MITCHAM INDUSTRIES INC
S-3/A, 1996-10-25
INDUSTRIAL MACHINERY & EQUIPMENT
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<PAGE>
                                                     Registration No. 333-10555
   
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 25, 1996
    
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington D.C. 20549
   
                              AMENDMENT NO. 1 to
    
                                   FORM S-3
           REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                                       
                           MITCHAM INDUSTRIES, INC.
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

           TEXAS                                         76-0210849
(STATE OR OTHER JURISDICTION OF            (I.R.S. EMPLOYER IDENTIFICATION NO.)
INCORPORATION OR ORGANIZATION)

                              POST OFFICE BOX 1175
                             44000 HIGHWAY 75 SOUTH
                            HUNTSVILLE, TEXAS  77342
                                 (409) 291-2277
              (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
     INCLUDING AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)

                             BILLY F. MITCHAM, JR.
                             POST OFFICE BOX 1175
                            44000 HIGHWAY 75 SOUTH
                           HUNTSVILLE, TEXAS  77342
                                (409) 291-2277
            (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
                    INCLUDING AREA CODE, OF AGENT FOR SERVICE)

                                   Copy to:
                              SABRINA A. MCTOPY
                    NORTON, JACOBS, KUHN & MCTOPY, L.L.P.
                            TEXACO HERITAGE PLAZA
                            1111 BAGBY, SUITE 2450
                          HOUSTON, TEXAS 77002-4004
                                (713) 659-1131

Approximate date of commencement of proposed sale to the public: As soon as
practicable after the Registration Statement becomes effective.

If the only securities being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box [ ]

If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, please check the following box. [X]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and list
the Securities Act registration statement number of the earlier effective
registration statement for the same offering. [ ]

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]

If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
   
                    CALCULATION OF REGISTRATION FEE
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                                         PROPOSED     PROPOSED
                                         MAXIMUM      MAXIMUM
  TITLE OF EACH               AMOUNT     OFFERING     AGGREGATE     AMOUNT OF
CLASS OF SECURITIES           TO BE       PRICE       OFFERING    REGISTRATION
 TO BE REGISTERED           REGISTERED   PER SHARE      PRICE          FEE
- -------------------------------------------------------------------------------
Common Stock, $.01 par 
value ("Common Stock"). . .  615,830    $5.875(1)   $3,618,001.20   $1,247.59
- -------------------------------------------------------------------------------
Common Stock 
Underlying Warrants . . . .  242,953    $5.875(2)   $1,427,348.80     $492.19
- -------------------------------------------------------------------------------
Total . . . . . . . . . . .                         $5,045,350.00   $1,739.78(3)
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
    
<PAGE>
   
(1)  Pursuant to Rule 457(c), the registration fee for these shares is
     calculated based upon the last sale price of the Common Stock reported on
     the Nasdaq National Market System on October 21, 1996, or $5.875 per share.

(2)  In accordance with Rule 457(g), the registration fee for these shares is
     calculated based upon a price of $5.875 per share, which is the highest of
     (i) the price at which the warrants may be exercised; (ii) the offering
     price of securities of the same class included in the registration
     statement; and (iii) the price of securities of the same class, as
     determined pursuant to Rule 457(c).

(4)  $1,506.27 of this amount was paid with the initial Registration Statement
     on Form S-3, filed on August 29, 1996.
    

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

     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.


<PAGE>
                               MITCHAM INDUSTRIES, INC.

                                CROSS REFERENCE SHEET 
                                           
                     (PURSUANT TO ITEM 501(b) OF REGULATION S-K)
                               ________________________
<TABLE>
<CAPTION>

ITEM      FORM SB-2 ITEM NUMBER AND CAPTION                  LOCATION IN PROSPECTUS
- ----      ---------------------------------                  ----------------------
<S>       <C>                                                <C>
1.        Forepart of the Registration Statement and
          Outside Front Cover Page of Prospectus............  Facing Page; Outside Front Cover of Prospectus

2.        Inside Front and Outside Back Cover Pages
          of Prospectus ....................................  Inside Front Cover Page; Outside Back Cover Page

3.        Summary Information, Risk Factors and 
          Ratio of Earnings to Fixed Charges ...............  The Company; Risk Factors

4.        Use of Proceeds...................................  Not Applicable

5.        Determination of Offering Price...................  Not Applicable

6.        Dilution .........................................  Not Applicable

7.        Selling Security Holders .........................  Selling Security Holders

8.        Plan of Distribution..............................  Outside Front Cover Page; Plan of Distribution

9.        Description of Securities to be Registered........  Not Applicable

10.       Interests of Named Experts and Counsel............  Legal Matters

11.       Material Changes..................................  Not Applicable

12.       Incorporation of Certain Information by
          Reference.........................................  Documents Incorporated by Reference

13.       Disclosure of Commission Position On 
          Indemnification for Securities Act Liabilities....  Not Applicable
</TABLE>

<PAGE>

                                                                      PROSPECTUS


                                    858,783 SHARES

                               MITCHAM INDUSTRIES, INC.

                                     COMMON STOCK
                                  ($0.01 PAR VALUE)

                                 -------------------
   
     This Prospectus relates to 858,783 shares of common stock, par value $0.01
per share (the "Common Stock"), of Mitcham, Industries, Inc., (the "Company")
which may be offered and sold from time to time by security holders of the
Company (the "Selling Security Holders").  Of the total number of shares offered
hereby, 615,830 are currently outstanding shares of the Company's Common Stock
owned by certain security holders of the Company and 242,953 are issuable upon
the exercise of certain warrants to acquire Common Stock.  See "Selling Security
Holders."  The Company will not receive any of the proceeds from the sale of the
shares of Common Stock offered hereby.  However, if all of the 242,953 warrants
representing shares of Common Stock in this offering are exercised, the Company
will receive aggregate proceeds therefrom of approximately $962,000.

     The Company's Common Stock traded on the Nasdaq SmallCap Market under the
symbol "MIND" from December 19, 1994 through April 25, 1996.  The Company's
Common Stock is currently traded on the Nasdaq National Market System under the
symbol "MIND".  On October 21, 1996 the last sales price of the Company's Common
Stock was $5.875 per share.
    
     The Company Stock may be offered and sold from time to time by the Selling
Security Holders named herein through dealers or agents or directly to one or
more purchasers in fixed price offerings, in negotiated transactions, at market
prices prevailing at the time of sale or at prices related to such market
prices.  The terms of the offering and sale of Common Stock with respect to
which this Prospectus is being delivered, including any discounts, commissions
or concessions allowed, or paid to dealers or agents, the purchase price of the
shares of Common Stock, the proceeds to the Selling Security Holders, and any
other material terms shall be as set forth in a Prospectus Supplement.  See
"Plan of Distribution" for possible indemnification arrangements for dealers and
agents.

     FOR A DISCUSSION OF CERTAIN FACTORS THAT SHOULD BE CONSIDERED IN CONNECTION
WITH AN INVESTMENT IN THE COMMON STOCK, SEE "RISK FACTORS" BEGINNING ON PAGE 5.

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

       THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
          AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS
            THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
               COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
                PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY IS A 
                                   CRIMINAL OFFENSE

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






                    The date of this Prospectus is _________, 1996


<PAGE>
                                AVAILABLE INFORMATION

     The Company has filed with the Securities and Exchange Commission (the
"Commission") in Washington, D.C. a Registration Statement on Form S-3 under the
Securities Act of 1933, as amended (the "Securities Act"), with respect to the
Common Stock offered by this Prospectus.  Certain portions of the Registration
Statement have not been included in this Prospectus.  For further information,
reference is made to the Registration Statement and the exhibits thereto.  The
Company is subject to the informational requirements of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), and in accordance therewith files
reports, proxy statements and other information with the Commission.  The
Registration Statement (with exhibits), as well as such reports, proxy
statements and other information, can be inspected and copied at the public
reference facilities maintained by the Commission at its principal offices at
Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C. 20549.  Copies of such
material can be obtained at prescribed rates from the Public Reference Section
of the Commission at its principal office at Judiciary Plaza, 450 Fifth Street,
N.W., Room 1023, Washington, D.C. 20549.

                         DOCUMENTS INCORPORATED BY REFERENCE

     The Company hereby incorporates by reference in this Prospectus (i) the
Company's Annual Report on Form 10-KSB for the fiscal year ended January 31,
1996; (ii) the Company's Quarterly Report on Form 10-QSB for the six months
ended July 31, 1996; and (iii) the description of the Company's Common Stock
contained in the Company's Form SB-2, dated December 19, 1994, including any
amendments, post-effective amendments or reports filed for the purpose updating
such description.  All other reports filed by the Company pursuant to Section
13(a) or 15(d) of the Exchange Act since January 31, 1996 are hereby
incorporated herein by reference.

     All documents filed by the Company pursuant to Section 13(a), 13(c), 14 and
15(d) of the Exchange Act after the date of this Prospectus and before the
termination of the offering covered hereby will be deemed to be incorporated by
reference in this Prospectus and to be a part hereof from the date of filing of
such documents.  Any statement contained in a document incorporated or deemed to
be incorporated by reference in this Prospectus shall be deemed to be modified
or superseded for purposes of this Prospectus to the extent that a statement
contained in this Prospectus or in any other subsequently filed document which
also is or is deemed to be incorporated by reference modifies or replaces such
statement.

     The Company will provide without charge to each person to whom this
Prospectus is delivered, upon the written or oral request of such person, a copy
of any or all of the documents incorporated by reference in this Prospectus,
other than exhibits to such documents, unless such exhibits are specifically
incorporated by reference into the information that this Prospectus
incorporates.  All such requests should be directed to Mitcham Industries, Inc.,
Post Office Box 1175, 44000 Highway 75 South, Huntsville, Texas 77342,
Attention: Roberto Rios, telephone number (409) 291-2277.




                                       2

<PAGE>


                                  PROSPECTUS SUMMARY

     THE FOLLOWING SUMMARY IS QUALIFIED IN ITS ENTIRETY BY, AND SHOULD BE READ
IN CONJUNCTION WITH, THE MORE DETAILED INFORMATION CONTAINED ELSEWHERE IN THIS
PROSPECTUS.

THE COMPANY

     Mitcham Industries, Inc., a Texas corporation ("Company"), specializes in
the leasing and sale of seismic equipment to the oil and gas industry. The
Company provides short-term leasing of peripheral seismic equipment to meet a
customer's requirements, as well as offering maintenance and support during the
lease term. The Company leases its seismic equipment primarily to land-based
seismic data acquisition companies and major oil and gas exploration companies
conducting seismic data acquisition surveys in North and South America. The
Company also sells and services new and used seismic data acquisition systems
and peripheral equipment to companies engaged in oil and gas exploration.

     Seismic data acquisition equipment is used in the identification and
graphic definition of subsurface geologic structures and formations which
potentially contain oil and gas.  Since the mid-1980s, the oil and gas industry
has evolved from utilizing seismic data using two-dimensional ("2-D") seismic
surveys to utilizing three-dimensional ("3-D") surveys.  Three-dimensional
seismic data, although more costly than 2-D data, is believed to provide greatly
enhanced information regarding subsurface geology, resulting in improved
drilling success rates and reduced exploration costs. The production of this
enhanced information requires the use of a greater number of remote signal
conditioners, or "channel boxes," which collect and transmit seismic data, and
of various other types of peripheral seismic equipment to support the additional
channel boxes. Management believes that 3-D seismic surveys will continue to
increase in importance and become the dominant seismic data acquisition
technique in the oil and gas industry.
   
     The Company's strategy is to respond to its customers' short-term demand 
for additional 3-D channel boxes and supporting peripheral equipment by 
expanding its 3-D seismic leasing operations. Historically, a majority of the 
Company's operations were focused on the sale and service of 2-D seismic 
equipment of various manufacturers. Given the expense of 3-D channel boxes 
and other peripheral equipment, management believes that seismic survey firms 
will increasingly engage in short-term leasing of such equipment as an 
alternative to purchasing it. In response to this trend, in February 1994, 
the Company entered into an agreement with Input/Output, Inc. ("I/O"), a 
designer and manufacturer of technologically advanced, land-based 3-D seismic 
data acquisition equipment and systems. Under this agreement, as amended (the 
"I/O Agreement"), the Company is the exclusive recipient of requests I/O 
receives from its customers to lease I/O 3-D channel boxes in North and South 
America subject to certain conditions, including certain minimum purchase 
requirements, and may acquire I/O 3-D channel boxes at favorable prices based 
on the volume of equipment purchased.  Since entering into the I/O Agreement 
and acquiring I/O 3-D seismic equipment, the Company has changed its business 
focus from the leasing and sale of 2-D seismic equipment to the lease of 3-D 
seismic equipment, with a primary emphasis on channel boxes.
    
     As of June 1, 1996, the Company had purchased approximately $7.9 million of
the required $10.0 million of I/O 3-D channel boxes under the I/O Agreement, and
was required to purchase an additional $2.1 million of channel boxes on or
before December 31, 1996.  Effective June 1, 1996, the Company entered into an
amendment of its Exclusive Lease Referral Agreement with I/O.  Under the I/O
Agreement as amended, (i) the term has been extended until May 31, 2000; (ii)
the seismic data acquisition equipment that I/O will sell to the Company and
with respect to which I/O will recommend the Company as a potential lessor has
been expanded; and (iii) the former $10.0 million has been replaced with an
aggregate $13.25 minimum purchase requirement over the remaining term of the
Agreement.
   
     In September 1996, the Company entered into two agreements with SERCEL, 
S.A. ("SERCEL") a designer and manufacturer of land/shallow water seismic 
data acquisition systems and related equipment.  One agreement, the Exclusive 
Equipment Lease Agreement (the "SERCEL Lease Agreement"), provides that until 
December 31, 1999, the Company will be SERCEL's short-term leasing agent 
throughout the world and that SERCEL will refer to the Company all requests 
it receives from its customers to lease its 3-D data acquisition equipment 
and other field

                                      3
<PAGE>

equipment; and the Company will acquire up to $10.2 million of SERCEL's 3-D 
data acquisition equipment and other field equipment from SERCEL at favorable 
prices, $800,000 of which will consist of SERCEL's existing lease pool of 
primarily 3-D channel boxes.  The second agreement, the Commercial 
Representation Agreement, provides that until September 19, 1999, the Company 
will be SERCEL's exclusive sales agent in Canada.  In connection with 
entering into this agreement, the Company will establish an office in 
Calgary, Alberta, Canada in which up to 10 employees are anticipated to be 
employed.  These agreements with SERCEL allow the Company to expand its 
customer base and materially increase the type and amount of equipment 
available to its customers.  The SERCEL agreements are part of the Company's 
overall strategy to incorporate the equipment from all major 3-D seismic 
equipment manufacturers into its lease pool. 
    
     The Company was formed in January 1987. Its principal offices are located
at Post Office Box 1175, 44000 Highway 75 South, Huntsville, Texas, and its
telephone number is (409) 291-2277.





                                      4


<PAGE>
                                     RISK FACTORS
     
     IN ADDITION TO THE OTHER INFORMATION CONTAINED IN THIS PROSPECTUS, 
POTENTIAL INVESTORS SHOULD CAREFULLY EVALUATE THE FOLLOWING RISK FACTORS, 
WHICH COULD HAVE A MATERIAL ADVERSE EFFECT ON THE VALUE OF THE COMPANY'S 
COMMON STOCK.

DEPENDENCE ON EXCLUSIVE LEASE REFERRAL AGREEMENT WITH INPUT/OUTPUT; 
COMPETITION FROM INPUT/OUTPUT

     While the Company will continue to sell and lease 2-D seismic equipment 
of various manufacturers, its future earnings growth is dependent upon its 
success in leasing 3-D seismic equipment of I/O and other manufacturers. Of 
critical importance to that growth is the I/O Agreement, entered into in 
February, 1994, pursuant to which the Company (i) is the exclusive recipient 
of requests from I/O customers and others to lease I/O channel boxes in North 
and South America; and (ii) may acquire channel boxes from I/O at favorable 
prices based upon the volume of equipment purchased.  As a manufacturer of 
complete data acquisition systems that are compatible only with I/O channel 
boxes, I/O typically receives significant inquiries to lease I/O 3-D channel 
boxes from customers desiring to expand the capacities of their systems on a 
short-term basis.  In order to continue to receive the above benefits under 
the I/O Agreement, except as otherwise provided therein, the Company must 
meet certain minimum purchase requirements of I/O 3-D channel boxes.  

     In order to receive the benefits of the I/O Agreement, the Company was 
formerly required to purchase an aggregate of $10.0 million of I/O 3-D 
channel boxes in stated installments over the term of the agreement, which 
was to terminate on December 31, 1996 (the "Termination Date").  As of June 
1, 1996, the Company had purchased approximately $7.9 million of the required 
$10.0 million of I/O 3-D channel boxes under the I/O Agreement, and was 
required to purchase an additional $2.1 million of channel boxes on or before 
the Termination Date.  Effective June 1, 1996, the Company entered into an 
amendment of the I/O Agreement.

     Under the I/O Agreement as amended, (i) the term has been extended until 
May 31, 2000; (ii) the seismic data acquisition equipment that I/O will sell 
to the Company and with respect to which I/O will recommend the Company as a 
potential lessor has been expanded; and (iii) the former aggregate minimum 
purchase requirement of $10.0 million no longer applies.  The other 
provisions of the I/O Agreement remain substantially the same.  

     In addition to I/O 3-D channel boxes that were the subject of the 
agreement before the amendment, the I/O Agreement now covers (i) ocean bottom 
cable systems, which collect seismic data in an ocean environment in depths 
of up to 200 meters; (ii) central electronics units, which act as the control 
center of and test all functions of complete data acquisition systems; and 
(iii) remote acquisition modules, field communication devices between channel 
boxes and central electronics units that allow more channel boxes to be 
employed in a seismic survey.
   
     Specifically, in place of the former aggregate $10.0 million of required 
purchases, the Company agreed to purchase an aggregate of $3.0 million of I/O 
3-D channel boxes after June 1, 1996 and before November 30, 1996 (the 
"Renewal Purchase"), with a minimum of $1.5 million to be purchased by August 
31, 1996. From January 1, 1997 through May 31, 1997, the Company must 
purchase at least an aggregate of $1.25 million of I/O seismic equipment in 
order to receive favorable pricing with respect to such equipment.  In each 
of the years from June 1, 1997 through May 31, 1998, June 1 through May 31, 
1999 and June 1, 1999 through May 31, 2000, the Company must purchase at 
least an aggregate of $3.0 million of I/O equipment (or an aggregate 
additional $10.25 million after the $3.0 million Renewal Purchase is made) in 
order to receive favorable pricing on such equipment.  Since June 1, 1996, 
the Company has purchased an aggregate of $4.7 million of I/O equipment, thus 
fulfilling its obligations to make the Renewal Purchase.  
    
   
     Under the I/O Agreement, subject to certain exceptions described below, 
the Company is the exclusive recipient of requests from I/O customers to 
lease I/O 3-D channel boxes in North and South America. I/O may not recommend 
or suggest any competitor of the Company as a potential lessor of I/O 3-D 
channel boxes in North and South America. However, if the Company (i) is 
unable to lease the 3-D channel boxes due to a shortage in its lease fleet; 
(ii) cannot agree on the terms of a proposed lease with a prospective lessee 
within 72 hours of the lessee's introduction to the Company; or (iii) 
otherwise chooses not to lease to a prospective lessee, then I/O may

                                     5
<PAGE>

lease channel boxes to the prospective lessee. Leases of channel boxes with 
purchase options are specifically excluded from the I/O Agreement. Therefore, 
I/O may continue to enter into leases with purchase options in North and 
South America during the term of the I/O Agreement. Channel boxes which I/O 
owned and which were subject to lease at the date of the I/O Agreement are 
also specifically excluded from the I/O Agreement. However, as of the date of 
this Prospectus, substantially all of those channel boxes have been acquired 
by the Company and others. After the remaining 3-D channel boxes owned by I/O 
and subject to lease at the date of the I/O Agreement are acquired, I/O 
cannot compete with the Company in North and South America except as 
described above. 
    
DEPENDENCE UPON INPUT/OUTPUT

     In connection with the Company's decision to concentrate its business 
focus primarily upon 3-D seismic leasing and enter into the I/O Agreement, 
the Company has relied upon I/O to manufacture and sell to the Company the 
I/O 3-D seismic equipment which the Company leases to its customers and, to a 
lesser extent, to refer leasing customers to the Company. As a result, I/O 
has the ability to adversely affect the 3-D seismic leasing portion of the 
Company's business. While the Company does not anticipate any difficulty in 
obtaining channel boxes or lease referrals from I/O based upon its past 
experience and current relationship with I/O, any such occurrence could have 
a material adverse effect upon the Company's business, financial condition 
and results of operations.  In addition, by entering into the I/O Agreement, 
and engaging in cooperative advertising with I/O with respect to I/O 3-D 
channel boxes, the Company has undertaken to establish an identity connected 
with I/O.  As such, any adverse economic condition of I/O or negative 
operating results for I/O or even negative publicity about I/O or its 
products, could in turn adversely affect the Company's business, financial 
condition and results of operations.  Conversely, the Company has no ability 
to affect I/O's operations or results of operations. As a result of entering 
into the SERCEL Lease Agreement, the Company is no longer solely dependent 
upon I/O to supply 3-D seismic equipment to the Company at favorable prices, 
as well as customer lease referrals.  However, because of the Company's close 
association with I/O, the Company's business and financial condition could 
still be materially adversely affected by any financial or operating 
difficulty experienced by I/O.

DEPENDENCE UPON ADDITIONAL LEASE CONTRACTS; UNCERTAIN FUTURE RESULTS

     The Company's operating risks occur primarily in its equipment leasing 
business. The Company's leases typically have a term of three to nine months 
and provide gross revenues equal to 20% to 80% of the acquisition cost of the 
new equipment, thereby recovering only a portion of the Company's capital 
investment. The Company's ability to generate lease revenues, and thus its 
profitability, is dependent upon obtaining additional lease contracts after 
the termination of an initial lease. However, lessees are under no obligation 
to, and frequently do not, continue to lease seismic equipment after the 
expiration of a lease. Although the Company has been successful in obtaining 
additional lease contracts with other lessees after the termination of 
three-to-nine month equipment leases, there can be no assurance that it will 
continue to do so. The Company's failure to obtain additional or extended 
leases beyond the initial term would have a material adverse effect on its 
operations and financial condition. 

POTENTIAL LIABILITY EXPOSURE; POSSIBILITY OF INADEQUATE COVERAGE

     The Company maintains general liability insurance coverage for potential 
claims, the nature and amount of which it believes is customary in the 
industry. There is no assurance that adequate insurance will be available to 
the Company in the future on terms as favorable as those contained in its 
existing arrangements. The Company's lease equipment is covered by a minimum 
of $1,000,000 general liability and actual loss coverage when under lease. 
This insurance is paid for by the Company's lessees and the Company receives 
certification that it has been named as additional insured and loss payee on 
lessees' policies prior to delivery of equipment. Thus, the Company's lessees 
bear the risk of loss or damage to leased equipment during the lease term. 

POSSIBLE ADVERSE EFFECT OF INSTABILITY OF OIL AND GAS INDUSTRY AND DEMAND FOR
SERVICES

     Demand for the Company's services depends upon the level of spending by 
oil and gas companies for exploration, production, and development 
activities, as well as on the number of land seismic crews operating in the 
world, and especially in North America. Fluctuations in the price of oil and 
gas in response to relatively minor changes in the supply and demand for oil 
and natural gas continue to have a major effect on these activities and


                                     6
<PAGE>
   
thus, on the demand for the Company's services. Published industry sources 
indicate that the number of seismic crews working worldwide has declined from 
approximately 1,500 in 1988 to 1,214 as of July 1, 1996.  Likewise, those 
sources indicate that the number of seismic crews working in North America 
has declined from 300 in 1988 to 140 as of July 1, 1996. The Company believes 
that the number of active crews will continue to decline through the year 
2000, but it anticipates that the total amount of 3-D seismic equipment in 
use by those crews and the number of channels required for seismic surveys will
continue to increase in an effort to increase drilling success rates and 
decrease exploration costs. There can be no assurance of an increased demand f
or additional 3-D seismic equipment or as to the level of future demand for 
the Company's services. 

VULNERABILITY TO WEATHER CONDITIONS AND SEASONAL RESULTS

     The third and fourth quarters of the calendar year have historically 
accounted for, and are expected in the future to account for, a greater 
portion of the Company's operating revenue than do the first and second 
quarters of the calendar year.  This fluctuation in revenues is primarily due 
to the increased seismic survey activity in Canada from October through 
March, which significantly affects the Company because about one-half of the 
Company's total revenues are historically attributable to Canadian 
operations.  This seasonal pattern, may cause the Company's results of 
operations to vary significantly from quarter to quarter.  Accordingly, 
period-to-period comparisons are not necessarily meaningful and should not be 
relied on as indicative of future results.
    
TRANSACTIONS WITH AFFILIATES
   
     The Company has had several transactions with affiliates, including a 
consulting agreement. In particular, until September 1995 the Company was 
leasing its facilities from an affiliate at approximately twice the cost per 
square foot being paid by an unrelated third party for adjacent facilities. 
In September 1995 the Company purchased the facilities in an arm's-length 
transaction. Other than with respect to such lease, management of the Company 
believes that the terms of such transactions are reasonable and fair. 
However, in no case has an independent determination as to the fairness been 
made and the affiliates have no fiduciary obligation to the Company. 
Therefore, such transactions may be subject to self-dealing by affiliates.
    
TECHNOLOGICAL OBSOLESCENCE

     The Company has a substantial capital investment in 3-D seismic equipment.
In addition, under the I/O Agreement, the Company is required to make a
substantial additional investment in I/O 3-D seismic equipment.  The Company
believes that the technology represented by the 3-D equipment in service and to
be acquired from I/O will not become obsolete prior to the Company's recovery of
its initial investment. However, there can be no assurance that manufacturers of
seismic equipment will not develop alternative systems that would have
competitive advantages over systems now in use, thus having potentially adverse
affects on the Company's ability to profitably lease its existing 3-D seismic
equipment. In the past, the Company has been successful in avoiding material
losses caused by technological obsolescence by selling its older technology 2-D
seismic equipment in the international market and, to a lesser extent, to
smaller seismic survey firms in the domestic market. However, there can be no
assurance that the Company will be able to sell technologically obsolete
equipment in the future. 

CUSTOMER CONCENTRATION

     The Company typically sells and leases significant amounts of seismic
equipment to a relatively small number of customers, the composition of which
changes from year to year as leases are negotiated and concluded and equipment
needs vary. Therefore, at any one time, a large portion of the Company's
revenues may be derived from a limited number of customers. In the years ended
January 31, 1995 and January 31, 1996, one customer accounted for approximately
16% and 18%, respectively, of the Company's total revenues. The termination of
any large seismic lease could have a material adverse effect on the Company's
operations if the Company does not replace such business on a timely basis. 
   
NEED FOR ADDITIONAL FINANCING

     Under the I/O Agreement, as amended, the Company is required to purchase a
total of $13.25 million, or an additional $8.55 million, of I/O equipment by May
31, 2000. In addition, under the terms of the SERCEL Lease 
    
                                       7

<PAGE>
   
Agreement, the Company will acquire up to $10.2 million of SERCEL's seismic 
data acquisition equipment at favorable prices over the term thereof.  
Specifically, the Company has agreed to the following minimum purchases 
through December 31, 1999:

               September 20, 1996 through June 30, 1997 - $1.7 million
               July 1, 1997 through December 31, 1997   - $1.7 million
               January 1, 1998 through June 30, 1998    - $1.7 million
               July 1, 1998 through December 31, 1998   - $1.7 million
               January 1, 1999 through June 30, 1999    - $1.7 million
               July 1, 1999 through December 31, 1999   - $1.7 million

As of the date of this Prospectus, the Company has acquired $800,000 of seismic
data acquisition equipment, and must purchase an additional $9.4 million of such
equipment. 

     The Company anticipates that the cash flow generated from the 3-D channel
boxes which it currently owns, the available portions of its $1.0 million line
of credit with a bank and its $4.2 million term loan with a bank, and all or a
portion of the approximately $4.2 million aggregate proceeds it has received
from the exercise of the public warrants, certain bridge warrants, and
representative's warrants issued to the representative of the underwriters in
the Company's initial public offering in January 1995, will be used to fund in
part the remaining aggregate $8.55 million and $9.4 million of subsequent
minimum purchases required over the term of the I/O Agreement and the SERCEL
Lease Agreement, respectively.  However, the Company anticipates that it may
require additional equipment loans in order to fully fund those minimum purchase
requirements.  There can be no assurance that the Company will be able to obtain
such equipment financing loans on terms acceptable to the Company, if at all. 
Failure to meet the minimum purchase requirement in one or more periods would
mean the loss of favorable pricing provided for by the I/O Agreement and the
SERCEL Lease Agreement, which would have a material adverse effect on the
Company's future operations and profits. 
    
COMPETITION
   
     Competition in the leasing of seismic equipment is fragmented, and the 
Company is aware of numerous companies that engage in such equipment leasing. 
Many of these competitors, however, do not lease seismic equipment of several 
manufacturers, have as extensive seismic lease pool as does the Company or 
offer maintenance and support during the lease term. They also do not have 
exclusive lease referral agreements with manufacturers similar to the Company's.
Competition exists to a lesser extent from seismic data acquisition firms 
seeking to generate revenue from equipment that is temporarily idle. Under 
the I/O Agreement, I/O and its subsidiary, Global Charter Corporation 
(``Global'') retain the right to continue to (i) lease channel boxes in 
certain situations where the Company and a prospective lessee cannot or do 
not enter into a lease, as more fully described in the I/O Agreement; (ii) 
lease channel boxes with a purchase option in North and South America and 
(iii) lease the channel boxes owned by either of them and subject to lease on 
the date of the I/O Agreement. However, as of the date of this Prospectus, 
substantially all of the latter channel boxes have been acquired by the 
Company and others. After the remaining 3-D channel boxes owned by I/O and 
subject to lease at the date of the I/O Agreement are acquired, I/O cannot 
compete with the Company in North and South America except as described 
above. The Company has several competitors engaged in seismic equipment 
sales, including land-based seismic data acquisition companies and major oil 
and gas exploration companies that use seismic equipment, many of which have 
substantially greater financial resources than the Company. There are also 
numerous smaller competitors who, in the aggregate, generate significant 
revenue from the sale of seismic survey equipment. 
    
DEPENDENCE ON KEY PERSONNEL

     The Company's success is dependent on, among other things, the services of
Billy F. Mitcham, Jr., the Chairman of the Board, President and Chief Executive
Officer of the Company. In May 1994, the Company entered into an employment
agreement with Mr. Mitcham for a term of three years, subject to earlier
termination upon certain stated events. Under the employment agreement, the
Company agreed to pay Mr. Mitcham an annual salary of $100,000, subject to
increase by the Company's Board of Directors. The employment agreement prohibits
Mr.


                                       8

<PAGE>

Mitcham from providing services to, and from contacting or soliciting in an 
effort to provide services to, any competitor of the Company for two years 
after the termination of his employment. The Company has obtained a $1.0 
million key employee life insurance policy payable to the Company in the 
event of Mr. Mitcham's death. The loss of the services of Mr. Mitcham could 
have a material adverse effect on the Company. 

   
CONTROL BY PRINCIPAL SHAREHOLDER

     As of the date of this Prospectus, Billy F. Mitcham, Jr. owned and had
voting control of approximately 15.4% and 30%, respectively, of the outstanding
shares of Common Stock.  After the consummation of the offering, he will own and
have voting control of approximately 8.9% and 23%, respectively, of the
outstanding shares of Common Stock.  It should be assumed that, although Mr.
Mitcham does not own a majority interest, he will exercise effective voting
control over most corporate actions that require shareholder approval, and may
therefore exercise a controlling influence over the Company. 
    

NO DIVIDEND HISTORY

     The Company has never paid cash dividends on its Common Stock. The Company
does not presently anticipate paying any cash dividends on the Common Stock in
the foreseeable future. 

POSSIBLE ADVERSE EFFECT OF ISSUANCE OF PREFERRED STOCK WITHOUT SHAREHOLDER
APPROVAL 

     The Company's Articles of Incorporation authorize the issuance of 1,000,000
shares of "blank check" preferred stock, par value $1.00 per share
("Preferred Stock") with such designations, rights and preferences as may be
determined from time to time by the Board of Directors. No shares of Preferred
Stock will be outstanding as of the consummation of this Offering. However,
because the Board of Directors is empowered to issue Preferred Stock with such
preferences and rights as it determines, it may afford the holders of any series
of Preferred Stock preferences, rights or voting powers superior to those of the
holders of Common Stock. Although the Company has no present intention to issue
any shares of its Preferred Stock, there can be no assurance that the Company
will not do so in the future.

LIMITATION ON DIRECTOR LIABILITY

     The Company's Articles of Incorporation, as amended, provide, as permitted
by governing Texas law, that a director of the Company shall not be personally
liable to the Company or its shareholders for monetary damages for breach of
fiduciary duty as a director, with certain exceptions. These provisions may
discourage shareholders from bringing suit against a director for breach of
fiduciary duty and may reduce the likelihood of derivative litigation brought by
shareholders on behalf of the Company against a director.


                                     9
<PAGE>

                               SELLING SECURITY HOLDERS

     The following table sets forth the name of each Selling Security Holder and
the number of shares of Common Stock being offered by each Selling Security
Holder.  The shares of Common Stock being offered hereby are being registered to
permit public secondary trading, and the Selling Security Holders may offer all
or a portion of the shares for resale from time to time.  See "Plan of
Distribution."

   
<TABLE>
<CAPTION>
                                      SHARES                     SHARES        PERCENTAGE 
                                    BENEFICIALLY               BENEFICIALLY    BENEFICIALLY
                                      OWNED                      OWNED           OWNED    
                                      BEFORE       SHARES        AFTER           AFTER    
NAME                                 OFFERING      OFFERED      OFFERING       OFFERING+  
- ----                                 --------      -------      --------       ---------
<S>                                 <C>           <C>           <C>             <C>

Billy F. Mitcham, Jr. . . . . . .   1,355,062(1)   300,000      1,055,062         23%

Billy F. Mitcham III, Trust . . .      45,981(2)     8,721        37,260           *

Benjamin R. Mitcham Trust . . . .      45,981(2)     8,721        37,260           *

Roberto Rios  . . . . . . . . . .      12,772(3)    12,772          --             --

William J. Sheppard . . . . . . .      12,772(3)    12,772          --             --

Alamo Atlas Group, Inc. . . . . .     148,597(4)   148,597          --             --

Thomas M. Hunt  . . . . . . . . .         929          929          --             --

Dan D. Sudduth  . . . . . . . . .      17,030(5)    17,030          --             --

Milton Barbarosh  . . . . . . . .       3,230(5)     3,230          --             --

Carl L. Norton  . . . . . . . . .      40,530(5)    40,530          --             --

Heptagon Investments Limited. . .       3,750        3,750          --             --

OVH, Inc. . . . . . . . . . . . .      12,000       12,000          --             --

Marathon Holding Corporation. . .       1,751        1,751          --             --

Margolis Holding Corporation. . .       1,750        1,750          --             --

Jeffrey E. Margolis . . . . . . .       1,749        1,749          --             --

Sabrina A. McTopy . . . . . . . .       6,381        6,381          --             --

Robert T. Kirk  . . . . . . . . .     154,500(6)   154,500          --             --

Glen Desort . . . . . . . . . . .      39,000(6)    39,000          --             --

Michael Morrisett . . . . . . . .       6,100(6)     6,100          --             --

Jack Gilbert  . . . . . . . . . .       6,000(6)     6,000          --             --

Ken Kamen . . . . . . . . . . . .       6,000(6)     6,000          --             --

Brian Herman  . . . . . . . . . .       6,000(6)     6,000          --             --

Wendy Tand Gusrae . . . . . . . .      25,500(6)    25,500          --             --

The Equity Group, Inc.  . . . . .      35,000(7)    35,000          --             --

          TOTAL                     1,988,365      858,783      1,129,582          23%

</TABLE>
    
_______________


                                       10
<PAGE>

 +   Assumes no shares are effected by the Selling Security Holder during the
     offering period other than pursuant to this Registration Statement.

 *   Less than 1%

(1)  Includes an aggregate of 445,740 shares of Common Stock owned by Billy F.
     Mitcham, Sr. (242,540 shares), Paul C. Mitcham (118,680 shares) and two
     trusts established for the benefit of Mr. Mitcham, Jr.'s sons (37,260
     shares for each trust), and as to which shares Mr. Mitcham, Jr. has the
     right to vote under a Voting Agreement. Also includes shares underlying
     currently exercisable options to purchase an aggregate of 200,692 shares of
     Common Stock, as follows: Billy F. Mitcham, Jr. (116,000 shares), Billy F.
     Mitcham, Sr. (45,750 shares), Paul C. Mitcham (21,500 shares), and the two
     trusts (8,721 shares each).

(2)  Represents 37,260 shares that are included in the number of shares
     beneficially owned by Billy F. Mitcham, Jr. and 8,721 shares that may be
     acquired upon the exercise of a warrant at an exercise price of $3.87 per
     share.

(3)  Includes 2,422 shares that may be acquired upon the exercise of a warrant
     at an exercise price of $3.87 per share.

(4)  Includes 31,977 shares that may be acquired upon the exercise of a warrant
     at an exercise price of $3.87 per share.

(5)  Includes or represents 3,230 shares that may be acquired upon the exercise
     of a warrant at an exercise price of $3.87 per share.

(6)  Includes or represents shares that may be acquired upon the exercise of an
     aggregate of 29,500 Representative's Warrants and 85,000 Underlying
     Representative's Warrants issued in the Company's initial public offering
     in January 1995.  Each Representative's Warrant entitles the holder to
     purchase a unit at an exercise price of $7.97 per unit, consisting of two
     shares of Common Stock and an Underlying Representative's Warrant to
     purchase an additional share of Common Stock at an exercise price of $4.20
     per share.

(7)  Represents shares that may be acquired upon the exercise of warrants at an
     exercise price of $3.50 per share.

                                 PLAN OF DISTRIBUTION

     The Selling Security Holders may offer the shares of Common Stock subject
to this Prospectus from time to time in one or more offerings through dealers or
agents or directly to one or more purchasers in fixed price offerings, in
negotiated transactions, at market prices prevailing at the time of sale or at
prices related to such market prices.  Resales by the purchasers of such shares
may be made in the same manner.

