally  recognized
     independent  consulting  petroleum  engineers)  as  fairly  and  accurately
     setting forth:

               (i)  the  proven  and  producing,   shut-in,   behind-pipe,   and
          undeveloped  oil and gas reserves  (separately  classified as such) of


                                Page 122 of 200
<PAGE>

          the Borrower and its  Restricted  Subsidiaries  as of January 1 of the
          year for which such reserve reports are furnished,

               (ii) the  aggregate  present  value of the future net income with
          respect  to such  reserves  discounted  at a stated  per annum  annual
          discount rate,

               (iii) projections of the annual rate of production, gross income,
          and net income with respect to such proven and producing reserves, and

               (iv) information with respect to the "take-or-pay," "prepayment,"
          and  gas-balancing  liabilities  of the  Borrower  and its  Restricted
          Subsidiaries.

          (h) ERISA  Matters - (i)  promptly,  and in any event  within five (5)
     days  after  a  Responsible  Officer  shall  become  aware  of  any  of the
     following,  a written  notice  setting  forth the  nature  thereof  and the
     action,  if any, that the Borrower or an ERISA  Affiliate  proposes to take
     with respect thereto:

                    (A) with  respect  to any Plan,  any  reportable  event,  as
               defined  in  section   4043(b)  of  ERISA  and  the   regulations
               thereunder, for which notice thereof has not been waived pursuant
               to such regulations as in effect on the date hereof; or

                    (B) the  taking  by the PBGC of steps to  institute,  or the
               threatening by the PBGC of the institution of,  proceedings under
               section 4042 of ERISA for the  termination of, or the appointment
               of a trustee  to  administer,  any Plan,  or the  receipt  by the
               Borrower or any ERISA  Affiliate of a notice from a Multiemployer
               Plan that such action has been taken by the PBGC with  respect to
               such Multiemployer Plan; or

                    (C) any event, transaction or condition that could result in
               the  incurrence  of any  liability  by the  Borrower or any ERISA
               Affiliate  pursuant  to Title or IV of  ERISA or the  penalty  or
               excise tax  provisions of the Code  relating to employee  benefit
               plans,  or in the  imposition  of any Lien on any of the  rights,
               properties  or assets  of the  Borrower  or any  ERISA  Affiliate
               pursuant to Title I or IV of ERISA or such  penalty or excise tax
               provisions,  if such  liability or Lien,  taken together with any
               other such  liabilities or Liens then existing,  could reasonably
               be expected to have a Material Adverse Effect; and

               (ii)  within 270 days after the close of each  fiscal year of the
          Borrower,  a  statement  of the  Unfunded  Liabilities  of each Single
          Employer  Plan,  certified  as correct by an  actuary  enrolled  under
          ERISA.


                                Page 123 of 200
<PAGE>

          (i) Notices from Governmental  Authority - promptly,  and in any event
     within thirty (30) Business Days of receipt  thereof,  copies of any notice
     to the Borrower or any  Subsidiary  from any Federal or state  Governmental
     Authority relating to any order, ruling, statute or other law or regulation
     (including,  without limitation, (x) any notice or claim to the effect that
     the Borrower or any of its  Subsidiaries  is or may be liable to any Person
     as a result of the release by the Borrower, any of its Subsidiaries, or any
     other  Person  of any  toxic  or  hazardous  waste  or  substance  into the
     environment,  and (y) any notice  alleging  any  violation  of any federal,
     state or local  environmental,  health or safety law or  regulation  by the
     Borrower or any of its  Subsidiaries)  that could reasonably be expected to
     have a Material Adverse Effect.

          (j)  Incurrence  of Debt - promptly,  and in any event within ten (10)
     Business Days of the  incurrence  thereof,  notice of the incurrence by the
     Borrower or any  Restricted  Subsidiary of any Debt which would be included
     in the  calculation of the Debt to Cash Flow from Operations  Ratio,  which
     notice shall set forth the aggregate  principal amount,  maturity and other
     significant terms of such Debt.

          (k) Requested  Information - with  reasonable  promptness,  such other
     data  and  information  relating  to  the  business,  operations,  affairs,
     financial  condition,  assets or  properties  of the Borrower or any of the
     Restricted  Subsidiaries  or  relating  to the  ability of the  Borrower to
     perform its obligations  hereunder and under the Notes as from time to time
     may be reasonably  requested by the Agent or any Lender including,  without
     limitation,  information required by 17 C.F.R. ss.230.144A, as amended from
     time to time.

     6.2.  Officer's  Certificate.  Each set of financial  statements  delivered
pursuant to Section  6.1(a) or Section  6.1(b) hereof shall be  accompanied by a
certificate of a Senior Financial Officer setting forth:

          (a)  Covenant   Compliance  -  the  information   (including  detailed
     calculations)  required in order to  establish  whether the Borrower was in
     compliance with the requirements of Sections 6.12 through 6.15,  inclusive,
     and 6.18 through  6.20,  inclusive,  during the  quarterly or annual period
     covered by the statements then being  furnished  (including with respect to
     each such Section,  where  applicable,  the  calculations of the maximum or
     minimum amount, ratio or percentage,  as the case may be, permissible under
     the terms of such Sections,  and the  calculation  of the amount,  ratio or
     percentage then in existence); and

          (b) Default or Unmatured  Default - a statement  that such officer has
     reviewed  the  relevant  terms  hereof and has made,  or caused to be made,
     under his or her  supervision,  a review of the transactions and conditions
     of the Borrower and the Subsidiaries from the beginning of the quarterly or
     annual period covered by the statements then being furnished to the date of


                                Page 124 of 200
<PAGE>

     the certificate and that such review shall not have disclosed the existence
     during such period of any condition or event that  constitutes a Default or
     an Unmatured  Default or, if any such  condition or event existed or exists
     (including,  without limitation, any such event or condition resulting from
     the  failure  of  the  Borrower  or  any  Subsidiary  to  comply  with  any
     Environmental  Law),  specifying the nature and period of existence thereof
     and what  action the  Borrower  shall have taken or  proposes  to take with
     respect thereto.

     6.3.  Use of  Proceeds.  The  Borrower  will apply the proceeds of Advances
hereunder for general  corporate  purposes.  No part of the proceeds of Advances
hereunder  will be used,  directly or  indirectly,  for the purpose of buying or
carrying  any margin  stock  within the meaning of  Regulation  U or to make any
Acquisition other than a Friendly Acquisition.

     6.4. Corporate or Partnership Existence;  Conduct of Business. The Borrower
will at all times  preserve  and keep in full  force and  effect  its  corporate
existence.  Subject to Sections  6.13 and 6.14,  the Borrower  will at all times
preserve and keep in full force and effect the corporate or partnership  (as the
case may be)  existence  of each of the  Subsidiaries  (unless  merged  into the
Borrower or a Subsidiary)  and all rights and franchises of the Borrower and the
Subsidiaries unless, in the good faith judgment of the Borrower, the termination
of or failure to  preserve  and keep in full  force and  effect  such  corporate
existence,  right or  franchise  could not,  individually  or in the  aggregate,
reasonably be expected to have a Material  Adverse  Effect (which term shall not
(for the  purpose  of this  Section  6.4  only)  include,  with  respect  to any
Restricted  Subsidiary,  the  termination  of or failure to preserve and keep in
full  force  and  effect  such  corporate  or  partnership  existence,  right or
franchise  that would render such  Restricted  Subsidiary  unable to perform its
obligations  under the Subsidiary  Guaranty,  and therefore result in a Material
Adverse  Effect,  only under clause (iii) of the  definition of such term).  The
Borrower will not, and will not permit any of the Subsidiaries to, engage in any
business if, as a result,  the Borrower and the Subsidiaries,  taken as a whole,
would not be engaged  primarily in the  provision of (i) seismic data  services,
(ii)  exploration  for, and  development and ownership of, gas and oil reserves,
(iii) gas marketing and (iv) businesses related to the foregoing businesses.

     6.5. Pari Passu.  The Borrower  covenants that its  Obligations  under this
Agreement  and the Notes do and will rank at least pari passu with all its other
present and future unsecured Senior Debt.

     6.6.  Subsidiary  Guaranty..  The Borrower will cause each Subsidiary which
becomes a Restricted  Subsidiary after the date of this Agreement to execute and
deliver  to the  Agent,  with a copy  for  each  Lender,  a copy of the  Joinder
Agreement  in the form  attached  to the  Subsidiary  Guaranty  as Annex I, duly
executed by such Subsidiary, together with an opinion of counsel satisfactory to
the  Required  Lenders  addressing  with respect to such  Subsidiary  the issues
relating  to  Subsidiaries  and the  Subsidiary  Guaranty in the form of opinion
attached hereto as Exhibit "K".


                                Page 125 of 200
<PAGE>

     6.7. Payment of Taxes and Claims.  The Borrower will and will cause each of
the  Subsidiaries  to  file  all  tax  returns  required  to  be  filed  in  any
jurisdiction  and to pay and  discharge all taxes shown to be due and payable on
such returns and all other taxes,  assessments,  governmental charges, or levies
imposed on them or any of their properties, assets, income or franchises, to the
extent  such taxes and  assessments  have become due and payable and before they
have become delinquent and all claims for which sums have become due and payable
that have or might become a Lien on  properties or assets of the Borrower or any
Subsidiary,  provided that neither the Borrower nor any Subsidiary  need pay any
such tax or  assessment or claims if (i) the amount,  applicability  or validity
thereof is  contested by the  Borrower or such  Subsidiary  on a timely basis in
good faith and in appropriate  proceedings,  and the Borrower or such Subsidiary
has established adequate reserves therefor in accordance with generally accepted
accounting  principles  on the books of the Borrower or such  Subsidiary or (ii)
the  nonpayment of all such taxes and  assessments  in the  aggregate  could not
reasonably be expected to have a Material Adverse Effect.

     6.8.  Insurance.  The Borrower will and will cause each of the Subsidiaries
to maintain,  with  financially  sound and reputable  insurers,  insurance  with
respect to their  respective  properties and businesses  against such casualties
and  contingencies,  of such types, on such terms and in such amounts (including
deductibles,   co-insurance  and   self-insurance,   if  adequate  reserves  are
maintained  with  respect  thereto) as is  customary  in the case of entities of
established  reputations engaged in the same or a similar business and similarly
situated, except to the extent that the failure to maintain such insurance could
not, individually or in the aggregate, reasonably be expected to have a Material
Adverse Effect.

     6.9.  Compliance  with Laws.  The Borrower  will and will cause each of the
Subsidiaries  to  comply  with all laws,  ordinances  or  governmental  rules or
regulations  to which each of them is subject,  including,  without  limitation,
Environmental  Laws,  and will  obtain  and  maintain  in effect  all  licenses,
certificates,   permits,   franchises  and  other  governmental   authorizations
necessary to the ownership of their  respective  properties or to the conduct of
their respective businesses, in each case to the extent necessary to ensure that
non-compliance  with such laws,  ordinances or governmental rules or regulations
or  failures  to  obtain or  maintain  in effect  such  licenses,  certificates,
permits,   franchises   and  other   governmental   authorizations   could  not,
individually  or in the  aggregate,  reasonably  be  expected to have a Material
Adverse Effect.

     6.10.  Maintenance of Properties.  The Borrower will and will cause each of
the Subsidiaries to maintain and keep, or cause to be maintained and kept, their
respective  properties in good repair,  working order and condition  (other than
ordinary wear and tear), so that the business carried on in connection therewith
may be properly conducted at all times, provided that

          (a) no violation of this Section 6.10 shall be deemed to have occurred
     with respect to any Property of the Borrower or any  Subsidiary  damaged or


                                Page 126 of 200
<PAGE>

     destroyed  by a  casualty  occurrence,  so  long  as the  Borrower  or such
     Restricted  Subsidiary is  proceeding  diligently to repair or replace such
     Property, and

          (b) this Section shall not prevent the Borrower or any Subsidiary from
     discontinuing the operation and the maintenance of any of its properties if
     such  discontinuance  is  desirable  in the conduct of its business and the
     Borrower has concluded that such discontinuance could not,  individually or
     in the aggregate,  reasonably be expected to have a Material Adverse Effect
     (which term shall not, for the purpose of this clause (b) only, include the
     discontinuance   of  the   operation  and   maintenance   of  a  Restricted
     Subsidiary's properties that would render such Restricted Subsidiary unable
     to perform its  obligations  under the Subsidiary  Guaranty,  and therefore
     result  in a  Material  Adverse  Effect,  only  under  clause  (iii) of the
     definition of such term).

     6.11.  Inspection.  The Borrower  shall  permit the Agent,  each Lender and
their respective duly authorized representatives:

          (a) No Default - if no Default or Unmatured  Default  then exists,  at
     the expense of the Agent or such Lender and upon reasonable prior notice to
     the Borrower,  to visit the principal executive office of the Borrower,  to
     discuss  the  affairs,  finances  and  accounts  of the  Borrower  and  the
     Subsidiaries  with the  Borrower's  officers,  and (with the consent of the
     Borrower,  which consent will not be unreasonably withheld) its independent
     public accountants and its independent  petroleum engineers,  and (with the
     consent of the Borrower,  which consent will not be unreasonably  withheld)
     to  visit  the  other  offices  and  properties  of the  Borrower  and each
     Subsidiary,  all at such reasonable times as may be reasonably requested in
     writing,  provided  that any Lender or the Agent shall be permitted to make
     only two  inspections  per calendar year pursuant to the provisions of this
     subsection (a) (without  limitation of the  inspection  rights of any other
     Lender or the Agent); and

          (b) Default - if a Default or an Unmatured Default then exists, at the
     expense  of the  Borrower  to  visit  and  inspect  any of the  offices  or
     properties  of the  Borrower  or  any  Subsidiary,  to  examine  all  their
     respective  books of account,  records,  reports and other papers,  to make
     copies and extracts  therefrom,  and to discuss their  respective  affairs,
     finances and accounts with their respective  officers,  independent  public
     accountants and independent  petroleum engineers (and by this provision the
     Borrower  authorizes said accountants and engineers to discuss the affairs,
     finances and accounts of the  Borrower and the  Subsidiaries),  all at such
     times and as often as may be requested.

     6.12. Restricted Payments and Restricted Investments.  (a) Limitation.  The
Borrower will not, and will not permit any of the  Restricted  Subsidiaries  to,
directly  or  indirectly,  declare,  make or  incur  any  liability  to make any


                                Page 127 of 200
<PAGE>

Restricted  Payment  or make  or  authorize  any  Restricted  Investment  unless
immediately after giving effect to such action:

                    (i) the  sum of (x)  the  aggregate  amount  of  outstanding
               Restricted  Investments  (valued  immediately after such action),
               plus (y) the  aggregate  amount  of  Restricted  Payments  of the
               Borrower and the Restricted  Subsidiaries declared or made during
               the period  commencing on the date of this Agreement,  and ending
               on the date such Restricted  Payment or Restricted  Investment is
               declared or made, inclusive, would not exceed the sum of

                         (A) Ten Million Dollars ($10,000,000), plus

                         (B) fifty percent (50%) of Consolidated  Net Income for
                    the  period  commencing  July 1, 1995 and ending on the date
                    such  Restricted  Payment or such  Restricted  Investment is
                    declared or made (or minus 100% of  Consolidated  Net Income
                    for such period if  Consolidated  Net Income for such period
                    is a loss), plus

                         (C) the  aggregate  amount  of Net  Proceeds  of Common
                    Stock of the Borrower for such period; and

                    (ii) the Borrower could incur,  pursuant to Section 6.20, at
               least One Dollar ($1) of additional  Debt owing to a Person other
               than a Restricted Subsidiary; and

                    (iii) no Default or Unmatured Default would exist.

     (b) Time of Payment.  The Borrower  will not, nor will it permit any of the
Restricted  Subsidiaries to, authorize a Restricted  Payment that is not payable
within sixty (60) days of authorization.

     (c)  Investments  of  Subsidiaries.  Each Person which becomes a Restricted
Subsidiary  after the date of this Agreement will be deemed to have made, on the
date such Person becomes a Restricted Subsidiary,  all Restricted Investments of
such Person in existence on such date.  Investments in any Person that ceases to
be a Restricted  Subsidiary  after the date of this  Agreement (but in which the
Borrower or another Restricted  Subsidiary  continues to maintain an Investment)
will be deemed to have been made on the date on which such Person ceases to be a
Restricted Subsidiary.

     6.13. Merger and Consolidation.  The Borrower will not, and will not permit
any of the Restricted  Subsidiaries to, consolidate with or merge with any other
corporation or other entity or convey, transfer, spin-off or lease substantially
all of its  assets in a single  transaction  or series  of  transactions  to any
Person, except that:

     (a) a  Restricted  Subsidiary  may  consolidate  or merge with,  or convey,
transfer,  spin-off  or  lease  substantially  all of  its  assets  in a  single


                                Page 128 of 200
<PAGE>

transaction or series of transactions to, another  Restricted  Subsidiary or the
Borrower;

     (b) a Restricted Subsidiary may convey, transfer,  spin-off or lease all of
its assets in compliance with the provisions of Section 6.14; and

     (c) the Borrower may consolidate or merge with any Person so long as:

          (i)  the   Borrower  is  the   surviving   corporation   in  any  such
     consolidation or merger;

          (ii)  immediately  prior to, and  immediately  after giving effect to,
     such transaction, no Default or Unmatured Default would exist; and

          (iii)  immediately  after  giving  effect  to  such  transaction,  the
     Borrower would be permitted, pursuant to the provisions of Section 6.20, to
     incur at least One Dollar ($1) of  additional  Debt owing to a Person other
     than a Restricted Subsidiary.

     6.14. Sale of Assets. (a) The Borrower will not, and will not permit any of
the Restricted  Subsidiaries to, make any Transfer,  provided that the foregoing
restriction does not apply to a Transfer if:

          (i) the  Property  that is the  subject of such  Transfer  constitutes
     either:

               (A) inventory held for sale, or

               (B) equipment, fixtures, supplies or materials no longer required
          in the  operation of the  business of the Borrower or such  Restricted
          Subsidiary or that is obsolete,

     and,  in the case of any  Transfer  described  in clause (A) or clause (B),
     such Transfer is in the ordinary  course of business (an  "Ordinary  Course
     Transfer");

          (ii) either:

               (A) such Transfer is from a Restricted Subsidiary to the Borrower
          or a Wholly-Owned Restricted Subsidiary, or

               (B)  such  Transfer  is  from  the  Borrower  to  a  Wholly-Owned
          Restricted Subsidiary,

     so long as immediately  before and  immediately  after the  consummation of
     such transaction,  and after giving effect thereto, no Default or Unmatured


                                Page 129 of 200
<PAGE>

     Default  exists  or  would  exist  (each  such  Transfer,   an  "Intergroup
     Transfer," and, collectively with any Ordinary Course Transfers,  "Excluded
     Transfers"); or

          (iii)  such  Transfer  is  not an  Excluded  Transfer  and  all of the
     following conditions shall have been satisfied with respect thereto:

               (A) such Transfer  does not involve a Substantial  Portion of the
          Property of the Borrower and the Restricted Subsidiaries,

               (B) in the good faith opinion of the Borrower, the Transfer is in
          exchange for consideration  with a Fair Market Value at least equal to
          that of the Property  exchanged,  and is in the best  interests of the
          Borrower, and

               (C)  immediately  after  giving  effect  to such  transaction  no
          Default or Unmatured Default would exist.

     (b) Debt Prepayment Transfers and Reinvested Transfers.

          (i)   Notwithstanding   the   provisions  of  Section   6.14(a),   the
     determination of whether a Transfer  involves a Substantial  Portion of the
     Property of the Borrower and the  Restricted  Subsidiaries,  as provided in
     Section 6.14(a)(iii)(A), shall be made without taking into account the same
     proportion of the book value  attributable to the Property  subject to such
     Transfer as shall be equal to the proportion of the Net Asset Sale Proceeds
     Amount (the "Designated  Portion") to be applied either (A) to a prepayment
     of the Senior Notes pursuant to the terms thereof (a "Prepayment Transfer")
     or (B) within one hundred  eighty  (180) days of the  consummation  of such
     Transfer, to any acquisition of assets similar to the assets which were the
     subject of such  Transfer (a  "Reinvested  Transfer"),  as  specified in an
     Officer's  Certificate  delivered to the Agent and each Lender prior to, or
     contemporaneously with, the consummation of such Transfer.

          (ii) If,  notwithstanding the certificate referred to in the foregoing
     clause  (i),  the  Borrower  shall fail to apply the  entire  amount of the
     Designated  Portion  as  specified  in such  certificate  within the period
     stated in Section  6.14(b)(i),  the  computation  of whether such  Transfer
     involved a  Substantial  Portion of the  Property of the  Borrower  and the
     Restricted  Subsidiaries  shall  be  recomputed,  as of the  date  of  such
     Transfer,  by taking  into  account the same  proportion  of the book value
     attributable to the Property  subject to such Transfer as shall be equal to
     the proportion of the Net Asset Sale Proceeds  Amount  actually  applied to
     either a Prepayment  Transfer or a Reinvested  Transfer within such period.
     If, upon the  recomputation  provided for in the preceding  sentence,  such
     Transfer involved a Substantial Portion of the Property of the Borrower and
     the Restricted  Subsidiaries,  an Unmatured Default shall be deemed to have
     existed as of the expiration of such period.

