INPUT OUTPUT INC
10-Q, 1998-03-26
MEASURING & CONTROLLING DEVICES, NEC
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<PAGE>
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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:   FEBRUARY 28, 1998

                                         OR

     [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE 
          SECURITIES EXCHANGE ACT OF 1934
          FOR THE TRANSITION PERIOD FROM _____________ TO ____________     

          COMMISSION FILE NUMBER:  1-13402

                                 INPUT/OUTPUT, INC.
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


           DELAWARE                                               22-2286646
(STATE OR OTHER JURISDICTION OF                                 (IRS EMPLOYER 
INCORPORATION OR ORGANIZATION)                               IDENTIFICATION NO.)


11104 WEST AIRPORT BLVD., STAFFORD, TEXAS                               77477
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                              (ZIP CODE)

         Registrant's telephone number, including area code: (281) 933-3339
                                          
                                          
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  [  ]     

At February 28, 1998 there were 44,451,293 shares of common stock, par value 
$0.01 per share, outstanding.

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

<PAGE>
                         INPUT/OUTPUT, INC. AND SUBSIDIARIES
                                          
                                 INDEX TO FORM 10-Q
                      FOR THE QUARTER ENDED FEBRUARY 28, 1998




PART I.  Financial Information.                              Page
                                                             ----
Item 1.  Financial Statements.

  Consolidated Balance Sheets
    February 28, 1998 and May 31, 1997........................  2

  Consolidated Statements of Operations
     Three and nine months ended February 28, 1998 and 1997...  3

  Consolidated Statements of Cash Flows
     Nine months ended February 28, 1998 and 1997.............  4

  Notes to Consolidated Financial Statements..................  5

Item 2.  Management's Discussion and Analysis of Results
         of Operations and Financial Condition................  8

Item 3.  Quantitative and Qualitative Disclosures about 
         Market Risk.......................................... 15

PART II.  Other Information.

Item 1.  Legal Proceedings.................................... 15

Item 2.  Changes in Securities................................ 16

Item 6.  Exhibits and Reports on Form 8-K..................... 16


                                       1

<PAGE>

                      INPUT/OUTPUT, INC. AND SUBSIDIARIES
                          CONSOLIDATED BALANCE SHEETS    
                       (IN THOUSANDS, EXCEPT SHARE DATA) 
                                  (UNAUDITED)            

                                    ASSETS
                                                   FEBRUARY 28,    MAY 31,
                                                       1998         1997  
                                                   ------------    -------
Current assets:
   Cash and cash equivalents . . . . . . . . . . .  $ 50,347      $  2,573
   Trade accounts receivable, net. . . . . . . . .    64,015        61,788
   Trade notes receivable, net . . . . . . . . . .    38,065        27,800
   Income taxes receivable . . . . . . . . . . . .        --         2,403
   Inventories . . . . . . . . . . . . . . . . . .   114,790       106,337
   Prepaid expenses. . . . . . . . . . . . . . . .     1,172         1,939
                                                    --------      --------
     Total current assets. . . . . . . . . . . . .   268,389       202,840
Long-term trade notes receivable . . . . . . . . .    35,558        27,003
Deferred income tax asset. . . . . . . . . . . . .     2,232         3,097
Property, plant and equipment, net . . . . . . . .    71,752        78,376
Goodwill, net. . . . . . . . . . . . . . . . . . .    58,478        61,024
Other assets . . . . . . . . . . . . . . . . . . .    26,306        12,318
                                                    --------      --------
                                                    $462,715      $384,658
                                                    --------      --------
                                                    --------      --------

     LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
   Accounts payable, principally trade . . . . . .  $ 31,467      $ 13,143
   Accrued expenses. . . . . . . . . . . . . . . .    19,073        18,358
   Current installments of debt. . . . . . . . . .       967           912
   Income taxes payable. . . . . . . . . . . . . .     2,502            --
                                                    --------      --------
     Total current liabilities . . . . . . . . . .    54,009        32,413
Long-term debt . . . . . . . . . . . . . . . . . .    10,270        11,000
Other liabilities. . . . . . . . . . . . . . . . .     1,063         2,631
Stockholders' equity:
   Preferred stock, $.01 par 
     value; authorized 5,000,000 
      shares, none issued. . . . . . . . . . . . .        --            --
   Common stock, $.01 par value; 
     authorized 100,000,000 shares; 
     issued 44,451,293 shares at 
     February 28, 1998 and 43,280,851
     shares at May 31, 1997. . . . . . . . . . . .       445           433
   Additional paid-in capital. . . . . . . . . . .   238,058       218,973
   Retained earnings . . . . . . . . . . . . . . .   162,619       121,116
   Cumulative translation adjustment . . . . . . .    (2,268)       (1,673)
   Unamortized restricted stock compensation . . .    (1,481)         (235)
                                                    --------      --------
     Total stockholders' equity. . . . . . . . . .   397,373       338,614
                                                    --------      --------
                                                    $462,715      $384,658
                                                    --------      --------
                                                    --------      --------

         See accompanying notes to consolidated financial statements.

                                       2

<PAGE>

                          INPUT/OUTPUT, INC. AND SUBSIDIARIES

                          CONSOLIDATED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                                      (UNAUDITED)

<TABLE>
                                              FOR THE THREE MONTHS ENDED    FOR THE NINE MONTHS ENDED
                                                     FEBRUARY 28,                 FEBRUARY 28,
                                              --------------------------    ------------------------- 
                                                  1998          1997           1998          1997      
                                                  ----          ----           ----          ----      
<S>                                           <C>            <C>            <C>           <C>
Net sales and other revenues . . . . . . . .  $    95,266    $    64,773    $   281,919   $   204,821  
Cost of sales. . . . . . . . . . . . . . . .       54,455         40,887        166,003       130,089
                                              -----------    -----------    -----------   ----------- 
      Gross profit . . . . . . . . . . . . .       40,811         23,886        115,916        74,732
                                              -----------    -----------    -----------   ----------- 
Operating expenses:
  Research and development . . . . . . . . .        8,122          5,641         23,738        17,514
  Marketing and sales. . . . . . . . . . . .        4,160          3,456         10,751        10,322
  General and administrative . . . . . . . .        6,572          4,984         21,082        16,161
  Amortization of intangibles. . . . . . . .        1,628          1,118          4,044         3,340
                                              -----------    -----------    -----------   ----------- 
      Total operating expenses . . . . . . .       20,482         15,199         59,615        47,337
                                              -----------    -----------    -----------   ----------- 
Earnings from operations . . . . . . . . . .       20,329          8,687         56,301        27,395
Interest expense . . . . . . . . . . . . . .         (262)          (296)          (842)         (468)
Other income . . . . . . . . . . . . . . . .        2,204            685          5,576         3,412
                                              -----------    -----------    -----------   ----------- 
Earnings before income taxes . . . . . . . .       22,271          9,076         61,035        30,339
Income taxes . . . . . . . . . . . . . . . .        7,127          2,904         19,532         9,709
                                              -----------    -----------    -----------   ----------- 
Net earnings . . . . . . . . . . . . . . . .  $    15,144    $     6,172    $    41,503   $    20,630
                                              -----------    -----------    -----------   ----------- 
                                              -----------    -----------    -----------   ----------- 
Basic earnings per common share. . . . . . .  $      0.34    $      0.14    $      0.95   $      0.48
                                              -----------    -----------    -----------   ----------- 
                                              -----------    -----------    -----------   ----------- 
Weighted average number of common 
shares outstanding . . . . . . . . . . . . .   44,157,319     43,248,318     43,758,807    43,148,387
                                              -----------    -----------    -----------   ----------- 
                                              -----------    -----------    -----------   ----------- 
Diluted earnings per common share. . . . . .  $      0.34    $      0.14    $      0.94   $      0.47      
                                              -----------    -----------    -----------   ----------- 
                                              -----------    -----------    -----------   ----------- 
Weighted average number of common and
common equivalent shares outstanding . . . .   44,564,745     43,742,770     44,257,576    43,873,227  
                                              -----------    -----------    -----------   ----------- 
                                              -----------    -----------    -----------   ----------- 
</TABLE>

               See accompanying notes to consolidated financial statements.

                                       3

<PAGE>

                        INPUT/OUTPUT, INC. AND SUBSIDIARIES

                       CONSOLIDATED STATEMENTS OF CASH FLOWS
                                  (IN THOUSANDS)
                                   (UNAUDITED)

<TABLE>
                                                                   NINE MONTHS ENDED
                                                                      FEBRUARY 28,
                                                                 -------------------- 
                                                                    1998       1997
                                                                    ----       -----
<S>                                                              <C>         <C>
Cash flows from operating activities:
  Net earnings . . . . . . . . . . . . . . . . . . . . . . . . . $ 41,503    $ 20,630
  Adjustments to reconcile net earnings to net cash 
    provided by (used in) operating activities:
     Depreciation and amortization . . . . . . . . . . . . . . .   12,096       8,976
     Amortization of restricted stock compensation . . . . . . .      154         500
     Deferred income taxes . . . . . . . . . . . . . . . . . . .      865         429
     Pension costs . . . . . . . . . . . . . . . . . . . . . . .      277         323
                                                                 --------    -------- 
                                                                   54,895      30,858
     Changes in assets and liabilities:
       Receivables . . . . . . . . . . . . . . . . . . . . . . .  (20,058)    (20,865)
       Inventories . . . . . . . . . . . . . . . . . . . . . . .   (7,944)    (25,122)
       Leased equipment. . . . . . . . . . . . . . . . . . . . .    3,355      (2,362)
       Accounts payable and accrued expenses . . . . . . . . . .   18,016      (4,969)
       Income taxes. . . . . . . . . . . . . . . . . . . . . . .    5,059      (2,726)
       Other . . . . . . . . . . . . . . . . . . . . . . . . . .     (569)       (230)
                                                                 --------    -------- 
       Net cash provided by (used in) operating activities . . .   52,754     (25,416)

Cash flows from investing activities:
  Purchases of property, plant and equipment . . . . . . . . . .   (4,363)    (24,793)
  Acquistion of net assets and business, net of cash acquired. .  (10,803)         --  
  Investment in other assets . . . . . . . . . . . . . . . . . .     (324)     (1,445)
                                                                 --------    -------- 
          Net cash used in investing activities. . . . . . . . .  (15,490)    (26,238)

Cash flows from financing activities:
  Borrowing from bank. . . . . . . . . . . . . . . . . . . . . .       --      20,750
  Payments on debt . . . . . . . . . . . . . . . . . . . . . . .     (675)     (5,921)
  Proceeds from exercise of stock options
    and related tax benefit. . . . . . . . . . . . . . . . . . .   10,857       4,627
  Employee Stock Purchase Plan . . . . . . . . . . . . . . . . .      465          --
                                                                 --------    -------- 
          Net cash provided by financing activities. . . . . . .   10,647      19,456

Effect of foreign currency exchange rates. . . . . . . . . . . .     (137)       (511)
                                                                 --------    -------- 
Net increase (decrease) in cash and cash equivalents . . . . . .   47,774     (32,709)
Cash and cash equivalents at beginning of year . . . . . . . . .    2,573      34,252
                                                                 --------    -------- 
Cash and cash equivalents at end of period . . . . . . . . . . . $ 50,347    $  1,543
                                                                 --------    -------- 
                                                                 --------    -------- 
</TABLE>
          See accompanying notes to consolidated financial statements.

                                       4

<PAGE>

                     INPUT/OUTPUT, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  (UNAUDITED)
                                       

(1)  GENERAL

     The consolidated financial statements included herein have been prepared 
by the Company, without audit, pursuant to the rules and regulations of the 
Securities and Exchange Commission. The financial statements reflect all 
adjustments (consisting of normal recurring accruals) which are, in the 
opinion of management, necessary to fairly present such information. Although 
the Company believes that the disclosures are adequate to make the 
information presented not misleading, certain information and footnote 
disclosures, including significant accounting policies, normally included in 
financial statements prepared in accordance with generally accepted 
accounting principles have been omitted pursuant to such rules and 
regulations. It is suggested that these financial statements be read in 
conjunction with the consolidated financial statements and the notes thereto, 
as well as Item 7.  "Management's Discussion and Analysis of Results of 
Operations and Financial Condition," included in the Company's Annual Report 
on Form 10-K for the year ended May 31, 1997, as filed with the Securities 
and Exchange Commission.

(2)  INVENTORIES    

     Inventories are stated at the lower of cost (primarily first-in, 
first-out) or market. A summary of inventories follows (in thousands):

<TABLE>
                               FEBRUARY 28     May 31,
                                  1998          1997
                               ----------     --------
<S>                            <C>            <C>
Raw materials                   $ 65,982      $ 56,573
Work-in-process                   25,129        23,878
Finished goods                    23,679        25,886
                                --------      --------
                                $114,790      $106,337
                                --------      --------
                                --------      --------
</TABLE>

(3)  EARNINGS PER SHARE

     The Company adopted the Financial Accounting Statements Board Statement 
of Financial Accounting Standards No. 128, "Earnings per Share" (SFAS 128) 
during the third quarter of 1998.  In accordance with this new pronouncement, 
basic earnings per share is computed by dividing net earnings available to 
common share holders by the weighted average number of common shares 
outstanding during the period.  Diluted earnings per share is determined on 
the assumption that outstanding dilutive stock options have been exercised 
and the aggregate proceeds as defined were used to reacquire Company common 
stock using the average price of such common stock for the period. Prior 
period earnings per share amounts have been restated in accordance with the 
requirements of the pronouncement.

                                       5
<PAGE>

                     INPUT/OUTPUT, INC. AND SUBSIDIARIES
                                       
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS     
                                 (CONTINUED)
                                 (UNAUDITED)

     The following table summarizes the calculation of net earnings and 
weighted average common shares and common equivalent shares outstanding for 
purposes of the computation of earnings per share.

<TABLE>
                                                    FOR THE THREE MONTHS ENDED  FOR THE NINE MONTHS ENDED
                                                           FEBRUARY 28,               FEBRUARY 28,
                                                    --------------------------- -------------------------
                                                        1998          1997           1998         1997
                                                     ----------    ----------     ---------     --------
<S>                                                 <C>            <C>          <C>           <C>
Net earnings available to common stockholders
(in thousands)                                          $15,144        $6,172       $41,503      $20,630

Weighted average number of common 
shares outstanding                                   44,157,319    43,248,318    43,758,807   43,148,387

Common stock equivalent of stock options                407,426       494,452       498,769      724,840
                                                     ----------    ----------    ----------   ----------

Weighted average number of common shares and
common shares equivalent outstanding                 44,564,745    43,742,770    44,257,576   43,873,227
                                                     ----------    ----------    ----------   ----------
                                                     ----------    ----------    ----------   ----------

Basic earnings per common share                         $  0.34       $  0.14       $  0.95      $  0.48
                                                        -------       -------       -------      -------
                                                        -------       -------       -------      -------

Diluted earnings per common share                       $  0.34       $  0.14       $  0.94      $  0.47
                                                        -------       -------       -------      -------
                                                        -------       -------       -------      -------
</TABLE>

(4) STATEMENTS OF CASH FLOWS

     The Company considers all highly liquid investments purchased with an 
original maturity of three months or less to be cash equivalents. Similar 
investments with original maturities beyond three months are considered 
short-term investments available for sale and are carried at fair value. The 
Company does not use or intend to use derivatives. Exchange rate fluctuations 
have not had a material effect on the Company's Statements of Cash Flows.

     Supplemental disclosures of cash flow information for the nine months ended
February 28, 1998 and 1997 follow (in thousands):

<TABLE>
                                                      1998      1997
                                                     ------    ------
<S>                                                  <C>       <C>
Cash paid during the periods for:       

     Interest (net of amount capitalized)            $  892    $  416
     Income taxes                                    $7,947    $9,418
</TABLE>

                                       6
<PAGE>

                     INPUT/OUTPUT, INC. AND SUBSIDIARIES      

                                          
                 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 (CONTINUED)
                                 (UNAUDITED)

<TABLE>
                                                                 1998     1997
                                                               -------   -----
<S>                                                            <C>       <C>
Non-cash investing and financing activities:
  Restricted stock issued:
     Increase in common stock                                  $     1   $  --
     Increase in paid in capital                                 1,572      --
     Increase in unamortized restricted stock compensation      (1,573)     --
                                                               -------   -----
                                                               $    --   $  --
                                                               -------   -----
                                                               -------   -----

Issuance of common stock in
  connection with business acquisition (320,555 shares):
     Increase in common stock                                  $     3   $  --
     Increase in paid in capital                                 6,372      --
                                                               -------   -----
                                                               $ 6,375   $  --
                                                               -------   -----
                                                               -------   -----
</TABLE>

(5)  LONG TERM DEBT

     In August 1996, the Company, through one of its wholly-owned 
subsidiaries, obtained a $12.6 million, ten-year term loan secured by certain 
of its land and buildings located in Stafford, Texas which includes the 
Company's executive offices, research and development headquarters, and 
electronics manufacturing facility.  The term loan, which the Company has 
guaranteed under a Limited Guaranty, bears interest at a fixed rate of 7.875% 
per annum.  The Company leases all of the property from its subsidiary under 
a master lease, which lease has been collaterally assigned to the lender as 
security for the term loan.  The term loan provides for penalties for 
prepayment prior to maturity.

(6)  RECENT ACCOUNTING PRONOUNCEMENTS

          In June 1997, the Financial Accounting Standards Board issued 
Statement of Financial Accounting Standards No. 130, "Reporting Comprehensive 
Income" (SFAS 130). SFAS 130 establishes standards for reporting and display 
of comprehensive income and its components in a full set of general purpose 
financial statements. The requirements of this statement will be effective 
for both interim and annual periods beginning with the Company's fiscal year 
ending May 31, 1999. Management does not believe that the implementation of 
SFAS 130 will have a material effect on the financial statements.

                                       7
<PAGE>

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

RESULTS OF OPERATIONS

     NET SALES AND OTHER REVENUES.  The Company's third quarter net sales and 
other revenues increased $30.5 million, or 47.1%, to $95.3 million as 
compared to the prior year's third quarter net sales and other revenues of 
$64.8 million. The increase in sales revenues was primarily due to continued 
demand for the Company's land systems and components for expansion of 
existing systems. During the third quarter, six I/O SYSTEM TWO-Registered 
Trademark- land systems and two MSX marine systems were sold, along with 
other seismic data acquisition recording equipment and components for 
expanding existing systems (for a total channel capacity of 25,356 land and 
7,712 marine), compared to the prior year's third quarter sales of eight I/O 
SYSTEM TWO land systems and five MSX marine systems and other recording 
equipment and components (for a total channel capacity of 10,172 land and 
4,288 marine).

     Net sales and other revenues for the first nine months of the current 
year were $281.9 million, up 37.6% from $204.8 million for last year's first 
nine month period, reflecting continued demand for the Company's systems, 
recording equipment and components for expansion of existing systems. Sales 
of 37 I/O SYSTEM TWO land systems and four MSX marine systems (for a total 
channel capacity of 82,872 land and 13,074 marine) were recorded during the 
first nine months of fiscal 1998 compared to 30 I/O SYSTEM TWO land systems 
and eight MSX marine systems (for a total channel capacity of 49,728 land and 
7,232 marine) for the prior year's first nine months.

          GROSS PROFIT MARGIN.  The Company's gross profit margin increased 
for the third quarter and year-to-date compared to the prior year's 
comparable periods, from 36.9% to 42.8%, and 36.5% to 41.1% respectively. 
Continued demand for seismic equipment and instrumentation and the resulting 
sales of land systems and land system expansion components, which typically 
feature higher margins than the Company's marine systems and other equipment, 
were major contributing factors to the improved gross profit margins. The 
Company's gross profit margin for any particular reporting period is 
dependent on the product mix sold and the pricing scheme for the products 
sold for that period and may vary from period to period.

     OPERATING EXPENSES.  Operating expenses increased $5.3 million, or 
34.8%, for the third quarter over the prior year's third quarter operating 
expenses. Research and development expenses increased $2.5 million, or 44.0%, 
compared to the prior year's third quarter, primarily resulting from 
increased development and enhancement efforts, recent acquisitions and 
increased usage of outside engineering services. Marketing and sales expenses 
increased $704,000, or 20.4%, compared to the prior year's third quarter 
primarily due to outside commissions on increased third party sales. General 
and administrative expenses increased $1.6 million, or 31.9%, primarily due 
to an increase in allowance for doubtful accounts resulting from increased 
sales, increased outside services and increased depreciation. Amortization of 
intangibles increased $510,000, or 45.6%, primarily due to increased goodwill 
expense resulting from acquisitions.

     Operating expenses for the first nine months of the current year were 
$12.3 million, or 25.9%, above operating expenses for the first nine months 
of the prior year. Research and development expense increased $6.2 million, 
or 35.5%, compared to the prior year's first nine months, primarily resulting 
from increased development and enhancement efforts, recent acquisitions and 
increased usage of outside engineering services. Marketing and sales expense 
increased $429,000, or 4.2%, compared to the prior year's first nine months. 
General and administrative expenses increased $4.9 million, or 30.4%, 
primarily due to increased compensation expense (mainly attributable to the 
first six months of fiscal 1998) and 

                                       8
<PAGE>

increased allowance for doubtful accounts resulting from increased sales. 
Amortization of intangibles increased $704,000, or 21.1%, primarily due to 
increased goodwill expense resulting from acquisitions.

     INTEREST EXPENSE.  As a result of the ten-year term facilities financing 
completed in August 1996, interest expense for the third quarter and the 
first nine months of the current year was $262,000 and $842,000 respectively. 
See "Note (5) - Long-Term Debt" of the Notes to Consolidated Financial 
Statements. Interest expense for  last year's third quarter and first nine 
months was $296,000,and $468,000 respectively, representing interest on this 
facility.

     INCOME TAX EXPENSE.  The Company's effective income tax rate was 
approximately 32%, both for the third quarter and the first nine months of 
1998 and 1997.

LIQUIDITY AND CAPITAL RESOURCES

     GENERAL.  The Company has traditionally financed its operations from 
internally generated cash flow, funds from equity financings and its credit 
facilities. Operating funds flows (which does not consider changes in 
operating assets and liabilities) were $54.9 million for the nine months 
ended February 28, 1998. Cash flows from operating activities were $52.8 
million for the nine months ended February 28, 1998, primarily due to higher 
net earnings and increases in accounts payable and accrued expenses (which 
represented a source of cash) as a result of the increased levels of sales 
and related increases in inventory during fiscal 1998. As of February 28, 
1998 the Company had no borrowings outstanding under its revolving line of 
credit. On February 27, 1998 the Company entered into a new revolving working 
capital facility; see "Credit Agreement" below.

     For the first nine months of 1998, the Company has experienced higher 
levels of cash and cash equivalents (approximately $50.3 million as of 
February 28, 1998) as a result of increased sales during 1998 to date 
compared to the first nine months of 1997 sales. Trade notes receivable 
increased 34.3% compared to May 31, 1997, proportionately with the increased 
level of sales. For information concerning the Company's sales finance 
activities, see "Item 1. Business - Markets and Customers" of the Company's 
Annual Report on Form 10-K for the year ended May 31, 1997. Accounts payable 
and accrued expenses at February 28, 1998 were 60.4% higher than at May 31, 
1997, primarily reflecting the increased levels of sales and increase in 
inventory during the first nine months of fiscal 1998. The Company's various 
working capital accounts can vary in amount substantially from period to 
period depending upon the Company's levels of sales, product mix sold, demand 
for its products, percentages of cash versus credit sales, collection rates, 
inventory levels, and general economic and industry factors.

     In August 1996, a subsidiary of the Company borrowed $12.6 million in 
long-term financing secured by the land, buildings and improvements housing 
the Company's executive offices, research and development headquarters and 
electronics manufacturing facility in Stafford, Texas. The loan bears 
interest at the rate of 7.875% per annum and is repayable in equal monthly 
installments of principal and interest of $151,439. The promissory note, 
which matures on September 1, 2006, contains prepayment penalties.  See "Note 
(5) - Long-Term Debt" of the Notes to Consolidated Financial Statements.

     The Company anticipates current year expenditures for exploration and 
development of oil and gas properties to be approximately $2.5 million and 
expects to fund these expenditures from its cash flows from operations. 
However, the Company currently expects that its future level of participation 
in oil and gas drilling activities will be funded primarily by cash flows 
from its productive properties. The Company has drilled one well to date in 
1998, which was a dry hole. The Company expects to participate in up to three 
wells in 1998.

                                       9
<PAGE>

     Capital expenditures totaled $15.2 million for the first nine months of 
1998, representing $10.8 million for acquisition of net assets and 
businesses, and $4.4 million for purchases of property, plant and equipment. 
Total capital expenditures are currently expected to aggregate $17.0 million 
for 1998. The Company believes that the combination of its existing working 
capital, unused credit available under its revolving credit facility, 
internally generated cash flow and access to other financing sources will be 
adequate to meet its anticipated capital and liquidity requirements for the 
foreseeable future.

     CREDIT AGREEMENT.  On February 27, 1998, the Company entered into a 
Credit Agreement with certain lenders, including Bank One, Texas, N.A., as 
administrative agent for the lenders. The credit facility under the Credit 
Agreement replaces the Company's existing revolving working capital line of 
credit. The maximum amount available for borrowings under the Credit 
Agreement is $50 million. In addition, up to $15 million of credit available 
under the Credit Agreement may be used, as needed, by the Company for letters 
of credit. Indebtedness under the Credit Agreement will mature on February 
27, 2001. Borrowings under the Credit Agreement may be made to finance the 
Company's working capital, capital expenditures, acquisitions permitted under 
the Credit Agreement and for general corporate purposes. Outstanding 
indebtedness under the Credit Agreement will bear interest, at the Company's 
option, at fluctuating interest rates based upon a prime rate or a eurodollar 
rate plus a credit margin that fluctuates depending upon the Company's ratio 
of funded debt to capitalization. In addition, the Company must pay a 
commitment fee for unused amounts available under the credit facility, in an 
amount also based upon the Company's ratio of funded debt to capitalization.

     The obligations of the Company under the Credit Agreement are unsecured, 
except for a first lien pledge of the capital stock of certain wholly-owned 
subsidiaries of the Company that the lenders consider to be "material 
subsidiaries". Additionally, certain of these wholly-owned subsidiaries have 
guaranteed the Company's obligations under the Credit Agreement.

     The Credit Agreement contains certain covenants, representations and 
warranties by the Company, including (i) restrictions on liens on the assets 
of the Company and its subsidiaries, (ii) limitations on acquisitions of 
unaffiliated businesses, (iii) limitations on mergers, consolidations and the 
sale of substantially all of the assets of the Company or its subsidiaries, 
and (iv) limitations on indebtedness permitted to be incurred or assumed by 
the Company and its subsidiaries, and certain investments (including 
investments in partnerships and joint ventures) that may be made by the 
Company and its subsidiaries, if such indebtedness or investments would 
result in the failure by the Company to be in compliance with its financial 
ratios and other covenants.

     The Credit Agreement also contains provisions restricting the amount of 
capital expenditures (excluding capital expenditures in connection with 
permitted acquisitions) that the Company and its subsidiaries may make in any 
fiscal year ($30 million for any fiscal year). Further, the Credit Agreement 
requires the Company to maintain and comply with certain financial covenants 
and ratios, including a current ratio, a maximum funded debt to 
capitalization ratio, a fixed charge coverage ratio and a covenant requiring 
that the Company maintain a certain minimum tangible net worth.

     YEAR 2000.  Historically, most computer systems have utilized software 
that processes transactions using two digits to represent the year of the 
transaction (i.e., 97 represents the year 1997). This software needs to be 
modified to properly process dates beyond December 31, 1999 and to avoid 
miscalculation or system failures (the "Year 2000 issue"). The Company is 
currently working to resolve the potential impact of the Year 2000 issue on 
the computerized information systems it utilizes internally and its products 
and customers.

                                      10
<PAGE>

     The Company has completed a preliminary assessment of the Year 2000 
issue with respect to the systems and software internally utilized in its 
business enterprise. The Company is in the process of bringing its 
externally-generated information system software into compliance and 
estimates that such software will be fully Year 2000 compliant by mid-1999.

     While the Company has not yet completed its assessment of the Year 2000 
issue with respect to its products and customers, it has formed a focus team 
responsible for this area.  The focus team is in the process of reviewing 
these issues and contacting the Company's suppliers and certain of the 
Company's customers, to assist them in identifying and resolving Year 2000 
issues.  Because its assessment is not yet completed, the Company has not 
yet determined whether it, its customers or its suppliers have any material 
Year 2000 issues, and if so, the potential effects on the Company's 
operations, results of operations or financial condition.