     The distribution of the shares of Common Stock by the Selling Security
Holders, or by transferees of the Selling Security Holders, may be effected from
time to time in one or more transactions (which may involve block transactions)
in the over-the-counter market, in negotiated transactions or in a combination
of such methods of sale, at fixed prices, at market prices prevailing at the
time of sale, at prices related to such prevailing market prices, or at
negotiated prices.  The Selling Security Holders may effect such transactions by
selling shares of Common Stock directly to purchasers or to or through 
broker-dealers acting as principals or agents.  Such broker-dealers may 
receive compensation in the form of discounts, concessions, or commissions 
from the Selling Security Holders or the purchasers of the shares of Common 
Stock for whom such broker-dealers may act as agent, or to whom they may sell 
as principal or both (which compensation, as to a particular broker-dealer, 
may be less than or in excess of customary commissions).

     Upon the Company's being notified by a Selling Security Holder that any
material arrangement has been entered into with a broker-dealer for the sale of
shares through a block trade, special offering, exchange distributions or
secondary distribution, a supplemental Prospectus will be filed, pursuant to
Rule 424(b) under the Act, setting forth (i) the name of each Selling
Securityholder and of the participating broker-dealer(s), (ii) the number of
shares involved, (iii) the price at which such shares were sold (iv) the
commissions paid or discounts or concessions 


                                      11

<PAGE>

allowed to such broker-dealer(s), where applicable, (v) that such 
broker-dealer(s) did not conduct any investigation to verify the information 
set out in this Prospectus and (vi) other facts material to the transactions.

     The Selling Security Holders and any broker-dealers or agents who
participate in a sale of shares of Common Stock covered by this Prospectus may
be deemed to be underwriters (within the meaning of such term under the
Securities Act) of the Common Stock offered thereby.  Any commissions received
by them, as well as any proceeds from any sales as principal by them, may be
deemed to be underwriting discounts and commissions under the Securities Act. 
Unless otherwise set forth in the applicable Prospectus Supplement, such dealers
or agents may, under agreements with the Selling Security Holders, be entitled
to indemnification by the Company or the Selling Security Holders against
certain civil liabilities under the Securities Act.

     There are no contractual arrangements between or among any of the Selling
Security Holders with respect to sales of Common Stock and no Underwriter will
be acting for the Selling Security Holders.  The Company will not receive any of
the proceeds from the sale of the shares of Common Stock offered hereby. 
However, if all of warrants representing shares of Common Stock in this offering
are exercised, the Company will receive aggregate proceeds therefrom of
approximately $962,000.

                                    LEGAL MATTERS
   
     The validity of the Common Stock offered hereby will be passed on for the
Company by Norton, Jacobs, Kuhn & McTopy, L.L.P.  Members of that firm own an
aggregate of 43,681 shares of Common Stock, a warrant to acquire an additional
3,230 shares of Common Stock at $3.87 per share and warrants to acquire an
additional 50,000 shares of Common Stock at $6.43 per share.  Members of that
firm are offering an aggregate of 46,911 shares pursuant to this Prospectus. 
See "Selling Security Holders." 
    
                                       EXPERTS

     The audited financial statements incorporated by reference in this
Prospectus have been incorporated herein in reliance on the report of Hein +
Associates, LLP, independent certified public accountants, given on the
authority of such firm as experts in accounting and auditing.





                                      12


<PAGE>

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


NO DEALER, SALESMAN OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY 
INFORMATION OR TO MAKE ANY REPRESENTATION NOT CONTAINED IN, OR INCORPORATED 
BY REFERENCE IN, THIS PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION OR 
REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE 
COMPANY. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR A 
SOLICITATION OF AN OFFER TO BUY ANY OF THE SECURITIES OFFERED HEREBY IN ANY 
JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER IN SUCH 
JURISDICTION.  NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE 
HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THE 
INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE 
HEREOF, OR THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY SINCE 
SUCH DATE.

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


                                 TABLE OF CONTENTS

   
Available Information. . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
Documents Incorporated by Reference. . . . . . . . . . . . . . . . . . . . .  2
Prospectus Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
Risk Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
Selling Security Holders . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Plan of Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Legal Matters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Experts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
    



                          MITCHAM INDUSTRIES, INC.

   
                               858,783 SHARES
    
                                    OF

                                COMMON STOCK











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

                                 P R O S P E C T U S

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


                                              , 1996
                                 -------------


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


<PAGE>


                                      P A R T  II

                        INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

     Expenses payable in connection with the issuance and distribution of the
securities to be registered (other than underwriting discounts and commissions),
are estimated as follows:
   
     Securities and Exchange Commission filing fee . . . . . . . . . .  $1,740
     Printing expenses . . . . . . . . . . . . . . . . . . . . . . . .   3,500*
     Legal fees and expenses . . . . . . . . . . . . . . . . . . . . .   8,000*
     Accounting fees and expenses  . . . . . . . . . . . . . . . . . .   6,000*
     Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . .     760
                                                                       -------
          TOTAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . $20,000
                                                                       -------
                                                                       -------
    
    --------------------------
     *  Estimated

ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Article Nine of the Company's Amended and Restated Articles of
Incorporation (the "Articles") eliminates or limits the personal liability of
directors for damages for an act or omission in the director's capacity as a
director, except for (i) a breach of a director's duty of loyalty to the Company
or its shareholders; (ii) an act or omission not in good faith that constitutes
a breach of duty of the director to the Company or that involves intentional
misconduct or a knowing violation of the law; (iii) a transaction from which a
director received an improper benefit, whether or not the benefit resulted from
an action taken within the scope of the directors' office; or (iv) an act or
omission for which the liability of a director is expressly provided for by an
applicable statute.

     Article Eleven of the Articles makes mandatory the indemnification of
directors permitted under Section B of Article 2.02-1 of the Texas Business
Corporation Act ("TBCA") and permits the Company to advance the reasonable
expenses of a director upon compliance with the requirements of Sections K and L
thereof.

     Article 2.02-1 of the TBCA provides as follows:

     A.  In this article:

          (1)  "Corporation" includes any domestic or foreign predecessor entity
     of the corporation in a merger, consolidation, or other transaction in
     which the liabilities of the predecessor are transferred to the corporation
     by operation of law and in any other transaction in which the corporation
     assumes the liabilities of the predecessor but does not specifically
     exclude liabilities that are the subject matter of this article.

          (2)  "Director" means any person who is or was a director of the
     corporation and any person who, while a director of the corporation, is or
     was serving at the request of the corporation as a director, officer,
     partner, venturer, proprietor, trustee, employee, agent, or similar
     functionary of another foreign or domestic corporation, partnership, joint
     venture, sole proprietorship, trust, employee benefit plan, or other
     enterprise.

          (3)  "Expenses" include court costs and attorneys' fees.

          (4)  "Official capacity" means

               (a)  when used with respect to a director, the office of director
                    in the corporation, and 

               (b)  when used with respect to a person other than a director,
                    the elective or appointive office in the corporation held by
                    the officer or the employment or agency relationship
                    undertaken by the employee or agent in behalf of the
                    corporation, but 

<PAGE>

               (c)  in both Paragraphs (a) and (b) does not include service for
                    any other foreign or domestic corporation or any
                    partnership, joint venture, sole proprietorship, trust,
                    employee benefit plan, or other enterprise.

          (5)  "Proceeding" means any threatened, pending, or completed action,
     suit, or proceeding, whether civil, criminal, administrative, arbitrative,
     or investigative, any appeal in such an action, suit, or proceeding, and
     any inquiry or investigation that could lead to such an action, suit, or
     proceeding.

     B.  A corporation may indemnify a person who was, is or is threatened to be
a made a named defendant or respondent in a proceeding because the person is or
was a director only if it is determined in accordance with Section F of this
article that the person:

          (1)  conducted himself in good faith;

          (2)  reasonably believed:

               (a)  in the case of conduct in his official capacity as a
                    director of the corporation, that his conduct was in the
                    corporation's best interests; and

               (b)  in all other cases, that his conduct was at least not
                    opposed to the corporation's best interests; and

          (3)  in the case of any criminal proceeding, had no reasonable cause
     to believe his conduct was unlawful.

     C.  Except to the extent permitted by Section E of this article, a director
may not be indemnified under Section B of this article in respect of a
proceeding:
     
          (1) in which the person is found liable on the basis that personal
     benefit was improperly received by him, whether or not the benefit resulted
     from an action taken in the person's official capacity; or
          
          (2) in which the person is found liable to the corporation.

     D.  The termination of a proceeding by judgment, order, settlement, or
conviction, or on a plea of nolo contendere or its equivalent is not of itself
determinative that the person did not meet the requirements set forth in Section
B of this article.  A person shall be deemed to have been found liable in
respect of any claim, issue or matter only after the person shall have been so
adjudged by a court of competent jurisdiction after exhaustion of all appeals
therefrom.

     E.  A person may be indemnified under Section B of this article against
judgments, penalties (including excise and similar taxes), fines, settlements,
and reasonable expenses actually incurred by the person in connection with the
proceeding; but if the person is found liable to the corporation or is found
liable on the basis that personal benefit was improperly received by the person,
the indemnification (1) is limited to reasonable expenses actually incurred by
the person in connection with the proceeding and (2) shall not be made in
respect of any proceeding in which the person shall have been found liable for
willful or intentional misconduct in the performance of his duty to the
corporation.

     F.  A determination of indemnification under Section B of this article must
be made:

          (1)  by a majority vote of a quorum consisting of directors who at the
     time of the vote are not named defendants or respondents in the proceeding;

          (2)  if such a quorum cannot be obtained, by a majority vote of a
     committee or the board of directors, designated to act in the matter by a
     majority vote of all directors, consisting solely of two or more directors
     who at the time of the vote are not named defendants or respondents in the
     proceeding;





                                   II-2

<PAGE>

          (3)  by special legal counsel selected by the board of directors of a
     committee of the board by vote as set forth in Subsection (1) or (2) of
     this section, or if such a quorum cannot be obtained and such a committee
     cannot be established, by a majority vote of all directors; or

          (4)  by the shareholders in a vote that excludes the shares held by
     directors who are named defendants or respondents in the proceeding.

     G.  Authorization of indemnification and determination as to reasonableness
of expenses must be made in the same manner as the determination that
indemnification is permissible, except that if the determination that
indemnification is permissible is made by special legal counsel, authorization
of indemnification and determination as to reasonableness of expenses must be
made in the manner specified by Subsection (3) of Section F of this article for
the selection of special legal counsel.  A provision obtained in the articles of
incorporation, the bylaws, a resolution of shareholders or directors, or an
agreement that makes mandatory the indemnification permitted under Section B of
this article shall be deemed to constitute authorization of indemnification in
the manner required by this section even though such provision may not have been
adopted or authorized in the same manner as the determination that
indemnification is permissible.

     H.  A corporation shall indemnify a director against reasonable expenses
incurred by him in connection with a proceeding in which he is a named defendant
or respondent because he is or was a director if he has been wholly successful,
on the merits or otherwise, in the defense of the proceeding.

     I.  If, in a suit for the indemnification required by Section H of this
article, a court of competent jurisdiction determines that the director is
entitled to indemnification under that section, that court shall order
indemnification and shall award to the director the expenses incurred in
securing the indemnification.

     J.  If, upon application of a director, a court of competent jurisdiction
determines, after giving any notice the court considers necessary, that the
director is fairly and reasonably entitled to indemnification in view of all the
relevant circumstances, whether or not he has met the requirements set forth in
Section B of this article or has been adjudged liable in the circumstances
described by Section C of this article, the court may order the indemnification
that the court determines is proper and equitable; but if the person is found
liable to the corporation or is found liable on the basis that personal benefit
was improperly received by the person, the indemnification shall be limited to
reasonable expenses actually incurred by the person in connection with the
proceeding.

     K.  Reasonable expenses incurred by a director who was, is, or is
threatened to be made a named defendant or respondent in a proceeding may be
paid or reimbursed by the corporation, in advance of the final disposition of
the proceeding and without any of the determinations specified in Sections F and
G of this article, after the corporation receives a written affirmation by the
director of his good faith belief that he has met the standard of conduct
necessary for indemnification under this article and a written undertaking by or
on behalf of the director to repay the amount paid or reimbursed if it is
ultimately determined that he has not met that standard or if it is ultimately
determined that indemnification of the director against expenses incurred by him
in connection with that proceeding is prohibited by Section E of this article. 
A provision contained in the articles of incorporation, the bylaws, a resolution
of shareholders or directors, or an agreement that makes mandatory the payment
or reimbursement permitted under this section shall be deemed to constitute
authorization of that payment or reimbursement.

     L.  The written undertaking required by Section K of this article must be
an unlimited general obligation of the director but need not be secured.  It may
be accepted without reference to financial ability to make repayment. 

     M.  A provision for a corporation to indemnify or to advance expenses to a
director who was, is or is threatened to be made a named defendant or respondent
in a proceeding, whether contained in the articles of incorporation, the bylaws,
a resolution of shareholders or directors, an agreement, or otherwise, except in
accordance with Section R of this article, is valid only to the extent it is
consistent with this article as limited by the articles of incorporation, if
such a limitation exists.


                                     II-3

<PAGE>

     N.  Notwithstanding any other provision of this article, a corporation may
pay or reimburse expenses incurred by a director in connection with his
appearance as a witness or other participation in a proceeding at a time when he
is not a named defendant or respondent in the proceeding.

     O.  An officer of the corporation shall be indemnified as, and to the same
extent, provided by Sections H, I, and J of this article for a director and is
entitled to seek indemnification under those sections to the same extent as a
director.  A corporation may indemnify and advance expenses to an officer,
employee, or agent of the corporation to the same extent that it may indemnify
and advance expenses to directors under this article.

     P.  A corporation may indemnify and advance expenses to persons who are or
were not officers, employees, or agents of the corporation but who are or were
serving at the request of the corporation as a director, officer, partner,
venturer, proprietor, trustee, employee, agent, or similar functionary of
another foreign or domestic corporation, partnership, joint venture, sole
proprietorship, trust, employee benefit plan, or other enterprise to the same
extent that it may indemnify and advance expenses to directors under this
article.

     Q.  A corporation may indemnify and advance expenses to an officer,
employee, agent, or person identified in Section P of this article and who is
not a director such further extent, consistent with law, as may be provided by
its articles of incorporation, bylaws, general or specific action of its board
of directors, or contract or as permitted or required by common law.

     R.  A corporation may purchase and maintain insurance or another
arrangement on behalf of any person who is or was a director, officer, employee,
or agent of the corporation or who is or was serving at the request of the
corporation as a director, officer, partner, venturer, proprietor, trustee,
employee, agent, or similar functionary of another foreign or domestic
corporation, partnership, joint venture, sole proprietorship, trust, employee
benefit plan, or other enterprise, against any liability asserted against him
and incurred by him in such a capacity or arising out of his status as such a
person, whether or not the corporation would have the power to indemnify him
against that liability under this article.  If the insurance or other
arrangement is with a person or entity that is not regularly engaged in the
business of providing insurance coverage, the insurance or arrangement may
provide for payment of a liability with respect to which the corporation would
not have the power to indemnify the person only if including coverage for the
additional liability has been approved by the shareholders of the corporation. 
Without limiting the power of the corporation to procure or maintain any kind of
insurance or other arrangement, a corporation may, for the benefit of persons
indemnified by the corporation, (1) create a trust fund; (2) establish any form
of self-insurance; (3) secure its indemnity obligation by grant of a security
interest or other lien on the assets of the corporation; or (4) establish a
letter of credit, guaranty, or surety arrangement.  The insurance or other
arrangement may be procured, maintained, or established within the corporation
or with any insurer or other person deemed appropriate by the board of directors
regardless of whether all or part of the stock or other securities of the
insurer or other person are owned in whole or part by the corporation.  In the
absence of fraud, the judgment of the board of directors as to the terms and
conditions of the insurance or other arrangement and the identity of the insurer
or other person participating in an arrangement shall be conclusive and the
insurance or arrangement shall not be voidable and shall not subject the
directors approving the insurance or arrangement to liability, on any ground,
regardless of whether directors participating in the approval are beneficiaries
of the insurance or arrangement.

     S.  Any indemnification of or advance of expenses to a director in
accordance with this article shall be reported in writing to the shareholders
with or before the notice or waiver of notice of the next shareholders' meeting
or with or before the next submission to shareholders of a consent to action
without a meeting pursuant to Section A, Article 9.10, of this Act and, in any
case, within the 12-month period immediately following the date of the
indemnification or advance.

     T.  For purposes of this article, the corporation is deemed to have
requested a director to serve an employee benefit plan whenever the performance
by him of his duties to the corporation also imposes duties on or otherwise
involves services by him to the plan or participants or beneficiaries of the
plan.  Excise taxes assessed on a director with respect to an employee benefit
plan pursuant to applicable law are deemed fines.  Action taken or omitted by
him with respect to an employee benefit plan in the performance of his duties
for a purpose reasonably believed by


                                     II-4

<PAGE>

him to be in the interest of the participants and beneficiaries of the plan 
is deemed to be for a purpose which is not opposed to the best interests of 
the corporation.

     U.  The articles of incorporation of a corporation may restrict the
circumstances under which the corporation is required or permitted to indemnify
a person under Section H, I, J, O, P, or Q of this article.

ITEM 16.  EXHIBITS.

   
EXHIBIT                                                           SEQUENTIALLY
  NO.               IDENTIFICATION OF EXHIBITS                   NUMBERED PAGES
- -------             --------------------------                   --------------

  5     --- Opinion of Norton, Jacobs, Kuhn & McTopy, L.L.P., as to the 
            legality of the Common Stock
 10.1   --- Exclusive Lease Referral Agreement, dated May 14, 1996, 
            between the Company and Pelton Company, Inc.
 10.2   --- Exclusive Equipment Lease Agreement, effective 
            September 20, 1996, between the Company and SERCEL, S.A.
 10.3   --- Commercial Representation Agreement, effective 
            September 20, 1996, between Mitcham Canada Ltd., an 
            Alberta corporation, and Georex, Inc., acting through its 
            Sercel, Inc. division
 11     --- Subsidiaries of the Company
 24.1   --- Consent of Hein + Associates LLP 
 24.2   --- Consent of Norton, Jacobs, Kuhn & McTopy, L.L.P. (included in 
            Exhibit 5)
 25     --- Power of Attorney (included as part of the signature page of
            the Registration Statement)
    

ITEM 17.  UNDERTAKINGS.

     (a)  The undersigned Registrant hereby undertakes:

            (1)     To file, during any period in which offers or sales are
     being made, a post-effective amendment to the registration statement to
     include any prospectus required by section 10(a)(3) of the Securities Act
     of 1933 (the "Securities Act") to include any material information with
     respect to the plan of distribution not previously disclosed in the
     registration statement or any material change to such information in the
     registration statement; 

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

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

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

     (c)  Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the Registrant pursuant to the foregoing provisions, or otherwise, the
registrant 

                                     II-5

<PAGE>

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

                                     II-6

<PAGE>

                                      SIGNATURES

     IN ACCORDANCE WITH THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, AS
AMENDED, THE REGISTRANT CERTIFIES THAT IT HAS REASONABLE GROUNDS TO BELIEVE THAT
IT MEETS ALL OF THE REQUIREMENTS OF FILING ON FORM S-3 AND HAS DULY AUTHORIZED
AMENDMENT NO. 1 TO THE REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF OF THE
UNDERSIGNED, THERETO DULY AUTHORIZED IN THE CITY OF HUNTSVILLE, STATE OF TEXAS,
ON OCTOBER 23, 1996.

                                MITCHAM INDUSTRIES, INC.


                                By:   /s/ BILLY F. MITCHAM, JR.
                                   ------------------------------------
                                   BILLY F. MITCHAM, JR., CHAIRMAN OF THE 
                                   BOARD, PRESIDENT AND CHIEF EXECUTIVE OFFICER
                                   (PRINCIPAL EXECUTIVE OFFICER)


                                By:   /s/ ROBERTO RIOS
                                   ------------------------------------
                                   ROBERTO RIOS, VICE PRESIDENT-FINANCE
                                   (PRINCIPAL FINANCIAL AND ACCOUNTING OFFICER)

     IN ACCORDANCE WITH THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, AS
AMENDED, THIS AMENDMENT NO. 1 TO THE REGISTRATION STATEMENT HAS BEEN SIGNED BY
THE FOLLOWING PERSONS IN THE CAPACITIES INDICATED ON OCTOBER 23, 1996.


      SIGNATURE                      TITLE/CAPACITY
      ---------                      --------------
   /s/ BILLY F. MITCHAM, JR.         Chairman of the Board, President and Chief
- --------------------------------     Executive Officer
       BILLY F. MITCHAM, JR.

             *                       Vice President -- Operations and Director
- --------------------------------
       PAUL C. MITCHAM

   /s/ ROBERTO RIOS                  Vice President -- Finance, Secretary,
- --------------------------------     Treasurer and Director
       ROBERTO RIOS

             *                       Vice President of International Operations
- --------------------------------     and Director
        WILLIAM J. SHEPPARD

             *                       Director
- --------------------------------
        RANDAL DEAN LEWIS

* By:  /s/ BILLY F. MITCHAM, JR. 
      ----------------------------
       BILLY F. MITCHAM, JR., ATTORNEY-IN-FACT





                                   II-7


<PAGE>

                                  INDEX TO EXHIBITS

   
<TABLE>
EXHIBIT                                                                       SEQUENTIALLY
NO.                 IDENTIFICATION OF EXHIBITS                               NUMBERED PAGES
- ---                 --------------------------                               --------------
 <S>            <C>                                                           <C>

  5       --- Opinion of Norton, Jacobs, Kuhn & McTopy, L.L.P., as to the 
              legality of the Common Stock
 10.1     --- Exclusive Lease Referral Agreement, dated May 14, 1996, 
              between the Company and Pelton Company, Inc.
 10.2     --- Exclusive Equipment Lease Agreement, effective 
              September 20, 1996, between the Company and SERCEL, S.A.
 10.3     --- Commercial Representation Agreement, effective 
              September 20, 1996, between Mitcham Canada Ltd., an 
              Alberta corporation, and Georex, Inc., acting through its 
              Sercel, Inc. division
 11       --- Subsidiaries of the Company
 24.1     --- Consent of Hein + Associates LLP 
 24.2     --- Consent of Norton, Jacobs, Kuhn & McTopy, L.L.P. (included in 
              Exhibit 5)
 25       --- Power of Attorney (included as part of the signature page of the 
              Registration Statement)
</TABLE>
    


                                   II-8



<PAGE>



                        NORTON, JACOBS, KUHN & MCTOPY, L.L.P.
                                   ATTORNEYS AT LAW
                                TEXACO HERITAGE PLAZA
                                     1111 BAGBY 
                                      SUITE 2450
                                HOUSTON, TEXAS  77002
                               TELEPHONE (713) 659-1131
                                  FAX (713) 659-7341

                                   October 23, 1996



Mitcham Industries, Inc.
44000 Highway 75 South
Huntsville, Texas 77342

Gentlemen:

     We have acted as legal counsel for Mitcham Industries, Inc. (the
"Company"), a corporation organized under the laws of the State of Texas, with
respect to the Registration Statement on Form S-3 and all amendments thereto
(the "Registration Statement"), filed by the Company in connection with the
registration under the Securities Act of 1933, as amended (the "Act") of the
following:
   
      (i) 615,830 shares of Common Stock, $.01 par value per share (the "Common
          Stock");
    
     (ii) 242,953 warrants to acquire shares of Common Stock (the "Warrants").

The Common Stock and Warrants and shares of Common Stock underlying the Warrants
described above are collectively referred to herein as the "Registered
Securities."

     In connection with this opinion, we have examined originals or copies,
certified or otherwise identified to our satisfaction, of the following
documents and instruments:

     1.   Articles of Incorporation of the Company, as amended to date;

     2.   Bylaws of the Company, as amended to date;

     3.   The Registration Statement, including the Prospectus included therein;
          and

     4.   Such other instruments and documents as we have deemed necessary for
          the purpose of rendering the following opinion.

<PAGE>

Mitcham Industries, Inc.
October 23, 1996
Page 2

     In such examination, we have assumed the genuineness of all signatures and
the conformity to original documents of all documents submitted to us as
certified or photostatic copies thereof.  As to various questions of fact
material to our opinion, we have, when the relevant facts were not independently
established and to the extent we have deemed such reliance proper, relied upon
certificates of public officials and certificates and/or factual representations
of officers of the Company.

     Based upon and subject to the foregoing, it is our opinion that the
Registered Securities have been duly and validly authorized for issuance and,
when issued as described in the Registration Statement, including, in the case
of the Common Stock, for consideration at least equal to $.01 per share, will be
validly issued, fully paid and non-assessable.

     We hereby consent to the filing of this opinion with the Securities and
Exchange Commission as Exhibit 5 to the Registration Statement and further
consent to the statements made in the Registration Statement regarding our firm
and the use of our name under the heading "Legal Matters" in the Prospectus
constituting a part of such Registration Statement.

     We are licensed to practice in the State of Texas only and do not 
express any opinion as to matters governed by the laws of any jurisdiction 
other than the laws of the State of Texas (without reference to choice-of-law 
or conflict-of-law provisions, principles or decisions under Texas law, or 
under any other state, Federal or foreign law); and we have assumed 
compliance with all other laws, including, without limitation, Federal, 
foreign and other states' laws.

                              Very truly yours,

                              NORTON, JACOBS, KUHN & McTOPY, L.L.P.
   
                              /s/ NORTON, JACOBS, KUHN & McTOPY, L.L.P.
    

<PAGE>

                         EXCLUSIVE LEASE REFERRAL AGREEMENT

     This Exclusive Lease Referral Agreement (the "Agreement") is entered 
into between Mitcham Industries, Inc., a Texas corporation ("Mitcham") and 
Pelton Company, Inc., an Oklahoma corporation ("Pelton"), which parties agree 
as follows:

     1.   INTRODUCTION.  Pelton designs, manufactures and markets 
fully-configured Servo-hydraulic vibrator control systems and the components 
thereof, including Quality Control systems and global positioning equipment.  
At the present time, Pelton manufactures seismic exploration equipment and 
related peripheral equipment as described on SCHEDULE 1 (collectively the 
"Products"). Mitcham provides full service leasing services to customers in 
the oil and gas industry, including the leasing of new and used vibrator 
electronics. For good and valuable consideration, the receipt and sufficiency 
of which are hereby acknowledged for all purposes, Mitcham and Pelton agree 
to the terms set forth herein.

     2.   EXCLUSIVE AUTHORIZED THIRD PARTY LESSOR. During the term of this 
Agreement, whenever any third party contacts Pelton and inquires as to the 
possibility of leasing any of the Products anywhere in the World (the 
"Territory") then and upon each such inquiry, Pelton shall contact Mitcham 
(by telephone, fax or letter) and explain in reasonable detail the identity 
of the third party and the terms, if any, that have been discussed with 
regard to such Lease (as defined below) and Mitcham shall have the right to 
contact such third party and negotiate the terms of the proposed Lease. 
Except as set forth in Section 3 below, during the term of this Agreement, 
Pelton shall not recommend or suggest any competitor of Mitcham or any other 
third party as a source from which any of the Products may be leased in the 
Territory and Mitcham shall not recommend or suggest that third parties lease 
equipment manufactured by any competitor of Pelton in lieu of any of the 
Products.

     3.   EXCEPTIONS: RIGHT TO LEASE IN CERTAIN INSTANCES. Notwithstanding 
Section 2 above, if and in each instance where (i) the third party is 
unwilling to enter into a lease with Mitcham, or (ii) Mitcham is unwilling or 
unable to enter into a lease with the third party, then Pelton shall have the 
right to Lease the Products in the Territory to such third party. A third 
party shall be deemed to be unwilling to enter into a Lease with Mitcham if 
such third party conveys written or verbal information to an employee of 
Pelton who thereafter concludes in good faith that such third party is indeed 
unwilling to enter into Lease with Mitcham. Mitcham shall have discretion to 
accept or reject any third party referred by Pelton for Leasing in its 
discretion, as a result of (i) possessing an insufficient amount of the 
Products for Lease to such third party, (il) perceived credit risk or any 
other business-related factor, or (iii) inability to reach agreement on the 
terms of such Lease. Notwithstanding the previous sentence, Mitcham shall use 
its reasonable good faith efforts to service every third party referred by 
Pelton for Leasing. Mitcham shall be deemed to have rejected such a third 
party as a result of inability to agree on the terms of a Lease if Mitcham 
and the third party are not able to reach an agreement on such terms within 3 
working days of such third party's first contact with Mitcham with regard to 
such proposed Lease. If Pelton Leases to 


<PAGE>

such third party, then Pelton shall have the right to continue to lease to 
such third party after the term of the initial Lease between them shall 
terminate; PROVIDED, HOWEVER, that if (x) the Lease between such a third 
party and Pelton shall terminate, (y) the Leased Product is returned to 
Pelton, and (z) such third party shall later make an inquiry concerning 
Leasing of the Products, Pelton shall again follow the procedure set forth in 
Section 2 above. Pelton shall have the right to advertise their Pelton 
Systems and the Products as they deem appropriate.

     4.   PRICING AND OTHER TERMS. In no event shall either Pelton or Mitcham 
have any right to require that either of them charge any specific price or 
follow any pricing guidelines or establish or require any other specific or 
general term with regard to the Leasing of any of the Products, or the 
provision of any other good or service by either of them. The terms and 
conditions of purchases by Mitcham of the Products hereunder shall be 
governed by Pelton's standard terms and conditions, a copy of which is 
attached hereto as SCHEDULE 4; PROVIDED, HOWEVER, that in the event of any 
conflict between the terms of such terms and conditions and the terms hereof, 
the terms of this Agreement shall prevail. Pelton may update SCHEDULE 4 from 
time to time after written notice to Mitcham.

     5.   PROVISION OF CERTAIN GOODS AND SERVICES BY PELTON. Pelton hereby 
agrees that Mitcham shall have the right to send a reasonable number of its 
employees and representatives of its customers who Lease the Products from 
Mitcham to such technical, training, operations and maintenance classes as 
Pelton provides to Pelton customers who lease or purchase the Products from 
Pelton, at no tuition charge to Mitcham. Pelton will have no responsibility 
for travel, lodging, food or incidental expenses of the Mitcham attendees. 
Pelton hereby agrees to send to Mitcham such quantities of selling 
information, marketing brochures and literature regarding the Products (other 
than proprietary information) as Pelton develops and as Mitcham shall 
reasonably request in connection with its Leasing activities, at no charge to 
Mitcham.

     6.   WARRANTY AND SERVICE.

               6.1  Pelton warrants all of the Products as per Pelton's 
standard warranty terms.

               6.2  The warranty period shall begin from and after the date 
of installation of the Products, but only on the condition that such 
installation is made within 30 days from the date such Product is received by 
Mitcham.

               6.3  Pelton makes no warranties or representations whatsoever 
with respect to any non-Pelton products, however, any warranty information 
from the manufacturers of the non-Pelton products shall be passed on the 
Mitcham.

               6.4  The standard Pelton warranty is given expressly and in 
lieu of all other express or implied warranties, including a warranty of 
merchantability or fitness and in no 


                                       2

<PAGE>

event shall Pelton be liable for consequential damages resulting from the use 
of any of the Products.

               6.5  In no event shall Mitcham have any authority whatsoever, 
express or implied, to make warranties other than those provided for herein 
without prior written permission from the Pelton.

     7.   SCHEDULED MAINTENANCE OF LEASED EQUIPMENT; REPAIRS. Mitcham and 
Pelton acknowledge that third party lessees of the Products from Mitcham may 
return such Leased Products directly to Pelton after the termination of such 
Leases. In such event, Pelton shall perform its standard maintenance check of 
such Products and inform Mitcham of any necessary repairs. Mitcham shall pay 
$200 for each of the Products checked by Pelton, as well as the cost of any 
repair to such Products by Pelton, and any reasonable and ordinary freight 
and storage charges incurred by Pelton with regard to such Products.

     8.   DISCOUNTS ON CERTAIN PURCHASES. Mitcham shall receive the discounts 
set forth on SCHEDULE 5 attached hereto with regard to the full amount of any 
Pelton invoice related to any purchases by Mitcham of the Products. No 
discount shall apply to maintenance work performed by Pelton for Mitcham or 
any purchases by Mitcham of other than the Products, unless otherwise agreed 
in writing. Discounts will be calculated on a per Order basis taking into 
account the aggregate total purchases during each year of the Agreement.  The 
Agreement year begins on the anniversary of the date of this Agreement.

     9.   RIGHT TO USE NAME. Mitcham shall have the right during the Term of 
this Agreement to (i) identify itself as the exclusive third party lessor of 
the Products, and (ii) use all Pelton trademarks and tradenames related to 
the Products that Mitcham Leases to third parties in advertisements and sales 
and promotional materials; PROVIDED, HOWEVER, that Mitcham shall obtain the 
prior written approval of Pelton to any such advertisements and sales and 
promotional materials. No rights to manufacture are granted by this 
Agreement. All such Pelton trademarks and tradenames related to the Products 
are and shall remain the sole and exclusive property of Pelton, and Mitcham 
shall have no rights therein other than as specifically set forth in this 
Agreement.

     10.  RELATIONSHIP OF THE PARTIES. Neither Mitcham nor Pelton shall have 
(i) any liability for Leases or sales of any of the Products by the other, or 
(ii) any authority to control, act for or obligate the other in any way, 
except as set forth herein. This Agreement shall not be construed as creating 
an agency, partnership or joint venture between Mitcham and Pelton. Neither 
Mitcham nor Pelton (or any of their employees or representatives) shall be 
construed as an agent, consultant or employee of the other for any purpose. 
Mitcham shall not have the authority to bind Pelton in any respect, it being 
intended that Mitcham shall act as an independent contractor and not as an 
agent, with the understanding that Pelton shall not be responsible for any 
obligations and/or liabilities incurred by Mitcham in connection with its 
business activities.


                                       3

<PAGE>

     11.  TERM OF AGREEMENT. This Agreement shall be effective beginning May 
14, 1996 (the "Effective Date") and will remain in effect through December 
31, 1997 (the "Term"). Thereafter, it shall continue to be effective until 
terminated by either party by giving the other three months prior written 
notice.

     12.  NO EFFECT ON RIGHT TO SELL. This Agreement shall not be construed 
to have any effect on Pelton's rights to sell (as opposed to Lease) its 
products and services to any party. This Agreement shall not be construed to 
have any effect on Mitcham's rights to sell any products and services to any 
party.

     13.  GENERAL.

     (a)  The addresses of Mitcham and Pelton for purposes of giving any 
notice or other communication under this Agreement are as set forth below. 
Any such notice or communication shall be in writing and signed by an officer 
of Mitcham or Pelton, as applicable. Any such notice or communication shall 
be deemed to have been given (i) immediately upon physical delivery to the 
addressee and (ii) three days after such notice or communication has been 
deposited in the United States mail, addressed as set forth below, 
first-class postage prepaid, certified mail, return receipt requested.

          Mitcham:       Mitcham Industries, Inc.
                         P.O. Box 1175
                         Huntsville, Texas 77342
                         Attn: Billy F. Mitcham, Jr.


          Pelton:        Pelton Company, Inc.
                         1500 N. Waverly
                         Box 1415
                         Ponca City, Oklahoma 74602
                         Attn: Kim L. Mitchell, Chmn. & President

     Notice may be served in any other manner, including telex, telecopy, 
telegram, etc., but shall be deemed delivered and effective as of the time of 
actual delivery.

     (b)  Mitcham and Pelton represent and warrant to each other that the 
execution, delivery and performance of this Agreement have been authorized by 
all necessary corporate action, and that this Agreement is a valid and 
binding obligation of each of them, respectively. Mitcham and Pelton 
represent and warrant to each other that, to the best of their knowledge, 
neither the execution and delivery of nor the performance of this Agreement 
will conflict with or result in a breach of any (i) law or of any regulation, 
order, writ, injunction, or decree of any court or government authority of 
any country or state in which this Agreement is to be performed, or (ii) any 
agreement to which they are a party.


                                      4

<PAGE>

     (c)  This Agreement shall be governed by and construed in accordance 
with the laws of the State of Texas.

     (d)  This Agreement represents the entire agreement between Mitcham and 
Pelton with regard to the subject matter hereof, and may not be amended, 
modified or terminated except by a written document signed by duly authorized 
officers of Mitcham and Pelton.

     (e)  This Agreement may not be assigned by either party hereto; 
PROVIDED, HOWEVER, that Mitcham may assign its rights under this Agreement to 
any subsidiary or affiliate. This Agreement shall bind and be enforceable 
against the parties hereto and their respective successors and permitted 
assigns.

     14.  COMPLIANCE WITH LAWS. Mitcham and Pelton reaffirm that each shall 
comply with all applicable laws and regulations of the United States and 
jurisdictions in which the Products are located.

     15.  MITCHAM UNDERTAKINGS. Mitcham agrees:

               (a)  To use all reasonable best efforts to promote the Leasing 
     of the Products.

               (b)  To use all reasonable best efforts to continue to maintain 
     an organization commensurate with the growth of Leasing of the Products.

               (c)  To return to Pelton on termination of this Agreement any 
     and all catalogs, samples, price lists, and any other data, information 
     and/or supplies or materials furnished by Pelton which are in the 
     possession of Mitcham or any of its employees, agents, representatives 
     or bailees.

               (d)  Not to alter, hide nor secrete Pelton's name on any of the 
     Products or on any sales promotion material furnished by Pelton.

     16.  PURCHASE ORDER ACCEPTANCE AND PAYMENT.

          16.1 All sales of the Products are subject to Pelton's standard 
conditions of sale, however, Pelton reserves the right to, at any time, 
change, alter or amend these conditions by giving prior written notice to 
Mitcham.

          16.2 Mitcham shall confirm with Pelton all relevant delivery 
information prior to the submission of a purchase order for any of the 
Products.

          16.3 Pelton shall have the right to reject, in whole or in part, 
any Purchase Order from Mitcham, to refuse in whole or in part, to consent to 
any cancellation requested


                                       5

<PAGE>

by Mitcham, and to reject in whole or in part, any and all returns of the 
Products or to refuse to grant refunds or allowances on such returns, based 
upon reasonable grounds.

          16.4   All sales by Pelton to Mitcham shall be payable in U.S. 
dollars on an open 30 day account, said account period to be determined from 
the date of shipment from Pelton.