     (c) Certain Definitions. The following terms have the following meanings:


                                Page 130 of 200
<PAGE>

          (i)  "Disposition  Value"  means,  at any time,  with  respect  to any
     Transfer of Property,

               (A) in the case of  Property  that  does not  constitute  capital
          stock of a Restricted  Subsidiary,  the book value thereof,  valued at
          the amount taken into  account (or which would be taken into  account)
          in the  consolidated  balance sheet of the Borrower then most recently
          required to have been  delivered  to the  Lenders  pursuant to Section
          6.1, and

               (B) in the case of Property that  constitutes  capital stock of a
          Restricted Subsidiary,  an amount equal to that percentage of the book
          value of the assets of the  Restricted  Subsidiary  that  issued  such
          capital  stock as is equal to the  percentage  that the book  value of
          such  capital  stock  represents  of  the  book  value  of  all of the
          outstanding capital stock of such Restricted Subsidiary (assuming,  in
          making such  calculations,  that all Securities  convertible into such
          capital  stock  are  so  converted  and  giving  full  effect  to  all
          transactions  that would occur or be required in connection  with such
          conversion),  determined as of the date of the balance sheet  referred
          to in the foregoing clause (A).

          (ii) "Substantial Portion" means, at any time, any Property subject to
     a Transfer if

               (A) the  Disposition  Value of such  Property,  when added to the
          Disposition  Value  of all  other  Property  of the  Borrower  and the
          Restricted Subsidiaries that has been the subject of a Transfer (other
          than an  Excluded  Transfer  and  subject,  with  respect to both such
          Property and all such other  Property,  to the  provisions  of Section
          6.14(b)) during the then current fiscal year of the Borrower,  exceeds
          an amount equal to ten percent (10%) of  Consolidated  Total Assets as
          reflected (or as would be reflected) in the consolidated balance sheet
          of the Borrower then most recently  required to have been delivered to
          the Lenders pursuant to Section 6.1, or

               (B) the  Disposition  Value of such  Property,  when added to the
          Disposition  Value  of all  other  Property  of the  Borrower  and the
          Restricted Subsidiaries that has been the subject of a Transfer (other
          than an  Excluded  Transfer  and  subject,  with  respect to both such
          Property and all such other  Property,  to the  provisions  of Section
          6.14(b)) during the period beginning on the date of this Agreement and
          ending on and including the date of the consummation of such Transfer,
          exceeds an amount equal to twenty percent (20%) of Consolidated  Total
          Assets as reflected  (or as would be  reflected)  in the  consolidated
          balance sheet of the Borrower then most recently required to have been
          delivered to the Lenders pursuant to Section 6.1 hereof.


                                Page 131 of 200
<PAGE>

          (iii) "Transfer" means, with respect to any Person, any transaction in
     which such Person  sells,  conveys,  transfers or leases (as lessor) any of
     its Property,  including,  without  limitation,  capital stock of any other
     Person.

     6.15.  Liens.  The  Borrower  will  not,  and  will not  permit  any of the
Restricted  Subsidiaries  to, directly or indirectly  create,  incur,  assume or
permit to exist (upon the happening of a contingency  or otherwise)  any Lien on
or with respect to any Property (including,  without limitation, any document or
instrument  in respect of goods or accounts  receivable)  of the Borrower or any
Restricted  Subsidiary,  whether now owned or held or hereafter acquired, or any
income or profits therefrom  (whether or not provision is made for the equal and
ratable securing of the Loans hereunder in accordance with the last paragraph of
this Section 6.15), or assign or otherwise convey any right to receive income or
profits, except:

          (a) Liens for taxes,  assessments  or other  governmental  charges the
     payment of which is not at the time required by Section 6.7;

          (b) statutory Liens of landlords and Liens of carriers,  warehousemen,
     mechanics,  materialmen and other similar Liens, in each case,  incurred in
     the  ordinary  course of  business  for sums not yet due or the  payment of
     which is not at the time required by Section 6.7;

          (c) Liens (other than any Lien imposed by ERISA)  incurred or deposits
     made in the ordinary  course of business (i) in  connection  with  workers'
     compensation  unemployment  insurance and other types of social security or
     retirement benefits, or (ii) to secure (or to obtain letters of credit that
     secure) the performance of tenders,  statutory  obligations,  surety bonds,
     appeal  and  supersedeas  bonds  (not  in  excess  of Two  Million  Dollars
     ($2,000,000)), bids, leases (other than Capital Leases), performance bonds,
     purchase, construction or sales contracts and other similar obligations, in
     each case not incurred or made in  connection  with the borrowing of money,
     the obtaining of advances or credit or the payment of the deferred purchase
     price of Property;

          (d) leases or subleases granted to others,  easements,  rights-of-way,
     restrictions  and  other  similar  charges  or  encumbrances,  in each case
     incidental  to,  and not  interfering  with,  the  ordinary  conduct of the
     business of the Borrower or any of the  Restricted  Subsidiaries,  provided
     that such Liens do not, in the aggregate, materially detract from the value
     of such Property with respect to its then current use;

          (e)  Liens  on  Property  of the  Borrower  or  any of the  Restricted
     Subsidiaries  securing  Debt  owing to the  Borrower  or to a  Wholly-Owned
     Restricted Subsidiary;


                                Page 132 of 200
<PAGE>

          (f) Liens existing on the date of this Agreement and securing the Debt
     of the Borrower and the Restricted  Subsidiaries identified as secured Debt
     in Schedule 6, but not any refinancing of such Debt;

          (g) Liens on Property  acquired or  constructed by the Borrower or any
     Restricted  Subsidiary  after the date of this  Agreement to secure Debt of
     the Borrower or such Restricted  Subsidiary  incurred in connection with or
     related to such  acquisition  or  construction,  and Liens existing on such
     Property at the time of acquisition thereof, provided that

               (i) no such Lien shall extend to or cover any Property other than
          the Property being acquired or constructed  (including contractual and
          other rights related thereto and proceeds thereof),

               (ii) the amount of Debt secured by any such Lien shall not exceed
          an amount  equal to the lesser of the total  purchase or  construction
          price or Fair Market Value (as  determined  in good faith by the Board
          of Directors or the board of directors of such Restricted  Subsidiary)
          of the Property being acquired or constructed,  determined at the time
          of such  acquisition or at the time of substantial  completion of such
          construction,

               (iii)  such Lien  shall be  created  concurrently  with or within
          twelve months after such acquisition or substantial completion of such
          construction, and

               (iv) no Default or Unmatured  Default  shall exist at the time of
          creation, incurrence or assumption of such Lien;

          (h) Liens existing on Property of a corporation or other entity at the
     time it becomes a Restricted  Subsidiary or is merged or consolidated  with
     the Borrower or a Restricted Subsidiary, provided that

               (i) no such Lien shall extend to or cover any Property other than
          the Property subject to such Lien at the time of any such transaction,

               (ii) the amount of Debt secured by any such Lien shall not exceed
          the Fair  Market  Value (as  determined  in good faith by the Board of
          Directors or the board of directors of such Restricted  Subsidiary) of
          the  Property  subject  thereto,   determined  at  the  time  of  such
          transaction,

               (iii)  such Lien was not  created  in  contemplation  of any such
          transaction, and


                                Page 133 of 200
<PAGE>

               (iv) no Default or Unmatured  Default  shall exist at the time of
          any such transaction;

          (i) Liens  incidental  to the conduct of the  business  referred to in
     Section 6.4 (including, without limitation, licenses, participation rights,
     rebate or revenue sharing obligations,  or similar encumbrances),  provided
     that such Liens have not arisen in connection  with the incurrence of Debt;
     and

          (j) Liens,  not otherwise  permitted by the provisions of this Section
     6.15, on Property of the Borrower or any  Restricted  Subsidiary,  provided
     that on the date the Borrower or such Restricted  Subsidiary becomes liable
     with  respect to the Debt  secured by such  Liens,  and  immediately  after
     giving  effect  thereto  and the  concurrent  retirement  of any other Debt
     constituting Priority Debt,

               (i) no Default or Unmatured Default exists, and

               (ii) the  aggregate  amount of Priority  Debt does not exceed ten
          percent (10%) of Consolidated Tangible Assets.

     In case any  Property  shall be  subjected  to a Lien in  violation of this
     Section 6.15,  the Borrower will forthwith make or cause to be made, to the
     fullest  extent  permitted  by  applicable  law,   provision   whereby  the
     Obligations  will be secured  equally and ratably as to such  Property with
     all other  obligations  secured  thereby  pursuant to such  agreements  and
     instruments as shall be approved by the Required Lenders,  and the Borrower
     will  promptly  cause to be  delivered  to the Agent and to each  Lender an
     opinion,  reasonably satisfactory to the Required Lenders, of Gardere Wynne
     Sewell & Riggs,  L.L.P. or other  independent  counsel  satisfactory to the
     Required  Lenders to the effect that such  agreements and  instruments  are
     enforceable  in  accordance  with their  terms,  and in any event the Loans
     hereunder  shall have the benefit,  to the full extent that,  and with such
     priority  as, the  Lenders  may be  entitled  under  applicable  law, of an
     equitable  Lien on such  Property (and any proceeds  thereof)  securing the
     Loans  hereunder.  Such  violation of this Section 6.15 will  constitute an
     Unmatured Default  hereunder,  whether or not any such provision is made or
     any equitable Lien is created pursuant to this Section 6.15.

     6.16.  Limitations on Certain Restricted  Subsidiary Actions.  The Borrower
will not, and will not permit any of the Restricted  Subsidiaries to, enter into
any agreement which would restrict any Restricted  Subsidiary's legal ability or
right to: (a) pay dividends or make any other distributions on its common stock;
(b) pay any Debt owing to the Borrower or another  Restricted  Subsidiary (other
than waivers of subrogation); (c) make any Investment in the Borrower or another
Restricted  Subsidiary;  (d)  transfer  its  Property to the Borrower or another
Restricted  Subsidiary  (except  that any such  agreement  may (i)  prohibit the


                                Page 134 of 200
<PAGE>

assignment of contractual  rights,  (ii) include grants of contractual rights of
first refusal, and (iii) include similar contractual  obligations not unusual in
the  course of such  Restricted  Subsidiary's  business);  or (e)  Guaranty  the
Obligations or any renewals or refinancings thereof; provided, however, that

          (i) the restrictions of this Section 6.16 shall not apply to

               (A) any such agreement in existence on the date of this Agreement
          and set forth in Schedule 2,

               (B) this Agreement, or

               (C) other  agreements  relating  to the  creation  of Senior Debt
          incurred in accordance with the terms of this Agreement, and

          (ii) the  restrictions  of clause (d) of this  Section  6.16 shall not
     apply to any agreement relating to the creation of Priority Debt or Debt of
     Restricted  Subsidiaries  secured by Liens  permitted by Section 6.15(a) to
     Section 6.15(i),  inclusive, to the extent that such restrictions limit the
     ability of any Restricted  Subsidiary to transfer the Property that secures
     such Priority Debt or such other Debt;

provided  further that, in the case of the foregoing  clauses (i) and (ii), such
agreement does not impose any limitations on any Restricted Subsidiary's ability
to perform its obligations under the Subsidiary Guaranty.

     6.17. Affiliate Transactions.Affiliate Transactions. The Borrower will not,
and will not  permit  any of the  Restricted  Subsidiaries  to,  enter  into any
transaction  (other than  transactions  among the Borrower and its  wholly-owned
Unrestricted  Subsidiaries  that  are  not,  individually  or in the  aggregate,
Material),  including,  without  limitation,  the purchase,  sale or exchange of
Property or the  rendering of any  service,  with any  Affiliate,  except in the
ordinary  course of business of the Borrower or such  Restricted  Subsidiary and
upon  fair  and  reasonable  terms no less  favorable  to the  Borrower  or such
Restricted  Subsidiary  than  it  would  obtain  in a  comparable  arm's  length
transaction with a Person not an Affiliate.

     6.18.  Net Worth.  The Borrower  will not, at any time,  permit
Consolidated  Net Worth to be less than the sum of (a)  Ninety  Million  Dollars
($90,000,000),  plus (b) an  aggregate  amount equal to fifty  percent  (50%) of
Consolidated  Net Income (but, in each case, only if a positive number) for each
completed  fiscal  year of the  Borrower  beginning  with the fiscal year ending
December 31, 1995.

     6.19. Interest Coverage.  The Borrower will not, at any
time,  permit (a) EBITDA for the period of four  consecutive  fiscal quarters of
the Borrower then most recently  ended to be less than (b) five hundred  percent
(500%) of Consolidated Interest Expense for such period.


                                Page 135 of 200
<PAGE>

     6.20. Debt Incurrence.  (a) Borrower Debt. The Borrower will not,  directly
or indirectly, create, incur, assume, guarantee, or otherwise become directly or
indirectly liable with respect to, any Debt (including,  without limitation, any
extension,  renewal  or  refunding  of Debt),  unless  on the date the  Borrower
becomes liable with respect to any such Debt and immediately after giving effect
thereto and the concurrent retirement of any other Debt,

               (i) no Default or Unmatured Default exists, and

               (ii)  Consolidated  Debt does not exceed fifty  percent  (50%) of
          Total Capitalization.

          (b)  Restricted  Subsidiary  Debt. The Borrower will not permit any of
     the Restricted  Subsidiaries  to,  directly or indirectly,  create,  incur,
     assume,  guarantee,  or otherwise become directly or indirectly liable with
     respect to, any Debt (including, without limitation, any extension, renewal
     or  refunding  of  Debt),  unless on the date  such  Restricted  Subsidiary
     becomes liable with respect to any such Debt and  immediately  after giving
     effect thereto and the concurrent retirement of any Debt,

               (i) no Default or Unmatured Default exists,

               (ii) the  aggregate  amount of Priority  Debt does not exceed ten
          percent (10%) of Consolidated Tangible Assets, and

               (iii)  Consolidated  Debt does not exceed fifty  percent (50%) of
          Total Capitalization.

          (c) Time of Incurrence of Debt. For the purposes of this Section 6.20,
     any Person becoming a Restricted  Subsidiary after the date hereof shall be
     deemed,  at the time it becomes a Restricted  Subsidiary,  to have incurred
     all of its then  outstanding  Debt, and any Person  extending,  renewing or
     refunding  any Debt shall be deemed to have  incurred such Debt at the time
     of such extension, renewal or refunding.



                                   ARTICLE VII

                                    DEFAULTS
                                    --------


     The occurrence of any one or more of the following  events shall constitute
a Default:

     7.1. Any  representation or warranty made or deemed made by or on behalf of
the Borrower or any of its  Subsidiaries to the Lenders or the Agent under or in


                                Page 136 of 200
<PAGE>

connection  with this  Agreement,  the  Subsidiary  Guaranty,  any Loan,  or any
certificate  or information  delivered in connection  with this Agreement or any
other Loan Document shall be materially false on the date as of which made.

     7.2.  Nonpayment  of  principal  of any Note when  due,  or  nonpayment  of
interest upon any Note or of any commitment fee or other  obligations  under any
of the Loan Documents within five days after the same becomes due.

     7.3.  The  breach of any of the terms or  provisions  of  Sections  6.1(f),
6.1(i),  or 6.12 through  6.20,  inclusive,  except for breaches of the terms of
Section 6.15 with  respect to Liens which secure Debt in an aggregate  principal
amount of less than $2,500,000.

     7.4. The breach by the Borrower  (other than a breach which  constitutes  a
Default under Section 7.1, 7.2 or 7.3) of any of the terms or provisions of this
Agreement  which is not remedied  within  thirty days after the earlier of (i) a
Responsible  Officer  obtaining  actual  knowledge  of such default and (ii) the
Borrower  receiving  written notice of such default from the Agent or any Lender
(any such written notice to be identified as a "notice of default").

     7.5.  Failure of the Borrower or any of its Restricted  Subsidiaries to pay
when due any  Indebtedness  aggregating  in  excess  of  $10,000,000  ("Material
Indebtedness");  or the  default  by  the  Borrower  or  any  of its  Restricted
Subsidiaries in the performance of any term, provision or condition contained in
any  agreement  under  which any such  Material  Indebtedness  was created or is
governed, or any other event shall occur or condition exist, the effect of which
is to cause, or to permit the holder or holders of such Material Indebtedness to
cause, such Material Indebtedness to become due prior to its stated maturity; or
any Material Indebtedness of the Borrower or any of its Restricted  Subsidiaries
shall be declared to be due and payable or required to be prepaid or repurchased
(other  than by a  regularly  scheduled  payment)  prior to the stated  maturity
thereof; or the Borrower or any of its Restricted Subsidiaries shall not pay, or
admit in writing its inability to pay, its debts generally as they become due.

     7.6.  The Borrower or any of its  Subsidiaries  shall (i) have an order for
relief  entered with respect to it under the Federal  bankruptcy  laws as now or
hereafter in effect, (ii) make an assignment for the benefit of creditors, (iii)
apply for,  seek,  consent to, or acquiesce in, the  appointment  of a receiver,
custodian,  trustee,  examiner,  liquidator  or similar  official  for it or any
Substantial  Portion of its Property,  (iv) institute any proceeding  seeking an
order for relief under the Federal bankruptcy laws as now or hereafter in effect
or seeking to  adjudicate it a bankrupt or  insolvent,  or seeking  dissolution,
winding up, liquidation, reorganization,  arrangement, adjustment or composition
of it or  its  debts  under  any  law  relating  to  bankruptcy,  insolvency  or
reorganization  or relief of debtors or fail to file an answer or other pleading
denying the material  allegations of any such  proceeding  filed against it, (v)
take any  corporate  or  partnership  action to  authorize  or effect any of the
foregoing  actions set forth in this Section 7.6 or (vi) fail to contest in good
faith any appointment or proceeding described in Section 7.7.


                                Page 137 of 200
<PAGE>

     7.7. Without the application, approval or consent of the Borrower or any of
its Subsidiaries, a receiver, trustee, examiner,  liquidator or similar official
shall  be  appointed  for  the  Borrower  or  any  of  its  Subsidiaries  or any
Substantial  Portion  of its  Property,  or a  proceeding  described  in Section
7.6(iv) shall be instituted  against the Borrower or any of its Subsidiaries and
such appointment continues undischarged or such proceeding continues undismissed
or unstayed for a period of sixty (60) days.

     7.8. The Borrower or any of its Subsidiaries  shall fail within  forty-five
(45) days to pay,  bond or  otherwise  discharge  any  judgment or order for the
payment  of money in  excess  of  $1,000,000,  which is not  stayed on appeal or
otherwise being appropriately contested in good faith.

     7.9. The Unfunded  Liabilities of all Single Employer Plans shall exceed in
the aggregate  $5,000,000 or any Reportable Event shall occur in connection with
any Plan.

     7.10. The Borrower or any other member of the  Controlled  Group shall have
been  notified  by the  sponsor  of a  Multiemployer  Plan that it has  incurred
withdrawal  liability  to such  Multiemployer  Plan  in an  amount  which,  when
aggregated with all other amounts required to be paid to Multiemployer  Plans by
the Borrower or any other member of the Controlled Group as withdrawal liability
(determined as of the date of such notification), exceeds $5,000,000 or requires
payments exceeding $2,000,000 per annum.

     7.11. The Borrower or any other member of the  Controlled  Group shall have
been  notified by the sponsor of a  Multiemployer  Plan that such  Multiemployer
Plan is in reorganization or is being terminated, within the meaning of Title IV
of ERISA,  if as a result of such  reorganization  or termination  the aggregate
annual  contributions  of the Borrower and the other  members of the  Controlled
Group  (taken  as a  whole)  to  all  Multiemployer  Plans  which  are  then  in
reorganization  or being  terminated  have  been or will be  increased  over the
amounts contributed to such Multiemployer Plans for the respective plan years of
each such  Multiemployer  Plan immediately  preceding the plan year in which the
reorganization or termination occurs by an amount exceeding $2,000,000.

     7.12. Any Change in Control shall occur.

     7.13. The Subsidiary  Guaranty shall fail to remain in full force or effect
or any  action  shall be taken to  discontinue  or to assert the  invalidity  or
unenforceability of the Subsidiary Guaranty,  or any Restricted Subsidiary shall
fail to comply with any of the terms or provisions of the  Subsidiary  Guaranty,
or any Restricted  Subsidiary denies that it has any further liability under the
Subsidiary Guaranty, or gives notice to such effect.

     7.14. The representations and warranties set forth in Section 5.13(a) shall
at any time not be true and correct.


                                Page 138 of 200
<PAGE>

                                  ARTICLE VIII

                 ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES
                 ----------------------------------------------


     8.1.  Acceleration.  If any Default described in Section 7.6 or 7.7 occurs
with  respect to the  Borrower,  the  obligations  of the  Lenders to make Loans
hereunder shall  automatically  terminate and the Obligations  shall immediately
become due and payable  without any  election or action on the part of the Agent
or any Lender.  If any other Default occurs,  the Required Lenders (or the Agent
with  the  consent  of the  Required  Lenders)  may  terminate  or  suspend  the
obligations of the Lenders to make Loans  hereunder,  or declare the Obligations
to be  due  and  payable,  or  both,  whereupon  the  Obligations  shall  become
immediately due and payable,  without presentment,  demand, protest or notice of
any kind, all of which the Borrower hereby expressly waives.

     If, within 60 days after acceleration of the maturity of the Obligations or
termination  of the  obligations  of the  Lenders to make Loans  hereunder  as a
result of any Default (other than any Default as described in Section 7.6 or 7.7
with respect to the  Borrower) and before any judgment or decree for the payment
of the Obligations due shall have been obtained or entered, the Required Lenders
(in their sole  discretion)  shall so direct,  the Agent shall, by notice to the
Borrower, rescind and annul such acceleration and/or termination.