CAUTIONARY STATEMENT FOR PURPOSES OF FORWARD-LOOKING STATEMENTS

     Certain information contained in this Quarterly Report on Form 10-Q 
(including statements contained in this Part I., Item 2. "Management's 
Discussion and Analysis of Results of Operation and Financial Condition" and 
in Part II, Item 1. "Legal Proceedings"), as well as other written and oral 
statements made or incorporated by reference from time to time by the Company 
and its representatives in other reports, filings with the Securities and 
Exchange Commission, press releases, conferences, or otherwise, may be deemed 
to be forward-looking statements within the meaning of Section 21E of the 
Securities Exchange Act of 1934 and are subject to the "Safe Harbor" 
provisions of that section. This information includes, without limitation, 
statements concerning future revenues, future earnings, future costs, future 
margins and future expenses; anticipated product releases and technological 
advances; the future mix of business and future asset recoveries; contingent 
liabilities; Year 2000 issues; the inherent unpredictability of adversarial 
proceedings; and future demand, future industry conditions and trends, future 
capital expenditures, and future financial condition. These statements are 
based on current expectations and involve a number of risks and 
uncertainties, including those set forth below and elsewhere in this 
Quarterly Report. Although the Company believes that the expectations 
reflected in such forward-looking statements are reasonable, it can give no 
assurance that such expectations will prove to be correct.

     When used in this report, the words "anticipate," "estimate," "expect," 
"may," "project" and similar expressions are intended to be among the 
statements that identify forward-looking statements. Important factors which 
could affect the Company's actual results and cause actual results to differ 
materially from those results which might be projected, forecast, estimated 
or budgeted by the Company in such forward-looking statements include, but 
are not limited to, the following: 

                                      11
<PAGE>

     RISKS RELATED TO PRODUCTS AND TECHNOLOGICAL CHANGE. The markets for 
the Company's product lines are characterized by rapidly changing technology 
and frequent product introductions.  Whether the Company can develop and 
produce successfully, on a timely basis, new and enhanced products that 
embody new technology, meet evolving industry standards and practice, and 
achieve levels of capability and price that are acceptable to its customers, 
will be significant factors in the Company's ability to compete in the 
future. There can be no assurance that the Company will not encounter 
resource constraints or technical or other difficulties that could delay 
introduction of new products in the future. If the Company is unable, for 
technological or other reasons, to develop competitive products in a timely 
manner in response to changes in the seismic data acquisition industry or 
other technological changes, its business and operating results will be 
materially and adversely affected. In addition, the Company's continuing 
development of new products inherently carries the risk of inventory 
obsolescence with respect to its older products.

     While the Company is currently assessing the potential impact of the 
Year 2000 issue, it has not yet completed its review. The problems actually 
encountered by the Company in addressing its Year 2000 issues may be more 
pervasive than anticipated by management, and if so, could have adverse 
effects on the Company's operations, results of operations or financial 
condition. See "--Liquidity and Capital Resources--Year 2000."

     RISKS RELATED TO TIMING OF PRODUCT SHIPMENTS. Due to the relatively high 
sales price of the Company's products and relatively low unit sales volume, 
the timing in the shipment of systems and the mix of products sold can 
produce fluctuations in quarter-to-quarter financial performance. One of the 
factors which may affect the Company's operating results from time to time is 
that a substantial portion of its net sales and other revenues in any period 
may result from shipments during the latter part of a period. Because the 
Company establishes its sales and operating expense levels based on its 
operational goals, if shipments in any period do not meet goals, revenues and 
net profits may be adversely affected. The Company believes that factors 
which could affect such timing in shipments include, among others, 
seasonality of end-user markets, availability of purchaser financing, 
manufacturing lead times, customer purchases of leased equipment and 
shortages of system components. In addition, because the Company typically 
operates, and expects to continue to operate, without a significant backlog 
of orders for its products, the Company's manufacturing plans and expenditure 
levels are based principally on sales forecasts, which sometimes results in 
inventory excesses and imbalances from time to time.

     RISKS RELATED TO GROSS MARGIN.  The Company's gross margin percentage is 
a function of the product mix sold in any period. Other factors, such as unit 
volumes, inventory obsolescence, heightened price competition, changes in 
sales and distribution channels, shortages in components due to timely 
supplies or ability to obtain items at reasonable prices, and availability of 
skilled labor, may also continue to affect the cost of sales and the 
fluctuation of gross margin percentages in future periods.
     
     UNCERTAINTY OF ENERGY INDUSTRY CONDITIONS.  Demand for the Company's 
products is dependent upon the level of worldwide oil and gas exploration and 
development activity. Such activity in turn is primarily dependent upon oil 
and gas prices, which have been subject to wide fluctuation in recent years 
in response to relatively minor changes in the supply and demand for oil and 
natural gas, market uncertainty and a variety of additional factors that are 
beyond the control of the Company. It is impossible to predict future oil and 
natural gas price movements with any certainty. No assurances can be given as 
to the future level of activity in the oil and gas exploration and 
development industry and its relationship to the future demand for the 
Company's products.

     CREDIT RISK FROM SALES ARRANGEMENTS.  The Company sells to many 
customers on extended-term arrangements. Moreover, in connection with certain 
sales of its systems and equipment, the Company has guaranteed certain loans 
from unaffiliated parties to purchasers of such systems and equipment. In 
addition, the Company has sold contracts and leases to third-party financing 
sources, the terms of which often obligate the Company to repurchase the 
contracts and leases in the event of a customer default or upon certain other 
occurrences. Performance of the Company's obligations under these 
arrangements could have a material adverse effect on the Company's financial 
condition. A number of significant payment defaults 

                                      12
<PAGE>

by customers could have a material adverse effect on the Company's financial 
position and results of operations.

     DISRUPTION IN VENDOR SUPPLIES.  The Company's manufacturing process 
requires a high volume of quality components. Certain components used by the 
Company are currently provided by only one vendor. In the future, the Company 
may, from time to time, experience supply or quality control problems with 
its suppliers, and such problems could significantly affect its ability to 
meet production and sales commitments. The Company's reliance on certain 
vendors, as well as industry supply conditions generally, involve several 
risks, including the possibility of a shortage or a lack of availability of 
key components, increases in component costs and reduced control over 
delivery schedules, any of which could adversely affect the Company's future 
financial results.

     RELIANCE ON SIGNIFICANT CUSTOMERS.  A relatively small number of 
customers has accounted for most of the Company's net sales, although the 
degree of sales concentration with any one customer has varied from fiscal 
year to year.  During fiscal 1995, 1996 and 1997 the two largest customers in 
each of those years accounted for 26%, 42% and 45%, respectively, of the 
Company's net sales and other revenues. The loss of any of these customers 
could have a material adverse effect on the Company's sales revenues.
     
     COMPETITION.  The design, manufacture and marketing of seismic data 
acquisition systems is highly competitive and is characterized by continual 
and rapid changes in technology. The Company's principal competitor for land 
seismic equipment is Societe d'Etudes Recherches et Construction 
Electroniques, an affiliate of Compagnie General de Geophysique which, unlike 
the Company, possesses the advantage of being able to sell to an affiliated 
seismic contractor.
     
     Competition in the industry is expected to intensify and could adversely 
affect the Company's future results. Several of the Company's competitors 
have greater name recognition, more extensive engineering, manufacturing and 
marketing capabilities, and greater financial, technological and personnel 
resources than those available to the Company. In addition, certain companies 
in the industry have expanded their product lines or technologies in recent 
years as a result of acquisitions and recent mergers in the oil field 
services industry. There can be no assurance that the Company will be able to 
compete successfully in the future with existing or new competitors. 
Pressures from competitors offering lower-priced products could result in 
future price reductions for the Company's products.

     A continuing trend toward consolidation in the oil field services 
industry may have the effect of adversely affecting the prices and demand for 
the Company's products and services.

     RISK FROM SIGNIFICANT AMOUNT OF FOREIGN SALES.  Sales outside the United 
States have historically accounted for a significant part of the Company's 
net sales and other revenues. Foreign sales are subject to special risks 
inherent in doing business outside of the United States, including the risk 
of war, civil disturbances, embargo and government activities, which may 
disrupt markets and affect operating results. Foreign sales are also 
generally subject to the risks of compliance with additional laws, including 
tariff regulations and import/export restrictions. The Company is, from time 
to time, required to obtain export licenses and there can be no assurance 
that it will not experience difficulty in obtaining such licenses as may be 
required in connection with export sales. 

     Demand for the Company's products from customers in developing countries 
is difficult to predict and can fluctuate significantly from year to year. 
The Company believes that these changes in demand result primarily from the 
instability of economies and governments in certain developing countries, 
changes in internal laws and policies affecting trade and investment, and 
because those markets are only beginning to 

                                      13
<PAGE>

adopt new technologies and establish purchasing practices. These risks may 
adversely affect the Company's future operating results and financial 
position. In addition, sales to customers in developing countries on extended 
terms can present heightened credit risks for the Company, for the reasons 
discussed above.

     PROTECTION OF INTELLECTUAL PROPERTY. The Company believes that 
technology is the primary basis of competition in the industry. Although the 
Company currently holds certain intellectual property rights relating to its 
product lines, there can be no assurance that these rights will not be 
challenged by third parties or that the Company will obtain additional 
patents or other intellectual property rights in the future. Additionally, 
there can be no assurance that the Company's efforts to protect its trade 
secrets will be successful or that others will not independently develop 
products similar to the Company's or design around any of the intellectual 
property rights owned by the Company.
     
     DEPENDENCE ON PERSONNEL.  The Company's success depends upon the 
continued contributions of its personnel, many of whom would be difficult to 
replace. The success of the Company will depend on the ability of the Company 
to attract and retain skilled employees. Changes in personnel, therefore, 
could adversely affect operating results.

     RISKS RELATED TO GOVERNMENT REGULATIONS AND PRODUCT CERTIFICATION. The 
Company's operations are also subject to laws, regulations, government 
policies, and product certification requirements worldwide. Changes in such 
laws, regulations, policies, or requirements could affect the demand for the 
Company's products or result in the need to modify products, which may 
involve substantial costs or delays in sales and could have an adverse effect 
on the Company's future operating results.
     
     RISKS OF STOCK VOLATILITY AND ABSENCE OF DIVIDENDS. In recent years, the 
stock market in general and the market for energy and technology stocks in 
particular, including the Company's common stock, have experienced extreme 
price fluctuations. There is a risk that stock price fluctuation could impact 
the Company's operations. Changes in the price of the Company's common stock 
could affect the Company's ability to successfully attract and retain 
qualified personnel or complete desirable business combinations or other 
transactions in the future. The Company has historically not paid cash 
dividends on its capital stock, and there can be no assurances that the 
Company will do so.

     RISKS RELATED TO ACQUISITIONS.  To implement its business plans, the 
Company has relied in part upon acquisitions and may make further 
acquisitions in the future. Acquisitions require significant financial and 
management resources both at the time of the transaction and during the 
process of integrating the newly acquired business into the Company's 
operations. The Company's operating results could be adversely affected if it 
is unable to successfully integrate such new companies into its operations. 
Certain acquisitions or strategic transactions may be subject to approval by 
the other party's board or shareholders, domestic or foreign governmental 
agencies, or other third parties. Accordingly, there is a risk that important 
acquisitions or transactions could fail to be concluded as planned. Future 
acquisitions by the Company could also result in issuances of equity 
securities or the rights associated with the equity securities, which could 
potentially dilute earnings per share. In addition, future acquisitions could 
result in the incurrence of additional debt, taxes, or contingent 
liabilities, and amortization expenses related to goodwill and other 
intangible assets. These factors could adversely affect the Company's future 
operating results and financial position.

     OIL AND GAS OPERATIONS. The Company's oil and gas operations are subject 
to the economic risks typically associated with exploration, development, and 
production activities, including the necessity of significant expenditures to 
drill exploratory wells. In conducting exploration and development 
activities, the 

                                      14
<PAGE>

Company may drill unsuccessful wells and experience losses and charges to 
earnings and, if oil or natural gas is discovered, there can be no assurance 
that such oil or natural gas can be economically produced or satisfactorily 
marketed. Historically, the markets for oil and natural gas have been 
volatile and are likely to continue to be volatile in the future. The nature 
of the oil and gas business involves certain operating hazards such as well 
blowouts, cratering, explosions, uncontrollable flows of oil, natural gas or 
well fluids, fires, formations with abnormal pressures, pollution, releases 
of toxic gas and other environmental hazards and risks, any of which could 
result in losses to the Company. While the Company's current practice is not 
to act as operator of any drilling prospect, and while the Company does 
maintain insurance in accordance with customary industry practices under the 
circumstances against some, but not all, of such risks and losses, the 
occurrence of such an event not fully covered by insurance could have a 
material adverse affect on the Company's financial position and results of 
operation.

     The foregoing review of factors pursuant to the Private Securities 
Litigation Reform Act of 1995 should not be construed as exhaustive.  In 
addition to the foregoing, the Company wishes to refer readers to the 
Company's other filings and reports with the Securities and Exchange 
Commission, including its recent reports on Forms 10-K and 10-Q, for a 
further discussion of risks and uncertainties which could cause actual 
results to differ materially from those contained in forward-looking 
statements. The Company undertakes no obligation to publicly release the 
result of any revisions to any such forward-looking statements which may be 
made to reflect the events or circumstances after the date hereof or to 
reflect the occurrence of unanticipated events.

     ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

     The Company is not yet required to provide the disclosures required by 
Regulations S-K Item 305 pursuant to General Instruction 1. to Paragraphs 
305(a), 305(b), 305(c), 305(d), and 305(e) of Item 305.

PART II - OTHER INFORMATION.

     ITEM 1.   LEGAL PROCEEDINGS

     On September 24, 1997, a purported class action lawsuit was filed 
against the Company and the former president and chief executive officer, 
and the executive vice president, chief financial officer and secretary 
of the Company, in the U.S. District Court for the Southern District of 
Texas, Houston Division. The action, styled NORMAN TOCK V. INPUT/OUTPUT, 
INC., GARY D. OWENS AND ROBERT P. BRINDLEY, alleges violations of Sections 
10(b) and 20(a) of the Securities Exchange Act of 1934, and state statutory 
and common law fraud provisions. The action was filed on behalf of purchasers 
of common stock of the Company that purchased shares during the period from 
September 17, 1996 through March 18, 1997. The complaint seeks damages in an 
unspecified amount plus costs and attorney's fees. The complaint alleges 
misrepresentations and omissions in public filings and announcements 
concerning the Company's business, sales and products, and disputes certain 
accounting methodologies employed by the Company. On October 21, 1997, a 
stipulation and order was entered by the court, extending the time for 
responses to the complaint by the defendants pending entry of an order 
appointing lead plaintiff and lead counsel. On March 2, 1998 the Court 
entered an order extending the time in which plaintiff may file an amended 
complaint through April 17, 1998. Responses to the amended complaint are due 
on June 8, 1998. The Company believes that the plaintiff's allegations are 
without merit and that there are meritorious defenses to the allegations, and 
intends to defend the action vigorously.

                                      15
<PAGE>

     ITEM 2.   CHANGES IN SECURITIES

     During the fiscal quarter ended February 28, 1998, the Company made no 
sales of its equity securities that were not registered under the Securities 
Act of 1993, as amended, except that on February 2, 1998, the Company issued 
in a privately-negotiated transaction, 320,555 shares of its Common Stock in 
connection with the Company's acquisition of CompuSeis, Inc. ("CompuSeis"). 
The Common Stock was issued as partial consideration for such acquisition to 
the former shareholders of CompuSeis in a statutory merger of CompuSeis with 
and into a wholly-owned subsidiary of the Company. The issuance of the Common 
Stock was effected in a transaction exempt from registration pursuant to the 
provisions of Section 4(2) (Rule 506 under Regulation D) of the Securities 
Act of 1933.

     ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K
          
           (a) List of documents filed as Exhibits.
             
               10.1 - Employment Agreement, effective as of January 1, 1998
                      between the Company and W.J. "Zeke" Zeringue.

               10.2 - Credit Agreement dated as of February 27, 1998 among the
                      Company, certain lenders and Banc One, Texas, N.A. as 
                      agent for the lenders.

               27.1 - Financial Data Schedule (included in EDGAR copy only)
               
           (b) Reports on Form 8-K
          
               No reports on form 8-K were filed by the Company during the
               quarter ended February 28, 1998.   

                                      16
<PAGE>

                                  SIGNATURE


PURSUANT TO THE REQUIREMENTS OF THE SECURITIES EXCHANGE ACT OF 1934, THE 
REGISTRANT HAS DULY CAUSED THIS REPORT TO BE SIGNED ON ITS BEHALF BY THE 
UNDERSIGNED THEREUNTO DULY AUTHORIZED.


                              INPUT/OUTPUT, INC.


                                   By: 
                                       -------------------------------------
                                       Ronald A. Harris
                                       Vice President and Controller
                                       (duly authorized officer and
                                       Chief Accounting Officer)

Dated: March 26, 1998

                                      17

<PAGE>

                                 EMPLOYMENT AGREEMENT

     THIS AGREEMENT is made and entered into by and between INPUT/OUTPUT, INC.
(the "Company"), having a business address at 11104 West Airport Boulevard,
Stafford, Texas 77477-3016, and W. J. Zeringue ("Executive"), having a mailing
address at 7930 State Highway 6, Missouri City, Texas 77459.

     WHEREAS, the Company wishes to employ the Executive and to assure itself of
the services of the Executive for the period provided in this Agreement, and the
Executive wishes to be employed by the Company for such period on the terms and
conditions hereinafter provided.

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
herein contained, the Company and the Executive hereby agree as follows:

     1.   EMPLOYMENT.  Upon the terms and subject to the conditions contained in
this Agreement, the Executive agrees to provide services as provided herein for
the Company during the term of this Agreement.  The Executive agrees to devote
his best efforts to the business of the Company, and shall perform his duties in
a diligent and business-like manner, all for the purpose of advancing the
business of the Company.

     2.   DUTIES.  The duties of the Executive shall be those duties which can
reasonably be expected to be performed by a person with the titles of Chairman
of the Board, President and Chief Executive Officer of Input/Output, Inc.  The
Executive shall report directly to the Board of Directors of the Company.

     3.   EMPLOYMENT TERM.  Subject to the terms and conditions hereof, the
Company agrees to employ the Executive for a term commencing as of January 1,
1998 (the "Effective Date") and continuing until December 31, 1998 (the "Primary
Term"), unless renewed in accordance with this SECTION 3.  Beginning December
31, 1998, this Agreement shall be automatically renewed for successive one-year
terms, unless either the Company or the Executive provides written notice of
election not to renew, at least 60 days before the applicable renewal date.

     4.   SALARY AND BENEFITS.

          (a)  BASE SALARY.  The Company shall, during the Primary Term of this
     Agreement, pay the Executive an annual base salary of $420,000 beginning on
     January 15, 1998.  Such salary shall be paid in bi-monthly installments,
     minus applicable withholding and authorized salary deductions.  The base
     salary may be reviewed and adjusted by the Board of Directors upon any
     renewal of this Agreement under SECTION 3.  The Company may not, however,
     reduce the Executive's base salary at any time during the Primary Term.

<PAGE>

          (b)  SIGN-ON BONUS.  The Company shall pay the Executive a sign-on
     bonus of $200,000, payable on January 2, 1998.  Such amount shall be paid
     in a lump sum, less applicable withholding and authorized salary
     deductions.

          (c)  BONUS.  The Company shall pay the Executive a bonus of $400,000
     on December 31, 1998 in lieu of the Executive's right to participate in the
     Input/Output, Inc. 1996 Management Incentive Plan (the "Incentive Plan")
     for fiscal 1998.  This bonus shall be paid to the Executive irrespective of
     Company performance during 1998, and is contingent only upon the
     Executive's being employed by the Company at December 31, 1998.  The
     Executive will be eligible to participate in the Incentive Plan for awards
     based on the Plan's performance criteria for the Company's fiscal 1999.

          (d)  SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN.  The Company agrees that
     the Board will select the Executive to be a participant in the
     Input/Output, Inc. Supplemental Executive Retirement Plan or any subsequent
     supplement executive retirement plan established by the Company.

          (e)  STOCK OPTIONS.  The Executive shall be granted two stock options
     effective December 10, 1997, to purchase shares of common stock of the
     Company under the Input/Output, Inc. 1990 Stock Option Plan (the "Option
     Plan").  Both option grants will be evidenced by standard stock option
     agreements.  The first grant will provide for an option to purchase 500,000
     shares of stock under the Option Plan, having an exercise price equal to
     the fair market value of the stock on the date of grant.  This option will
     vest in equal annual installments over a four-year period beginning on the
     date of grant.  This option will have a term of ten years and will
     otherwise be subject to the standard terms and conditions of the Option
     Plan; provided, however, that the option agreement shall expressly provide
     that (i) upon the Company's termination of the Executive's employment for
     any reason other than for "Cause" (as defined in SECTION 5(c) of this
     Agreement), (A) all unvested installments of shares under such option shall
     thereupon automatically accelerate and become fully vested, and (B) the
     option shall be exercisable from the date of such termination of employment
     through that date which is the first anniversary date of such date of
     termination, and (ii) upon the occurrence of a "change of control" (as
     defined under the terms of the Option Plan as of the date hereof), all
     unvested installments of shares under such option shall thereupon
     automatically accelerate and become fully vested. 

          The second stock option grant will provide for an option to purchase
     100,000 shares of common stock under the Option Plan.  This grant will be
     100% vested on December 10, 1998, but will be exercisable commencing upon
     that date only if the fair market value per share of the common stock is at
     least equal to 120% of the exercise price (i.e., the New York Stock
     Exchange 

                                      -2-
<PAGE>

     closing price of the common stock on December 10, 1997).  For the
     purpose of determining whether the option becomes exercisable beginning on
     December 10, 1998, "fair market value" will be based on the average closing
     price per share of the common stock on the 30 consecutive trading days
     prior to December 10, 1998.  If such "fair market value" of the stock on
     December 10, 1998 is not equal to at least 120% of the exercise price, then
     this option will terminate.

          (f)  RESTRICTED STOCK.  The Executive shall be granted, effective as
     of January 1, 1998, 53,000 shares of restricted stock under the terms of
     the Input/Output, Inc. 1990 Restricted Stock Plan (the "Restricted Stock
     Plan").  The restrictions on the restricted stock will lapse as to one-half
     of the restricted stock on January 1, 2000, as to an additional one-fourth
     of the restricted stock on January 1, 2001, and as to the remaining 
     one-fourth of the restricted stock on January 1, 2002; provided, however, 
     that the award agreement shall expressly provide that (i) any restrictions 
     on the restricted stock will lapse in full upon the Company's termination
     of the Executive's employment for any reason other than for "Cause" (as
     defined in SECTION 5(c) of this Agreement) and (ii) any restrictions on the
     restricted stock will lapse in full upon the occurrence of a "change of
     control" (as defined under the terms of the Restricted Stock Plan as of the
     date hereof).  The restricted stock will otherwise be subject to the terms
     and conditions under the Restricted Stock Plan. 

          (g)  REIMBURSEMENT OF EXPENSES.  The Company shall reimburse the
     Executive for all out-of-pocket expenses incurred by the Executive in the
     course of his duties, in accordance with normal Company policies.

          (h)  EMPLOYEE BENEFITS.  The Executive shall be entitled to
     participate in all employee benefit programs generally available to
     employees of the Company and to receive all normal perquisites provided to
     senior executive officers of the Company.

          (i)  BENEFITS NOT IN LIEU OF COMPENSATION.  No benefit or perquisite
     provided to the Executive shall be deemed to be in lieu of base salary,
     bonus, or other compensation.

     5.   TERMINATION OF EMPLOYMENT.  The Board of Directors of the Company may
terminate the employment of the Executive at any time as it deems appropriate.

          (a)  TERMINATION WITHOUT CAUSE.  If, during the term of this
     Agreement, the Company terminates the Executive's employment for any reason
     other than for Cause (as defined in SECTION 5(c) of this Agreement), the
     Company shall pay to the Executive an amount (the "Severance Payment")

                                      -3-
<PAGE>

     equal to (i) two (2), multiplied by (ii) the average of the sum of the
     Executive's annual base salary plus annual bonus payments for the three (3)
     most recently completed fiscal years of the Company (or, in the event that
     the Executive has not been employed by the Company for three (3) fiscal
     years of the Company as of the date of his termination of employment with
     the Company, (A) two multiplied by (B) the average of the sum of the
     Executive's annual base salary plus annual bonus payments during the
     Executive's employment with the Company).  For these purposes, the bonus
     relating to any fiscal year shall be used even if that bonus is actually
     paid in a different fiscal year.  The amount of any such Severance Payment
     shall be paid in a lump sum, less applicable withholding, as soon as
     practicable following such termination.

          (b)  TERMINATION UPON A CHANGE OF CONTROL.  If, within one year
     following the date of a "Change of Control" of the Company (as defined
     below), the Company terminates the Executive's employment for any reason
     other than for "Cause" (as defined in SECTION 5(c) of this Agreement) or
     the Executive terminates employment with the Company for "Good Reason" (as
     defined below), the Company shall pay to the Executive an amount (the
     "Change of Control Payment") equal to (A) two (2), multiplied by (B) the
     average of the sum of the Executive's annual base salary plus annual bonus
     payments for the three (3) most recently completed fiscal years of the
     Company (or, in the event that the Executive has not been employed by the
     Company for three (3) fiscal years of the Company as of the date of the
     Change of Control, (X) two, multiplied by (Y) the average of the sum of the
     Executive's annual base salary plus annual bonus payments during the
     Executive's employment with the Company).  For these purposes, the bonus
     relating to any fiscal year shall be used even if that bonus is actually
     paid in a different fiscal year.  The amount of any such Change of Control
     Payment shall be paid in a lump sum, less applicable withholding, as soon
     as practicable following such termination, and shall be paid in lieu of any
     Severance Payment otherwise payable under SECTION 5(a) above.

               (i)  For purposes of this SECTION 5(b), "Good Reason" shall mean:

                    (A)  Without his express written consent, the assignment to
               Executive of any duties inconsistent with his positions, duties,
               responsibilities and status with the Company immediately prior to
               a Change of Control, or a change in his reporting
               responsibilities, titles or offices as in effect immediately
               prior to a Change of Control, or any removal of Executive from or
               any failure to re-elect Executive to any of such positions,
               except in connection with the termination of his employment for
               Cause, death, permanent and total disability (as such term is
               defined in 

                                      -4-
<PAGE>

               Section 22(e)(3) of the Internal Revenue Code of 1986,as 
               amended (the "Code")) or retirement in accordance with normal
               Company policies or by Executive other than for Good Reason;

                    (B)  A reduction by the Company in Executive's base salary
               as in effect on the date of a Change of Control or as the same
               may be increased from time to time thereafter;

                    (C)  The Company's requiring Executive to be based anywhere
               other than either the Company's offices at which he was based
               immediately prior to a Change of Control or the Company's offices
               which are no more than 20 miles from the offices at which the
               Executive was based immediately prior to a Change of Control,
               except for required travel on the Company's business to an extent
               substantially consistent with his business travel obligations
               immediately prior to the Change of Control (excluding, however,
               any travel obligations prior to the Change of Control that are
               associated with or caused by the Change of Control events or
               circumstances), or, in the event Executive consents to any
               relocation beyond such 20-mile radius, the failure by the Company
               to pay (or reimburse Executive) for all reasonable moving
               expenses incurred by him relating to a change of his principal
               residence in connection with such relocation and to indemnify
               Executive against any loss (defined as the difference between the
               actual sale price of such residence and the higher of (1) his
               aggregate investment in such residence or (2) the fair market
               value of such residence as determined by a real estate appraiser
               designated by Executive and reasonably satisfactory to the
               Company) realized on the sale of Executive's principal residence
               in connection with any such change of residence; or

                    (D)  Any failure of the Company to obtain the assumption of,
               or the agreement to perform, this Agreement by any successor as
               contemplated in SECTION 7(a).

          For purposes of this SECTION 5(b)(i), any good faith determination of
          "Good Reason" made by the Executive shall be conclusive and binding on
          the parties.

               (ii) For purposes of this SECTION 5(b), a "Change of Control" of
          the Company  shall mean the occurrence of any of the following events:
          (A) there shall be consummated any merger or consolidation pursuant to
          which shares of the Company's common stock would be converted into
          cash, securities or other property, or any sale, lease, exchange or
          other 

                                      -5-
<PAGE>

          disposition (excluding disposition by way of mortgage, pledge or
          hypothecation), in one transaction or a series of related
          transactions, of all or substantially all of the assets of the Company
          (a "Business Combination"), in each case unless, following such
          Business Combination, the holders of the outstanding common stock
          immediately prior to such Business Combination beneficially own,
          directly or indirectly, more than 51% of the outstanding common stock
          or equivalent equity interests of the corporation or entity resulting
          from such Business Combination (including, without limitation, a
          corporation which as a result of such transaction owns the Company or
          all or substantially all of the Company's assets either directly or
          through one or more subsidiaries) in substantially the same
          proportions as their ownership, immediately prior to such Business
          Combination, of the outstanding common stock of the Company, (B) the
          stockholders of the Company approve any plan or proposal for the
          complete liquidation or dissolution of the Company, (C) any "person"
          (as such term is defined in Section 3(a)(9) or Section 13(d)(3) under
          the Securities Exchange Act of 1934 (the "1934 Act")) or any "group"
          (as such term is used in Rule 13d-5 promulgated under the 1934 Act),
          other than the Company, any successor of the Company or any subsidiary
          or any employee benefit plan of the Company or any subsidiary
          (including such plan's trustee), becomes a beneficial owner for
          purposes of Rule 13d-3 promulgated under the 1934 Act, directly or
          indirectly, of securities of the Company representing 40% or more of
          the Company's then outstanding securities having the right to vote in
          the election of directors, or (D) during any period of two consecutive
          years, individuals who, at the beginning of such period constituted
          the entire Board, cease for any reason (other than death) to
          constitute a majority of the directors, unless the election, or the
          nomination for election by the Company's stockholders, of each new
          director was approved by a vote of at least a majority of the
          directors then still in office who were directors at the beginning of
          the period.