          16.5   Pelton reserves the right to modify, alter or amend any of 
the payment terms contained herein in order to meet the requirements of a 
specific transaction, however, any such deviation from the provisions of this 
Agreement shall not be construed as a permanent modification, alteration or 
amendment of the payment terms nor shall the same be used to establish a 
precedent for future transactions.

     17.  CONFIDENTIAL INFORMATION.

     Mitcham acknowledges that, as a result of this Agreement, it will become 
privy to certain confidential information, regarding Pelton and/or the 
Products, including without limitation, Pelton's manufacturing, marketing or 
other business processes, methods, machines, customer lists, and any other 
information which is of a confidential nature concerning any matter relating 
to the business of Pelton, all of which is referred to as "confidential 
information" Mitcham hereby agrees that it will not during the terms of this 
Agreement, nor for a period of five years after the termination hereof, 
divulge or deliver to any person, firm, corporation, business organization or 
other entity, any information, documents, papers, names or other information 
relating to the confidential information of Pelton except to the extent as 
required in Mitcham's performance of normal activities under this Agreement.  
The provisions of this paragraph are mandatory, Mitcham hereby acknowledges 
that the provisions of the Agreement may be specifically performed and 
enforced, and Mitcham consents and agrees that it may be restrained, enjoined 
or otherwise prevented from divulging any such confidential information if at 
any time Pelton reasonably fears that such event may occur.

     18.  FORCE MAJEURE. All transactions under this Agreement and all 
purchase orders accepted hereunder are subject to modification or 
cancellation in the event of strikes, labor disputes, lock-outs, accidents, 
fires, delays in manufacturing or in transportation or delivery of materials, 
floods, severe weather or other acts of God, embargoes, governmental actions, 
or any other cause beyond the reasonable control of the party concerned, 
whether similar to or different from the causes above enumerated; and 
including any special, indirect, incidental, or consequential damages arising 
from Pelton's delay in delivery or failure to deliver as a result of any such 
cause. In the event of a scarcity of any of the Products for whatever cause, 
Pelton will make a reasonable effort to allocate its available supply on the 
basis of past orders or otherwise as it sees fit, regardless of the time of 
receipt or acceptance of orders or the quantity of orders on hand.



                                      6

<PAGE>

     19. SECURITY INTERESTS.  Until full payment of the purchase price for 
the Products, Pelton retains, and Mitcham grants to Pelton, a purchase money 
security interest in all of the Products sold to Mitcham on account. Mitcham 
consents to actions by Pelton that are appropriate to perfect Pelton's 
purchase money security interest.

     20.  TERMINATION.  Upon the occurrence of any one or more of the 
following events, in addition to any other rights and remedies, Pelton shall 
have the right to immediately cancel and terminate this Agreement by written 
notice to Mitcham upon the occurrence of one or more of the following events.

     (a)  Failure of Mitcham to perform or comply with any one or more of the
          terms and conditions of this Agreement for 15 days after having 
          received written notice thereof.

     (b)  The discontinuance of Mitcham from functioning as a going business 
          for any reason whatsoever for a period of 10 consecutive business 
          days.

     (c)  The insolvency of Mitcham; or if Mitcham is adjudicated bankrupt or 
          insolvent; or the filing of a voluntary bankruptcy or reorganization
          petition by Mitcham; or the failure of Mitcham to vacate an 
          involuntary bankruptcy or a reorganization petition filed against 
          Mitcham within 15 days of the date of such filing; or if Mitcham's 
          ownership or control changes. Any transfer of this Agreement by 
          merger, consolidation, or liquidation, or any change in the ownership
          of, or the power to vote, the majority of Mitcham's outstanding voting
          equity, shall constitute assignment by change in ownership.  
          Notwithstanding any other provision of this paragraph 21(c), no 
          acquisition or disposition of Mitcham capital stock shall be 
          considered a change in ownership or control of Mitcham for purposes 
          hereof so long as (i) Billy F. Mitcham, Jr. ("BM, Jr.") retains 
          ownership of at least 5% of Mitcham's outstanding capital stock on 
          a fully-diluted basis, (ii) BM, Jr. retains voting control of at least
          15% of Mitcham's outstanding capital stock on a fully-diluted basis,
          (iii) no competitor of Pelton owns, directly or indirectly, whether
          issued or rights to acquire, more than five percent of Mitcham's 
          outstanding capital stock on a fully-diluted basis.

     (d)  Default by Mitcham in the payment of any obligations to Pelton, 
          after Mitcham has been advised in writing that payment is due.

     (e)  Assignment, or attempts to assign, by Mitcham of the rights under this
          Agreement.

     21.  WAIVER.  The failure of a party to insist upon strict performance of
any provision of this Agreement shall not constitute a waiver of, or estoppel
against asserting,



                                      7

<PAGE>

the right to require performance in the future. A waiver or estoppel in any 
one instance shall not constitute a waiver or estoppel with respect to a 
later breach.

     22.  SEVERABILITY. If any of the terms and conditions of this Agreement 
are held by any court of competent jurisdiction to contravene, or to be 
invalid under, the laws of any political body having jurisdiction over the 
subject matter hereof, such contravention or invalidity shall not invalidate 
the entire Agreement.  Instead, this Agreement shall be construed by 
reforming the particular offending provision or provisions held to be invalid 
so that it or they are valid and enforceable while remaining as faithful as 
possible to the original intent of the provision or provisions, the rights 
and obligations of the parties shall be construed and enforced accordingly, 
and this Agreement shall remain in full force and effect.

     23.  CONSTRUCTION. The headings in this Agreement are inserted for 
convenience and identification only and are not intended to describe, 
interpret, define, or limit the scope, extent, or intent of this Agreement or 
any other provision hereof. Whenever the context requires, the gender of all 
words used in this Agreement shall include the masculine, feminine, and 
neuter, and the number of all words shall include the singular and the plural.

     24.  COUNTERPART EXECUTION. This Agreement may be executed in any number of
counterparts with the same effect as if all the parties had signed the same 
document. All counterparts shall be construed together and shall constitute 
one and the same instrument.

     25.  CUMULATIVE RIGHTS. The rights and remedies provided by this 
Agreement are cumulative, and the use of any right or remedy by any party 
shall not preclude or waive its right to use any or all other remedies. These 
rights and remedies are given in addition to any other rights a party may 
have by law, statute, in equity or otherwise.

     26.  RELIANCE.  All factual recitals, covenants, agreements, 
representations and warranties made herein shall be deemed to have been 
relied on by the parties in entering into this Agreement.

     27.  NO THIRD PARTY BENEFICIARY.  Any agreement herein contained, express
or implied, shall be only for the benefit of the undersigned parties and 
their permitted successors and assigns, and such agreements and assumption 
shall not inure to the benefit of the obligees of any other party, whomsoever, 
it being the intention of the undersigned that no one shall be deemed to be a
third party beneficiary of this Agreement.

     28.  DRAFTING PARTY. This Agreement expresses the mutual intent of the 
parties to this Agreement. Accordingly, regardless of the preparing party, 
the rule of construction against the drafting party shall have no application 
to this Agreement.

     29.  TIME IS OF THE ESSENCE. Time is of the essence with respect to all 
provisions of this Agreement.



                                      8

<PAGE>

     30.  INCORPORATION OF SCHEDULES. All schedules attached to this Agreement 
are incorporated into this Agreement as fully as if stated within the body of 
this Agreement.

     31.  LITIGATION EXPENSES. If there is any litigation between the parties 
concerning this Agreement, any of the rights, privileges, or obligations of 
either party under this Agreement, or the relationship between Pelton and 
Mitcham, the prevailing party in such litigation will be entitled to recover 
its attorneys' fees and costs.

     Executed May 14, 1996.

                                       PELTON:


                                       PELTON COMPANY, INC.



                                       By: /s/ K.L. Mitchell
                                          ------------------------------------
                                               K.L. Mitchell, President
                                       ---------------------------------------
                                       (Name Printed)          (Title)


                                       MITCHAM:

                                       MITCHAM INDUSTRIES, INC.

                                       By: /s/ Billy F. Mitcham
                                          ------------------------------------
                                           Billy F. Mitcham, Jr., President







                                      9


<PAGE>
                                      SCHEDULE 1

Date: 05/14/96
Ref.No. 3857                                                         Page 1 of 4


                          PELTON COMPANY, INC. PRICE LIST

- --------------------------------------------------------------------------------
                                                                Unit    Extended
Item Qty.  Stock Number  Description                            Price    Price
- --------------------------------------------------------------------------------
          * VERSION 5.1 EQUIPMENT *
1   1     FSVCE-5.1       ADVII VIB CONTROL ELEC. SYS.-5.1    35515.00  35515.00
           Consisting of:
           (1)  ADVII ESG/VIB MANUAL-5.1 - $75.00 each
           (2)  ADVII ACCELEROMETER ASSEMBLY-5 - $1,365.00 each
           (1)  VIB LIFT ASSEMBLY (TYPICAL) - $900.00 each
           (1)  ADVII VIB. CONT. ELEC. UNIT-5.1 - $29,725.00 each
           (1)  VCE CONNECTOR PANEL ASSEMBLY-5.1 - $725.00 each
           (1)  ADV 2 RADIO CABLE - $100.00 each
           (9)  EXTERNAL CABLE (VERIFY LENGTH) - $120.00 each
           (1)  ADVII RADIO INTERCONNECT W/CABLE - $180.00 each
2   1     YR3RDPRTY       THIRD PARTY ROYALTY FEES              665.00    665.00
3   1     FFBOX           FUSE BOX COMPLETE                      54.00     54.00
4   1     FGRADIO         VHF FM RADIO WITH HARDWARE            800.00    800.00
5   1     FSESG-5.1       ADVII ESG SYSTEM-5.1                22583.00  22583.00
           Consisting of:
           (1)  ADVII ESG/VIB MANUAL-5.1 - $75.00 each
           (1)  ADVII ESG UNIT-5.1 - $21,778.00 each
           (1)  ADVII ESG-REC SYSTEM CABLE-5 - $550.00 each
           (1)  ADVII RADIO INTERCONNECT W/CABLE - $180.00 each
6   1     FSESGCCS        ESG COMPUTER COMMUNICATION SYS.      5936.00   5936.00
           Consisting of:
           (2)  COMPUTER COMM. SYSTEM MANUAL - $70.00 each
           (1)  CIS DISK SET - $50.00 each
           (1)  COMPUTER COMMUNICATION MODULE - $5,652.00 each
           (1)  9 PIN TYPE D TO E.S.G. CABLE - $94.00 each
7   1     YURTI           ADVII RECORDING TRK I/F UPGRADE      2530.00   2530.00
          * VERSION 5.1 SPARES *
8   1     FGCS-5.1        ADVII COMPONENT SPARES 5.1           4390.00   4390.00
9   1     FOEIC-4         ENCODE INTERFACE MODULE V4           2445.00   2445.00

          * MINI-CONTROLLER PLUS EQUIPMENT *
10  1     FSMCP           MINI CONTROLLER PLUS SYSTEM         31528.00  31528.00
           Consisting of:
           (1)  MINI CONTROLLER PLUS/ESG MANUAL - $75.00 each
           (2)  ADVII ACCELEROMETER ASSEMBLY-5 - $1,365.00 each
           (1)  VIB LIFT ASSEMBLY (TYPICAL) - $900.00 each
           (1)  MINI CONTROLLER PLUS UNIT - $25,738.00 each
           (1)  VCE CONNECTOR PANEL ASSEMBLY-5.1 - $725.00 each
           (1)  ADV 2 RADIO CABLE - $100.00 each
           (9)  EXTERNAL CABLE (VERIFY LENGTH) - $120.00 each
           (1)  ADVII RADIO INTERCONNECT W/CABLE - $180.00 each
11   1    FFBOX           FUSE BOX COMPLETE                      54.00     54.00
12   1    FGRADIO         VHF FM RADIO WITH HARDWARE            800.00    800.00

<PAGE>

                                      SCHEDULE 1

Ref.No. 3857                                                         Page 2 of 4
- --------------------------------------------------------------------------------
                                                                Unit    Extended
Item Qty.  Stock Number  Description                            Price    Price
- --------------------------------------------------------------------------------
13   1    FSESG-6         ADVII ESG SYSTEM-6                  25851.00  25851.00
           Consisting of:
           (1)  ADVII ESG/VIB MANUAL-6 - $75.00 each
           (1)  ADVII ESG UNIT-6 - $19,110.00 each
           (1)  ESG COMPUTER COMMUNICATION SYS. - $5,936.00 each
           (1)  ADVII ESG-REC SYSTEM CABLE-5 - $550.00 each
           (1)  ADVII RADIO INTERCONNECT W/CABLE - $180.00 each
           * MINI-CONTROLLER PLUS SPARES *
14   1    FGMCPCS         MINI PLUS COMPONENT SPARES           4811.00   4811.00
15   1    FOEIC-4         ENCODE INTERFACE MODULE V4           2445.00   2445.00
16   1    FCCPC-5         CONTROL PANEL CARD VERSION 5          825.00    825.00
17   1    FCPSC-5         POWER SUPPLY CARD-5                   829.00    829.00
18   1    FOFC-6          FILTER MODULE-6                      1097.00   1097.00

          * VERSION 6 EQUIPMENT *
19  1     FSVCE-6         ADVII VIB CONTROL ELEC. SYSTEM-6    35579.00  35579.00
           Consisting of:
           (1)  ADVII ESG/VIB MANUAL-6 - $75.00 each
           (2)  ADVII ACCELEROMETER ASSEMBLY-5 - $1,365.00 each
           (1)  VIB LIFT ASSEMBLY (TYPICAL) - $900.00 each
           (1)  ADVII VIB. CONT. ELEC. UNIT-6 - $29,789.00 each
           (1)  VCE CONNECTOR PANEL ASSEMBLY-5.1 - $725.00 each
           (1)  ADV 2 RADIO CABLE - $100.00 each
           (9)  EXTERNAL CABLE (VERIFY LENGTH) - $120.00 each
           (1)  ADVII RADIO INTERCONNECT W/CABLE - $180.00 each
20  1     FFBOX           FUSE BOX COMPLETE                      54.00     54.00
21  1     FGRADIO         VHF FM RADIO WITH HARDWARE            800.00    800.00
22  1     FSESG-6         ADVII ESG SYSTEM-6                  25851.00  25851.00
          Consisting of:
           (1)  ADVII ESG/VIB MANUAL-6 - $75.00 each
           (1)  ADVII ESG UNIT-6 - $19,110.00 each
           (1)  ESG COMPUTER COMMUNICATION SYS. - $5,936.00 each
           (1)  ADVII ESG-REC SYSTEM CABLE-5 - $550.00 each
           (1)  ADVII RADIO INTERCONNECT W/CABLE - $180.00 each
23  1     FSRTI ADVII RECORDING TRUCK I/F SYSTEM               2471.00   2471.00
          * VERSION 6 SPARES *
24  1     FGCS-6          ADVII COMPONENT SPARES-6             4743.00   4743.00
25  1     FOEIC-4         ENCODE INTERFACE MODULE V4           2445.00   2445.00

          * TEST EQUIPMENT *
26  1     FSA2TEST        ADV.II VIB. ELEC. T.P. SYSTEM         379.00    379.00
27  1     FSVS2-5         VS2 ADVII SYSTEM-5                   5523.00   5523.00

<PAGE>

                                      SCHEDULE 1

Ref.No. 3857                                                         Page 3 of 4
- --------------------------------------------------------------------------------
                                                                Unit    Extended
Item Qty.  Stock Number  Description                            Price    Price
- --------------------------------------------------------------------------------
28  1     FSVCAC          COLOR VIB COMPUTER ANALYSIS SYS     22536.00  22536.00
           Consisting of:
           (2)  COMPUTER COMM. SYSTEM MANUAL - $70.00 each
           (1)  COLOR 486DX NOTEBOOK COMPUTER - $5,438.00 each
           (1)  NOTEBOOK ANALOG INTERFACE UNIT - $677.00 each
           (1)  CIS DISK SET - $50.00 each
           (1)  COMPACT VCA CASE - $200.00 each
           (3)  FORCE METER ACC W/MAGNET & CABLE - $800.00 each
           (1)  NOTEBOOK VIBRA*SIG OPTION - $4,624.00 each
           (1)  NOTEBOOK VCA UNIT - $6,404.00 each
           (1)  PRINTER AND ACCESSORIES - $1,132.00 each
           (1)  NOTEBOOK VCA CABLE SET - $1,471.00 each

          * DISTRIBUTED SIMILARITY SYSTEM *
29   1    FSDS  DISTRIBUTED SIMILARITY SYSTEM                   961.00    961.00
          (1 REQUIRED PER VIBRATOR)
30   1    WAIIML-V        ADVII MEMORY LOAD CABLE-VCE           165.00    165.00
          (1 REQUIRED PER VIBRATOR)
31   1    WAIIML-E        ADVII MEMORY LOAD CABLE-ESG           155.00    165.00
          (1 REQUIRED PER CREW)

          * PELTON GPS EQUIPMENT *
          THE GPS SYSTEM ON THIS PRICE LIST IS ACCURATE WITHIN
          5 TO 10 METERS.  A SUB-METER ACCURACY SYSTEM CAN
          BE ASSEMBLED BY MAKING THE SUBSTITUTIONS LISTED
          AS OPTIONS DIRECTLY BENEATH THE GPS REFERENCE
          STATION SYSTEM AND THE VIBRATOR GPS SYSTEM.

32   1    FSESGGPS        ESG GPS SYSTEM                       8217.00   8217.00
           (ONE REQUIRED PER CREW) Consisting of:
           (1)  GPS DOCUMENTATION - $35.00 each
           (1)  GPS COMPUTER - $5,438.00 each
           (1)  GPS SOFTWARE PACKAGE - $2,450.00 each
           (1)  DUAL 9D CABLE - $294.00 each

33   1    FSREFGPS        GPS REFERENCE STATION SYSTEM         7192.00   7192.00
           (ONE REQUIRED PER CREW) Consisting of:
           (1)  REFERENCE STATION GPS - $4,194.00 each
           (1)  GPS VIB/REF PLATE ASSEMBLY - $333.00 each
           (1)  PELTON RADIO MODEM - $1,454.00 each
           (1)  VHF FM RADIO WITH HARDWARE - $800.00 each
           (1)  GPS REFERENCE STATION CABLE SET - $99.00 each
           (1)  GPS SYSTEM INTEGRATION - $312.00 each
           * SUB-METER REFERENCE STATION OPTION *
             Substitute one of the following reference
             stations for the Reference Station GPS
             listed in the system above:
           (1)  PELTON SUB-METER GPS REFERENCE STATION - $9,750.00 each
           (1)  TRIMBLE 4000RS REFERENCE SURVEYOR - $22,290.00 each

<PAGE>

                                      SCHEDULE 1

Ref.No. 3857                                                         Page 4 of 4
- --------------------------------------------------------------------------------
                                                                Unit    Extended
Item Qty.  Stock Number  Description                            Price    Price
- --------------------------------------------------------------------------------
34   2    FSVIBGPS        VIBRATOR GPS SYSTEM                  7197.00  14394.00
           (ONE REQUIRED PER VIBRATOR REPORTING IT'S POSITION)
           Consisting of:
           (2)  SVEESIX GPS RECEIVER - $1,384.00 each
           (2)  GPS VIB/REF PLATE ASSEMBLY - $333.00 each
           (2)  PELTON RADIO MODEM - $1,454.00 each
           (2)  VHF FM RADIO WITH HARDWARE - $800.00 each
           (2)  GPS VIBRATOR INTERFACE MODULE - $2,618.00 each
           (2)  VIBRATOR GPS CABLE SET - $296.00 each
           (2)  GPS SYSTEM INTEGRATION - $312.00 each
           * SUB-METER ACCURACY RECEIVER OPTION *
                Substitute one of the following receivers for
                the Sveesix GPS Receiver listed in the system above:
           (2)  PELTON SUBMETER GPS RECEIVER - $7,385.00 each
           (2)  TRIMBLE 4000DS DIFFERENTIAL SURVEYOR - $17,945.00 each

35   1    WGPSTCS         GPS TEST CABLE SET                    229.00    229.00

          * GPS SUPPORT VEHICLE SYSTEM *
36   1    FSREMGPS        REMOTE GPS MONITORING SYSTEM         4207.00   4207.00
           (ONE REQUIRED PER CREW)
           Consisting of:
           (1)  GPS DOCUMENTATION - $35.00 each
           (1)  GPS SOFTWARE PACKAGE - $2,450.00 each
           (1)  SUPPORT VEHICLE GPS MODULE - $1,539.00 each
           (1)  REMOTE GPS MONITORING CABLE SET - $183.00 each

37   1    FSSVGPS         SUPPORT VEHICLE GPS SYSTEM           3318.00   3318.00
           (ONE REQUIRED PER SUPPORT VEHICLE TO BE TRACKED)
           Consisting of:
           (1)  SVEESIX GPS RECEIVER - $1,384.00 each
           (1)  SUPPORT VEHICLE GPS MODULE - $1,539.00 each
           (1)  SUPPORT VEHICLE GPS MNTNG ASSLY - $234.00 each
           (1)  RADIO CABLE - $71.00 each
           (1)  SUPPORT VEHICLE GPS-SV6 CABLE - $90.00 each


<PAGE>

                            SCHEDULE 4

                          PELTON COMPANY
                    WARRANTY POLICY STATEMENT



1.   During the first one (1) year after delivery of the Equipment to Buyer, 
     should any part of the Equipment fail to properly operate due to faulty 
     workmanship or materials, the defective unit or part will be replaced or 
     repaired at no cost to Buyer, other than as described in paragraph 2 below.
     The determination of faulty workmanship or materials shall be at the sole 
     discretion of Seller.

2.   Buyer shall bear all responsibility and cost of transportation of the 
     Equipment, or any faulty unit or part thereof, to and from Seller's plant
     at Ponca City, Oklahoma for all warranty repairs or replacements.

3.   Failure of the Equipment or a portion thereof to perform to the 
     satisfaction of Buyer, or as warranted herein, shall not be sufficient 
     cause for the termination of the Contract by Buyer.

4.   Should Seller determine that any failure of the Equipment or any portion 
     thereof to properly perform is due to or caused by any modifications to 
     the Equipment made by Buyer or others, or from external circumstances not
     related to faulty workmanship or materials, or shall have occurred during
     a period of time subsequent to the term of this Limited Warranty, such 
     failure shall not be warranted hereunder and all repairs or replacements
     performed will be charged at Seller's Current Repair Rate Schedule.

5.   Software updates, if any, will be supplied to Buyer at no charge during 
     the warranty period.


<PAGE>

                               SCHEDULE 5

                             DISCOUNT SCHEDULE
                          PELTON CO., INC. PRODUCTS

                                                 Discount Percentage
                                                 -------------------

$0  to $.5M                                             10%
More than $.5M to $.75M                                  11%
More than $.75M to $1.0M                                 12%
More than $1.0M to $1.25M                                13%
More than $1.23M to $1.5M                                14%
More than $1.5M to $1.75M                                15%


<PAGE>

                                             CORPORATE ACCESS NUMBER
                                                      20710182

ALBERTA
GOVERNMENT OF ALBERTA



                    BUSINESS CORPORATIONS ACT

                           CERTIFICATE 
                                OF
                          INCORPORATION



MITCHAM CANADA LTD.

WAS INCORPORATED IN ALBERTA ON SEPTEMBER 20, 1996









[SEAL]                                            (Illegible)
                                       ---------------------------------------
                                               Registrar of Corporations


<PAGE>

CONSUMER AND CORPORATE
AFFAIRS

ALBERTA BUSINESS
CORPORATIONS ACT


                                  Form 1
                          ARTICLES OF INCORPORATION
                                (Section 6)

- ------------------------------------------------------------------------------
1.   Name of Corporation
- ------------------------------------------------------------------------------

     MITCHAM CANADA LTD.
- ------------------------------------------------------------------------------

2.   The classes and any maximum number of shares that the  corporation is 
     authorized to issue.

     UNLIMITED NUMBER OF COMMON SHARES

- ------------------------------------------------------------------------------
3.   Restrictions, if any, on share transfers.

     Subject to the provisions of the Business Corporations Act, Statutes of 
     Alberta, 1981, Chapter B-15, as amended from time to time, (the "Act") no 
     share of the Corporation shall be transferred by any shareholder (which, 
     for the purposes of these Articles, includes any executor or administrator
     of a deceased shareholder or the liquidator of a shareholder which is a 
     corporation) without the prior consent of the Directors of the Corporation
     expressed by resolution.

- ------------------------------------------------------------------------------
4.   Number (or minimum and maximum number) of directors.

     Minimum of One (1), maximum of Ten (10)

- ------------------------------------------------------------------------------
5.   Restrictions, if any, on business the corporation may carry on.

     No Restrictions

- ------------------------------------------------------------------------------
6.   Other provisions, if any.

     THE ATTACHED SCHEDULE "A" IS INCORPORATED INTO AND FORMS PART HEREOF.

- ------------------------------------------------------------------------------
7.   Incorporators                               Date: September 18, 1996

Names                    Addresses                        Signature
- ------------------------------------------------------------------------------
William J. Sheppard      7 Cedar Ridge Place S.W.         WILLIAM J. SHEPPARD
                         Calgary, Alberta, T2W 1X7

<PAGE>

                              SCHEDULE "A"

                          ARTICLES OF INCORPORATION

                                     OF

                             MITCHAM CANADA LTD.

ITEM 6.   OTHER PROVISIONS

1.   The number of shareholders for the time being of the Corporation 
(exclusive of persons who are in the employment of the Corporation or that of 
an affiliate, and persons who, having been formerly in the employment of the 
Corporation or that of an affiliate, were, while in that employment, 
shareholders of the Corporation and have continued to be shareholders of the 
Corporation after termination of that employment) shall not exceed 50, but 
where 2 or more persons hold 1 or more shares of the Corporation jointly, 
they shall, for the purpose of this Section, be treated as a single 
shareholder.

2.   Any invitation to the public to subscribe for securities of the Corporation
is prohibited.

<PAGE>

ALBERTA BUSINESS
CORPORATION ACT

                                 Form 3
                          NOTICE OF ADDRESS OR
                        NOTICE OF CHANGE OF ADDRESS
                               (Section 19)

- ------------------------------------------------------------------------------
1.   Name of Corporation.          2.   Corporate Access Number

     MITCHAM CANADA LTD.                20710182

- ------------------------------------------------------------------------------
3.   Address of the registered office.

     BISHOP & MCKENZIE
     #2230 700 - 9TH AVENUE S.W.
     CALGARY, ALBERTA
     T2P 3V4

- ------------------------------------------------------------------------------
4.   Records Address

     c/o MILLER THOMSON
     20 QUEEN STREET WEST
     SUITE 2500
     TORONTO, ONTARIO
     M5H 3S1

- ------------------------------------------------------------------------------
5.   Address for service by mail, if different from Item 3

     N/A

- ------------------------------------------------------------------------------
Date                     Signature               Description of Office

September 18, 1996       ARMAND J. MOSS          Solicitor/Agent
                         --------------
                         ARMAND J. MOSS

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

<PAGE>

CONSUMER AND CORPORATE AFFAIRS
ALBERTA BUSINESS CORPORATIONS ACT

                                  Form 6
                            NOTICE OF DIRECTORS
                       OR NOTICE OF CHANGE OF DIRECTORS

- ------------------------------------------------------------------------------
1.   Name of Corporation.

     MITCHAM CANADA LTD.

- ------------------------------------------------------------------------------
2.   Corporation No.

          20710182
- ------------------------------------------------------------------------------
3.   On the ____ day of __________, 1996 the following person(s) became 
     director(s) of the corporation: 

     Name           Mailing Address          Resident, Canadian
     ----           ---------------          ------------------

- ------------------------------------------------------------------------------
4.   On the ____ day of __________, 1996 the following person(s) ceased to be 
     director(s) of this corporation:

     Name           Residential Address
     ----           -------------------


- ------------------------------------------------------------------------------
5.   As of this date, the director(s) of the corporation is (are):

     Name                     Mailing Address               Resident Canadian
     ----                     ---------------               -----------------
     William J. Sheppard      7 Cedar Ridge Place S.W.
                              Cardston, Alberta, T2W 1X7                  Yes

- ------------------------------------------------------------------------------
6.   Are at least half of the Members of the Board of Directors Resident 
     Canadians?  YES

- ------------------------------------------------------------------------------
7.   Date                    Signature                                   Title

     September 18, 1996      ARMAND J. MOSS                    Solicitor/Agent
                             --------------
                             ARMAND J. MOSS

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

FOR DEPARTMENTAL USE ONLY          FILED







<PAGE>

                    EXCLUSIVE EQUIPMENT LEASE AGREEMENT

     This Exclusive Equipment Lease Agreement (the "Agreement") is entered 
into on this 20th day of September, 1996 (the "Effective Date") between Mitcham 
Industries, Inc., a Texas corporation ("Mitcham"), and SERCEL, S.A., a 
corporation organized under the laws of France ("SERCEL"), which parties 
agree as follows:

     1.  INTRODUCTION.  SERCEL and certain of its affiliates design, 
manufacture and market fully-configured seismic data acquisition systems (the 
"SERCEL Systems"), the components thereof and equipment related thereto, 
including station units that are sometimes called "channel boxes." At the 
present time, SERCEL and certain of its affiliates manufacture equipment as 
described on SCHEDULE 1 (collectively the "Products").  Mitcham provides full 
service leasing services to customers in the oil and gas industry, including 
the leasing of new and used channel boxes to customers who have SERCEL 
Systems.  For good and valuable consideration, the receipt and sufficiency of 
which are hereby acknowledged for all purposes, Mitcham and SERCEL agree to 
the terms set forth herein.

     2.  EXCLUSIVE AUTHORIZED THIRD PARTY LESSOR.  Mitcham hereby represents 
to SERCEL that Mitcham has the necessary skills, experience, personnel, 
facilities and equipment to effectively perform its responsibilities as the 
exclusive leasing representative for SERCEL as described in this Agreement. 
In reliance upon that representation, SERCEL hereby appoints Mitcham as the 
exclusive representative for SERCEL to lease the Products throughout the 
world (the "Territory"). Notwithstanding the foregoing, Mitcham's appointment 
pursuant hereto shall not include financing leases or other leases of 
duration of greater than one year. During the term of this Agreement, Mitcham 
will actively promote and solicit the leasing of the Products. During the 
term of this Agreement, in the event that a third party makes inquiry of 
SERCEL as to the possibility of leasing any of the Products anywhere in the 
Territory, then and upon each such inquiry, SERCEL shall contact Mitcham (by 
telephone, fax or letter) and explain in reasonable detail the identity of 
the third party and the terms, if any, that have been discussed with regard 
to such Lease (as defined below) and Mitcham shall promptly contact such 
third party and attempt to negotiate the terms of the proposed Lease. Except 
as set forth in Section 5 below, during the term of this Agreement, SERCEL 
shall not recommend or suggest any competitor of Mitcham or any other third 
party as a source from which any of the Products may be leased in the 
Territory.  Notwithstanding any provisions to the contrary contained herein, 
SERCEL shall not be obligated to refer its affiliates to Mitcham, and SERCEL 
shall be permitted to directly lease to its affiliates.

     3.  PURCHASE OF PRODUCTS FROM SERCEL.  Subject to the other provisions 
of this Agreement, Mitcham agrees that it will purchase from SERCEL, and 
SERCEL agrees that it will sell to Mitcham, the Products necessary to meet 
Mitcham's obligations under each Lease as provided herein. The terms and 
conditions of purchases by Mitcham of the Products hereunder shall be 
governed by SERCEL's standard terms and conditions, a copy of which is 
attached hereto as SCHEDULE 3(a); PROVIDED, HOWEVER, that in the event of any 
conflict between the terms 


<PAGE>

of such terms and conditions and the terms hereof, the terms of this 
Agreement shall prevail. SERCEL may update SCHEDULE 3(a) from time to time 
after written notice to Mitcham. SERCEL shall sell to Mitcham such of the 
Products as Mitcham shall order (an "Order") valued after giving effect to 
the discount(s) set forth on SCHEDULE 3(b).  Mitcham shall receive the 
discounts set forth on SCHEDULE 3(b) attached hereto with regard to the 
Products ordered by Mitcham in each Order. The actual amount of the Minimum 
Purchase Requirement (as defined below) and each Order for the Products by 
Mitcham after the Effective Date of this Agreement shall satisfy a portion of 
the Aggregate Purchase Requirement.

     4.  LEASED SERCEL BOXES.  It is the intent of this Agreement that, with 
regard to any channel boxes (the "Leased SERCEL Boxes") that are owned by 
SERCEL as of the date of this Agreement and subject to a Lease to a third 
party, Mitcham shall acquire the Leased SERCEL Boxes.  For purposes hereof, a 
description of the Leased SERCEL Boxes to be acquired by Mitcham is set forth 
on SCHEDULE 4. Within 10 days of the Effective Date Mitcham shall acquire the 
Leased SERCEL Boxes for $800,000 and such acquisition shall satisfy a portion 
of the Minimum Purchase Requirement (as defined below).  "Lease" or "Leasing" 
means an operating lease of the Products in the Territory during the Term, as 
defined herein.

     5.  EXCEPTIONS TO LEASE IN CERTAIN INSTANCES.  Mitcham shall have 
discretion to accept or reject any third party referred by SERCEL for 
Leasing, as a result of (i) possessing an insufficient amount of the Products 
for Lease to such third party (provided, however, the continued failure of 
Mitcham to maintain a sufficient amount of Products to satisfy demand could 
be evidence that Mitcham is not actively promoting the leasing of Products, 
as required hereunder unless such continued failure is caused by the failure 
of SERCEL to deliver Products to Mitcham), (ii) reasonably apparent credit 
risk or any other reasonable business-related factor, or (iii) inability to 
reach agreement on the terms of such Lease. Notwithstanding the previous 
sentence, Mitcham shall use its reasonable good faith efforts to service 
every third party referred by SERCEL for Leasing. Mitcham shall be deemed to 
have rejected such a third party as a result of inability to agree on the 
terms of a Lease if Mitcham and the third party are not able to reach an 
agreement on such terms within five business days of such third party's first 
contact with Mitcham with regard to such proposed Lease. If SERCEL Leases to 
such third party, then SERCEL shall have the right to continue to lease to 
such third party after the term of the initial Lease between them shall 
terminate; PROVIDED, HOWEVER, that if (x) the Lease between such a third 
party and SERCEL shall terminate, (y) the Leased Product is returned to 
SERCEL, and (z) such third party shall later make an inquiry concerning 
Leasing of the Products, SERCEL shall again follow the procedure set forth in 
Section 2 above.

     6.  PRICING. In no event shall either SERCEL or Mitcham have any right 
to require that either of them charge any specific price or follow any 
pricing guidelines or establish or require any other specific or general term 
with regard to the Leasing of any of the Products, or the provision of any 
other good or service by either of them. Notwithstanding the foregoing, 
Mitcham shall use its reasonable best efforts to have a reasonable quantity 
of the Products available for lease at prices which Mitcham believes reflects 
the supply of and demand for the Products.


                                       2
<PAGE>

     7.  PURCHASE REQUIREMENTS.  Subject to the terms hereof, in the event 
that Mitcham does not purchase Products from SERCEL under this Agreement in 
an amount that satisfies both the Aggregate Purchase Requirement and the 
Minimum Purchase Requirement, at SERCEL's option this Agreement may be 
terminated. For purposes hereof, the term "Aggregate Purchase Requirement" 
shall mean Products purchased by Mitcham from SERCEL during the period from 
the Effective Date through December 31, 1999 with such Products having an 
aggregate purchase price of $10,200,000. For purposes hereof, the term 
"Minimum Purchase Requirement" shall mean Products purchased by Mitcham from 
SERCEL for six consecutive periods with a commitment to purchase $1,700,000 
in Products each period.  The first period in which Mitcham shall be required 
to satisfy the Minimum Purchase Requirement shall be from the Effective Date 
through June 30, 1997. Subsequent periods shall be spaced at intervals of six 
months each and shall end on December 31, 1997; June 30, 1998; December 31, 
1998; June 30, 1999; and December 31, 1999.  All amounts described above 
shall be exclusive of charges appearing on the invoice for packing, 
transportation, insurance, duties, taxes and any other charges which do not 
include a component of profit for SERCEL. Notwithstanding anything herein to 
the contrary, in the event that a Minimum Purchase Requirement is not 
satisfied by Mitcham in any period ending before June 30, 1998, this 
Agreement shall not be terminated by SERCEL on account of such failure to 
satisfy unless the amount of such shortfall, plus the Minimum Purchase 
Requirement for the subsequent period, is not purchased by Mitcham in the 
subsequent period. For example, if $800,000 in Products is acquired during 
the period ending on December 31, 1997, in order for SERCEL not to have the 
option to terminate this Agreement, Mitcham shall have to acquire $2,600,000 
($900,000 + $1,700,000) in Products during the period ending June 30, 1998. 
For purposes hereof, Products purchased by Mitcham shall include Products 
ordered by Mitcham regardless of when such Products are delivered so long as 
such Products are ordered before 90 days of the end of a period and paid for 
in accordance with the terms and conditions set forth in SCHEDULE 3(a).

     8.  PROVISION OF CERTAIN GOODS AND SERVICES BY SERCEL.  SERCEL hereby 
agrees that Mitcham shall have the right to send a reasonable number of its 
employees and representatives of its customers who Lease the Products from 
Mitcham to such technical, training, operations and maintenance classes as 
SERCEL provides to SERCEL customers who lease or purchase the Products from 
SERCEL, at no tuition charge to Mitcham. SERCEL will have no responsibility 
for travel, lodging, food or incidental expenses of the Mitcham attendees. 
SERCEL hereby agrees to send to Mitcham such quantities of all manuals and 
selling information, marketing brochures and literature regarding the 
Products (other than proprietary information) as SERCEL develops and as 
Mitcham shall reasonably request in connection with its Leasing activities, 
at no charge to Mitcham. In addition, Mitcham shall have the right to acquire 
up to five sets of station unit testing and repair equipment ("TMS") at 
SERCEL's cost, which cost is $22,500 per TMS.

     9.   WARRANTY AND SERVICE.

          9.1  SERCEL warrants to Mitcham all of the new Products sold by 
SERCEL to Mitcham as per SERCEL's standard warranty terms.


                                       3
<PAGE>

          9.2  The warranty period shall begin from and after the date of 
installation of the Products, but only on the condition that such 
installation is made within 30 days from the date such Product is received by 
Mitcham.