     8.2.  Amendments.  Subject to the  provisions  of this  Article  VIII,  the
Required  Lenders  (or the Agent with the  consent  in  writing of the  Required
Lenders) and the Borrower may enter into agreements  supplemental hereto for the
purpose of adding or modifying any  provisions to the Loan Documents or changing
in any manner the rights of the Lenders or the Borrower hereunder or waiving any
Default hereunder; provided, however, that no such supplemental agreement shall,
without the consent of each Lender affected thereby:

          (i) Extend the final  maturity  of any Loan or Note or forgive  all or
     any portion of the principal  amount thereof,  or reduce the rate or extend
     the time of payment of interest or fees thereon.

          (ii) Reduce the  percentage  specified in the  definition  of Required
     Lenders.

          (iii) Extend the Facility  Termination Date, or increase the amount of
     the  Commitment of any Lender  hereunder,  or permit the Borrower to assign
     its rights under this Agreement.

          (iv) Amend this Section 8.2.

          (v) Release any Restricted  Subsidiary from its obligations  under the
     Subsidiary Guaranty.


                                Page 139 of 200
<PAGE>

No amendment of any provision of this  Agreement  relating to the Agent shall be
effective  without the written consent of the Agent. The Agent may waive payment
of the fee required under Section  12.3.2  without  obtaining the consent of any
other party to this Agreement.

     8.3.  Preservation  of Rights.  No delay or  omission of the Lenders or the
Agent to exercise any right under the Loan Documents  shall impair such right or
be construed to be a waiver of any Default or an acquiescence  therein,  and the
making of a Loan  notwithstanding the existence of a Default or the inability of
the  Borrower  to  satisfy  the  conditions  precedent  to such  Loan  shall not
constitute  any waiver or  acquiescence.  Any single or partial  exercise of any
such right shall not preclude other or further  exercise thereof or the exercise
of any other right,  and no waiver,  amendment or other  variation of the terms,
conditions or provisions of the Loan Documents  whatsoever shall be valid unless
in writing signed by the Lenders required pursuant to Section 8.2, and then only
to the extent in such writing  specifically set forth. All remedies contained in
the Loan  Documents  or by law  afforded  shall be  cumulative  and all shall be
available to the Agent and the Lenders until the  Obligations  have been paid in
full.

                                   ARTICLE IX

                               GENERAL PROVISIONS
                               ------------------

     9.1. Survival of Representations. All representations and warranties of the
Borrower contained in this Agreement shall survive delivery of the Notes and the
making of the Loans herein contemplated.

     9.2. Governmental  Regulation.  Anything contained in this Agreement to the
contrary  notwithstanding,  no Lender shall be obligated to extend credit to the
Borrower  in  violation  of  any  limitation  or  prohibition  provided  by  any
applicable statute or regulation.

     9.3. Taxes.  Any stamp,  documentary or recording taxes or charges or other
similar  assessments or charges made by any governmental or revenue authority in
respect of the Loan Documents shall be paid by the Borrower.

     9.4.  Headings.  Section headings in the Loan Documents are for convenience
of  reference  only,  and  shall not  govern  the  interpretation  of any of the
provisions of the Loan Documents.

     9.5. Entire  Agreement.  The Loan Documents embody the entire agreement and
understanding  among the  Borrower,  the Agent and the Lenders and supersede all
prior  agreements  and  understandings  among  the  Borrower,  the Agent and the
Lenders  relating  to the  subject  matter  thereof  (other  than the fee letter
described in Section 10.13).


                                Page 140 of 200
<PAGE>

     9.6.  Several  Obligations;  Benefits  of this  Agreement.  The  respective
obligations  of the  Lenders  hereunder  are several and not joint and no Lender
shall be the  partner  or agent of any other  (except to the extent to which the
Agent is authorized to act as such). The failure of any Lender to perform any of
its  obligations  hereunder  shall not relieve any other  Lender from any of its
obligations hereunder. This Agreement shall not be construed so as to confer any
right or benefit  upon any Person other than the parties to this  Agreement  and
their respective successors and assigns.

     9.7. Expenses; Indemnification.  The Borrower shall reimburse the Agent for
any costs,  charges and  out-of-pocket  expenses  (including  attorneys' fees of
attorneys for the Agent,  which attorneys may be employees of the Agent) paid or
incurred  by  the  Agent  in  connection  with  the  preparation,   negotiation,
execution, delivery, review, amendment,  modification, and administration of the
Loan Documents.  The Borrower also agrees to reimburse the Agent and the Lenders
for any costs, charges and out-of-pocket  expenses (including attorneys' fees of
attorneys for the Agent and the Lenders, which attorneys may be employees of the
Agent or the Lenders)  paid or incurred by the Agent or any Lender in connection
with the collection and enforcement of the Loan Documents.  The Borrower further
agrees to  indemnify  the Agent and each  Lender,  its  directors,  officers and
employees against all losses, claims, damages, penalties, judgments, liabilities
and expenses  (including,  without  limitation,  all expenses of  litigation  or
preparation  therefor whether or not the Agent or any Lender is a party thereto)
which any of them may pay or incur arising out of or relating to this Agreement,
the other Loan Documents, the transactions  contemplated hereby or the direct or
indirect  application  or  proposed  application  of the  proceeds  of any  Loan
hereunder  except to the extent that they are determined by a court of competent
jurisdiction in a final and non-appealable order to have resulted from the gross
negligence  or willful  misconduct  of the party  seeking  indemnification.  The
obligations of the Borrower under this Section shall survive the  termination of
this Agreement.

     9.8. Numbers of Documents. All statements,  notices, closing documents, and
requests hereunder shall be furnished to the Agent with sufficient  counterparts
so that the Agent may furnish one to each of the Lenders.

     9.9. Accounting.  Except as provided to the contrary herein, all accounting
terms  used  herein  shall  be  interpreted  and all  accounting  determinations
hereunder shall be made in accordance with Agreement Accounting Principles.

     9.10.  Severability of Provisions.  Any provision in any Loan Document that
is held to be inoperative,  unenforceable, or invalid in any jurisdiction shall,
as to that  jurisdiction,  be  inoperative,  unenforceable,  or invalid  without
affecting  the  remaining  provisions  in that  jurisdiction  or the  operation,
enforceability,  or validity of that provision in any other jurisdiction, and to
this end the provisions of all Loan Documents are declared to be severable.


                                Page 141 of 200
<PAGE>

     9.11.  Nonliability of Lenders.  The relationship  between the Borrower and
the Lenders and the Agent shall be solely that of borrower  and lender.  Neither
the  Agent nor any  Lender  shall  have any  fiduciary  responsibilities  to the
Borrower.  Neither the Agent nor any Lender undertakes any responsibility to the
Borrower to review or inform the Borrower of any matter in  connection  with any
phase of the Borrower's business or operations. The Borrower agrees that neither
the Agent nor any Lender shall have liability to the Borrower  (whether sounding
in  tort,  contract  or  otherwise)  for  losses  suffered  by the  Borrower  in
connection  with,  arising out of, or in any way  related  to, the  transactions
contemplated and the relationship established by the Loan Documents, or any act,
omission or event occurring in connection therewith,  unless it is determined by
a court of competent  jurisdiction in a final and non-appealable order that such
losses  resulted from the gross  negligence  or willful  misconduct of the party
from which  recovery is sought.  Neither the Agent nor any Lender shall have any
liability with respect to, and the Borrower  hereby waives,  releases and agrees
not to sue for, any special,  indirect or consequential  damages suffered by the
Borrower in connection  with,  arising out of, or in any way related to the Loan
Documents or the transactions contemplated thereby.

     9.12.  Confidentiality.   Each  Lender  agrees  to  hold  any  confidential
information which it may receive from the Borrower pursuant to this Agreement in
confidence, except for disclosure (i) to its Affiliates and to other Lenders and
their  respective  Affiliates,  (ii) to legal  counsel,  accountants,  and other
professional  advisors to that Lender or to a  Transferee,  (iii) to  regulatory
officials,  (iv) to any Person as required by law, regulation,  or legal process
and (v) permitted by Section 12.4.

     9.13. Nonreliance.  Each Lender hereby represents that it is not relying on
or looking  to any margin  stock (as  defined  in  Regulation  U of the Board of
Governors of the Federal Reserve System) for the repayment of the Loans provided
for herein.

     9.14.  Maximum Rate.  It is the  intention of the parties  hereto to comply
with all applicable usury laws;  accordingly,  it is agreed that notwithstanding
any provision to the contrary herein or in the Notes, or in any of the documents
securing payment thereof or otherwise  relating hereto,  no such provision shall
require  the  payment  or permit the  collection  of  interest  in excess of the
highest rate allowed by applicable  law (the "Maximum  Rate").  If any excess of
interest in such  respect is  provided  for,  or shall be  adjudicated  to be so
provided for, herein or in the Notes or in any of the documents securing payment
thereof or otherwise relating hereto, then in such event:

          (a) the provisions of this Section 9.14 shall govern and control,

          (b) neither  the  Borrower,  the  Restricted  Subsidiaries,  nor their
     heirs,  legal  representatives,  successors  or assigns nor any other party
     liable for the payment on the Loans,  shall be  obligated to pay the amount
     of such interest to the extent that it is in excess of the Maximum Rate,


                                Page 142 of 200
<PAGE>

          (c) any such excess with  respect to any such Loan which may have been
     collected  shall,  at the election of each Lender,  be either  applied as a
     credit against the then unpaid  principal  amount on such Lender's Loans or
     refunded to the Borrower, and

          (d) the provisions hereof and of the Notes and any documents  securing
     payment thereof shall be automatically  reformed so that the effective rate
     of  interest  shall be  reduced to the  Maximum  Rate.  For the  purpose of
     determining  the Maximum Rate,  all interest  payments with respect  hereto
     shall be amortized,  prorated and spread  throughout  the full term of this
     Agreement  so that the  effective  rate of interest  charged  hereunder  is
     uniform throughout the term hereof.

     9.15.  ERISA  Representation  by Lenders.  Each Lender  hereby  represents,
warrants and confirms to the Agent, each other Lender and the Borrower that none
of the funds, monies,  assets or other consideration being used to fund Advances
hereunder  are or will be "plan  assets"  as  defined  under  ERISA and that its
rights, benefits and interests in and under the Loan Documents will not be "plan
assets" under ERISA.

                                   ARTICLE X

                                   THE AGENT
                                   ---------

     10.1.  Appointment;  Nature of  Relationship.  The First  National  Bank of
Chicago is hereby appointed by the Lenders as the Agent hereunder and under each
other Loan Document, and each of the Lenders irrevocably authorizes the Agent to
act as the contractual  representative of such Lender with the rights and duties
expressly set forth herein and in the other Loan Documents.  The Agent agrees to
act as such contractual  representative upon the express conditions contained in
this  Article X.  Notwithstanding  the use of the  defined  term  "Agent," it is
expressly  understood  and agreed  that the Agent  shall not have any  fiduciary
responsibilities  to any  Lender by reason of this  Agreement  or any other Loan
Document  and that the  Agent is  merely  acting  as the  representative  of the
Lenders with only those duties as are expressly set forth in this  Agreement and
the  other  Loan  Documents.   In  its  capacity  as  the  Lenders'  contractual
representative, the Agent (i) does not hereby assume any fiduciary duties to any
of the Lenders,  (ii) is a "representative" of the Lenders within the meaning of
Section  9-105  of the  Uniform  Commercial  Code  and  (iii)  is  acting  as an
independent  contractor,  the rights  and  duties of which are  limited to those
expressly set forth in this Agreement and the other Loan Documents.  Each of the
Lenders  hereby agrees to assert no claim against the Agent on any agency theory
or any other theory of  liability  for breach of  fiduciary  duty,  all of which
claims each Lender hereby waives.


                                Page 143 of 200
<PAGE>

     10.2.  Powers.  The Agent shall have and may exercise such powers under the
Loan Documents as are  specifically  delegated to the Agent by the terms of each
thereof,  together with such powers as are reasonably  incidental  thereto.  The
Agent shall have no implied  duties to the  Lenders,  or any  obligation  to the
Lenders to take any action thereunder except any action specifically provided by
the Loan Documents to be taken by the Agent.

     10.3.  General  Immunity.  Neither  the  Agent  nor  any of its  directors,
officers,  agents or employees  shall be liable to the Borrower,  the Lenders or
any Lender for any action  taken or omitted to be taken by it or them  hereunder
or under any other Loan Document or in connection  herewith or therewith  except
for its or their own gross negligence or willful misconduct.

     10.4. No Responsibility for Loans, Recitals, etc. Neither the Agent nor any
of its directors, officers, agents or employees shall be responsible for or have
any duty to ascertain,  inquire into, or verify (i) any  statement,  warranty or
representation  made in  connection  with any  Loan  Document  or any  borrowing
hereunder;  (ii)  the  performance  or  observance  of any of the  covenants  or
agreements  of  any  obligor  under  any  Loan  Document,   including,   without
limitation,  any agreement by an obligor to furnish information directly to each
Lender;  (iii) the satisfaction of any condition specified in Article IV, except
receipt of items  required  to be  delivered  to the Agent;  (iv) the  validity,
enforceability,  effectiveness,  sufficiency or genuineness of any Loan Document
or any other instrument or writing furnished in connection therewith; or (v) the
value,  sufficiency,  creation,  perfection  or priority of any  interest in any
collateral  security.  The Agent  shall have no duty to  disclose to the Lenders
information that is not required to be furnished by the Borrower to the Agent at
such time, but is voluntarily  furnished by the Borrower to the Agent (either in
its capacity as Agent or in its individual capacity).

     10.5.  Action on Instructions  of Lenders.  The Agent shall in all cases be
fully protected in acting, or in refraining from acting, hereunder and under any
other Loan  Document  in  accordance  with  written  instructions  signed by the
Required  Lenders,  and such instructions and any action taken or failure to act
pursuant  thereto  shall be binding on all of the  Lenders and on all holders of
Notes.  The Lenders hereby  acknowledge that the Agent shall be under no duty to
take any  discretionary  action  permitted  to be taken  by it  pursuant  to the
provisions  of this  Agreement  or any other  Loan  Document  unless it shall be
requested in writing to do so by the Required Lenders.  The Agent shall be fully
justified  in failing or  refusing  to take any action  hereunder  and under any
other Loan Document unless it shall first be indemnified to its  satisfaction by
the Lenders pro rata against any and all liability, cost and expense that it may
incur by reason of taking or continuing to take any such action.

     10.6.  Employment  of Agents and Counsel.  The Agent may execute any of its
duties  as Agent  hereunder  and under any other  Loan  Document  by or  through
employees,  agents,  and  attorneys-in-fact  and shall not be  answerable to the
Lenders, except as to money or securities received by it or


                                Page 144 of 200
<PAGE>

its  authorized  agents,  for the  default or  misconduct  of any such agents or
attorneys-in-fact  selected  by it with  reasonable  care.  The  Agent  shall be
entitled to advice of counsel  concerning  all matters  pertaining to the agency
hereby created and its duties hereunder and under any other Loan Document.

     10.7. Reliance on Documents;  Counsel.  The Agent shall be entitled to rely
upon any  Note,  notice,  consent,  certificate,  affidavit,  letter,  telegram,
statement,  paper or  document  believed  by it to be genuine and correct and to
have been  signed or sent by the proper  person or  persons,  and, in respect to
legal matters,  upon the opinion of counsel selected by the Agent, which counsel
may be employees of the Agent.

     10.8.  Agent's  Reimbursement  and  Indemnification.  The Lenders  agree to
reimburse and  indemnify  the Agent  ratably in  proportion to their  respective
Commitments (or, if the Commitments have been terminated, in proportion to their
Commitments  immediately  prior to such  termination)  (i) for any  amounts  not
reimbursed by the Borrower for which the Agent is entitled to  reimbursement  by
the Borrower under the Loan Documents,  (ii) for any other expenses  incurred by
the  Agent on  behalf  of the  Lenders,  in  connection  with  the  preparation,
execution,  delivery,  administration  and enforcement of the Loan Documents and
(iii) for any liabilities,  obligations,  losses, damages,  penalties,  actions,
judgments,  suits,  costs,  expenses  or  disbursements  of any kind and  nature
whatsoever which may be imposed on, incurred by or asserted against the Agent in
any way relating to or arising out of the Loan  Documents or any other  document
delivered in connection therewith or the transactions  contemplated  thereby, or
the  enforcement  of any of the terms  thereof or of any such  other  documents,
provided  that no Lender shall be liable for any of the  foregoing to the extent
they arise from the gross  negligence or willful  misconduct  of the Agent.  The
obligations of the Lenders under this Section 10.8 shall survive  payment of the
Obligations and termination of this Agreement.

     10.9. Notice of Default. The Agent shall not be deemed to have knowledge or
notice of the occurrence of any Default or Unmatured  Default  hereunder  unless
the Agent has received written notice from a Lender or the Borrower referring to
this  Agreement  describing  such Default or Unmatured  Default and stating that
such notice is a "notice of default".  In the event that the Agent receives such
a notice, the Agent shall give prompt notice thereof to the Lenders.

     10.10.  Rights as a Lender.  In the event the Agent is a Lender,  the Agent
shall  have the same  rights  and  powers  hereunder  and under  any other  Loan
Document  as any  Lender  and may  exercise  the same as  though it were not the
Agent, and the term "Lender" or "Lenders" shall, at any time when the Agent is a
Lender,  unless  the  context  otherwise  indicates,  include  the  Agent in its
individual  capacity.  The Agent may accept  deposits  from,  lend money to, and
generally engage in any kind of trust,  debt,  equity or other  transaction,  in
addition to those  contemplated  by this  Agreement or any other Loan  Document,
with the  Borrower  or any of its  Subsidiaries  in which the  Borrower  or such
Subsidiary is not  restricted  hereby from  engaging with any other Person.  The
Agent, in its individual capacity, is not obligated to remain a Lender.


                                Page 145 of 200
<PAGE>

     10.11.  Lender  Credit  Decision.  Each  Lender  acknowledges  that it has,
independently  and without reliance upon the Agent or any other Lender and based
on the financial  statements  prepared by the Borrower and such other  documents
and information as it has deemed  appropriate,  made its own credit analysis and
decision to enter into this Agreement and the other Loan Documents.  Each Lender
also  acknowledges  that it will,  independently  and without  reliance upon the
Agent or any other  Lender and based on such  documents  and  information  as it
shall deem appropriate at the time, continue to make its own credit decisions in
taking or not taking action under this Agreement and the other Loan Documents.

     10.12.  Successor Agent. The Agent may resign at any time by giving written
notice thereof to the Lenders and the Borrower, such resignation to be effective
upon the  appointment  of a successor  Agent or, if no successor  Agent has been
appointed,  forty-five  days  after  the  retiring  Agent  gives  notice  of its
intention to resign.  The Agent may be removed at any time with or without cause
by written notice received by the Agent from the Required Lenders,  such removal
to be effective on the date  specified  by the Required  Lenders.  Upon any such
resignation or removal, the Required Lenders shall have the right to appoint, on
behalf of the Borrower and the Lenders, a successor Agent. If no successor Agent
shall have been so appointed by the Required  Lenders  within  thirty days after
the  resigning  Agent's  giving  notice of its  intention  to  resign,  then the
resigning  Agent may  appoint,  on behalf of the  Borrower  and the  Lenders,  a
successor  Agent.  If the Agent has  resigned or been  removed and no  successor
Agent has been  appointed,  the  Lenders may perform all the duties of the Agent
hereunder and the Borrower shall make all payments in respect of the Obligations
to the applicable Lender and for all other purposes shall deal directly with the
Lenders. No successor Agent shall be deemed to be appointed hereunder until such
successor Agent has accepted the appointment.  Any such successor Agent shall be
a commercial bank having capital and retained earnings of at least $500,000,000.
Upon the acceptance of any appointment as Agent hereunder by a successor  Agent,
such successor Agent shall  thereupon  succeed to and become vested with all the
rights,  powers,  privileges and duties of the resigning or removed Agent.  Upon
the  effectiveness  of the resignation or removal of the Agent, the resigning or
removed Agent shall be discharged from its duties and obligations  hereunder and
under the Loan Documents.  After the effectiveness of the resignation or removal
of an Agent,  the  provisions of this Article X shall continue in effect for the
benefit of such Agent in respect of any actions  taken or omitted to be taken by
it while  it was  acting  as the  Agent  hereunder  and  under  the  other  Loan
Documents.

     10.13.  Agent's Fee. The Borrower  agrees to pay to the Agent,  for its own
account,  the fees  agreed to by the  Borrower  and the Agent  pursuant  to that
certain letter agreement dated May 17, 1996, or as otherwise agreed from time to
time.

                                Page 146 of 200
<PAGE>

                                   ARTICLE XI

                            SETOFF; RATABLE PAYMENTS
                            ------------------------

     11.1.  Setoff. In addition to, and without limitation of, any rights of the
Lenders  under  applicable  law,  if the  Borrower  becomes  insolvent,  however
evidenced,  or any Default occurs,  any and all deposits  (including all account
balances,  whether  provisional  or  final  and  whether  or  not  collected  or
available) and any other Indebtedness at any time held or owing by any Lender to
or for the credit or account of the  Borrower  may be offset and applied  toward
the  payment  of the  Obligations  owing  to  such  Lender,  whether  or not the
Obligations, or any part hereof, shall then be due.

     11.2. Ratable Payments. If any Lender, whether by setoff or otherwise,  has
payment made to it upon its Ratable Loans (other than payments received pursuant
to Section 3.1, 3.2 or 3.4) in a greater  proportion  than that  received by any
other Lender, such Lender agrees, promptly upon demand, to purchase a portion of
the Ratable  Loans held by the other  Lenders so that after such  purchase  each
Lender will hold its ratable proportion of Ratable Loans. If any Lender, whether
in  connection  with  setoff or  amounts  which  might be  subject  to setoff or
otherwise,  receives  collateral or other protection for its Obligations or such
amounts  which may be subject to  setoff,  such  Lender  agrees,  promptly  upon
demand,  to take  such  action  necessary  such  that all  Lenders  share in the
benefits of such  collateral  ratably in proportion to their Ratable  Loans.  In
case any such payment is disturbed by legal process,  or otherwise,  appropriate
further adjustments shall be made.