               (iii)  Notwithstanding anything in this Agreement to the
          contrary, the total present value of all change of control payments
          (i.e., "parachute payments," as defined under Section 280G of the
          Code) payable to the Executive or for the Executive's benefit, whether
          payable under this Agreement or any other arrangements with the
          Company, shall be limited to three times the Executive's base amount
          less one dollar and, to the extent necessary, the acceleration of
          vesting and exercisability and the payment of benefits to the
          Executive shall be reduced so that this limit is not exceeded.  The
          terms "base amount" and "present value" will have the meanings
          assigned to them under Section 280G of the Code.  This limit is
          intended to avoid excise taxes which 

                                      -6-
<PAGE>

          may be imposed on the Executive under Section 4999 of the Code 
          and to avoid the disallowance of a deduction to the Company under 
          Section 280G of the Code.

          (c)  TERMINATION FOR CAUSE; TERMINATION BY EXECUTIVE.  If the Company
     shall discharge the Executive for Cause, or if the Executive shall
     terminate his employment with the Company due to death, disability, or any
     other reason, the Executive shall be entitled to receive only the amount of
     base salary accrued by but unpaid to the Executive through the date of such
     termination of employment, and the Company shall have no further obligation
     to make any payment under this Agreement, except as may otherwise be
     provided under the terms of any employee benefit programs in which the
     Executive is then participating. 

           For the purposes of this Agreement, the Company shall have "Cause" to
     terminate the Executive's employment hereunder upon (i) the willful and
     continued failure by the Executive to perform his duties with the Company
     (other than any such failure resulting from incapacity due to physical or
     mental illness), after a demand for substantial performance is delivered to
     the Executive by the Board which specifically identifies the manner in
     which the Board believes that he has not substantially performed his
     duties, or (ii) the willful engaging by the Executive in gross misconduct
     materially and demonstrably injurious to the Company.  For purposes of this
     paragraph, no act, or failure to act, on the Executive's part shall be
     considered "willful" unless done, or omitted to be done, by him not in good
     faith and without reasonable belief that his action or omission was not in
     the best interest of the Company.  Notwithstanding the foregoing, the
     Executive shall not be deemed to have been terminated for Cause unless and
     until there shall have been delivered to him a copy of a resolution duly
     adopted by the affirmative vote of not less than two-thirds (2/3) of the
     entire authorized membership of the Board at a meeting of the Board called
     and held for the purpose (after reasonable notice and an opportunity for
     the Executive, together with counsel, to be heard before the Board),
     finding that in the good faith opinion of the Board he was guilty of
     conduct set forth above in clauses (i) or (ii) of the first sentence of
     this paragraph and specifying the particulars thereof in detail.

          (d)  MITIGATION OF AMOUNTS PAYABLE HEREUNDER.   The Executive shall
     not be required to mitigate the amount of any payment provided for in this
     SECTION 5 by seeking other employment or otherwise, nor shall the amount of
     any payment provided for in this SECTION 5 be reduced by any compensation
     earned by the Executive as the result of employment by another employer
     after the date of termination, or otherwise.

                                      -7-
<PAGE>

     6.   CONFIDENTIALITY AGREEMENT.  As a condition of his employment with the
Company, the Executive shall be required to execute the Company's standard
Invention and Confidentiality Agreement.

     7.   MISCELLANEOUS PROVISIONS.

          (a)  SUCCESSORS OF THE COMPANY.  The Company will require any
     successor (whether direct or indirect, by purchase, merger, consolidation
     or otherwise) to all or substantially all of the business and/or assets of
     the Company, by agreement in form and substance satisfactory to the
     Executive, expressly to assume and agree to perform this Agreement in the
     same manner and to the same extent that the Company would be required to
     perform it if no such succession had taken place.  Failure of the Company
     to obtain such agreement prior to the effectiveness of any such succession
     shall be a breach of this Agreement and shall entitle the Executive to
     compensation from the Company in the same amount and on the same terms as
     the Executive would be entitled hereunder if the Company terminated the
     Executive's employment without Cause, except that for purposes of
     implementing the foregoing, the date on which any such succession becomes
     effective shall be deemed the Date of Termination.  As used in this
     Agreement, "Company" shall mean the Company as hereinbefore defined and any
     successor to its business and/or assets as aforesaid which executes and
     delivers the agreement provided for in this SECTION 7(a) or which otherwise
     becomes bound by all the terms and provisions of this Agreement by
     operation of law.

          (b)  SPECIAL REPRESENTATIONS OF EXECUTIVE.  The Executive may not
     assign his rights or delegate his duties or obligations hereunder without
     the written consent of the Company.  The Executive represents to the
     Company that no previous employer has imposed any contractual restriction
     which would, if enforced, have a material adverse effect on the Company. 
     This Agreement shall inure to the benefit of and be enforceable by the
     Executive's personal or legal representatives, executors, administrators,
     successors, heirs, distributees, devisees and legatees.  If the Executive
     should die while any amounts would still be payable to him hereunder as if
     he had continued to live, all such amounts, unless other provided herein,
     shall be paid in accordance with the terms of this Agreement to his
     designee or, if there be no such designee, to his estate.

          (c)  NOTICE.  For the purposes of this Agreement, notices and all
     other communications provided for in the Agreement shall be in writing and
     shall be deemed to have been duly given when delivered or mailed by United
     States registered or certified mail, return receipt requested, postage
     prepaid, addressed to the respective addresses set forth on the first page
     of this Agreement, provided that all notices to the Company shall be
     directed to the 

                                      -8-
<PAGE>

     attention of the Executive Vice President of the Company with a copy 
     to the Secretary of the Company, or to such other person in writing 
     in accordance herewith, except that notices of change of address
     shall be effective only upon receipt.

          (d)  AMENDMENT; WAIVER.  No provisions of this Agreement may be
     modified, waived or discharged unless such waiver, modification or
     discharge is agreed to in writing signed by the Executive and such officer
     as may be designated by the Board of Directors of the Company.  No waiver
     by either party hereto at any time of any breach by the other party hereto
     of, or compliance with, any condition or provision of this Agreement to be
     performed by such other party shall be deemed a waiver of similar or
     dissimilar provisions or conditions at the same or at any prior or
     subsequent time.  Except as provided in SECTION 6, no agreements or
     representations, oral or otherwise, express or implied, with respect to the
     subject matter hereof have been made by either party which are not set
     forth expressly in this Agreement.

          (e)  INVALID PROVISIONS.  Should any portion of this Agreement be
     adjudged or held to be invalid, unenforceable or void, such holding shall
     not have the effect of invalidating or voiding the remainder of this
     Agreement and the parties hereby agree that the portion so held invalid,
     unenforceable or void shall, if possible, be deemed amended or reduced in
     scope, or otherwise be stricken from this Agreement to the extent required
     for the purposes of validity and enforcement thereof.

          (f)  SURVIVAL OF THE PARTIES' OBLIGATIONS.  The obligations of the
     Company and the Executive under this Agreement shall survive regardless of
     whether the Executive's employment by the Company is terminated,
     voluntarily or involuntarily, by the Company or the Executive, with or
     without Cause or Good Reason.

          (g)  COUNTERPARTS.  This Agreement may be executed in one or more
     counterparts, each of which shall be deemed to be an original but all of
     which together will constitute one and the same instrument.

          (h)  GOVERNING LAW.  This Agreement shall be governed by and construed
     under the laws of the State of Texas.

          (i)  CAPTIONS.  The use of captions and Section headings herein is for
     purposes of convenience only and shall not effect the interpretation or
     substance of any provisions contained herein. 

                                      -9-
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have signed this Agreement on the
10th day of December, 1997, but except as otherwise set forth in this Agreement,
effective as of January 1, 1998.



                              INPUT/OUTPUT, INC.


                              By: /s/ CHARLES E. SELECMAN
                                  --------------------------------------
                              Name: Charles E. Selecman
                              Title: Chairman of the Board, President
                                     and Chief Executive Officer





                              /s/ W. J. ZERINGUE
                                  --------------------------------------
                                  W. J. Zeringue


                                      -10-


<PAGE>

                                   CREDIT AGREEMENT


     This CREDIT AGREEMENT, dated as of February 27, 1998 (this "AGREEMENT"), 
is entered into among INPUT/OUTPUT, INC., a Delaware corporation (the 
"BORROWER"), the financial institutions that are or may from time to time 
become parties hereto (together with their respective successors and assigns, 
the "BANKS") and BANK ONE, TEXAS, N.A., as agent for the Banks.

     In consideration of the premises and the mutual agreements herein 
contained, and for other good and valuable consideration, the receipt and 
sufficiency of which are hereby acknowledged, the parties hereto agree as 
follows:

                                      ARTICLE I.

                                     DEFINITIONS

     Section 1.1    DEFINITIONS. When used herein the following terms shall 
have the following meanings:

        ACQUISITION means any tender offer, merger, purchase or exchange of
   stock, purchase of assets or other similar transaction by the Borrower or any
   of its Subsidiaries with respect to any Person other than the Borrower or a
   Subsidiary of the Borrower.

        AFFECTED BANK means any Bank that has given notice to the Borrower
   (which has not been rescinded) of (i) any obligation by the Borrower to pay
   any amount pursuant to SECTION 7.6 or 8.1 or (ii) the occurrence of any
   circumstances of the nature described in SECTION 8.2 or 8.3.

        AFFILIATE of any Person means any other Person which, directly or
   indirectly, controls or is controlled by or is under common control with such
   Person, including, (i) any Person which beneficially owns or holds ten
   percent or more of any class of voting stock of such Person or ten percent of
   more of the equity interest in such Person, (ii) any Person of which such
   Person beneficially owns or holds ten percent or more of any class of voting
   shares or in which such Person beneficially owns or holds ten percent or more
   of the equity interests in such Person, and (iii) any officer or director of
   such Person.

        AGENT means Bank One in its capacity as agent for the Banks hereunder
   and any successor thereto in such capacity.

        AGENT-RELATED PERSONS means Bank One and any successor agent arising
   under SECTION 13.9, together with their 

<PAGE>

   respective Affiliates and the officers, directors, employees, agents and 
   attorneys-in-fact of such Persons and Affiliates.

        AGREEMENT - see the first paragraph hereof.

        ASSIGNMENT AGREEMENT - see SECTION 14.9.1.

        BANK - see the first paragraph hereof.

        BANK ONE means Bank One, Texas, N.A. in its individual capacity.

        BORROWER - see the first paragraph hereof.

        BUSINESS DAY means any day on which Bank One is open for commercial
   banking business in Houston, Texas and, in the case of a Business Day which
   relates to a Eurodollar Loan, on which dealings are carried on in the
   interbank eurodollar market.

        CALCULATION PERIOD means the period for which any calculation under this
   Agreement is being made.

        CAPITAL EXPENDITURES means all expenditures for assets which, in
   accordance with GAAP, are properly classified as equipment, real property,
   improvements, fixed assets or a similar type of capitalized asset and which
   would be required to be capitalized and shown on the consolidated balance
   sheet of the Borrower; provided, however, Capital Expenditures shall not
   include expenditures in connection with Acquisitions.

        CAPITAL LEASE means, with respect to any Person, any lease of (or other
   agreement conveying the right to use) any real or personal property by such
   Person that, in conformity with GAAP, is accounted for as a capital lease on
   the balance sheet of such Person.  

        CASH EQUIVALENT INVESTMENT means, at any time, (a) any evidence of Debt,
   maturing not more than one year after such time, issued or guaranteed by the
   United States Government or any agency thereof, (b) commercial paper,
   maturing not more than one year from the date of issue, corporate demand
   notes or other debt securities having a maturity or tender right less than
   one year from the date of issuance thereof, in each case (unless issued by a
   Bank or its holding company) rated in one of the two highest rating
   categories by Standard & Poor's Ratings Group or Moody's Investors Service,
   Inc., (c) any certificate of deposit (or time deposits represented by such
   certificates of deposit) or bankers acceptance, maturing not more than one
   year after such time, or overnight Federal Funds transactions that are issued
   or sold by a commercial banking institution that is a member of the Federal
   Reserve System and has a combined capital and surplus and undivided profits
   of 

                                       -2-

<PAGE>

   not less than $500,000,000, (d) any repurchase agreement entered into with
   any Bank (or other commercial banking institution of the stature referred to
   in CLAUSE (c)) which (i) is secured by a fully perfected security interest in
   any obligation of the type described in any of CLAUSES (a) through (c) and
   (ii) has a market value at the time such repurchase agreement is entered into
   of not less than 100% of the repurchase obligation of such Bank (or other
   commercial banking institution) thereunder and (e) investments in short-term
   asset management accounts offered by any Bank for the purpose of investing in
   loans to any corporation (other than the Borrower or an Affiliate of the
   Borrower), state or municipality, in each case organized under the laws of
   any state of the United States or of the District of Columbia.

        CERCLA - See SECTION 9.15.

        CODE means the Internal Revenue Code of 1986, as amended.

        COLLATERAL DOCUMENTS means the Pledge Agreements-Borrower, the Pledge
   Agreements-Subsidiary and any other agreement pursuant to which the Borrower
   or any Subsidiary grants a Lien or security interest in collateral to the
   Agent for the benefit of the Banks.

        COMMITMENT AMOUNT - see SECTION 2.1.1.

        COMMITMENTS means the Loan Commitment and the L/C Commitment.

        COMPLIANCE CERTIFICATE means a certificate in substantially the form of
   EXHIBIT E.  

        COMPUTATION PERIOD means each period of four consecutive Fiscal Quarters
   ending on the last day of a Fiscal Quarter.

        CONTINGENT LIABILITIES mean, with respect to Borrower or any Subsidiary,
   those direct or indirect liabilities of such Person with respect to any Debt,
   lease, dividend, letter of credit or other obligation (the "PRIMARY
   OBLIGATIONS") of another Person (the "PRIMARY OBLIGOR"), including, without
   limitation, any obligation of such Person, whether or not contingent, (a) to
   purchase, repurchase or otherwise acquire such primary obligations or any
   property constituting direct or indirect security therefor, (b) to advance or
   provide funds (i) for the payment or discharge of any such primary
   obligation, (ii) to maintain working capital or equity capital of the primary
   obligor or otherwise to maintain the net worth or solvency or any balance
   sheet item, level of income or financial condition of the primary obligor,
   (c) to purchase property, securities or services primarily for the purpose of
   assuring the owner of any such primary obligation of the 

                                       -3-

<PAGE>

   ability of the primary obligor to make payment of such primary obligation, or
   (d) otherwise to assure or hold harmless the owner of any such primary 
   obligation against loss in respect thereof.  The amount of any Contingent 
   Liabilities shall be deemed to be an amount equal to the stated or 
   determinable amount of the primary obligation in respect of which such 
   Contingent Liabilities are made or, if not stated or determinable, the 
   maximum reasonably anticipated liability in respect thereof as determined by 
   the Borrower in good faith.

        CONTROLLED GROUP means all members of a controlled group of corporations
   and all members of a controlled group of trades or businesses (whether or not
   incorporated) under common control which, together with the Borrower, are
   treated as a single employer under Section 414 of the Code or Section 4001 of
   ERISA.

        CURRENT ASSETS means, at any particular time, all amounts which, in
   conformity with GAAP, would be included as current assets on a consolidated
   balance sheet of Borrower and its Subsidiaries.

        CURRENT LIABILITIES means, at any particular time, all amounts which, in
   conformity with GAAP, would be included as current liabilities on a
   consolidated balance sheet of Borrower and its Subsidiaries.

        CURRENT MATURITIES OF LONG TERM DEBT means for Borrower and its
   Subsidiaries on a consolidated basis, the principal amount due and payable
   during the next succeeding twelve month period on Funded Debt of Borrower and
   its Subsidiaries which has a final maturity more than twelve months from the
   date of calculation.

        CURRENT RATIO means the ratio of Current Assets to Current Liabilities.

        DEBT of any Person means, without duplication, (a) all indebtedness of
   such Person for borrowed money, whether or not evidenced by bonds,
   debentures, notes or similar instruments, (b) all obligations of such Person
   as lessee under Capital Leases which have been or should be recorded as
   liabilities on a balance sheet of such Person, (c) all obligations of such
   Person to pay the deferred purchase price of property or services (but
   excluding trade accounts payable or trade notes in the ordinary course of
   business that are not past due by more than 90 days), (d) all indebtedness
   secured by a Lien on the property of such Person (other than Liens for taxes
   and assessments that are not delinquent) whether or not such indebtedness
   shall have been assumed by such Person (it being understood that if such
   Person has not assumed or otherwise become personally liable for any such
   indebtedness, the amount 

                                       -4-

<PAGE>

   of the Debt of such Person in connection therewith shall be limited to the 
   lesser of the face amount of such indebtedness or the fair market value of 
   all property of such Person securing such indebtedness), (e) all obligations,
   contingent or otherwise, with respect to the face amount of all letters of 
   credit (whether or not drawn) and banker's acceptances issued for the account
   of such Person (including the Letters of Credit), and (f) net liabilities of 
   such Person under all Hedging Obligations.

        DISPOSAL - see the definition of "RELEASE".

        DOLLAR and the sign "$" mean lawful money of the United States of
   America.

        "EBITDA" means for Borrower and its Subsidiaries, on a consolidated
   basis, for any period, the sum of (a) Net Income, plus (b) taxes, plus (c)
   depreciation and amortization, plus (d) Interest Expense; provided that for
   purposes of calculating EBITDA of the Borrower and its Subsidiaries for any
   period, the consolidated net income of any Person acquired by the Borrower or
   any Subsidiary during such period (plus, to the extent deducted in
   determining such consolidated net income, interest expense, income tax
   expense, depreciation and amortization of such Person) shall be included on
   a PRO FORMA basis for such period (assuming the consummation of each such
   acquisition and the incurrence or assumption of any Debt in connection
   therewith occurred on the first day of such period) if the audited
   consolidated balance sheet of such acquired Person and its consolidated
   Subsidiaries as at the end of the period preceding the acquisition of such
   Person and the related audited consolidated statements of income,
   stockholders' equity and cash flows for the period in respect of which EBITDA
   is to be calculated (i) have been previously provided to the Agent and the
   Banks and (ii) have been found acceptable by the Required Banks.

        EFFECTIVE DATE  - see SECTION 11.1.

        ENVIRONMENTAL CLAIMS means all claims, however asserted, by any
   governmental, regulatory or judicial authority or other Person alleging
   potential liability or responsibility for violation of any Environmental Law,
   or for release or injury to the environment.

        ENVIRONMENTAL LAWS means all federal, state or local laws, statutes,
   common law duties, rules, regulations, ordinances and codes, together with
   all administrative orders, directed duties, requests, licenses,
   authorizations and permits of, and agreements with, any governmental
   authority, in each case relating to environmental matters.

                                       -5-

<PAGE>

        ERISA means the Employee Retirement Income Security Act of 1974. 
   References to sections of ERISA also refer to any successor sections.

        EUROCURRENCY RESERVE PERCENTAGE means, with respect to any Eurodollar
   Loan for any Interest Period, a percentage (expressed as a decimal) equal to
   the daily average during such Interest Period of the percentage in effect on
   each day of such Interest Period, as prescribed by the Board of Governors of
   the Federal Reserve System (or any successor), for determining the aggregate
   maximum reserve requirements applicable to "Eurocurrency Liabilities"
   pursuant to Regulation D or any other then applicable regulation of such
   Board of Governors which prescribes reserve requirements applicable to
   "Eurocurrency Liabilities" as presently defined in Regulation D.

        EURODOLLAR LOAN means any Loan which bears interest at a rate determined
   by reference to the Eurodollar Rate (Reserve Adjusted).

        EURODOLLAR MARGIN - see SCHEDULE 1.1.A.

        EURODOLLAR OFFICE means with respect to any Bank the office or offices
   of such Bank which shall be making or maintaining the Eurodollar Loans of
   such Bank hereunder or such other office or offices through which such Bank
   determines its Eurodollar Rate.  A Eurodollar Office of any Bank may be, at
   the option of such Bank, either a domestic or foreign office.

        EURODOLLAR RATE means, with respect to each Interest Period, the rate of
   interest per annum at which deposits in Dollars are offered by the major
   London clearing banks, as reported on Telerate System reports (Page 3807) (or
   such other similar news reporting service as the Agent may subscribe to at
   the time such Eurodollar Rate is determined), in the London interbank
   Eurodollar market for a period of time equal or comparable to such Interest
   Period and in an amount equal or comparable to the principal amount of the
   Eurodollar Loan to which such Interest Period relates.  The Eurodollar Rate
   for the Interest Period to which it relates shall (a) be determined as of
   11:00 a.m. (London, England time) two (2) Business Days prior to the first
   day of such Interest Period, or at such earlier time as determined by the
   Agent, and (b) shall be rounded upward, if necessary, to the nearest one-one
   hundredth of one percent.

        EURODOLLAR RATE (RESERVE ADJUSTED) means, with respect to any Eurodollar
   Loan for any Interest Period, a rate per annum (rounded upwards, if
   necessary, to the nearest 1/100 of 1%) determined pursuant to the following
   formula:

                                       -6-

<PAGE>

          Eurodollar Rate     =    EURODOLLAR RATE
          (Reserve Adjusted)       1-Eurocurrency
                                  Reserve Percentage

        EVENT OF DEFAULT means any of the events described in SECTION 12.1.

        FISCAL QUARTER means a fiscal quarter of a Fiscal Year.

        FISCAL YEAR means the fiscal year of the Borrower and its Subsidiaries,
   which period shall be the 12-month period ending on May 31 of each year. 
   References to a Fiscal Year with a number corresponding to any calendar year
   (e.g., "Fiscal Year 1998") refer to the Fiscal Year ending on May 31 of such
   calendar year.

        FIXED CHARGE COVERAGE RATIO means, for any Calculation Period (a) EBITDA
   for such Calculation Period, minus (b) taxes paid in cash by the Borrower and
   its Subsidiaries during such Calculation Period, minus (c) dividends paid in
   cash by Borrower to its shareholders during such Calculation Period, plus (d)
   R&D Expense incurred by Borrower and its Subsidiaries during such Calculation
   Period, divided by the sum of (v) that amount which is equal to one fifth
   (1/5) of the daily average sum during such Computation Period of (i) the
   outstanding principal amount of the Loans plus (ii) the aggregate undrawn
   amount of all outstanding Letters of Credit, plus (w) Current Maturities of
   Long Term Debt as of the date of calculation, plus (x) Interest Expense
   incurred by Borrower and its Subsidiaries during such Calculation Period,
   plus (y) Maintenance Capital Expenditures incurred by Borrower and its
   Subsidiaries during such Calculation Period, plus (z) R&D Expense incurred by
   Borrower and its Subsidiaries during such Calculation Period. 

        FORM 10-Q means Form 10-Q used for quarterly reports under Section 13 or
   15(d) of the Securities Exchange Act of 1934, filed pursuant to Rule 13a-13
   or Rule 15d-13 of the Securities Exchange Act of 1934.

        FUNDED DEBT means, at any time, the current portion of scheduled
   payments of long-term Debt of Borrower and its Subsidiaries (determined on a
   consolidated basis), plus the long-term Debt of Borrower and its Subsidiaries
   (determined on a consolidated basis), plus the short term Debt of Borrower
   and its Subsidiaries (determined on a consolidated basis).

        FUNDED DEBT TO CAPITALIZATION RATIO - COVENANT means, at any time, the
   sum of Funded Debt plus Contingent Liabilities divided by the sum of Funded
   Debt plus Tangible Net Worth.

                                       -7-

<PAGE>

        FUNDED DEBT TO CAPITALIZATION RATIO - PRICING means, at any time, Funded
   Debt divided by the sum of Funded Debt plus Tangible Net Worth.

        GAAP means generally accepted accounting principles set forth from time
   to time in the opinions and pronouncements of the Accounting Principles Board
   and the American Institute of Certified Public Accountants and statements and
   pronouncements of the Financial Accounting Standards Board (or agencies with
   similar functions of comparable stature and authority within the U.S.
   accounting profession), which are applicable to the circumstances as of the
   date of determination.

        GROUP - see SECTION 2.2.1.

        GUARANTOR means, on any day, each Material Subsidiary, unless the
   Required Banks have determined that such Material Subsidiary is not to be a
   Guarantor.  The Guarantors as of the Effective Date are listed on Schedule
   1.1.B. 

        GUARANTY means a guaranty substantially in the form of EXHIBIT C.

        HAZARDOUS SUBSTANCES - see SECTION 9.15.

        HEDGING OBLIGATIONS means, with respect to any Person, all liabilities
   of such Person under interest rate, currency and commodity swap agreements,
   cap agreements and collar agreements, and all other agreements or
   arrangements designed to protect such Person against fluctuations in interest
   rates, currency exchange rates or commodity prices.

        INTEREST EXPENSE means for any period the consolidated interest expense
   of the Borrower and its Subsidiaries for such period (including all imputed
   interest on Capital Leases and before giving effect to any capitalization of
   interest but excluding amortization of deferred financing costs).

        INTEREST PERIOD - see SECTION 4.3.

        INVESTMENT means, relative to any Person, (a) any loan or advance made
   by such Person to any other Person (excluding any commission, travel or
   similar advances made to directors, officers and employees of the Borrower or
   any of its Subsidiaries), (b) any ownership or similar interest held by such
   Person in any other Person and (c) deposits and the like relating to
   prospective acquisitions of businesses.

        ISSUING BANK means Bank One in its capacity as an issuer of Letters of
   Credit hereunder and any other Bank which, with the written consent of the
   Borrower and the Agent, is the issuer of one or more Letters of Credit
   hereunder.

                                       -8-

<PAGE>

        L/C APPLICATION means, with respect to any request for the issuance of
   a Letter of Credit, a letter of credit application in the form being used by
   the applicable Issuing Bank at the time of such request for the type of
   letter of credit requested.

        L/C COMMITMENT means the commitment of the Issuing Bank to issue, and of
   each Bank to participate in, Letters of Credit pursuant to SECTION 2.1.2.

        LETTER OF CREDIT - see SECTION 2.1.2.

        LIEN means, with respect to any Person, any interest granted by such
   Person in any real or personal property, asset or other right owned or being
   purchased or acquired by such Person which secures payment or performance of
   any obligation and shall include any security interest, mortgage, lien,
   encumbrance, charge or other security interest of any kind, whether arising
   by contract, as a matter of law, by judicial process or otherwise.

        LOAN COMMITMENT means the commitment of the Banks to make Loans pursuant
   to SECTION 2.1.1.

        LOAN DOCUMENTS means this Agreement, the Notes, the L/C Applications,
   the Guaranties, the Collateral Documents and all other documents and
   instruments executed by Borrower in connection with this Agreement.

        LOANS - see SECTION 2.1.1.

        MAINTENANCE CAPITAL EXPENDITURES  means Capital Expenditures incurred by
   the Borrower or its Subsidiaries in connection with the replacement or
   maintenance of equipment or other fixed assets of the Borrower or its
   Subsidiaries.

        MARGIN STOCK means any "margin stock" as defined in Regulation U of the
   Board of Governors of the Federal Reserve System.

        MATERIAL ADVERSE EFFECT means (a) a material adverse change in, or a
   material adverse effect upon, the financial condition, operations, assets,
   business or properties of the Borrower and its Subsidiaries taken as a whole,
   or (b) a material adverse effect upon any substantial portion of the
   collateral under the Collateral Documents or upon the legality, validity,
   binding effect or enforceability against the Borrower or any Guarantor of any
   Loan Document.

        "MATERIAL SUBSIDIARY" means, (a) with respect to Subsidiaries existing
   on the Effective Date, those Subsidiaries listed on Schedule 1.1.B. and (b)
   with respect to 

                                       -9-

<PAGE>

   Subsidiaries created or acquired by the Borrower after the Effective Date, 
   all such Subsidiaries, unless the Borrower and the Required Banks shall 
   mutually determine (which determination shall be made in good faith based 
   upon the relative net worth of such Subsidiary) that any such Subsidiary is 
   not a Material Subsidiary.