          9.3  SERCEL makes no warranties or representations whatsoever with 
respect to any non-SERCEL products, however, any warranty information from 
the manufacturers of the non-SERCEL products shall be passed on to Mitcham.

          9.4  The standard SERCEL warranty is given expressly and in lieu of 
all other express or implied warranties, including a warranty of 
merchantability or fitness and in no event shall SERCEL be liable for 
consequential damages resulting from the use of any of the Products.

          9.5  In no event shall Mitcham have any authority whatsoever, 
express or implied, to make warranties other than those provided for herein 
without prior written permission from the SERCEL.

     10.  SCHEDULED MAINTENANCE OF LEASED EQUIPMENT; REPAIRS.  Mitcham and 
SERCEL acknowledge that third party lessees of the Products from Mitcham may 
return such Leased Products directly to SERCEL after the termination of such 
Leases.  In such event, SERCEL shall perform its standard maintenance check 
of such Products and inform Mitcham of any necessary repairs. Mitcham shall 
pay the greater of (i) $35 for each of the Products checked by SERCEL; or 
(ii) $250 for such maintenance check (regardless of the number of Products 
checked), as well as the cost of any repair to such Products by SERCEL, and 
any reasonable and ordinary freight and storage charges incurred by SERCEL 
with regard to such Products. Mitcham shall be entitled to receive the same 
discount on the repair of Products (but not the maintenance checks) that it 
receives on the purchase of Products. Following such maintenance check and 
any needed repairs, SERCEL shall ship such Products to Mitcham at Mitcham's 
expense to a location designated by Mitcham.

     11.  RIGHT TO USE NAME.  Mitcham shall have the right during the Term of 
this Agreement to (i) identify itself as the exclusive third party lessor of 
the Products, and (ii) use all SERCEL trademarks and tradenames related to 
the Products that Mitcham Leases to third parties in advertisements and sales 
and promotional materials; PROVIDED, HOWEVER, that Mitcham shall obtain the 
prior written approval of SERCEL to any such advertisements and sales and 
promotional materials.  No rights to manufacture are granted by this 
Agreement.  All such SERCEL trademarks and tradenames related to the Products 
are and shall remain the sole and exclusive property of SERCEL, and Mitcham 
shall have no rights therein other than as specifically set forth in this 
Agreement.

     12.  RELATIONSHIP OF THE PARTIES.  Neither Mitcham nor SERCEL shall have 
(i) any liability for Leases or sales of any of the Products by the other, or 
(ii) any authority to control, act for or obligate the other in any way, 
except as set forth herein. This Agreement shall not be construed as creating 
an agency, partnership or joint venture between Mitcham and SERCEL. Neither 
Mitcham nor SERCEL (or any of their employees or representatives) shall be 
construed 


                                       4
<PAGE>

as an agent, consultant or employee of the other for any purpose. Mitcham 
shall not have the authority to bind SERCEL in any respect, it being intended 
that Mitcham shall act as an independent contractor and not as an agent, with 
the understanding that SERCEL shall not be responsible for any obligations 
and/or liabilities incurred by Mitcham in connection with its business 
activities.

     13.  TERM OF AGREEMENT.  Unless sooner terminated in accordance with the 
provisions hereof, this Agreement shall be effective from the Effective Date 
through December 31, 1999 (the "Term").

     14.  NO EFFECT ON RIGHT TO SELL.  This Agreement shall not be construed 
to have any effect on SERCEL's rights to sell (as opposed to Lease) its 
products and services to any party. This Agreement shall not be construed to 
have any effect on Mitcham's rights to sell any products and services to any 
party.

     15.  INDEMNITY.  SERCEL and Mitcham hereby agree to the following 
indemnification obligations:

          (a)  Mitcham shall indemnify and hold harmless SERCEL, its 
     directors, officers, employees and affiliates (hereinafter the "SERCEL 
     Indemnitees") against any and all liability, loss, damages, fines, 
     penalties, costs and expenses (including, without limitation, court 
     costs and reasonable attorneys fees) incurred by any of the SERCEL 
     Indemnitees as a result of any breach or violation by Mitcham or others 
     acting on its behalf of any obligation, covenant, representation or 
     warranty of Mitcham set forth in this Agreement.

          (b)  SERCEL shall indemnify and hold harmless Mitcham, its 
     directors, officers, employees and affiliates (hereinafter the "Mitcham 
     Indemnitees") against any and all liability, loss, damages, fines, 
     penalties, costs and expenses (including, without limitation, court 
     costs and reasonable attorneys fees) incurred by any of the Mitcham 
     Indemnitees (i) as a result of any breach or violation by SERCEL or 
     others acting on its behalf of any obligation, covenant, representation 
     or warranty of SERCEL set forth in this Agreement, (ii) for 
     infringement or claim of infringement of any claimed patent rights 
     relating to the Products, or (iii) that arise out of or are based upon 
     losses, claims, damages or liabilities resulting from the design, 
     manufacture, and/or operation of any Products, from the failure of any 
     such Products to satisfy any warranties (whether expressed or implied, 
     if any), or from any defect in the Products.

           c.   Either party seeking indemnification hereunder shall notify 
     the other party in writing of any legal action commenced against the 
     SERCEL Indemnitees or the Mitcham Indemnitees, as the case may be, as 
     soon as practicable.  The indemnity obligations of Mitcham and SERCEL 
     shall survive the expiration or termination of this Agreement.


                                       5
<PAGE>

16.  GENERAL.

     (a)  The addresses of Mitcham and SERCEL for purposes of giving any 
notice or other communication under this Agreement are as set forth below.  
Any such notice or communication shall be in writing and signed by an officer 
or authorized representative of Mitcham or SERCEL, as applicable. Any such 
notice or communication shall be deemed to have been given (i) immediately 
upon physical delivery to the addressee. and (ii) three days after such 
notice or communication has been deposited in the United States mail, 
addressed as set forth below, first-class postage prepaid, certified mail, 
return receipt requested.

     Mitcham:            Mitcham Industries, Inc.
                         P.O. Box 1175
                         Huntsville, Texas 77342
                         Attn: Billy F. Mitcham, Jr.


     SERCEL:             SERCEL Incorporated
                         17155 Park Row
                         Box 218909
                         Houston, Texas 77218
                         Attn: Robert J. Albers

     Notice may be served in any other manner, including telex, telecopy, 
telegram, etc., but shall be deemed delivered and effective as of the time of 
actual delivery.

     (b)  Mitcham and SERCEL represent and warrant to each other that the 
execution, delivery and performance of this Agreement have been authorized by 
all necessary corporate action, and that this Agreement is a valid and 
binding obligation of each of them, respectively. Mitcham and SERCEL 
represent and warrant to each other that, to the best of their knowledge, 
neither the execution and delivery of nor the performance of this Agreement 
will conflict with or result in a breach of any (i) law or of any regulation, 
order, writ, injunction, or decree of any court or government authority of 
any country or state in which this Agreement is to be performed, or (ii) any 
agreement to which they are a party.

     (c)  This Agreement represents the entire agreement between Mitcham and 
SERCEL with regard to the subject matter hereof, and may not be amended, 
modified or terminated except by a written document signed by duly authorized 
officers of Mitcham and SERCEL.

     (d) This Agreement may not be assigned by either party hereto; except 
with SERCEL consent which shall not be reasonably withheld that Mitcham may 
assign its rights under this Agreement to any subsidiary or affiliate and 
SERCEL may assign this Agreement to any entity that acquires its 
manufacturing operations (a "Sale").  However, in the event of a Sale, 
Mitcham shall have the option upon 90 days written notice to terminate this 
Agreement. In addition, in the event Billy F. Mitcham, Jr. is no longer 
employed by Mitcham in a senior management capacity, SERCEL shall have the 
option upon 90 days written notice to terminate this Agreement.  This 
Agreement shall bind and be enforceable 


                                       6
<PAGE>

against the parties hereto and their respective successors and permitted 
assigns. Notwithstanding such assignment, Mitcham shall continue to be liable 
for all obligations of Mitcham set forth in this Agreement.

     17.  COMPLIANCE WITH LAWS.  In all of its activities pursuant to this 
Agreement, Mitcham and SERCEL shall comply with all laws, decrees, statutes, 
rules, regulations, codes and ordinances of any jurisdiction which may be 
applicable to such activities, including, without limitation, laws imposing 
registration and disclosure requirements on Mitcham; provided, however, 
insignificant violations of any of the foregoing that have no more than a de 
minimis effect on Mitcham or SERCEL shall not be a violation of this 
Agreement.  In leasing the Products hereunder, Mitcham shall act at all times 
in a manner demonstrating a high level of integrity and ethical standards. 
Without limiting the scope of its general obligations set forth above in this 
section, Mitcham hereby represents and warrants to SERCEL in connection with 
its activities performed with regard to the Products in the past (if any), 
and hereby covenants and agrees with SERCEL in connection with its activities 
to be performed in connection with the Products in the future, that Mitcham 
and any person or firm acting in association with or on behalf of Mitcham:

     -    has not offered, paid, given, promised to pay or give, or authorized 
          the payment or gift of, and

     -    will not offer, pay, promise to pay or give, or authorize the payment
          or gift of, 

any money or thing of value to:

     -    any "Foreign Official" as defined in the United States Foreign 
          Corrupt Practices Act (Pub. L. No. 95-213, 94 Stat. 1494), together 
          with all amendments to that Act which are effective during the term 
          hereof (the "FCPA");

     -    any political party or party official, or any candidate for political
          office; or

     -    any other person

for the purpose of:

     -    influencing any act or decision of such Foreign Official, political 
          party, party official, or candidate in his or its official capacity;

     -    inducing such Foreign Official, political party, party official or 
          candidate to do or omit to do an act in violation of his or its 
          official duty; or

     -    inducing such Foreign Official, political party, party official or 
          candidate to use his or its influence with a foreign government or 
          an instrumentality of such government to affect or influence any act 
          or decision of such government or 


                                       7
<PAGE>

          instrumentality in order to assist SERCEL to obtain or retain 
          business with any person or to direct business to any person.

     Further, Mitcham hereby represents and warrants to SERCEL that no person 
having a direct or indirect financial interest in Mitcham as of the date 
hereof is: (i) a Foreign Official, (ii) an official of any political party, 
or (iii) a candidate for political office; provided, however, for purposes 
hereof, a person shall not be deemed to have a direct or indirect financial 
interest in Mitcham as a result of owning less than five percent (5%) of the 
outstanding shares of common stock of Mitcham. In connection with determining 
whether a person owns five percent (5%) or more of the such stock, Mitcham 
shall be permitted to rely upon filings made by its shareholders under the 
Securities Exchange Act of 1934, as amended, or filings made under other 
applicable federal securities laws. Mitcham shall immediately notify SERCEL 
in the event that any person now or hereafter having such a financial 
interest in Mitcham shall assume such a status.

     From time to time as requested by SERCEL, Mitcham shall, within five (5) 
days after request from SERCEL, certify to SERCEL in writing that the 
obligations, representations and warranties of Mitcham set forth in this 
Section have not been violated. SERCEL shall not be permitted to request such 
certification more often than once each calendar quarter unless it has reason 
to believe a violation has occurred. Mitcham shall cooperate fully with any 
investigation which may be conducted by representatives of SERCEL for the 
purpose of determining whether or not Mitcham has violated any of those 
obligations, representations and warranties. In the event that amendments in 
the FCPA reasonably necessitate modifications to this Section 17, the parties 
hereto agree to negotiate in good faith in connection therewith and enter 
into such modifications.

     18.  MITCHAM UNDERTAKINGS.  Mitcham agrees:

               (a)  To use its reasonable best efforts to actively promote 
     and solicit the leasing of the Products.

               (b)  To participate in training programs which may be offered 
     by SERCEL or by others relating to the Products.

               (c)  To obtain approval of SERCEL prior to the commencement of 
     any advertising relating to the sale of the Products which advertising has 
     not been previously approved by SERCEL.

               (d)  Not knowingly to lease the Products to companies or 
     countries that are precluded by United States law from trading with the 
     United States or its residents and, to make reasonable inquiry in 
     connection therewith, including inserting provisions in the leases with 
     their customers that are reasonably intended to keep Mitcham's customers 
     from using the Products in the countries in which United States law 
     prohibits the use of the Products.


                                       8
<PAGE>


               (e)  To make all reasonable effort to use the agents described 
     on SCHEDULE 18(e) and that have been designated by SERCEL in locations 
     outside of the United States or Canada so as to minimize conflicts between
     agents, except Mitcham shall not be obligated to use its reasonable efforts
     in India since Mitcham currently has an agent in such country. However, 
     if conflicts arise as a result of multiple agents, both parties will make 
     a reasonable attempt to use the same agent.

               (f)  To use all reasonable best efforts to continue to maintain 
     an organization commensurate with the growth of Leasing of the Products.

               (g)  To return to SERCEL on termination of this Agreement any 
     and all catalogs, samples, price lists, and any other data, information 
     and/or supplies or materials furnished by SERCEL which are in the 
     possession of Mitcham or any of its employees, agents, representatives or
     bailees.

               (h)  Not to alter, hide nor secrete SERCEL's name on any of the
     Products or on any sales promotion material furnished by SERCEL.

     19.  PURCHASE ORDER ACCEPTANCE AND PAYMENT.

          19.1  All sales of the Products are subject to SERCEL's standard 
conditions of sale, however, SERCEL reserves the right to, at any time, 
change, alter or amend these conditions by giving prior written notice to 
Mitcham.

          19.2  Mitcham shall confirm with SERCEL all relevant delivery 
information prior to the submission of a purchase order for any of the 
Products.

          19.3  SERCEL shall have the right to reject, in whole or in part, 
any Purchase Order from Mitcham, to refuse in whole or in part, to consent to 
any cancellation requested by Mitcham, and to reject in whole or in part, any 
and all returns of the Products or to refuse to grant refunds or allowances 
on such returns, based upon reasonable grounds.

          19.4  All sales by SERCEL to Mitcham shall be payable in U.S. 
dollars on an open 30 day account, said account period to be determined from 
the date of shipment from SERCEL.

          19.5  SERCEL reserves the right to modify, alter or amend any of the 
payment terms contained herein in order to meet the requirements of a 
specific transaction, however, any such deviation from the provisions of this 
Agreement shall not be construed as a permanent modification, alteration or 
amendment of the payment terms nor shall the same be used to establish a 
precedent for future transactions.

     20.  CONFIDENTIAL INFORMATION.  Mitcham agrees that it will maintain in
strict confidence, and not disclose to any other person or firm except with 
the prior written permission



                                      9


<PAGE>

of an authorized officer of SERCEL, any and all information received from 
SERCEL or prepared by Mitcham for SERCEL regarding prices, customer lists, 
business plans, strategies, forecasts, studies, reports and any other 
information which may be considered confidential or proprietary by SERCEL and 
which is not publicly available. The confidentiality obligation of Mitcham 
under this Section 20 shall survive the expiration or termination of this 
Agreement. In the event that Mitcham receives a request to disclose all or 
any part of the confidential information under the terms of a subpoena or 
order issued by a court or by a governmental body, Mitcham agrees (i) to 
notify SERCEL immediately of the existence, terms, and circumstances 
surrounding such request, (ii) to consult with SERCEL on the advisability of 
taking legally available steps to resist or narrow such request, and (iii) if 
disclosure of such information is required to prevent Mitcham from being held 
in contempt or subject to other penalty, to furnish only such portion of the 
information as, in the written opinion of counsel reasonably satisfactory to 
SERCEL, it is legally compelled to disclose and to exercise its best efforts 
to obtain an order or other reliable assurance that confidential treatment 
will be accorded to the disclosed information. The provisions of this Section 
are mandatory, Mitcham hereby acknowledges that the provisions of the 
Agreement may be specifically performed and enforced, and Mitcham consents 
and agrees that it may be restrained, enjoined or otherwise prevented from 
divulging any such confidential information if at any time SERCEL reasonably 
fears that such event may occur.

     21.  FORCE MAJEURE. All transactions under this Agreement and all 
purchase orders accepted hereunder are subject to modification or 
cancellation in the event of strikes, labor disputes, lock-outs, accidents, 
fires, delays in manufacturing or in transportation or delivery of materials, 
floods, severe weather or other acts of God, embargoes, governmental actions, 
or any other cause beyond the reasonable control of the party concerned, 
whether similar to or different from the causes above enumerated; and 
including any special, indirect, incidental, or consequential damages arising 
from SERCEL's delay in delivery or failure to deliver as a result of any such 
cause.  ln the event of a scarcity of any of the Products for whatever cause, 
SERCEL will make a reasonable effort to allocate its available supply on the 
basis of past orders or otherwise as it sees fit, regardless of the time of 
receipt or acceptance of orders or the quantity of orders on hand.

     22.  SECURITY INTERESTS.  Until full payment of the purchase price for 
the Products, SERCEL hereby retains, and Mitcham hereby grants to SERCEL, a 
purchase money security interest in all of the Products sold to Mitcham on 
account.  Mitcham consents to actions by SERCEL that are appropriate to 
perfect SERCEL's purchase money security interest and agrees to execute such 
financing statements as are reasonably requested by SERCEL in connection with 
the foregoing.

     23.  TERMINATION. This Agreement may be terminated at any time:

          (a)  by the mutual agreement of the parties; or



                                     10

<PAGE>

          (b)  by either party upon giving a notice of termination to the other
     party in the event the other party fails to perform, observe or comply 
     with any of the obligations or undertakings of such other party which are
     contained in this Agreement, and such failure has not been cured within 
     fifteen (15) days after the terminating party has given a written notice
     specifying such failure to the other party.

     Notwithstanding the above, SERCEL shall be entitled to immediately 
terminate this Agreement effective upon the giving of notice to Mitcham in 
the event that: (i) SERCEL has reasonable cause to believe that Mitcham or 
others acting in association with or on behalf of Mitcham have committed, or 
intend to commit, a violation of the FCPA; (ii) Mitcham refuses or is unable 
to make the certification described in Section 17; or (iii) Mitcham ceases 
doing business as a going concern, makes an assignment for the benefit of 
creditors, admits in writing its inability to pay its debts as they become 
due or such fact is determined by judicial proceedings, files a voluntary 
petition in bankruptcy, is adjudicated a bankrupt or an insolvent, files a 
petition seeking for itself any reorganization, rearrangement, composition, 
readjustment, liquidation, dissolution, or similar arrangement under any 
present or future statute, law or regulation, or files an answer admitting 
the material allegations of a petition filed against it in any such 
proceedings, consents to or acquiesces in the appointment of a trustee, 
receiver, or liquidator of, all or any substantial part of its assets or 
properties, or if it or the holders of its common stock shall take any action 
contemplating its dissolution or liquidation. ln such event, SERCEL shall 
have no further liability to Mitcham under this Agreement.

     24.  ARBITRATION.  All disputes involving this Agreement shall be 
submitted to an arbitrator appointed by, and operating under, the rules of 
the Judicial Arbitration and Mediation Service (J.A.M.S.). The choice of the 
individual arbitrator shall be upon mutual agreement of SERCEL and Mitcham, 
and the parties agree to negotiate in good faith in connection with the 
selection of the individual arbitrator. The written decision of the arbitrator
shall be final and binding upon the parties, and shall be convertible to a 
court judgment in the State of Texas. The arbitration shall take place in the 
State of Texas.  The prevailing party as determined by the arbitrator shall 
be entitled to receive reasonable costs and reasonable attorney's fees from 
the non-prevailing party in addition to any other relief granted. No demand 
for arbitration shall be made after the date when institution of a legal or 
equitable proceeding based upon the claim or dispute would be barred by the 
applicable statute of limitations of the State of Texas.  All demands for 
arbitration shall be made in accordance with Section 16 and shall be deemed 
made as of the sooner of actual receipt or the date the demand is placed in 
the United States Mail. Any party shall be entitled to file a lawsuit to 
specifically enforce the parties' agreement to arbitrate and for the purpose 
of obtaining injunctive relief to enforce this Agreement.

     25.  APPLICABLE LAW. THIS AGREEMENT SHALL BE GOVERNED BY THE LAWS OF THE 
UNITED STATES OF AMERICA AND THE STATE OF TEXAS. MITCHAM HEREBY IRREVOCABLY 
CONSENTS TO BE SUBJECT TO THE PERSONAL JURISDICTION OF ANY UNITED STATES, 
STATE OR LOCAL COURT SITTING IN HARRIS COUNTY, TEXAS, U.S.A. IN CONNECTION 
WITH ANY ACTION TO DETERMINE ANY DISPUTE ARISING UNDER THIS AGREEMENT OR TO 
ENFORCE THE PROVISIONS HEREOF. VENUE FOR ALL SUITS AND ACTIONS ARISING OUT OF 
OR IN CONNECTION WITH THIS AGREEMENT SHALL BE PROPER ONLY IN THE STATE 



                                     11


<PAGE>

AND FEDERAL COURTS SITTING IN HARRIS COUNTY, TEXAS. EACH PARTY HERETO HEREBY 
IRREVOCABLY CONSENTS TO THE ASSERTION OF PERSONAL JURISDICTION BY SUCH COURTS 
OVER SUCH PARTY FOR THE LIMITED PURPOSES OF A SUIT ARISING IN CONNECTION WITH 
THIS AGREEMENT, BUT NEITHER SUCH PARTY WAIVES REQUIREMENT FOR SERVICE OF 
PROCESS IN THE MANNER PRESCRIBED BY LAW. THE FOREGOING SHALL NOT BE DEEMED TO 
NEGATE THE PROVISIONS OF SECTION 24 ABOVE REQUIRING ARBITRATION BY THE 
PARTIES IN CONNECTION HEREWITH.

     26.  EXPORT CONTROL LAWS.  All shipments made by SERCEL to Mitcham or 
third parties shall at all times be subject to the export control laws and 
regulations of the United States of America, as such laws shall be amended 
from time to time. Mitcham agrees that it shall not assist in the disposition 
of US origin SERCEL Products, by way of transshipment, reexport, diversion or 
otherwise, except as said laws and regulations may expressly permit.

     27.  COMMERCIAL REPRESENTATION AGREEMENT. On or about the Effective 
Date, it is anticipated that SERCEL and Mitcham (or its affiliate) will enter 
into a Commercial Representation Agreement (the "Representation Agreement") 
pursuant to which Mitcham (or its affiliate) shall have the exclusive right 
to market the Products in Canada.  Based upon the commission structure of 
SERCEL Products in the Representation Agreement, as compared to the pricing 
structure contained herein, it may be more beneficial for Mitcham (or its 
affiliate) to purchase the Products (typically components and not entire 
systems) from SERCEL and lease them as contemplated under this Agreement than 
it is for Mitcham to act as agent for the sale of SERCEL Products to a 
customer pursuant to the Representation Agreement. Accordingly, in any 
situation in which a proposed customer within Canada comes to Mitcham for the 
Products, Mitcham agrees that it will make a good faith determination as to 
whether the customer wants to lease SERCEL Products with possible option to 
buy at a later date (which contract should properly come under this 
Agreement) or actually buy the SERCEL Products using some special financing 
which might involve leasing (which contract should properly come under the 
Representation Agreement). Mitcham acknowledges that only customers that 
purchase the Products from SERCEL are entitled to the benefit of SERCEL's 
warranty, while customers that purchase SERCEL Products from Mitcham (or its 
affiliate) following the lease of the Products will not receive a warranty 
from SERCEL; however, SERCEL agrees to consider the granting of a warranty to 
lease/purchase customers on a case by case basis.

     28.  STANDARD OF BUSINESS CONDUCT. Mitcham agrees not to pay any 
commissions, fees or grant any rebates to any employee or officer of any 
proposed customer or its affiliates or favor employees or officers of such 
proposed customer with gifts or entertainment of significant costs or value 
or enter into any business arrangements with employees or officers of any 
such proposed customer, other than as a representative of that proposed 
customer, without the proposed customer's prior written approval.

     29.  WAIVER.  The failure of a party to insist upon strict performance 
of any provision of this Agreement shall not constitute a waiver of, or 
estoppel against asserting, the right to require performance in the future. A 
waiver or estoppel in any one instance shall not constitute a waiver or 
estoppel with respect to a later breach.



                                     12

<PAGE>

     30.  SEVERABILITY.  If any of the terms and conditions of this Agreement 
are held by any court of competent jurisdiction to contravene, or to be 
invalid under, the laws of any political body having jurisdiction over the 
subject matter hereof, such contravention or invalidity shall not invalidate 
the entire Agreement.  Instead, this Agreement shall be construed by reforming
the particular offending provision or provisions held to be invalid so that 
it or they are valid and enforceable while remaining as faithful as possible 
to the original intent of the provision or provisions, the rights and 
obligations of the parties shall be construed and enforced accordingly, and 
this Agreement shall remain in full force and effect.

     31.  CONSTRUCTION.  The headings in this Agreement are inserted for 
convenience and identification only and are not intended to describe, 
interpret, define, or limit the scope, extent, or intent of this Agreement or 
any other provision hereof. Whenever the context requires, the gender of all 
words used in this Agreement shall include the masculine, feminine, and 
neuter, and the number of all words shall include the singular and the plural.

     32.  COUNTERPART EXECUTION.  This Agreement may be executed in any 
number of counterparts with the same effect as if all the parties had signed 
the same document.  All counterparts shall be construed together and shall 
constitute one and the same instrument.

     33.  CUMULATIVE RIGHTS. The rights and remedies provided by this 
Agreement are cumulative, and the use of any right or remedy by any party 
shall not preclude or waive its right to use any or all other remedies. These 
rights and remedies are given in addition to any other rights a party may 
have by law, statute, in equity or otherwise.

     34.  RELIANCE.  All factual recitals, covenants, agreements, 
representations and warranties made herein shall be deemed to have been 
relied on by the parties in entering into this Agreement.

     35.  NO THIRD PARTY BENEFICIARY.  Any agreement herein contained, 
express or implied, shall be only for the benefit of the undersigned parties 
and their permitted successors and assigns, and such agreements and 
assumption shall not inure to the benefit of the obligees of any other party, 
whomsoever, it being the intention of the undersigned that no one shall be 
deemed to be a third party beneficiary of this Agreement.

     36.  DRAFTING PARTY. This Agreement expresses the mutual intent of the 
parties to this Agreement. Accordingly, regardless of the preparing party, 
the rule of construction against the drafting party shall have no application 
to this Agreement.

     37.  TIME IS OF THE ESSENCE.  Time is of the essence with respect to all 
provisions of this Agreement.

     38.  INCORPORATION OF SCHEDULES.  All schedules attached to this 
Agreement are incorporated into this Agreement as fully as if stated within 
the body of this Agreement.



                                     13

<PAGE>

     IN WITNESS WHEREOF, this Agreement has been executed on behalf of the 
parties by their duly authorized representatives as of the date first written 
above.

                                       SERCEL:

                                       SERCEL S.A.


                                       By: /s/ Thierry LeRoux
                                          ------------------------------------
                                          Thierry LeRoux, Chairman and Chief 
                                          Executive Officer


                                       MITCHAM:

                                       MITCHAM INDUSTRIES, INC.


                                       By: /s/ Billy F. Mitcham, Jr.
                                          ------------------------------------
                                          Billy F. Mitcham, Jr., President









                                     14


<PAGE>

                                  SCHEDULE 1

                                              SERCEL SN388

- --------------------------------------------------------------------------------
       P/N                                    DESCRIPTION
- --------------------------------------------------------------------------------

                                       SN388 COMPLETE CENTRAL UNIT
                          ------------------------------------------------------
   1AAA071417B            SN388 PAM/LAPTOP HCI
   1AAA071417C            SN388 PAM DSCSI/LAPTOP HCI
   1AAA071418A            SN388 PAM/DESKTOP HCI
   1AAA071418B            SN388 PAM DSCSI/DESKTOP HCI
   1AAD073554A            SN388 APM480/DESKTOP HCI
   1AAD073554B            SN388 APM 480/30 DSCSI/DESKTOP HCI
   1AAJ072970A            SN388 APM600/DESKTOP HCI
   1AAJ072970B            SN388 APM600 DSCSI/DESKTOP HCI
   1AAH071422B            SN388 APM1200/DESKTOP HCI
   1AAH071422C            SN388 APM1200 DSCSI/DESKTOP HCI

                                   SN388 PORTABLE ACQUISITION MODULE (PAM)
                          ------------------------------------------------------
   1AAA070228A            SN388 PAM MODULE 1200 CHANNELS
   1AAA070228B            SN388 PAM DCSI MODULE 1200 CHANNELS

                                   SN388 ACQUIS. AND PROCES. MODULE (APM)
                          ------------------------------------------------------
   1AAD073553A            SN388 APM MODULE 480 CH/30SEC
   1AAD073553B            SN388 APM MODULE 480/30 DSCSI
   1AAJ072969A            SN388 APM MODULE 600 CH/40SEC
   1AAJ072969B            SN388 APM MODULE 600/40 DSCSI
   1AAH070235B            SN388 APM MODULE 1200 CH/40SEC
   1AAH070235C            SN388 APM MODULE 1200/40 DSCSI

                                          SN388 PAM/APM OPTIONS
                          ------------------------------------------------------
   1A11073551A            SN388 U.P.S.
   1A10070935A            SN388 PAM ASSEMBLY PARTS
   1A11070933A            SN388 APM ASSEMBLY PARTS

                                  SN388 MULTI CCU MODULE INTERCONNECTION
                          ------------------------------------------------------
   1AAI072480A            SN388 2CCU MULTIMODULE SET
   1AAI072481A            SN388 3CCU MULTIMODULE SET
   1AAI072482A            SN388 4CCU MULTIMODULE SET

                                 SN388 LAPTOP HUMAN COMPUTER INTERF.(HCI)
                          ------------------------------------------------------
   1A10071172B            HC1388 LAPTOP WORK STATION
     3170110              HCI388 CD-ROM READER

                                          SN388 LAPTOP OPTIONS
                          ------------------------------------------------------
   790071769A             SN388 PORTABLE CONTAINER
   1A12071088A            HCI385 LAPTOP 12/18VDC PWR SPLY

<PAGE>

                                              SERCEL SN388

- --------------------------------------------------------------------------------
       P/N                                    DESCRIPTION
- --------------------------------------------------------------------------------

                                  SN388 DESKTP HUMAN COMPUT. INTERF.(HCI)
                          ------------------------------------------------------
   1A11071010A            HCI388 DESKTOP WORK STATION
     3170132              GX BOARD FOR 2ND SCREEN
     3170110              HCI388 CD-ROM READER

                                          SN388 HCI ASSEMBLY PARTS
                          ------------------------------------------------------
   1A11072933A            HCI388 SCREEN+PROCES.ASSY.PART
   1A11071235A            HCI388 CD+CARTR.ASSY.PARTS

                                               SN388 PRINTER
                          ------------------------------------------------------
   1A10074142A            SN388 LAPTOP PRINTER
   1A11074081A            SN388 DESKTOP PRINTER

                                          SN388 LAND FIELD UNITS
                          ------------------------------------------------------
   1A45069496A            SN388 CROSSING STATION UNIT (CSU)
   1A40069228A            SN388 STATION UNIT (SU-1)
   1A81074572A            SN388 1-CH STATION UNIT B (SU-1/B)
   1A40069230A            SN388 STATION UNIT (SU-6)
   1A80074216A            SN388 6-CH STATION UNIT B (SU-6/B)
   1ABA073451A            SN388 STATION UNIT (SU-6/0,5ms)
   1A41069500A            SN388 POWER STATION UNIT (PSU)
   1A82074479A            SN388 6-CH POWER STATION UNIT (PSU-6)
   1A42071696A            SN388 TRANSVERSE REPEATER UNIT (TRU)
   1A44070142A            SN388 REPEATER UNIT FOR SU-1

                                         SN388 SUBMERSIBLE UNITS
                          ------------------------------------------------------
   1A45074884A            SUBMERSIBLE CROSSING STAT. UNIT (CSU/S)
   1A40074933A            SUBMERSIBLE STATION UNIT (SU-6/S)
   1A80074878A            SUBMERSIBLE STATION UNIT (SU-6B/S)
   1A41074880A            SUBMERSIBLE POWER STATION UNIT (PSU/S)
   1A82074881A            6-CH SUBMERSIBLE STATION UNIT (PSU-6/S)
   1A81074879A            1-CH SUBMERSIBLE STATION UNIT (SU-1B/S)


<PAGE>

                                              SERCEL SN388

- --------------------------------------------------------------------------------
       P/N                                    DESCRIPTION
- --------------------------------------------------------------------------------

                                      SN388 VEHICLE TRACKING SYSTEM
                          ------------------------------------------------------
   1A17074840A            SN388 MASTER RECEIVER UNIT (M-MRU)
   1A17075015A            SN388 SLAVE RECEIVER UNIT (S-MRU)
   1A17075237A            0 dB PLASTIC ROOF ANTENNA SET
   1A17075238A            0 dB MAGNETIC ANTENNA SET
   1A17075077A            5 dB ANTENNA FOR S-MRU
   1A11071010A            WORKSTATION MONITOR FOR MRU
   1A17075138A            VEHICLE TRACKING SOFTWARE

                                        SN388 PERIPHERAL DEVICES
                          ------------------------------------------------------
   1ACB070237B            SN388 TEST AND MAINTENANCE SYSTEM
   1ACA070236B            SN388 LINE TESTER (LT388)
   1A50071188A            WINTERIZED SN388 LINE TESTER DISPLAY

                                         SN388 SPARE PART KIT
                          ------------------------------------------------------
   1A10075191A            SN388 SPARE BOARDS FOR PAM (1ST LEV.)
   1A10070238A            SN388 COMPLETE SET OF PAM BOARDS
   1A10070238B            SN388 COMPLETE SET OF PAM DSCSI BOARDS
   1A11075192A            SN388 SPARE BOARDS FOR APM480 (1ST LEV.)
   1A11070239A            SN388 COMPLETE SET APM480 BOARDS
   1A11070239B            SN388 COMPLETE SET OF APM480 SCSI BOARDS
   1A11075193A            SN388 SPARE BOARDS APM600/1200 (1ST LEV)
   1A11070240A            SN388 COMPLETE SET APM600/1200 BOARDS
   1A11070240B            SN388 COMPL SET APM600/1200 DSCSI BOARDS
   1ABE070999A            SN388 SU-6 SPARE PART (COMPONENT LEV.)
   1ABE070998A            SN388 SU-1 SPARE PART (COMPONENT LEV.)
   1A58071433A            SN388 TMS SPARE PART (COMPONENT LEV.)
   1A21070251A            SN388 TOOL SET FIELD UNIT
   1A57070918B            SN388 LT SPARE PART (COMPONENT LEV.)