                                  ARTICLE XII

               BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS
               -------------------------------------------------

     12.1.  Successors  and  Assigns.  The  terms  and  provisions  of the  Loan
Documents shall be binding upon and inure to the benefit of the Borrower and the
Lenders  and  their  respective  successors  and  assigns,  except  that (i) the
Borrower shall not have the right to assign its rights or obligations  under the
Loan  Documents and (ii) any assignment by any Lender must be made in compliance
with Section 12.3.  Notwithstanding  clause (ii) of this Section, any Lender may
at any time, without the consent of the Borrower or the Agent, assign all or any
portion of its rights under this  Agreement  and its Notes to a Federal  Reserve
Bank; provided, however, that no such assignment to a Federal Reserve Bank shall
release the  transfer or  Lender from its  obligations  hereunder. The Agent may
treat the payee of any Note as the owner thereof for all purposes  hereof unless
and until such payee  complies  with Section  12.3 in the case of an  assignment
thereof or, in the case of any other transfer,  a written notice of the transfer


                                Page 147 of 200
<PAGE>

is filed  with the  Agent.  Any  assignee  or  transferee  of a Note  agrees  by
acceptance  thereof  to be bound by all the  terms  and  provisions  of the Loan
Documents.  Any request,  authority or consent of any Person, who at the time of
making  such  request or giving such  authority  or consent is the holder of any
Note,  shall be conclusive and binding on any subsequent  holder,  transferee or
assignee of such Note or of any Note or Notes issued in exchange therefor.

     12.2. Participations.

          12.2.1.  Permitted  Participants;  Effect.  Any  Lender  may,  in  the
     ordinary  course of its business and in accordance  with applicable law, at
     any  time  sell to one or more  banks or  other  entities  ("Participants")
     participating  interests in any Loan owing to such Lender, any Note held by
     such Lender,  any  Commitment of such Lender or any other  interest of such
     Lender under the Loan Documents.  In the event of any such sale by a Lender
     of  participating  interests to a  Participant,  such Lender's  obligations
     under the Loan Documents shall remain  unchanged,  such Lender shall remain
     solely  responsible to the other parties hereto for the performance of such
     obligations,  such Lender  shall remain the holder of any such Note for all
     purposes  under the Loan  Documents,  all amounts  payable by the  Borrower
     under this  Agreement  shall be  determined  as if such Lender had not sold
     such participating interests, and the Borrower and the Agent shall continue
     to deal  solely  and  directly  with such  Lender in  connection  with such
     Lender's rights and obligations under the Loan Documents.

          12.2.2.  Voting  Rights.  Each Lender  shall  retain the sole right to
     approve,   without  the  consent  of  any   Participant,   any   amendment,
     modification  or waiver of any provision of the Loan  Documents  other than
     any  amendment,  modification  or  waiver  with  respect  to  any  Loan  or
     Commitment  in  which  such  Participant  has an  interest  which  forgives
     principal,  interest or fees or reduces the  interest  rate or fees payable
     with respect to any such Loan or  Commitment,  postpones any date fixed for
     any  regularly-scheduled  payment of principal  of, or interest or fees on,
     any such Loan or  Commitment,  releases  any  guarantor of any such Loan or
     releases any substantial  portion of collateral,  if any, securing any such
     Loan.

          12.2.3.  Benefit of Setoff.  The Borrower agrees that each Participant
     shall be deemed to have the right of setoff  provided  in  Section  11.1 in
     respect  of its  participating  interest  in amounts  owing  under the Loan
     Documents to the same extent as if the amount of its participating interest
     were owing  directly to it as a Lender under the Loan  Documents,  provided
     that each Lender shall retain the right of setoff  provided in Section 11.1
     with  respect  to the  amount  of  participating  interests  sold  to  each
     Participant.  The Lenders  agree to share with each  Participant,  and each
     Participant,  by exercising  the right of setoff  provided in Section 11.1,
     agrees to share with each  Lender,  any  amount  received  pursuant  to the
     exercise of its right of setoff,  such  amounts to be shared in  accordance
     with Section 11.2 as if each Participant were a Lender.


                                Page 148 of 200
<PAGE>

     12.3. Assignments.

          12.3.1.  Permitted Assignments. Any Lender may, in the ordinary course
     of its business and in accordance  with  applicable law, at any time assign
     to one or more banks or other  entities  ("Purchasers")  all or any part of
     its rights and obligations under the Loan Documents.  Such assignment shall
     be substantially in the form of Exhibit "H" hereto or in such other form as
     may be agreed to by the parties thereto.  The consent of the Borrower shall
     be required  prior to an assignment  becoming  effective  with respect to a
     Purchaser which is not a Lender or an Affiliate thereof; provided, however,
     that if a Default  has  occurred  and is  continuing,  the  consent  of the
     Borrower  shall not be  required.  Such consent  shall not be  unreasonably
     withheld or delayed.  Each such  assignment  shall be in an amount not less
     than the  lesser  of (i)  $5,000,000  or (ii) the  remaining  amount of the
     assigning  Lender's   Commitment   (calculated  as  at  the  date  of  such
     assignment).

          12.3.2.  Effect;  Effective  Date. Upon (i) delivery to the Agent of a
     notice of assignment,  substantially in the form attached as Exhibit "I" to
     Exhibit "H" hereto (a "Notice of  Assignment"),  together with any consents
     required by Section  12.3.1,  and (ii) payment of a $3,000 fee to the Agent
     for processing such  assignment,  such assignment shall become effective on
     the effective date  specified in such Notice of  Assignment.  The Notice of
     Assignment  shall contain a  representation  by the Purchaser to the effect
     that none of the consideration  used to make the purchase of the Commitment
     and Loans under the  applicable  assignment  agreement are "plan assets" as
     defined  under ERISA and that the rights and  interests of the Purchaser in
     and under the Loan Documents will not be "plan assets" under ERISA.  On and
     after the effective date of such  assignment,  such Purchaser shall for all
     purposes be a Lender party to this  Agreement  and any other Loan  Document
     executed by the Lenders and shall have all the rights and  obligations of a
     Lender  under  the  Loan  Documents,  to the same  extent  as if it were an
     original  party hereto,  and no further  consent or action by the Borrower,
     the Lenders or the Agent shall be required to release the transferor Lender
     with  respect  to the  percentage  of the  Aggregate  Commitment  and Loans
     assigned to such  Purchaser.  Upon the  consummation of any assignment to a
     Purchaser pursuant to this Section 12.3.2, the transferor Lender, the Agent
     and the Borrower shall make  appropriate  arrangements so that  replacement
     Notes  are  issued  to  such  transferor   Lender  and  new  Notes  or,  as
     appropriate,  replacement Notes, are issued to such Purchaser, in each case
     in principal amounts  reflecting their Commitment,  as adjusted pursuant to
     such assignment.

     12.4. Dissemination of Information.  The Borrower authorizes each Lender to
disclose to any  Participant  or  Purchaser  or any other  Person  acquiring  an
interest in the Loan Documents by operation of law (each a "Transferee") and any
prospective  Transferee  any and all  information  in such  Lender's  possession
concerning the  creditworthiness of the Borrower and its Subsidiaries;  provided
that each  Transferee and prospective  Transferee  agrees to be bound by Section
9.12 of this Agreement.


                                Page 149 of 200
<PAGE>

     12.5. Tax Treatment. If any interest in any Loan Document is transferred to
any Transferee which is organized under the laws of any jurisdiction  other than
the United States or any State thereof,  the transferor  Lender shall cause such
Transferee, concurrently with the effectiveness of such transfer, to comply with
the provisions of Section 4.3.


                                  ARTICLE XIII

                                     NOTICES
                                     -------

     13.1.  Notices.  Except as otherwise permitted by Section 2.13 with respect
to borrowing  notices,  all notices,  requests and other  communications  to any
party hereunder shall be in writing (including bank wire, facsimile transmission
or similar  writing)  and shall be given to such  party:  (x) in the case of the
Borrower  or the  Agent,  at its  address or  facsimile  number set forth on the
signature  pages  hereof,  (y) in the  case of any  Lender,  at its  address  or
facsimile  number set forth below its signature hereto or (z) in the case of any
party,  such other  address  or  facsimile  number as such  party may  hereafter
specify  for the  purpose  by notice to the  Agent and the  Borrower.  Each such
notice,  request  or  other  communication  shall be  effective  (i) if given by
facsimile  transmission,  when  transmitted to the facsimile number specified in
this Section and confirmation of receipt is received,  (ii) if given by mail, 72
hours  after such  communication  is  deposited  in the mails  with first  class
postage  prepaid,  addressed  as aforesaid or (iii) if given by any other means,
when delivered at the address  specified in this Section;  provided that notices
to the Agent under Article II shall not be effective until received.

     13.2.  Change of Address.  The Borrower,  the Agent and any Lender may each
change the  address  for service of notice upon it by a notice in writing to the
other parties hereto.



                                   ARTICLE XIV

                                  COUNTERPARTS
                                  ------------


     This Agreement may be executed in any number of counterparts,  all of which
taken together shall constitute one agreement, and any of the parties hereto may
execute this Agreement by signing any such counterpart.  This Agreement shall be
effective  when it has been executed by the Borrower,  the Agent and the Lenders
and each party has notified the Agent by telex or  telephone,  that it has taken
such action.

                                Page 150 of 200
<PAGE>


                                   ARTICLE XV

          CHOICE OF LAW, CONSENT TO JURISDICTION, WAIVER OF JURY TRIAL
          ------------------------------------------------------------

     15.1.  CHOICE OF LAW.  THE LOAN  DOCUMENTS  (OTHER THAN THOSE  CONTAINING A
CONTRARY  EXPRESS CHOICE OF LAW PROVISION) SHALL BE CONSTRUED IN ACCORDANCE WITH
THE INTERNAL LAWS (AND NOT THE LAW OF  CONFLICTS) OF THE STATE OF ILLINOIS,  BUT
GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.

     15.2. CONSENT TO JURISDICTION.  THE BORROWER HEREBY IRREVOCABLY  SUBMITS TO
THE  NON-EXCLUSIVE  JURISDICTION  OF ANY UNITED STATES FEDERAL OR ILLINOIS STATE
COURT SITTING IN CHICAGO IN ANY ACTION OR PROCEEDING  ARISING OUT OF OR RELATING
TO ANY LOAN DOCUMENTS AND THE BORROWER HEREBY IRREVOCABLY AGREES THAT ALL CLAIMS
IN RESPECT OF SUCH ACTION OR PROCEEDING  MAY BE HEARD AND DETERMINED IN ANY SUCH
COURT AND  IRREVOCABLY  WAIVES ANY OBJECTION IT MAY NOW OR HEREAFTER  HAVE AS TO
THE VENUE OF ANY SUCH SUIT, ACTION OR PROCEEDING BROUGHT IN SUCH A COURT OR THAT
SUCH COURT IS AN INCONVENIENT FORUM. NOTHING HEREIN SHALL LIMIT THE RIGHT OF THE
AGENT OR ANY LENDER TO BRING  PROCEEDINGS  AGAINST THE BORROWER IN THE COURTS OF
ANY OTHER  JURISDICTION.  ANY JUDICIAL  PROCEEDING  BY THE BORROWER  AGAINST THE
AGENT OR ANY  LENDER  OR ANY  AFFILIATE  OF THE AGENT OR ANY  LENDER  INVOLVING,
DIRECTLY OR  INDIRECTLY,  ANY MATTER IN ANY WAY  ARISING OUT OF,  RELATED TO, OR
CONNECTED  WITH ANY LOAN  DOCUMENT  SHALL BE BROUGHT ONLY IN A COURT IN CHICAGO,
ILLINOIS.

     15.3. WAIVER OF JURY TRIAL. THE BORROWER,  THE AGENT AND EACH LENDER HEREBY
WAIVE  TRIAL  BY  JURY  IN  ANY  JUDICIAL  PROCEEDING  INVOLVING,   DIRECTLY  OR
INDIRECTLY,  ANY MATTER (WHETHER SOUNDING IN TORT, CONTRACT OR OTHERWISE) IN ANY
WAY  ARISING  OUT OF,  RELATED TO, OR  CONNECTED  WITH ANY LOAN  DOCUMENT OR THE
RELATIONSHIP ESTABLISHED THEREUNDER.

                                Page 151 of 200
<PAGE>


     IN WITNESS WHEREOF,  the Borrower,  the Lenders and the Agent have executed
this Agreement as of the date first above written.


                                        SEITEL, INC., as Borrower

                                        By:  /s/ Debra D. Valice
                                             -----------------------------------
                                        Print Name:    Debra D. Valice

                                        Title:    Senior Vice President
                                                  ------------------------------
                                                  50 Briar Hollow Lane W.
                                                  7th Floor
                                                  Houston, Texas  77027

                                        Attention:Debra D. Valice
                                                  Vice President of Finance,
                                                  Chief Financial Officer,
                                                  Treasurer & Secretary
                                        Telephone:(713)627-1990
                                        FAX:      (713)627-1114

          Commitments
          -----------

          $25,000,000


                                        THE FIRST  NATIONAL  BANK OF CHICAGO,
                                             as a Lender and as Agent


                                        By:  /s/ Helen A. Carr
                                             -----------------------------------

                                        Print Name:    Helen A. Carr

                                        Title:    Attorney in fact
                                                  ------------------------------
                                                  One First National Plaza,
                                                  Suite 0634
                                                  Chicago, Illinois  60670

                                        Attention:William P. Laird
                                        Telephone:(312) 732-5635
                                        FAX:      (312) 732-3055


                                Page 152 of 200
<PAGE>

                                        with a copy to:

                                        The First National Bank of Chicago
                                        1100 Louisiana, Suite 3200
                                        Houston, Texas  77002

                                        Attention:     Helen A. Carr
                                        Telephone:     (713) 654-7335
                                        FAX:           (713) 654-7370

- -----------
$25,000,000


                                Page 153 of 200
<PAGE>


                                   EXHIBIT "A"

                                  RATABLE NOTE

$                                                                 July 22, 1996
 -------------------


     Seitel, Inc., a Delaware  corporation (the "Borrower"),  promises to pay to
the order of                     (the "Lender") the lesser of the principal sum
             -------------------
            of Dollars or the aggregate  unpaid  principal amount of all Ratable
- ------------
Loans  made  by the  Lender  to the  Borrower  pursuant  to  Section  2.4 of the
Agreement (as hereinafter  defined),  in immediately available funds at the main
office of The First  National  Bank of Chicago in Chicago,  Illinois,  as Agent,
together with interest on the unpaid principal amount hereof at the rates and on
the dates set forth in the  Agreement.  The Borrower  shall pay the principal of
and accrued and unpaid  interest  on the Ratable  Loans in full on the  Facility
Termination Date.

     The Lender  shall,  and is hereby  authorized  to,  record on the  schedule
attached  hereto,  or to otherwise record in accordance with its usual practice,
the date and  amount  of each  Ratable  Loan  and the  date and  amount  of each
principal  payment  hereunder,  provided  that the  failure  by the Lender to so
record or any mistake in so recording  shall not affect the  obligations  of the
Borrower hereunder.

     This Ratable Note is one of the Notes issued pursuant to, and is subject to
the terms of and  entitled to the benefits of, the  Revolving  Credit  Agreement
dated as of July 22, 1996 (which, as it may be amended or modified and in effect
from time to time, is herein called the  "Agreement"),  among the Borrower,  the
lenders  party  thereto,  including the Lender,  and The First  National Bank of
Chicago,  as Agent, to which Agreement  reference is hereby made for a statement
of the terms and conditions governing this Ratable Note, including the terms and
conditions  under which this Ratable  Note may be prepaid or its  maturity  date
accelerated.  This  Ratable  Note  is  guaranteed  pursuant  to  the  Subsidiary
Guaranty, all as more specifically described in the Agreement,  and reference is
made thereto for a statement of the terms and  provisions  thereof.  Capitalized
terms used herein and not  otherwise  defined  herein are used with the meanings
attributed to them in the Agreement.

     THIS RATABLE NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
INTERNAL  LAWS  (AND NOT THE LAW OF  CONFLICTS)  OF THE STATE OF  ILLINOIS,  BUT
GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.

                                             SEITEL, INC.

                                             By:
                                             Print Name:
                                             Title:

                                Page 154 of 200
<PAGE>

                   SCHEDULE OF LOANS AND PAYMENTS OF PRINCIPAL
                                       TO
                          RATABLE NOTE OF SEITEL, INC.,
                               DATED JULY 22, 1996



             Principal             Maturity           Principal
             Amount of            of Interest           Amount          Unpaid
Date           Loan                 Period               Paid           Balance
- ----         ---------            -----------           ------         ---------







                                Page 155 of 200
<PAGE>


                                   EXHIBIT "B"

                              COMPETITIVE BID NOTE


$25,000,000                                                        July 22, 1996

     Seitel, Inc., a Delaware  corporation (the "Borrower"),  promises to pay to
the  order of                  (the "Lender")  the  aggregate  unpaid  principal
              ----------------
amount of all Competitive Bid Loans made by the Lender to the Borrower  pursuant
to  Section  2.5  of the  Agreement  (as  hereinafter  defined)  in  immediately
available  funds at the main  office of The First  National  Bank of  Chicago in
Chicago,  Illinois,  as Agent,  together with  interest on the unpaid  principal
amount  hereof at the rates  and on the  dates set forth in the  Agreement.  The
Borrower  shall  pay each  Competitive  Bid Loan in full on the last day of such
Competitive Bid Loan's applicable Interest Period.

         The Lender shall,  and is hereby  authorized to, record on the schedule
attached hereto, or otherwise record in accordance with its usual practice,  the
date and  amount of each  Competitive  Bid Loan and the date and  amount of each
principal  payment  hereunder,  provided  that the  failure  by the Lender to so
record or any mistake in so recording  shall not affect the  obligations  of the
Borrower hereunder.

         This  Competitive  Bid Note is one of the Notes issued pursuant to, and
is subject to the terms of and entitled to the benefits of, the Revolving Credit
Agreement dated as of July 22, 1996 (which, as it may be amended or modified and
in  effect  from time to time,  is herein  called  the  "Agreement"),  among the
Borrower,  the  lenders  party  thereto,  including  the  Lender,  and The First
National Bank of Chicago,  as Agent, to which Agreement reference is hereby made
for a statement of the terms and conditions governing this Competitive Bid Note,
including the terms and conditions  under which this Competitive Bid Note may be
prepaid  or  its  maturity  date  accelerated.  This  Competitive  Bid  Note  is
guaranteed  pursuant  to  the  Subsidiary  Guaranty,  all as  more  specifically
described in the Agreement, and reference is made thereto for a statement of the
terms and provisions  thereof.  Capitalized  terms used herein and not otherwise
defined herein are used with the meanings attributed to them in the Agreement.

         THIS  COMPETITIVE  BID  NOTE  SHALL BE  GOVERNED  BY AND  CONSTRUED  IN
ACCORDANCE WITH THE INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE STATE OF
ILLINOIS, BUT GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.

                                             SEITEL, INC.


                                             By:
                                             Print Name:
                                             Title:


                                Page 156 of 200
<PAGE>


                   SCHEDULE OF LOANS AND PAYMENTS OF PRINCIPAL
                                       TO
                              COMPETITIVE BID NOTE
                                 OF SEITEL, INC.
                               DATED JULY 22, 1996


             Principal             Maturity           Principal
             Amount of            of Interest           Amount          Unpaid
Date           Loan                 Period               Paid           Balance
- ----         ---------            -----------           ------         ---------





                                Page 157 of 200
<PAGE>


                                   EXHIBIT "C"

                          COMPETITIVE BID QUOTE REQUEST
                                 (Section 2.5.2)

                                                                         , 19
                                                                    -----    ---

To:       The First National Bank of Chicago,
            as agent (the "Agent")

From:     Seitel, Inc. (the "Borrower")

Re:       Revolving  Credit  Agreement dated as of July 22, 1996,  among Seitel,
          Inc.,  The First National Bank of Chicago,  individually  and as Agent
          and the Lenders parties thereto

     We hereby give notice  pursuant to Section 2.5.2 of the  Agreement  that we
request  Competitive  Bid Quotes  setting forth Absolute Rates for the following
proposed Competitive Bid Advance(s):

Borrowing Date:              , 19
                ------------     ---

Principal Amount 1                                             Interest Period 2
- ----------------                                               ---------------
$


     Upon  acceptance by the  undersigned of any or all of the  Competitive  Bid
Loans offered by Lenders in response to this request,  the undersigned  shall be
deemed to affirm as of such date that the representations and warranties made in
the Agreement are true and correct in all material  respects.  Capitalized terms
used herein have the meanings assigned to them in the Agreement.

                                             SEITEL, INC.

