TGC INDUSTRIES INC
DEF 14A, 2000-04-11
PLASTICS, FOIL & COATED PAPER BAGS
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                               SCHEDULE 14A INFORMATION

              PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE
                       SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant  /X/

Filed by a party other than the Registrant / /

Check the appropriate box:

     // Preliminary Proxy Statement / / Confidential, for use of /X/ Definitive
Proxy  Statement the  Commission  only (as / / Definitive  Additional  Materials
permitted by Rule / / Soliciting Material Pursuant to 14a-6 (e)(2)

    Rule 14a-11 (c) or Rule 14a-12

                         TGC INDUSTRIES, INC.

- ------------------------------------------------------------------------------
             (NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

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

    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (check the appropriate box):

/X/ No fee required.

//  Fee computed on table below per Exchange Act Rules 14a-6 (i) (4) and
    0-11
    (1) Title of each class of securities to which transaction applies.
    (2) Aggregate number of securities to which transaction applies.
    (3) Per unit price or other underlying value of transaction computed

        pursuant  to  Exchange  Act Rule 0-11 (set forth the amount on which the
        filing fee is calculated and state how it was determined).

    (4) Proposed maximum aggregate value of transaction.
    (5) Total fee paid.

/ / Fee paid previously with preliminary materials.

/   / Check box if any part of the fee is offset as  provided  by  Exchange  Act
    Rule 0-11 (a) (2) and identify the filing for which the  offsetting  fee was
    paid  previously.  Identify the previous  filing by  registration  statement
    number, or the Form or Schedule and the date of its filing.


<PAGE>



                             TGC INDUSTRIES, INC.

                         1304 Summit Avenue, Suite 2
                              Plano, Texas 75074


                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                             To Be Held May 11, 2000

To the Shareholders of
TGC INDUSTRIES, INC.

     The  annual  meeting  of the  shareholders  of TGC  Industries,  Inc.  (the
"Company") will be held at 1304 Summit Avenue,  Suite 2, Plano, Texas on May 11,
2000, at 10:00 A.M., Plano, Texas time, for the following purposes:

     1.  To elect seven (7) directors to serve until the next annual  meeting of
         shareholders and until their respective successors shall be elected and
         qualified;

     2. To approve the Company's 1999 Stock Option Plan;

     3.  To ratify the selection of Grant Thornton LLP as independent auditors;

     4.  To  consent,  by  vote  of the  holders  of the  Company's  outstanding
         Preferred  Stock,  voting  as  a  class,  to a  new  series  of  Senior
         Convertible Preferred Stock; and

     5.  To transact such other business as may properly come before the meeting
         and any adjournment thereof.

     Information regarding matters to be acted upon at this meeting is contained
in the accompanying Proxy Statement. Only shareholders of record at the close of
business on March 15, 2000, are entitled to notice of and to vote at the meeting
and any adjournment thereof.

     All  shareholders are cordially  invited to attend the meeting.  Whether or
not you plan to attend, please complete,  sign, and return promptly the enclosed
proxy in the accompanying  addressed envelope for which postage is prepaid.  You
may revoke the proxy at any time before the commencement of the meeting.

                                           By Order of the Board of Directors:

                                           Allen T. McInnes
                                           Secretary

Plano, Texas
April 7, 2000



<PAGE>



                                  IMPORTANT

     IT IS IMPORTANT THAT YOUR STOCK BE REPRESENTED AT THE MEETING REGARDLESS OF
THE NUMBER OF SHARES YOU HOLD.  PLEASE  COMPLETE,  SIGN, AND RETURN PROMPTLY THE
ENCLOSED  PROXY IN THE  ACCOMPANYING  ENVELOPE,  WHETHER OR NOT YOU INTEND TO BE
PRESENT AT THE MEETING.


<PAGE>



                             TGC INDUSTRIES, INC.

                         1304 Summit Avenue, Suite 2
                              Plano, Texas 75074


                                PROXY STATEMENT
                  ANNUAL MEETING OF SHAREHOLDERS -- May 11, 2000


                             SOLICITATION OF PROXIES

     This Proxy  Statement is furnished to  shareholders  in connection with the
solicitation of proxies by the management of TGC Industries, Inc. (the "Company"
or "TGC") on behalf of the Board of  Directors  of the  Company  for the  annual
meeting of shareholders to be held at 1304 Summit Avenue,  Suite 2, Plano, Texas
on May 11, 2000, and at any adjournment  thereof,  for the purpose of submitting
to a vote of the  stockholders the actions and proposals set forth in this Proxy
Statement.  The Notice of Meeting,  the form of Proxy,  and this Proxy Statement
are being mailed to the Company's shareholders on or about April 3, 2000.