<PAGE>


                                  SERCEL VE416
- ------------------------------------------------------------------------
    P/N                           DESCRIPTION
- ------------------------------------------------------------------------
                           VE416 BASIC CONFIGURATION
              ----------------------------------------------------------
17AA068898A     VE416 DIGITAL PILOT GENERATOR (DPG)
17AA073982A     VE416 DPG FOR GPS REAL TIME
17AB068899A     VE416 DIGITAL SERVO DRIVE (DSD)
17AB073983A     VE416 DSD FOR GPS REAL TIME
              ----------------------------------------------------------
                             VE416 ASSEMBLY PARTS
              ----------------------------------------------------------
1723064118      VE416 ASSY PARTS FOR DPG
              ----------------------------------------------------------
                               VE416 SPARE PARTS
              ----------------------------------------------------------
1720064131      VE416 DSD-DPG SPARE PART COMPONENT LEVEL
1721064132A     VE416 DSD-DPG SPARE PART BOARD LEVEL
1721074096A     VE416 DSD-DPG/GPS SPARE PART BOARD LEVEL
1713063609A     VE416 SPARE AVS
              ----------------------------------------------------------
                                 VE416 OPTIONS
              ----------------------------------------------------------
  3150038       VE416 PRINTER 12/220V
1724066941      VE416 VIBRATOR HARNESS SET
              ----------------------------------------------------------
                         VE416 VQC BASIC CONFIGURATION
              ----------------------------------------------------------
1BAB075257A     VE416 VIBRATOR QUALITY CONTROL (VQC 88)
              ----------------------------------------------------------
                           VE416 VQC SOFTWARE PACKAGE
              ----------------------------------------------------------
1BAA073557A     VE416 QC VIBROSEIS SOFTWARE
              ----------------------------------------------------------
                      VE416 GPS POSITIONING STAND ALONE KIT
              ----------------------------------------------------------
1725074332A     VE416 GPS POSITIONING STAND ALONE SET
- ------------------------------------------------------------------------



<PAGE>


                              SERCEL TAPE TRANSPORT
- ------------------------------------------------------------------------
    P/N                           DESCRIPTION
- ------------------------------------------------------------------------
                          TT CD488-B CARTRIDGE DRIVE
              ----------------------------------------------------------
1649072919A     CD488-B CARTRIDGE DRIVE
              ----------------------------------------------------------
                             TT CD488-B SPARE PARTS
              ----------------------------------------------------------
  3120036       CD488-B SPARE DRIVE ONLY
  3530194       CD488-B POWER SUPPLY
1617071891A     CD480 SCSI UPGRADE KIT
- ------------------------------------------------------------------------

<PAGE>

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- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
070000333      FLUTE 6M MR 6 SORTIES HERMA4       ESPACES DE 1M BC16S
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 6 M
              6 M, 6 SORTIES CONNECTEURS          6 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 1 M.             SPACED OF 1 M
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC 16S A CHAQUE         CONNECTORS BC16S AT EACH END
              EXTREMITE
- -------------------------------------------------------------------------------
070000334      FLUTE 12OM MR 6 SORTIES HERMA4     ESPACEES DE 20M BC16S
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTHS 120M
              120M, 6 SORTIES CONNECTEURS         6 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 20M.             SPACED OF 20 M
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC16S A CHAQUE          CONNECTORS BC16S AT EACH END
              EXTREMITE 
- -------------------------------------------------------------------------------
070000356      FLUTE 120M MR 3 SORTIES HERMA4     ESPACEES 40M  BC16S
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 120M
              120M, 3 SORTIES CONNECTEURS         3 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 40M.             SPACED OF 40M
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC16S A CHAQUE          CONNECTORS BC16S AT EACH END
              EXTREMITE
- -------------------------------------------------------------------------------
070000357      FLUTE 120M MR 3 SORTIES HERMA4     ESPACEES DE 40M BC16S + BC16P
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 120M
              120M, 3 SORTIES CONNECTEURS         3 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 40M.             SPACED OF 40M
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC16S ET BC16P          CONNECTORS BC16S AND BC16P
- -------------------------------------------------------------------------------
070000343      FLUTES 135M, MR, 3 SORTIES H4      ESPACEES 45M, BC16S/BC16P
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 135M
              135M, 3 SORTIES CONNECTEURS         3 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 45M.             SPACED OF 45M.
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC16S ET BC16P.         CONNECTORS BC16S ET BC16P
- -------------------------------------------------------------------------------
070000344     FLUTES 135M, MR, 3 SORTIES H4      ESPACEES 45M, BC16S/BC16S
             CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 135M
             135M, 3 SORTIES CONNECTEURS         3 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 45M.             SPACED OF 45M
             CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
             CONNECTEURS BC16S A CHAQUE          CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000354     FLUTE 140M LA 2 SORTIES HERMA4      ESPACEES DE 70M BC16S
             CABLE LIGNE SN 388 LONGUEUR          SN 388 LINE CABLE LENGTH 140M
             140M, 2 SORTIES CONNECTEURS          2 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 70M.              SPACED OF 70M
             CABLE LOW ATTENUATION                CABLE LOW ATTENUATION
             CONNECTEURS EC16S A CHAQUE           CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------

<PAGE>

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- -------------------------------------------------------------------------------
   Code
- -------------------------------------------------------------------------------
070000355     FLUTE 140M LA 2 SORTIES HERMA4    ESPACEES DE 70M BC16S + BC16P
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 140M
             140M, 2 SORTIES CONNECTEURS        2 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 70M.            SPACED OF 70M
             CABLE LOW ATTENUATION              CABLE LOW ATTENUATION
             CONNECTEURS BC16S ET BC16P         CONNECTORS BC16S AND BC16P
- -------------------------------------------------------------------------------
070000335     FLUTE 144M MR 6 SORTIES HERMA4    ESPACEES 24M BC16S
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 144M
             144M, 6 SORTIES CONNECTEURS        6 TAKE OUT CONNECTORS HERMA4
             CABLE MEDIUM RANGE                 CABLE MEDIUM RANGE
             CONNECTEURS BC16S A CHAQUE         CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000340     FLUTES 150M, MR, 6 SORTIES H4     ESPACEES 25M, CONNECTOR BC16S
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 150M
             150M, 6 SORTIES CONNECTEURS        6 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 25M.            SPACED OF 25M
             CABLE MEDIUM RANGE                 CABLE MEDIUM RANGE
             CONNECTEURS BC16S A CHAQUE         CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000341     FLUTES 150M, MR, 3 SORTIES H4     ESPACEES 50M, CONNEC. BC16S/P
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 150M
             150M, 3 SORTIES CONNECTEURS        3 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 50M.            SPACED OF 50M
             CABLE MEDIUM RANGE                 CABLE MEDIUM RANGE
             CONNECTEURS BC16S ET BC16P.        CONNECTORS BC16S AND BC16P
- -------------------------------------------------------------------------------
070000342     FLUTES 150M, MR, 3 SORTIES H4     ESPACEES 50M, BC16S/BC16S
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 150M
             150M, 3 SORTIES CONNECTEURS        3 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 50M.            SPACED OF 50M
             CABLE MEDIUM RANGE                 CABLE MEDIUM RANGE
             CONNECTEURS BC16S A CHAQUE         CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000352     FLUTE 160M LA 2 SORTIES HERMA4     ESPACEES DE 80M  BC16S
             CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 160M
             160M, 2 SORTIES CONNECTEURS         2 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 80M.             SPACED OF 80M
             CABLE LOW ATTENUATION               CABLE LOW ATTENUATION
             CONNECTEURS EC16S A CHAQUE          CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000353     CABLE SN 388 160M LA 2 SORTIES     HERMA4 ESP. DE 80M BC16S+BC16P
             CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 160M
             160M, 2 SORTIES CONNECTEURS         2 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 80M.             SPACED OF 80M
             CABLE LOW ATTENUATION               CABLE LOW ATTENUATION
             CONNECTEURS BC16S ET BC16P          CONNECTORS BC16S AND BC16P
- -------------------------------------------------------------------------------




<PAGE>

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- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000339  FLUTES 180M, MR, 6 SORTIES H4     ESPACEES 30M, CONNECT. BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 180M
           180M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 30M.           SPACED OF 30M
           CABLE MEDIUM RANGE                CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000345  FLUTES 180, LOW, 3 SORTIES H4     ESPACEES 60M, BC16S/BC16P
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 180M
           180M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 60M.           SPACED OF 60M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S ET BC16P.       CONNECTORS BC16S AND BC16P
- --------------------------------------------------------------------------------
070000346  FLUTES 180M, LOW, 3 SORTIES H4    ESPACEES 60M, BC16S/BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 180M
           180M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 60M.           SPACED OF 60M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
- --------------------------------------------------------------------------------
070000336  FLUTE 186M, MR, 6 SORTIES H4      ESPACEES 31M, CONNECT. BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 186M
           186M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 31M.           SPACED OF 31 M
           CABLE MEDIUM RANGE                CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000144  FLUTE 195M LA 3 SORTIES HERMA4    ESPAC. 65M    BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 195M
           195M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 65M.           SPACED OF 65 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
- --------------------------------------------------------------------------------
070000330  FLUTE 195M LA 3 SORTIES HERMA4    ESP. 65M BC16S + BC16P
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 195M
           195M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 65M.           SPACED OF 65 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S ET BC16P        CONNECTORS BC16S AND BC16P
- --------------------------------------------------------------------------------
070000331  FLUTE 210M LA 3 SORTIES HERMA4    ESPAC. 70M   BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 210M
           210M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 70M.           SPACED OF 70 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------


<PAGE>

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- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000332  FLUTE 210M LA 3 SORTIES HERMA4    ESP. 70M BC16S + BC16P
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 210M
           210M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 70M.           SPACED OF 70 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S ET BC16P        CONNECTORS BC16S AND BC16P
- --------------------------------------------------------------------------------
070000516  FLUTE 225M, LA, 3 SORTIES H4      ESPACEES 75M, BC16S  BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 225M
           225M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 75M.           SPACED OF 75 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000327  FLUTE 240M MR 6 SORTIES HERMA4    ESP. 40M BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 240M
           240M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 40M.           SPACED OF 40 M
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000328  FLUTE 240M LA 3 SORTIES HERMA4    ESP. 80M BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 240M
           240M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 80M.           SPACED OF 80 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000329  FLUTE 240M LA 3 SORTIES HERMA4    ESPAC. 80M BC16S+BC16P
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 240M
           240M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 80M.           SPACED OF 80 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S ET BC16P        CONNECTORS BC16S AND BC16P
- --------------------------------------------------------------------------------
070000326  FLUTE 270M MR 6 SORTIES HERMA4    ESP. 45M BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 270M
           270M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 45M.           SPACED OF 45 M
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000325  FLUTE 300M MR 6 SORTIES HERMA4    ESP. 50M BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 300M
           300M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 50M.           SPACED OF 50 M
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------


<PAGE>

Cab.  PAGES AMET36              TARIFS                le: 17/04/96

Famille:  716  CABLE TRANSMISSION         S/Famille:  40  TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
070000423   FLUTE 300M MR 6 SORTIES  LRS     5501 ESPACEES 50M  BC16S
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 300M
           300M,  6 SORTIES CONNECTEURS      6 TAKE OUT CONNECTORS LRS 5501
           LRS 5501 ESPACEES DE 50M.         SPACED OF 50M.
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE

- -------------------------------------------------------------------------------
070000155   FLUTE 330M,  6 SORTIES HERMA4    ESPACEES DE 55M BC16S
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 330M
           330M,  6 SORTIES CONNECTEURS      6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 55M.           SPACED OF 55M.
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE

- -------------------------------------------------------------------------------
070000322   FLUTE 360M MR 6 SORTIES  LRS     5501 ESPACES DE 60M  BC16S
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 360M
           360M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS LRS 5501
           LRS 5501 ESPACEES DE 60M.         SPACED OF 60M.
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END

- -------------------------------------------------------------------------------
070000323   FLUTE 360M LR 6 SORTIES HERMA    4 ESPACEES DE 60M  BC16S 
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 360M
           360M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA 4
           HERMA 4 ESPACEES DE 60M.          SPACED OF 60M.
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END

- -------------------------------------------------------------------------------
070000324   FLUTE 390M LA 6 SORTIES HERMA4   ESPAC.  65M  BC16S
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 390M
           390M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 65M.           SPACED OF 65M.
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE

- -------------------------------------------------------------------------------
512220039   FLUTE 388 165m 3TO H4            ESPACES 55m-2 BC 16 S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 165M
           165M,  3 SORTIES CONNECTEURS      3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 55M.           SPACED OF 55M.
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END

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



<PAGE>

Cab.  PAGES AMET36              TARIFS                le: 17/04/96

Famille:  716  CABLE TRANSMISSION         S/Famille:  40  TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
512220040   FLUTE 388 165 m 3 TO H4          ESPACES 55m-BC16S+BC16P
           CABLE LIGNE SN388 LONGUEUR        SN 388 LINE CABLE LENGTH 165M
           165M,  3 SORTIES CONNECTEURS      3 TAKE OUTS CONNECTORS
           HERMA4 ESPACEES DE 55M.           HERMA4 SPACED OF 55M. CABLE
           CABLE MEDIUM RANGE.               MEDIUM RANGE  CONNECTORS
           CONNECTEURS BC16S ET BC16P        BC16S AND BC16P

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


<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 17/04/96

Famille: 716 CABLE TRANSMISSION       S/Famille: 40  TELEMETRIQUES 388
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000337  TRANSVERSE LONGUEUR SM            CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE LENGTH
           LONGUEUR 5M.                      5M
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000358  TRANSVERSE LG 10M  BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 10M5M.                   LENGTH 10 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000359  TRANSVERSE LONGUEUR 20M           CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 20M                      LENGTH 20 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000360  TRANSVERSE LONGUEUR 50M           CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 50M                      LENGTH 50 METERS
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000361  TRANSVERSE LONGUEUR 100M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 100M                     LENGTH 100 METERS
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000362  TRANSVERSE LONGUEUR 110M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 110M                     LENGTH 110 METERS
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000363  TRANSVERSE LONGUEUR 120M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 120M                     LENGTH 120 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000364  TRANSVERSE LONGUEUR 150M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 150M                     LENGTH 150 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000365  TRANSVERSE LONGUEUR 200M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 200M                     LENGTH 200 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------


<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 17/04/96

Famille: 716 CABLE TRANSMISSION       S/Famille: 40  TELEMETRIQUES 388
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
070000366  TRANSVERSE LONGUEUR 220M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 220 M                    LENGTH 220 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000367  TRANSVERSE LONGUEUR 250M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 250 M                    LENGTH 250 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000368  TRANSVERSE LONGUEUR 300M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 300 M                    LENGTH 300 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000369  TRANSVERSE LONGUEUR 320M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 320 M                    LENGTH 320 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000370  TRANSVERSE LONGUEUR 330M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 330 M                    LENGTH 330 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000371  TRANSVERSE LONGUEUR 350M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 350 M                    LENGTH 350 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000338  TRANSVERSE LONGUEUR 400M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 400 M                    LENGTH 400 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000372  TRANSVERSE LONGUEUR 450M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 450 M                    LENGTH 450 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000373  TRANSVERSE LONGUEUR 500M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 500 M                    LENGTH 500 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------

<PAGE>

Cab.  PAGES  AMET36          TARIFS                le: 17/04/96

Famille: 716 CABLE TRANSMISSION          S/Famille: 40  TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
070000374   TRANSVERSE LONGUEUR 550M         CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 550 M                    LENGTH 550 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000375   TRANSVERSE LONGUEUR 600M         CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 600 M                    LENGTH 600 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000376   TRANSVERSE LONGUEUR 800 M        CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 800 M                    LENGTH 800 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

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



<PAGE>

Cab.  PAGES  AMET36          TARIFS                le: 17/04/96

Famille: 716 CABLE TRANSMISSION          S/Famille: 40  TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
070000377   EXTENSION LONGUEUR 110M          CONNECTEURS BC16S
           CABLE EXTENSION SN 388            SN 388 EXTENSION CABLE
           LONGUEUR 110 M                    LENGTH 110 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000378   EXTENSION LONGUEUR 200M          CONNECTEURS BC16S
           CABLE EXTENSION SN 388            SN 388 EXTENSION CABLE
           LONGUEUR 200 M                    LENGTH 200 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000379   EXTENSION LONGUEUR 300M          CONNECTEURS BC16S
           CABLE EXTENSION SN 388            SN 388 EXTENSION CABLE
           LONGUEUR 300 M                    LENGTH 300 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000380   EXTENSION LONGUEUR 330M          CONNECTEURS BC16S
           CABLE EXTENSION SN 388            SN 388 EXTENSION CABLE
           LONGUEUR 330 M                    LENGTH 330 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
700000321   EXTENSION SN388 LONGUEUR 350M   CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 350 M                   LENGTH 350 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000381   EXTENSION LONGUEUR 400M         CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 400 M                   LENGTH 400 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000382   EXTENSION LONGUEUR 450M         CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 450 M                   LENGTH 450 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000383   EXTENSION LONGUEUR 500M         CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 500 M                   LENGTH 500 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000384   EXTENSION LONGUEUR 600M         CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 600 M                   LENGTH 600 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

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



<PAGE>

Cab. PAGES AMET36        TARIFS                       le: 17/04/96

Famille: 716 CABLE TRANSMISSION          S/Famille: 40 TELEMETRIQUES 388
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000385   EXTENSION LONGUEUR 700M            CONNECTEURS BC16S
            CABLE EXTENSION SN 388             SN 388 EXTENSION CABLE
            LONGUEUR 700 M                     LENGTH 700 METERS
            CONNECTEURS BC16S A CHAQUE         BC16S CONNECTORS ON BOTH SIDE
            EXTREMITE
- --------------------------------------------------------------------------------
070000386   EXTENSION LONGUEUR 800M            CONNECTEURS BC16S
            CABLE EXTENSION SN 388             SN 388 EXTENSION CABLE
            LONGUEUR 800 M                     LENGTH 800 METERS
            CONNECTEURS BC16S A CHAQUE         BC16S CONNECTORS ON BOTH SIDE
            EXTREMITE
- --------------------------------------------------------------------------------



<PAGE>

Cab. PAGES AMET36        TARIFS                       le: 17/04/96

Famille: 726 BRETELLE                    S/Famille: 20 GEOPHONES TERRESTRES
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000128    BRET. 6 SM4ULD BG2 POINTE 4CM     ESPAC. 15M TETE QUEUE 10M H4
            BRETELLE DE 6 GEOPHONES SM4ULD     STRING OF 6 GEOPHONES SM4ULD
            FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
            BOITIER TYPE BG2 POINTE 4CM        HOUSING TYPE BG2 SPIKE 4 CM
            RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
            DE 15M BRIN DE TETE 10M, BRIN      15 M. LEAD IN 10 M, TAIL 10 M
            DE QUEUE 10M TERMINE PAR UN        ENDED BY CONNECTOR HERMA4
            CONNECTEUR HERMA4                  CABLE 3 WIRES WITH D LOOPS
            CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
            ANNEAUX ESPACES DE 1.3M            WIRING 1x6 SERIE
            EPINGLE DE RAMASSAGE
            CABLAGE 1x6
- --------------------------------------------------------------------------------
070000319    BRET. 6 SM4ULD BG2 TRIPOD         ESP 5M TETE 10M QUEUE 10M HERMA4
            BRETELLE DE 6 GEOPHONES SM4ULD     STRING OF 6 GEOPHONES SM4ULD
            FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
            BOITIER TYPE BG2 AVEC TRIPODE      HOUSING TYPE BG2 WITH TRIPOD
            RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
            DE 10M BRIN DE TETE 10M, BRIN      10 M. LEAD IN 10 M, TAIL 10 M
            DE QUEUE 10M TERMINE PAR UN        ENDED BY CONNECTOR HERMA4
            CONNECTEUR HERMA4                  CABLE 3 WIRES WITH D LOOPS
            CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
            ANNEAUX ESPACES DE 1.3M            WIRING 1x6 SERIE
            EPINGLE DE RAMASSAGE
            CABLAGE 1x6
- --------------------------------------------------------------------------------
070000451    BRET. 6 SM4ULD BG2 POINTE 8CM     ESP. 15M TETE QUEUE 15M H4
            BRETELLE DE 6 GEOPHONES SM4ULD     STRING OF 6 GEOPHONES SM4ULD
            FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
            BOITIER TYPE BG2 POINTE 8CM        HOUSING TYPE BG2 SPIKE 8 CM
            RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
            DE 15M BRIN DE TETE 15M, BRIN      15 M. LEAD IN 15 M, TAIL 15 M
            DE QUEUE 15M TERMINE PAR UN        ENDED BY CONNECTOR HERMA4
            CONNECTEUR HERMA4                  CABLE 3 WIRES WITH D LOOPS
            CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
            ANNEAUX ESPACES DE 1.3M            WIRING 1x6 SERIE
            EPINGLE DE RAMASSAGE
            CABLAGE 1x6
- --------------------------------------------------------------------------------
070000522    BRET 6 SM4ULD BG2 POINTE 8 CM     ESP. 5M TETE 2.5M
            BRETELLE DE 6 GEOPHONES SM4ULD     STRING OF 69 GEOPHONES SM4ULD
            FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
            BOITIER TYPE BG2 POINTE 8CM        HOUSING TYPE BG2 SPIKE 8 CM
            RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
            DE 5M BRIN DE TETE 2.5M            5 M. LEAD IN 2.5 M
            TERMINE PAR UN CONNECTEUR          ENDED BY CONNECTOR HERMA4
            HERMA4                             CABLE 3 WIRES WITH D LOOPS
            CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
            ANNEAUX ESPACES DE 1.3M            WIRING SERIES
            EPINGLE DE RAMASSAGE
            CABLAGE SERIE
- --------------------------------------------------------------------------------



<PAGE>

Cab. PAGES AMET36                         TARIFS                  le: 17/04/96

Famille: 726  BRETELLE                        S/Famille: 20 GEOPHONES TERRESTRES
- -------------------------------------------------------------------------------
   Code
- -------------------------------------------------------------------------------
070000145     BRET. 9 SM4ULD BG2 POINTE 8CM      ESP 5M TETE 10M HERMA4
             BRETELLE DE 9 GEOPHONES SM4ULD      STRING OF 9 GEOPHONES SM4ULD
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE 10M,              5 M. LEAD IN 10 M
             TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR HERMA4
             HERMA4                              CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------
070000146     BRET. 9 GSC20D BG2 POINTE 8CM      ESP. 5M TETE 10M HERMA4
             BRETELLE DE 9 GEOPHONES GSC20D      STRING OF 9 GEOPHONES GSC20D
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE 10M,              5 M. LEAD IN 10 M
             TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR HERMA4
             HERMA4                              CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------
070000633     BRET. 9 SM4U LD BG2 POINTE 8CM     TETE QUEUE 10M HERMA4
             BRETELLE DE 9 GEOPHONES SM4ULD      STRING OF 9 GEOPHONES SM4ULD
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE, QUEUE 10         5 M. LEAD IN AND TAIL 10 M
             M TERMINE PAR UN CONNECTEUR         ENDED BY CONNECTOR HERMA4
             HERMA4                              CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------


<PAGE>

Cab. PAGES AMET36                         TARIFS                  le: 17/04/96

Famille: 726  BRETELLE                        S/Famille: 20 GEOPHONES TERRESTRES
- -------------------------------------------------------------------------------
   Code
- -------------------------------------------------------------------------------
070000147     BRET. 9 SM4ULD BG2 POINTE 8CM      ESP 5M TETE 10M MUELLER CLIP
             BRETELLE DE 9 GEOPHONES SM4ULD      STRING OF 9 GEOPHONES SM4ULD
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE 10M,              5 M. LEAD IN 10 M
             TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR MUELLER CLIP
             MUELLER CLIP                        CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------
070000148     BRET. 9 GSC20DX BG2 POINTE 8CM     ESP 5M TETE 10M MUELLER CLIP
             BRETELLE DE 9 GEOPHONES GSC20D      STRING OF 9 GEOPHONES GSC20DX
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE 10M,              5 M. LEAD IN 10 M
             TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR MUELLER CLIP
             MUELLER CLIP                        CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------




<PAGE>

Cab. PAGES AMET36       TARIFS               le: 17/04/96

Famille: 726 BRETELLE           S/Famille: 20  GEOPHONES TERRESTRES
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000115  BRET. 12 SM4ULD BG2 POINTE 8CM      ESP. 5M TETE 10M HERMA4
           BRETELLE DE 12 GEOPHONES SM4ULD     STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 10M,             5 M. LEAD IN 10 M
           TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR HERMA4
           HERMA4                              CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 3x4
           EPINGLE DE RAMASSAGE
           CABLAGE 3x4
- --------------------------------------------------------------------------------
070000129  BRET. 12 SM4ULD BG2 POINTE 8CM      ESP. 5M QUEUE TETE 10M HERMA4
           BRETELLE DE 12 GEOPHONES SM4ULD     STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 10M,             5 M. LEAD IN 10 M, TAIL 10M
           BRIN DE QUEUE 10M TERMINE PAR       ENDED BY CONNECTOR HERMA4
           UN CONNECTEUR HERMA4                CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 3x4
           EPINGLE DE RAMASSAGE
           CABLAGE 3x4
- --------------------------------------------------------------------------------
070000142  BRET. 12 SM4ULD BG2 TRIPODE         ESP. 10M TETE QUEUE 15M 2H4
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 AVEC TRIPODE       HOUSING TYPE BG2 WITH TRIPOD
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 10M BRIN DE TETE 15M,            10 M. LEAD IN 15 M, TAIL 15M
           BRIN DE QUEUE 15M TERMINE PAR       ENDED BY TWO CONNECTORS HERMA4
           DEUX CONNECTEUR HERMA4              CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 3x4
           EPINGLE DE RAMASSAGE
           CABLAGE 3x4
- --------------------------------------------------------------------------------
070000151  BRET. 12 GSC20D BG2 POINTE 8CM      ESP. 5M TETE 10M HERMA4
           BRETELLE DE12 GEOPHONES GSC20D      STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 10M,             5 M. LEAD IN 10 M ENDED
           TERMINE PAR UN CONNECTEUR           BY CONNECTOR HERMA4
           HERMA4                              CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 1x12
           EPINGLE DE RAMASSAGE
           CABLAGE 12x1
- --------------------------------------------------------------------------------


<PAGE>

Cab. PAGES AMET36       TARIFS               le: 17/04/96

Famille: 726 BRETELLE           S/Famille: 20  GEOPHONES TERRESTRES
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000152  BRET. 12SM4ULD  BG2 POINTE 8CM      ESP. 5M TETE 5M QUEUE 5M H4
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE ET QUEUE 5M      5 M. LEAD IN 5M TAIL 5M ENDED
           TERMINE PAR                         BY CONNECTOR HERMA4
           UN CONNECTEUR HERMA4                CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 1x12
           EPINGLE DE RAMASSAGE
           CABLAGE 12x1
- --------------------------------------------------------------------------------
070000318  BRET. 12 SM4U LD POINTE 8CM +       TRIPOD ESPAC. 5M  HERMA 4  10M
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM ET      HOUSING TYPE BG2 SPIKE 8 CM
           TRIPODE RESISTANCE 1.21KOHM         AND TRIPOD RESISTOR 1.21KOHM
           ESPACES DE 5M BRIN DE TETE 10M      INTERVAL 5M LEAD IN 10M ENDED
           TERMINE PAR                         BY CONNECTOR HERMA4
           UN CONNECTEUR HERMA4                CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 4x3
           EPINGLE DE RAMASSAGE
           CABLAGE 4x3
- --------------------------------------------------------------------------------
070000320  BRET. 12 SM4ULD BG2 8CM R=375       ESP. 12M TETE 12M HERMA4
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 12M BRIN DE TETE 12M             12 M. LEAD IN 12M ENDED
           TERMINE PAR                         BY CONNECTOR HERMA4
           UN CONNECTEUR HERMA4                CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 3x4
           EPINGLE DE RAMASSAGE
           CABLAGE 3x4
- --------------------------------------------------------------------------------
070000450  BRET. 12 SM4U LD TRIPODE ESP.       10M TETE QUEUE 15M 2H4  R=1KH
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 AVEC TRIPODE       HOUSING TYPE BG2 WITH TRIPOD
           RESISTANCE 1.00KOHM, ESPACES        RESISTOR 1.00 KOHM, INTERVAL
           DE 10M BRIN DE TETE 15M,            10 M. LEAD IN 15 M, TAIL 15M
           BRIN DE QUEUE 15M TERMINE PAR       ENDED BY TWO CONNECTORS HERMA4
           DEUX CONNECTEUR HERMA4              CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 12 IN SERIES
           EPINGLE DE RAMASSAGE
           CABLAGE 12x1
- --------------------------------------------------------------------------------

<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 17/04/96

Famille: 726 BRETELLE                 S/Famille: 20 GEOPHONES TERRESTRES
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000149  BRET. 12 GSC20D BG2 POINTE 8CM     ESP. 5M TETE 10M MUELLER CLIP
           BRETELLE DE12 GEOPHONES GSC20D     STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
           BOITIER TYPE BG2 POINTE 8CM        HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 10M,            5 M. LEAD IN 10 M ENDED
           TERMINE PAR                        BY CONNECTOR MUELLER CLIP
           UN CONNECTEUR MUELLER CLIP         CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
           ANNEAUX ESPACES DE 1.3M            WIRING 1X12
           EPINGLE DE RAMASSAGE
           CABLAGE 12X1
- --------------------------------------------------------------------------------
07000150   BRET. 12 GSC20D BG2 POINTE 8CM     ESP. 5M TETE 5M MUELLER CLIP
           BRETELLE DE12 GEOPHONES GSC20D     STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
           BOITIER TYPE BG2 POINTE 8CM        HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 5 M,            5 M. LEAD IN 5 M ENDED
           TERMINE PAR                        BY CONNECTOR MUELLER CLIP
           UN CONNECTEUR MUELLER CLIP         CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
           ANNEAUX ESPACES DE 1.3M            WIRING 1X12
           EPINGLE DE RAMASSAGE
           CABLAGE 12X1
- -------------------------------------------------------------------------------

                                      82

<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 24/04/96

Famille: 726 BRETELLE                 S/Famille: 30 GEOPHONES MARAIS
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000424  BRET. MARAIS 12 GSC20DX EM2      8CM TETE 5M H4 ESP. 5M DES.0.65
           BRETELLE DE12 GEOPHONES GSC20D   STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10HZ MONTES DANS       FREQUENCY 10 HZ. ASSEMBLED IN
           BOITIER TYPE BM2 POINTE 8CM      HOUSING TYPE BM2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES     RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 5 M.          5 M. LEAD IN 5 M ENDED BY
           TERMINE PAR UN CONNECTEUR        CONNECTOR HERMA4, DROP 0.65M
           HERMA 4, DESCENTE 0.65M          CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC         SPACED 1.3M. CARRYING HASP
           ANNEAUX ESPACES DE 1.3M          WIRING 1X12
           EPINGLE DE RAMASSAGE
           CABLAGE 12X1
- --------------------------------------------------------------------------------
070000438   BRET. MAR. 12 GSC20D BM2 15CM   ESP. 5M DESC. 2.5M TETE 5M H4
           BRETELLE DE12 GEOPHONES GSC20D   STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10 HZ MONTES DANS      FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BM2 POINTE 15 CM    HOUSING TYPE BM2 SPIKE 15 CM
           RESISTANCE 1.21KOHM, ESPACES     RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 5 M,          5 M. LEAD IN 5 M ENDED BY
           TERMINE PAR UN CONNECTEUR        CONNECTOR HERMA4, DROP 2.5 M
           HERMA 4, DESCENTE 2.5 M          CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC         SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M          WIRING 1x12
           EPINGLE DE RAMASSAGE
           CABLAGE 12x1
- --------------------------------------------------------------------------------

                                      83

<PAGE>
FAMILLE:  716 CABLE TRANSMISSION                   S/FAMILLE:  20  ADAPTATEURS
- ------------------------------------------------------------------------------
   CODE
- ------------------------------------------------------------------------------
070000475    ADAPTATEUR 12  10S/2  HERMA4
- ------------------------------------------------------------------------------
070000476    ADAPTATEUR 12  35/3MCA
- ------------------------------------------------------------------------------
070000478    ADAPTATEUR 12  35/2  HERMA4
- ------------------------------------------------------------------------------
070000481    ADAPTATEUR 12  35/MCA
- ------------------------------------------------------------------------------
070000473    ADAPTATEUR  BC35/2HERMA4
- ------------------------------------------------------------------------------
070000474    HERMA4/2  HERMA4
- ------------------------------------------------------------------------------
070000477    ADAPTATEUR  HERMA4/3HERMA4
- ------------------------------------------------------------------------------
070000479    HERMA4/ HERMA4 LONGUEUR  50M
- ------------------------------------------------------------------------------
070000480    ADAPTATEUR  HERMA4/MCA
- ------------------------------------------------------------------------------



Vibrators

     AMG  P  23/M27
     AMG  P  28/M28




                                                                            24

<PAGE>

                                 OPSEIS EAGLE

1.   MAIN EQUIPMENT
     A.  Opseis Eagle Universal Central
         Recording Station (CRS) Compatible for
         Use with all energy sources (2005450-999)
         Equipment consist of:
         -  OPSEIS Seismic Processing Unit Model 915 (2005264-002)
            (Includes 8 - 2 Meg DRP Boards)
         -  OPSEIS Operator Display Terminal Model 930 (2006009-001)
         -  OPSEIS 3480 1/2" Cartridge Tape Drive (2006007-002)
         -  OPSEIS Plotter, 11 inch (OYO GS 612) Model 935 (2006008-001)
         -  OPSEIS RF Unit Model 911 (2006895-001)
         -  Software Selectable Digital Notch and Low-Cut Filters
         -  One (1) Set YAGI CRS Antennas, 110 V Rotors, and Wiring Harness 
             (2005660-001)
         -  3 FT 110V CRS Equipment Cabinet (2006006-001)
         -  110V UPS Power Backup System
         -  Vibroseis Interface 0
             Consisting of:
             -  Surface Excitation Interface Unit Model 925 (2005449-003)
             -  Correlation Software and Hardware
             -  CRS Software
             -  Cable Set

     B.  Opseis Eagle Universal Seismic
                       (6 Channels)
                       (4 Channels)
                       (2 Channels)
         Acquisition Remote Unit (SAR) Model 813/6
         (each accommodates 6 recording channels)
         This configuration provides 1000 channels
         plus 50% roll along. (2006001-999)
         Each SAR consist of:
         -  Case, PRC (2005801-999)
         -  SAR Transceiver (2005214-999)
         -  6 Channel - 24 Bit SAR Logic Unit (2006002-066)
         -  Antenna Assembly, Yagi w/Poles, Dom, 6NC (2006004-003)
            & Cover Bag (2005728-001)
         -  No Audio Kit (2006025-001)
         -  Solar Panel and 10 AH Battery

     C.  RF Blastor Model 815/816 (Radio
         Controlled Shooting Device) (2005662-002)
         with Voice Communication
     D.  Battery Charger, 10AH, 110V, Model 715
         (36 SAR Charging Capability) (2005377-003)

     E.  Manuals



                                                                    25



<PAGE>

TOTAL MAIN EQUIPMENT

 II. OPTIONS

     A. Antenna Mast (60 ft.) (1110000-015)

     B. Antenna Mast Spares (2005580-001)

     C. Portable CRS Cases (2006011-001)
        $16,474

III. OPTIONAL TEST EQUIPMENT & SPARES

     A. OPSEIS 110 V Eagle SAR Tester
        $104,500
        (2005403-001)

     B. OPSEIS 110/220V Eagle SAR Tester
        (2005403-003)

     C. OPSEIS 110 V Transceiver Maintenance
        $93,500
        Equipment (2005554-001)
        consisting of:

           Computer System                       (1192004-001)
           RF Tester                             (2005445-001)
           RF Alignment Fixture                  (2006169-001)
           IFR Spectrum Analyzer Mdl A-7550      (2005556-001)
           Leader Power Supply Mdl A-LPS-164A    (1481007-005)
           BK Precision Function Gen. Adl 3011B  (1343000-010)
           BK Precision Freq. Counter Mdl 1856   (1343000-011)
           Tektronixs Oscilloscope Mdl 2445B     (1343000-001)
           Wavetak Signal Generator Mdl 2510A    (2005555-001)
           Bird Wattmeter Mdl 43                 (2005557-001)

     D. Power Unit Capacity Tester
        (Provides 8 SAR Capability) (2005363-003)

     E. Deployment Aid model 710
        (2005558-002)

     F. L.C. Tester (2006063-001)

     G. Standard System Spares

        1. CRS Spares (2005550-999)
           Attachment A

        2. SAR Spares (2005559-999)
           Attachment B

        3. Vibrosais Spares (2006103-999)
           Attachment C

<PAGE>

     H. Expanded System Spares

        1. CRS Spares (2005550-999)
           Attachment A

        2. SAR Spares (2005559-999)
           Attachment B

        3. OPSEIS System Component Spares
           Attachment C

        4. CRS/SAR Tester Spare Parts
           Attachment D

        5. Vibrosais Spares (2006103-999)
           Attachment E

        6. Pelton Spares 0
           Attachment F 0



<PAGE>

                            OPSEIS PRODUCT QUOTATION

                             Standard System Spares
                                 Attachment A
                           Board Level Spares for CRS


Description                     Part No.
- -------------------------------------------

Data Display IOC                2001235-001
DO Graphic Processor            2009536-001
Operator Display IOC            2001230-001
VME Hard Disk Module            2009904-001
Global Bus System Processor     2009817-001
4 MB Ram                        2009821-001
RF IOC 2                        2009915-001
Mag Tape IOC 2                  2009845-001
CRS RF Interface                2005237-001
Data Receiver Processor         2005789-001
Octal Serial Port               2009837-001
Transmit/Receive Switch         2005248-001
Spectrum Analyzer               2005249-001
CRS Receivers                   2005246-002
CRS Transmitter                 2005247-003

TOTAL BOARD LEVEL SPARES FOR CRS
ITEM III.G.1, MAIN QUOTATION


<PAGE>

Standard System Spares
Attachment B
Board Level Spares for SAR

Description                                Part No.
- ------------------------------------------------------

SAR 24 Bit Digital Board                   2005201-001
SAR Battery Pack                           2005203-001
SAR 24 Bit Analog Board                    2005736-001
SAR 24 Bit Motherboard                     2005688-001
SAR 24 Bit Power Regulator                 2006108-001
SAR Power Converter w/Long Sleep           2005210-002
Antenna Assembly, Yagi w/Poles. Dom, BNC   2006004-003
Complete Transceiver                       2005214-999
Solar Panel (Standard)                     2009933-001

TOTAL BOARD LEVEL SPARES FOR SAR
ITEM III.G.2, MAIN QUOTATION


Standard System Spares
Attachment C
Board Level Spares for Vibroseis

Description                                Part No.
- ------------------------------------------------------

SEIU Interface                             2009769-001
Octal Sanal Bd                             2009837-001
Dual Power Supply 24V                      1481008-001

TOTAL BOARD LEVEL SPARES FOR VIBROSEIS
ITEM III.G.3, MAIN QUOTATION



<PAGE>

                           EXPANDED SYSTEM SPARES
                                ATTACHMENT A
                         BOARD LEVEL SPARES FOR CRS



Description                                       Part No.
- --------------------------------------------------------------------------

Oyo Plotter Spares (Detailed List                 2005549-001
 Available upon Request)
Data Display IOC                                  2001235-001
DD Graphic Processor                              2009536-001
Operator Display IOC                              2001230-001
OPSEIS 3480 1/2" Cartridge Tape Drive             1191017-001
VME Hard Disk Module                              2009904-001
Global Bus System Processor                       2009817-001
4 MB Ram                                          2009821-001
RF IOC 2                                          2009915-001
Mag Tape IOC 2                                    2009845-001
CRS RF Interface                                  2005237-001
Data Receiver Processor                           2005789-001
Octal Serial Port                                 2009837-001
Transmit/Receive Switch                           2005248-001
Spectrum Analyzer                                 2005249-001
Set of Internal & External Cables                 2005551-001
CRS Receivers                                     2005246-002
CRS Transmitter                                   2005247-003
SPU Power Supply                                  1481000-001
RF Unit 12V Power Supply                          1481000-009
RF Unit 5V Power Supply                           1481000-010

TOTAL BOARD LEVEL SPARES FOR CRS
ITEM III.H.1, MAIN QUOTATION

<PAGE>

                           EXPANDED SYSTEM SPARES
                                ATTACHMENT B
                         BOARD LEVEL SPARES FOR SAR

A. ELECTRONIC ENCLOSURE

Description                                       Part Number      Qty.
- --------------------------------------------------------------------------
SAR 24 Bit Digital Board                          2005201-001       13
SAR Battery Pack                                  2005203-001       20
"BNC" Type Antenna Connector                      C64097            13
Geophone Jumper Connectors - Mating               1215000-029       25
SAR 24 Bit Analog Board                           2005736-001       15
SAR 24 Bit Motherboard                            2005688-001       13
SAR 24 Bit Power Regulator                        2006108-001       13
SAR Power Converter w/Long Sleep                  2005210-002       13
SAR Internal Cable Set (Standard)                 2005578-001       13
Antenna Assembly, Yagi w/Poles,
Dom, BNC                                          2006004-003       15
Complete Transceiver                              2005214-999       13
Solar Panel (Standard)                            2009933-001       13
Male Wirelink Connectors                          1215000-037       13
Female Wirelink Connectors                        1215000-039       25

TOTAL BOARD LEVEL SPARES FOR SAR
ITEM III.H.2, MAIN QUOTATION


<PAGE>

                           EXPANDED SYSTEM SPARES
                                ATTACHMENT D
                           CRS/SAR TESTER SPARES



Description                                       Part Number
- --------------------------------------------------------------------------

Emulator Board                                    2009399-001
Set External Cables                               2009566-008
Global Bus System Processor                       2009817-002
RF Tester Interface                               2005258-001
6 Ch. Test Signal Synthesizer                     2005722-001
Data Receiver Processor (.5 Meg)                  2009892-002
68000 POD Cable                                   1682010-001
SAR System Interface                              2009396-002

TOTAL CRS/SAR TESTER SPARES
ITEM III.H.4, MAIN QUOTATION


<PAGE>

                                SCHEDULE 3A
                        GENERAL CONDITIONS OF SALE


                                 FORWARD

The General Conditions of Sale herein strictly govern SERCEL's relations 
with, and Orders placed by, the Client.