                                             By:
                                             Print Name :
                                             Title:

1    Amount must be at least $2,000,000 and an integral multiple of $1,000,000.


2    From 1 to 29 days,  subject to the provisions of the definition of Absolute
     Rate Interest Period.


                                Page 158 of 200
<PAGE>

                                   EXHIBIT "D"

                      INVITATION FOR COMPETITIVE BID QUOTES
                                 (Section 2.5.3)


                                                                         , 19
                                                                  -------    ---
To:  [Name of Lender]

Re:  Invitation for Competitive Bid Quotes to Seitel, Inc. (the "Borrower")

     Pursuant to Section 2.5.3 of the  Revolving  Credit  Agreement  dated as of
July 22, 1996 (the "Agreement"),  among Seitel, Inc., The First National Bank of
Chicago,  individually  and as Agent,  and the Lenders parties  thereto,  we are
pleased on behalf of the Borrower to invite you to submit Competitive Bid Quotes
setting  forth  Absolute  Rates  to the  Borrower  for  the  following  proposed
Competitive Bid Advance(s):

Borrowing Date:              , 19
                ------------     ---

Principal Amount                                                 Interest Period
- ----------------                                                 ---------------
$


     Your  Competitive Bid Quote must comply with Section 2.5.4 of the Agreement
and the  foregoing  terms in which the  Competitive  Bid Quote Request was made.
Capitalized  terms  used  herein  have  the  meanings  assigned  to  them in the
Agreement.

     Please respond to this  invitation by no later than 9:00 a.m.  Chicago time
on          , 19   .
   --------     ---

                                             THE FIRST NATIONAL BANK OF CHICAGO,
                                             as Agent


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


                                Page 159 of 200
<PAGE>

                                   EXHIBIT "E"
                              COMPETITIVE BID QUOTE
                                 (Section 2.5.4)

                                                                         , 19
                                                                   ------    ---

To:  The First National Bank of Chicago, as Agent Attn:

Re:  Competitive Bid Quote to Seitel, Inc. (the "Borrower")

In response to your  invitation on behalf of the Borrower dated , 19 , we hereby
make the  following  Competitive  Bid Quote  pursuant  to  Section  2.5.4 of the
Revolving Credit Agreement hereinafter referred to and on the following terms:

1.   Quoting Lender:
                     ----------------------
2.   Person to contact at Quoting Lender:
                                          --------------------
3.   Borrowing Date:        , 19   1
                     ------     ---
4.   We hereby offer to make Competitive Bid Loan(s) in the following  principal
     amounts, for the following Interest Periods and at the following rates:

Principal                  Interest                 Absolute             Minimum
 Amount2                    Period3                   Rate4              Amount5
- ---------                  --------                 --------             -------

$





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

1    As specified in the related Invitation.
2    Principal  amount bid for each  Interest  Period  may not exceed  principal
     amount requested. Bids must be made for $2,000,000 and an integral multiple
     of $1,000,000.
3    From 1 to 29 days, as specified in the related Invitation.
4    Specify rate of interest per annum (rounded to the nearest 1/100 of 1%).
5    Specify   minimum  amount  which  the  Borrower  may  accept  (see  Section
     2.3.4(b)(iv).


                                Page 160 of 200
<PAGE>

     We understand  and agree that the offer(s) set forth above,  subject to the
satisfaction  of the  applicable  conditions  set forth in the Revolving  Credit
Agreement dated as of July 22, 1996 (the "Agreement"),  among Seitel,  Inc., The
First  National  Bank of  Chicago,  individually  and as Agent  and the  Lenders
parties thereto,  irrevocably obligate(s) us to make the Competitive Bid Loan(s)
for which any offer(s) are accepted, in whole or in part.


                                             Very truly yours,

                                             [NAME OF LENDER]



Dated:             , 19                      By:
          --------     ---                        ------------------------------
                                                  Authorized Officer




                                Page 161 of 200
<PAGE>

                                   EXHIBIT "F"
                                 FORM OF OPINION

                        GARDERE WYNNE SEWELL & RIGGS, LLP
                                 333 CLAY AVENUE
                                   SUITE 800
                           HOUSTON, TEXAS 77002-4086

                                 July 22, 1996




The First National Bank of Chicago,
  individually and as Agent for Lenders
One First National Plaza
Chicago, Illinois 60670


     Re:  Seitel, Inc. (the "Borrower")
          Our File No. 979275/094
          -----------


Ladies and Gentlemen:

     We have acted as counsel to the  Borrower  and Seitel  Data Corp.  ("SDC"),
Seitel  Delaware,  Inc.  ("SDI"),   Seitel  Management,   Inc.  ("SMI"),  Seitel
Geophysical,  Inc. ("SGI"), DDD Energy, Inc. ("DDD"),  Seitel Gas & Energy Corp.
("SGE"),  Seitel Power Corp. ("SPC"),  Seitel Natural Gas, Inc. ("SNG"),  Matrix
Geophysical,  Inc. ("Matrix"), Exsol, Inc. ("Exsol"), Datatel, Inc. ("Datatel"),
Seitel  Offshore  Corp.  (SOC"),  all  Delaware  corporations,   Geo-Bank,  Inc.
("Geo-Bank") and Alternative  Communication  Enterprises,  Inc. ("ACE"),  each a
Texas corporation,  Seitel International,  Inc. ("SII") and African Geophysical,
Inc. ("AGI"),  each a Cayman Islands corporation,  and Seitel Data Ltd., a Texas
limited  partnership ("SDL", and collectively with SDC, SDI, SMI, SGI, DDD, SGE,
SPC,  SNG,  Matrix,  Exsol,  Datatel,  SOC,  Geo-Bank,  ACE,  SII,  and AGI, the
"Subsidiary  Guarantors," and such Subsidiary  Guarantors  collectively with the
Borrower,  the  "Seitel  Companies")  in  connection  with their  execution  and
delivery of (i) a  Revolving  Credit  Agreement  among the  Borrower,  The First
National  Bank of Chicago,  individually  and as Agent,  and the  Lenders  named
therein  dated as of July  22,  1996  (the  "Agreement")  and (ii) a  Subsidiary
Guaranty dated as of July 22, 1996 made by the Subsidiary Guarantors in favor of
the Agent,  for the benefit of the Lenders.  In acting as such counsel,  we have
examined:

          (a) the Agreement;

          (b) the Notes of even date herewith; and

          (c) the Subsidiary Guaranty.


                                Page 162 of 200
<PAGE>

     The documents  listed in  paragraphs  (a) through (c) above are referred to
herein as the "Loan  Documents."  The  capitalized  terms  used  herein  and not
defined herein have the meanings specified in the Agreement.

     In addition, we have examined such public records and documents,  statutes,
certificates of officers of Borrowers,  and  certificates  of public  officials,
that we deem necessary for this opinion.

     We advise you that we have previously  represented the Borrower and certain
Subsidiary  Guarantors  only with  respect to specific  matters  referred to us.
Consequently,  there are matters of a legal nature  concerning  the Borrower and
the Subsidiary Guarantors of which we have no knowledge.

     In rendering this opinion,  we have assumed the  following:  (i) that Agent
and Lenders are duly organized,  validly existing and in good standing under all
applicable laws and have all requisite  corporate power and authority to execute
and deliver the Loan  Documents and perform the applicable  provisions  thereof;
(ii) that all the Loan Documents to which Agent or Lenders are a party have been
duly  authorized,  executed and delivered by Agent and Lenders;  (iii) that such
instruments are legal,  valid,  binding and enforceable in accordance with their
terms as to Agent  and  Lenders;  (iv)  that  neither  Agent  nor any  Lender is
involved in any court or  administrative  proceeding  relating  to or  otherwise
affecting this transaction or subject to any order,  writ,  injunction or decree
of any court or  governmental  agency or  commission  which would  prohibit  the
execution or delivery of such documents or the  consummation  of any transaction
therein contemplated;  (v) that there is no requirement of consent,  approval or
authorization  by any  person  or  governmental  authority  regarding  the  Loan
Documents  or the  transactions  contemplated  thereby  with respect to Agent or
Lenders;  (vi)  that  all of the  material  terms  and  conditions  of the  loan
contemplated by the Agreement are correctly and completely  embodied in the Loan
Documents;  and (vii) that Agent and Lenders  will comply with all the terms and
provisions  of the Loan  Documents  including,  without  limitation,  the  usury
savings clause  contained  therein.  We have also assumed the genuineness of all
signatures  (except  for the  signatures  of the  Borrower  and  the  Subsidiary
Guarantors),  the authenticity of all documents submitted to us as originals and
the  conformity  to  original  documents  of all  documents  submitted  to us as
certified or photostatic  copies, the correctness of all statements set forth in
certificates or written documents of governmental  officials and certificates or
written   documents   of  the   Borrower  or  the   Subsidiary   Guarantors   or
representatives of the Borrower or the Subsidiary  Guarantors as to corporate or
partnership proceedings, incumbency of officers and other factual matters (which
statements,  to our knowledge,  are correct),  and that none of the parties upon
whom we have relied for  purposes of this opinion has  perpetuated  a fraud upon
any of the parties to the  transactions  contemplated by the Agreement or any of
the attorneys representing any of such parties.


                                Page 163 of 200
<PAGE>

     Our opinions expressed below assume the acceptance of the Loan Documents by
Agent and Lenders so that such instruments have mutuality of binding effect, and
this opinion is to be effective only upon such occurrence.

     Based upon the foregoing and subject to the limitations, qualifications and
exceptions set forth below, we are of the following opinions:

     1.   (a) The Borrower is a corporation duly incorporated,  validly existing
          and in good  standing  under the laws of the State of Delaware and has
          all  requisite  corporate  power and authority to own its property and
          carry on its business as currently conducted.


          (b)  Each  Subsidiary  Guarantor  incorporated  under  the laws of any
          jurisdiction   within  the  United  States  is  a   corporation   duly
          incorporated,  validly existing and in good standing under the laws of
          its state of incorporation  and has all requisite  corporate power and
          authority  to own its  property and carry on its business as currently
          conducted.

          (c) SDL is a limited  partnership  duly organized and validly existing
          under the laws of the state of Texas and has all requisite partnership
          power and  authority  to own its property and carry on its business as
          currently conducted.

     2.   (a) The Borrower has the  requisite  corporate  power and authority to
          execute and deliver the  Agreement and the Notes,  and the  Borrower's
          obligations  under the  Agreement  and the Notes may be performed in a
          manner which is within the Borrower's corporate power and authority.

          (b) The obligations of each Subsidiary  Guarantor  organized under the
          laws of any jurisdiction within the United States under the Subsidiary
          Guaranty may be performed in a manner which is within such  Subsidiary
          Guarantor's corporate power and authority.

     3.   (a) The Loan  Documents  have been duly  authorized  by all  necessary
          corporate  action on the part of the Borrower,  have been executed and
          delivered  by  duly  authorized  officers  of the  Borrower,  and  the
          Agreement  and  the  Notes   constitute   legal,   valid  and  binding
          obligations  of the  Borrower,  enforceable  against  the  Borrower in
          accordance with their terms.

          (b) The Subsidiary  Guaranty has been duly authorized by all necessary
          corporate  or  partnership  action  on  the  part  of  the  Subsidiary
          Guarantors,  has  been  executed  and  delivered  by  duly  authorized
          officers of the Subsidiary  Guarantors that are  corporations and by a
          duly authorized officer of the general partner of SDL, and constitutes
          a legal,  valid and binding  obligation of each  Subsidiary  Guarantor
          organized under the laws of any jurisdiction within the United States,
          enforceable against each such Subsidiary  Guarantor in accordance with
          its terms.


                                Page 164 of 200
<PAGE>

     4.   (a) The  execution  and delivery of the Agreement and the Notes by the
          Borrower will not, and the obligations of the Borrower  thereunder may
          be performed in a manner which will not,  conflict with,  constitute a
          violation of,  result in a breach of any  provision  of,  constitute a
          default under,  or result in the creation or imposition of any Lien or
          encumbrance upon any of the property of the Borrower  pursuant to, the
          certificate  of  incorporation   or  by-laws  of  the  Borrower,   any
          applicable  statute,  rule or  regulation  to which  the  Borrower  is
          subject,  or any order, writ,  judgment,  injunction,  decree,  award,
          agreement or  instrument  known to us to which the Borrower is a party
          or by  which  its  properties  may  be  bound,  except  for  (i)  such
          conflicts,   violations,  breaches,  defaults  or  encumbrances  under
          agreements and  instruments as may have been waived by the other party
          thereto,  or (ii) such conflicts,  violations,  breaches,  defaults or
          encumbrances  under  agreements and instruments  which would not have,
          alone or in the aggregate, a Material Adverse Effect.

          (b) The  obligations  of each of the Subsidiary  Guarantors  organized
          under the laws of any jurisdiction  within the United States under the
          Subsidiary  Guaranty  may be  performed  in a  manner  which  will not
          conflict  with,  constitute a violation  of, result in a breach of any
          provision of, constitute a default under, or result in the creation or
          imposition of any Lien or encumbrance  upon any of the property of any
          such Subsidiary  Guarantors pursuant to the certificate or articles of
          incorporation or by-laws or limited partnership  agreement of any such
          Subsidiary  Guarantor,  any applicable statute,  rule or regulation to
          which any such Subsidiary  Guarantor is subject,  or any order,  writ,
          judgment,  injunction, decree, award, agreement or instrument known to
          us to which any such  Subsidiary  Guarantor is a party or by which its
          respective  properties  may be bound,  except for (i) such  conflicts,
          violations,  breaches,  defaults or encumbrances  under agreements and
          instruments  as may have been  waived by the other party  thereto,  or
          (ii) such conflicts,  violations,  breaches,  defaults or encumbrances
          under agreements and instruments which would not have, alone or in the
          aggregate, a Material Adverse Effect.

     5.   To the best of our  knowledge,  after  inquiry of the  lawyers at this
          firm  identified  in the third  from last  paragraph  of this  opinion
          letter,  there  is  no  judgment,  order,  action,  suit,  proceeding,
          inquiry, order or investigation, at law or in equity, before any court
          or Governmental  Authority,  arbitration  board or tribunal pending or
          threatened  against a Seitel Company which,  if adversely  determined,
          could reasonably be expected to have a Material Adverse Effect.

     6.   No  approval,  authorization,  consent,  adjudication  or order of any
          Governmental  Authority,  which  has not  been  obtained  by a  Seitel
          Company,  is required to be obtained by a Seitel Company in connection
          with the execution and delivery of the Loan Documents to which it is a
          party or the performance of its obligations thereunder.


                                Page 165 of 200
<PAGE>

          The  foregoing  opinions  are  subject  to and  are  qualified  in all
     respects by the following:

          (i) The  enforceability  of the Loan  Documents  may be limited by (a)
          bankruptcy,  insolvency,  reorganization,  moratorium and similar laws
          from time to time in effect  and  affecting  creditors'  rights or the
          collection  of  debtors'  obligations  generally  (including,  without
          limitation,   laws  generally  defining  and  restricting   fraudulent
          conveyances),  (b)  principles  of equity,  (c)  principles  of public
          policy and (d)  requirements  of  commercial  reasonableness  and good
          faith.

          (ii) We express no opinion as to the availability or enforceability of
          certain  provisions  or  remedies  set  forth in the  Loan  Documents,
          including but not limited to those (a) that purport to provide  access
          to  or  restrict   legal  or  equitable   remedies  such  as  specific
          performance  and the  appointment  of a receiver,  (b) that purport to
          establish  evidentiary  standards,  (c) that relate to waivers,  or to
          delays or omissions of enforcement of remedies or severance,  (d) that
          attempt to prohibit or restrict the transfer, alienation,  mortgaging,
          encumbering  or  hypothecation  of any property  described in the Loan
          Documents, (e) that relate to subrogation rights or the waiver thereof
          and (f) that  attempt  to  establish  proper  venue for the filing and
          maintenance  of any  claim,  suit or action  with  respect to the Loan
          Documents;   provided,   however,   that  such   limitations   on  the
          availability  of remedies  under the Loan  Documents or the  legality,
          validity,  binding effect or enforceability of the Loan Documents will
          not,  in our  opinion,  substantially  interfere  with  the  practical
          realization of the benefits expressed in the Loan Documents except for
          the economic  consequences  of any  procedural  delay which may result
          from such laws.

          (iii) We express no opinion as to the  enforceability of provisions in
          the Loan Documents attempting to establish choice of laws.

          (iv) We express no opinion as to the  enforceability  of provisions in
          the Loan Documents as they relate to the rights and obligations  among
          the Lenders and the Agent.

          (v) We express no opinion as to whether  the  investment  in the Notes
          complies  with  any   statutory,   regulatory  or  other  loan  limits
          applicable  to any Lender or complies with any other  statutes,  laws,
          rules  or  regulations   which   prescribe   permissible   and  lawful
          investments for the Lenders (either as to type, amount,  percentage of
          total investments or otherwise).


                                Page 166 of 200
<PAGE>

     Our  "knowledge"  as to any  matters  in  connection  with this  opinion is
limited to the actual knowledge of the lawyers in our firm who have participated
in the  negotiation and preparation of the Loan Documents and such other lawyers
in the firm who have represented the Borrower and the Subsidiary Guarantors that
the lawyer in charge of the matter reasonably believes should be consulted,  and
does not include constructive or imputed knowledge.

     We are  admitted to the Bar in the State of Texas.  This opinion is limited
to United States federal law, laws of the State of Texas, and general  corporate
law of the  State  of  Delaware,  all as now  in  effect,  and we  disclaim  any
responsibility  to inform you of any change  thereto  after the date hereof.  No
opinion is  expressed  as to any matter  that may be governed by the laws of any
other jurisdiction;  provided, however, to the extent that the laws of any state
other than Texas govern the Loan  Documents,  you may rely on our opinion to the
extent  that the laws of such  state or  states  are the same as the laws of the
State of Texas, as to which sameness we express no opinion.

     This  opinion  may be  relied  upon by the  Agent,  the  Lenders  and their
participants, and their assignees and other transferees.


                                        Very truly yours,

                                        GARDERE WYNNE SEWELL & RIGGS, L.L.P.



                                        William Mark Young




                                Page 167 of 200
<PAGE>


                                   EXHIBIT "G"

                             COMPLIANCE CERTIFICATE



To:  The Lenders parties to the Credit Agreement Described Below

     This  Compliance  Certificate is furnished  pursuant to that certain Credit
Agreement dated as of       , 19    (as amended,  modified, renewed or  extended
                      ------    ---
from time to time, the "Agreement")  among Seitel,  Inc. (the  "Borrower"),  the
lenders party thereto and The First  National Bank of Chicago,  as Agent for the
Lenders.  Unless  otherwise  defined  herein,  capitalized  terms  used  in this
Compliance Certificate have the meanings ascribed thereto in the Agreement.

     THE UNDERSIGNED HEREBY CERTIFIES THAT:

     1.   I am the duly elected             of the Borrower;
                                -----------

     2. I have  reviewed  the terms of the  Agreement  and I have made,  or have
caused to be made under my supervision,  a detailed  review of the  transactions
and conditions of the Borrower and its Subsidiaries during the accounting period
covered by the attached financial statements;

     3. The examinations  described in paragraph 2 did not disclose,  and I have
no knowledge  of, the  existence of any  condition or event which  constitutes a
Default  or  Unmatured  Default  during or at the end of the  accounting  period
covered  by  the  attached  financial  statements  or as of  the  date  of  this
Certificate, except as set forth below; and

     4. Schedule I attached  hereto sets forth  financial data and  computations
evidencing the Borrower's  compliance  with certain  covenants of the Agreement,
all of which data and computations are true, complete and correct.

     [5.  Schedule  II  attached  hereto  sets  forth the  determination  of the
interest  rate to be paid for  Advances  commencing  the  first day of the month
following the delivery hereof.]

     [6.  Schedule  III  attached  hereto  sets forth the  various  reports  and
deliveries which are required under the Credit Agreement, the Security Agreement
and the other Loan Documents and the status of compliance.]

     Described below are the exceptions,  if any, to paragraph 3 by listing,  in
detail,  the nature of the  condition or event,  the period  during which it has
existed and the action which the Borrower has taken,  is taking,  or proposes to
take with respect to each such condition or event:

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

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

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

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

     The foregoing  certifications,  together with the computations set forth in
Schedule I [and Schedule II] hereto and the financial  statements delivered with
this Certificate  in  support  hereof, are made and  delivered this       day of
                                                                    ------
         , 19    .
- --------     ----


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




                                Page 168 of 200
<PAGE>

                      SCHEDULE I TO COMPLIANCE CERTIFICATE

                    Compliance as of           , 199    with
                                     ---------      --
                    Provisions           of and            of
                              ----------        ----------
                                  the Agreement



                                Page 169 of 200
<PAGE>

                      SCHEDULE II TO COMPLIANCE CERTIFICATE

                               Rate Determination



                                Page 170 of 200
<PAGE>

                     SCHEDULE III TO COMPLIANCE CERTIFICATE

                             Reports and Deliveries


                                Page 171 of 200
<PAGE>


                                   EXHIBIT "H"

                              ASSIGNMENT AGREEMENT

     This    Assignment   Agreement  (this  "Assignment    Agreement")   between
               (the "Assignor") and             (the  "Assignee") is dated as of
- --------------                      -----------
            , 19    . The parties hereto agree as follows:
- -----------     ---

     1.  PRELIMINARY  STATEMENT.  The Assignor is a party to a Revolving  Credit
Agreement (which, as it may be amended,  modified, renewed or extended from time
to time is herein called the "Credit Agreement") described in Item 1 of Schedule
1  attached  hereto  ("Schedule  1").  Capitalized  terms  used  herein  and not
otherwise  defined  herein  shall have the  meanings  attributed  to them in the
Credit Agreement.


     2. ASSIGNMENT AND ASSUMPTION.  The Assignor hereby sells and assigns to the
Assignee,  and the Assignee hereby  purchases and assumes from the Assignor,  an
interest  in and to the  Assignor's  rights  and  obligations  under the  Credit
Agreement  such that after giving effect to such  assignment  the Assignee shall
have purchased  pursuant to this  Assignment  Agreement the percentage  interest
specified  in Item 3 of  Schedule 1 of all  outstanding  rights and  obligations
under  the  Credit  Agreement  relating  to the  facilities  listed in Item 3 of
Schedule 1 and the other Loan Documents.  The aggregate Commitment (or Loans, if
the  applicable  Commitment  has  been  terminated)  purchased  by the  Assignee
hereunder is set forth in Item 4 of Schedule 1.