        "MAXIMUM RATE" means, with respect to any Bank and the holder of any
   Note, the maximum nonusurious interest rate, if any, that at any time, or
   from time to time, may be contracted for, taken, reserved, charged or
   received on the indebtedness created under this Agreement, the Notes or any
   other Loan Document under the laws which are presently in effect in the
   United States and the State of Texas applicable to the Banks, such holders
   and such indebtedness or, to the extent permitted by law, under such
   applicable laws of the United States and the State of Texas which may
   hereafter be in effect and which allow a higher maximum nonusurious interest
   rate than applicable laws now allow.  To the extent that Chapter 303 of the
   Texas Finance Code (the "Code"), is relevant to any Bank or any holder of any
   Note for the purposes of determining the Maximum Rate, each such Person shall
   determine such applicable legal rate under the Code pursuant to the "weekly
   ceiling," from time to time in effect, as referred to and defined in Chapter
   303 of the Code; subject, however, to the limitations on such applicable
   ceiling referred to and defined in Chapter 303 of the Code, and further
   subject to any right such Person may have subsequently, under applicable law,
   to change the method of determining the Maximum Rate.  If no Maximum Rate is
   established by applicable law, then the Maximum Rate shall be equal to
   eighteen percent (18%).

        MULTIEMPLOYER PENSION PLAN means a multiemployer plan, as such term is
   defined in Section 4001(a) (3) of ERISA, and to which the Borrower or any
   member of the Controlled Group may have any liability.

        NET INCOME means, with respect to the Borrower and its Subsidiaries for
   any period, the consolidated net income (or loss) of the Borrower and its
   Subsidiaries for such period, excluding any extraordinary gains during such
   period.

        NOTE - see SECTION 3.1.

        OPERATING LEASE means any lease of (or other agreement conveying the
   right to use) any real or personal property by the Borrower or any
   Subsidiary, as lessee, other than any Capital Lease.

        PBGC means the Pension Benefit Guaranty Corporation and any entity
   succeeding to any or all of its functions under ERISA.

                                       -10-

<PAGE>

        PLEDGE AGREEMENT-BORROWER means a Security Agreement-Pledge executed by
   Borrower and the Agent, substantially in the form of EXHIBIT B-1, as the same
   may be amended, modified or supplemented.

        PLEDGE AGREEMENT-SUBSIDIARY means a Security Agreement-Pledge executed
   by a Subsidiary and the Agent, substantially in the form of EXHIBIT B-2, as
   the same may be amended, modified or supplemented.

        PENSION PLAN means a "pension plan", as such term is defined in Section
   3(2) of ERISA, which is subject to Title IV of ERISA (other than a
   Multiemployer Pension Plan), and to which the Borrower or any member of the
   Controlled Group may have any liability, including any liability by reason of
   having been a substantial employer within the meaning of Section 4063 of
   ERISA at any time during the preceding five years, or by reason of being
   deemed to be a contributing sponsor under Section 4069 of ERISA.

          PERCENTAGE means, with respect to any Bank, the percentage specified
   opposite such Bank's name on SCHEDULE 2.1 hereto, reduced (or increased) by
   subsequent assignments pursuant to SECTION 14.9.1.

        PERSON means any natural person, corporation, partnership, trust,
   limited liability company, association, governmental authority or unit, or
   any other entity, whether acting in an individual, fiduciary or other
   capacity.

        "PRIME RATE" means, at any time, the rate of interest per annum then
   most recently published in The Wall Street Journal (or any successor
   publication if The Wall Street Journal is no longer published) in the "Money
   Rates" section (or such successor section) as the "Prime Rate."  If a range
   of prime interest rates per annum is so published, "Prime Rate" shall mean
   the highest rate per annum in such published range.  If the definition of
   "Prime Rate" is no longer published in The Wall Street Journal (or any
   successor publication), "Prime Rate" shall mean, at any time, the rate of
   interest per annum then most recently established by the Agent as its prime
   rate or equivalent base rate.

        PRIME RATE LOAN means any Loan which bears interest at or by reference
   to the Prime Rate.

        PRIME RATE MARGIN - see SCHEDULE 1.1.A.

        R&D EXPENSE  means expenditures incurred by the Borrower and its
   Subsidiaries, on a consolidated basis, attributable to research and product
   development and recorded as such in accordance with GAAP.

                                       -11-

<PAGE>

        REGULATION S-X means Regulation S-X as promulgated by the Securities
   Exchange Commission in connection with the Securities Exchange Act of 1934.

        RELEASE has the meaning specified in CERLA and the term "DISPOSAL" (or
   "DISPOSED") has the meaning specified in RCRA; PROVIDED that in the event
   either CERLA or RCRA is amended so as to broaden the meaning of any term
   defined thereby, such broader meaning shall apply as of the effective date of
   such amendment; and PROVIDED, FURTHER, that to the extent that the laws of a
   state wherein any affected property lies establish a meaning for "RELEASE" or
   "DISPOSAL" which is broader than is specified in either CERLA or RCRA, such
   broader meaning shall apply.

        RCRA - see SECTION 9.15.

        REQUIRED BANKS means Banks having Percentages aggregating 80% or more.

        SEC means the Securities and Exchange Commission.

        STATED AMOUNT means, with respect to any Letter of Credit at any date of
   determination, the maximum aggregate amount available for drawing thereunder
   at any time during the then ensuing term of such Letter of Credit under any
   and all circumstances, plus the aggregate amount of all unreimbursed payments
   and disbursements under such Letter of Credit.

        SUBSIDIARY means, with respect to any Person, a corporation of which
   such Person and/or its other Subsidiaries own, directly or indirectly, such
   number of outstanding shares as have more than 50% of the ordinary voting
   power for the election of directors.  Unless the context otherwise requires,
   each reference to Subsidiaries herein shall be a reference to Subsidiaries of
   the Borrower.

          TANGIBLE NET WORTH means, at any particular time, all amounts which, 
   in conformity with GAAP, would be included as stockholders' equity on a
   consolidated balance sheet of Borrower and its Subsidiaries (including
   preferred stock accounts); provided, however, there shall be excluded
   therefrom (a) any amount at which shares of capital stock of Borrower or any
   Subsidiary appear as an asset on Borrower's or any Subsidiary's balance
   sheet, (b) goodwill, including any amounts, however designated, that
   represent the excess of the purchase price paid for assets or stock over the
   value assigned thereto, (c) patents, trademarks, trade names, and copyrights,
   (d) deferred expenses, (e) loans and advances to any stockholder, director,
   officer, or employee of Borrower or any Subsidiary or any affiliate, and (f)
   all other assets which are properly classified as intangible assets.

                                       -12-

<PAGE>

        TERMINATION DATE means the earlier to occur of (a) February 27, 2001, or
   such later date to which the Termination Date may be extended at the request
   of the Borrower and with the consent of each Bank or (b) such other date on
   which the Commitments shall terminate pursuant to ARTICLE VI or XII.

        TYPE OF LOAN OR BORROWING - see SECTION 2.2.1. The types of Loans or
   borrowings under this Agreement are Prime Rate Loans or borrowings and
   Eurodollar Loans or borrowings.

        UNMATURED EVENT OF DEFAULT means any event that, if it continues
   uncured, will, with passage of time or notice or both, constitute an Event of
   Default.

        WELFARE PLAN means a "welfare plan", as such term is defined in Section
   3(1) of ERISA.

   Section 1.2    OTHER INTERPRETIVE PROVISIONS.  (a)  The meanings of 
defined terms are equally applicable to the singular and plural forms of the 
defined terms.

     (b)  SECTION, SCHEDULE and EXHIBIT references are to this Agreement 
unless otherwise specified.

     (c)  (i) The term "including" is not limiting and means "including 
without limitation."

     (ii) In the computation of periods of time from a specified date to a 
later specified date, the word "from" means "from and including"; the words 
"to" and "until" each mean "to but excluding", and the word "through" means 
"to and including."

     (d)  Unless otherwise expressly provided herein, (i) references to 
agreements (including this Agreement) and other contractual instruments shall 
be deemed to include all subsequent amendments and other modifications 
thereto, but only to the extent such amendments and other modifications are 
not prohibited by the terms of any Loan Document, and (ii) references to any 
statute or regulation are to be construed as including all statutory and 
regulatory provisions consolidating, amending, replacing, supplementing or 
interpreting such statute or regulation.

     (e)  This Agreement and the other Loan Documents may use several 
different limitations, tests or measurements to regulate the same or similar 
matters.  All such limitations, tests and measurements are cumulative and 
shall each be performed in accordance with their terms.

     (f)  This Agreement and the other Loan Documents are the result of 
negotiations among and have been reviewed by counsel to the Agent, the 
Borrower, the Banks and the other parties thereto and are the products of all 
parties. Accordingly, they shall not 

                                       -13-

<PAGE>

be construed against the Agent or the Banks merely because of the Agent's or 
Banks' involvement in their preparation.

                                     ARTICLE II.

                     COMMITMENTS OF THE BANKS; LETTER OF CREDIT,
                         BORROWING AND CONVERSION PROCEDURES

   Section 2.1    COMMITMENTS.  On and subject to the terms and conditions 
of this Agreement, each of the Banks, severally and for itself alone, agrees 
to make loans to, and to issue or participate in the issuance of letters of 
credit for the account of, the Borrower as follows:

        2.1.1     LOAN COMMITMENT.  Each Bank will make loans on a revolving
   basis ("LOANS") from time to time before the Termination Date in such Bank's
   Percentage of such aggregate amounts as the Borrower may from time to time
   request from all Banks; PROVIDED that the aggregate principal amount of all
   Loans which all Banks shall be committed to have outstanding at any one time
   shall not exceed (a) $50,000,000, as such amount may be reduced from time to
   time pursuant to SECTION 6.1 (as so reduced, the "COMMITMENT AMOUNT"), minus
   (b) the Stated Amount of all outstanding Letters of Credit.

        2.1.2     L/C COMMITMENT.  (a) The Issuing Banks will issue standby
   letters of credit, in each case containing such terms and conditions as are
   permitted by this Agreement and are reasonably satisfactory to the applicable
   Issuing Bank (each, a "LETTER OF CREDIT"), at the request of and for the
   account of the Borrower or any Subsidiary from time to time before the
   Termination Date and (b) as more fully set forth in SECTION 2.3.5, each Bank
   agrees to purchase a participation in each such Letter of Credit; PROVIDED
   that the aggregate Stated Amount of all Letters of Credit shall not at any
   time exceed the lesser of (i) $15,000,000 or (ii) the Commitment Amount minus
   the aggregate principal amount of all outstanding Loans.

   Section 2.2    LOAN PROCEDURES.

        2.2.1     VARIOUS TYPES OF LOANS.  Each Loan shall be either a Prime
   Rate Loan or a Eurodollar Loan (each a "TYPE" of Loan), as the Borrower shall
   specify in the related notice of borrowing or conversion pursuant to SECTION
   2.2.2 or 2.2.3.  Eurodollar Loans having the same Interest Period are
   sometimes called a "GROUP" or collectively "GROUPS".  Prime Rate Loans and
   Eurodollar Loans may be outstanding at the same time, PROVIDED that (i) not
   more than eight different Groups of Loans shall be outstanding at any one
   time and (ii) the aggregate principal amount of each Group of Eurodollar
   Loans shall at all times be at least $1,000,000 and an integral 

                                       -14-

<PAGE>

   multiple of $250,000.  All borrowings, conversions and repayments of Loans 
   shall be effected so that each Bank will have a pro rata share (according to 
   its Percentage) of all types and Groups of Loans.

        2.2.2     BORROWING PROCEDURES.  The Borrower shall give written notice
   or telephonic notice (followed immediately by written confirmation thereof)
   to the Agent of each proposed borrowing not later than (a) in the case of a
   Prime Rate borrowing, 12:00 P.M., Houston, Texas time, at least one Business
   Day prior to the proposed date of such borrowing, and (b) in the case of a
   Eurodollar borrowing, 10:00 A.M., Houston, Texas time, at least three
   Business Days prior to the proposed date of such borrowing.  Each such notice
   shall be effective upon receipt by the Agent, shall be irrevocable, and shall
   specify the date, amount and type of borrowing and, in the case of a
   Eurodollar borrowing, the initial Interest Period therefor.  Promptly upon
   receipt of such notice, the Agent shall advise each Bank thereof.  Each
   written or telephonic notice shall constitute a representation by Borrower
   that the statements contained in SECTION 11.2.1 are true and correct as of
   the date of such notice.  Not later than 1:00 P.M., Houston, Texas time, on
   the date of a proposed borrowing, each Bank shall provide the Agent at the
   office specified by the Agent with immediately available funds covering such
   Bank's Percentage of such borrowing and, so long as the Agent has not
   received written notice that the conditions precedent set forth in ARTICLE XI
   with respect to such borrowing have not been satisfied (and does not have
   knowledge of any default in the payment of any principal, interest or fees to
   be paid to the Agent for the account of the Banks), the Agent shall pay over
   the requested amount to the Borrower on the requested borrowing date.  Each
   borrowing shall be on a Business Day.  Each borrowing shall be in an
   aggregate amount of at least $1,000,000 and an integral multiple of $250,000.
     

        2.2.3     PROCEDURES FOR CONVERSION OF TYPE OF LOAN.  Subject to the
   provisions of SECTION 2.2.1, the Borrower may convert all or any part of any
   outstanding Loan into a Loan of a different type by giving written notice or
   telephonic notice (followed immediately by written confirmation thereof) to
   the Agent not later than (a) in the case of conversion into a Prime Rate
   Loan, 12:00 P.M., Houston, Texas time, at least one Business Day prior to the
   proposed date of such conversion, and (b) in the case of a conversion into a
   Eurodollar Loan, 10:00 A.M., Houston, Texas time, at least three Business
   Days prior to the proposed date of such conversion.  Each such notice shall
   be effective upon receipt by the Agent, shall be irrevocable, and shall
   specify the date and amount of such conversion, the Loan to be so converted,
   the type of Loan to be converted into and, in the case of a conversion into a

                                       -15-

<PAGE>

   Eurodollar Loan, the initial Interest Period therefor.  Promptly upon
   receipt of such notice, the Agent shall advise each Bank thereof.  Subject to
   SECTION 2.5, such Loan shall be so converted on the requested date of
   conversion.  Each conversion shall be on a Business Day.  Each conversion of
   a Eurodollar Loan on a day other than the last day of an Interest Period
   therefor shall be subject to the provisions of SECTION 8.4.

   Section 2.3    LETTER OF CREDIT PROCEDURES.

        2.3.1     L/C APPLICATIONS.  The Borrower shall give notice to the Agent
   and the applicable Issuing Bank of the proposed issuance of each Letter of
   Credit on a Business Day which is at least three Business Days (or such
   lesser number of days as the Agent and such Issuing Bank shall agree in any
   particular instance) prior to the proposed date of issuance of such Letter of
   Credit.  Each such notice shall be accompanied by an L/C Application, duly
   executed by the Borrower (together with any Subsidiary for the account of
   which the related Letter of Credit is to be issued) and in all respects
   satisfactory to the Agent and the applicable Issuing Bank, together with such
   other documentation as the Agent or such Issuing Bank may request in support
   thereof, it being understood that each L/C Application shall specify, among
   other things, the date on which the proposed Letter of Credit is to be
   issued, the expiration date of such Letter of Credit (which shall not be
   later than the Termination Date) and whether such Letter of Credit is to be
   transferable in whole or in part.  So long as the applicable Issuing Bank has
   not received written notice that the conditions precedent set forth in
   ARTICLE XI with respect to the issuance of such Letter of Credit have not
   been satisfied, such Issuing Bank shall issue such Letter of Credit on the
   requested issuance date.  Each Issuing Bank shall promptly advise the Agent
   and the Banks of the issuance of each Letter of Credit by such Issuing Bank
   and of any amendment thereto, extension thereof or event or circumstance
   changing the amount available for drawing thereunder.

        2.3.2     PARTICIPATION IN LETTERS OF CREDIT.  Concurrently with the
   issuance of each Letter of Credit, the applicable Issuing Bank shall be
   deemed to have sold and transferred to each other Bank, and each other Bank
   shall be deemed irrevocably and unconditionally to have purchased and
   received from such Issuing Bank, without recourse or warranty, an undivided
   interest and participation, to the extent of such other Bank's Percentage, in
   such Letter of Credit and the Borrower's reimbursement obligations with
   respect thereto.  For the purposes of this Agreement, the unparticipated
   portion of each Letter of Credit shall be deemed to be the applicable Issuing
   Bank's "participation" therein.  Each Issuing Bank 

                                       -16-

<PAGE>

   hereby agrees, upon request of the Agent or any Bank, to deliver to such Bank
   a list of all outstanding Letters of Credit issued by such Issuing Bank, 
   together with such information related thereto as such Bank may reasonably 
   request.

        2.3.3     PAYMENTS CONSTITUTE LOANS.  Each payment by the Issuing Bank
   pursuant to a drawing under a Letter of Credit shall constitute and be deemed
   a Loan by the Banks to the Borrower under the Notes and this Agreement as of
   the day and time such payment is made by the Issuing Bank and in the amount
   of such payment.

        2.3.4     LIMITATION ON OBLIGATIONS OF ISSUING BANKS.  In determining
   whether to pay under any Letter of Credit, no Issuing Bank shall have any
   obligation to the Borrower or any Bank other than to confirm that any
   documents required to be delivered under such Letter of Credit appear to have
   been delivered and appear to comply on their face with the requirements of
   such Letter of Credit.  Any action taken or omitted to be taken by an Issuing
   Bank under or in connection with any Letter of Credit, if taken or omitted in
   the absence of gross negligence and willful misconduct, shall not impose upon
   such Issuing Bank any liability to the Borrower or any Bank and shall not
   reduce or impair the Borrower's reimbursement obligations set forth in
   SECTION 2.3.3 or the obligations of the Banks pursuant to SECTION 2.3.5.

        2.3.5     FUNDING BY BANKS TO ISSUING BANKS.  Promptly upon receipt of
   documents requesting a drawing on any Letter of Credit, the Issuing Bank
   shall advise the Agent and each Bank thereof.  Such notice shall include a
   statement by the Issuing Bank of the Business Day on which such drawing is to
   be made under such Letter of Credit.  Not later than 12:00 P.M., Houston,
   Texas time, on the Business Day on which such drawing is to be made under
   such Letter of Credit, each Bank shall provide the Agent for the account of
   the Issuing Bank, at the office specified by the Agent, with immediately
   available funds covering such Bank's Percentage of such drawing.

   Section 2.4    COMMITMENTS SEVERAL.  The failure of any Bank to make a 
requested Loan on any date shall not relieve any other Bank of its obligation 
to make a Loan on such date, but no Bank shall be responsible for the failure 
of any other Bank to make any Loan to be made by such other Bank.

   Section 2.5    CERTAIN CONDITIONS.  Notwithstanding any other provision of 
this Agreement, no Bank shall have an obligation to make any Loan other than 
a Loan to fund a drawing on a Letter of Credit, or to permit the continuation 
of or any conversion into any Eurodollar Loan, and no Issuing Bank shall have 
any obligation to 

                                       -17-

<PAGE>

issue any Letter of Credit, if an Event of Default or Unmatured Event of 
Default exists.

                                     ARTICLE III.

                          NOTES EVIDENCING LOANS; PRINCIPAL

   Section 3.1    NOTES.  The Loans of each Bank shall be evidenced by a 
promissory note (each a "NOTE") substantially in the form set forth in 
EXHIBIT A, with appropriate insertions, payable to the order of such Bank in 
an amount equal to such Bank's Percentage of the Loan Commitment.

   Section 3.2    PAYMENT OF PRINCIPAL OF LOANS.  The Borrower shall repay 
the unpaid principal amount of all Loans on the earlier of (a) the 
Termination Date or (b) such other dates on which the Loans are or may be 
required to be paid pursuant to this Agreement.

   Section 3.3    RECORDKEEPING.  Each Bank shall record in its records the 
date and amount of each Loan made by such Bank, each repayment or conversion 
thereof and, in the case of each Eurodollar Loan, the dates on which each 
Interest Period for such Loan shall begin and end.  The aggregate unpaid 
principal amount so recorded shall be rebuttable presumptive evidence of the 
principal amount owing and unpaid on such Note.  The failure to so record any 
such amount or any error in so recording any such amount shall not, however, 
limit or otherwise affect the obligations of the Borrower hereunder or under 
any Note to repay the principal amount of the Loans evidenced by such Note 
together with all interest accruing thereon.

                                     ARTICLE IV.

                                       INTEREST

   Section 4.1    INTEREST RATES.  The Borrower promises to pay interest on 
the unpaid principal amount of each Loan for the period commencing on the 
date of such Loan until such Loan is paid in full as follows:

        (a)  at all times while such Loan is a Prime Rate Loan, at a rate per
   annum equal to the sum of the Prime Rate from time to time in effect plus the
   Prime Rate Margin from time to time in effect; and

        (b)  at all times while such Loan is a Eurodollar Loan, at a rate per
   annum equal to the sum of the Eurodollar Rate (Reserve Adjusted) applicable
   to each Interest Period for such Loan plus the Eurodollar Margin from time to
   time in effect;

                                       -18-

<PAGE>

PROVIDED, HOWEVER, that at any time an Event of Default exists, the interest 
rate applicable to each Loan shall be increased by 2%.

   Section 4.2    INTEREST PAYMENT DATES.  Accrued interest on each Prime 
Rate Loan shall be payable in arrears on the last day of each calendar 
quarter and on the Termination Date.  Accrued interest on each Eurodollar 
Loan shall be payable on the last day of each Interest Period relating to 
such Loan (and, in the case of a Eurodollar Loan with a one hundred eighty 
(180) day Interest Period, on the ninetieth (90th) day of such Interest 
Period) and at maturity.  Accrued interest shall be payable upon the payment 
or prepayment of any Loan or the conversion of any Loan to a Loan of another 
type (but only upon the principal amount so paid, prepaid or converted).  
After maturity, accrued interest on all Loans shall be payable on demand.

   Section 4.3    INTEREST PERIODS.  Each "Interest Period" for a Eurodollar 
Loan shall commence on the date such Eurodollar Loan is made or converted 
from a Prime Rate Loan, or on the last day of the immediately preceding 
Interest Period for such Eurodollar Loan, and shall end on the date which is 
thirty (30), sixty (60), ninety (90) or one hundred eighty (180) days 
thereafter, as the Borrower may specify:

        (a)  in the case of an Interest Period which commences on the date a
   Eurodollar Loan is made or converted from a Prime Rate Loan, in the related
   notice of borrowing or conversion pursuant to SECTION 2.2.2 or 2.2.3, or

        (b)  in the case of a succeeding Interest Period with respect to any
   Eurodollar Loan, by written notice or telephonic notice (followed immediately
   by written confirmation thereof) to the Agent not later than 10:00 A.M.,
   Houston, Texas time, at least two Business Days prior to the first day of
   such succeeding Interest Period, it being understood that (i) each such
   notice shall be effective upon receipt by the Agent and (ii) if the Borrower
   fails to give such notice, such Loan shall automatically become a Prime Rate
   Loan at the end of its then-current Interest Period.

Each Interest Period which would otherwise end on a day which is not a 
Business Day shall end on the immediately succeeding Business Day.  The 
Borrower may not select any Interest Period for a Loan which would end after 
the Termination Date.

   Section 4.4    SETTING AND NOTICE OF EURODOLLAR RATES.  The applicable 
Eurodollar Rate for each Interest Period shall be determined by the Agent, 
and notice thereof shall be given by the Agent promptly to the Borrower and 
each Bank. Each determination of the applicable Eurodollar Rate by the Agent 
shall be conclusive and binding upon the parties hereto, in the absence of 
demonstrable error.  The Agent shall, upon written request of the Borrower or 

                                       -19-

<PAGE>

any Bank, deliver to the Borrower or such Bank a statement showing the 
computations used by the Agent in determining any applicable Eurodollar Rate 
hereunder.

   Section 4.5    COMPUTATION OF INTEREST.  All determinations of interest 
shall be made on the basis of a year of 360 days, and the actual number of 
days elapsed. The applicable interest rate for each Prime Rate Loan shall 
change simultaneously with each change in the Prime Rate.

                                      ARTICLE V.

                                         FEES

   Section 5.1    NON-USE FEE.  The Borrower agrees to pay to the Agent for 
the account of each Bank a non-use fee, for the period from the Effective 
Date to the Termination Date, at the rate per annum in effect from time to 
time pursuant to SCHEDULE 1.1.A of the daily average of the unused amount of 
such Bank's Percentage of the Commitment Amount.  For purposes of calculating 
usage under this Section, the Commitment Amount shall be deemed used to the 
extent of the aggregate principal amount of all outstanding Loans plus the 
undrawn amount of all Letters of Credit. Such non-use fee shall be payable in 
arrears on the last day of each calendar quarter and on the Termination Date 
for any period then ending for which such non-use fee shall not have 
theretofore been paid.  The non-use fee shall be computed for the actual 
number of days elapsed on the basis of a year of 360 days.

   Section 5.2    LETTER OF CREDIT FEES.  (a) The Borrower agrees to pay to 
the Agent for the account of the Banks pro rata according to their respective 
Percentages a letter of credit fee for each Letter of Credit in an amount 
equal to the rate per annum in effect from time to time pursuant to SCHEDULE 
1.1.A of the undrawn amount of such Letter of Credit (computed for the actual 
number of days elapsed on the basis of a year of 360 days).  Such letter of 
credit fee shall be payable in arrears on the last day of each calendar 
quarter and on the Termination Date for the period from the date of the 
issuance of each Letter of Credit to the date such payment is due or, if 
earlier, the date on which such Letter of Credit expired or was terminated.

   (b)  In addition, with respect to each Letter of Credit, the Borrower 
agrees to pay to the applicable Issuing Bank, for its own account, such fees 
and expenses as such Issuing Bank customarily requires in connection with the 
issuance, negotiation, processing and/or administration of letters of credit 
in similar situations.

   Section 5.3    AGENT'S FEES.  The Borrower agrees to pay to the Agent such 
agent's fees as are mutually agreed to from time to time by the Borrower and 
the Agent.

                                       -20-

<PAGE>

                                  ARTICLE VI.
                                       
           REDUCTION AND TERMINATION OF THE COMMITMENTS; PREPAYMENTS

   Section 6.1   REDUCTION OR TERMINATION OF THE COMMITMENTS.  The Borrower 
may from time to time on at least five Business Days' prior written notice 
received by the Agent (which shall promptly advise each Bank thereof) 
permanently reduce the Commitment Amount to an amount not less than the sum 
of the aggregate unpaid principal amount of the Loans and the aggregate 
Stated Amount of all Letters of Credit.  Any such reduction shall be in an 
amount not less than $5,000,000 or a higher integral multiple of $1,000,000.  
The Borrower may at any time on like notice terminate the Commitments upon 
payment in full of all Loans and all other obligations of the Borrower 
hereunder and cash collateralization in full, pursuant to documentation in 
form and substance reasonably satisfactory to the Banks, of all obligations 
arising with respect to the Letters of Credit.  Upon any such payment of the 
Loans and cash collateralization of the obligations arising with respect to 
the Letters of Credit in a manner satisfactory to the Agent, the Agent shall 
release all Liens created by the Collateral Documents.  All reductions of the 
Commitment Amount shall reduce the Commitments pro rata among the Banks 
according to their respective Percentages.

   Section 6.2   VOLUNTARY PREPAYMENTS.  The Borrower may from time to time 
prepay the Loans in whole or in part, PROVIDED that (a) the Borrower shall 
give the Agent (which shall promptly advise each Bank) notice thereof not 
later than 12:00 P.M. (Houston, Texas time) one Business Day prior to the day 
of such prepayment, in the case of a prepayment of Prime Rate Loans, or two 
Business Days prior to the day of such prepayment, in the case of a 
prepayment of Eurodollar Loans, in either case specifying the Loans to be 
prepaid and the date and amount of prepayment, (b) each partial prepayment 
shall be in a principal amount of at least $100,000 and an integral multiple 
of $100,000 and (c) any prepayment of a Eurodollar Loan on a day other than 
the last day of an Interest Period therefor shall be subject to SECTION 8.4.

                                  ARTICLE VII.

                MAKING AND PRORATION OF PAYMENTS; SETOFF; TAXES


   Section 7.1   MAKING OF PAYMENTS.  All payments of principal of or 
interest on the Notes, and of all non-use fees and Letter of Credit fees, 
shall be made by the Borrower to the Agent in immediately available funds at 
the office specified by the Agent not later than 12:00 P.M., Houston, Texas 
time, on the date due; and funds received after that hour shall be deemed to 
have been received by the Agent on the next following Business Day.  The 

                                      -21-
<PAGE>

Borrower hereby authorizes and instructs the Agent to charge any demand 
deposit account of the Borrower maintained with Bank One for the amount of 
any such payment on the due date therefor, and (subject to there being a 
sufficient balance in such account for such purpose) the Agent agrees to do 
so, PROVIDED that the Agent's failure to so charge such account shall in no 
way affect the obligation of the Borrower to make any such payment.  The 
Agent shall promptly remit to each Bank or other holder of a Note its share 
of all such payments received in collected funds by the Agent for the account 
of such Bank or holder.