                           ARTICLE 1 - ORDERS

Orders must be sent to SERCEL in writing or be confirmed by fax or telex. 
Orders and commitments only become binding on written acceptance by SERCEL 
and under the conditions defined by this acceptance and by the present 
General Conditions. Any General Purchase Conditions and/or any particular 
purchase conditions on the Client's purchase order which are inconsistent with 
the acceptance conditions and/or the General Conditions herein will be 
considered to be null and void.


                            ARTICLE 2 - PRICES

Prices quoted on the order acceptance are firm and are not subject to 
revision, unless there is a specific clause to the contrary. SERCEL reserves 
the right to revise its prices in the event of delivery being suspended or 
delayed as a result of the non-performance of his obligations by the Client. 
Prices quoted on the order acceptance are not inclusive of tax, packaging, 
transport and insurance costs. Additional costs are invoiced to the Client on 
delivery.


                     ARTICLE 3 - CONDITIONS OF PAYMENT

Unless stated to the contrary on the order acceptance and on the invoice, 
payment is made net 30 days after the invoice date. Non payment of an invoice 
within the time allowed gives SERCEL the authority to suspend all deliveries.


                          ARTICLE 4 - TIME LIMITS

Delivery dates are given for information only and do not take account of 
transport time. A delay does not justify the order being canceled or give 
cause for penalties for late delivery or damages.


                           ARTICLE 5 - DELIVERY

The goods are delivered to the Client by the carrier to the place indicated 
on the order and under the conditions stipulated on the order acceptance. 
Partial deliveries are permitted. SERCEL reserves the right to suspend any 
delivery if the Client is behind schedule with payment.


                 ARTICLE 6 - TRANSFER OF RISKS - TRANSPORT

The risks are transferred to the Client at latest from the day the goods are 
dispatched. Dispatch is made under the best possible conditions but does not 
incur the responsibility of SERCEL.
If dispatch of the goods is delayed through the fault of the client, the 
available for delivery. The goods are then warehoused and handled, if 
necessary at the expense and risk of the Client. SERCEL declines any 
subsequent responsibility in this respect.
In the event of goods being partially dispatched, the risks transferred to 
the Client are those pertaining to the goods thus dispatched. Operations 
relating to transport, insurance, customs, handling and transport to site are 
at the expense and risk of the Client, who has to check the parcels or 
packages on their arrival and to take any necessary action against the 
carrier, the shipping agent or the forwarding agent even if the dispatch was 
to be made carriage free.
Any reserve raised by the Client must be indicated on the delivery note 
countersigned by the carrier or his employee and be confirmed by registered 
letter to the carrier within three workdays following the date of receipt, in 
accordance with article 105 of the French Commercial Code and a copy should 
be sent to SERCEL.
Non performance of these clauses will prevent any compensation, even 
partially, to the Client.


                         ARTICLE 7 - GUARANTEE

SERCEL guarantees the equipment it sells and supplies against any default or 
manufacturing and operating defect under the conditions and within the limits 
outlined below:
The guarantee only applies if the Client has met the general obligations set 
out in the General Conditions herein and/or in the conditions of the 
acceptance order.
The guarantee is strictly limited to SERCEL equipment and does not extend to 
supplies and accessories which SERCEL do not manufacture. The guarantee 
period is twelve (12) months starting from the date of delivery.
Once this period has expired, the guarantee is no longer valid.
SERCEL's obligation of guarantee shall apply only if the Client states that 
the default or defect has appeared under normal working conditions. The 
guarantee does not apply in the event of any fault, negligence, imprudence, 
lack of surveillance or maintenance, disregard for operating instructions or 
recommendations on the part of the Client.

Any guarantee is also excluded for incidents resulting from accidents force 
majeure, deterioration, replacements or repairs which result from normal wear 
and tear.
The guarantee is limited to the obligation to repair in SERCEL's workshops at 
its expense and in the best time-limits, equipment and spare parts supplied 
by SERCEL, recognized as defective by its technical services or its client 
service department and which have been sent free of charge. In respect 
thereof, SERCEL shall not be held liable for any damages to equipment other 
than those subject to the present General Conditions, nor for personal 
injury, death or any indirect damages and/or consequential losses such as but 
not limited to loss of revenues, loss of profit, loss of production or loss 
of clientele.
In order to claim the benefit of the guarantee, the Client must inform SERCEL 
without delay and in writing of the default or defects. The Client must give 
SERCEL or its agents the means needed to proceed with verifying the default 
or defects or remedying them.
The guarantee does not apply if the equipment is not returned to SERCEL in the 
state in which it became defective or if it has been modified or repaired 
attempted beforehand by a third party of the Client. Once it has been 
properly informed of the default or defect in its equipment, SERCEL shall 
remedy it within the best time-limits whilst reserving the right, if 
necessary, to modify all or part of the equipment, in order to meet its 
obligations.
The Client acknowledges that SERCEL shall not be responsible for damages 
caused by the Client as a result of the non-performance by the Client of its 
obligations as defined above.
SERCEL does not offer the Client any guarantee of industrial or economic 
results. SERCEL therefore denies any and all responsibility accordingly.


                      ARTICLE 8 - RETURNED GOODS

No goods shall be returned without the prior consent of SERCEL. Transport 
cost are payable by the Client.


                    ARTICLE 9 - RESERVATION OF TITLE

SERCEL retains full ownership of the delivered goods until the price, in 
principal and accessories has been paid in full.
In the event of non payment, of even part of the price in the given time, 
SERCEL reserves the right to demand the return of the goods of which the 
purchaser is only a depository until payment has been made in full in 
accordance, as relevant, with the provision of article 121 of the French law 
dated this 25.01.85.
SERCEL's right of ownership on delivered goods is by the present General 
Conditions expressly transferred to all merchandise manufactured from these 
products proportionately to their value.
In case SERCEL should be obliged to put the present clause of reservation of 
title into practice, it is expressly agreed that advances paid by the 
purchaser shall remain the property of SERCEL.
In the event of a clause excluding all reservation of title in favour or 
SERCEL is included in the orders, the general purchase conditions or any 
other document being issued by the Client, such clause will be considered not 
applicable with respect to SERCEL and cannot be used against it.


                        ARTICLE 10 - REEXPORTATION

Goods delivered under export licence or indicated as being subject to an 
export licence may not be exported without the authorization of the countries 
to which the equipment was delivered initially.


               ARTICLE 11 - APPLICABLE LAW - JURISDICTION

The General Conditions of Sale herein and/or the conditions of the order 
acceptance are governed by French Law.
Any dispute or litigation arising from the General Conditions of Sale and/or 
the contract of sale will be submitted to the exclusive authority of the 
Tribunal de Commerce in Nantes.

                                      93

<PAGE>

                                 SCHEDULE 3A

- --------------------------------------------------------------------------------
TERMS AND CONDITIONS OF SALE

1.) DELIVERY.  Transportation expenses shall be paid by Buyer.  Delivery to 
carrier shall constitute passage of title to Buyer irrespective of 
arrangements for transportation or insurance charges.  Risk of loss shall 
pass to Buyer concurrently with passage of title.

2.) TAXES.  Seller's prices do not include amounts for any sales, use, 
excise, or similar taxes.  Buyer shall pay, in addition to Seller's prices, 
the amount of any present or future such tax applicable to the sale or use of 
the goods or, in lieu of such payment, provide Seller with a tax exemption 
certificate acceptable to the taxing authorities.

3.) SHORTAGE.  Buyer must inspect goods promptly upon receipt and must submit 
any claim for shortage within thirty days after receipt or any such claim 
shall be waived.

4.) LIMITED WARRANTY.  Seller warrants the goods against defects in 
workmanship or materials under normal use for twelve months from date of 
initial operation or eighteen months from the date of shipment, whichever is 
earlier, subject to the following limitations, provisions and exceptions:

          a.)  Seller's sole responsibility shall be, at its option, to 
repair or replace free of charge any parts or equipment found to be defective 
provided that such parts or equipment are returned prepaid by Buyer to 
Seller's facility in Tulsa, Oklahoma.  Any time and expenses of Seller's 
personnel for site travel and diagnosis under this warranty shall be paid by 
Buyer.

          b.)  Goods repaired and parts replaced during the warranty period 
shall be in warranty for the remainder of the original warranty period.

          c.)  Hardware manufactured by others which is expressly specified 
by Buyer to be supplied with Seller's goods under this contract is warranted 
in accordance with the published warranty of its manufacturer, to the extent 
Seller has the right to such warranty.

          d.)  THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND 
EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED; AND SELLER 
MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO THE FITNESS FOR A PARTICULAR 
PURPOSE OR MERCHANTABILITY OF THE GOODS.

5.)  PRODUCT SUPPORT.

          a.)  Seller's policy is that functionally interchangeable 
replacement parts will be available during the time a standard product is 
offered for sale.

          b.)  No guarantee of parts availability, repair capability, or 
functionally equivalent goods is offered for goods manufactured by others and 
supplied with Seller's goods at Buyer's express request.

6.)  PATENT INFRINGEMENT.  Seller shall defend Buyer and pay any damages 
assessed against Buyer in any suit based on any claim that goods manufactured 
by Seller and furnished under this contract constitute an infringement of a 
valid United States patent, provided that Buyer gives Seller prompt written 
notice of such claim and permits Seller to assume defense of the suit.  As an 
alternative, Seller may, at its option and expense, procure for Buyer the 
right to continue using such goods, modify the goods to avoid infringement, 
or replace the goods with non-infringing goods.  Buyer agrees that Seller 
shall not be liable if infringement is based upon the use of the goods in 
connection with goods manufactured by others or in a manner for which the 
goods were not designed or if the goods were designed by the Buyer or were 
modified by or for the Buyer in a manner to cause them to become infringing.

7.)  LIMITATION OF LIABILITY.  Seller will, at Buyer's request, submit 
Certificates of Insurance showing limits of coverage.  Seller agrees to 
indemnify and save harmless Buyer only against liability imposed on Buyer by 
law with respect to bodily injury or property damage to the extent such 
liability results from Seller's performance under this contract.  Seller 
shall have no liability for any loss or damage resulting from Buyer's or 
third parties negligence, misuse, or misapplication of the goods furnished.  
In no event shall Seller be liable for any consequential damages of any 
nature whatsoever or any loss of income or profits.

8.)  FORCE MAJEURE.  Seller shall not be liable for any default in the 
performance of any obligation contained in, or related to, this contract, to 
the extent that performance is affected by any cause or causes reasonably 
beyond the control of Seller, including but not limited to acts of God, any 
law, rule, regulation of or any act or request of any governmental authority 
or agency, failure of any contractor or supplier, fire, storm, flood, 
earthquake, explosion, accidents, acts of the public enemy, riot, labor 
dispute, labor or material shortage, and or delays in transportation.

9.)  CANCELLATION BY BUYER.  If Buyer cancels this agreement or refuses 
delivery of the goods, Buyer shall be liable for and shall pay to Seller all 
expenses incurred or committed to by Seller prior to cancellation and 
Seller's profit to the same extent as if Buyer had accepted delivery of the 
finished goods.

10.)  COMPLETE AGREEMENT.  These terms and conditions, and the documents to 
which they are attached, constitute the entire agreement between the parties 
regarding the sale and purchase of the goods and/or services to be performed 
and no other promises or agreements shall be of any force or effect unless 
put in writing and agreed to by both parties. THE VALIDITY, INTERPRETATION, 
AND PERFORMANCE OF THIS AGREEMENT SHALL BE GOVERNED BY THE LAWS OF THE STATE 
OF OKLAHOMA, U.S.A.

11.)  STORAGE.  Buyer agrees to pay Seller a storage charge of 1% of the 
total purchase price per month, or prorated portion thereof for a part of a 
month, for goods not authorized for shipment by Buyer within fourteen days 
following either the specified delivery date or the date the Buyer is 
notified that the same are ready for shipment, whichever is later.

12.)  SOFTWARE.  If software is provided hereunder, Buyer is granted a 
non-exclusive license only for Buyer's use of Seller's software on the system 
for or with which said software was provided.  Such license and programs or 
materials to which it applies may not be assigned, sub-licensed, or otherwise 
transferred by Buyer without prior written consent of Seller.  Software 
supplied by Seller which is licensed by Seller from third parties shall be 
provided to Buyer subject to terms of an applicable sublicense agreement.  
All software supplied hereunder remains the property of Seller (or other 
licensor if applicable).

13.)  ASSIGNMENT.  These terms shall be binding upon and shall accrue to the 
benefit of the parties hereto and their respective assigns and successors in 
interest; provided, however, neither party may assign this agreement, or any 
of its interests herein, without the prior written consent of the other party.



<PAGE>

                                 SCHEDULE 3B

OPSEIS

*    ALL NEW OPSEIS ITEMS MANUFACTURED WITH THE EXCEPTION OF ANY OBSOLETE 
     PRODUCTS ARE OFFERED AT A 10% DISCOUNT TO THE LIST PRICES.

*    SPARE PARTS AS IDENTIFIED ON THE THEN VALID PRODUCT LISTING ARE OFFERED 
     AT A 10% DISCOUNT TO THE LIST PRICES.

*    ONE TIME OFFER FOR THE PURCHASE OF 720 CHANNELS OF OPSEIS SAR'S AT 14% 
     DISCOUNT.


AMG

*    ALL NEW AMG SN388 CABLE AND GEOPHONE PRODUCTS WITH THE EXCEPTION OF ANY 
     OBSOLETE PRODUCTS ARE OFFERED AT A 12% DISCOUNT TO THE LIST PRICES.

*    ALL NEW AMG VIBRATOR PRODUCTS AND VIBRATOR SPARE PARTS WITH THE EXCEPTION
     OF ANY OBSOLETE PRODUCTS ARE OFFERED AT A 8% DISCOUNT TO THE LIST PRICE.

*    ALL NEW AMG DOWNHOLE VSP TOOLS WITH THE EXCEPTION OF ANY OBSOLETE 
     PRODUCTS ARE OFFERED AT A 8% DISCOUNT TO THE LIST PRICE.

*    THE SST PRODUCT LINE IS EXCLUDED FROM THIS AGREEMENT.

SERCEL

*    ALL NEW SERCEL GEOPHYSICAL PRODUCTS MANUFACTURED WITH THE EXCEPTION OF 
     ANY OBSOLETE PRODUCTS ARE OFFERED AT A 15% DISCOUNT TO THE LIST PRICES.

*    SPARE PARTS AS IDENTIFIED ON THE THEN VALID PRODUCT LISTINGS ARE OFFERED 
     AT A 10% DISCOUNT TO THE LIST PRICES.




<PAGE>

                                  SCHEDULE 4

<TABLE>
- --------------------------------------------------------------------------------------------
  REFERENCE
      NO.               DESCRIPTION                    DATE                             QTY.
- --------------------------------------------------------------------------------------------
<S>            <C>                                     <C>                              <C>
1649072919A    CD488B Cartridge Drive #11              05/95   Total Quantity CD488B:    2
1649072919A    CD488B Cartridge Drive #15              05/95
1A11072933A    HCI Screen & Processor Assbly Parts     05/95                             1
1A11071235A    HC1388 CD & Cartridge Assbly Parts      05/95                             1
1A40069228A    SN388 Station Unit (SU-1) #101543       05/95   Total Quantity SU-1:      2
1A40069228A    SN388 Station Unit (SU-1) #101544       05/95
1A40069230A    SN388 Station Unit (SU-6) #4001         05/95   Total Quantity SU-6:     97
1A40069230A    SN388 Station Unit (SU-6) #4002         05/95
1A40069230A    SN388 Station Unit (SU-6) #4003         05/95
1A40069230A    SN388 Station Unit (SU-6) #4004         05/95
1A40069230A    SN388 Station Unit (SU-6) #4005         05/95
1A40069230A    SN388 Station Unit (SU-6) #4006         05/95
1A40069230A    SN388 Station Unit (SU-6) #4008         05/95
1A40069230A    SN388 Station Unit (SU-6) #4009         05/95
1A40069230A    SN388 Station Unit (SU-6) #4010         05/95
1A40069230A    SN388 Station Unit (SU-6) #4011         05/95
1A40069230A    SN388 Station Unit (SU-6) #4012         05/95
1A40069230A    SN388 Station Unit (SU-6) #4013         05/95
1A40069230A    SN388 Station Unit (SU-6) #4014         05/95
1A40069230A    SN388 Station Unit (SU-6) #4015         05/95
1A40069230A    SN388 Station Unit (SU-6) #4016         05/95
1A40069230A    SN388 Station Unit (SU-6) #4017         05/95
1A40069230A    SN388 Station Unit (SU-6) #4018         05/95
1A40069230A    SN388 Station Unit (SU-6) #4019         05/95
1A40069230A    SN388 Station Unit (SU-6) #4020         05/95
1A40069230A    SN388 Station Unit (SU-6) #4021         05/95
1A40069230A    SN388 Station Unit (SU-6) #4022         05/95
1A40069230A    SN388 Station Unit (SU-6) #3788         05/95
1A40069230A    SN388 Station Unit (SU-6) #4024         05/95
1A40069230A    SN388 Station Unit (SU-6) #4025         05/95
1A40069230A    SN388 Station Unit (SU-6) #4026         05/95
1A40069230A    SN388 Station Unit (SU-6) #4027         05/95
1A40069230A    SN388 Station Unit (SU-6) #4028         05/95
1A40069230A    SN388 Station Unit (SU-6) #4029         05/95
1A40069230A    SN388 Station Unit (SU-6) #4030         05/95
1A40069230A    SN388 Station Unit (SU-6) #4031         05/95
1A40069230A    SN388 Station Unit (SU-6) #4032         05/95
1A40069230A    SN388 Station Unit (SU-6) #4033         05/95
1A40069230A    SN388 Station Unit (SU-6) #4034         05/95
1A40069230A    SN388 Station Unit (SU-6) #4036         05/95
1A40069230A    SN388 Station Unit (SU-6) #4037         05/95
1A40069230A    SN388 Station Unit (SU-6) #4038         05/95
1A40069230A    SN388 Station Unit (SU-6) #4039         05/95
1A40069230A    SN388 Station Unit (SU-6) #4040         05/95
1A40069230A    SN388 Station Unit (SU-6) #4041         05/95
1A40069230A    SN388 Station Unit (SU-6) #4042         05/95
1A40069230A    SN388 Station Unit (SU-6) #4043         05/95
1A40069230A    SN388 Station Unit (SU-6) #4045         05/95
1A40069230A    SN388 Station Unit (SU-6) #4046         05/95
1A40069230A    SN388 Station Unit (SU-6) #4047         05/95
1A40069230A    SN388 Station Unit (SU-6) #4048         05/95
1A40069230A    SN388 Station Unit (SU-6) #4049         05/95
1A40069230A    SN388 Station Unit (SU-6) #4050         05/95
1A40069230A    SN388 Station Unit (SU-6) #4051         05/95
1A40069230A    SN388 Station Unit (SU-6) #4052         05/95
1A40069230A    SN388 Station Unit (SU-6) #4053         05/95
1A40069230A    SN388 Station Unit (SU-6) #4054         05/95
1A40069230A    SN388 Station Unit (SU-6) #4055         05/95
</TABLE>

<PAGE>

                                  SCHEDULE 4

<TABLE>
- --------------------------------------------------------------------------------------------
  REFERENCE
      NO.               DESCRIPTION                    DATE                             QTY.
- --------------------------------------------------------------------------------------------
<S>            <C>                                     <C>                              <C>
1A40069230A    SN388 Station Unit (SU-6) #4056         05/95
1A40069230A    SN388 Station Unit (SU-6) #4057         05/95
1A40069230A    SN388 Station Unit (SU-6) #4058         05/95
1A40069230A    SN388 Station Unit (SU-6) #4059         05/95
1A40069230A    SN388 Station Unit (SU-6) #4060         05/95
1A40069230A    SN388 Station Unit (SU-6) #4061         05/95
1A40069230A    SN388 Station Unit (SU-6) #4062         05/95
1A40069230A    SN388 Station Unit (SU-6) #4063         05/95
1A40069230A    SN388 Station Unit (SU-6) #4064         05/95
1A40069230A    SN388 Station Unit (SU-6) #4065         05/95
1A40069230A    SN388 Station Unit (SU-6) #4066         05/95
1A40069230A    SN388 Station Unit (SU-6) #4067         05/95
1A40069230A    SN388 Station Unit (SU-6) #4068         05/95
1A40069230A    SN388 Station Unit (SU-6) #4069         05/95
1A40069230A    SN388 Station Unit (SU-6) #4070         05/95
1A40069230A    SN388 Station Unit (SU-6) #4071         05/95
1A40069230A    SN388 Station Unit (SU-6) #4072         05/95
1A40069230A    SN388 Station Unit (SU-6) #4073         05/95
1A40069230A    SN388 Station Unit (SU-6) #4074         05/95
1A40069230A    SN388 Station Unit (SU-6) #4075         05/95
1A40069230A    SN388 Station Unit (SU-6) #4076         05/95
1A40069230A    SN388 Station Unit (SU-6) #4077         05/95
1A40069230A    SN388 Station Unit (SU-6) #4078         05/95
1A40069230A    SN388 Station Unit (SU-6) #4079         05/95
1A40069230A    SN388 Station Unit (SU-6) #4080         05/95
1A40069230A    SN388 Station Unit (SU-6) #4081         05/95
1A40069230A    SN388 Station Unit (SU-6) #4082         05/95
1A40069230A    SN388 Station Unit (SU-6) #4083         05/95
1A40069230A    SN388 Station Unit (SU-6) #4084         05/95
1A40069230A    SN388 Station Unit (SU-6) #4085         05/95
1A40069230A    SN388 Station Unit (SU-6) #4086         05/95
1A40069230A    SN388 Station Unit (SU-6) #4087         05/95
1A40069230A    SN388 Station Unit (SU-6) #4088         05/95
1A40069230A    SN388 Station Unit (SU-6) #4089         05/95
1A40069230A    SN388 Station Unit (SU-6) #4090         05/95
1A40069230A    SN388 Station Unit (SU-6) #4091         05/95
1A40069230A    SN388 Station Unit (SU-6) #4092         05/95
1A40069230A    SN388 Station Unit (SU-6) #4093         05/95
1A40069230A    SN388 Station Unit (SU-6) #4094         05/95
1A40069230A    SN388 Station Unit (SU-6) #4095         05/95
1A40069230A    SN388 Station Unit (SU-6) #4096         05/95
1A40069230A    SN388 Station Unit (SU-6) #4097         05/95
1A40069230A    SN388 Station Unit (SU-6) #4098         05/95
1A40069230A    SN388 Station Unit (SU-6) #4099         05/95
1A40069230A    SN388 Station Unit (SU-6) #4100         05/95
1A41069500A    SN388 Power Station Unit (PSU)#624      05/95   Total Quantity PSU:      13
1A41069500A    SN388 Power Station Unit (PSU)#626      05/95
1A41069500A    SN388 Power Station Unit (PSU)#629      05/95
1A41069500A    SN388 Power Station Unit (PSU)#635      05/95
1A41069500A    SN388 Power Station Unit (PSU)#636      05/95
1A41069500A    SN388 Power Station Unit (PSU)#638      05/95
1A41069500A    SN388 Power Station Unit (PSU)#639      05/95
1A41069500A    SN388 Power Station Unit (PSU)#640      05/95
1A41069500A    SN388 Power Station Unit (PSU)#641      05/95
1A41069500A    SN388 Power Station Unit (PSU)#642      05/95
1A41069500A    SN388 Power Station Unit (PSU)#643      05/95
1A41069500A    SN388 Power Station Unit (PSU)#644      05/95
1A41069500A    SN388 Power Station Unit (PSU)#645      05/95
</TABLE>

<PAGE>

                                  SCHEDULE 4

<TABLE>
- --------------------------------------------------------------------------------------------
  REFERENCE
      NO.               DESCRIPTION                    DATE                             QTY.
- --------------------------------------------------------------------------------------------
<S>            <C>                                     <C>                              <C>
1A45069496A    SN388 Crossing Station Unit (CSU)#302   05/95   Total Quantity CSU:       8
1A45069496A    SN388 Crossing Station Unit (CSU)#303   05/95
1A45069496A    SN388 Crossing Station Unit (CSU)#304   05/95
1A45069496A    SN388 Crossing Station Unit (CSU)#305   05/95
1A45069496A    SN388 Crossing Station Unit (CSU)#306   05/95
1A45069496A    SN388 Crossing Station Unit (CSU)#307   05/95
1A45069496A    SN388 Crossing Station Unit (CSU)#308   05/95
1A45069496A    SN388 Crossing Station Unit (CSU)#309   05/95
1ACA070236A    SN388 Line Tester (LT388)#47            05/95                             1
</TABLE>


<PAGE>

                                  SCHEDULE 4

<TABLE>
- ----------------------------------------------------------------------------------------
    ASSET
      NO.               DESCRIPTION                    DATE        QTY.                   
- ----------------------------------------------------------------------------------------
<S>            <C>                                     <C>          <C>
             Battery Charger w/carry case(28)-LSM      05/95        28
             Cable Transverse 400M (9)-AMG             05/95         9
             Cable Transverse 210M (120)-AMG           05/95       120
             Cable Transverse 200M (1)-AMG             05/95         1
             Connectors (4)-AMG                        05/95         4



                                                 TOTAL PRICE                     $800,000
                                                                                 --------
                                                                                 --------
</TABLE>


<PAGE>

                              SCHEDULE 18(e)

                              LIST OF AGENTS

COUNTRY                                AGENT
- -------                                -----

Turkey                                 Damas Ticaret

Pakistan                               Shazhad International

India                                  Pan India Consultants

Indonesia                              SSI (Seismic Supply International)

Australia                              SSI (Seismic Supply International)

Bangladesh                             NNC (N and N Corporation)

Russia                                 FXC

Kazakhstan                             Geotolkin

Canada                                 Mitcham

Mexico                                 Antonio Limon

South America                          Petrosol


<PAGE>

                     COMMERCIAL REPRESENTATION AGREEMENT

     THIS COMMERCIAL REPRESENTATION AGREEMENT (the "Agreement"), dated and 
effective as of the 20th day of September, 1996 (the "Effective Date"), is 
between GEOREX, INC., a Texas corporation acting through its Sercel, Inc. 
division, with its principal place of business at Houston, Texas, U.S.A.  
("Sercel"), and MITCHAM CANADA LTD., an Alberta corporation, with its 
principal place of business to be located in Calgary, Alberta, Canada 
("Representative").

                               BACKGROUND FACTS

     Sercel is an authorized distributor of Sercel S.A. and sells Sercel 
Products to customers throughout the Americas;

     Sercel desires (i) to appoint a commercial representative to promote the 
sale of Sercel Products within the Territory and, and (ii) to designate a 
service center in Canada, such appointment of commercial representative and 
designation of service center to be made on the basis of all of the terms and 
conditions contained in this Agreement; and

     Representative desires to be appointed by Sercel as a commercial 
representative for sales of Sercel Products, and to operate a service center 
to service Sercel Products, all on the basis of the terms and conditions set 
forth below in this Agreement.


                             W I T N E S S E T H:

     NOW, THEREFORE, in consideration of the premises and the mutual promises 
and undertakings set forth below and intending to be legally bound hereby, 
the parties agree as follows:

     1.   DEFINITIONS. The following capitalized terms, as used in this 
Agreement, shall have the meanings defined for them as follows:

          a.   "CUSTOMERS" - potential customers of Sercel Products with offices
     or operations located within the Territory.

          b.   "FCPA" - the United States Foreign Corrupt Practices Act 
     (Pub. L.  No. 95-213, 94 Stat. 1494), together with all amendments to that
     Act which are effective during the term hereof.

          c.   "NET PRICE" - the price invoiced by Sercel to Customers in a 
     Qualifying Transaction, including any applicable discounts, but excluding
     charges appearing on the invoice for packing, transportation, insurance,
     duties, taxes 

<PAGE>

     and any other charges which do not include a component of profit for 
     Sercel.

          d.   "QUALIFYING TRANSACTION" - the sale of Products for use in 
     Canada by Sercel to a Customer during the term of this Agreement.

          e.   "SERCEL PRODUCTS" - Equipment manufactured by Sercel S.A. or 
     its affiliates (but not including equipment manufactured by third parties)
     which is offered for sale by Sercel from time to time and described on 
     SCHEDULE "1" attached hereto, including Spare Parts; provided, however, 
     Sercel shall be permitted to amend SCHEDULE "1" at its discretion
     and will endeavor to promptly notify Representative of all such changes.

          f.   "SPARE PARTS" - replacement parts to be sold in connection with
     the Equipment described on SCHEDULE "1".

          g.   "TERRITORY" - Canada.

     2.   APPOINTMENT.  Representative hereby represents to Sercel that 
within 120 days of the Effective Date, Representative will have the necessary 
skills, experience, personnel, facilities and equipment to effectively 
perform its responsibilities as a commercial representative and service 
center for Sercel as described in this Agreement.  In reliance upon that 
representation, Sercel hereby appoints Representative as the exclusive 
representative for Sercel to promote the sale of Sercel Products by Sercel to 
Customers within the Territory, and as an authorized service center for 
Sercel Products within the Territory.

     3.   TERM.  The term of this Agreement and of Representative's 
appointment as a commercial representative and designation as a service 
center for Sercel hereunder, shall commence on the Effective Date.  Unless 
sooner terminated as described in Section 15, below, the term shall continue 
in effect for a period of three years from the Effective Date (the "Expiration
Date"). Subject to Section 15 below and the following sentence, the Expiration
Date shall be automatically extended, without any further action by Sercel or 
Representative, for successive one (1) year periods following the expiration 
of the original three (3) year period. Notwithstanding the foregoing, if 
either party desires to terminate the term of Representative's engagement 
pursuant hereto at any time following the end of the first year after the 
Effective Date, such party shall be permitted to do so upon ninety (90) days 
notice to the other party, given in accordance with the provisions hereof.

     4.   RESPONSIBILITIES OF REPRESENTATIVE.  During the term of this 
Agreement, Representative shall:



                                    -2-


<PAGE>

          a.   use its best efforts to actively promote and solicit the sale 
     of Sercel Products by Sercel to Customers, including the exhibition of 
     Sercel Products at all significant sales conventions (including, but not
     limited to the CSEG) for like products within the Territory;

          b.   beginning not later than 120 days following the Effective Date,
     commence (and thereafter continue during the term of this Agreement) 
     operation of a high quality service center in the general area of Calgary,
     Alberta in Canada which will provide technical support of Sercel Products
     and perform warranty and non-warranty service on Sercel Products, all 
     pursuant to the manuals and specifications provided by Sercel to 
     Representative from time to time.  Sercel agrees that if in the case of 
     particular warranty work, in the event that Representative did not receive
     a commission from the sale of the applicable product, Sercel shall either 
     pay Representative its published repair rates or perform the warranty work
     itself;

          c.   make all payments in connection with the operation of its 
     business, including the payment of all wages, social security, withholding
     taxes, and company benefits arising out of this Agreement;

          d.   be responsible at its own expense (i) for the payment of freight,
     GST tax, import brokerage fees and any tariffs (from Sercel's office in 
     Houston, Texas) applicable to the sale of Sercel Products to a Customer; 
     provided, however, at the request of Representative, Sercel Products may 
     be sent to Representative's import broker directly in Canada, in which 
     instance Sercel will pay for the freight and Representative will pay the
     GST tax, import brokerage fees and other tariffs, and (ii) for the support
     of a Customer who has purchased Sercel Products consisting of new equipment
     during the start up period, which period shall generally run for two weeks;

          e.   promptly forward to Sercel all inquiries, bid and quotation 
     requests, orders and correspondence relating to Sercel Products which may 
     be received by Representative from Customers;

          f.   whenever requested to do so by Sercel, promptly forward to 
     Customers quotations, bids, order acknowledgments, invoices and other 
     commercial documents prepared by Sercel relating to Products;

          g.   whenever requested to do so by Sercel (but at least monthly),
     prepare and furnish to Sercel, in oral or written form as Sercel may 
     direct, confidential reports regarding the activities of Representative
     on behalf of Sercel;



                                    -3-


<PAGE>

          h. consult with Sercel regarding forecasts of demand for Sercel 
     Products by Customers, market trends for Sercel Products, legal 
     requirements of governmental authorities within Canada affecting the 
     sale of Sercel Products, and any other commercial and financial matters 
     pertaining to the sale of Sercel Products;

          i.   promptly comply with all reasonable requests by Sercel in 
     connection with the sale of Sercel Products by Sercel to Customers, 
     including, without limitation, requests to furnish assistance in connection
     with customs clearances, warranty administration, registrations, licenses
     and permits required by governmental authorities or by Customers and
     credit and collection matters;

          j.   participate in training programs which may be offered by Sercel 
     or by others relating to Sercel Products;

          k.   obtain approval of Sercel prior to the commencement of any 
     advertising relating to the sale of Sercel Products;

          l.   provide all labor at its own expense for the repair of all 
     Sercel Products under warranty extended by Sercel S.A., provided, however,
     if Representative is unable to make any such repairs, Representative shall
     ship such products to Sercel at Representative's sole cost and expense, 
     and; provided, further, that if a particular problem with Sercel Products
     becomes chronic, such that repeated repairs are required to correct such 
     problem (as determined in the reasonable discretion of Sercel), 
     Representative shall not be required to provide labor or shipping at its
     own expense in connection with the repair of any such chronic problem;

          m.   maintain in strict confidence, and not disclose to any other 
     person or firm except with the prior written permission of an authorized 
     officer of Sercel, any and all information received from Sercel or prepared
     by Representative for Sercel regarding prices, customer lists, business 
     plans, strategies, forecasts, studies, reports and any other information 
     which may be considered confidential or proprietary by Sercel and which is
     not publicly available. The confidentiality obligation of Representative 
     under this sub-part (m) shall survive the expiration or termination of this
     Agreement.  In the event that Representative receives a request to disclose
     all or any part of the confidential information under the terms of a 
     subpoena or order issued by a court or by a governmental body, 
     Representative agrees (i) to notify Sercel immediately of the existence, 
     terms, and circumstances surrounding such request, (ii) to consult with 
     Sercel on the advisability of taking legally available steps to resist or
     narrow such request, and (iii) if disclosure of such information is 
     required to prevent Representative from 



                                    -4-


<PAGE>

     being held in contempt or subject to other penalty, to furnish only such
     portion of the information as, in the written opinion of counsel reasonably
     satisfactory to Sercel, it is legally compelled to disclose and to exercise
     its best efforts to obtain an order or other reliable assurance that 
     confidential treatment will be accorded to the disclosed information; and

          n.   not sell Sercel Products to companies or countries that are 
     precluded by United States law from trading with the United States or its
     residents.

     5.   RESPONSIBILITIES OF SERCEL.  During the term of this Agreement, 
Sercel shall:

          a.   provide to Representative at Sercel's expense (including all 
     tariffs and shipping costs) all parts required for warranty repairs to 
     be performed by Representative;

          b.   repair at its own expense all Sercel Products sold by or 
     through the efforts of Representative to the extent such products remain 
     under warranty from Sercel S.A. and (i) could not be repaired by 
     Representative, or (ii) represent products with chronic problems, as 
     described in Section 4.1 above, and ship such products back to 
     Representative at Sercel's sole cost and expense;

          c.   provide to Representative at Sercel's expense training of 
     Representative's technicians in Houston, Texas or Nantes, France which
     training shall occur at least one (1) time per year, beginning with the
     Effective Date, and include a total of not less than fifteen (15) days 
     training per year; provided, however, Representative shall be responsible
     for paying for the transportation, lodging, food and other miscellaneous
     travel expenses incurred by Representative's technicians in connection 
     with such training;

          d.   provide to Representative at Sercel's expense the latest 
     applicable technical and commercial brochures, specifications and customer
     manuals; and

          e.   provide to Representative at Sercel's expense information 
     concerting changes to Sercel Products, prices and Sercel's sales policies.

     6.   COMPENSATION. As the sole and exclusive compensation for the services
to be performed by Representative hereunder, Sercel shall pay to Representative
a commission as described below in each Qualifying Transaction.  The amount of 
the commission to Representative shall be equal to the applicable percentage of
the Net Price for the Qualifying Transaction, as set forth below:



                                    -5-


<PAGE>

          a. seven and one half percent (7-1/2%) of the Sales Price of equipment
     described on SCHEDULE "l" hereto; and

          b.   ten percent (10%) of the Sales Price of Spare Parts;

provided that the parties may, by a written agreement executed on behalf of 
Sercel by an authorized officer, establish a different rate of commission 
which shall be applicable to any particular transaction.  Notwithstanding any 
of the foregoing, no commission shall be payable to Representative in 
connection with a Qualifying Transaction (a) consisting of a sale to 
Compangie Generale De Geophysique (known as CGG) or any of it affiliates, or 
(b) except as set forth in the following sentence, unless and until full 
payment for such Qualifying Transaction has been received by Sercel from the 
Customer.  In the event Sercel provides financing or permits deferred payment 
in connection with a Qualifying Transaction, Representative shall be entitled 
to receive its commission as payments are made by the Customer pursuant to 
such financing or deferred payment. Sercel shall send all commission payments 
only to the principal place of business or registered office of Representative,
or to an account maintained by Representative at a bank located in the same 
country where such principal place of business or registered office is 
located, which payments shall be made on or before the twentieth day following
the date Sercel receives payment from the Customer.  In no event shall any 
payment by Sercel to Representative be made in a manner, or to a location, 
which violates the taxation laws or other laws of any country.  Any income or 
other taxes arising from the payment of commissions to Representative 
hereunder shall be the sole responsibility of Representative, and the amount 
of commission otherwise payable to Representative shall not be increased as a 
result of such taxes.