     3. EFFECTIVE  DATE. The effective  date of this  Assignment  Agreement (the
"Effective Date") shall be the later of the date specified in Item 5 of Schedule
1 or two Business  Days (or such shorter  period agreed to by the Agent) after a
Notice of Assignment  substantially  in the form of Exhibit "I" attached  hereto
has been  delivered  to the Agent.  Such Notice of  Assignment  must include any
consents required to be delivered to the Agent by Section [12.3.1] of the Credit
Agreement. In no event will the Effective Date occur if the payments required to
be made by the Assignee to the Assignor on the Effective  Date under  Sections 4
and 5 hereof are not made on the proposed  Effective  Date.  The  Assignor  will
notify the  Assignee of the proposed  Effective  Date no later than the Business
Day prior to the proposed  Effective  Date.  As of the Effective  Date,  (i) the
Assignee  shall  have the  rights  and  obligations  of a Lender  under the Loan
Documents  with respect to the rights and  obligations  assigned to the Assignee
hereunder and (ii) the Assignor shall relinquish its rights and be released from
its  corresponding  obligations  under the Loan  Documents  with  respect to the
rights and obligations assigned to the Assignee hereunder.

                                Page 172 of 200
<PAGE>

     4.  PAYMENTS  OBLIGATIONS.  On and after the Effective  Date,  the Assignee
shall be entitled to receive from the Agent all payments of principal,  interest
and fees with  respect to the  interest  assigned  hereby.  The  Assignee  shall
advance funds directly to the Agent with respect to all Loans and  reimbursement
payments  made on or after the  Effective  Date  with  respect  to the  interest
assigned  hereby.  [In  consideration  for the  sale  and  assignment  of  Loans
hereunder,  (i) the Assignee shall pay the Assignor,  on the Effective  Date, an
amount equal to the  principal  amount of the portion of all Floating Rate Loans
assigned to the Assignee hereunder and (ii) with respect to each Fixed Rate Loan
made by the Assignor and assigned to the Assignee hereunder which is outstanding
on the Effective  Date, (a) on the last day of the Interest  Period  therefor or
(b) on such  earlier  date agreed to by the  Assignor and the Assignee or (c) on
the date on which any such Fixed Rate Loan either  becomes due (by  acceleration
or otherwise) or is prepaid (the date as described in the foregoing clauses (a),
(b) or (c) being  hereinafter  referred to as the "Payment Date"),  the Assignee
shall pay the Assignor an amount equal to the principal amount of the portion of
such  Fixed Rate Loan  assigned  to the  Assignee  which is  outstanding  on the
Payment Date.  If the Assignor and the Assignee  agree that the Payment Date for
such Fixed  Rate Loan  shall be the  Effective  Date,  they  shall  agree to the
interest rate applicable to the portion of such Loan assigned  hereunder for the
period  from  the  Effective  Date to the end of the  existing  Interest  Period
applicable to such Fixed Rate Loan (the "Agreed Interest Rate") and any interest
received by the Assignee in excess of the Agreed Interest Rate shall be remitted
to the Assignor. In the event interest for the period from the Effective Date to
but not  including  the Payment Date is not paid by the Borrower with respect to
any Fixed Rate Loan sold by the Assignor to the Assignee hereunder, the Assignee
shall pay to the Assignor  interest for such period on the portion of such Fixed
Rate Loan sold by the Assignor to the Assignee  hereunder at the applicable rate
provided by the Credit  Agreement.  In the event a prepayment  of any Fixed Rate
Loan which is existing on the Payment  Date and  assigned by the Assignor to the
Assignee  hereunder  occurs  after the  Payment  Date but  before the end of the
Interest Period  applicable to such Fixed Rate Loan, the Assignee shall remit to
the  Assignor  the excess of the  prepayment  penalty  paid with  respect to the
portion of such Fixed Rate Loan  assigned  to the  Assignee  hereunder  over the
amount  which would have been paid if such  prepayment  penalty  was  calculated
based on the Agreed  Interest Rate. The Assignee will also promptly remit to the
Assignor  (i) any  principal  payments  received  from the Agent with respect to
Fixed Rate Loans prior to the  Payment  Date and (ii) any amounts of interest on
Loans and fees  received from the Agent which relate to the portion of the Loans
assigned to the Assignee  hereunder for periods prior to the Effective  Date, in
the case of Floating  Rate Loans or fees,  or the Payment  Date,  in the case of
Fixed Rate Loans,  and not previously paid by the Assignee to the Assignor.]* In
the event that either party hereto receives any payment to which the other party
hereto is entitled under this  Assignment  Agreement,  then the party  receiving
such amount shall promptly remit it to the other party hereto.

*  Each  Assignor  may insert its  standard  payment  provisions  in lieu of the
   payment terms included in this Exhibit.


                                Page 173 of 200
<PAGE>

     5. FEES PAYABLE BY THE ASSIGNEE.  The Assignee  shall pay to the Assignor a
fee on each day on which a payment  of  interest  or  [commitment]  fees is made
under the Credit  Agreement with respect to the amounts assigned to the Assignee
hereunder  (other than a payment of interest or  commitment  fees for the period
prior to the  Effective  Date or, in the case of Fixed Rate  Loans,  the Payment
Date,  which the Assignee is  obligated  to deliver to the Assignor  pursuant to
Section 4 hereof).  The amount of such fee shall be the  difference  between (i)
the interest or fee, as applicable, paid with respect to the amounts assigned to
the Assignee hereunder and (ii) the interest or fee, as applicable,  which would
have been paid with respect to the amounts assigned to the Assignee hereunder if
each interest rate was of 1% less than the interest rate paid by the Borrower or
if the  commitment  fee was of 1%  less  than  the  commitment  fee  paid by the
Borrower,  as  applicable.  In  addition,  the  Assignee  agrees to pay % of the
recordation  fee  required  to be paid to the  Agent  in  connection  with  this
Assignment Agreement.


     6.   REPRESENTATIONS  OF  THE  ASSIGNOR;   LIMITATIONS  ON  THE  ASSIGNOR'S
LIABILITY.  The  Assignor  represents  and  warrants  that it is the  legal  and
beneficial  owner of the interest  being  assigned by it hereunder and that such
interest is free and clear of any adverse claim  created by the Assignor.  It is
understood  and agreed that the  assignment  and  assumption  hereunder are made
without  recourse  to  the  Assignor  and  that  the  Assignor  makes  no  other
representation or warranty of any kind to the Assignee. Neither the Assignor nor
any  of its  officers,  directors,  employees,  agents  or  attorneys  shall  be
responsible  for (i)  the due  execution,  legality,  validity,  enforceability,
genuineness,  sufficiency  or  collectability  of any Loan  Document,  including
without  limitation,  documents  granting the  Assignor and the other  Lenders a
security  interest  in  assets  of the  Borrower  or  any  guarantor,  (ii)  any
representation,  warranty or statement made in or in connection  with any of the
Loan  Documents,  (iii)  the  financial  condition  or  creditworthiness  of the
Borrower or any guarantor, (iv) the performance of or compliance with any of the
terms or  provisions of any of the Loan  Documents,  (v)  inspecting  any of the
Property,  books or records of the Borrower, (vi) the validity,  enforceability,
perfection, priority, condition, value or sufficiency of any collateral securing
or  purporting to secure the Loans or (vii) any mistake,  error of judgment,  or
action  taken or  omitted to be taken in  connection  with the Loans or the Loan
Documents.


     7.  REPRESENTATIONS OF THE ASSIGNEE.  The Assignee (i) confirms that it has
received a copy of the Credit  Agreement,  together with copies of the financial
statements requested by the Assignee and such other documents and information as
it has deemed  appropriate to make its own credit analysis and decision to enter
into this  Assignment  Agreement,  (ii) agrees that it will,  independently  and
without  reliance upon the Agent,  the Assignor or any other Lender and based on
such  documents  and  information  at it shall  deem  appropriate  at the  time,
continue to make its own credit  decisions in taking or not taking  action under
the Loan Documents,  (iii) appoints and authorizes the Agent to take such action
as agent on its behalf and to exercise  such powers under the Loan  Documents as


                                Page 174 of 200
<PAGE>

are  delegated to the Agent by the terms  thereof,  together with such powers as
are  reasonably  incidental  thereto,  (iv)  agrees  that  it  will  perform  in
accordance  with their  terms all of the  obligations  which by the terms of the
Loan  Documents are required to be performed by it as a Lender,  (v) agrees that
its  payment  instructions  and  notice  instructions  are as set  forth  in the
attachment to Schedule 1, (vi) confirms that none of the funds,  monies,  assets
or other consideration being used to make the purchase and assumption  hereunder
are "plan  assets" as defined  under  ERISA and that its  rights,  benefits  and
interests in and under the Loan Documents will not be "plan assets" under ERISA,
[and (vii) attaches the forms  prescribed by the Internal Revenue Service of the
United States certifying that the Assignee is entitled to receive payments under
the Loan Documents without deduction or withholding of any United States federal
income taxes].*

*  to be inserted  if the  Assignee is  not  incorporated  under the laws of the
   United States, or a state thereof.

     8.  INDEMNITY.  The  Assignee  agrees to  indemnify  and hold the  Assignor
harmless  against any and all losses,  costs and  expenses  (including,  without
limitation, reasonable attorneys' fees) and liabilities incurred by the Assignor
in connection with or arising in any manner from the Assignee's  non-performance
of the obligations assumed under this Assignment Agreement.


     9.  SUBSEQUENT  ASSIGNMENTS.  After the Effective  Date, the Assignee shall
have the right  pursuant to Section  [12.3.1] of the Credit  Agreement to assign
the rights which are assigned to the Assignee hereunder to any entity or person,
provided  that (i) any such  subsequent  assignment  does not violate any of the
terms and conditions of the Loan Documents or any law, rule, regulation,  order,
writ,  judgment,  injunction or decree and that any consent  required  under the
terms of the Loan  Documents has been obtained and (ii) unless the prior written
consent of the Assignor is obtained,  the Assignee is not thereby  released from
its obligations to the Assignor hereunder, if any remain unsatisfied, including,
without limitation, its obligations under [Sections 4, 5 and 8] hereof.

     10. REDUCTIONS OF AGGREGATE  COMMITMENT.  If any reduction in the Aggregate
Commitment  occurs  between  the  date  of  this  Assignment  Agreement  and the
Effective Date, the percentage  interest specified in Item 3 of Schedule 1 shall
remain the same, but the dollar amount purchased shall be recalculated  based on
the reduced Aggregate Commitment.


     11. ENTIRE AGREEMENT.  This Assignment Agreement and the attached Notice of
Assignment  embody the entire  agreement and  understanding  between the parties
hereto and supersede all prior agreements and understandings between the parties
hereto relating to the subject matter hereof.


                                Page 175 of 200
<PAGE>

     12.  GOVERNING  LAW.  This  Assignment  Agreement  shall be governed by the
internal law, and not the law of conflicts, of the State of Illinois.


     13. NOTICES.  Notices shall be given under this Assignment Agreement in the
manner set forth in the Credit Agreement.  For the purpose hereof, the addresses
of the  parties  hereto  (until  notice of a change is  delivered)  shall be the
address set forth in the attachment to Schedule 1.


     IN WITNESS  WHEREOF,  the parties  hereto  have  executed  this  Assignment
Agreement by their duly authorized officers as of the date first above written.

                                             [NAME OF ASSIGNOR]

                                             By:

                                             Title:




                                             [NAME OF ASSIGNEE]

                                             By:

                                             Title:



                                Page 176 of 200
<PAGE>


                                   SCHEDULE 1
                             to Assignment Agreement

1.   Description and Date of Credit Agreement: Revolving Credit Agreement dated
                                               as of July 22, 1996 among Seitel,
                                               Inc., the  Lenders and  The First
                                               National  Bank  of  Chicago,   as
                                               agent

2.   Date of Assignment Agreement:          , 19
                                   --------      ----

3.   Amounts (As of Date of Item 2 above):


     a.   Total of Commitments
          (Loans)* under
          Credit Agreement                        $
                                                   -------------------

     b.   Assignee's Percentage
          of each Facility purchased
          under the Assignment
          Agreement**                                                 %
                                                  --------------------

     c.   Amount of Assigned Share in
          each Facility purchased under
          the Assignment
          Agreement                               $
                                                   -------------------

4.   Assignee's Aggregate (Loan
     Amount)*  Commitment Amount
     Purchased Hereunder:                         $
                                                   -------------------

5.   Proposed Effective Date:
                                                  --------------------
Accepted and Agreed:

[NAME OF ASSIGNOR]                           [NAME OF ASSIGNEE]

By:                                          By:
Title:                                       Title:


*  If a  Commitment has been  terminated,  insert  outstanding Loans in place of
   Commitment

**   Percentage taken to 10 decimal places


                                Page 177 of 200
<PAGE>


                Attachment to SCHEDULE 1 to ASSIGNMENT AGREEMENT

               Attach Assignor's Administrative Information Sheet,
               which must include notice address for the Assignor
                                and the Assignee




                                Page 178 of 200
<PAGE>


                                   EXHIBIT "I"
                             to Assignment Agreement

                                     NOTICE
                                  OF ASSIGNMENT


                                                                       , 19
                                                               --------     ----
To:  [NAME OF BORROWER]

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

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



     [NAME OF AGENT]

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

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


From:[NAME OF ASSIGNOR] (the "Assignor")

     [NAME OF ASSIGNEE] (the "Assignee")


     1. We refer to that Credit Agreement (the "Credit Agreement")  described in
Item 1 of Schedule 1 attached  hereto  ("Schedule  1").  Capitalized  terms used
herein and not otherwise  defined  herein shall have the meanings  attributed to
them in the Credit Agreement.

     2. This Notice of Assignment  (this "Notice") is given and delivered to the
Borrower and the Agent pursuant to Section 12.3.2 of the Credit Agreement.

     3. The Assignor and the Assignee have entered into an Assignment Agreement,
dated as of          , 19    (the "Assignment"),  pursuant to which, among other
           ---------     ---
things,  the Assignor  has sold,  assigned,  delegated  and  transferred  to the
Assignee, and the Assignee has purchased, accepted and assumed from the Assignor
the percentage  interest  specified in Item 3 of Schedule 1 of all outstandings,
rights and  obligations  under the Credit  Agreement  relating to the facilities
listed in Item 3 of Schedule 1. The Effective  Date of the  Assignment  shall be
the later of the date specified in Item 5 of Schedule 1 or two Business Days (or
such shorter  period as agreed to by the Agent) after this Notice of  Assignment
and any consents and fees  required by Sections  12.3.1 and 12.3.2 of the Credit
Agreement  have been  delivered to the Agent,  provided that the Effective  Date
shall not occur if any  condition  precedent  agreed to by the  Assignor and the
Assignee has not been satisfied.

     4. The Assignor and the Assignee  hereby give to the Borrower and the Agent
notice of the assignment and  delegation  referred to herein.  The Assignor will
confer  with the Agent  before  the date  specified  in Item 5 of  Schedule 1 to
determine  if the  Assignment  Agreement  will  become  effective  on such  date
pursuant to Section 3 hereof,  and will confer with the Agent to  determine  the
Effective  Date  pursuant  to  Section  3 hereof if it  occurs  thereafter.  The
Assignor  shall  notify the Agent if the  Assignment  Agreement  does not become
effective on any proposed  Effective  Date as a result of the failure to satisfy
the  conditions  precedent  agreed to by the Assignor and the  Assignee.  At the
request of the Agent,  the Assignor will give the Agent written  confirmation of
the satisfaction of the conditions precedent.


                                Page 179 of 200
<PAGE>

     5. The  Assignor  or the  Assignee  shall pay to the Agent on or before the
Effective Date the  processing  fee of $3,000  required by Section 12.3.2 of the
Credit Agreement.

     6. If Notes are  outstanding  on the Effective  Date,  the Assignor and the
Assignee  request  and direct that the Agent  prepare and cause the  Borrower to
execute and deliver new Notes or, as  appropriate,  replacements  notes,  to the
Assignor and the Assignee.  The Assignor and, if  applicable,  the Assignee each
agree to deliver to the Agent the original Note received by it from the Borrower
upon its receipt of a new Note in the appropriate amount.

     7. The Assignee advises the Agent that notice and payment  instructions are
set forth in the attachment to Schedule 1.

     8. The Assignee  hereby  represents  and  warrants  that none of the funds,
monies,  assets or other  consideration being used to make the purchase pursuant
to the  Assignment are "plan assets" as defined under ERISA and that its rights,
benefits,  and  interests  in and  under  the Loan  Documents  will not be "plan
assets" under ERISA.

     9. The  Assignee  authorizes  the Agent to act as its agent  under the Loan
Documents in accordance with the terms thereof.  The Assignee  acknowledges that
the Agent has no duty to supply  information with respect to the Borrower or the
Loan Documents to the Assignee until the Assignee  becomes a party to the Credit
Agreement.*

*  May  be  eliminated if Assignee is a party to the Credit  Agreement  prior to
   the Effective Date.

NAME OF ASSIGNOR                             NAME OF ASSIGNEE

By:                                          By:
Title:                                       Title:

ACKNOWLEDGED                                 ACKNOWLEDGED AND CONSENTED TO
 BY [NAME OF AGENT]                          BY SEITEL, INC.

By:                                          By:
Title:                                       Title:

                 [Attach photocopy of Schedule 1 to Assignment]



                                Page 180 of 200
<PAGE>

                                   EXHIBIT "I"
                 LOAN/CREDIT RELATED MONEY TRANSFER INSTRUCTION

To:  The First National Bank of Chicago, as Agent (the "Agent") under the Credit
     Agreement Described Below.

Re:  Credit Agreement,  dated as of July 22, 1996 (as the same may be amended or
     modified, the "Credit Agreement"), among Seitel, Inc. (the "Borrower"), the
     Lenders named therein and the Agent.  Capitalized terms used herein and not
     otherwise  defined herein shall have the meanings  assigned  thereto in the
     Credit Agreement.

     The Agent is specifically authorized and directed to act upon the following
standing money transfer instructions with respect to the proceeds of Advances or
other  extensions  of credit  from time to time until  receipt by the Agent of a
specific  written  revocation of such  instructions  by the Borrower,  provided,
however,  that the Agent may otherwise  transfer funds as hereafter  directed in
writing by the Borrower in accordance with Section 13.1 of the Credit  Agreement
or based on any  telephonic  notice made in accordance  with Section 2.12 of the
Credit Agreement.

Facility Identification Number(s)
                                 -----------------------------------------------

Customer/Account Name
                     -----------------------------------------------------------

Transfer Funds To
                 ---------------------------------------------------------------

For Account No.
               -----------------------------------------------------------------

Reference/Attention To
                      ----------------------------------------------------------

Authorized Officer (Customer Representative)              Date
                                                              ------------------
- --------------------------------------------
(Please Print)
                                                          ----------------------
                                                                   Signature

Bank Officer Name                                         Date
                                                              ------------------
- --------------------------------------------
(Please Print)
                                                          ----------------------
                                                                   Signature


    (Deliver Completed Form to Credit Support Staff For Immediate Processing)


                                Page 181 of 200
<PAGE>


                                   EXHIBIT "J"

                           FORM OF SUBSIDIARY GUARANTY

     THIS  SUBSIDIARY  GUARANTY (this  "Guaranty") is made as of the
                                                                    ------------
day of             , 1996, by                    , a                corporation,
       -----------            ------------------      -------------
,               a                corporation,               , a
 --------------   --------------             --------------     ----------------
corporation,               ,  a                corporation,                 ,  a
            --------------      --------------              ---------------
                corporation,  a                corporation, and                ,
- ---------------                 --------------                  ---------------
a                corporation  (collectively,  the  "Subsidiary  Guarantors")  in
  --------------
favor of the Agent,  for the ratable  benefit of the  Lenders,  under the Credit
Agreement referred to below.


                                   WITNESSETH:

     WHEREAS, Seitel, Inc., a Delaware corporation (the "Principal"),  THE FIRST
NATIONAL BANK OF CHICAGO,  as a Lender and as Agent (the  "Agent"),  and certain
other Lenders from time to time party thereto have entered into a certain Credit
Agreement  dated as of even date  herewith  (as same may be amended or  modified
from time to time, the "Credit Agreement"),  providing, subject to the terms and
conditions  thereof,  for  extensions of credit to be made by the Lenders to the
Principal;

     WHEREAS, it is a condition precedent to the Agent and the Lenders executing
the Credit Agreement that each of the Subsidiary  Guarantors execute and deliver
this Guaranty  whereby each of the  Subsidiary  Guarantors  shall  guarantee the
payment when due,  subject to Section 9 hereof,  of all principal,  interest and
other  amounts  that  shall be at any time  payable by the  Principal  under the
Credit Agreement, the Notes and the other Loan Documents; and

     WHEREAS,  in  consideration  of the  financial  and other  support that the
Principal  has provided,  and such  financial and other support as the Principal
may in the future provide, to the Subsidiary Guarantors,  and in order to induce
the  Lenders  and the  Agent to enter  into the  Credit  Agreement,  each of the
Subsidiary  Guarantors is willing to guarantee the  obligations of the Principal
under the Credit Agreement, the Notes, and the other Loan Documents;

     NOW,  THEREFORE,  in  consideration  of the  premises  and  other  good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged, the parties hereto agree as follows:

     SECTION l.  Definitions.  Terms  defined in the  Credit  Agreement  and not
otherwise defined herein have, as used herein, the respective  meanings provided
for therein.