   All payments under SECTION 8.1 shall be made by the Borrower directly to the
Bank entitled thereto.

   Section 7.2   APPLICATION OF CERTAIN PAYMENTS.  Each payment of principal 
shall be applied to such Loans as the Borrower shall direct by notice to be 
received by the Agent on or before the date of such payment or, in the 
absence of such notice, as the Agent shall determine in its discretion.  
Concurrently with each remittance to any Bank of its share of any such 
payment, the Agent shall advise such Bank as to the application of such 
payment.

   Section 7.3   DUE DATE EXTENSION.  If any payment of principal or 
interest with respect to any of the Notes, or of non-use fees or Letter of 
Credit fees, falls due on a day which is not a Business Day, then such due 
date shall be extended to the immediately following Business Day (unless, in 
the case of a Eurodollar Loan, such immediately following Business Day is the 
first Business Day of a calendar month, in which case such date shall be the 
immediately preceding Business Day) and, in the case of principal, additional 
interest shall accrue and be payable for the period of any such extension.

   Section 7.4   SETOFF.  The Borrower agrees that the Agent, each Bank and 
each other holder of a Note have all rights of set-off and bankers' lien 
provided by applicable law, and in addition thereto, the Borrower agrees that 
if at any time (a) any payment or other amount owing by the Borrower under 
this Agreement is then due to the Agent, any Bank or any such holder or (b) 
any Unmatured Event of Default under SECTION 12.1.4 with respect to the 
Borrower or any Event of Default exists, the Agent, each Bank and each such 
holder may apply to the payment of such payment or other amount (or, in the 
case of CLAUSE (B), to any obligations of the Borrower hereunder, whether or 
not then due) any and all balances, credits, deposits, accounts or moneys of 
the Borrower then or thereafter with the Agent, such Bank or such holder.  
The Agent and the Banks shall use their best efforts promptly to notify the 
Borrower in writing of any setoff; provided that the failure of the Agent or 
any Bank to give, or the Borrower to receive, such notice shall not affect, 
invalidate or make void the set-off in any manner.  Any set-off by the Agent 
or any Bank shall be for the ratable benefit of the Agent and the Banks.

                                      -22-
<PAGE>

   Section 7.5   PRORATION OF PAYMENTS.  If any Bank shall obtain any 
payment or other recovery (whether voluntary, involuntary, by application of 
offset or otherwise) on account of principal of or interest on any Note (or 
on account of its participation in any Letter of Credit) in excess of its pro 
rata share of payments and other recoveries obtained by all Banks on account 
of principal of and interest on Notes (or such participation in Letters of 
Credit) then held by them, such Bank shall purchase from the other Banks such 
participation in the Notes (or sub-participation in Letters of Credit) held 
by them as shall be necessary to cause such purchasing Bank to share the 
excess payment or other recovery ratably with each of them; PROVIDED, 
HOWEVER, that if all or any portion of the excess payment or other recovery 
is thereafter recovered from such purchasing Bank, the purchase shall be 
rescinded and the purchase price restored to the extent of such recovery.

   Section 7.6   TAXES.  All payments of principal of, and interest on, the 
Loans and all other amounts payable hereunder shall be made free and clear 
of, and without deduction for any present or future income, excise, stamp or 
franchise taxes and other taxes, fees, duties, withholdings or other charges 
of any nature whatsoever imposed by any taxing authority, but excluding 
franchise taxes and taxes imposed on or measured by any Bank's net income, 
receipts, assets or operations (all non-excluded items being called "TAXES"). 
 If any withholding or deduction from any payment to be made by the Borrower 
hereunder is required in respect of any Taxes pursuant to any applicable law, 
rule or regulation, then the Borrower will:

        (a)  pay directly to the relevant authority the full amount required to
   be so withheld or deducted;

        (b)  promptly forward to the Agent an official receipt or other
   documentation satisfactory to the Agent evidencing such payment to such
   authority; and

        (c)  pay to the Agent for the account of the Banks such additional
   amount or amounts as is necessary to ensure that the net amount actually
   received by each Bank will equal the full amount such Bank would have
   received had no such withholding or deduction been required.

Moreover, if any Taxes are directly asserted against the Agent or any Bank 
with respect to any payment received by the Agent or such Bank hereunder, the 
Agent or such Bank may pay such Taxes and the Borrower will promptly pay such 
additional amounts (including any penalty, interest and expense) as is 
necessary in order that the net amount received by such Person after the 
payment of such Taxes (including any Taxes on such additional amount) shall 
equal the amount such Person would have received had such Taxes not been 
asserted.

                                      -23-
<PAGE>

   If the Borrower fails to pay any Taxes when due to the appropriate taxing 
authority or fails to remit to the Agent, for the account of the respective 
Banks, the required receipts or other required documentary evidence, the 
Borrower shall indemnify the Banks for any incremental Taxes, interest or 
penalties that may become payable by any Bank as a result of any such 
failure. For purposes of this SECTION 7.6, a distribution hereunder by the 
Agent or any Bank to or for the account of any Bank shall be deemed a payment 
by the Borrower.  This indemnification shall be made within thirty (30) days 
from the date the Agent makes written demand therefor.  The Agent and the 
Banks shall use reasonable efforts to avoid and minimize any amounts which 
might otherwise be payable pursuant to this SECTION 7.6 (including using 
reasonable efforts to seek refunds of any amounts that are reasonably 
believed not to have been correctly or legally asserted).

   Upon the request from time to time of the Borrower or the Agent, each Bank 
that is organized under the laws of a jurisdiction other than the United 
States of America shall execute and deliver to the Borrower and the Agent one 
or more (as the Borrower or the Agent may reasonably request) United States 
Internal Revenue Service Forms 4224 or Forms 1001 or such other forms or 
documents, appropriately completed, as may be applicable to establish the 
extent, if any, to which a payment to such Bank is exempt from withholding or 
deduction of Taxes.

   The obligations of the Borrower under this SECTION 7.6 are subject to the 
limitation set out in SECTION 14.9.1.

                                 ARTICLE VIII.

            INCREASED COSTS; SPECIAL PROVISIONS FOR EURODOLLAR LOANS

   Section 8.1   INCREASED COSTS.  (a) If, after the date hereof, the 
adoption of any applicable law, rule or regulation, or any change therein, or 
any change in the interpretation or administration thereof by any 
governmental authority, central bank or comparable agency charged with the 
interpretation or administration thereof, or compliance by any Bank (or any 
Eurodollar Office of such Bank) with any request or directive (whether or not 
having the force of law) of any such authority, central bank or comparable 
agency

        (i)  shall subject any Bank (or any Eurodollar Office of such Bank) to
   any tax, duty or other charge with respect to its Eurodollar Loans, its Note
   or its obligation to make Eurodollar Loans, or shall change the basis of
   taxation of payments to any Bank of the principal of or interest on its
   Eurodollar Loans or any other amounts due under this Agreement in respect of
   its Eurodollar Loans or its obligation to make Eurodollar Loans (except for
   changes in the rate of tax on the 

                                      -24-
<PAGE>

   overall net income of such Bank or its Eurodollar Office imposed by the 
   jurisdiction in which such Bank's principal executive office or Eurodollar 
   Office is located); or

        (ii)  shall impose, modify or deem applicable any reserve (including any
   reserve imposed by the Board of Governors of the Federal Reserve System, but
   excluding any reserve included in the determination of interest rates
   pursuant to ARTICLE IV), special deposit or similar requirement against
   assets of, deposits with or for the account of, or credit extended by any
   Bank (or any Eurodollar Office of such Bank); or

        (iii)  shall impose on any Bank (or its Eurodollar Office) any other
   condition affecting its Eurodollar Loans, its Note or its obligation to make
   Eurodollar Loans;

and the result of any of the foregoing is to increase the cost to (or in the 
case of Regulation D of the Board of Governors of the Federal Reserve System, 
to impose a cost on) such Bank (or any Eurodollar Office of such Bank) of 
making or maintaining any Eurodollar Loan, or to reduce the amount of any sum 
received or receivable by such Bank (or its Eurodollar Office) under this 
Agreement or under its Note with respect thereto, then within 10 days after 
demand by such Bank (which demand shall be accompanied by a statement setting 
forth the basis for such demand, a copy of which shall be furnished to the 
Agent), the Borrower shall pay directly to such Bank such additional amount 
as will compensate such Bank for such increased cost or such reduction.

   (b)  If any Bank shall reasonably determine that the adoption or phase-in 
of any applicable law, rule or regulation regarding capital adequacy, or any 
change therein, or any change in the interpretation or administration thereof 
by any governmental authority, central bank or comparable agency charged with 
the interpretation or administration thereof, or compliance by any Bank or 
any Person controlling such Bank with any request or directive regarding 
capital adequacy (whether or not having the force of law) of any such 
authority, central bank or comparable agency, has or would have the effect of 
reducing the rate of return on such Bank's or such controlling Person's 
capital as a consequence of such Bank's obligations hereunder (including such 
Bank's obligations under the Loan Commitment or the L/C Commitment) or under 
any Letter of Credit to a level below that which such Bank or such 
controlling Person could have achieved but for such adoption, change or 
compliance (taking into consideration such Bank's or such controlling 
Person's policies with respect to capital adequacy) by an amount deemed by 
such Bank or such controlling Person to be material, then from time to time, 
within 10 days after demand by such Bank (which demand shall be accompanied 
by a statement setting forth the basis for such demand, a copy of which shall 
be furnished to the Agent), the Borrower shall pay to such Bank such 
additional amount or amounts as will compensate such Bank or such controlling 

                                      -25-
<PAGE>

Person for such reduction; provided, however, the Borrower shall not be 
liable for any such amounts unless the Bank to which such amounts are due 
gives the Borrower notice thereof within 180 days of the date that such Bank 
obtains knowledge that such additional compensation is owing. A certificate 
of such Bank claiming compensation under this Section and setting forth the 
additional amount or amounts to be paid to it hereunder shall be conclusive, 
provided that the determination thereof is made on a reasonable basis. In 
determining such amount or amounts, such Bank may use any reasonable 
averaging and attribution methods.  In making capital adequacy 
determinations, each Bank shall assess capital costs only to the extent such 
costs are generally being assessed by such Bank against other borrowers of 
comparable size and creditworthiness or, if no other borrower is of 
comparable size and creditworthiness, to the extent such Bank is assessing 
capital costs against its largest borrowers.

   Section 8.2   BASIS FOR DETERMINING INTEREST RATE INADEQUATE OR UNFAIR.  If
with respect to any Interest Period:

        (a)  deposits in Dollars (in the applicable amounts) are not being
   offered to the Agent in the interbank eurodollar market for such Interest
   Period, or the Agent otherwise reasonably determines (which determination
   shall be binding and conclusive on the Borrower) that by reason of
   circumstances affecting the interbank eurodollar market adequate and
   reasonable means do not exist for ascertaining the applicable Eurodollar
   Rate; or

        (b)  Banks having an aggregate Percentage of thirty percent (30%) or
   more advise the Agent that the Eurodollar Rate (Reserve Adjusted) as
   determined by the Agent will not adequately and fairly reflect the cost to
   such Banks of maintaining or funding such Loans for such Interest Period
   (taking into account any amount to which such Banks may be entitled under
   SECTION 8.1) or that the making or funding of Eurodollar Loans has become
   impracticable as a result of an event occurring after the date of this
   Agreement which in the opinion of such Banks materially affects such Loans;

THEN the Agent shall promptly notify the other parties thereof and, so long 
as such circumstances shall continue, (i) no Bank shall be under any 
obligation to make or convert into Eurodollar Loans and (ii) on the last day 
of the current Interest Period for each Eurodollar Loan, such Loan shall, 
unless then repaid in full, automatically convert to a Prime Rate Loan.

   Section 8.3   CHANGES IN LAW RENDERING EURODOLLAR LOANS UNLAWFUL.  In the 
event that any change in (including the adoption of any new) applicable laws 
or regulations, or any change in the interpretation of applicable laws or 
regulations by any governmental or other regulatory body charged with the 

                                      -26-
<PAGE>

administration thereof, should make it (or in the good faith judgment of any 
Bank cause a substantial question as to whether it is) unlawful for any Bank 
to make, maintain or fund Eurodollar Loans, then such Bank shall promptly 
notify each of the other parties hereto and, so long as such circumstances 
shall continue, (a) such Bank shall have no obligation to make or convert 
into Eurodollar Loans (but shall make Prime Rate Loans concurrently with the 
making of or conversion into Eurodollar Loans by the Banks which are not so 
affected, in each case in an amount equal to such Bank's pro rata share of 
all Eurodollar Loans which would be made or converted into at such time in 
the absence of such circumstances) and (b) on the last day of the current 
Interest Period for each Eurodollar Loan of such Bank (or, in any event, on 
such earlier date as may be required by the relevant law, regulation or 
interpretation), such Eurodollar Loan shall, unless then repaid in full, 
automatically convert to a Prime Rate Loan. 

   Section 8.4   FUNDING LOSSES.  The Borrower hereby agrees that upon demand 
by any Bank (which demand shall be accompanied by a statement setting forth 
the basis for the amount being claimed, a copy of which shall be furnished to 
the Agent), the Borrower will indemnify such Bank against any net loss or 
expense which such Bank may sustain or incur (including any net loss or 
expense incurred by reason of the liquidation or reemployment of deposits or 
other funds acquired by such Bank to fund or maintain any Eurodollar Loan), 
as reasonably determined by such Bank, as a result of (a) any payment, 
prepayment or conversion of any Eurodollar Loan of such Bank on a date other 
than the last day of an Interest Period for such Loan (including any 
conversion pursuant to SECTION 8.3) or (b) any failure of the Borrower to 
borrow or convert any Loan on a date specified therefor in a notice of 
borrowing or conversion pursuant to this Agreement. For this purpose, all 
notices to the Agent pursuant to this Agreement shall be deemed to be 
irrevocable.

   Section 8.5   RIGHT OF BANKS TO FUND THROUGH OTHER OFFICES.  Each Bank 
may, if it so elects, fulfill its commitment as to any Eurodollar Loan by 
causing a foreign branch or affiliate of such Bank to make such Loan, 
PROVIDED that in such event for the purposes of this Agreement such Loan 
shall be deemed to have been made by such Bank and the obligation of the 
Borrower to repay such Loan shall nevertheless be to such Bank and shall be 
deemed held by it, to the extent of such Loan, for the account of such branch 
or affiliate.

   Section 8.6   DISCRETION OF BANKS AS TO MANNER OF FUNDING.  
Notwithstanding any provision of this Agreement to the contrary, each Bank 
shall be entitled to fund and maintain its funding of all or any part of its 
Loans in any manner it sees fit, it being understood, however, that for the 
purposes of this Agreement all determinations hereunder shall be made as if 
such Bank had actually funded and maintained each Eurodollar Loan during each 
Interest Period for such Loan through the purchase of deposits having a 

                                      -27-
<PAGE>

maturity corresponding to such Interest Period and bearing an interest rate 
equal to the Eurodollar Rate for such Interest Period.

   Section 8.7   MITIGATION OF CIRCUMSTANCES; REPLACEMENT OF AFFECTED BANK.  
(a) Each Bank shall promptly notify the Borrower and the Agent of any event 
of which it has knowledge which will result in, and will use reasonable 
commercial efforts available to it (and not, in such Bank's good faith 
judgment, otherwise disadvantageous to such Bank) to mitigate or avoid, (i) 
any obligation by the Borrower to pay any amount pursuant to SECTION 7.6 or 
8.1 or (ii) the occurrence of any circumstances of the nature described in 
SECTION 8.2 or 8.3 (and, if any Bank has given notice of any such event 
described in CLAUSE (i) or (ii) above and thereafter such event ceases to 
exist, such Bank shall promptly so notify the Borrower and the Agent). 
Without limiting the foregoing, each Bank will designate a different funding 
office if such designation will avoid (or reduce the cost to the Borrower of) 
any event described in CLAUSE (i) or (ii) of the preceding sentence and such 
designation will not, in such Bank's sole judgment, be otherwise 
disadvantageous to such Bank.

   (b)  At any time any Bank is an Affected Bank, the Borrower may replace 
such Affected Bank as a party to this Agreement with one or more other 
bank(s) or financial institution(s) reasonably satisfactory to the Agent (and 
upon notice from the Borrower such Affected Bank shall assign pursuant to an 
Assignment Agreement, and without recourse or warranty, its Commitment, its 
Loans, its Note, its participation in Letters of Credit, and all of its other 
rights and obligations hereunder to such replacement bank(s) or other 
financial institution(s) for a purchase price equal to the sum of the 
principal amount of the Loans so assigned, all accrued and unpaid interest 
thereon, its ratable share of all accrued and unpaid non-use fees and Letter 
of Credit fees, any amounts payable under SECTION 8.4 as a result of such 
Bank receiving payment of any Eurodollar Loan prior to the end of an Interest 
Period therefor and all other obligations owed to such Affected Bank 
hereunder).

   Section 8.8   CONCLUSIVENESS OF STATEMENTS; SURVIVAL OF PROVISIONS. 
Determinations and statements of any Bank pursuant to SECTION 8.1, 8.2, 8.3 
or 8.4 shall be conclusive absent demonstrable error.  Banks may use 
reasonable averaging and attribution methods in determining compensation 
under SECTIONS 8.1 and 8.4, and the provisions of such Sections shall survive 
repayment of the Loans, cancellation of the Notes, cancellation or expiration 
of the Letters of Credit and any termination of this Agreement.

                                      -28-
<PAGE>

                                  ARTICLE IX.

                                  WARRANTIES

   To induce the Agent and the Banks to enter into this Agreement and to 
induce the Banks to make Loans and issue or purchase participations in 
Letters of Credit hereunder, the Borrower warrants to the Agent and the Banks 
that:

   Section 9.1   ORGANIZATION, ETC.  The Borrower is a corporation duly 
organized, validly existing and in good standing under the laws of the State 
of Delaware; each Subsidiary is a corporation duly organized, validly 
existing and in good standing under the laws of the state or jurisdiction of 
its incorporation; and the Borrower and each Subsidiary is duly qualified to 
transact business in each jurisdiction where the nature of its business makes 
such qualification necessary (except in those instances in which the failure 
to be qualified or in good standing does not have a Material Adverse Effect) 
and has full power and authority to own its property and conduct its business 
as presently conducted by it.

   Section 9.2   AUTHORIZATION; NO CONFLICT.  The execution and delivery by 
the Borrower of this Agreement and each other Loan Document to which it is a 
party, the borrowings hereunder, the execution and delivery by each Guarantor 
of each Loan Document to which it is a party and the performance by each of 
the Borrower and each Guarantor of its obligations under each Loan Document 
to which it is a party are within the corporate powers of the Borrower and 
each Guarantor, have been duly authorized by all necessary corporate action 
on the part of the Borrower and each Guarantor (including any necessary 
shareholder action), have received all necessary governmental approval (if 
any shall be required), and do not and will not (a) violate any provision of 
law or any order, decree or judgment of any court or other government agency 
which is binding on the Borrower or any Guarantor, (b) contravene or conflict 
with, or result in a breach of, any provision of the Certificate of 
Incorporation, By-Laws or other organizational documents of the Borrower or 
any Guarantor or of any agreement, indenture, instrument or other document 
which is binding on the Borrower, any Guarantor or any other Subsidiary or 
(c) result in, or require, the creation or imposition of any Lien on any 
property of the Borrower, any Guarantor or any other Subsidiary (other than 
Liens arising under the Loan Documents).

   Section 9.3   VALIDITY AND BINDING NATURE.  Each of this Agreement and 
each other Loan Document to which the Borrower is a party is the legal, valid 
and binding obligation of the Borrower, enforceable against the Borrower in 
accordance with its terms; and each Loan Document to which any Guarantor is a 
party is, or upon the execution and delivery thereof by such Guarantor will 
be, the legal, valid and binding obligation of such Guarantor, enforceable 
against such Guarantor in accordance with its terms.

                                      -29-
<PAGE>

   Section 9.4   FINANCIAL CONDITION.  The audited consolidated financial 
statements of the Borrower and its Subsidiaries dated May 31, 1997, and the 
unaudited consolidated financial statements of the Borrower and its 
Subsidiaries dated November 30, 1997, copies of which have been furnished to 
each Bank:

        (i)  were prepared in accordance with GAAP consistently applied
   throughout the periods covered thereby, except as otherwise expressly noted
   therein (subject, in the case of the unaudited financial statements, to the
   absence of footnotes and to customary year-end audit adjustments); and

        (ii)  fairly present in all material respects on a consolidated basis
   the financial condition of the Borrower and its Subsidiaries as of the dates
   thereof and the results of operations for the periods covered thereby.

   Section 9.5   NO MATERIAL ADVERSE CHANGE.  Since November 30, 1997, there 
has been no material adverse change in the financial condition, operations, 
assets, business, properties or prospects of the Borrower and its 
Subsidiaries taken as a whole.

   Section 9.6   LITIGATION AND OTHER LIABILITIES.  No litigation (including 
derivative actions), arbitration proceeding, labor controversy or 
governmental investigation or proceeding is pending or, to the Borrower's 
knowledge, threatened against the Borrower or any Subsidiary which might 
reasonably be expected to have a Material Adverse Effect, except as set forth 
in SCHEDULE 9.6.  Other than any liability incident to such litigation or 
proceedings, neither the Borrower nor any Subsidiary has any material 
contingent liabilities (except for Contingent Liabilities) which are not 
listed in such SCHEDULE 9.6. 

   Section 9.7   OWNERSHIP OF PROPERTIES; LIENS.  Each of the Borrower and 
each Subsidiary owns good and indefeasible title to all of its properties and 
assets, real and personal, tangible and intangible, of any nature whatsoever 
(including patents, trademarks, trade names, service marks and copyrights), 
free and clear of all Liens, charges and material claims (including material 
infringement claims with respect to patents, trademarks, copyrights and the 
like) except as permitted pursuant to SECTION 10.8.

   Section 9.8   SUBSIDIARIES.  The Borrower has no Subsidiaries except those 
listed in SCHEDULE 9.8.

   Section 9.9   PENSION AND WELFARE PLANS.  (a) During the 
twelve-consecutive-month period prior to the date of the execution and 
delivery of this Agreement or the making of any Loan hereunder, (i) no steps 
have been taken to terminate any Pension Plan and (ii) no contribution 
failure has occurred with respect to any Pension Plan sufficient to give rise 
to a lien under Section 302(f) of ERISA.  No condition exists or event or 
transaction has occurred 

                                      -30-
<PAGE>

with respect to any Pension Plan which could result in the incurrence by the 
Borrower of any material liability, fine or penalty. The Borrower has no 
contingent liability with respect to any post-retirement benefit under a 
Welfare Plan, other than liability for continuation coverage described in 
Part 6 of Subtitle B of Title I of ERISA.

   (b)  All contributions (if any) have been made to any Multiemployer 
Pension Plan that are required to be made by the Borrower or any other member 
of the Controlled Group under the terms of the plan or of any collective 
bargaining agreement or by applicable law; neither the Borrower nor any 
member of the Controlled Group has withdrawn or partially withdrawn from any 
Multiemployer Pension Plan, incurred any withdrawal liability with respect to 
any such plan, received notice of any claim or demand for withdrawal 
liability or partial withdrawal liability from any such plan, and no 
condition has occurred which, if continued, might result in a withdrawal or 
partial withdrawal from any such plan; and neither the Borrower nor any 
member of the Controlled Group has received any notice that any Multiemployer 
Pension Plan is in reorganization, that increased contributions may be 
required to avoid a reduction in plan benefits or the imposition of any 
excise tax, that any such plan is or has been funded at a rate less than that 
required under Section 412 of the Code, that any such plan is or may be 
terminated, or that any such plan is or may become insolvent.

   Section 9.10   INVESTMENT COMPANY ACT.  Neither the Borrower nor any 
Subsidiary is an "investment company" or a company "controlled" by an 
"investment company", within the meaning of the Investment Company Act of 
1940.

   Section 9.11   PUBLIC UTILITY HOLDING COMPANY ACT.  Neither the Borrower 
nor any Subsidiary is a "holding company", or a "subsidiary company" of a 
"holding company", or an "affiliate" of a "holding company" or of a 
"subsidiary company" of a "holding company", within the meaning of the Public 
Utility Holding Company Act of 1935.

   Section 9.12   REGULATION U.  The Borrower is not engaged principally, or 
as one of its important activities, in the business of extending credit for 
the purpose of purchasing or carrying Margin Stock.

   Section 9.13   TAXES.  Each of the Borrower and each Subsidiary has filed 
all tax returns and reports required by law to have been filed by it and has 
paid all taxes and governmental charges thereby shown to be owing, except any 
such taxes or charges which are being diligently contested in good faith by 
appropriate proceedings and for which adequate reserves in accordance with 
GAAP shall have been set aside on its books.

                                      -31-
<PAGE>

   Section 9.14   SOLVENCY, ETC.  On the Effective Date (or, in the case of 
any Person which becomes a Guarantor after the Effective Date, on the date 
such Person becomes a Guarantor), and immediately prior to and after giving 
effect to the issuance of each Letter of Credit and each borrowing hereunder 
and the use of the proceeds thereof, (a) the fair salable value of the assets 
of the Borrower and the Guarantors, on a consolidated basis, exceeds, and 
will immediately following the making of each Loan or other extension of 
credit hereunder, exceed the amount of all debt and liabilities (including 
all Contingent Liabilities) of the Borrower and the Guarantors, (b) neither 
the Borrower nor any Guarantor has, or will have immediately following the 
making of each Loan or other extension of credit hereunder, unreasonably 
small capital to carry out its business as conducted or proposed to be 
conducted; and (c) the Borrower and the Guarantors do not intend to, or 
believe that they will, incur debts beyond their ability to pay such debts as 
they mature.

    Section 9.15   ENVIRONMENTAL MATTERS.

    (a)  NO VIOLATIONS.  Except as set forth on SCHEDULE 9.15, neither the 
Borrower nor any Subsidiary, nor any operator of the Borrower's or any 
Subsidiary's properties, is in violation, or alleged violation, of any 
judgment, decree, order, law, permit, license, rule or regulation pertaining 
to environmental matters, including those arising under the Resource 
Conservation and Recovery Act ("RCRA"), the Comprehensive Environmental 
Response, Compensation and Liability Act of 1980 ("CERCLA"), the Superfund 
Amendments and Reauthorization Act of 1986 or any other Environmental Law 
which (i) in any single case, requires expenditures in any three-year period 
of $500,000 or more by the Borrower and its Subsidiaries in penalties and/or 
for investigative, removal or remedial actions or (ii) individually or in the 
aggregate otherwise might reasonably be expected to have a Material Adverse 
Effect.

    (b)  NOTICES.  Except as set forth on SCHEDULE 9.15, neither the Borrower 
nor any Subsidiary has received notice from any third party, including any 
Federal, state or local Governmental authority: (a) that any one of them has 
been identified by the U.S. Environmental Protection Agency as a potentially 
responsible party under CERCLA with respect to a site listed on the National 
Priorities List, 40 C.F.R. Part 300 Appendix B; (b) that any hazardous waste, 
as defined by 42 U.S.C. Section 6903(5), any hazardous substance as defined 
by 42 U.S.C. Section 9601(14), any pollutant or contaminant as defined by 42 
U.S.C. Section 9601(33) or any toxic substance, oil or hazardous material or 
other chemical or substance regulated by any Environmental Law, excluding 
household hazardous waste (all of the foregoing, "HAZARDOUS SUBSTANCES"), 
which any one of them has generated, transported or disposed of has been 
found at any site at which a Federal, state or local agency or other third 
party has conducted a remedial investigation, removal or other 

                                      -32-
<PAGE>

response action pursuant to any Environmental Law; (c) that the Borrower or 
any Subsidiary must conduct a remedial investigation, removal, response 
action or other activity pursuant to any Environmental Law; or (d) of any 
Environmental Claim which individually or in the aggregate might reasonably 
be expected to have a Material Adverse Effect.