     7.   REMARKETING OF SERCEL PRODUCTS.  It is anticipated by the parties 
that Sercel may sell the Sercel Products to Customers with the assistance of 
financing obtained through third parties, and that such financing may be 
recourse to Sercel.  As a result thereof, in the event of default in connection
with such financing by the Customer, it may be necessary, in the discretion 
of Sercel, for Sercel to take back the applicable products and resell such 
products to a third party. Representative agrees that it will use its best 
efforts to resell any Sercel Products that Sercel has taken back, directly or 
indirectly, as a result of a default by the Customer in connection with such 
financing.  Representative agrees that it will not be entitled to a commission
in connection with such resale, except to the extent the net proceeds of any 
such resale (less actual expenses incurred by Sercel and other amounts required
to be paid by Sercel as a result of the default) actually received by Sercel 
exceed the proceeds received (or the net proceeds retained) by Sercel in 
connection with the original sale. By way of example only, and assuming no 
expenses were incurred by Sercel in connection with the default, in the event 
a system was 



                                    -6-


<PAGE>

sold for $3,000,000, but only $500,000 was received prior to the system being 
taken back by Sercel (or even if the full purchase price was originally 
received, Sercel was obligated to give back to the financing company all but 
$500,000 of the original purchase price), and assuming further that the 
system was resold for a total of an additional $3,000,000, Representative 
would be entitled to a commission based upon the original $500,000 received 
from the first sale and the additional $3,000,000 received from the second 
sale. In this example, upon the occurrence of the second sale, Representative 
would be entitled to receive a commission on $500,000 since Representative 
already received a commission on $3,000,000 following the first sale.  Based 
upon Sercel's belief that the actual circumstances of a second sale could be 
complicated, especially given the variety of financing arrangements 
(including recourse obligations) likely to be utilized by Sercel, the 
determination of any commission payable to Representative following the 
resale of Sercel Products shall be in the reasonable discretion of Sercel.

     8.   EXPENSES.  All costs and expenses incurred by Representative, its 
employees, agents and representatives in performing services hereunder, 
including, without limitation, travel, lodging, entertainment, office, 
telephone, telecopy and telex expenses shall be paid by Representative, 
except (i) as otherwise set forth herein, (ii) for cost of space at relevant 
sales conventions for which Sercel shall pay one half of such costs, and 
(iii) any costs or expenses which Sercel shall have specifically agreed in 
writing and in advance of the time when such costs or expenses are incurred 
to pay or reimburse to Representative.

     9.   TERMS AND CONDITIONS OF SALE.  All Sercel Products to be sold by 
Sercel to Customers shall be offered only on the basis of such terms and 
conditions as are established by Sercel at its sole discretion.  
Representative shall not misrepresent such terms and conditions to Customers, 
and shall not modify or extend such terms and conditions without the prior 
written authorization of Sercel. All orders from Customers for Sercel 
Products shall be subject to acceptance by Sercel at its offices in Houston, 
Texas, and Sercel shall be permitted, in its sole judgement to reject any 
order obtained or reported by Representative, based upon credit worthiness of 
the Customer, availability of the particular products or any other reason.  
Representative agrees that it shall not have any ownership interest in Sercel 
Products sold pursuant to this Agreement, that Representative is acting only 
as a sales agent with regard to such products and that Representative shall 
not invoice Customers on account of the sale of Sercel Products (although 
Representative shall be permitted to forward to Customers invoices generated 
by Sercel) or receive any payments from Customers on account of Sercel 
Products sold pursuant hereto.  Sercel agrees to provide a written copy of 
its manufacturer's limited warranty with each Sercel Product delivered, and 
Representative will cooperate in 



                                    -7-


<PAGE>

delivering such warranty to its Customers who purchase Sercel Products.  
Representative agrees that it will not make any changes to such warranty, 
either orally or in writing.

     10.  CHANGES.  At any time and from time to time during the term of this 
Agreement, Sercel shall have the right to change the Sercel Products offered 
to the Customers, the prices charged to Customers for the Sercel Products, 
and the terms and conditions of its sales to Customers of Sercel Products 
without incurring any liability to Representative, except as to obligations 
which have accrued prior to the effective date of the change.  Sercel will 
endeavor to promptly notify Representative of all such changes.

     11.  COMPLIANCE WITH LAWS.  In all of its activities pursuant to this 
Agreement, Representative shall comply with all laws, decrees, statutes, 
rules, regulations, codes and ordinances of any jurisdiction which may be 
applicable to such activities, including, without limitation, laws imposing 
registration and disclosure requirements on Representative; provided, 
however, insignificant violations of any of the foregoing that have no more 
than a de minimis effect on Representative shall not be a violation of this 
Agreement.  In representing Sercel hereunder, Representative shall act at all 
times in a manner demonstrating a high level of integrity and ethical 
standards. Without limiting the scope of its general obligations set forth 
above in this section, Representative hereby represents and warrants to 
Sercel in connection with its activities performed for Sercel in the past (if 
any), and hereby covenants and agrees with Sercel in connection with its 
activities to be performed for Sercel in the future, that Representative and 
any person or firm acting in association with or on behalf of Representative:

     -    has not offered, paid, given, promised to pay or give, or authorized 
          the payment or gift of, and

     -    will not offer, pay, promise to pay or give, or authorize the payment
          or gift of,

any money or thing of value to:

     -    any "Foreign Official" as defined in the FCPA;

     -    any political party or party official, or any candidate for political
          office; or

     -    any other person

for the purpose of:

     -    influencing any act or decision of such Foreign Official, political 
          party, party official, or candidate in his or its official capacity;



                                    -8-


<PAGE>

     -    inducing such Foreign Official, political party, party official or 
          candidate to do or omit to do an act in violation of his or its 
          official duty; or

     -    inducing such Foreign Official, political party, party official or
          candidate to use his or its influence with a foreign government or
          an instrumentality of such government to affect or influence any act
          or decision of such government or instrumentality in order to assist
          Sercel to obtain or retain business with any person or to direct
          business to any person.

     Further, Representative hereby represents and warrants to Sercel that no 
person having a direct or indirect financial interest in Representative as of 
the date hereof is: (i) a Foreign Official, (ii) an official of any political 
party, or (iii) a candidate for political office; provided, however, for 
purposes hereof, a person shall not be deemed to have a direct or indirect 
financial interest in Representative as a result of owning less than five 
percent (5%) of the outstanding shares of common stock of Representative.  In 
connection with determining whether a person owns five percent (5%) or more 
of the such stock, Representative shall be permitted to rely upon filings 
made by its shareholders under the Securities Exchange Act of 1934, as 
amended, or filings made under other applicable federal securities laws. 
Representative shall immediately notify Sercel in the event that any person 
now or hereafter having such a financial interest in Representative shall 
assume such a status.

     From time to time as requested by Sercel, Representative shall, within 
five (5) days after request from Sercel, certify to Sercel in writing that 
the obligations, representations and warranties of Representative set forth 
in this Section have not been violated.  Sercel shall not be permitted to 
request such certification more often than once each calendar quarter unless 
it has reason to believe a violation has occurred.  Representative shall 
cooperate fully with any investigation which may be conducted by 
representatives of Sercel for the purpose of determining whether or not 
Representative has violated any of those obligations, representations and 
warranties.  In the event that amendments in the FCPA reasonably necessitate 
modifications to this Section 11, the parties hereto agree to negotiate in 
good faith in connection therewith and enter into such modifications.

     12.  NO AGENCY/TRADE NAME.  In connection with its activities on behalf 
of Sercel under this Agreement, Representative shall not be an agent or 
employee of Sercel, and Representative is not authorized to obligate or 
commit Sercel in any manner in dealings with Customers, potential customers, 
or other persons, firms or governmental units.  Representative is an 
independent contractor and shall not hold itself out as an agent or employee 
of Sercel or as having any authority to obligate or commit Sercel.



                                    -9-







<PAGE>

Representative shall not use the words "Sercel, Inc." or "Sercel" or any 
other trade name or trademark registered to Sercel or any affiliate of Sercel 
as a part of its legal or trade name; however, Representative shall be 
permitted to use Sercel's trade name in the Territory in connection with the 
marketing of Sercel Products. Representative agrees that in connection 
therewith, it will not register in its own name the trade names, trademarks 
or service marks held by Sercel and that upon termination of Representative's 
engagement pursuant to this Agreement, Representative shall immediately 
discontinue use of such marks and names held by Sercel.

     13.  INDEMNITY. Sercel and Representative hereby agree to the following 
indemnification obligations:

          a.   Representative shall indemnify and hold harmless Sercel, its 
     directors, officers and employees (hereinafter the "Sercel Indemnitees") 
     against any and all liability, loss, damages, fines, penalties, costs 
     and expenses (including, without limitation, court costs and reasonable 
     attorneys fees) incurred by any of the Sercel Indemnitees as a result of 
     any breach or violation by Representative or others acting on its behalf 
     of any obligation, covenant, representation or warranty of 
     Representative set forth in this Agreement.

          b.   Sercel shall indemnify and hold harmless Representative, its 
     directors, officers and employees (hereinafter the "Representative 
     Indemnitees") against any and all liability, loss, damages, fines, 
     penalties, costs and expenses (including, without limitation, court 
     costs and reasonable attorneys fees) incurred by any of the 
     Representative Indemnitees (i) as a result of any breach or violation by 
     Sercel or others acting on its behalf of any obligation, covenant, 
     representation or warranty of Sercel set forth in this Agreement, (ii) 
     for infringement or claim of infringement of any claimed patent rights 
     relating to the Sercel Products, or (iii) that arise out of or are based 
     upon losses, claims, damages or liabilities resulting from the design, 
     manufacture, and/or operation of any Sercel Products, from the failure 
     of any such Sercel Products to satisfy any warranties (whether expressed 
     or implied, if any) or from any defect in the Sercel Products.

          c.   Either party seeking indemnification hereunder shall notify 
     the other party in writing of any legal action commenced against the 
     Sercel Indemnitees or the Representative Indemnitees, as the case may 
     be, as soon as practicable.  The indemnity obligations of Representative 
     and Sercel shall survive the expiration or termination of this Agreement.

     14.  CONFLICT OF INTEREST.  During the term of Representative's 
engagement hereunder, and for the six (6) month period thereafter, 
Representative shall not promote, solicit or otherwise 

                                     -10-

<PAGE>

assist in the sale of any products which compete with Sercel Products to 
Customers by any other person or firm which is not a subsidiary of, or 
affiliated by ownership with, Sercel whether for compensation or otherwise, 
except as may be expressly permitted in writing by an authorized officer of 
Sercel; provided, however, the foregoing shall not preclude Representative 
from renting products to third parties or selling such products after they 
have been used in the ordinary course of business in the rental pool and; 
provided, further, the foregoing shall not preclude Representative from 
selling individual components that may compete with components making up a 
portion of the Sercel Products.  Representative acknowledges that the six (6) 
month non-competition agreement contained above is an integral part of this 
Agreement, is reasonably necessary to protect the interest of Sercel upon 
termination of Representative's engagement hereunder, and that Sercel would 
not enter into this Agreement with Representative absent such agreement.  
Except as already set forth herein, Representative shall immediately and 
fully disclose to Sercel any interests or activities of Representative which 
may conflict with the interests of Sercel under this Agreement, including, 
without limitation, any agreement by Representative to perform activities in 
connection with the products or services of any competitor of Sercel or any 
affiliate of Sercel.  From time to time as requested by Sercel, 
Representative shall certify to Sercel in writing regarding the existence, or 
lack thereof, of such a conflict of interest.  Sercel acknowledges that one 
of the primary business activities of Representative is the rental of Input 
Output equipment, which equipment competes with Sercel Products, and such 
activities shall in no way be deemed to violate the provisions of this 
Section 14.

     15.  TERMINATION.  This Agreement may be terminated at any time:

          a.   by the mutual agreement of the parties; or

          b.   by either party upon giving a notice of termination to the 
     other party in the event the other party fails to perform, observe or 
     comply with any of the obligations or undertakings of such other party 
     which are contained in this Agreement, and such failure has not been 
     cured within ten (10) days after the terminating party has given a 
     written notice specifying such failure to the other party.

     Following any such termination, Sercel shall pay a commission to 
Representative in circumstances where the efforts of Representative prior to 
the effective termination date would otherwise entitle Representative to 
receive a commission in accordance with the provisions of this Agreement, 
provided that Sercel may deduct from such payment the amount of any losses 
and expenses suffered or incurred by Sercel as a direct result of any breach 
of this Agreement by Representative.

                                     -11-

<PAGE>

     Notwithstanding the above, Sercel shall be entitled to immediately 
terminate this Agreement effective upon the giving of notice to 
Representative in the event that: (i) Sercel has reasonable cause to believe 
that Representative or others acting in association with or on behalf of 
Representative have committed, or intend to commit, a violation of the FCPA; 
(ii) Representative refuses or is unable to make the certification described 
in Section 12; or (iii) Representative ceases doing business as a going 
concern, makes an assignment for the benefit of creditors, admits in writing 
its inability to pay its debts as they become due or such fact is determined 
by judicial proceedings, files a voluntary petition in bankruptcy, is 
adjudicated a bankrupt or an insolvent, files a petition seeking for itself 
any reorganization, rearrangement, composition, readjustment, liquidation, 
dissolution, or similar arrangement under any present or future statute, law 
or regulation, or files an answer admitting the material allegations of a 
petition filed against it in any such proceedings, consents to or acquiesces 
in the appointment of a trustee, receiver, or liquidator of, all or any 
substantial part of its assets or properties, or if it or the holders of its 
common stock shall take any action contemplating its dissolution or 
liquidation.  In such event, the right of Representative to receive any 
unpaid commissions or other payments from Sercel shall be forfeited, and 
Sercel shall have no further liability to Representative under this Agreement.

     Except for Sercel's liability to pay commissions as described above in 
this Section, Representative hereby waives any claim against Sercel for 
compensation (in whatever form or however denominated) arising out of any 
termination of this Agreement by either party pursuant to the applicable laws 
of the jurisdiction where Representative is located or domiciled, to the 
extent permitted by such laws.

     16.  CANCELLATION OF ORDERS.  Representative acknowledges and agrees 
that orders that have been accepted by Sercel are noncancelable; provided, 
however, the foregoing shall not be construed to create any obligation on the 
part of Representative to make any payment to Sercel following the 
cancellation or attempted cancellation of an order by a Customer.

     17.  ASSIGNMENT. This Agreement may not be assigned by either party 
without the prior written consent of the other party, except that Sercel may 
assign this Agreement to (a) any affiliate of Sercel, or (b) any party 
succeeding to ownership of substantially all of the assets of Sercel, upon 
notice to, but without the consent of, Representative.

     18.  NOTICES. All notices (including demands for arbitration) and 
consents required or permitted to be given by either party under this 
Agreement shall be in writing and shall be personally delivered or sent by 
certified mail, return receipt requested, 

                                     -12-

<PAGE>

postage prepaid, to the party to which they are directed at the following 
address for such party:

     If to Representative:    Mitcham Canada Ltd.
                              P.O. Box 1175
                              Huntsville, Texas 77342
                              Attention:  Billy F. Mitcham, Jr., President

     If to Sercel:            Sercel, Inc.
                              17155 Park Row
                              P.O. Box 218909
                              Houston, Texas 77218
                              Attention:  Robert J. Albers, Executive Vice
                                   President

or at such other address as either party may hereafter notify the other in 
the manner described in this Section.  Such notices shall be deemed given 
when they are received by the party to which they are directed as evidenced 
by: (i) an acknowledgment or receipt executed by the recipient party, or (ii) 
a record of delivery or receipt prepared by an independent delivery service 
or postal agency.

     19.  ARBITRATION. All disputes involving this Agreement shall be 
submitted to an arbitrator appointed by, and operating under, the rules of 
the Judicial Arbitration and Mediation Service (J.A.M.S.).  The choice of the 
individual arbitrator shall be upon mutual agreement of Sercel and 
Representative, and the parties agree to negotiate in good faith in 
connection with the selection of the individual arbitrator.  The written 
decision of the arbitrator shall be final and binding upon the parties, and 
shall be convertible to a court judgment in the State of Texas.  The 
arbitration shall take place in the State of Texas.  The prevailing party as 
determined by the arbitrator shall be entitled to receive reasonable costs 
and reasonable attorney's fees from the non-prevailing party in addition to 
any other relief granted.  No demand for arbitration shall be made after the 
date when institution of a legal or equitable proceeding based upon the claim 
or dispute would be barred by the applicable statute of limitations of the 
State of Texas.  All demands for arbitration shall be made in accordance with 
Section 18 and shall be deemed made as of the sooner of actual receipt or the 
date the demand is placed in the United States Mail.  Any party shall be 
entitled to file a lawsuit to specifically enforce the parties' agreement to 
arbitrate and for the purpose of obtaining injunctive relief to enforce this 
Agreement.

     20.  HEADINGS.  The headings contained in this Agreement are for 
convenience or reference only, and do not form a part of this Agreement.

                                    -13-

<PAGE>

     21.  APPLICABLE LAW.  This Agreement shall be governed by the laws of 
the United States of America and the State of Texas. Representative hereby 
irrevocably consents to be subject to the personal jurisdiction of any United 
States, state or local court sitting in Harris County, Texas, U.S.A. in 
connection with any action to determine any dispute arising under this 
Agreement or to enforce the provisions hereof.  Venue for all suits and 
actions arising out of or in connection with this Agreement shall be proper 
only in the state and federal courts sitting in Harris County, Texas.  Each 
party hereto hereby irrevocably consents to the assertion of personal 
jurisdiction by such courts over such party for the limited purposes of a 
suit arising in connection with this Agreement, but neither such party waives 
requirement for service of process in the manner prescribed by law.  The 
foregoing shall not be deemed to negate the provisions of Section 19 above 
requiring arbitration by the parties in connection herewith.

     22.  EXPORT CONTROL LAWS.  All shipments made by Sercel to Customers 
shall at all times be subject to the export control laws and regulations of 
the United States of America, as such laws shall be amended from time to 
time.  Representative agrees that it shall not assist in the disposition of 
US origin Sercel Products, by way of transshipment, reexport, diversion or 
otherwise, other than in and to the Territory, except as said laws and 
regulations may expressly permit.

     23.  SEVERABILITY.  If any portion of this Agreement is declared to be 
invalid or unenforceable by a final judgment, order or decree of any court or 
administrative body having proper jurisdiction then, as to that jurisdiction 
only, such portion shall be deemed to be severed from the Agreement and the 
remainder of the Agreement shall remain in full force and effect.

     24.  WAIVER OF BREACH.  The waiver by Sercel of a breach of any 
provision of this Agreement by Representative shall not operate or be 
construed as a waiver by Sercel of any subsequent breach by Representative.

     25.  DRAFTING PARTY.  This Agreement expresses the mutual intent of the 
parties hereto. Accordingly, regardless of the preparing party, any rule of 
construction against the drafting party shall have no application to this 
Agreement.

     26.  AUTHORITY; CONFLICT. Sercel and Representative represent and 
warrant to each other that the execution, delivery and performance of this 
Agreement have been authorized by all necessary corporate action, and that 
this Agreement is a valid and binding obligation of each of them, 
respectively.  Upon execution of this Agreement, each party will present to 
the other a copy of resolutions of their respective Boards of Directors 
approving the transaction contemplated hereby, which resolutions shall be 
certified by the Secretary or Assistant Secretary of the 

                                     -14-

<PAGE>

appropriate party. Sercel and Representative represent and warrant to each 
other that, to the best of their knowledge, neither the execution and 
delivery of, nor the performance of this Agreement will conflict with or 
result in a breach of any (i) law of or any regulation, order, writ, 
injunction, or decree of any court or governmental authority of any country 
or state in which this Agreement is to be performed, or (ii) any agreement to 
which they are a party.

     27.  EXCLUSIVE EQUIPMENT LEASE AGREEMENT.  On or about the Effective 
Date, it is anticipated that Sercel and Representative (or its affiliate) 
will enter into an Exclusive Equipment Lease Agreement (the "Exclusive 
Agreement") pursuant to which Representative (or its affiliate) shall have 
the exclusive right to lease Sercel Products to third parties throughout the 
world.  Based upon the pricing structure of Sercel Products in the Exclusive 
Agreement, as compared to the commission structure contained herein, it may 
be more beneficial for Representative (or its affiliate) to purchase Sercel 
Products (typically components and not entire systems) from Sercel and lease 
them as contemplated under the Exclusive Agreement than it is for 
Representative to act as agent for the sale of Sercel Products to a Customer 
pursuant hereto. Accordingly, in any situation in which a proposed Customer 
comes to Representative for Sercel Products, Representative agrees that is 
will make a good faith determination as to whether a Customer wants to rent 
Sercel Products with an possible option to buy at a later date (which 
contract should properly come under the Exclusive Agreement) or actually buy 
the Sercel Products using some special financing which might involve renting 
(which contract should properly come under this Agreement).  Representative 
acknowledges that only Customers that purchase Sercel Products from Sercel 
will receive the benefit of Sercel's warranty, while customers that purchase 
Sercel Products from Representative (or its affiliate) following the lease of 
the equipment will not receive a warranty from Sercel or Sercel S.A.

     28.  STANDARD OF BUSINESS CONDUCT.  Representative agrees not to pay any 
commissions, fees or grant any rebates to any employee or officer of any 
proposed Customer or its affiliates or favor employees or officers of such 
proposed Customer with gifts or entertainment of significant costs or value 
or enter into any business arrangements with employees or officers of any 
such proposed Customer, other than as a representative of that proposed 
Customer, without the proposed Customer's prior written approval.

     29.  ENTIRE AGREEMENT.  This Agreement sets forth the entire agreement 
between the parties as to the subject matter hereof and supersedes any prior 
oral or written negotiations, understandings, or agreements as to such 
subject matter.  This Agreement cannot be amended except by a writing dated 
subsequent to the date hereof and executed on behalf of both parties by their 
duly authorized representatives which, in the case of Sercel, must be an 
officer.

                                    -15-

<PAGE>

     IN WITNESS WHEREOF, this Agreement has been executed on behalf of the 
parties by their duly authorized representatives as of the date first written 
above.

                                       REPRESENTATIVE:

                                       MITCHAM CANADA, LTD.



                                       By: /s/ Billy F. Mitcham, Jr.
                                          ---------------------------------
                                          Billy F. Mitcham, Jr., President



                                       SERCEL:

                                       GEOREX, INC.



                                       By: /s/ Robert J. Albers
                                          ---------------------------------
                                          Robert J. Albers, Vice President

                                    -16-

<PAGE>


                                                                SCHEDULE "1"



All new equipment manufactured by Sercel S.A. and wholly owned subsidiaries 
of Sercel S.A. (whether first tier subsidiaries or otherwise), as more 
particularly described on the price list attached here (with both the 
equipment on the attached price list as well as the prices noted thereon 
being subject to change from time to time), and all new equipment 
manufactured by Opseis, Inc. or its successors.  New Equipment shall be 
differentiated from Spare Parts on the basis that new equipment shall be 
designated on Sercel's price list and Spare Parts shall not be so designated.



<PAGE>

                                  SCHEDULE 1

                                              SERCEL SN388

- --------------------------------------------------------------------------------
       P/N                                    DESCRIPTION
- --------------------------------------------------------------------------------

                                       SN388 COMPLETE CENTRAL UNIT
                          ------------------------------------------------------
   1AAA071417B            SN388 PAM/LAPTOP HCI
   1AAA071417C            SN388 PAM DSCSI/LAPTOP HCI
   1AAA071418A            SN388 PAM/DESKTOP HCI
   1AAA071418B            SN388 PAM DSCSI/DESKTOP HCI
   1AAD073554A            SN388 APM480/DESKTOP HCI
   1AAD073554B            SN388 APM 480/30 DSCSI/DESKTOP HCI
   1AAJ072970A            SN388 APM600/DESKTOP HCI
   1AAJ072970B            SN388 APM600 DSCSI/DESKTOP HCI
   1AAH071422B            SN388 APM1200/DESKTOP HCI
   1AAH071422C            SN388 APM1200 DSCSI/DESKTOP HCI

                                   SN388 PORTABLE ACQUISITION MODULE (PAM)
                          ------------------------------------------------------
   1AAA070228A            SN388 PAM MODULE 1200 CHANNELS
   1AAA070228B            SN388 PAM DCSI MODULE 1200 CHANNELS

                                   SN388 ACQUIS. AND PROCES. MODULE (APM)
                          ------------------------------------------------------
   1AAD073553A            SN388 APM MODULE 480 CH/30SEC
   1AAD073553B            SN388 APM MODULE 480/30 DSCSI
   1AAJ072969A            SN388 APM MODULE 600 CH/40SEC
   1AAJ072969B            SN388 APM MODULE 600/40 DSCSI
   1AAH070235B            SN388 APM MODULE 1200 CH/40SEC
   1AAH070235C            SN388 APM MODULE 1200/40 DSCSI

                                          SN388 PAM/APM OPTIONS
                          ------------------------------------------------------
   1A11073551A            SN388 U.P.S.
   1A10070935A            SN388 PAM ASSEMBLY PARTS
   1A11070933A            SN388 APM ASSEMBLY PARTS

                                  SN388 MULTI CCU MODULE INTERCONNECTION
                          ------------------------------------------------------
   1AAI072480A            SN388 2CCU MULTIMODULE SET
   1AAI072481A            SN388 3CCU MULTIMODULE SET
   1AAI072482A            SN388 4CCU MULTIMODULE SET

                                 SN388 LAPTOP HUMAN COMPUTER INTERF.(HCI)
                          ------------------------------------------------------
   1A10071172B            HC1388 LAPTOP WORK STATION
     3170110              HCI388 CD-ROM READER

                                          SN388 LAPTOP OPTIONS
                          ------------------------------------------------------
   790071769A             SN388 PORTABLE CONTAINER
   1A12071088A            HCI385 LAPTOP 12/18VDC PWR SPLY

<PAGE>

                                              SERCEL SN388

- --------------------------------------------------------------------------------
       P/N                                    DESCRIPTION
- --------------------------------------------------------------------------------

                                  SN388 DESKTP HUMAN COMPUT. INTERF.(HCI)
                          ------------------------------------------------------
   1A11071010A            HCI388 DESKTOP WORK STATION
     3170132              GX BOARD FOR 2ND SCREEN
     3170110              HCI388 CD-ROM READER

                                          SN388 HCI ASSEMBLY PARTS
                          ------------------------------------------------------
   1A11072933A            HCI388 SCREEN+PROCES.ASSY.PART
   1A11071235A            HCI388 CD+CARTR.ASSY.PARTS

                                               SN388 PRINTER
                          ------------------------------------------------------
   1A10074142A            SN388 LAPTOP PRINTER
   1A11074081A            SN388 DESKTOP PRINTER

                                          SN388 LAND FIELD UNITS
                          ------------------------------------------------------
   1A45069496A            SN388 CROSSING STATION UNIT (CSU)
   1A40069228A            SN388 STATION UNIT (SU-1)
   1A81074572A            SN388 1-CH STATION UNIT B (SU-1/B)
   1A40069230A            SN388 STATION UNIT (SU-6)
   1A80074216A            SN388 6-CH STATION UNIT B (SU-6/B)
   1ABA073451A            SN388 STATION UNIT (SU-6/0,5ms)
   1A41069500A            SN388 POWER STATION UNIT (PSU)
   1A82074479A            SN388 6-CH POWER STATION UNIT (PSU-6)
   1A42071696A            SN388 TRANSVERSE REPEATER UNIT (TRU)
   1A44070142A            SN388 REPEATER UNIT FOR SU-1

                                         SN388 SUBMERSIBLE UNITS
                          ------------------------------------------------------
   1A45074884A            SUBMERSIBLE CROSSING STAT. UNIT (CSU/S)
   1A40074933A            SUBMERSIBLE STATION UNIT (SU-6/S)
   1A80074878A            SUBMERSIBLE STATION UNIT (SU-6B/S)
   1A41074880A            SUBMERSIBLE POWER STATION UNIT (PSU/S)
   1A82074881A            6-CH SUBMERSIBLE STATION UNIT (PSU-6/S)
   1A81074879A            1-CH SUBMERSIBLE STATION UNIT (SU-1B/S)


<PAGE>

                                              SERCEL SN388

- --------------------------------------------------------------------------------
       P/N                                    DESCRIPTION
- --------------------------------------------------------------------------------

                                      SN388 VEHICLE TRACKING SYSTEM
                          ------------------------------------------------------
   1A17074840A            SN388 MASTER RECEIVER UNIT (M-MRU)
   1A17075015A            SN388 SLAVE RECEIVER UNIT (S-MRU)
   1A17075237A            0 dB PLASTIC ROOF ANTENNA SET
   1A17075238A            0 dB MAGNETIC ANTENNA SET
   1A17075077A            5 dB ANTENNA FOR S-MRU
   1A11071010A            WORKSTATION MONITOR FOR MRU
   1A17075138A            VEHICLE TRACKING SOFTWARE

                                        SN388 PERIPHERAL DEVICES
                          ------------------------------------------------------
   1ACB070237B            SN388 TEST AND MAINTENANCE SYSTEM
   1ACA070236B            SN388 LINE TESTER (LT388)
   1A50071188A            WINTERIZED SN388 LINE TESTER DISPLAY

                                         SN388 SPARE PART KIT
                          ------------------------------------------------------
   1A10075191A            SN388 SPARE BOARDS FOR PAM (1ST LEV.)
   1A10070238A            SN388 COMPLETE SET OF PAM BOARDS
   1A10070238B            SN388 COMPLETE SET OF PAM DSCSI BOARDS
   1A11075192A            SN388 SPARE BOARDS FOR APM480 (1ST LEV.)
   1A11070239A            SN388 COMPLETE SET APM480 BOARDS
   1A11070239B            SN388 COMPLETE SET OF APM480 SCSI BOARDS
   1A11075193A            SN388 SPARE BOARDS APM600/1200 (1ST LEV)
   1A11070240A            SN388 COMPLETE SET APM600/1200 BOARDS
   1A11070240B            SN388 COMPL SET APM600/1200 DSCSI BOARDS
   1ABE070999A            SN388 SU-6 SPARE PART (COMPONENT LEV.)
   1ABE070998A            SN388 SU-1 SPARE PART (COMPONENT LEV.)
   1A58071433A            SN388 TMS SPARE PART (COMPONENT LEV.)
   1A21070251A            SN388 TOOL SET FIELD UNIT
   1A57070918B            SN388 LT SPARE PART (COMPONENT LEV.)


<PAGE>


                                  SERCEL VE416
- ------------------------------------------------------------------------
    P/N                           DESCRIPTION
- ------------------------------------------------------------------------
                           VE416 BASIC CONFIGURATION
              ----------------------------------------------------------
17AA068898A     VE416 DIGITAL PILOT GENERATOR (DPG)
17AA073982A     VE416 DPG FOR GPS REAL TIME
17AB068899A     VE416 DIGITAL SERVO DRIVE (DSD)
17AB073983A     VE416 DSD FOR GPS REAL TIME
              ----------------------------------------------------------
                             VE416 ASSEMBLY PARTS
              ----------------------------------------------------------
1723064118      VE416 ASSY PARTS FOR DPG
              ----------------------------------------------------------
                               VE416 SPARE PARTS
              ----------------------------------------------------------
1720064131      VE416 DSD-DPG SPARE PART COMPONENT LEVEL
1721064132A     VE416 DSD-DPG SPARE PART BOARD LEVEL
1721074096A     VE416 DSD-DPG/GPS SPARE PART BOARD LEVEL
1713063609A     VE416 SPARE AVS
              ----------------------------------------------------------
                                 VE416 OPTIONS
              ----------------------------------------------------------
  3150038       VE416 PRINTER 12/220V
1724066941      VE416 VIBRATOR HARNESS SET
              ----------------------------------------------------------
                         VE416 VQC BASIC CONFIGURATION
              ----------------------------------------------------------
1BAB075257A     VE416 VIBRATOR QUALITY CONTROL (VQC 88)
              ----------------------------------------------------------
                           VE416 VQC SOFTWARE PACKAGE
              ----------------------------------------------------------
1BAA073557A     VE416 QC VIBROSEIS SOFTWARE
              ----------------------------------------------------------
                      VE416 GPS POSITIONING STAND ALONE KIT
              ----------------------------------------------------------
1725074332A     VE416 GPS POSITIONING STAND ALONE SET
- ------------------------------------------------------------------------



<PAGE>


                              SERCEL TAPE TRANSPORT
- ------------------------------------------------------------------------
    P/N                           DESCRIPTION
- ------------------------------------------------------------------------
                          TT CD488-B CARTRIDGE DRIVE
              ----------------------------------------------------------
1649072919A     CD488-B CARTRIDGE DRIVE
              ----------------------------------------------------------
                             TT CD488-B SPARE PARTS
              ----------------------------------------------------------
  3120036       CD488-B SPARE DRIVE ONLY
  3530194       CD488-B POWER SUPPLY
1617071891A     CD480 SCSI UPGRADE KIT
- ------------------------------------------------------------------------

<PAGE>

Cab. PAGES AMET36                         TARIFS                   le:17/04/96

Famille: 716 CABLE TRANSMISSION                 S/Famille: 40 TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
070000333      FLUTE 6M MR 6 SORTIES HERMA4       ESPACES DE 1M BC16S
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 6 M
              6 M, 6 SORTIES CONNECTEURS          6 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 1 M.             SPACED OF 1 M
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC 16S A CHAQUE         CONNECTORS BC16S AT EACH END
              EXTREMITE
- -------------------------------------------------------------------------------
070000334      FLUTE 12OM MR 6 SORTIES HERMA4     ESPACEES DE 20M BC16S
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTHS 120M
              120M, 6 SORTIES CONNECTEURS         6 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 20M.             SPACED OF 20 M
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC16S A CHAQUE          CONNECTORS BC16S AT EACH END
              EXTREMITE 
- -------------------------------------------------------------------------------
070000356      FLUTE 120M MR 3 SORTIES HERMA4     ESPACEES 40M  BC16S
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 120M
              120M, 3 SORTIES CONNECTEURS         3 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 40M.             SPACED OF 40M
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC16S A CHAQUE          CONNECTORS BC16S AT EACH END
              EXTREMITE
- -------------------------------------------------------------------------------
070000357      FLUTE 120M MR 3 SORTIES HERMA4     ESPACEES DE 40M BC16S + BC16P
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 120M
              120M, 3 SORTIES CONNECTEURS         3 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 40M.             SPACED OF 40M
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC16S ET BC16P          CONNECTORS BC16S AND BC16P
- -------------------------------------------------------------------------------
070000343      FLUTES 135M, MR, 3 SORTIES H4      ESPACEES 45M, BC16S/BC16P
              CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 135M
              135M, 3 SORTIES CONNECTEURS         3 TAKE OUT CONNECTORS HERMA4
              HERMA4 ESPACEES DE 45M.             SPACED OF 45M.
              CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
              CONNECTEURS BC16S ET BC16P.         CONNECTORS BC16S ET BC16P
- -------------------------------------------------------------------------------
070000344     FLUTES 135M, MR, 3 SORTIES H4      ESPACEES 45M, BC16S/BC16S
             CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 135M
             135M, 3 SORTIES CONNECTEURS         3 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 45M.             SPACED OF 45M
             CABLE MEDIUM RANGE                  CABLE MEDIUM RANGE
             CONNECTEURS BC16S A CHAQUE          CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000354     FLUTE 140M LA 2 SORTIES HERMA4      ESPACEES DE 70M BC16S
             CABLE LIGNE SN 388 LONGUEUR          SN 388 LINE CABLE LENGTH 140M
             140M, 2 SORTIES CONNECTEURS          2 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 70M.              SPACED OF 70M
             CABLE LOW ATTENUATION                CABLE LOW ATTENUATION
             CONNECTEURS EC16S A CHAQUE           CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------

<PAGE>

Cab. PAGES AMET36                         TARIFS                   le:17/04/96

Famille: 716 CABLE TRANSMISSION                 S/Famille: 40 TELEMETRIQUES 388
- -------------------------------------------------------------------------------
   Code
- -------------------------------------------------------------------------------
070000355     FLUTE 140M LA 2 SORTIES HERMA4    ESPACEES DE 70M BC16S + BC16P
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 140M
             140M, 2 SORTIES CONNECTEURS        2 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 70M.            SPACED OF 70M
             CABLE LOW ATTENUATION              CABLE LOW ATTENUATION
             CONNECTEURS BC16S ET BC16P         CONNECTORS BC16S AND BC16P
- -------------------------------------------------------------------------------
070000335     FLUTE 144M MR 6 SORTIES HERMA4    ESPACEES 24M BC16S
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 144M
             144M, 6 SORTIES CONNECTEURS        6 TAKE OUT CONNECTORS HERMA4
             CABLE MEDIUM RANGE                 CABLE MEDIUM RANGE
             CONNECTEURS BC16S A CHAQUE         CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000340     FLUTES 150M, MR, 6 SORTIES H4     ESPACEES 25M, CONNECTOR BC16S
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 150M
             150M, 6 SORTIES CONNECTEURS        6 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 25M.            SPACED OF 25M
             CABLE MEDIUM RANGE                 CABLE MEDIUM RANGE
             CONNECTEURS BC16S A CHAQUE         CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000341     FLUTES 150M, MR, 3 SORTIES H4     ESPACEES 50M, CONNEC. BC16S/P
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 150M
             150M, 3 SORTIES CONNECTEURS        3 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 50M.            SPACED OF 50M
             CABLE MEDIUM RANGE                 CABLE MEDIUM RANGE
             CONNECTEURS BC16S ET BC16P.        CONNECTORS BC16S AND BC16P
- -------------------------------------------------------------------------------
070000342     FLUTES 150M, MR, 3 SORTIES H4     ESPACEES 50M, BC16S/BC16S
             CABLE LIGNE SN 388 LONGUEUR        SN 388 LINE CABLE LENGTH 150M
             150M, 3 SORTIES CONNECTEURS        3 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 50M.            SPACED OF 50M
             CABLE MEDIUM RANGE                 CABLE MEDIUM RANGE
             CONNECTEURS BC16S A CHAQUE         CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000352     FLUTE 160M LA 2 SORTIES HERMA4     ESPACEES DE 80M  BC16S
             CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 160M
             160M, 2 SORTIES CONNECTEURS         2 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 80M.             SPACED OF 80M
             CABLE LOW ATTENUATION               CABLE LOW ATTENUATION
             CONNECTEURS EC16S A CHAQUE          CONNECTORS BC16S AT EACH END
             EXTREMITE
- -------------------------------------------------------------------------------
070000353     CABLE SN 388 160M LA 2 SORTIES     HERMA4 ESP. DE 80M BC16S+BC16P
             CABLE LIGNE SN 388 LONGUEUR         SN 388 LINE CABLE LENGTH 160M
             160M, 2 SORTIES CONNECTEURS         2 TAKE OUT CONNECTORS HERMA4
             HERMA4 ESPACEES DE 80M.             SPACED OF 80M
             CABLE LOW ATTENUATION               CABLE LOW ATTENUATION
             CONNECTEURS BC16S ET BC16P          CONNECTORS BC16S AND BC16P
- -------------------------------------------------------------------------------