                                Page 182 of 200
<PAGE>

     SECTION  2.   Representations  and  Warranties.   Each  of  the  Subsidiary
Guarantors  represents and warrants (which  representations and warranties shall
be  deemed to have  been  renewed  upon each  Borrowing  Date  under the  Credit
Agreement) that:

          (a) such  Subsidiary  Guarantor (i) is a corporation  or a partnership
     duly organized, validly existing and in good standing under the laws of its
     jurisdiction of incorporation or organization;  (ii) is duly qualified as a
     foreign  corporation  or  partnership  and  is in  good  standing  in  each
     jurisdiction  in which such  qualification  is required by law,  other than
     those  jurisdictions  as to which the failure to be so qualified or in good
     standing  could  not,  individually  or in  the  aggregate,  reasonably  be
     expected to have a Material Adverse Effect;  and (iii) has the corporate or
     partnership  power and authority to own or hold under lease the  properties
     it  purports  to own or hold under  lease,  to  transact  the  business  it
     transacts  and proposes to transact,  to execute and deliver this  Guaranty
     and to perform the provisions hereof;

          (b) the execution and delivery of this Guaranty and the performance by
     such  Subsidiary  Guarantor  of its  obligations  hereunder  have been duly
     authorized  by all  necessary  corporate  or  partnership  action  and this
     Guaranty  constitutes  a  legal,  valid  and  binding  obligation  of  such
     Subsidiary  Guarantor  enforceable against it in accordance with its terms,
     except as such enforceability may be limited by (i) applicable  bankruptcy,
     insolvency, reorganization,  moratorium or other similar laws affecting the
     enforcement of creditors'  rights generally and (ii) general  principles of
     equity  (regardless  of whether  such  enforceability  is  considered  in a
     proceeding in equity or at law);

          (c)  the  execution,  delivery  and  performance  by  such  Subsidiary
     Guarantor of this  Guaranty will not (i)  contravene,  result in any breach
     of, or constitute a default under, or result in the creation of any Lien in
     respect of any Property of the Borrower or any Restricted Subsidiary under,
     any indenture, mortgage, deed of trust, loan, purchase or credit agreement,
     lease,  corporate  charter  or  by-laws,  partnership  agreement  or  other
     significant  governing  document,  or any other  agreement or instrument to
     which the Borrower or any  Restricted  Subsidiary  is bound or by which the
     Borrower or any Restricted Subsidiary or any of their respective properties
     may be bound or affected,  (ii)  conflict with or result in a breach of any
     of the terms,  conditions or provisions of any order, judgment,  decree, or
     ruling of any court, arbitrator or Governmental Authority applicable to the
     Borrower or any Restricted Subsidiary or (iii) violate any provision of any
     statute  or  other  rule  or  regulation  of  any  Governmental   Authority
     applicable to the Borrower or any Restricted Subsidiary;

          (d) after giving effect to the transactions contemplated by the Credit
     Agreement  and  this  Guaranty  and as of the  date  of its  execution  and
     delivery of this  Guaranty (i) the fair salable value of the assets of such
     Subsidiary Guarantor, taken as a whole, exceeds its liabilities, taken as a
     whole,  (ii) such Subsidiary  Guarantor is able to pay and discharge all of
     its debts (including,  without limitation, its current liabilities) as they
     become due, (iii) such Subsidiary  Guarantor will not be insolvent and will
     not be engaged in any business or transaction for which it has unreasonably
     small assets or capital and (iv) such Subsidiary Guarantor has no intent to
     hinder,  delay or  defraud  any  entity  to which  it is,  or will  become,
     indebted, or to incur debts that would be beyond its ability to pay as they
     mature.

                                Page 183 of 200
<PAGE>

     SECTION  3.  The  Guaranty.  Subject  to  Section  9  hereof,  each  of the
Subsidiary  Guarantors hereby  unconditionally  guarantees the full and punctual
payment  (whether at stated  maturity,  upon  acceleration  or otherwise) of the
principal of and interest on each Note issued by the  Principal  pursuant to the
Credit Agreement, and the full and punctual payment of all other amounts payable
by the  Principal  under  the  Credit  Agreement  and the other  Loan  Documents
including, without limitation, the Obligations (all of the foregoing, subject to
the  provisions  of Section 9 hereof,  being  referred  to  collectively  as the
"Guaranteed  Obligations").  Upon failure by the Principal to pay punctually any
such amount, each of the Subsidiary Guarantors agrees that it shall forthwith on
demand pay the amount  not so paid at the place and in the manner  specified  in
the Credit  Agreement,  any Note or the relevant Loan Document,  as the case may
be.

     SECTION  4.  Guaranty  Unconditional.  Subject  to  Section 9  hereof,  the
obligations  of  each  of  the   Subsidiary   Guarantors   hereunder   shall  be
unconditional   and  absolute  and,  without  limiting  the  generality  of  the
foregoing, shall not be released, discharged or otherwise affected by:

     (i) any extension,  renewal, settlement,  compromise,  waiver or release in
     respect of any obligation of the Principal under the Credit Agreement,  any
     Note, or any other Loan  Document,  by operation of law or otherwise or any
     obligation of any other guarantor of any of the Obligations;

     (ii)  any  modification  or  amendment  of  or  supplement  to  the  Credit
     Agreement, any Note, or any other Loan Document;

     (iii) any release,  nonperfection  or  invalidity of any direct or indirect
     security for any  obligation of the Principal  under the Credit  Agreement,
     any Note, any Loan Document,  or any  obligations of any other guarantor of
     any of the Obligations;

     (iv) any change in the  corporate or  partnership  existence,  structure or
     ownership  of  the  Principal  or  any  other   guarantor  of  any  of  the
     Obligations, or any insolvency, bankruptcy, reorganization or other similar
     proceeding  affecting  the  Principal,   or  any  other  guarantor  of  the
     Obligations,  or its assets or any  resulting  release or  discharge of any
     obligation  of  the  Principal,  or  any  other  guarantor  of  any  of the
     Obligations;

     (v) the existence of any claim, setoff or other rights which the Subsidiary
     Guarantors may have at any time against the Principal,  any other guarantor
     of any of the  Obligations,  the  Agent,  any  Lender or any other  Person,
     whether in connection herewith or any unrelated transactions;


                                Page 184 of 200
<PAGE>

     (vi)  any  invalidity  or  unenforceability  relating  to  or  against  the
     Principal, or any other guarantor of any of the Obligations, for any reason
     related to the Credit Agreement,  any other Loan Document, or any provision
     of applicable  law or regulation  purporting to prohibit the payment by the
     Principal,  or any other guarantor of the Obligations,  of the principal of
     or interest on any Note or any other amount payable by the Principal  under
     the Credit Agreement, the Notes, or any other Loan Document; or

     (vii)  any  other  act or  omission  to act or  delay  of any  kind  by the
     Principal, any other guarantor of the Obligations, the Agent, any Lender or
     any other Person or any other circumstance  whatsoever which might, but for
     the provisions of this Section,  constitute a legal or equitable  discharge
     of any Subsidiary Guarantor's obligations hereunder.

     SECTION 5.  Discharge Only Upon Payment In Full:  Reinstatement  In Certain
Circumstances.  Each of the Subsidiary  Guarantor's  obligations hereunder shall
remain in full force and effect until all Guaranteed Obligations shall have been
paid  in full  and  the  Commitments  under  the  Credit  Agreement  shall  have
terminated  or  expired.  If at any  time any  payment  of the  principal  of or
interest on any Note or any other amount  payable by the  Principal or any other
party under the Credit Agreement or any other Loan Document is rescinded or must
be  otherwise   restored  or  returned  upon  the   insolvency,   bankruptcy  or
reorganization of the Principal or otherwise, each of the Subsidiary Guarantor's
obligations hereunder with respect to such payment shall be reinstated as though
such payment had been due but not made at such time.

     SECTION 6. Waiver of Notice. Each of the Subsidiary Guarantors  irrevocably
waives  acceptance  hereof,  presentment,  demand,  protest  and, to the fullest
extent  permitted by law,  any notice not  provided  for herein,  as well as any
requirement  that at any time any  action  be taken by any  Person  against  the
Principal, any other guarantor of the Obligations, or any other Person.

     SECTION 7. Subrogation. Each of the Subsidiary Guarantors hereby agrees not
to assert any right, claim or cause of action, including,  without limitation, a
claim for subrogation, reimbursement,  indemnification or otherwise, against the
Principal  arising  out of or by  reason  of this  Guaranty  or the  obligations
hereunder,  including, without limitation, the payment or securing or purchasing
of any of the Obligations by any of the Subsidiary  Guarantors  unless and until
the Guaranteed Obligations are paid in full and any commitment to lend under the
Credit Agreement and other Loan Documents is terminated.

     SECTION 8. Stay of Acceleration. If acceleration of the time for payment of
any amount payable by the Principal under the Credit Agreement,  any Note or any
other Loan Document is stayed upon the insolvency,  bankruptcy or reorganization
of the Principal,  all such amounts otherwise subject to acceleration  under the
terms  of the  Credit  Agreement,  any Note or any  other  Loan  Document  shall
nonetheless be payable by each of the Subsidiary  Guarantors hereunder forthwith
on demand by the Agent made at the request of the Required Lenders.


                                Page 185 of 200
<PAGE>

     SECTION 9.  Limitation on  Obligations.  (a) It is the intention of each of
the  Subsidiary   Guarantors  and  the  Lenders  that  each  of  the  Subsidiary
Guarantor's  obligations  hereunder shall be in, but not in excess of, as of any
date,  the greater of the following  (such greater amount  determined  hereunder
being  the  relevant  Subsidiary  Guarantor's  "Maximum  Liability"):   (i)  the
aggregate  amount of all monies  received by the  Subsidiary  Guarantor from the
Principal  after the date  hereof  (whether by loan,  capital  infusion or other
means), or (ii) the maximum amount (such amount being the Subsidiary Guarantor's
"Alternative  Limitation") not subject to avoidance under Title 11 of the United
States Code, as same may be amended from time to time, or any  applicable  state
law  (collectively,  the  "Bankruptcy  Code").  To  that  end,  but  as  to  the
Alternative  Limitation of the  Subsidiary  Guarantors,  only to the extent such
obligations would otherwise be subject to avoidance under the Bankruptcy Code if
the Subsidiary Guarantor is not deemed to have received valuable  consideration,
fair value or reasonably  equivalent  value for its obligations  hereunder,  any
Subsidiary  Guarantor's  obligations  hereunder  shall be reduced to that amount
which,  after giving effect thereto,  would not render the Subsidiary  Guarantor
insolvent,  or leave the Subsidiary Guarantor with an unreasonably small capital
to conduct its  business,  or cause the  Subsidiary  Guarantor to have  incurred
debts (or intended to have incurred  debts) beyond its ability to pay such debts
as they mature,  at the time such  obligations  are deemed to have been incurred
under  the  Bankruptcy  Code.  As  used  herein,   the  terms   "insolvent"  and
"unreasonably small capital" shall likewise be determined in accordance with the
Bankruptcy Code. This Section 9(a) with respect to the Alternative Limitation of
the Subsidiary  Guarantor is intended solely to preserve the rights of the Agent
hereunder to the maximum  extent not subject to avoidance  under the  Bankruptcy
Code, and neither the Subsidiary  Guarantor nor any other person or entity shall
have any right or claim under this Section 9(a) with respect to the  Alternative
Limitation,  except  to the  extent  necessary  so that the  obligations  of the
Subsidiary  Guarantor  hereunder  shall  not  be  rendered  voidable  under  the
Bankruptcy Code.

     (b)  Each  of  the  Subsidiary   Guarantors   agrees  that  the  Guaranteed
Obligations  may at any time and from time-to-time exceed the Maximum  Liability
of each Subsidiary Guarantor,  and may exceed the aggregate Maximum Liability of
all other Subsidiary  Guarantors,  without  impairing this Guaranty or affecting
the rights and  remedies of the Agent  hereunder.  Nothing in this  Section 9(b)
shall be construed to increase any Subsidiary Guarantor's  obligations hereunder
beyond its Maximum Liability.

     (c) In the event any Subsidiary Guarantor (a "Paying Subsidiary Guarantor")
shall make any payment or payments  under this Guaranty or shall suffer any loss
as a result of any realization  upon any collateral  granted by it to secure its
obligations  under  this  Guaranty,  each  other  Subsidiary  Guarantor  (each a
"Non-Paying  Subsidiary  Guarantor")  shall contribute to such Paying Subsidiary
Guarantor an amount equal to such Non-Paying  Subsidiary  Guarantor's  "Pro Rata
Share" of such  payment or payments  made,  or losses  suffered,  by such Paying
Subsidiary  Guarantor.  For the  purposes  hereof,  each  Non-Paying  Subsidiary
Guarantor's  "Pro Rata  Share"  with  respect  to any such  payment or loss by a
Paying  Subsidiary  Guarantor  shall be  determined as of the date on which such
payment  or loss  was made by  reference  to the  ratio  of (i) such  Non-Paying


                                Page 186 of 200
<PAGE>

Subsidiary  Guarantor's Maximum Liability as of such date (without giving effect
to any right to receive,  or obligation to make, any contribution  hereunder) to
(ii) the aggregate  Maximum  Liability of all  Subsidiary  Guarantors  hereunder
(including  such Paying  Subsidiary  Guarantor) as of such date (without  giving
effect  to any  right  to  receive,  or  obligation  to make,  any  contribution
hereunder).   Nothing  in  this  Section  9  (c)  shall  affect  any  Subsidiary
Guarantor's   several   liability  for  the  entire  amount  of  the  Guaranteed
Obligations (up to such Subsidiary  Guarantor's Maximum Liability).  Each of the
Subsidiary  Guarantors  covenants  and  agrees  that its  right to  receive  any
contribution under this Guaranty from a Non-Paying Subsidiary Guarantor shall be
subordinate  and junior in right of payment to all the  Guaranteed  Obligations.
The  provisions  of this  Section 9(c) are for the benefit of both the Agent and
the  Subsidiary  Guarantors  and may be enforced by any one, or more,  or all of
them in accordance with the terms hereof.

     SECTION 10. Notices. All notices,  requests and other communications to any
party  hereunder  shall be  given or made by  telecopier  or other  writing  and
telecopied,  or mailed or delivered to the intended  recipient at its address or
telecopier  number set forth on the signature pages hereof or such other address
or  telecopy  number as such party may  hereafter  specify  for such  purpose by
notice to the Agent in  accordance  with the  provisions  of Section 13.1 of the
Credit  Agreement.  Except as  otherwise  provided  in this  Guaranty,  all such
communications  shall be  deemed to have been duly  given  when  transmitted  by
telecopier,  or personally  delivered or, in the case of a mailed notice sent by
certified mail  return-receipt  requested,  on the date set forth on the receipt
(provided,  that any  refusal  to accept any such  notice  shall be deemed to be
notice  thereof  as of the  time of any such  refusal),  in each  case  given or
addressed as aforesaid.

     SECTION 11. No Waivers.  No failure or delay by the Agent or any Lenders in
exercising  any right,  power or privilege  hereunder  shall operate as a waiver
thereof nor shall any single or partial  exercise  thereof preclude any other or
further exercise thereof or the exercise of any other right, power or privilege.
The rights and remedies  provided in this Guaranty,  the Credit  Agreement,  the
Notes, and the other Loan Documents shall be cumulative and not exclusive of any
rights or remedies provided by law.

     SECTION 12. Successors and Assigns. This Guaranty is for the benefit of the
Agent and the Lenders and their respective  successors and permitted assigns and
in the event of an assignment of any amounts payable under the Credit Agreement,
the Notes,  or the other Loan  Documents,  the rights  hereunder,  to the extent
applicable  to the  indebtedness  so  assigned,  may be  transferred  with  such
indebtedness.  This  Guaranty  shall  be  binding  upon  each of the  Subsidiary
Guarantors and their respective successors and permitted assigns.

     SECTION 13.  Changes in Writing.  Neither this  Guaranty nor any  provision
hereof may be changed,  waived,  discharged  or terminated  orally,  but only in


                                Page 187 of 200
<PAGE>

writing  signed by each of the  Subsidiary  Guarantors  and the  Agent  with the
consent of the Required Lenders.

     SECTION 14.  GOVERNING  LAW;  SUBMISSION  TO  JURISDICTION;  WAIVER OF JURY
TRIAL.  THIS GUARANTY SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE  WITH THE
LAW OF THE STATE OF ILLINOIS.  EACH OF THE SUBSIDIARY  GUARANTORS HEREBY SUBMITS
TO THE  NONEXCLUSIVE  JURISDICTION  OF THE UNITED STATES  DISTRICT COURT FOR THE
NORTHERN  DISTRICT  OF  ILLINOIS  AND OF ANY  ILLINOIS  STATE  COURT  SITTING IN
CHICAGO,  ILLINOIS AND FOR PURPOSES OF ALL LEGAL  PROCEEDINGS  ARISING OUT OF OR
RELATING TO THIS GUARANTY (INCLUDING,  WITHOUT LIMITATION, ANY OF THE OTHER LOAN
DOCUMENTS)  OR THE  TRANSACTIONS  CONTEMPLATED  HEREBY.  EACH OF THE  SUBSIDIARY
GUARANTORS  IRREVOCABLY  WAIVES,  TO THE FULLEST  EXTENT  PERMITTED  BY LAW, ANY
OBJECTION WHICH ANY OF THEM MAY NOW OR HEREAFTER HAVE TO THE LAYING OF THE VENUE
OF ANY SUCH  PROCEEDING  BROUGHT  IN SUCH A COURT  AND ANY  CLAIM  THAT ANY SUCH
PROCEEDING  BROUGHT IN SUCH A COURT HAS BEEN BROUGHT IN AN  INCONVENIENT  FORUM.
EACH OF THE SUBSIDIARY GUARANTORS,  AND THE AGENT AND THE LENDERS ACCEPTING THIS
GUARANTY,  HEREBY  IRREVOCABLY  WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY
LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS GUARANTY OR THE TRANSACTIONS
CONTEMPLATED HEREBY.

     SECTION 15. AGENT FOR SERVICE OF PROCESS.  EACH SUBSIDIARY GUARANTOR HEREBY
IRREVOCABLY AND UNCONDITIONALLY  AGREES THAT PROCESS SERVED EITHER PERSONALLY OR
BY REGISTERED MAIL SHALL  CONSTITUTE,  TO THE EXTENT PERMITTED BY LAW,  ADEQUATE
SERVICE OF PROCESS IN ANY SUIT, ACTION OR PROCEEDING  ARISING OUT OF OR RELATING
TO THIS  GUARANTY,  OR ANY ACTION OR PROCEEDING TO EXECUTE OR OTHERWISE  ENFORCE
ANY  JUDGMENT  IN RESPECT OF ANY BREACH  HEREUNDER,  BROUGHT BY THE AGENT OR ANY
LENDER  AGAINST SUCH  SUBSIDIARY  GUARANTOR OR ANY OF ITS  PROPERTY.  RECEIPT OF
PROCESS SO SERVED  SHALL BE  CONCLUSIVELY  PRESUMED AS  EVIDENCED  BY A DELIVERY
RECEIPT FURNISHED BY THE UNITED STATES POSTAL SERVICE OR ANY COMMERCIAL DELIVERY
SERVICE.  WITHOUT  LIMITING THE  FOREGOING,  SUCH  SUBSIDIARY  GUARANTOR  HEREBY
APPOINTS,  IN THE CASE OF ANY SUCH ACTION OR PROCEEDING BROUGHT IN THE COURTS OR
IN THE STATE OF ILLINOIS:

                              CT CORPORATION SYSTEM
                              208 S. LASALLE STREET
                              CHICAGO, ILLINOIS 60604

TO  RECEIVE,  FOR IT AND ON ITS  BEHALF,  SERVICE OF  PROCESS.  EACH  SUBSIDIARY
GUARANTOR  SHALL AT ALL  TIMES  MAINTAIN  AN AGENT FOR  SERVICE  OF  PROCESS  IN
CHICAGO,  ILLINOIS  AND MAY FROM  TIME TO TIME  APPOINT  SUCCEEDING  AGENTS  FOR


                                Page 188 of 200
<PAGE>

SERVICE OF PROCESS BY  NOTIFYING  THE AGENT OF SUCH  APPOINTMENT,  WHICH  AGENTS
SHALL BE  ATTORNEYS,  OFFICERS OR DIRECTORS  OF SUCH  SUBSIDIARY  GUARANTOR,  OR
CORPORATIONS  WHICH IN THE ORDINARY COURSE OF BUSINESS ACT AS AGENTS FOR SERVICE
OF PROCESS.  NOTHING  HEREIN  SHALL IN ANY WAY BE DEEMED TO LIMIT THE ABILITY OR
RIGHT OF THE AGENT OR ANY  LENDER TO SERVE ANY WRIT,  PROCESS  OR SUMMONS IN ANY
MANNER PERMITTED BY APPLICABLE LAW.

     SECTION 16.  Taxes.  etc.  All  payments  required to be made by any of the
Subsidiary Guarantors hereunder shall be made without setoff or counterclaim and
free and clear of and without deduction or withholding for or on account of, any
present or future taxes, levies,  imposts, duties or other charges of whatsoever
nature imposed by any government or any political or taxing  authority  thereof,
provided,  however,  that if any of the Subsidiary Guarantors is required by law
to make such deduction or withholding, such Subsidiary Guarantor shall forthwith
pay to the Agent or any Lender, as applicable, such additional amount as results
in the net amount received by the Agent or any Lender,  as applicable,  equaling
the full amount  which would have been  received by the Agent or any Lender,  as
applicable, had no such deduction or withholding been made.