    (c)  HANDLING OF HAZARDOUS SUBSTANCES.  Except as set forth on SCHEDULE 
9.15, (i) no portion of the real property or other assets of the Borrower or 
any Subsidiary has been used for the handling, processing, storage or 
disposal of Hazardous Substances except in accordance in all material 
respects with applicable Environmental Laws; and no underground tank or other 
underground storage receptacle for Hazardous Substances is located on such 
properties; (ii) except in the ordinary course of business of the Borrower 
and its Subsidiaries and in accordance in all material respects with 
applicable Environmental Laws, no Hazardous Substances have been generated or 
are being used on the properties of Borrower or any Subsidiary, except to the 
extent such generation or use, individually or in the aggregate, would not 
reasonably be expected to have a Material Adverse Effect; (iii) there have 
been no Releases or threatened Releases of Hazardous Substances on, upon, 
into or from any real property or other assets of the Borrower or any 
Subsidiary, which Releases singly or in the aggregate might reasonably be 
expected to have a material adverse effect on the value of such real property 
or assets; (iv) to the Borrower's current, actual knowledge without inquiry, 
there have been no Releases on, upon, from or into any real property in the 
vicinity of the real property or other assets of the Borrower or any 
Subsidiary which, through soil or groundwater contamination, may have come to 
be located on the real property or other assets of Borrower or any 
Subsidiary, and which might reasonably be expected to have a Material Adverse 
Effect; and (v) to the extent any Hazardous Substances generated by the 
Borrower and its Subsidiaries have been transported offsite, such 
transportation of Hazardous Substances has been performed only by properly 
licensed carriers and delivered only to treatment or disposal facilities 
maintaining valid permits as required under applicable Environmental Laws, 
which transporters and facilities have been and are, to the best of the 
Borrower's knowledge, operating in compliance with such permits and 
applicable Environmental Laws.

   Section 9.16   YEAR 2000.  The Borrower and its Subsidiaries have reviewed 
the areas within their business and operations which could be adversely 
affected by, and have developed or are developing a program to address on a 
timely basis, any "Year 2000 Problem" (that is, the risk that computer 
applications used by the Borrower and its Subsidiaries may be unable to 
recognize and perform properly date-sensitive functions involving certain 
dates prior to and any date after December 31, 1999).  Based on such review 
and program, the Borrower reasonably believes that any such "Year 2000 
Problem" will not have a Material Adverse Effect.

                                      -33-
<PAGE>

   Section 9.17   INFORMATION.  All information heretofore or 
contemporaneously herewith furnished in writing by the Borrower or any 
Subsidiary to any Bank for purposes of or in connection with this Agreement 
and the transactions contemplated hereby is, and all written information 
hereafter furnished by or on behalf of the Borrower or any Subsidiary to any 
Bank pursuant hereto or in connection herewith will be, true and accurate in 
every material respect on the date as of which such information is dated or 
certified, and none of such information is or will be incomplete by omitting 
to state any material fact necessary to make such information not misleading 
in light of the circumstances under which made (it being recognized by the 
Agent and the Banks that any projections and forecasts provided by the 
Borrower are based on good faith estimates and assumptions believed by the 
Borrower to be reasonable as of the date of the applicable projections or 
assumptions and that actual results during the period or periods covered by 
any such projections and forecasts may differ from projected or forecasted 
results).

   Section 9.18.  DEBT AND CONTINGENT LIABILITIES.  Neither Borrower nor any 
Subsidiary has any Debt except Debt which is described on SCHEDULE 9.18(A). 
Neither Borrower nor any Subsidiary has any Contingent Liabilities except 
Contingent Liabilities which are described on SCHEDULE 9.18(B).  

                                   ARTICLE X.

                                   COVENANTS

   Until the expiration or termination of the Commitments and thereafter 
until all obligations of the Borrower hereunder and under the other Loan 
Documents are paid in full and all Letters of Credit have been terminated, 
the Borrower agrees that, unless at any time the Required Banks shall 
otherwise expressly consent in writing, it will observe and perform the 
covenants set forth below.

   Section 10.1   REPORTS, CERTIFICATES AND OTHER INFORMATION.  The Borrower 
will furnish to the Agent and each Bank:

        10.1.1    AUDIT REPORT.  Promptly when available and in any event within
   one hundred twenty (120) days after the close of each Fiscal Year, a copy of
   the annual audit report of the Borrower and its Subsidiaries for such Fiscal
   Year, including therein consolidated balance sheets of the Borrower and its
   Subsidiaries as of the end of such Fiscal Year and consolidated statements of
   earnings and cash flow of the Borrower and its Subsidiaries for such Fiscal
   Year, certified without qualification by KPMG Peat Marwick, L.L.P. or other
   independent auditors of recognized standing selected by the Borrower and
   reasonably acceptable to the Required Banks. 

                                      -34-
<PAGE>

        10.1.2   QUARTERLY REPORTS.  Promptly when available and in any event
   within 45 days after the end of each Fiscal Quarter (except the last Fiscal
   Quarter) of each Fiscal Year, consolidated balance sheets of the Borrower and
   its Subsidiaries as of the end of such Fiscal Quarter, together with
   consolidated statements of earnings and consolidated statements of cash flow
   for such Fiscal Quarter and for the period beginning with the first day of
   such Fiscal Year and ending on the last day of such Fiscal Quarter, certified
   by an officer of the Borrower acceptable to the Agent to have been prepared
   in accordance with GAAP for interim financial statements and instructions to
   Form 10-Q and Regulation S-X and to fairly present the financial conditions
   and results of operations of Borrower and its Subsidiaries, on a consolidated
   basis, at the date and for the periods indicated therein.  

        10.1.3   COMPLIANCE CERTIFICATES.  Contemporaneously with the
   furnishing of a copy of each annual audit report pursuant to SECTION 10.1.1
   and of each set of quarterly statements pursuant to SECTION 10.1.2, a duly
   completed Compliance Certificate, with appropriate insertions, dated the date
   of such annual report or such quarterly statements and signed by an officer
   of the Borrower acceptable to the Agent.

        10.1.4   PROJECTIONS.  As soon as practicable and in any event within
   45 days after the commencement of each Fiscal Year, consolidated financial
   projections for the Borrower and its Subsidiaries for such Fiscal Year
   prepared in a manner consistent with those projections delivered by the
   Borrower to the Banks prior to the Effective Date or otherwise in a manner
   satisfactory to the Agent.  

        10.1.5   REPORTS TO SEC AND TO SHAREHOLDERS.  Promptly upon the filing
   or sending thereof, copies of all regular, periodic or special reports of the
   Borrower or any Subsidiary filed with the SEC (excluding exhibits thereto,
   provided that the Borrower shall promptly deliver any such exhibit to the
   Agent or any Bank upon request therefor); copies of all registration
   statements of the Borrower or any Subsidiary filed with the SEC (other than
   on Form S-8); and copies of all proxy statements or other communications made
   to security holders generally concerning material developments in the
   business of the Borrower or any Subsidiary.

        10.1.6   NOTICE OF DEFAULT, LITIGATION AND ERISA MATTERS.  Immediately
   upon becoming aware of any of the following, written notice describing the
   same and the steps being taken by the Borrower or the Subsidiary affected
   thereby with respect thereto:

             (a)  the occurrence of an Event of Default or an Unmatured Event of
        Default;

                                      -35-
<PAGE>

             (b)  any litigation, arbitration or governmental investigation or
        proceeding not previously disclosed by the Borrower to the Banks which
        has been instituted or, to the knowledge of the Borrower, is threatened
        against the Borrower or any Subsidiary or to which any of the properties
        of any thereof is subject which, if adversely determined, might
        reasonably be expected to have a Material Adverse Effect;

             (c)  the institution of any steps by any member of the Controlled
        Group or any other Person to terminate any Pension Plan, or the failure
        of any member of the Controlled Group to make a required contribution to
        any Pension Plan (if such failure is sufficient to give rise to a lien
        under Section 302(f) of ERISA) or to any Multiemployer Pension Plan, or
        the taking of any action with respect to a Pension Plan which could
        result in the requirement that the Borrower furnish a bond or other
        security to the PBGC or such Pension Plan, or the occurrence of any
        event with respect to any Pension Plan or Multiemployer Pension Plan
        which could result in the incurrence by any member of the Controlled
        Group of any material liability, fine or penalty (including any claim or
        demand for withdrawal liability or partial withdrawal from any
        Multiemployer Pension Plan), or any material increase in the contingent
        liability of the Borrower with respect to any post-retirement Welfare
        Plan benefit, or any notice that any Multiemployer Pension Plan is in
        reorganization, that increased contributions may be required to avoid a
        reduction in plan benefits or the imposition of an excise tax, that any
        such plan is or has been funded at a rate less than that required under
        Section 412 of the Code, that any such plan is or may be terminated, or
        that any such plan is or may become insolvent;

             (d)  any cancellation or material change in any material insurance
        maintained by the Borrower or any Subsidiary, if the failure of the
        Borrower to maintain such insurance (individually or in the aggregate)
        might reasonably be expected to have a Material Adverse Effect; provided
        that the Borrower shall not be required to give notice of cancellations
        of or changes to insurance policies if such policies are replaced with
        policies containing comparable coverage provisions and similar
        deductibles;

             (e)  any event (including (i) any violation of any Environmental
        Law or the assertion of any Environmental Claim or (ii) the enactment or
        effectiveness of any law, rule or regulation) which might reasonably be
        expected to have a Material Adverse Effect; or

                                      -36-
<PAGE>

             (f)  any setoff, claims, withholdings or other defenses to which
        any of the Collateral, or the Banks' rights with respect to the
        Collateral, are subject, which if asserted might be reasonably likely to
        cause a Material Adverse Effect.

        10.1.7   SUBSIDIARIES.  Promptly upon any change in the list of its
    ubsidiaries, a written report of such change.

        10.1.8   MANAGEMENT REPORTS.  Promptly upon the request of the Agent or
   any Bank, copies of all detailed financial and management reports submitted
   to the Borrower by independent auditors in connection with each annual or
   interim audit made by such auditors of the books of the Borrower.

        10.1.9   MONTHLY FINANCIAL STATEMENTS UPON AN EVENT OF DEFAULT OR
   UNMATURED EVENT OF DEFAULT.  Upon the occurrence and during the continuance
   of an Event of Default or an Unmatured Event of Default, promptly when
   available and in any event within 30 days after the end of each month of each
   Fiscal Year, consolidated balance sheets of the Borrower and its Subsidiaries
   as of the end of such month, together with consolidated statements of
   earnings and consolidated statements of cash flow for such month and for the
   period beginning with the first day of such Fiscal Year and ending on the
   last day of such month, certified by an officer of the Borrower acceptable to
   the Agent to have been prepared in accordance with GAAP and to fairly present
   the financial conditions and results of operations of Borrower and its
   Subsidiaries, on a consolidated basis, at the date and for the periods
   indicated therein.  

        10.1.10   OTHER INFORMATION.  From time to time such other information
   concerning the Borrower and its Subsidiaries as any Bank or the Agent may
   reasonably request.

   Section 10.2   BOOKS, RECORDS AND INSPECTIONS.  The Borrower will keep, 
and will cause each Subsidiary to keep, its books and records in accordance 
with sound business practices sufficient to allow the preparation of 
financial statements in accordance with GAAP; permit, and cause each 
Subsidiary to permit, at any reasonable time and with reasonable notice (or 
at any time without notice if an Event of Default exists), any Bank or the 
Agent or any representative thereof to inspect the properties and operations 
of the Borrower and of such Subsidiary; and permit, and cause each Subsidiary 
to permit, at any reasonable time and with reasonable notice (or at any time 
without notice if an Event of Default exists), any Bank or the Agent or any 
representative thereof to visit any or all of its offices, to discuss its 
financial matters with its officers and its independent auditors (and, 
subject to applicable laws regarding professional privileges, the Borrower 
hereby authorizes such independent auditors to discuss such 

                                      -37-
<PAGE>

financial matters with any Bank or the Agent or any representative thereof 
whether or not any representative of the Borrower or any Subsidiary is 
present), and to examine (and, at the expense of the Borrower or the 
applicable Subsidiary, photocopy extracts from) any of its books or other 
corporate records.

   Section 10.3   INSURANCE.  The Borrower will maintain, and cause each 
Subsidiary to maintain, with responsible insurance companies, such insurance 
as may be required by any law or governmental regulation or court decree or 
order applicable to it and such other insurance, to such extent and against 
such hazards and liabilities, as is customarily maintained by companies 
similarly situated; and, upon request of the Agent or any Bank, furnish to 
the Agent or such Bank a certificate setting forth in reasonable detail the 
nature and extent of all insurance maintained by the Borrower and its 
Subsidiaries.

   Section 10.4   COMPLIANCE WITH LAWS; PAYMENT OF TAXES AND LIABILITIES.  
The Borrower will (a) comply, and cause each Subsidiary to comply, in all 
material respects with all applicable laws (including Environmental Laws), 
rules, regulations, decrees, orders, judgments, licenses and permits; and (b) 
pay, and cause each Subsidiary to pay, prior to delinquency, all taxes and 
other governmental charges against it or any of its property, as well as 
claims of any kind which, if unpaid, might become a Lien on any of its 
property; PROVIDED, HOWEVER, that the foregoing shall not require the 
Borrower or any Subsidiary to pay any such tax or charge so long as it shall 
contest the validity thereof in good faith by appropriate proceedings and 
shall set aside on its books adequate reserves with respect thereto in 
accordance with GAAP.

   Section 10.5   MAINTENANCE OF EXISTENCE, ETC.  The Borrower will maintain 
and preserve, and (subject to SECTION 10.10) cause each Subsidiary to 
maintain and preserve, (a) its existence and good standing in the 
jurisdiction of its incorporation and (b) its qualification and good standing 
as a foreign corporation in each jurisdiction where the nature of its 
business makes such qualification necessary (except in those instances in 
which the failure to be so qualified or in good standing does not have a 
Material Adverse Effect).

   Section 10.6   FINANCIAL COVENANTS.

        10.6.1    CURRENT RATIO.  The Borrower will at all times maintain a
   Current Ratio of not less than 1.75 to 1.00.  The Current Ratio shall be
   calculated and tested quarterly as of the last day of each Fiscal Quarter.

        10.6.2    FUNDED DEBT TO CAPITALIZATION RATIO - COVENANT.  The Borrower
   at all times maintain a Funded Debt to Capitalization Ratio - Covenant of not
   greater than 0.45 to 1.00.  The Funded Debt to Capitalization Ratio -
   Covenant 

                                      -38-
<PAGE>

   shall be calculated and tested quarterly as of the last day of each
   Fiscal Quarter.

        10.6.3    FIXED CHARGE COVERAGE RATIO.  The Borrower will at all times
   maintain a Fixed Charge Coverage Ratio of not less than 1.25 to 1.00.  The
   Fixed Charge Coverage Ratio shall be calculated and tested quarterly as of
   the last day of each Fiscal Quarter, and the Calculation Period for such
   testing shall be the Computation Period ending on the last day of such Fiscal
   Quarter.

        10.6.4    TANGIBLE NET WORTH.  The Borrower will at all times maintain
   Tangible Net Worth in an amount which is not less than the sum of (a) ninety
   percent (90%) of Tangible Net Worth as of November 30, 1997
   ($280,000,000.00), PLUS (b) fifty percent (50%) of Net Income during the
   period beginning on the Effective Date and ending on the date on which such
   calculation is made (PROVIDED that, if Net Income is less than zero for any
   Fiscal Quarter, for purposes of this SECTION 10.6.4 such sum will be deemed
   to have been zero for such Fiscal Quarter) PLUS (c) seventy-five percent
   (75%) of the net proceeds of any equity issued by the Borrower or any of its
   Subsidiaries (on a consolidated basis) after the Effective Date.  Tangible
   Net Worth shall be calculated and tested quarterly as of the last day of each
   Fiscal Quarter.

        10.6.5    CAPITAL EXPENDITURES.  The Borrower will not permit the
   aggregate amount of all Capital Expenditures made by Borrower and its
   Subsidiaries in any Fiscal Year to exceed $30,000,000.  

   Section 10.7   LIMITATIONS ON DEBT AND CONTINGENT LIABILITIES.  The 
Borrower will not, and will not permit any Subsidiary to, create, incur, 
assume or permit to exist any Debt or Contingent Liabilities unless (a) 
immediately before and immediately after giving effect to such additional 
Debt or Contingent Liabilities no Event of Default or Unmatured Event of 
Default shall have occurred and be continuing, and (b) the Borrower is in PRO 
FORMA compliance with all the financial ratios and covenants set forth in 
SECTION 10.6 before and immediately after giving effect to such additional 
Debt.

   Section 10.8   LIENS.  The Borrower will not, and will not permit any 
Subsidiary to, create or permit to exist any Lien on any of its real or 
personal properties, assets or rights of whatsoever nature (whether now owned 
or hereafter acquired), except:

        (a)  Liens in favor of the Agent arising under the Loan Documents;

        (b)  Liens identified in SCHEDULE 10.8;  

                                      -39-
<PAGE>

        (c)  Liens for taxes, assessments or other governmental charges not at
   the time delinquent or thereafter payable without penalty or being contested
   in good faith by appropriate proceedings and, in each case, for which it
   maintains adequate reserves;

        (d)  Liens arising in the ordinary course of business (such as (i) Liens
   of carriers, warehousemen, mechanics and materialmen and other similar Liens
   imposed by law and (ii) Liens incurred in connection with worker's
   compensation, unemployment compensation and other types of social security
   (excluding Liens arising under ERISA) or in connection with surety bonds,
   bids, performance bonds and similar obligations) for sums not overdue or
   being contested in good faith by appropriate proceedings and not involving
   any deposits or advances or borrowed money or the deferred purchase price of
   property or services, and, in each case, for which it maintains adequate
   reserves;

        (e)  attachments, appeal bonds, judgments and other similar Liens, for
   sums not exceeding $250,000 arising in connection with court proceedings,
   provided the execution or other enforcement of such Liens is effectively
   stayed and the claims secured thereby are being actively contested in good
   faith and by appropriate proceedings; 

        (f)  easements, rights of way, restrictions, minor defects or
   irregularities in title and other similar Liens not interfering in any
   material respect with the ordinary conduct of the business of the Borrower or
   any Subsidiary; 

        (g) Liens on property acquired by Borrower or any Subsidiary in
   connection with an Acquisition existing at the time of such Acquisition (and
   not created in contemplation of such Acquisition); and 

        (h) Liens that constitute purchase money security interests on equipment
   securing Debt incurred after the Effective Date for the purpose of financing
   all or any part of the cost of acquiring such equipment after the Effective
   Date in an aggregate amount which does not exceed $10,000.000.00 at any time,
   PROVIDED that any such Lien attaches to such equipment within 60 days of the
   acquisition thereof and such Lien attaches solely to the equipment so
   acquired.  

   Section 10.9   ADDITIONAL MATERIAL SUBSIDIARIES AS GUARANTORS; PLEDGE OF 
STOCK OF ADDITIONAL MATERIAL SUBSIDIARIES.  The Borrower will cause each 
Material Subsidiary created or acquired after the Effective Date to execute a 
Guaranty and deliver such Guaranty to the Agent, unless the Required Banks 
have determined that such Material Subsidiary is not to be a Guarantor.  If 
any Subsidiary which was not determined to be a Material Subsidiary on the 

                                      -40-
<PAGE>

Effective Date or upon its creation or acquisition becomes a Material 
Subsidiary, the Borrower will promptly give the Agent notice of such event 
and will cause such Material Subsidiary to execute and deliver a Guaranty to 
the Agent, unless the Required Banks determine that such Material Subsidiary 
is not to be a Guarantor.  Promptly upon the creation or acquisition of any 
Material Subsidiary after the Effective Date or the determination after the 
Effective Date that a Subsidiary has become a Material Subsidiary, the 
Borrower or the Subsidiary of which such Material Subsidiary is a Subsidiary 
will execute and deliver to the Agent (a) a Pledge Agreement-Borrower or a 
Pledge Agreement-Subsidiary, as applicable, pursuant to which the Borrower or 
such Subsidiary of which such Material Subsidiary is a Subsidiary will pledge 
to the Agent (i) 100% of the shares of voting stock of such newly created or 
acquired Material Subsidiary if such Material Subsidiary is organized and 
existing under the laws of the United States or a state thereof, and (ii) 65% 
of the shares of voting stock of such newly created or acquired Material 
Subsidiary if such Material Subsidiary is not organized and existing under 
the laws of the United States or a state thereof, (b) certificates evidencing 
the shares pledged pursuant to the preceding clause (a), (c) blank stock 
powers with signatures guaranteed in a manner satisfactory to the Agent with 
respect to the certificates referred to in the preceding clause (b), and (d) 
uniform commercial code financing statements with respect to the shares 
pledged pursuant to the preceding clause (a).

   Section 10.10  MERGERS, CONSOLIDATIONS, SALES; LIQUIDATION.  The Borrower 
will not, and will not permit any Subsidiary to, be a party to any merger or 
consolidation, or purchase or otherwise acquire all or substantially all of 
the assets or any stock of any class of, or any partnership or joint venture 
interest in, any other Person, or sell, transfer, convey or lease all or any 
substantial part of its assets, or sell or assign with or without recourse 
any receivables, except for (a) any such merger or consolidation, sale, 
transfer, conveyance, lease or assignment of or by any wholly-owned 
Subsidiary into the Borrower or into, with or to any other wholly-owned 
Subsidiary; (b) any such purchase or other acquisition by the Borrower or any 
wholly-owned Subsidiary of the assets or stock of any wholly-owned 
Subsidiary; (c) any such negotiated, non-hostile purchase or other 
acquisition by the Borrower or any wholly-owned Subsidiary of the assets or 
stock of any other Person where (1) immediately before and immediately after 
giving effect to such purchase or acquisition, no Event of Default or 
Unmatured Event of Default shall have occurred and be continuing; and (2) the 
Borrower is in PRO FORMA compliance (on a combined historical basis) with all 
the financial ratios and covenants set forth in SECTION 10.6 immediately 
before and immediately after giving effect to such purchase or acquisitions; 
and (d) sales and dispositions of assets (including the stock of 
Subsidiaries), other than sales of inventory in the ordinary course of 
business, so long as the net book value of all assets sold or

                                      -41-
<PAGE>

otherwise disposed of in any Fiscal Year does not exceed $5,000,000.00.  The 
Borrower will not dissolve or liquidate.  

   Section 10.11   MODIFICATION OF ORGANIZATIONAL DOCUMENTS.  The Borrower 
will not permit the Certificate of Incorporation, By-Laws or other 
organizational documents of the Borrower or any Subsidiary to be amended or 
modified in any way which might reasonably be expected to materially 
adversely affect the interests of the Banks.

   Section 10.12   USE OF PROCEEDS.  The Borrower will use the proceeds of 
the Loans solely to finance the Borrower's working capital, for acquisitions 
permitted by SECTION 10.10, for Capital Expenditures and for other general 
corporate purposes, including the payment of existing Debt; and not use or 
permit any proceeds of any Loan to be used, either directly or indirectly, 
for the purpose, whether immediate, incidental or ultimate, of "purchasing or 
carrying" any Margin Stock.

   Section 10.13   FURTHER ASSURANCES.  The Borrower will take, and will 
cause each Subsidiary to take, such actions as the Agent or the Required 
Banks may reasonably request from time to time (including the execution and 
delivery of guaranties, pledge agreements, financing statements and other 
documents, the filing or recording of any of the foregoing, the delivery of 
stock certificates and other collateral with respect to which perfection is 
obtained by possession and the delivery of stock powers with signatures 
guaranteed) to ensure that the obligations of the Borrower hereunder and 
under the other Loan Documents are secured as contemplated herein and in the 
Pledge Agreements and guaranteed by the Guarantors by their execution of the 
Guaranties.

   Section 10.14   TRANSACTIONS WITH AFFILIATES.  The Borrower will not, and 
will not permit any Subsidiary to, enter into, or cause, suffer or permit to 
exist any transaction, arrangement or contract with any of its other 
Affiliates (other than the Borrower and its Subsidiaries) which is on terms 
which are less favorable than are obtainable from any Person which is not one 
of its Affiliates.

   Section 10.15   EMPLOYEE BENEFIT PLANS.  The Borrower will maintain, and 
will cause each Subsidiary to maintain, each Pension Plan in substantial 
compliance with all applicable requirements of law and regulations.

   Section 10.16   ENVIRONMENTAL MATTERS.  If any material Release or 
Disposal of Hazardous Substances shall occur or shall have occurred on any 
real property or any other assets of the Borrower or any Subsidiary which 
individually or in the aggregate might reasonably be expected to have a 
Material Adverse Effect, the Borrower shall, or shall cause the applicable 
Subsidiary to, cause the prompt containment and removal of such Hazardous 
Substances and the remediation of such real property or other assets as 
necessary 

                                      -42-
<PAGE>

to comply in all material respects with all Environmental Laws and to 
preserve the value of such real property or other assets.  Without limiting 
the generality of the foregoing, the Borrower shall, and shall cause each 
Subsidiary to, comply in a reasonable and cost-effective manner with any 
valid Federal or state judicial or administrative order requiring the 
performance at any real property of the Borrower or any Subsidiary of 
activities in response to the Release or threatened Release of a Hazardous 
Substance except for the period of time that the Borrower or such Subsidiary 
is diligently and in good faith contesting such order.

   Section 10.17   INCONSISTENT AGREEMENTS.  The Borrower will not, and will 
not permit any Subsidiary to, enter into any agreement containing any 
provision which (a) would be violated or breached by any borrowing by 
Borrower hereunder or by the performance by the Borrower or any Subsidiary of 
any of its obligations hereunder or under any other Loan Document or (b) 
would require the Borrower or any Subsidiary to grant a Lien on any of its 
assets, except for Liens permitted by Section 10.9.

   Section 10.18   BUSINESS ACTIVITIES.  The Borrower will not, and will not 
permit any Subsidiary to, engage in any line of business not reasonably 
related to the businesses in which they were engaged on the Effective Date 
without the prior consent of the Required Banks, which consent shall not be 
unreasonably withheld or delayed.  The Borrower will continue to be engaged 
in the lines of business in which it was engaged on the Effective Date.

   Section 10.19   ADVANCES AND OTHER INVESTMENTS.  The Borrower will not, 
and will not permit any Subsidiary to, make, incur, assume or suffer to exist 
any Investment in any other Person, except (without duplication) the 
following:

        (a)  equity Investments existing on the Effective Date in Subsidiaries
   identified in SCHEDULE 9.8;

        (b)  equity Investments in Subsidiaries acquired after the Effective
   Date in transactions permitted as acquisitions of stock or assets pursuant to
   SECTION 10.10;

        (c)  in the ordinary course of business, contributions by the Borrower
   to the capital of any of its Subsidiaries, or by any such Subsidiary to the
   capital of any of its Subsidiaries;

        (d)  in the ordinary course of business, Investments by the Borrower in
   any Subsidiary or by any of the Subsidiaries in the Borrower, by way of
   intercompany loans, advances or guaranties, all to the extent permitted by
   SECTION 10.7;

        (e)  Investments made in connection with prospective acquisitions of
   stock or assets permitted by SECTION 10.10; 

                                      -43-
<PAGE>

        (f)  Cash Equivalent Investments;

        (g)  loans to customers of the Borrower or any Subsidiary relating to
   the sale of inventory; and

        (h)  loans and advances which do not exceed $5,000,000.00 in principal
   amount outstanding at any time;

PROVIDED, HOWEVER, that no Investment otherwise permitted by CLAUSE (b), (c), 
(d), (e), (g) OR (h) shall be permitted to be made if, immediately before and 
immediately after giving effect thereto, any Event of Default or Unmatured 
Event of Default shall have occurred and be continuing.

   Section 10.20   PARTNERSHIPS AND JOINT VENTURES.  The Borrower will not, 
and will not permit any Subsidiary to, be a party to any partnership or joint 
venture (other than the partnerships and joint ventures listed on Schedule 
10.20), or purchase or otherwise acquire any partnership or joint venture 
interest in, any other Person, except for (a) partnerships or joint ventures 
in which the Borrower and its Subsidiaries are the sole partners or joint 
venturers; and (b) any such purchase or other acquisition by the Borrower or 
any wholly-owned Subsidiary of any partnership or joint venture interest in 
any other Person where (1) immediately before and immediately after giving 
effect to such purchase or acquisition, no Event of Default or Unmatured 
Event of Default shall have occurred and be continuing; and (2) the Borrower 
is in PRO FORMA compliance (on a combined historical basis) with all the 
financial ratios and covenants set forth in SECTION 10.6 immediately before 
and immediately after giving effect to such purchase or acquisition.

   Section 10.21   MANAGEMENT.  Borrower will maintain in senior management 
positions Persons who would generally be deemed to be competent to perform 
such positions by Persons engaged in similar businesses.

                                  ARTICLE XI.

                   EFFECTIVENESS; CONDITIONS OF LENDING, ETC.