<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 17/04/96

Famille: 716 CABLE TRANSMISSION       S/Famille: 40  TELEMETRIQUES 388
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000339  FLUTES 180M, MR, 6 SORTIES H4     ESPACEES 30M, CONNECT. BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 180M
           180M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 30M.           SPACED OF 30M
           CABLE MEDIUM RANGE                CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000345  FLUTES 180, LOW, 3 SORTIES H4     ESPACEES 60M, BC16S/BC16P
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 180M
           180M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 60M.           SPACED OF 60M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S ET BC16P.       CONNECTORS BC16S AND BC16P
- --------------------------------------------------------------------------------
070000346  FLUTES 180M, LOW, 3 SORTIES H4    ESPACEES 60M, BC16S/BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 180M
           180M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 60M.           SPACED OF 60M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
- --------------------------------------------------------------------------------
070000336  FLUTE 186M, MR, 6 SORTIES H4      ESPACEES 31M, CONNECT. BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 186M
           186M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 31M.           SPACED OF 31 M
           CABLE MEDIUM RANGE                CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000144  FLUTE 195M LA 3 SORTIES HERMA4    ESPAC. 65M    BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 195M
           195M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 65M.           SPACED OF 65 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
- --------------------------------------------------------------------------------
070000330  FLUTE 195M LA 3 SORTIES HERMA4    ESP. 65M BC16S + BC16P
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 195M
           195M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 65M.           SPACED OF 65 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S ET BC16P        CONNECTORS BC16S AND BC16P
- --------------------------------------------------------------------------------
070000331  FLUTE 210M LA 3 SORTIES HERMA4    ESPAC. 70M   BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 210M
           210M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 70M.           SPACED OF 70 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------

<PAGE>

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Famille: 716 CABLE TRANSMISSION       S/Famille: 40  TELEMETRIQUES 388
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000332  FLUTE 210M LA 3 SORTIES HERMA4    ESP. 70M BC16S + BC16P
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 210M
           210M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 70M.           SPACED OF 70 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S ET BC16P        CONNECTORS BC16S AND BC16P
- --------------------------------------------------------------------------------
070000516  FLUTE 225M, LA, 3 SORTIES H4      ESPACEES 75M, BC16S  BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 225M
           225M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 75M.           SPACED OF 75 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000327  FLUTE 240M MR 6 SORTIES HERMA4    ESP. 40M BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 240M
           240M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 40M.           SPACED OF 40 M
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000328  FLUTE 240M LA 3 SORTIES HERMA4    ESP. 80M BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 240M
           240M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 80M.           SPACED OF 80 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000329  FLUTE 240M LA 3 SORTIES HERMA4    ESPAC. 80M BC16S+BC16P
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 240M
           240M, 3 SORTIES CONNECTEURS       3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 80M.           SPACED OF 80 M
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S ET BC16P        CONNECTORS BC16S AND BC16P
- --------------------------------------------------------------------------------
070000326  FLUTE 270M MR 6 SORTIES HERMA4    ESP. 45M BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 270M
           270M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 45M.           SPACED OF 45 M
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000325  FLUTE 300M MR 6 SORTIES HERMA4    ESP. 50M BC16S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 300M
           300M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 50M.           SPACED OF 50 M
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE
- --------------------------------------------------------------------------------


<PAGE>

Cab.  PAGES AMET36              TARIFS                le: 17/04/96

Famille:  716  CABLE TRANSMISSION         S/Famille:  40  TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
070000423   FLUTE 300M MR 6 SORTIES  LRS     5501 ESPACEES 50M  BC16S
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 300M
           300M,  6 SORTIES CONNECTEURS      6 TAKE OUT CONNECTORS LRS 5501
           LRS 5501 ESPACEES DE 50M.         SPACED OF 50M.
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE

- -------------------------------------------------------------------------------
070000155   FLUTE 330M,  6 SORTIES HERMA4    ESPACEES DE 55M BC16S
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 330M
           330M,  6 SORTIES CONNECTEURS      6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 55M.           SPACED OF 55M.
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE

- -------------------------------------------------------------------------------
070000322   FLUTE 360M MR 6 SORTIES  LRS     5501 ESPACES DE 60M  BC16S
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 360M
           360M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS LRS 5501
           LRS 5501 ESPACEES DE 60M.         SPACED OF 60M.
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END

- -------------------------------------------------------------------------------
070000323   FLUTE 360M LR 6 SORTIES HERMA    4 ESPACEES DE 60M  BC16S 
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 360M
           360M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA 4
           HERMA 4 ESPACEES DE 60M.          SPACED OF 60M.
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END

- -------------------------------------------------------------------------------
070000324   FLUTE 390M LA 6 SORTIES HERMA4   ESPAC.  65M  BC16S
           CABLE LINGNE SN 388 LONGUEUR      SN 388 LINE CABLE LENGTH 390M
           390M, 6 SORTIES CONNECTEURS       6 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 65M.           SPACED OF 65M.
           CABLE LOW ATTENUATION             CABLE LOW ATTENUATION
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END
           EXTREMITE

- -------------------------------------------------------------------------------
512220039   FLUTE 388 165m 3TO H4            ESPACES 55m-2 BC 16 S
           CABLE LIGNE SN 388 LONGUEUR       SN 388 LINE CABLE LENGTH 165M
           165M,  3 SORTIES CONNECTEURS      3 TAKE OUT CONNECTORS HERMA4
           HERMA4 ESPACEES DE 55M.           SPACED OF 55M.
           CABLE MEDIUM RANGE.               CABLE MEDIUM RANGE
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S AT EACH END

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



<PAGE>

Cab.  PAGES AMET36              TARIFS                le: 17/04/96

Famille:  716  CABLE TRANSMISSION         S/Famille:  40  TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
512220040   FLUTE 388 165 m 3 TO H4          ESPACES 55m-BC16S+BC16P
           CABLE LIGNE SN388 LONGUEUR        SN 388 LINE CABLE LENGTH 165M
           165M,  3 SORTIES CONNECTEURS      3 TAKE OUTS CONNECTORS
           HERMA4 ESPACEES DE 55M.           HERMA4 SPACED OF 55M. CABLE
           CABLE MEDIUM RANGE.               MEDIUM RANGE  CONNECTORS
           CONNECTEURS BC16S ET BC16P        BC16S AND BC16P

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


<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 17/04/96

Famille: 716 CABLE TRANSMISSION       S/Famille: 40  TELEMETRIQUES 388
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000337  TRANSVERSE LONGUEUR SM            CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE LENGTH
           LONGUEUR 5M.                      5M
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000358  TRANSVERSE LG 10M  BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 10M5M.                   LENGTH 10 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000359  TRANSVERSE LONGUEUR 20M           CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 20M                      LENGTH 20 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH END
           EXTREMITE
- --------------------------------------------------------------------------------
070000360  TRANSVERSE LONGUEUR 50M           CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 50M                      LENGTH 50 METERS
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000361  TRANSVERSE LONGUEUR 100M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 100M                     LENGTH 100 METERS
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000362  TRANSVERSE LONGUEUR 110M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 110M                     LENGTH 110 METERS
           CONNECTEURS BC16S A CHAQUE        CONNECTORS BC16S ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000363  TRANSVERSE LONGUEUR 120M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 120M                     LENGTH 120 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000364  TRANSVERSE LONGUEUR 150M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 150M                     LENGTH 150 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000365  TRANSVERSE LONGUEUR 200M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 200M                     LENGTH 200 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------


<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 17/04/96

Famille: 716 CABLE TRANSMISSION       S/Famille: 40  TELEMETRIQUES 388
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
070000366  TRANSVERSE LONGUEUR 220M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 220 M                    LENGTH 220 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000367  TRANSVERSE LONGUEUR 250M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 250 M                    LENGTH 250 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000368  TRANSVERSE LONGUEUR 300M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 300 M                    LENGTH 300 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000369  TRANSVERSE LONGUEUR 320M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 320 M                    LENGTH 320 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000370  TRANSVERSE LONGUEUR 330M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 330 M                    LENGTH 330 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000371  TRANSVERSE LONGUEUR 350M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 350 M                    LENGTH 350 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000338  TRANSVERSE LONGUEUR 400M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 400 M                    LENGTH 400 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000372  TRANSVERSE LONGUEUR 450M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 450 M                    LENGTH 450 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------
070000373  TRANSVERSE LONGUEUR 500M          CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 500 M                    LENGTH 500 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE
- --------------------------------------------------------------------------------

<PAGE>

Cab.  PAGES  AMET36          TARIFS                le: 17/04/96

Famille: 716 CABLE TRANSMISSION          S/Famille: 40  TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
070000374   TRANSVERSE LONGUEUR 550M         CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 550 M                    LENGTH 550 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000375   TRANSVERSE LONGUEUR 600M         CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 600 M                    LENGTH 600 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000376   TRANSVERSE LONGUEUR 800 M        CONNECTEURS BC16S
           CABLE TRANSVERSE SN 388           SN 388 TRANSVERSE CABLE
           LONGUEUR 800 M                    LENGTH 800 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

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



<PAGE>

Cab.  PAGES  AMET36          TARIFS                le: 17/04/96

Famille: 716 CABLE TRANSMISSION          S/Famille: 40  TELEMETRIQUES 388
- -------------------------------------------------------------------------------
  Code
- -------------------------------------------------------------------------------
070000377   EXTENSION LONGUEUR 110M          CONNECTEURS BC16S
           CABLE EXTENSION SN 388            SN 388 EXTENSION CABLE
           LONGUEUR 110 M                    LENGTH 110 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000378   EXTENSION LONGUEUR 200M          CONNECTEURS BC16S
           CABLE EXTENSION SN 388            SN 388 EXTENSION CABLE
           LONGUEUR 200 M                    LENGTH 200 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000379   EXTENSION LONGUEUR 300M          CONNECTEURS BC16S
           CABLE EXTENSION SN 388            SN 388 EXTENSION CABLE
           LONGUEUR 300 M                    LENGTH 300 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000380   EXTENSION LONGUEUR 330M          CONNECTEURS BC16S
           CABLE EXTENSION SN 388            SN 388 EXTENSION CABLE
           LONGUEUR 330 M                    LENGTH 330 METERS
           CONNECTEURS BC16S A CHAQUE        BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
700000321   EXTENSION SN388 LONGUEUR 350M   CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 350 M                   LENGTH 350 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000381   EXTENSION LONGUEUR 400M         CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 400 M                   LENGTH 400 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000382   EXTENSION LONGUEUR 450M         CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 450 M                   LENGTH 450 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000383   EXTENSION LONGUEUR 500M         CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 500 M                   LENGTH 500 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

- -------------------------------------------------------------------------------
070000384   EXTENSION LONGUEUR 600M         CONNECTEURS BC16S
           CABLE EXTENSION SN 388           SN 388 EXTENSION CABLE
           LONGUEUR 600 M                   LENGTH 600 METERS
           CONNECTEURS BC16S A CHAQUE       BC16S CONNECTORS ON BOTH SIDE
           EXTREMITE

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



<PAGE>

Cab. PAGES AMET36        TARIFS                       le: 17/04/96

Famille: 716 CABLE TRANSMISSION          S/Famille: 40 TELEMETRIQUES 388
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000385   EXTENSION LONGUEUR 700M            CONNECTEURS BC16S
            CABLE EXTENSION SN 388             SN 388 EXTENSION CABLE
            LONGUEUR 700 M                     LENGTH 700 METERS
            CONNECTEURS BC16S A CHAQUE         BC16S CONNECTORS ON BOTH SIDE
            EXTREMITE
- --------------------------------------------------------------------------------
070000386   EXTENSION LONGUEUR 800M            CONNECTEURS BC16S
            CABLE EXTENSION SN 388             SN 388 EXTENSION CABLE
            LONGUEUR 800 M                     LENGTH 800 METERS
            CONNECTEURS BC16S A CHAQUE         BC16S CONNECTORS ON BOTH SIDE
            EXTREMITE
- --------------------------------------------------------------------------------



<PAGE>

Cab. PAGES AMET36        TARIFS                       le: 17/04/96

Famille: 726 BRETELLE                    S/Famille: 20 GEOPHONES TERRESTRES
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000128    BRET. 6 SM4ULD BG2 POINTE 4CM     ESPAC. 15M TETE QUEUE 10M H4
            BRETELLE DE 6 GEOPHONES SM4ULD     STRING OF 6 GEOPHONES SM4ULD
            FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
            BOITIER TYPE BG2 POINTE 4CM        HOUSING TYPE BG2 SPIKE 4 CM
            RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
            DE 15M BRIN DE TETE 10M, BRIN      15 M. LEAD IN 10 M, TAIL 10 M
            DE QUEUE 10M TERMINE PAR UN        ENDED BY CONNECTOR HERMA4
            CONNECTEUR HERMA4                  CABLE 3 WIRES WITH D LOOPS
            CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
            ANNEAUX ESPACES DE 1.3M            WIRING 1x6 SERIE
            EPINGLE DE RAMASSAGE
            CABLAGE 1x6
- --------------------------------------------------------------------------------
070000319    BRET. 6 SM4ULD BG2 TRIPOD         ESP 5M TETE 10M QUEUE 10M HERMA4
            BRETELLE DE 6 GEOPHONES SM4ULD     STRING OF 6 GEOPHONES SM4ULD
            FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
            BOITIER TYPE BG2 AVEC TRIPODE      HOUSING TYPE BG2 WITH TRIPOD
            RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
            DE 10M BRIN DE TETE 10M, BRIN      10 M. LEAD IN 10 M, TAIL 10 M
            DE QUEUE 10M TERMINE PAR UN        ENDED BY CONNECTOR HERMA4
            CONNECTEUR HERMA4                  CABLE 3 WIRES WITH D LOOPS
            CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
            ANNEAUX ESPACES DE 1.3M            WIRING 1x6 SERIE
            EPINGLE DE RAMASSAGE
            CABLAGE 1x6
- --------------------------------------------------------------------------------
070000451    BRET. 6 SM4ULD BG2 POINTE 8CM     ESP. 15M TETE QUEUE 15M H4
            BRETELLE DE 6 GEOPHONES SM4ULD     STRING OF 6 GEOPHONES SM4ULD
            FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
            BOITIER TYPE BG2 POINTE 8CM        HOUSING TYPE BG2 SPIKE 8 CM
            RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
            DE 15M BRIN DE TETE 15M, BRIN      15 M. LEAD IN 15 M, TAIL 15 M
            DE QUEUE 15M TERMINE PAR UN        ENDED BY CONNECTOR HERMA4
            CONNECTEUR HERMA4                  CABLE 3 WIRES WITH D LOOPS
            CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
            ANNEAUX ESPACES DE 1.3M            WIRING 1x6 SERIE
            EPINGLE DE RAMASSAGE
            CABLAGE 1x6
- --------------------------------------------------------------------------------
070000522    BRET 6 SM4ULD BG2 POINTE 8 CM     ESP. 5M TETE 2.5M
            BRETELLE DE 6 GEOPHONES SM4ULD     STRING OF 69 GEOPHONES SM4ULD
            FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
            BOITIER TYPE BG2 POINTE 8CM        HOUSING TYPE BG2 SPIKE 8 CM
            RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
            DE 5M BRIN DE TETE 2.5M            5 M. LEAD IN 2.5 M
            TERMINE PAR UN CONNECTEUR          ENDED BY CONNECTOR HERMA4
            HERMA4                             CABLE 3 WIRES WITH D LOOPS
            CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
            ANNEAUX ESPACES DE 1.3M            WIRING SERIES
            EPINGLE DE RAMASSAGE
            CABLAGE SERIE
- --------------------------------------------------------------------------------



<PAGE>

Cab. PAGES AMET36                         TARIFS                  le: 17/04/96

Famille: 726  BRETELLE                        S/Famille: 20 GEOPHONES TERRESTRES
- -------------------------------------------------------------------------------
   Code
- -------------------------------------------------------------------------------
070000145     BRET. 9 SM4ULD BG2 POINTE 8CM      ESP 5M TETE 10M HERMA4
             BRETELLE DE 9 GEOPHONES SM4ULD      STRING OF 9 GEOPHONES SM4ULD
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE 10M,              5 M. LEAD IN 10 M
             TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR HERMA4
             HERMA4                              CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------
070000146     BRET. 9 GSC20D BG2 POINTE 8CM      ESP. 5M TETE 10M HERMA4
             BRETELLE DE 9 GEOPHONES GSC20D      STRING OF 9 GEOPHONES GSC20D
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE 10M,              5 M. LEAD IN 10 M
             TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR HERMA4
             HERMA4                              CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------
070000633     BRET. 9 SM4U LD BG2 POINTE 8CM     TETE QUEUE 10M HERMA4
             BRETELLE DE 9 GEOPHONES SM4ULD      STRING OF 9 GEOPHONES SM4ULD
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE, QUEUE 10         5 M. LEAD IN AND TAIL 10 M
             M TERMINE PAR UN CONNECTEUR         ENDED BY CONNECTOR HERMA4
             HERMA4                              CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------


<PAGE>

Cab. PAGES AMET36                         TARIFS                  le: 17/04/96

Famille: 726  BRETELLE                        S/Famille: 20 GEOPHONES TERRESTRES
- -------------------------------------------------------------------------------
   Code
- -------------------------------------------------------------------------------
070000147     BRET. 9 SM4ULD BG2 POINTE 8CM      ESP 5M TETE 10M MUELLER CLIP
             BRETELLE DE 9 GEOPHONES SM4ULD      STRING OF 9 GEOPHONES SM4ULD
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE 10M,              5 M. LEAD IN 10 M
             TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR MUELLER CLIP
             MUELLER CLIP                        CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------
070000148     BRET. 9 GSC20DX BG2 POINTE 8CM     ESP 5M TETE 10M MUELLER CLIP
             BRETELLE DE 9 GEOPHONES GSC20D      STRING OF 9 GEOPHONES GSC20DX
             FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLED IN
             BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
             RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
             DE 5M BRIN DE TETE 10M,              5 M. LEAD IN 10 M
             TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR MUELLER CLIP
             MUELLER CLIP                        CABLE 3 WIRES WITH D LOOPS
             CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M  - CARRYING HASP
             ANNEAUX ESPACES DE 1.3M             WIRING 3x3
             EPINGLE DE RAMASSAGE                
             CABLAGE 3x3
- -------------------------------------------------------------------------------




<PAGE>

Cab. PAGES AMET36       TARIFS               le: 17/04/96

Famille: 726 BRETELLE           S/Famille: 20  GEOPHONES TERRESTRES
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000115  BRET. 12 SM4ULD BG2 POINTE 8CM      ESP. 5M TETE 10M HERMA4
           BRETELLE DE 12 GEOPHONES SM4ULD     STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 10M,             5 M. LEAD IN 10 M
           TERMINE PAR UN CONNECTEUR           ENDED BY CONNECTOR HERMA4
           HERMA4                              CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 3x4
           EPINGLE DE RAMASSAGE
           CABLAGE 3x4
- --------------------------------------------------------------------------------
070000129  BRET. 12 SM4ULD BG2 POINTE 8CM      ESP. 5M QUEUE TETE 10M HERMA4
           BRETELLE DE 12 GEOPHONES SM4ULD     STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 10M,             5 M. LEAD IN 10 M, TAIL 10M
           BRIN DE QUEUE 10M TERMINE PAR       ENDED BY CONNECTOR HERMA4
           UN CONNECTEUR HERMA4                CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 3x4
           EPINGLE DE RAMASSAGE
           CABLAGE 3x4
- --------------------------------------------------------------------------------
070000142  BRET. 12 SM4ULD BG2 TRIPODE         ESP. 10M TETE QUEUE 15M 2H4
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 AVEC TRIPODE       HOUSING TYPE BG2 WITH TRIPOD
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 10M BRIN DE TETE 15M,            10 M. LEAD IN 15 M, TAIL 15M
           BRIN DE QUEUE 15M TERMINE PAR       ENDED BY TWO CONNECTORS HERMA4
           DEUX CONNECTEUR HERMA4              CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 3x4
           EPINGLE DE RAMASSAGE
           CABLAGE 3x4
- --------------------------------------------------------------------------------
070000151  BRET. 12 GSC20D BG2 POINTE 8CM      ESP. 5M TETE 10M HERMA4
           BRETELLE DE12 GEOPHONES GSC20D      STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 10M,             5 M. LEAD IN 10 M ENDED
           TERMINE PAR UN CONNECTEUR           BY CONNECTOR HERMA4
           HERMA4                              CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 1x12
           EPINGLE DE RAMASSAGE
           CABLAGE 12x1
- --------------------------------------------------------------------------------


<PAGE>

Cab. PAGES AMET36       TARIFS               le: 17/04/96

Famille: 726 BRETELLE           S/Famille: 20  GEOPHONES TERRESTRES
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000152  BRET. 12SM4ULD  BG2 POINTE 8CM      ESP. 5M TETE 5M QUEUE 5M H4
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE ET QUEUE 5M      5 M. LEAD IN 5M TAIL 5M ENDED
           TERMINE PAR                         BY CONNECTOR HERMA4
           UN CONNECTEUR HERMA4                CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 1x12
           EPINGLE DE RAMASSAGE
           CABLAGE 12x1
- --------------------------------------------------------------------------------
070000318  BRET. 12 SM4U LD POINTE 8CM +       TRIPOD ESPAC. 5M  HERMA 4  10M
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM ET      HOUSING TYPE BG2 SPIKE 8 CM
           TRIPODE RESISTANCE 1.21KOHM         AND TRIPOD RESISTOR 1.21KOHM
           ESPACES DE 5M BRIN DE TETE 10M      INTERVAL 5M LEAD IN 10M ENDED
           TERMINE PAR                         BY CONNECTOR HERMA4
           UN CONNECTEUR HERMA4                CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 4x3
           EPINGLE DE RAMASSAGE
           CABLAGE 4x3
- --------------------------------------------------------------------------------
070000320  BRET. 12 SM4ULD BG2 8CM R=375       ESP. 12M TETE 12M HERMA4
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 POINTE 8CM         HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES        RESISTOR 1.21 KOHM, INTERVAL
           DE 12M BRIN DE TETE 12M             12 M. LEAD IN 12M ENDED
           TERMINE PAR                         BY CONNECTOR HERMA4
           UN CONNECTEUR HERMA4                CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 3x4
           EPINGLE DE RAMASSAGE
           CABLAGE 3x4
- --------------------------------------------------------------------------------
070000450  BRET. 12 SM4U LD TRIPODE ESP.       10M TETE QUEUE 15M 2H4  R=1KH
           BRETELLE DE12 GEOPHONES SM4ULD      STRING OF 12 GEOPHONES SM4ULD
           FREQUENCE 10 HZ MONTES DANS         FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BG2 AVEC TRIPODE       HOUSING TYPE BG2 WITH TRIPOD
           RESISTANCE 1.00KOHM, ESPACES        RESISTOR 1.00 KOHM, INTERVAL
           DE 10M BRIN DE TETE 15M,            10 M. LEAD IN 15 M, TAIL 15M
           BRIN DE QUEUE 15M TERMINE PAR       ENDED BY TWO CONNECTORS HERMA4
           DEUX CONNECTEUR HERMA4              CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC            SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M             WIRING 12 IN SERIES
           EPINGLE DE RAMASSAGE
           CABLAGE 12x1
- --------------------------------------------------------------------------------

<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 17/04/96

Famille: 726 BRETELLE                 S/Famille: 20 GEOPHONES TERRESTRES
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000149  BRET. 12 GSC20D BG2 POINTE 8CM     ESP. 5M TETE 10M MUELLER CLIP
           BRETELLE DE12 GEOPHONES GSC20D     STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
           BOITIER TYPE BG2 POINTE 8CM        HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 10M,            5 M. LEAD IN 10 M ENDED
           TERMINE PAR                        BY CONNECTOR MUELLER CLIP
           UN CONNECTEUR MUELLER CLIP         CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
           ANNEAUX ESPACES DE 1.3M            WIRING 1X12
           EPINGLE DE RAMASSAGE
           CABLAGE 12X1
- --------------------------------------------------------------------------------
07000150   BRET. 12 GSC20D BG2 POINTE 8CM     ESP. 5M TETE 5M MUELLER CLIP
           BRETELLE DE12 GEOPHONES GSC20D     STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10 HZ MONTES DANS        FREQUENCY 10 HZ ASSEMBLED IN
           BOITIER TYPE BG2 POINTE 8CM        HOUSING TYPE BG2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES       RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 5 M,            5 M. LEAD IN 5 M ENDED
           TERMINE PAR                        BY CONNECTOR MUELLER CLIP
           UN CONNECTEUR MUELLER CLIP         CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC           SPACED 1.3M. CARRYING HASP
           ANNEAUX ESPACES DE 1.3M            WIRING 1X12
           EPINGLE DE RAMASSAGE
           CABLAGE 12X1
- -------------------------------------------------------------------------------

                                      82

<PAGE>

Cab. PAGES AMET 36       TARIFS               le: 24/04/96

Famille: 726 BRETELLE                 S/Famille: 30 GEOPHONES MARAIS
- --------------------------------------------------------------------------------
  Code
- --------------------------------------------------------------------------------
070000424  BRET. MARAIS 12 GSC20DX EM2      8CM TETE 5M H4 ESP. 5M DES.0.65
           BRETELLE DE12 GEOPHONES GSC20D   STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10HZ MONTES DANS       FREQUENCY 10 HZ. ASSEMBLED IN
           BOITIER TYPE BM2 POINTE 8CM      HOUSING TYPE BM2 SPIKE 8 CM
           RESISTANCE 1.21KOHM, ESPACES     RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 5 M.          5 M. LEAD IN 5 M ENDED BY
           TERMINE PAR UN CONNECTEUR        CONNECTOR HERMA4, DROP 0.65M
           HERMA 4, DESCENTE 0.65M          CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC         SPACED 1.3M. CARRYING HASP
           ANNEAUX ESPACES DE 1.3M          WIRING 1X12
           EPINGLE DE RAMASSAGE
           CABLAGE 12X1
- --------------------------------------------------------------------------------
070000438   BRET. MAR. 12 GSC20D BM2 15CM   ESP. 5M DESC. 2.5M TETE 5M H4
           BRETELLE DE12 GEOPHONES GSC20D   STRING OF 12 GEOPHONES GSC20DX
           FREQUENCE 10 HZ MONTES DANS      FREQUENCY 10 HZ ASSEMBLIED IN
           BOITIER TYPE BM2 POINTE 15 CM    HOUSING TYPE BM2 SPIKE 15 CM
           RESISTANCE 1.21KOHM, ESPACES     RESISTOR 1.21 KOHM, INTERVAL
           DE 5M BRIN DE TETE 5 M,          5 M. LEAD IN 5 M ENDED BY
           TERMINE PAR UN CONNECTEUR        CONNECTOR HERMA4, DROP 2.5 M
           HERMA 4, DESCENTE 2.5 M          CABLE 3 WIRES WITH D LOOPS
           CABLE 3 CONDUCTEURS AVEC         SPACED 1.3M . CARRYING HASP
           ANNEAUX ESPACES DE 1.3M          WIRING 1x12
           EPINGLE DE RAMASSAGE
           CABLAGE 12x1
- --------------------------------------------------------------------------------

                                      83

<PAGE>
FAMILLE:  716 CABLE TRANSMISSION                   S/FAMILLE:  20  ADAPTATEURS
- ------------------------------------------------------------------------------
   CODE
- ------------------------------------------------------------------------------
070000475    ADAPTATEUR 12  10S/2  HERMA4
- ------------------------------------------------------------------------------
070000476    ADAPTATEUR 12  35/3MCA
- ------------------------------------------------------------------------------
070000478    ADAPTATEUR 12  35/2  HERMA4
- ------------------------------------------------------------------------------
070000481    ADAPTATEUR 12  35/MCA
- ------------------------------------------------------------------------------
070000473    ADAPTATEUR  BC35/2HERMA4
- ------------------------------------------------------------------------------
070000474    HERMA4/2  HERMA4
- ------------------------------------------------------------------------------
070000477    ADAPTATEUR  HERMA4/3HERMA4
- ------------------------------------------------------------------------------
070000479    HERMA4/ HERMA4 LONGUEUR  50M
- ------------------------------------------------------------------------------
070000480    ADAPTATEUR  HERMA4/MCA
- ------------------------------------------------------------------------------



Vibrators

     AMG  P  23/M27
     AMG  P  28/M28




                                                                            24

<PAGE>

                                 OPSEIS EAGLE

1.   MAIN EQUIPMENT
     A.  Opseis Eagle Universal Central
         Recording Station (CRS) Compatible for
         Use with all energy sources (2005450-999)
         Equipment consist of:
         -  OPSEIS Seismic Processing Unit Model 915 (2005264-002)
            (Includes 8 - 2 Meg DRP Boards)
         -  OPSEIS Operator Display Terminal Model 930 (2006009-001)
         -  OPSEIS 3480 1/2" Cartridge Tape Drive (2006007-002)
         -  OPSEIS Plotter, 11 inch (OYO GS 612) Model 935 (2006008-001)
         -  OPSEIS RF Unit Model 911 (2006895-001)
         -  Software Selectable Digital Notch and Low-Cut Filters
         -  One (1) Set YAGI CRS Antennas, 110 V Rotors, and Wiring Harness 
             (2005660-001)
         -  3 FT 110V CRS Equipment Cabinet (2006006-001)
         -  110V UPS Power Backup System
         -  Vibroseis Interface 0
             Consisting of:
             -  Surface Excitation Interface Unit Model 925 (2005449-003)
             -  Correlation Software and Hardware
             -  CRS Software
             -  Cable Set

     B.  Opseis Eagle Universal Seismic
                       (6 Channels)
                       (4 Channels)
                       (2 Channels)
         Acquisition Remote Unit (SAR) Model 813/6
         (each accommodates 6 recording channels)
         This configuration provides 1000 channels
         plus 50% roll along. (2006001-999)
         Each SAR consist of:
         -  Case, PRC (2005801-999)
         -  SAR Transceiver (2005214-999)
         -  6 Channel - 24 Bit SAR Logic Unit (2006002-066)
         -  Antenna Assembly, Yagi w/Poles, Dom, 6NC (2006004-003)
            & Cover Bag (2005728-001)
         -  No Audio Kit (2006025-001)
         -  Solar Panel and 10 AH Battery

     C.  RF Blastor Model 815/816 (Radio
         Controlled Shooting Device) (2005662-002)
         with Voice Communication
     D.  Battery Charger, 10AH, 110V, Model 715
         (36 SAR Charging Capability) (2005377-003)

     E.  Manuals



                                                                    25



<PAGE>

TOTAL MAIN EQUIPMENT

 II. OPTIONS

     A. Antenna Mast (60 ft.) (1110000-015)

     B. Antenna Mast Spares (2005580-001)

     C. Portable CRS Cases (2006011-001)
        $16,474

III. OPTIONAL TEST EQUIPMENT & SPARES

     A. OPSEIS 110 V Eagle SAR Tester
        $104,500
        (2005403-001)

     B. OPSEIS 110/220V Eagle SAR Tester
        (2005403-003)

     C. OPSEIS 110 V Transceiver Maintenance
        $93,500
        Equipment (2005554-001)
        consisting of:

           Computer System                       (1192004-001)
           RF Tester                             (2005445-001)
           RF Alignment Fixture                  (2006169-001)
           IFR Spectrum Analyzer Mdl A-7550      (2005556-001)
           Leader Power Supply Mdl A-LPS-164A    (1481007-005)
           BK Precision Function Gen. Adl 3011B  (1343000-010)
           BK Precision Freq. Counter Mdl 1856   (1343000-011)
           Tektronixs Oscilloscope Mdl 2445B     (1343000-001)
           Wavetak Signal Generator Mdl 2510A    (2005555-001)
           Bird Wattmeter Mdl 43                 (2005557-001)

     D. Power Unit Capacity Tester
        (Provides 8 SAR Capability) (2005363-003)

     E. Deployment Aid model 710
        (2005558-002)

     F. L.C. Tester (2006063-001)

     G. Standard System Spares

        1. CRS Spares (2005550-999)
           Attachment A

        2. SAR Spares (2005559-999)
           Attachment B

        3. Vibrosais Spares (2006103-999)
           Attachment C

<PAGE>

     H. Expanded System Spares

        1. CRS Spares (2005550-999)
           Attachment A

        2. SAR Spares (2005559-999)
           Attachment B

        3. OPSEIS System Component Spares
           Attachment C

        4. CRS/SAR Tester Spare Parts
           Attachment D

        5. Vibrosais Spares (2006103-999)
           Attachment E

        6. Pelton Spares 0
           Attachment F 0



<PAGE>

                            OPSEIS PRODUCT QUOTATION

                             Standard System Spares
                                 Attachment A
                           Board Level Spares for CRS


Description                     Part No.
- -------------------------------------------

Data Display IOC                2001235-001
DO Graphic Processor            2009536-001
Operator Display IOC            2001230-001
VME Hard Disk Module            2009904-001
Global Bus System Processor     2009817-001
4 MB Ram                        2009821-001
RF IOC 2                        2009915-001
Mag Tape IOC 2                  2009845-001
CRS RF Interface                2005237-001
Data Receiver Processor         2005789-001
Octal Serial Port               2009837-001
Transmit/Receive Switch         2005248-001
Spectrum Analyzer               2005249-001
CRS Receivers                   2005246-002
CRS Transmitter                 2005247-003

TOTAL BOARD LEVEL SPARES FOR CRS
ITEM III.G.1, MAIN QUOTATION


<PAGE>

Standard System Spares
Attachment B
Board Level Spares for SAR

Description                                Part No.
- ------------------------------------------------------

SAR 24 Bit Digital Board                   2005201-001
SAR Battery Pack                           2005203-001
SAR 24 Bit Analog Board                    2005736-001
SAR 24 Bit Motherboard                     2005688-001
SAR 24 Bit Power Regulator                 2006108-001
SAR Power Converter w/Long Sleep           2005210-002
Antenna Assembly, Yagi w/Poles. Dom, BNC   2006004-003
Complete Transceiver                       2005214-999
Solar Panel (Standard)                     2009933-001

TOTAL BOARD LEVEL SPARES FOR SAR
ITEM III.G.2, MAIN QUOTATION


Standard System Spares
Attachment C
Board Level Spares for Vibroseis

Description                                Part No.
- ------------------------------------------------------

SEIU Interface                             2009769-001
Octal Sanal Bd                             2009837-001
Dual Power Supply 24V                      1481008-001

TOTAL BOARD LEVEL SPARES FOR VIBROSEIS
ITEM III.G.3, MAIN QUOTATION



<PAGE>

                           EXPANDED SYSTEM SPARES
                                ATTACHMENT A
                         BOARD LEVEL SPARES FOR CRS



Description                                       Part No.
- --------------------------------------------------------------------------

Oyo Plotter Spares (Detailed List                 2005549-001
 Available upon Request)
Data Display IOC                                  2001235-001
DD Graphic Processor                              2009536-001
Operator Display IOC                              2001230-001
OPSEIS 3480 1/2" Cartridge Tape Drive             1191017-001
VME Hard Disk Module                              2009904-001
Global Bus System Processor                       2009817-001
4 MB Ram                                          2009821-001
RF IOC 2                                          2009915-001
Mag Tape IOC 2                                    2009845-001
CRS RF Interface                                  2005237-001
Data Receiver Processor                           2005789-001
Octal Serial Port                                 2009837-001
Transmit/Receive Switch                           2005248-001
Spectrum Analyzer                                 2005249-001
Set of Internal & External Cables                 2005551-001
CRS Receivers                                     2005246-002
CRS Transmitter                                   2005247-003
SPU Power Supply                                  1481000-001
RF Unit 12V Power Supply                          1481000-009
RF Unit 5V Power Supply                           1481000-010

TOTAL BOARD LEVEL SPARES FOR CRS
ITEM III.H.1, MAIN QUOTATION

<PAGE>

                           EXPANDED SYSTEM SPARES
                                ATTACHMENT B
                         BOARD LEVEL SPARES FOR SAR

A. ELECTRONIC ENCLOSURE

Description                                       Part Number      Qty.
- --------------------------------------------------------------------------
SAR 24 Bit Digital Board                          2005201-001       13
SAR Battery Pack                                  2005203-001       20
"BNC" Type Antenna Connector                      C64097            13
Geophone Jumper Connectors - Mating               1215000-029       25
SAR 24 Bit Analog Board                           2005736-001       15
SAR 24 Bit Motherboard                            2005688-001       13
SAR 24 Bit Power Regulator                        2006108-001       13
SAR Power Converter w/Long Sleep                  2005210-002       13
SAR Internal Cable Set (Standard)                 2005578-001       13
Antenna Assembly, Yagi w/Poles,
Dom, BNC                                          2006004-003       15
Complete Transceiver                              2005214-999       13
Solar Panel (Standard)                            2009933-001       13
Male Wirelink Connectors                          1215000-037       13
Female Wirelink Connectors                        1215000-039       25

TOTAL BOARD LEVEL SPARES FOR SAR
ITEM III.H.2, MAIN QUOTATION


<PAGE>

                           EXPANDED SYSTEM SPARES
                                ATTACHMENT D
                           CRS/SAR TESTER SPARES



Description                                       Part Number
- --------------------------------------------------------------------------

Emulator Board                                    2009399-001
Set External Cables                               2009566-008
Global Bus System Processor                       2009817-002
RF Tester Interface                               2005258-001
6 Ch. Test Signal Synthesizer                     2005722-001
Data Receiver Processor (.5 Meg)                  2009892-002
68000 POD Cable                                   1682010-001
SAR System Interface                              2009396-002

TOTAL CRS/SAR TESTER SPARES
ITEM III.H.4, MAIN QUOTATION



<PAGE>

                   SUBSIDIARIES OF THE COMPANY

Mitcham Canada, Ltd. an Alberta corporation with its principal place of 
business to be located in Calgary, Alberta, Canada.









                               II-9


<PAGE>

       CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

   
We hereby consent to the incorporation by reference in Amendment No. 1 
to this Registration Statement on Form S-3 of our report dated February 23, 
1996, included in the Form 10-KSB of Mitcham Industries, Inc. for the year 
ended January 31, 1996.

/s/ HEIN + ASSOCIATES LLP

HEIN + ASSOCIATES LLP
Certified Public Accountants
Houston, Texas
October 24, 1996
    




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