                                Page 189 of 200
<PAGE>

         IN WITNESS WHEREOF,  each of the Subsidiary  Guarantors has caused this
Guaranty to be duly executed,  under seal, by its  authorized  officer as of the
day and year first above written.


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

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

                                                  Title:
                                                        ------------------------


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                                                  By:
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                                                  Title:
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                                Page 190 of 200
<PAGE>

                                     ANNEX I

                           [FORM OF JOINDER AGREEMENT]

                                JOINDER AGREEMENT

[DATE]


The First  National  Bank of  Chicago,  as agent for  the  Lenders  party to the
   Credit Agreement referred to below

Ladies and Gentlemen:

     Reference  is made  to the  Guaranty dated as of July    , 1996 (as amended
                                                          ----
or restated from time to time,  the  "Guaranty"),  made by SEITEL DATA CORP.,  a
Delaware  corporation,  SEITEL GEOPHYSICAL,  INC., a Delaware  corporation,  DDD
ENERGY,  INC., a Delaware  corporation,  SEITEL GAS & ENERGY  CORP.,  a Delaware
corporation,  SEITEL POWER CORP.,  a Delaware  corporation,  SEITEL NATURAL GAS,
INC., a Delaware corporation,  MATRIX GEOPHYSICAL, INC., a Delaware corporation,
EXSOL,  INC., a Delaware  corporation,  DATATEL,  INC., a Delaware  corporation,
SEITEL  OFFSHORE  CORP.,  a Delaware  corporation,  POLYMER  DYNAMICS,  INC.,  a
Delaware corporation, SEITEL INTERNATIONAL,  INC., a Cayman Islands corporation,
AFRICAN GEOPHYSICAL, INC., a Cayman Islands corporation, GEO-BANK, INC., a Texas
corporation and ALTERNATIVE COMMUNICATION ENTERPRISES, INC., a Texas corporation
(each a "Subsidiary Guarantor" and collectively,  the "Subsidiary  Guarantors"),
in favor of the Agent for the ratable  benefit of the Lenders (as defined in the
Guaranty).  Capitalized  terms used herein and not  otherwise  defined  have the
meanings ascribed to such terms in the Guaranty.

     [NEW   SUBSIDIARY    GUARANTOR],    a   [jurisdiction   of   incorporation]
corporation/partnership (the "Company"), agrees with you as follows:

     1. Guaranty.  The Company hereby  unconditionally  and expressly  agrees to
become a party to the  Guaranty and to perform and observe each and every one of
the  covenants,   agreements,   terms,  conditions,   obligations,   duties  and
liabilities of a Subsidiary Guarantor thereunder, and that all references to the
Subsidiary  Guarantors in the Guaranty or any document,  instrument or agreement
executed  and  delivered  or  furnished,  or to be  executed  and  delivered  or
furnished,  in  connection  therewith  shall be  deemed to be  references  which
include the Company, as a Subsidiary Guarantor.

                                Page 191 of 200
<PAGE>

     2.  Warranties  and  Representations.   The  Company  hereby  warrants  and
represents that each of the warranties and representations set forth in Sections
2(a) through 2(d), inclusive, of the Guaranty, are true and correct with respect
to the Company as of the date hereof and such warranties and representations are
incorporated by reference  herein in their entirety.  Such  representations  and
warranties shall survive the execution and delivery hereof.

     3. Further  Assurances.  The Company agrees to cooperate with the Agent and
the Lenders and execute such further  instruments  and documents as the Agent or
the Required  Lenders  shall  reasonably  request to effect,  to the  reasonable
satisfaction of the Agent and the Required Lenders, the purposes of this Joinder
Agreement.

     4. Binding Effect. This Joinder Agreement shall be binding upon the Company
and shall inure to the benefit of the Agent and the Lenders and their respective
successors and assigns.

     5. Governing Law;  Submission to Jurisdiction;  Waiver of Jury Trial; Agent
for Service of Process.  This Joinder Agreement shall be construed,  interpreted
and enforced in accordance with, and governed by, the internal laws of the State
of Illinois. The provisions of Sections 14 and 15 of the Guaranty shall apply to
this Joinder  Agreement as if each  reference to "this  Guaranty"  therein was a
reference to this Joinder Agreement.

     IN WITNESS  WHEREOF,  the Company has caused this  Joinder  Agreement to be
executed on its behalf by one of its duly authorized officers.

                                             [NEW SUBSIDIARY GUARANTOR]


                                             By:

                                             Name:

                                             Title:



                                Page 192 of 200
<PAGE>


                                   EXHIBIT "K"

                          FORM OF OPINION TO ACCOMPANY
                                JOINDER AGREEMENT

                                     [Date]

[To be delivered when a new Restricted  Subsidiary  organized  under the laws of
any jurisdiction within the United States is formed or acquired by Borrower]


The First National Bank of Chicago,
  individually and as Agent for Lenders
One First National Plaza
Chicago, Illinois 60670


     Re:  Joinder  Agreement of New Restricted  Subsidiary of Seitel,  Inc. (the
          "Borrower") Our File No. 979275/094


Ladies and Gentlemen:

     Reference is hereby made to that certain  Revolving  Credit Agreement dated
July  22,  1996  among  the  Borrower,  The  First  National  Bank  of  Chicago,
individually and as Agent,  and the Lenders named therein (the  "Agreement") and
(ii) the  Subsidiary  Guaranty  of even date  therewith  made by the  Subsidiary
Guarantors  (as defined  therein) in favor of the Agent,  for the benefit of the
Lenders (the  "Subsidiary  Guaranty").  We have acted as counsel to the Borrower
and the Subsidiary Guarantors in connection with their execution and delivery of
the Agreement and the Subsidiary  Guaranty.  This opinion is delivered to you in
connection  with  the  execution  and  delivery  to you of a  Joinder  Agreement
pursuant to which [new Restricted  Subsidiary],  a new Restricted  Subsidiary of
the  Borrower,  has become  subject to and bound by the terms of the  Subsidiary
Guaranty. In acting as such counsel, we have examined:

     (a)  the Agreement;

     (b)  the Notes;

     (c)  the Subsidiary Guaranty; and

     (d)  a Joinder  Agreement  executed by [new  Restricted  Subsidiary]  dated
                         , 199   .
          ---------------     ---


                                Page 193 of 200
<PAGE>

     The documents  listed in  paragraphs  (a) through (d) above are referred to
herein as the "Loan  Documents."  The  capitalized  terms  used  herein  and not
defined herein have the meanings specified in the Agreement.

     In addition, we have examined such public records and documents,  statutes,
certificates of officers of Borrowers,  and  certificates  of public  officials,
that we deem necessary for this opinion.

     We advise you that we have previously  represented the Borrower and certain
Subsidiary  Guarantors  only with  respect to specific  matters  referred to us.
Consequently,  there are matters of a legal nature  concerning  the Borrower and
the Subsidiary Guarantors of which we have no knowledge.

     In rendering this opinion,  we have assumed the  following:  (i) that Agent
and Lenders are duly organized,  validly existing and in good standing under all
applicable laws and have all requisite  corporate power and authority to execute
and deliver the Loan  Documents and perform the applicable  provisions  thereof;
(ii) that all the Loan Documents to which Agent or Lenders are a party have been
duly  authorized,  executed and delivered by Agent and Lenders;  (iii) that such
instruments are legal,  valid,  binding and enforceable in accordance with their
terms as to Agent  and  Lenders;  (iv)  that  neither  Agent  nor any  Lender is
involved in any court or  administrative  proceeding  relating  to or  otherwise
affecting this transaction or subject to any order,  writ,  injunction or decree
of any court or  governmental  agency or  commission  which would  prohibit  the
execution or delivery of such documents or the  consummation  of any transaction
therein contemplated;  (v) that there is no requirement of consent,  approval or
authorization  by any  person  or  governmental  authority  regarding  the  Loan
Documents  or the  transactions  contemplated  thereby  with respect to Agent or
Lenders;  (vi)  that  all of the  material  terms  and  conditions  of the  loan
contemplated by the Agreement are correctly and completely  embodied in the Loan
Documents;  and (vii) that Agent and Lenders  will comply with all the terms and
provisions  of the Loan  Documents  including,  without  limitation,  the  usury
savings clause  contained  therein.  We have also assumed the genuineness of all
signatures  (except  for the  signatures  of the  Borrower  and  the  Subsidiary
Guarantors),  the authenticity of all documents submitted to us as originals and
the  conformity  to  original  documents  of all  documents  submitted  to us as
certified or photostatic  copies, the correctness of all statements set forth in
certificates or written documents of governmental  officials and certificates or
written   documents   of  the   Borrower  or  the   Subsidiary   Guarantors   or
representatives of the Borrower or the Subsidiary  Guarantors as to corporate or
partnership proceedings, incumbency of officers and other factual matters (which
statements,  to our knowledge,  are correct),  and that none of the parties upon
whom we have relied for  purposes of this opinion has  perpetuated  a fraud upon
any of the parties to the  transactions  contemplated by the Agreement or any of
the attorneys representing any of such parties.

     Our opinions expressed below assume the acceptance of the Loan Documents by
Agent and Lenders so that such instruments have mutuality of binding effect, and
this opinion is to be effective only upon such occurrence.

                                Page 194 of 200
<PAGE>

     Based upon the foregoing and subject to the limitations, qualifications and
exceptions set forth below, we are of the following opinions:

          1. [New  Restricted  Subsidiary] is a corporation  duly  incorporated,
     validly  existing  and in good  standing  under  the  laws of the  State of
                  and has all requisite corporate power and authority to own its
     ------------
     property and carry on its business as currently conducted.

         [or]

               [New  Restricted   Subsidiary]  is  a  limited  partnership  duly
     organized and validly existing under the laws of the State of 
                                                                   -------------
     and has all requisite  partnership  power and authority to own its property
     and carry on its business as currently conducted.

          2. The  obligations of [new Restricted  Subsidiary]  under the Joinder
     Agreement  may be  performed  in a manner  which is  within  such  entity's
     [corporate/partnership] power and authority.

          3. The Joinder  Agreement  has been duly  authorized  by all necessary
     [corporate/partnership]  action on the part of [new Restricted Subsidiary],
     has been  executed  and  delivered  by [a duly  authorized  officer  of new
     Restricted  Subsidiary/a duly authorized  officer of the general partner of
     new  Restricted  Subsidiary],  and  constitutes a legal,  valid and binding
     obligation  of  [new  Restricted  Subsidiary],   enforceable  against  [new
     Restricted Subsidiary] in accordance with its terms.

          4. The  obligations of [new Restricted  Subsidiary]  under the Joinder
     Agreement  may be  performed  in a manner  which  will not  conflict  with,
     constitute  a  violation  of,  result  in a  breach  of any  provision  of,
     constitute a default under,  or result in the creation or imposition of any
     Lien or encumbrance upon any of the property of [new Restricted Subsidiary]
     pursuant to its  [certificate  or articles of  incorporation  or by-laws or
     limited partnership agreement],  any applicable statute, rule or regulation
     to which it is subject, or any order, writ, judgment,  injunction,  decree,
     award,  agreement  or  instrument  known to us to which it is a party or by
     which  its  respective  properties  may  be  bound,  except  for  (i)  such
     conflicts,  violations, breaches, defaults or encumbrances under agreements
     and instruments as may have been waived by the other party thereto, or (ii)
     such  conflicts,  violations,  breaches,  defaults  or  encumbrances  under
     agreements and instruments which would not have, alone or in the aggregate,
     a Material Adverse Effect.

          5. To the best of our knowledge,  after inquiry of the lawyers at this
     firm  identified in the third from last  paragraph of this opinion  letter,
     there is no judgment,  order, action, suit,  proceeding,  inquiry, order or
     investigation,  at law or in  equity,  before  any  court  or  Governmental
     Authority, arbitration board or tribunal pending or threatened against [new
     Restricted Subsidiary] which, if adversely determined,  could reasonably be
     expected to have a Material Adverse Effect.

                                Page 195 of 200
<PAGE>

          6. No approval,  authorization,  consent, adjudication or order of any
     Governmental  Authority,  which has not been  obtained  by [new  Restricted
     Subsidiary],  is required to be obtained by [new Restricted  Subsidiary] in
     connection with the execution and delivery of the Joinder  Agreement or the
     performance of its obligations thereunder.

          The  foregoing  opinions  are  subject  to and  are  qualified  in all
     respects by the following:

               (i) The  enforceability  of the Loan  Documents may be limited by
          (a)  bankruptcy,  insolvency,  reorganization,  moratorium and similar
          laws from time to time in effect and  affecting  creditors'  rights or
          the collection of debtors' obligations generally  (including,  without
          limitation,   laws  generally  defining  and  restricting   fraudulent
          conveyances),  (b)  principles  of equity,  (c)  principles  of public
          policy and (d)  requirements  of  commercial  reasonableness  and good
          faith.

               (ii)  We  express  no   opinion   as  to  the   availability   or
          enforceability of certain provisions or remedies set forth in the Loan
          Documents,  including  but not  limited  to those (a) that  purport to
          provide  access to or restrict  legal or  equitable  remedies  such as
          specific  performance  and the  appointment  of a  receiver,  (b) that
          purport  to  establish  evidentiary  standards,  (c)  that  relate  to
          waivers,  or to delays or  omissions  of  enforcement  of  remedies or
          severance,  (d) that  attempt to prohibit or  restrict  the  transfer,
          alienation,  mortgaging,  encumbering or hypothecation of any property
          described in the Loan Documents, (e) that relate to subrogation rights
          or the waiver  thereof and (f) that attempt to establish  proper venue
          for the  filing and  maintenance  of any  claim,  suit or action  with
          respect  to  the  Loan  Documents;   provided,   however,   that  such
          limitations on the  availability  of remedies under the Loan Documents
          or the legality,  validity,  binding effect or  enforceability  of the
          Loan Documents will not, in our opinion,  substantially interfere with
          the  practical  realization  of the  benefits  expressed  in the  Loan
          Documents except for the economic consequences of any procedural delay
          which may result from such laws.

               (iii)  We  express  no  opinion  as  to  the   enforceability  of
          provisions in the Loan  Documents  attempting  to establish  choice of
          laws.

               (iv) We express no opinion as to the enforceability of provisions
          in the Loan  Documents  as they  relate to the rights and  obligations
          among the Lenders and the Agent.

               (v) We express no opinion  as to whether  the  investment  in the
          Notes  complies  with any  statutory,  regulatory or other loan limits
          applicable  to any Lender or complies with any other  statutes,  laws,
          rules  or  regulations   which   prescribe   permissible   and  lawful
          investments for the Lenders (either as to type, amount,  percentage of
          total investments or otherwise).


                                Page 196 of 200
<PAGE>

     Our  "knowledge"  as to any  matters  in  connection  with this  opinion is
limited to the actual knowledge of the lawyers in our firm who have participated
in the  negotiation and preparation of the Loan Documents and such other lawyers
in the firm who have represented the Borrower and the Subsidiary Guarantors that
the lawyer in charge of the matter reasonably believes should be consulted,  and
does not include constructive or imputed knowledge.

     We are  admitted to the Bar in the State of Texas.  This opinion is limited
to United States federal law, laws of the State of Texas, and general  corporate
law of the  State  of  Delaware,  all as now  in  effect,  and we  disclaim  any
responsibility  to inform you of any change  thereto  after the date hereof.  No
opinion is  expressed  as to any matter  that may be governed by the laws of any
other jurisdiction;  provided, however, to the extent that the laws of any state
other than Texas govern the Loan  Documents,  you may rely on our opinion to the
extent  that the laws of such  state or  states  are the same as the laws of the
State of Texas, as to which sameness we express no opinion.

     This  opinion  may be  relied  upon by the  Agent,  the  Lenders  and their
participants, and their assignees and other transferees.


                                Very truly yours,




                                Page 197 of 200
<PAGE>




                                   EXHIBIT "L"

                       FORM OF LENDER ASSUMPTION AGREEMENT


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

Seitel, Inc.
50 Briar Hollow Lane W.
7th floor
Houston, Texas  77027

Attention:   Debra D. Valice, Vice President of Finance
             Chief Financial Officer, Treasurer and Secretary Treasurer

The First National Bank of Chicago, as agent
One First National Plaza
Chicago, Illinois  60670

Attention:

Ladies and Gentlemen:

     Reference is made to the Revolving  Credit  Agreement  dated as of July 22,
1996 among Seitel,  Inc. (the  "Borrower"),  The First National Bank of Chicago,
individually   and  as  Agent,  and  the  Lenders  named  therein  (the  "Credit
Agreement"), terms defined therein being used herein as therein defined).

     The  undersigned  (the  "Assuming  Lender")  proposes to become an Assuming
Lender pursuant to Section 2.17 of the Credit Agreement and, in that connection,
hereby agrees that it shall become a Lender for purposes of the Credit Agreement
on [applicable  Increase Date] and that its Commitment  shall as of such date be
$                .
 ----------------

     The  undersigned  (i)  confirms  that it has  received a copy of the Credit
Agreement,  together  with  copies of the  financial  statements  referred to in
Section  5.5  thereof,  the most  recent  financial  statements  referred  to in
Sections  6.1(a) and (b) thereof and such other  documents and information as it
has deemed  appropriate  to make its own credit  analysis  and decision to enter
into this Lender Assumption Agreement;  (ii) agrees that it will,  independently
and  without  reliance  upon the  Agent or any  other  Lender  and based on such
documents and information as it shall deem appropriate at the time,  continue to
make its own credit  decisions  in taking or not taking  action under the Credit
Agreement;  (iii) appoints and authorizes the Agent to take such action as agent
on its behalf and to exercise  such  powers  under the Credit  Agreement  as are
delegated to the Agent by the terms  thereof,  together  with such powers as are
reasonably  incidental  thereto;  (iv) agrees that it will perform in accordance
with  their  terms  all of the  obligations  which by the  terms  of the  Credit
Agreement  are required to be  performed by it as a Lender;  (v) agrees that its
payment  instructions and notice instructions are as set forth in the attachment
to Schedule 1; and (vi) attaches,  if it is not  incorporated  under the laws of
the United  States of America or a state  thereof,  the forms  prescribed by the
Internal Revenue Services of the United States required under Section 4.3 of the
Credit Agreement.

     The Assuming Lender requests that the Borrower  deliver to the Agent (to be
promptly  delivered to the Assuming Lender) a Ratable Note and a Competitive Bid
Note  payable to the order of the  Assuming  Lender,  dated as of the  [Increase
Date].


                                Page 198 of 200
<PAGE>

     The  effective  date  for  this  Lender   Assumption   Agreement  shall  be
[applicable Increase Date]. Upon delivery of this Lender Assumption Agreement to
the Company and the Agent,  and  satisfaction  of all  conditions  imposed under
Section 2.17(a) as of [date specified  above],  the undersigned shall be a party
to the  Credit  Agreement  and  have  the  rights  and  obligations  of a Lender
thereunder.  As of [date  specified  above],  the Agent shall make all  payments
under the Credit Agreement in respect of the interest assumed hereby (including,
without limitation, all payments of principal,  interest and commitment fees) to
the Assuming Lender.

     This Lender  Assumption  Agreement may be executed in  counterparts  and by
different  parties  hereto  in  separate  counterparts,  each of  which  when so
executed shall be deemed to be an original and all of which taken together shall
constitute one and the same  agreement.  Delivery of an executed  counterpart by
telecopier shall be effective as delivery of a manually executed  counterpart of
this Lender Assumption Agreement.

     This Lender  Assumption  Agreement  shall be governed by, and  construed in
accordance with, the laws of the State of Illinois.

                                             Very truly yours,

                                             [NAME OF ASSUMING LENDER]

                                             By:
                                             Title:

Acknowledged and Agreed to:

SEITEL, INC.

By:
Title:


THE FIRST NATIONAL BANK OF CHICAGO, as agent

By:
Title:


                                Page 199 of 200

<TABLE> <S> <C>


<ARTICLE>                     5
       
<S>                                      <C>

<PERIOD-TYPE>                                  6-MOS
<FISCAL-YEAR-END>                        DEC-31-1996
<PERIOD-END>                             JUN-30-1996
<CASH>                                        18,902
<SECURITIES>                                       0
<RECEIVABLES>                                 49,214
<ALLOWANCES>                                     800
<INVENTORY>                                        0
<CURRENT-ASSETS>                                   0<F1>
<PP&E>                                        99,165<F2>
<DEPRECIATION>                                12,691
<TOTAL-ASSETS>                               266,557
<CURRENT-LIABILITIES>                              0<F1>
<BONDS>                                       81,057
                              0
                                        0
<COMMON>                                          98
<OTHER-SE>                                   130,766
<TOTAL-LIABILITY-AND-EQUITY>                 266,557
<SALES>                                       47,446
<TOTAL-REVENUES>                              47,446
<CGS>                                          7,669
<TOTAL-COSTS>                                  7,669
<OTHER-EXPENSES>                                   0
<LOSS-PROVISION>                                   0
<INTEREST-EXPENSE>                             1,311
<INCOME-PRETAX>                               11,460
<INCOME-TAX>                                   4,240
<INCOME-CONTINUING>                            7,220
<DISCONTINUED>                                  (988)   
<EXTRAORDINARY>                                    0
<CHANGES>                                          0
<NET-INCOME>                                   6,232
<EPS-PRIMARY>                                   0.62
<EPS-DILUTED>                                   0.61

<FN>
<F1> The Company does not present a classified balance sheet; therefore, current
     assets and current liabilities are not reflected in the Company's financial
     statement.

<F2> PP&E does not include  seismic data bank assets with a cost of $250,681,000
     and related accumulated amortization of $142,823,000.



                                Page 200 of 200

</FN>
        





</TABLE>


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