   The obligation of each Bank to make its Loans and of any Issuing Bank to 
issue Letters of Credit is subject to the following conditions precedent:

   Section 11.1   INITIAL CREDIT EXTENSIONS.  The obligation of each Bank to 
make its initial Loan and of any Issuing Bank to issue any Letter of Credit, 
whichever first occurs, is, in addition to the conditions precedent specified 
in SECTION 11.2, subject to the conditions precedent (and the date on which 
all such conditions precedent have been satisfied or waived in writing by the 
Banks is 

                                      -44-
<PAGE>

called the "EFFECTIVE DATE") that the Agent shall have received (a) all 
amounts which are then due and payable pursuant to ARTICLE V and (to the 
extent billed) SECTION 14.6 and (b) all of the following, each duly executed 
and dated the Effective Date (or such earlier date as shall be satisfactory 
to the Agent), in form and substance satisfactory to the Agent, and each 
(except for the Notes, of which only one original of each Note shall be 
signed) in sufficient number of signed counterparts to provide one for each 
Bank:

        11.1.1    RESOLUTIONS - BORROWER.  Certified copies of resolutions of
   the Board of Directors of the Borrower authorizing or ratifying the
   execution, delivery and performance by the Borrower of this Agreement, the
   Notes and the other Loan Documents to which the Borrower is a party.

        11.1.2    RESOLUTIONS - GUARANTORS.  Certified copies of resolutions of
   the Board of Directors of each Guarantor authorizing or ratifying the
   execution, delivery and performance by such Guarantor of each Loan Document
   to which such Guarantor is a party.

        11.1.3    INCUMBENCY AND SIGNATURE CERTIFICATES.  A certificate of the
   Secretary or an Assistant Secretary of the Borrower and each Guarantor as of
   the Effective Date certifying the names of the officer or officers of such
   Person authorized to sign the Loan Documents to which such Person is a party,
   together with a sample of the true signature of each such officer (it being
   understood that the Agent and each Bank may conclusively rely on each such
   certificate until formally advised by a like certificate of any changes
   therein).

        11.1.4    CERTIFICATE OF INCORPORATION.  The certificate or articles of
   incorporation of the Borrower certified by the Secretary of State of
   Delaware, and the certificate or articles of incorporation of each Guarantor
   certified by the Secretary or the Assistant Secretary of such Guarantor.

        11.1.5    BYLAWS.  The bylaws of the Borrower and each Guarantor
   certified by the Secretary or an Assistant Secretary of such Person.

        11.1.6    GOVERNMENTAL CERTIFICATES.  Certificates of the appropriate
   government officials of (a) the jurisdiction of incorporation of the Borrower
   and each Guarantor as to the existence and good standing of the Borrower and
   each Guarantor, and (b) each jurisdiction in which the Borrower or any
   Guarantor is qualified to transact business as a foreign corporation as to
   the good standing of such Person as a foreign corporation.

        11.1.7      NOTES.  The Notes.

                                      -45-

<PAGE>

        11.1.8    PLEDGE AGREEMENTS.  (a)  A Pledge Agreement-Borrower pursuant
   to which the Borrower will pledge to the Agent (a) 100% of the shares of
   voting stock of each Material Subsidiary owned by it if such Material
   Subsidiary is organized and existing under the laws of the United States or
   a state thereof, and (b) 65% of the shares of voting stock of each Material
   Subsidiary owned by it if such Material Subsidiary is not organized and
   existing under the laws of the United States or a state thereof, together
   with stock certificates representing the stock pledged thereby, stock powers
   with respect thereto (containing signature guaranties), uniform commercial
   code financing statements with respect thereto and other items required to be
   delivered in connection therewith. 

        (b)  A Pledge Agreement-Subsidiary pursuant to which any Subsidiary who
   is the parent of a Material Subsidiary will pledge to the Agent (a) 100% of
   the shares of voting stock of each Material Subsidiary owned by it if such
   Material Subsidiary is organized and existing under the laws of the United
   States or a state thereof, and (b) 65% of the shares of voting stock of each
   Material Subsidiary owned by it if such Material Subsidiary is not organized
   and existing under the laws of the United States or a state thereof, together
   with stock certificates representing the stock pledged thereby, stock powers
   with respect thereto (containing signature guaranties), uniform commercial
   code financing statements with respect thereto and other items required to be
   delivered in connection therewith. 

        11.1.9    GUARANTIES.  Guaranties executed by each of the Material
   Subsidiaries who are to be Guarantors listed on Schedule 1.1.B.

        11.1.10   CONSENTS, ETC.  Certified copies of all documents evidencing
   any necessary corporate action, consents and governmental approvals (if any)
   required for the execution, delivery and performance by the Borrower and the
   Guarantors of the documents referred to in this ARTICLE XI.

        11.1.11   COMPLIANCE CERTIFICATE.  A Compliance Certificate as of
   November 30, 1997.

        11.1.12   OPINION OF COUNSEL FOR THE BORROWER AND GUARANTORS.  The
   opinion of Haynes and Boone, L.L.P., counsel to the Borrower and Guarantors.

        11.1.13   OTHER.  Such other documents as the Agent or any Bank may
   reasonably request.

   Section 11.2   CONDITIONS.  The obligation (a) of each Bank to make each 
Loan and (b) of each Issuing Bank to issue each Letter of 

                                       -46-

<PAGE>

Credit is subject to the following further conditions precedent that:

        11.2.1    COMPLIANCE WITH WARRANTIES, NO DEFAULT, ETC.  Both before and
   after giving effect to any borrowing and the issuance of any Letter of Credit
   the following statements shall be true and correct:

             (a)  the representations and warranties of the Borrower and
        Guarantors set forth in this Agreement (excluding SECTION 9.6) and the
        other Loan Documents shall be true and correct in all material respects
        with the same effect as if then made (except to the extent stated to
        relate to an earlier date, in which case such representations and
        warranties shall be true and correct in all material respects as of such
        earlier date);

             (b)  except as disclosed by the Borrower to the Agent and the Banks
        pursuant to SECTION 9.6,

                  (i)  no litigation (including derivative actions), arbitration
             proceeding, labor controversy or governmental investigation or
             proceeding shall be pending or, to the knowledge of the Borrower,
             threatened against the Borrower or any of its Subsidiaries which
             might reasonably be expected to have a Material Adverse Effect or
             which purports to affect the legality, validity or enforceability
             of this Agreement, the Notes or any other Loan Document; and

                  (ii) no development shall have occurred in any litigation
             (including derivative actions), arbitration proceeding, labor
             controversy or governmental investigation or proceeding disclosed
             pursuant to SECTION 9.6 which might reasonably be expected to have
             a Material Adverse Effect; and

             (c)  no Event of Default or Unmatured Event of Default shall have
        then occurred and be continuing, and neither the Borrower nor any of its
        Subsidiaries shall be in violation of any law or governmental regulation
        or court order or decree where such violation or violations singly or in
        the aggregate might reasonably be expected to have a Material Adverse
        Effect.

        11.2.2    CONFIRMATORY CERTIFICATE.  If requested by the Agent or any
   Bank, the Agent shall have received (in sufficient counterparts to provide
   one to each Bank) a certificate dated the date of such requested Loan or
   Letter of Credit and signed by a duly authorized representative of the
   Borrower as to the matters set out in SECTION 11.2.1 (it being 

                                       -47-

<PAGE>

   understood that each request by the Borrower for the making of a Loan or the 
   issuance of a Letter of Credit shall be deemed to constitute a warranty by 
   the Borrower that the conditions precedent set forth in SECTION 11.2.1 will 
   be satisfied at the time of the making of such Loan or the issuance of such 
   Letter of Credit), together with such other documents as the Agent or any 
   Bank may reasonably request in support thereof.


                                   ARTICLE XII.

                        EVENTS OF DEFAULT AND THEIR EFFECT

   Section 12.1   EVENTS OF DEFAULT.  Each of the following shall constitute 
an Event of Default under this Agreement:

        12.1.1    NON-PAYMENT OF THE LOANS, ETC.  Default in the payment when
   due of the principal of, or interest on, any Loan; or default in the payment
   when due of any fee or other amount payable by the Borrower hereunder or
   under any other Loan Document. 

        12.1.2    WARRANTIES.  Any warranty made by the Borrower herein is
   breached, or is false or misleading, in any material respect, or any
   schedule, certificate, financial statement, report, notice or other writing
   furnished by the Borrower to the Agent or any Bank in connection herewith is
   false or misleading in any material respect as of the date as of which the
   facts therein set forth are stated or certified.

        12.1.3    NON-COMPLIANCE WITH PROVISIONS OF THIS AGREEMENT.  (a) Failure
   by the Borrower to comply with or to perform any covenant set forth in
   SECTION 10.1, 10.2, 10.3, 10.4, 10.6, 10.7, 10.8, 10.9, 10.13, 10.14, 10.15
   OR 10.16 and continuance of such failure for thirty (30) days following
   delivery by the Lender to the Borrower of notice of such failure; or (b)
   failure by the Borrower to comply with or to perform any provision of this
   Agreement other than the covenants set forth in SECTION 10.6. 

        12.1.4    BANKRUPTCY, INSOLVENCY, ETC.  The Borrower or any Material
   Subsidiary becomes insolvent or generally fails to pay, or admits in writing
   its inability or refusal to pay, debts as they become due; or the Borrower or
   any Subsidiary applies for, consents to, or acquiesces in the appointment of
   a trustee, receiver or other custodian for the Borrower or such Material
   Subsidiary or any property thereof, or makes a general assignment for the
   benefit of creditors; or, in the absence of such application, consent or
   acquiescence, a trustee, receiver or other custodian is appointed for the
   Borrower or any Material Subsidiary or for a substantial part of the property
   of any thereof; or any bankruptcy, 

                                       -48-

<PAGE>
   reorganization, debt arrangement, or other case or proceeding under any 
   bankruptcy or insolvency law, or any dissolution or liquidation proceeding 
   (except the voluntary dissolution, not under any bankruptcy or insolvency 
   law, of a Material Subsidiary), is commenced in respect of the Borrower or 
   any Material Subsidiary, and if such case or proceeding is not commenced by 
   the Borrower or such Material Subsidiary, it is consented to or acquiesced in
   by the Borrower or such Material Subsidiary, or remains for 60 days 
   undismissed; or the Borrower or any Material Subsidiary takes any corporate 
   action to authorize, or in furtherance of, any of the foregoing.

        12.1.5    NON-PAYMENT OF OTHER DEBT.  Any default shall occur under the
   terms applicable to any Debt of the Borrower or any Subsidiary in an
   aggregate principal amount which exceeds $2,000,000.00 and such default shall
   (a) consist of the failure to pay such Debt when due (subject to any
   applicable grace period), whether by acceleration or otherwise, or (b)
   accelerate the maturity of such Debt or permit the holder or holders thereof,
   or any trustee or agent for such holder or holders, to cause such Debt to
   become due and payable prior to its expressed maturity, and a period of
   thirty (30) days shall have elapsed following the occurrence of such default.
   

        12.1.6    OTHER MATERIAL OBLIGATIONS.  Default in the payment when due,
   or in the performance or observance of, any material obligation of, or
   condition agreed to by, the Borrower or any Material Subsidiary with respect
   to any material purchase or lease of goods or services where such default,
   singly or in the aggregate with other such defaults might reasonably be
   expected to have a Material Adverse Effect (except only to the extent that
   the existence of any such default is being contested by the Borrower or such
   Subsidiary in good faith and by appropriate proceedings and appropriate
   reserves have been made in respect of such default), and period of thirty
   (30) days shall have elapsed following delivery by the Lender to the Borrower
   of notice of the occurrence of such default.

        12.1.7    PENSION PLANS.  (i) Institution of any steps by the Borrower
   or any other Person to terminate a Pension Plan if as a result of such
   termination the Borrower could be required to make a contribution to such
   Pension Plan, or could incur a liability or obligation to such Pension Plan,
   in excess of $250,000.00; (ii) a contribution failure occurs with respect to
   any Pension Plan sufficient to give rise to a Lien under section 302(f) of
   ERISA; or (iii) there shall occur any withdrawal or partial withdrawal from
   a Multiemployer Pension Plan and the withdrawal liability (without unaccrued
   interest) to Multiemployer Pension Plans as a result of such withdrawal
   (including any outstanding withdrawal liability that the 

                                       -49-

<PAGE>

   Borrower and the Controlled Group have incurred on the date of such 
   withdrawal) exceeds $250,000.00.

        12.1.8     JUDGMENTS.  Final judgments which exceed an aggregate of
   $250,000.00 shall be rendered against the Borrower, or any Material
   Subsidiary and shall not have been paid, discharged or vacated or had
   execution thereof stayed pending appeal within 30 days after entry or filing
   of such judgments.

        12.1.9    INVALIDITY OF GUARANTY, ETC.  Any Guaranty shall cease to be
   in full force and effect with respect to any Guarantor, any Guarantor shall
   fail (subject to any applicable grace period) to comply with or to perform
   any applicable provision of the Guaranty executed by such Guarantor, or any
   Guarantor (or any Person by, through or on behalf of such Guarantor) shall
   contest in any manner the validity, binding nature or enforceability of the
   Guaranty executed by such Guarantor.

        12.1.10   INVALIDITY OF COLLATERAL DOCUMENTS, ETC.  Any Collateral
   Document shall cease to be in full force and effect with respect to the
   Borrower or any Guarantor, the Borrower or any Guarantor shall fail (subject
   to any applicable grace period) to comply with or to perform any applicable
   provision of any Collateral Document to which such entity is a party, or the
   Borrower or any Guarantor (or any Person by, through or on behalf of the
   Borrower or any Guarantor) shall contest in any manner the validity, binding
   nature or enforceability of any Collateral Document.

   Section 12.2   EFFECT OF EVENT OF DEFAULT.  If any Event of Default 
described in SECTION 12.1.4 shall occur, the Commitments (if they have not 
theretofore terminated) shall immediately terminate and the Notes and all 
other obligations hereunder shall become immediately due and payable and the 
Borrower shall become immediately obligated to deliver to the Agent cash 
collateral in an amount equal to the outstanding face amount of all Letters 
of Credit, all without notice, demand, presentment, notice of dishonor, 
notice of acceleration, notice of intent to accelerate, notice of intent to 
demand, protest, or other formalities of any kind, all of which are hereby 
expressly waived by the Borrower; and, if any other Event of Default shall 
occur and be continuing, the Agent (upon written request of the Required 
Banks) shall declare the Commitments (if they have not theretofore 
terminated) to be terminated and/or declare all Notes and all other 
obligations hereunder to be due and payable and/or demand that the Borrower 
immediately deliver to the Agent cash collateral in amount equal to the 
outstanding face amount of all Letters of Credit, whereupon the Commitments 
(if they have not theretofore terminated) shall immediately terminate and/or 
all Notes and all other obligations hereunder shall become immediately due 
and payable and/or the 

                                       -50-

<PAGE>

Borrower shall immediately become obligated to deliver to the Agent cash 
collateral in an amount equal to the face amount of all Letters of Credit, 
all without notice, demand, presentment, notice of dishonor, notice of 
acceleration, notice of intent to accelerate, notice of intent to demand, 
protest, or other formalities of any kind, all of which are hereby expressly 
waived by the Borrower.  The Agent shall promptly advise the Borrower of any 
such declaration, but failure to do so shall not impair the effect of such 
declaration.  Notwithstanding the foregoing, the effect as an Event of 
Default of any event described in SECTION 12.1.1, SECTION 12.1.2 or SECTION 
12.1.4 may be waived by the written concurrence of all of the Banks, and the 
effect as an Event of Default of any other event described in this SECTION 12 
may be waived by the written concurrence of the Required Banks.  Any cash 
collateral delivered hereunder shall be held by the Agent (without liability 
for interest thereon) and applied to obligations arising in connection with 
any drawing under a Letter of Credit.  After the expiration or termination of 
all Letters of Credit, such cash collateral shall be applied by the Agent to 
any remaining obligations hereunder and any excess shall be delivered to the 
Borrower or as a court of competent jurisdiction may elect.

                                    ARTICLE XIII.

                                      THE AGENT

     Section 13.1   APPOINTMENT AND AUTHORIZATION.  (a) Each Bank hereby 
irrevocably (subject to SECTION 13.9) appoints, designates and authorizes the 
Agent to take such action on its behalf under the provisions of this 
Agreement and each other Loan Document and to exercise such powers and 
perform such duties as are expressly delegated to it by the terms of this 
Agreement or any other Loan Document, together with such powers as are 
reasonably incidental thereto. Notwithstanding any provision to the contrary 
contained elsewhere in this Agreement or in any other Loan Document, the 
Agent shall not have any duties or responsibilities except those expressly 
set forth herein, nor shall the Agent have or be deemed to have any fiduciary 
relationship with any Bank, and no implied covenants, functions, 
responsibilities, duties, obligations or liabilities shall be read into this 
Agreement or any other Loan Document or otherwise exist against the Agent.

     (b)  Each Issuing Bank shall act on behalf of the Banks with respect to 
any Letters of Credit issued by it and the documents associated therewith.  
Each Issuing Bank shall have all of the benefits and immunities (i) provided 
to the Agent in this ARTICLE XIII with respect to any acts taken or omissions 
suffered by such Issuing Bank in connection with Letters of Credit issued by 
it or proposed to be issued by it and the applications and agreements for 
letters of credit pertaining to such Letters of Credit as fully as if the 
term "Agent", as used in this ARTICLE XIII, included such 

                                       -51-

<PAGE>

Issuing Bank with respect to such acts or omissions and (ii) as additionally 
provided in this Agreement with respect to the Issuing Banks.

     Section 13.2   DELEGATION OF DUTIES.  The Agent may execute any of its 
duties under this Agreement or any other Loan Document by or through agents, 
employees or attorneys-in-fact and shall be entitled to advice of counsel 
concerning all matters pertaining to such duties.  The Agent shall not be 
responsible for the negligence or misconduct of any agent or attorney-in-fact 
that it selects with reasonable care.

     Section 13.3   LIABILITY OF AGENT.  None of the Agent-Related Persons 
shall (i) be liable for any action taken or omitted to be taken by any of 
them under or in connection with this Agreement or any other Loan Document or 
the transactions contemplated hereby (except for its own gross negligence or 
willful misconduct), or (ii) be responsible in any manner to any of the Banks 
for any recital, statement, representation or warranty made by the Borrower 
or any Subsidiary or Affiliate of the Borrower, or any officer thereof, 
contained in this Agreement or in any other Loan Document, or in any 
certificate, report, statement or other document referred to or provided for 
in, or received by the Agent under or in connection with, this Agreement or 
any other Loan Document, or the validity, effectiveness, genuineness, 
enforceability or sufficiency of this Agreement or any other Loan Document, 
or for any failure of the Borrower or any other party to any Loan Document to 
perform its obligations hereunder or thereunder.  No Agent-Related Person 
shall be under any obligation to any Bank to ascertain or to inquire as to 
the observance or performance of any of the agreements contained in, or 
conditions of, this Agreement or any other Loan Document, or to inspect the 
properties, books or records of the Borrower or any of the Borrower's 
Subsidiaries or Affiliates.

     Section 13.4   RELIANCE BY AGENT.  The Agent shall be entitled to rely, 
and shall be fully protected in relying, upon any writing, resolution, 
notice, consent, certificate, affidavit, letter, telegram, facsimile, telex 
or telephone message, statement or other document or conversation believed by 
it to be genuine and correct and to have been signed, sent or made by the 
proper Person or Persons, and upon advice and statements of legal counsel 
(including counsel to the Borrower), independent accountants and other 
experts selected by the Agent.  The Agent shall be fully justified in failing 
or refusing to take any action under this Agreement or any other Loan 
Document unless it shall first receive such advice or concurrence of the 
Required Banks as it deems appropriate and, if it so requests, confirmation 
from the Banks of their obligation to indemnify the Agent against any and all 
liability and expense which may be incurred by it by reason of taking or 
continuing to take any such action.  The Agent shall in all cases be fully 
protected in acting, or in refraining from acting, under this Agreement or 
any other Loan Document in accordance with a request or consent of the 

                                       -52-

<PAGE>

Required Banks and such request and any action taken or failure to act 
pursuant thereto shall be binding upon all of the Banks.

     Section 13.5   NOTICE OF DEFAULT.  The Agent shall not be deemed to have 
knowledge or notice of the occurrence of any Event of Default or Unmatured 
Event of Default except with respect to defaults in the payment of principal, 
interest and fees required to be paid to the Agent for the account of the 
Banks, unless the Agent shall have received written notice from a Bank or the 
Borrower referring to this Agreement, describing such Event of Default or 
Unmatured Event of Default and stating that such notice is a "notice of 
default".  The Agent will notify the Banks of its receipt of any such notice. 
 The Agent shall take such action with respect to such Event of Default or 
Unmatured Event of Default as may be requested by the Required Banks in 
accordance with ARTICLE XII; PROVIDED, HOWEVER, that unless and until the 
Agent has received any such request, the Agent may (but shall not be 
obligated to) take such action, or refrain from taking such action, with 
respect to such Event of Default or Unmatured Event of Default as it shall 
deem advisable or in the best interest of the Banks.

     Section 13.6   CREDIT DECISION.  Each Bank acknowledges that none of the 
Agent-Related Persons has made any representation or warranty to it, and that 
no act by the Agent hereafter taken, including any review of the affairs of 
the Borrower and its Subsidiaries, shall be deemed to constitute any 
representation or warranty by any Agent-Related Person to any Bank.  Each 
Bank represents to the Agent that it has, independently and without reliance 
upon any Agent-Related Person and based on such documents and information as 
it has deemed appropriate, made its own appraisal of and investigation into 
the business, prospects, operations, property, financial and other condition 
and creditworthiness of the Borrower and its Subsidiaries, and all applicable 
bank regulatory laws relating to the transactions contemplated hereby, and 
made its own decision to enter into this Agreement and to extend credit to 
the Borrower hereunder.  Each Bank also represents that it will, 
independently and without reliance upon any Agent-Related Person and based on 
such documents and information as it shall deem appropriate at the time, 
continue to make its own credit analysis, appraisals and decisions in taking 
or not taking action under this Agreement and the other Loan Documents, and 
to make such investigations as it deems necessary to inform itself as to the 
business, prospects, operations, property, financial and other condition and 
creditworthiness of the Borrower. Except for notices, reports and other 
documents expressly herein required to be furnished to the Banks by the 
Agent, the Agent shall not have any duty or responsibility to provide any 
Bank with any credit or other information concerning the business, prospects, 
operations, property, financial or other condition or creditworthiness of the 
Borrower which may come into the possession of any of the Agent-Related 
Persons.

                                       -53-

<PAGE>

     Section 13.7   INDEMNIFICATION.  Whether or not the transactions 
contemplated hereby are consummated, the Banks shall indemnify upon demand 
the Agent-Related Persons (to the extent not reimbursed by or on behalf of 
the Borrower and without limiting the obligation of the Borrower to do so), 
pro rata, from and against any and all Indemnified Liabilities; PROVIDED, 
HOWEVER, that no Bank shall be liable for any payment to the Agent-Related 
Person of any portion of the Indemnified Liabilities resulting solely from 
such Person's gross negligence or willful misconduct.  Without limitation of 
the foregoing, each Bank shall reimburse the Agent upon demand for its 
ratable share of any costs or out-of-pocket expenses (including reasonable 
fees of attorneys for the Agent  (including the allocable costs of internal 
legal services and all disbursements of internal counsel)) incurred by the 
Agent in connection with the preparation, execution, delivery, 
administration, modification, amendment or enforcement (whether through 
negotiations, legal proceedings or otherwise) of, or legal advice in respect 
of rights or responsibilities under, this Agreement, any other Loan Document, 
or any document contemplated by or referred to herein, to the extent that the 
Agent is not reimbursed for such expenses by or on behalf of the Borrower.  
The undertaking in this Section shall survive repayment of the Loans, 
cancellation of the Notes, any foreclosure under, or any modification, 
release or discharge of, any or all of the Collateral Documents, any 
termination of this Agreement and the resignation or replacement of the Agent.

    For the purposes of this SECTION 13.7, "INDEMNIFIED LIABILITIES" shall 
mean: any and all liabilities, obligations, losses, damages, penalties, 
actions, judgments, suits, costs, charges, expenses and disbursements 
(including reasonable fees of attorneys for the Agent (including the 
allocable costs of internal legal services and all disbursements of internal 
counsel)) of any kind or nature whatsoever which may at any time (including 
at any time following repayment of the Loan and the termination, resignation 
or replacement of the Agent or the replacement of any Bank) be imposed on, 
incurred by or asserted against any Agent-Related Person in any way relating 
to or arising out of this Agreement or any document contemplated by or 
referred to herein, or the transactions contemplated hereby, or any action 
taken or omitted by any such Person under or in connection with any of the 
foregoing, including with respect to any investigation, litigation or 
proceeding (including (a) any case, action or proceeding before any court or 
other governmental authority relating to bankruptcy, reorganization, 
insolvency, liquidation, receivership, dissolution, winding-up or relief of 
debtors, or (b) any general assignment for the benefit of creditors, 
composition, marshalling of assets for creditors, or other, similar 
arrangement in respect of its creditors generally or any substantial portion 
of its creditors; undertaken under U.S. Federal, state or foreign law, 
including the Bankruptcy Code, and including any appellate proceeding) 
related to or arising out of this Agreement or the Commitments or the use of 
                                       -54-

<PAGE>

the proceeds thereof, whether or not any Agent-Related Person, any Bank or 
any of their respective officers, directors, employees, counsel, agents or 
attorneys-in-fact is a party thereto.

     Section 13.8   AGENT IN INDIVIDUAL CAPACITY.  Bank One and its 
Affiliates may make loans to, issue letters of credit for the account of, 
accept deposits from, acquire equity interests in and generally engage in any 
kind of banking, trust, financial advisory, underwriting or other business 
with the Borrower and its Subsidiaries and Affiliates as though Bank One were 
not the Agent hereunder and without notice to or consent of the Banks. The 
Banks acknowledge that, pursuant to such activities, Bank One or its 
Affiliates may receive information regarding the Borrower or its Affiliates 
(including information that may be subject to confidentiality obligations in 
favor of the Borrower or such Subsidiary) and acknowledge that the Agent 
shall be under no obligation to provide such information to them. With 
respect to their Loans, Bank One and its Affiliates shall have the same 
rights and powers under this Agreement as any other Bank and may exercise the 
same as though Bank One were not the Agent, and the terms "Bank" and "Banks" 
include Bank One and its Affiliates, to the extent applicable, in their 
individual capacities.

     Section 13.9   SUCCESSOR AGENT; ASSIGNMENT OF AGENCY.  The Agent may, 
and at the request of the Required Banks shall, resign as Agent upon thirty 
(30) days' notice to the Banks.  If the Agent resigns under this Agreement, 
the Required Banks shall, with (so long as no Event of Default exists) the 
consent of the Borrower (which shall not be unreasonably withheld or 
delayed), appoint from among the Banks a successor agent for the Banks.  If 
no successor agent is appointed prior to the effective date of the 
resignation of the Agent, the Agent may appoint, after consulting with the 
Banks and the Borrower, a successor agent from among the Banks. Upon the 
acceptance of its appointment as successor agent hereunder, such successor 
agent shall succeed to all the rights, powers and duties of the retiring 
Agent and the term "Agent" shall mean such successor agent, and the retiring 
Agent's appointment, powers and duties as Agent shall be terminated. After 
any retiring Agent's resignation hereunder as Agent, the provisions of this 
ARTICLE XIII and SECTIONS 14.6 and 14.13 shall inure to its benefit as to any 
actions taken or omitted to be taken by it while it was Agent under this 
Agreement.  If no successor agent has accepted appointment as Agent by the 
date which is thirty (30) days following a retiring Agent's notice of 
resignation, the retiring Agent's resignation shall nevertheless thereupon 
become effective and the Banks shall perform all of the duties of the Agent 
hereunder until such time, if any, as the Required Banks appoint a successor 
agent as provided for above.  Notwithstanding the foregoing, however, Bank 
One may not be removed as the Agent at the request of the Required Banks 
unless Bank One shall also simultaneously be replaced as an "Issuing Bank" 
hereunder pursuant 

                                       -55-

<PAGE>

to documentation in form and substance reasonably satisfactory to Bank One.

   Section 13.10  WITHHOLDING TAX.

        (a)  If any Bank is a "foreign corporation, partnership or trust" within
   the meaning of the Code and such Bank claims exemption from, or a reduction
   of, U.S. withholding tax under Sections 1441 or 1442 of the Code, such Bank
   agrees to deliver to the Agent:

             (i) if such Bank claims an exemption from, or a reduction of,
        withholding tax under a United States tax treaty, properly completed
        Internal Revenue Service ("IRS") Forms 1001 and W-8 before the payment
        of any interest in the first calendar year and before the payment of any
        interest in each third succeeding calendar year during which interest
        may be paid under this Agreement;

             (ii)  if such Bank claims that interest paid under this Agreement
        is exempt from United States withholding tax because it is effectively
        connected with a United States trade or business of such Bank, two
        properly completed and executed copies of IRS Form 4224 before the
        payment of any interest is due in the first taxable year of such Bank
        and in each succeeding taxable year of such Bank during which interest
        may be paid under this Agreement, and IRS Form W-9; and

             (iii)  such other form or forms as may be required under the Code
        or other laws of the United States as a condition to exemption from, or
        reduction of, United States withholding tax.

   Such Bank agrees to promptly notify the Agent of any change in circumstances
   which would modify or render invalid any claimed exemption or reduction.

        (b)  If any Bank claims exemption from, or reduction of, withholding tax
   under a United States tax treaty by providing IRS Form 1001 and such Bank
   sells, assigns, grants a participation in, or otherwise transfers all or part
   of the obligations of the Borrower to such Bank, such Bank agrees to notify
   the Agent of the percentage amount in which it is no longer the beneficial
   owner of such obligations of the Borrower hereunder.  To the extent of such
   percentage amount, the Agent will treat such Bank's IRS Form 1001 as no
   longer valid.

        (c)  If any Bank claiming exemption from United States withholding tax
   by filing IRS Form 4224 with the Agent sells, 

                                       -56-

<PAGE>

   assigns, grants a participation in, or otherwise transfers all or part of 
   the obligations of the Borrower to such Bank hereunder, such Bank agrees to 
   undertake sole responsibility for complying with the withholding tax 
   requirements imposed by Sections 1441 and 1442 of the Code.

        (d)  If any Bank is entitled to a reduction in the applicable
   withholding tax, the Agent may withhold from any interest payment to such
   Bank an amount equivalent to the applicable withholding tax after taking into
   account such reduction.  If the forms or other documentation required by
   SUBSECTION (a) of this Section are not delivered to the Agent, then the Agent
   may withhold from any interest payment to such Bank not providing such forms
   or other documentation an amount equivalent to the applicable withholding
   tax.

        (e)  If the IRS or any other governmental authority of the United States
   or any other jurisdiction asserts a claim that the Agent did not properly
   withhold tax from amounts paid to or for the account of any Bank (because the
   appropriate form was not delivered or was not properly executed, or because
   such Bank failed to notify the Agent of a change in circumstances which
   rendered the exemption from, or reduction of, withholding tax ineffective, or
   for any other reason) such Bank shall indemnify the Agent fully for all
   amounts paid, directly or indirectly, by the Agent as tax or otherwise,
   including penalties and interest, and including any taxes imposed by any
   jurisdiction on the amounts payable to the Agent under this Section, together
   with all costs and expenses (including reasonable fees of attorneys for the
   Agent [[(including the allocable costs of internal legal services and all
   disbursements of internal counsel]])). The obligation of the Banks under this
   subsection shall survive the repayment of the Loans, cancellation of the
   Notes, any termination of this Agreement and the resignation or replacement
   of the Agent.

     Section 13.11  COLLATERAL MATTERS.  The Banks irrevocably authorize the 
Agent, at its option and in its discretion, to release any Lien granted to or 
held by the Agent under any Collateral Document (i) upon termination of the 
Commitments and payment in full of all Loans and all other obligations of the 
Borrower hereunder and the expiration or termination of all Letters of Credit;
(ii) constituting property sold or to be sold or disposed of as part of or in 
connection with any disposition permitted hereunder; or (iii) subject to 
SECTION 14.1, if approved, authorized or ratified in writing by all the Banks. 
Upon request by the Agent at any time, the Banks will confirm in writing the 
Agent's authority to release particular types or items of collateral pursuant 
to this SECTION 13.11.


                                       -57-

<PAGE>

                                     ARTICLE XIV.

                                       GENERAL

     Section 14.1   WAIVER; AMENDMENTS.  No delay on the part of the Agent, 
any Bank or any other holder of a Note in the exercise of any right, power or 
remedy shall operate as a waiver thereof, nor shall any single or partial 
exercise by any of them of any right, power or remedy preclude other or 
further exercise thereof, or the exercise of any other right, power or 
remedy.  No amendment, modification or waiver of, or consent with respect to, 
any provision of this Agreement or the Notes shall in any event be effective 
unless the same shall be in writing and signed and delivered by Banks having 
an aggregate Percentage of not less than the aggregate Percentage expressly 
designated herein with respect thereto or, in the absence of such designation 
as to any provision of this Agreement or the Notes, by the Required Banks, 
and then any such amendment, modification, waiver or consent shall be 
effective only in the specific instance and for the specific purpose for 
which given.  No amendment, modification, waiver or consent shall change the 
Percentage of any Bank without the consent of such Bank. No amendment, 
modification, waiver or consent shall (i) extend or increase the amount of 
the Commitments, (ii) extend the date for payment of any principal of or 
interest on the Loans or any fees payable hereunder, (iii) reduce the 
principal amount of any Loan, the rate of interest thereon or any fees 
payable hereunder, (iv) release a Guaranty (other than with respect to a 
Guarantor which ceases to be a Subsidiary as a result of a transaction 
permitted hereunder) or all or substantially all of the collateral granted 
under the Collateral Documents or (v) reduce the aggregate Percentage 
required to effect an amendment, modification, waiver or consent without, in 
each case, the consent of all Banks.  No provisions of ARTICLE XIII or other 
provision of this Agreement affecting the Agent in its capacity as such shall 
be amended, modified or waived without the consent of the Agent.  No 
provision of this Agreement relating to the rights or duties of an Issuing 
Bank in its capacity as such shall be amended, modified or waived without the 
consent of such Issuing Bank.

     Section 14.2   CONFIRMATIONS.  The Borrower and each holder of a Note 
agree from time to time, upon written request received by it from the other, 
to confirm to the other in writing (with a copy of each such confirmation to 
the Agent) the aggregate unpaid principal amount of the Loans then 
outstanding under such Note.

     Section 14.3   NOTICES.  Except as otherwise provided in SECTION 2.2, 
all notices hereunder shall be in writing (including facsimile transmission) 
and shall be sent to the applicable party at its address shown on SCHEDULE 
14.3 or at such other address as such party may, by written notice received 
by the other parties, have designated as its address for such purpose.  
Notices sent by facsimile transmission shall be deemed to have been given 
when sent 

                                       -58-

<PAGE>

with confirmation of transmission; notices sent by mail shall be deemed to 
have been given three Business Days after the date when sent by registered or 
certified mail, postage prepaid; and notices sent by hand delivery or 
overnight courier service shall be deemed to have been given when received.  
For purposes of SECTION 2.2, the Agent shall be entitled to rely on 
telephonic instructions from any person that the Agent in good faith believes 
is an authorized officer or employee of the Borrower, and the Borrower shall 
hold the Agent and each Bank harmless from any loss, cost or expense 
resulting from any such reliance.

     Section 14.4   COMPUTATIONS.  Where the character or amount of any asset 
or liability or item of income or expense is required to be determined, or 
any consolidation or other accounting computation is required to be made, for 
the purpose of this Agreement, such determination or calculation shall, to 
the extent applicable and except as otherwise specified in this Agreement, be 
made in accordance with GAAP, consistently applied; PROVIDED that if the 
Borrower notifies the Agent that the Borrower wishes to amend any covenant in 
ARTICLE X to eliminate or to take into account the effect of any change in 
GAAP on the operation of such covenant (or if the Agent notifies the Borrower 
that the Required Banks wish to amend ARTICLE X for such purpose), then the 
Borrower's compliance with such covenant shall be determined on the basis of 
GAAP in effect immediately before the relevant change in GAAP became 
effective, until either such notice is withdrawn or such covenant is amended 
in a manner satisfactory to the Borrower and the Required Banks.

     Section 14.5   REGULATION U.  Each Bank represents that it in good faith 
is not relying, either directly or indirectly, upon any Margin Stock as 
collateral security for the extension or maintenance by it of any credit 
provided for in this Agreement.

     Section 14.6   COSTS, EXPENSES AND TAXES.  The Borrower agrees to pay 
promptly following written demand all reasonable out-of-pocket costs and 
expenses of the Agent (including the reasonable fees and charges of counsel 
for the Agent and of local counsel, if any, who may be retained by said 
counsel) in connection with the preparation, execution, delivery and 
administration of this Agreement, the other Loan Documents and all other 
documents provided for herein or delivered or to be delivered hereunder or in 
connection herewith (including any amendments, supplements or waivers to any 
Loan Documents), and all reasonable out-of-pocket costs and expenses 
(including reasonable attorneys' fees, court costs and other legal expenses 
and allocated costs of staff counsel) incurred by the Agent and each Bank 
after an Event of Default in connection with the enforcement of this 
Agreement, the other Loan Documents or any such other documents.  Each Bank 
agrees to reimburse the Agent for such Bank's pro rata share (based on its 
respective Percentage) of any such costs and expenses of the Agent not paid 
by the Borrower. In addition, the Borrower agrees to pay, 

                                       -59-

<PAGE>

and to save the Agent and the Banks harmless from all liability for, (a) any 
stamp or other taxes (excluding income taxes and franchise taxes based on net 
income, assets or operations) which may be payable in connection with the 
execution and delivery of this Agreement, the borrowings hereunder, the 
issuance of the Notes or the execution and delivery of any other Loan 
Document or any other document provided for herein or delivered or to be 
delivered hereunder or in connection herewith and (b) any fees of the 
Borrower's auditors in connection with any reasonable exercise by the Agent 
and the Banks of their rights pursuant to SECTION 10.2.  All obligations 
provided for in this SECTION 14.6 shall survive repayment of the Loans, 
cancellation of the Notes and any termination of this Agreement.

     Section 14.7   SUBSIDIARY REFERENCES.  The provisions of this Agreement 
relating to Subsidiaries shall apply only during such times as the Borrower 
has one or more Subsidiaries.

     Section 14.8   CAPTIONS.  Section captions used in this Agreement are 
for convenience only and shall not affect the construction of this Agreement.

   Section 14.9   ASSIGNMENTS; PARTICIPATIONS.

        14.9.1    ASSIGNMENTS.  Any Bank may, with the prior written consents of
   the Borrower and the Agent (which consents shall not be unreasonably delayed
   or withheld), at any time assign and delegate to one or more commercial banks
   or other Persons (any Person to whom such an assignment and delegation is to
   be made being herein called an "ASSIGNEE"), all or any fraction of such
   Bank's Loans and Commitments (which assignment and delegation shall be of a
   constant, and not a varying, percentage of all the assigning Bank's Loans and
   Commitments) in a minimum aggregate amount equal to the lesser of (i) the
   assigning Bank's remaining aggregate Commitments and (ii) $5,000,000;
   PROVIDED, HOWEVER, that (a) no assignment and delegation may be made to any
   Person if, at the time of such assignment and delegation, the Borrower would
   be obligated to pay any greater amount under SECTION 7.6 or ARTICLE VIII to
   the Assignee than the Borrower is then obligated to pay to the assigning Bank
   under such Sections (and if any assignment is made in violation of the
   foregoing, the Borrower will not be required to pay the incremental amounts)
   and (b) the Borrower and the Agent shall be entitled to continue to deal
   solely and directly with such Bank in connection with the interests so
   assigned and delegated to an Assignee until the date when all of the
   following conditions shall have been met:

             (x)  five Business Days (or such lesser period of time as the Agent
        and the assigning Bank shall agree) shall have passed after written
        notice of such assignment 

                                       -60-

<PAGE>

   and delegation, together with payment instructions, addresses and related 
   information with respect to such Assignee, shall have been given to the 
   Borrower and the Agent by such assigning Bank and the Assignee,

             (y)  the assigning Bank and the Assignee shall have executed and
        delivered to the Borrower and the Agent an assignment agreement
        substantially in the form of EXHIBIT D (an "ASSIGNMENT AGREEMENT"),
        together with any documents required to be delivered thereunder, which
        Assignment Agreement shall have been accepted by the Agent, and

             (z)  the assigning Bank or the Assignee shall have paid the Agent
        a processing fee of $3,500.

From and after the date on which the conditions described above have been 
met, (x) such Assignee shall be deemed automatically to have become a party 
hereto and, to the extent that rights and obligations hereunder have been 
assigned and delegated to such Assignee pursuant to such Assignment 
Agreement, shall have the rights and obligations of a Bank hereunder, and (y) 
the assigning Bank, to the extent that rights and obligations hereunder have 
been assigned and delegated by it pursuant to such Assignment Agreement, 
shall be released from its obligations hereunder. Within five Business Days 
after effectiveness of any assignment and delegation, the Borrower shall 
execute and deliver to Agent (for delivery to the Assignee and the Assignor, 
as applicable) a new Note in the principal amount of the Assignee's Loan 
Commitment and, if the assigning Bank has retained a Loan Commitment 
hereunder, a replacement Note in the principal amount of the Loan Commitment 
retained by the assigning Bank (such Note to be in exchange for, but not in 
payment of, the predecessor Note held by such assigning Bank).  Each such 
Note shall be dated the effective date of such assignment.  The assigning 
Bank shall mark the predecessor Note "exchanged" and deliver it to the 
Borrower.  Accrued interest on that part of the predecessor Note being 
assigned shall be paid as provided in the Assignment Agreement.  Accrued 
interest and fees on that part of the predecessor Note not being assigned 
shall be paid to the assigning Bank.  Accrued interest and accrued fees shall 
be paid at the same time or times provided in the predecessor Note and in 
this Agreement.  Any attempted assignment and delegation not made in 
accordance with this SECTION 14.9.1 shall be null and void.

     Notwithstanding the foregoing provisions of this SECTION 14.9.1 or any 
other provision of this Agreement, any Bank may at any time assign all or any 
portion of its Loans and its Note to a Federal Reserve Bank (but no such 
assignment shall release any Bank from any of its obligations hereunder).

     Section 14.9.2 PARTICIPATIONS.  Any Bank may at any time sell to one or 
more commercial banks or other Persons participating 

                                       -61-

<PAGE>

interests in any Loan owing to such Bank, the Note held by such Bank, the 
Commitments of such Bank, the direct or participation interest of such Bank 
in any Letter of Credit or any other interest of such Bank hereunder (any 
Person purchasing any such participating interest being herein called a 
"PARTICIPANT").  In the event of a sale by a Bank of a participating interest 
to a Participant, (x) such Bank shall remain the holder of its Note for all 
purposes of this Agreement, (y) the Borrower and the Agent shall continue to 
deal solely and directly with such Bank in connection with such Bank's rights 
and obligations hereunder and (z) all amounts payable by the Borrower shall 
be determined as if such Bank had not sold such participation and shall be 
paid directly to such Bank.  No Participant shall have any direct or indirect 
voting rights hereunder except with respect to any of the events (excluding 
the events described in CLAUSE (v) thereof) described in the penultimate 
sentence of SECTION 14.1.  Each Bank agrees to incorporate the requirements 
of the preceding sentence into each participation agreement which such Bank 
enters into with any Participant. The Borrower agrees that if amounts 
outstanding under this Agreement and the Notes are due and payable (as a 
result of acceleration or otherwise), each Participant shall be deemed to 
have the right of setoff in respect of its participating interest in amounts 
owing under this Agreement, any Note and with respect to any Letter of Credit 
to the same extent as if the amount of its participating interest were owing 
directly to it as a Bank under this Agreement or such Note; PROVIDED that 
such right of setoff shall be subject to the obligation of each Participant 
to share with the Banks, and the Banks agree to share with each Participant, 
as provided in SECTION 7.5.  The Borrower also agrees that each Participant 
shall be entitled to the benefits of SECTION 7.6 and ARTICLE VIII as if it 
were a Bank (provided that no Participant shall receive any greater 
compensation pursuant to SECTION 7.6 or ARTICLE VIII than would have been 
paid to the participating Bank if no participation had been sold).

     Section 14.10  GOVERNING LAW.  This Agreement, each Note and each other 
Loan Document shall be a contract made under and governed by the internal 
laws of the State of Texas.  All obligations of the Borrower and rights of 
the Agent, the Banks and any other holder of a Note expressed herein or in 
any other Loan Document shall be in addition to and not in limitation of 
those provided by applicable law.

     Section 14.11  SEVERABILITY.  Whenever possible each provision of this 
Agreement shall be interpreted in such manner as to be effective and valid 
under applicable law, but if any provision of this Agreement shall be 
prohibited by or invalid under applicable law, such provision shall be 
ineffective to the extent of such prohibition or invalidity, without 
invalidating the remainder of such provision or the remaining provisions of 
this Agreement.  

                                       -62-

<PAGE>

     Section 14.12  COUNTERPARTS.  This Agreement may be executed in any 
number of counterparts and by the different parties hereto on separate 
counterparts and each such counterpart shall be deemed to be an original, but 
all such counterparts shall together constitute but one and the same 
Agreement.  When counterparts executed by all of the parties hereto shall 
have been lodged with the Agent (or, in the case of any Bank as to which an 
executed counterpart shall not have been so lodged, the Agent shall have 
received confirmation from such Bank of execution of a counterpart hereof by 
such Bank), this Agreement shall become effective as of the date hereof, and 
at such time the Agent shall notify the Borrower and each Bank.

     Section 14.13  SUCCESSORS AND ASSIGNS.  This Agreement shall be binding 
upon the Borrower, the Banks and the Agent and their respective successors 
and assigns, and shall inure to the benefit of the Borrower, the Banks and 
the Agent and the successors and assigns of the Banks and the Agent; 
PROVIDED, however, that the Borrower shall not assign its obligations under 
this Agreement except in connection with a transaction which is in compliance 
with the terms and provisions of this Agreement.

     Section 14.14   MAXIMUM INTEREST RATE.  No provision of this Agreement 
or of any other Loan Documents shall require the payment or the collection of 
interest in excess of the maximum permitted by applicable law.  If any excess 
of interest in such respect is hereby provided for, or shall be adjudicated 
to be so provided, in any Loan Document or otherwise in connection with the 
transactions contemplated by this Agreement, the provisions of this Section 
shall govern and prevail and neither the Borrower nor the sureties, 
guarantors, successors, or assigns of the Borrower shall be obligated to pay 
the excess amount of such interest or any other excess sum paid for the use, 
forbearance, or detention of sums loaned pursuant hereto.  In the event any 
Bank ever receives, collects, or applies as interest any such sum, such 
amount which would be in excess of the maximum amount permitted by applicable 
law shall be applied as a payment and reduction of the principal of the 
indebtedness evidenced by the Note held by such Bank; and, if the principal 
of such Note has been paid in full, any remaining excess shall forthwith be 
paid to the Borrower.  In determining whether or not the interest paid or 
payable exceeds the Maximum Rate, Borrower and Lender shall, to the extent 
permitted by applicable law, (a) characterize any non-principal payment as an 
expense, fee or premium rather than as interest, (b) exclude voluntary 
prepayments and the effects thereof, and (c) amortize, prorate, allocate, and 
spread in equal or unequal parts the total amount of interest throughout the 
entire contemplated term of the indebtedness evidenced by the Notes so that 
interest for the entire term does not exceed the Maximum Rate.

   Section 14.15  INDEMNIFICATION BY THE BORROWER.

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<PAGE>

        (a)  IN CONSIDERATION OF THE EXECUTION AND DELIVERY OF THIS AGREEMENT BY
   THE AGENT AND THE BANKS AND THE AGREEMENT TO EXTEND THE COMMITMENTS PROVIDED
   HEREUNDER, THE BORROWER HEREBY AGREES INDEMNIFY, EXONERATE AND HOLD THE
   AGENT, EACH BANK AND EACH OF THE OFFICERS, DIRECTORS, EMPLOYEES, AFFILIATES
   AND AGENTS OF THE AGENT AND EACH BANK (EACH A "BANK PARTY") FREE AND HARMLESS
   FROM AND AGAINST ANY AND ALL ACTIONS, CAUSES OF ACTION, SUITS, LOSSES,
   LIABILITIES, DAMAGES AND EXPENSES, INCLUDING REASONABLE ATTORNEYS' FEES AND
   CHARGES (COLLECTIVELY, FOR PURPOSES OF THIS SECTION 14.15, CALLED THE
   "INDEMNIFIED LIABILITIES"), INCURRED BY THE BANK PARTIES OR ANY OF THEM AS A
   RESULT OF, OR ARISING OUT OF, OR RELATING TO (I) ANY TENDER OFFER, MERGER,
   PURCHASE OF STOCK, PURCHASE OF ASSETS OR OTHER SIMILAR TRANSACTION FINANCED
   OR PROPOSED TO BE FINANCED IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, WITH
   THE PROCEEDS OF ANY OF THE LOANS, (II) THE USE, HANDLING, RELEASE, EMISSION,
   DISCHARGE, TRANSPORTATION, STORAGE, TREATMENT OR DISPOSAL OF ANY HAZARDOUS
   SUBSTANCE AT ANY PROPERTY OWNED OR LEASED BY THE BORROWER OR ANY SUBSIDIARY,
   (III) ANY VIOLATION OF ANY ENVIRONMENTAL LAWS WITH RESPECT TO CONDITIONS AT
   ANY PROPERTY OWNED OR LEASED BY THE BORROWER OR ANY SUBSIDIARY OR THE
   OPERATIONS CONDUCTED THEREON, (IV) THE INVESTIGATION, CLEANUP OR REMEDIATION
   OF OFFSITE LOCATIONS AT WHICH THE BORROWER OR ANY SUBSIDIARY OR THEIR
   RESPECTIVE PREDECESSORS ARE ALLEGED TO HAVE DIRECTLY OR INDIRECTLY DISPOSED
   OF HAZARDOUS SUBSTANCES OR (V) THE EXECUTION, DELIVERY, PERFORMANCE OR
   ENFORCEMENT OF THIS AGREEMENT OR ANY OTHER LOAN DOCUMENT BY ANY OF THE BANK
   PARTIES, EXCEPT FOR ANY SUCH INDEMNIFIED LIABILITIES ARISING ON ACCOUNT OF
   ANY SUCH BANK PARTY'S GROSS NEGLIGENCE OR WILLFUL MISCONDUCT.  IF AND TO THE
   EXTENT THAT THE FOREGOING UNDERTAKING MAY BE UNENFORCEABLE FOR ANY REASON,
   THE BORROWER HEREBY AGREES TO MAKE THE MAXIMUM CONTRIBUTION TO THE PAYMENT
   AND SATISFACTION OF EACH OF THE INDEMNIFIED LIABILITIES WHICH IS PERMISSIBLE
   UNDER APPLICABLE LAW.  NOTHING SET FORTH ABOVE SHALL BE CONSTRUED TO RELIEVE
   ANY BANK PARTY FROM ANY OBLIGATION IT MAY HAVE UNDER THIS AGREEMENT.

        (b)  ALL OBLIGATIONS PROVIDED FOR IN THIS SECTION 14.15 SHALL SURVIVE
   REPAYMENT OF THE LOANS, CANCELLATION OF THE NOTES, ANY FORECLOSURE UNDER, OR
   ANY MODIFICATION, RELEASE OR DISCHARGE OF ANY OR ALL OF THE COLLATERAL
   DOCUMENTS AND ANY TERMINATION OF THIS AGREEMENT.

     Section 14.16  FORUM SELECTION AND CONSENT TO JURISDICTION.  ANY 
LITIGATION BASED HEREON, OR ARISING OUT OF, UNDER, OR IN CONNECTION WITH THIS 
AGREEMENT OR ANY OTHER LOAN DOCUMENT, SHALL BE BROUGHT AND MAINTAINED 
EXCLUSIVELY IN THE COURTS OF THE STATE OF TEXAS OR IN THE UNITED STATES 
DISTRICT COURT FOR THE SOUTHERN DISTRICT OF TEXAS; PROVIDED, HOWEVER, THAT 
ANY SUIT SEEKING ENFORCEMENT AGAINST ANY COLLATERAL OR OTHER PROPERTY MAY BE 
BROUGHT, AT THE AGENT'S OPTION, IN THE COURTS OF ANY JURISDICTION 

                                       -64-

<PAGE>

WHERE SUCH COLLATERAL OR OTHER PROPERTY MAY BE FOUND.  THE BORROWER HEREBY 
EXPRESSLY AND IRREVOCABLY SUBMITS TO THE JURISDICTION OF THE COURTS OF THE 
STATE OF TEXAS AND OF THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN 
DISTRICT OF TEXAS FOR THE PURPOSE OF ANY SUCH LITIGATION AS SET FORTH ABOVE.  
THE BORROWER FURTHER IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS BY 
REGISTERED MAIL, POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN OR WITHOUT 
THE STATE OF TEXAS.  THE BORROWER HEREBY EXPRESSLY AND IRREVOCABLY WAIVES, TO 
THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH IT MAY NOW OR 
HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY SUCH LITIGATION BROUGHT IN ANY 
SUCH COURT REFERRED TO ABOVE AND ANY CLAIM THAT ANY SUCH LITIGATION HAS BEEN 
BROUGHT IN AN INCONVENIENT FORUM.  TO THE EXTENT THAT THE BORROWER HAS OR 
HEREAFTER MAY ACQUIRE ANY IMMUNITY FROM JURISDICTION OF ANY COURT OR FROM ANY 
LEGAL PROCESS (WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO 
JUDGMENT, ATTACHMENT IN AID OF EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF 
OR ITS PROPERTY, THE BORROWER HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN 
RESPECT OF ITS OBLIGATIONS UNDER THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS.

     Section 14.17  WAIVER OF JURY TRIAL.  EACH OF THE BORROWER, THE AGENT 
AND EACH BANK HEREBY WAIVES ANY RIGHT TO A TRIAL BY JURY IN ANY ACTION OR 
PROCEEDING TO ENFORCE OR DEFEND ANY RIGHTS UNDER THIS AGREEMENT, ANY NOTE, 
ANY OTHER LOAN DOCUMENT AND ANY AMENDMENT, INSTRUMENT, DOCUMENT OR AGREEMENT 
DELIVERED OR WHICH MAY IN THE FUTURE BE DELIVERED IN CONNECTION HEREWITH OR 
THEREWITH OR ARISING FROM ANY BANKING RELATIONSHIP EXISTING IN CONNECTION 
WITH ANY OF THE FOREGOING, AND AGREES THAT ANY SUCH ACTION OR PROCEEDING 
SHALL BE TRIED BEFORE A COURT AND NOT BEFORE A JURY.  

     SECTION 14.18.  ENTIRE AGREEMENT.  THIS AGREEMENT, THE NOTES, AND THE 
OTHER LOAN DOCUMENTS REFERRED TO HEREIN EMBODY THE FINAL, ENTIRE AGREEMENT 
AMONG THE PARTIES HERETO WITH RESPECT TO THE SUBJECT MATTER HEREOF AND 
THEREOF AND SUPERSEDE ANY AND ALL PRIOR COMMITMENTS, AGREEMENTS, 
REPRESENTATIONS, AND UNDERSTANDINGS, WHETHER WRITTEN OR ORAL, RELATING TO THE 
SUBJECT MATTER HEREOF AND THEREOF AND MAY NOT BE CONTRADICTED OR VARIED BY 
EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OR 
DISCUSSIONS OF THE PARTIES HERETO.  THERE ARE NO ORAL AGREEMENTS AMONG THE 
PARTIES HERETO.  

                                       -65-

<PAGE>

     IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement 
as of the day and year first above written, and have delivered this Agreement 
in Houston, Texas.

                              BORROWER:

                              INPUT/OUTPUT, INC.


                              By:  /s/ Robert P. Brindley
                                   --------------------------------------------
                                   Robert P. Brindley
                                   Executive Vice President
                                   and Chief Financial Officer



                              AGENT:

                              BANK ONE, TEXAS, N.A.

                              By:  /s/ Marc A. Dunmire
                                   --------------------------------------------
                                   Marc A. Dunmire
                                   Vice President



                              BANKS:

                              BANK ONE, TEXAS, N.A.

                              By: /s/ Marc A. Dunmire
                                   --------------------------------------------
                                   Marc A. Dunmire
                                   Vice President



                              BANK OF AMERICA TEXAS, N.A.


                              By:  /s/ Joseph R. Patterson
                                   --------------------------------------------
                                   Joseph R. Patterson
                                   Vice President



                              SOUTHWEST BANK OF TEXAS, N.A.


                              By:  /s/ Carmen Billings
                                   --------------------------------------------
                                   Carmen Billings
                                   Vice President 

                                       -66-


<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S UNAUDITED FINANCIAAL STATEMENTS FOR THE THIRD QUARTER ENDED 2/28/98
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          MAY-31-1998
<PERIOD-START>                             JUN-01-1997
<PERIOD-END>                               FEB-28-1998
<CASH>                                          50,347
<SECURITIES>                                         0
<RECEIVABLES>                                  102,080
<ALLOWANCES>                                         0
<INVENTORY>                                    114,790
<CURRENT-ASSETS>                               268,389
<PP&E>                                          71,752
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                 462,715
<CURRENT-LIABILITIES>                           54,009
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           445
<OTHER-SE>                                     396,928
<TOTAL-LIABILITY-AND-EQUITY>                   462,715
<SALES>                                        281,919
<TOTAL-REVENUES>                               281,919
<CGS>                                          166,003
<TOTAL-COSTS>                                   59,615
<OTHER-EXPENSES>                               (5,576)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 842
<INCOME-PRETAX>                                 61,035
<INCOME-TAX>                                    19,532
<INCOME-CONTINUING>                             41,503
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    41,503
<EPS-PRIMARY>                                     0.95
<EPS-DILUTED>                                     0.94
        

</TABLE>


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