     Although  solicitation  (the  total  expense  of which will be borne by the
Company) is to be made primarily through the mail, the Company's officers and/or
employees  and those of its  transfer  agent may solicit  proxies by  telephone,
telegram, or personal contact, but in such event no additional compensation will
be  paid  by the  Company  for  such  solicitation.  Further,  brokerage  firms,
fiduciaries,  and  others may be  requested  to  forward  solicitation  material
regarding the meeting to beneficial owners of the Company's Common and Preferred
Stock,  and in such event the Company will  reimburse  them for all  accountable
costs so incurred.

                       RECORD DATE AND VOTING SECURITIES


     The Board of  Directors  of the  Company has fixed the close of business on
March 15, 2000 (the "Record Date") as the date for determination of shareholders
entitled to notice of and to vote at the meeting.  As of the Record Date,  there
were 2,267,124  shares of the Company's  Common Stock  outstanding and 1,110,250
shares of the Company's  Series C 8% Convertible  Exchangeable  Preferred  Stock
("Preferred Stock") outstanding.

     The  Company's  Restated  Articles of  Incorporation  authorize  25,000,000
shares of Common Stock with a par value of $.30 per share and  4,000,000  shares
of Preferred Stock with a par value of $1.00 per share. In voting on all matters
expected to come before the meeting, a shareholder will be entitled to one vote,
in person or by proxy,  for each share of Common Stock and Preferred  Stock held
in his or her name on the  Record  Date.  The  Company's  Restated  Articles  of
Incorporation prohibit cumulative voting.

     A copy of the Annual Report to  shareholders  of the Company for its fiscal
year ended  December 31, 1999, is being mailed with this Proxy  Statement to all
such shareholders entitled to vote.






<PAGE>



                     ACTION TO BE TAKEN AND VOTE REQUIRED

     Action  will be taken at the  meeting to (1) elect seven (7) members to the
Board of Directors, (2) approve the Company's 1999 Stock Option Plan, (3) ratify
the selection of Grant Thornton LLP as independent auditors, and (4) consent, by
vote of the Company's  outstanding  Preferred  Stock voting as a class, to a new
series  of  Senior  Convertible  Preferred  Stock.  The  proxy  will be voted in
accordance with the directions  specified  thereon,  and otherwise in accordance
with the judgment of the persons  designated  as proxies.  Any proxy on which no
directions  are  specified  will be voted for the  election of  directors  named
herein,  and otherwise in accordance with the judgment of the persons designated
as proxies.  Any person executing the enclosed proxy may nevertheless  revoke it
at any time prior to the actual  voting  thereof by filing with the Secretary of
the Company either a written instrument expressly revoking it or a duly executed
proxy bearing a later date.  Furthermore,  such person may nevertheless elect to
attend  the  meeting  and vote in  person,  in which  event,  the proxy  will be
suspended.  The election of the seven (7) members to the Board of Directors, the
approval of the 1999 Stock Option Plan, and the ratification of the selection of
auditors  requires  the  affirmative  vote of the  holders of a majority  of the
outstanding shares of the Common Stock and Preferred Stock present, in person or
by proxy, at the annual meeting.  The consent to the creation of a new series of
Senior Convertible  Preferred Stock requires the affirmative vote of the holders
of  two-thirds  (2/3) of the issued and  outstanding  shares of Preferred  Stock
entitled to vote thereon, voting as a class.

ELECTION OF DIRECTORS

     Seven (7) directors are to be elected at the annual meeting of shareholders
to comprise the entire  membership of the Company's  Board of Directors.  Unless
otherwise  instructed,  the proxy holders will vote the proxies received by them
for the nominees  shown below for a term of one year and until their  successors
are duly elected and have qualified.


     As  previously  reported,  on December  13, 1999,  WEDGE  Energy  Services,
L.L.C.,  an affiliate of WEDGE Group,  Inc.  ("WEDGE"),  a diversified  Houston,
Texas firm with interests in oil and gas services, purchased a $2,500,000 8 1/2%
convertible subordinated debenture (the "Debenture") of the Company. Proceeds of
the  financing,  together with other  available  funds,  are being  utilized for
working capital and an expanded capital expenditure program.  The Debenture,  at
WEDGE's  option,  can be converted into either  convertible  preferred  stock or
common stock at a price of $1.15 per share. Certain terms of the WEDGE financing
are set forth below under the heading "Certain Terms of the WEDGE Financing."

     The Debenture Purchase Agreement provides that so long as (a) the Debenture
remains  outstanding or (b) WEDGE owns shares of capital stock  representing 10%
of the capital stock of TGC on a fully diluted basis,  the Board of Directors of
TGC will support and place on the ballot at each  election of directors  two (2)
nominees to the Board of Directors (the "WEDGE Board  Nominees").  Further,  TGC
has  agreed  (i) to expand  its Board of  Directors  to seven (7)  directors  by
creating two (2) new positions to be filled by the WEDGE Board Nominees and (ii)
that its  Board of  Directors  will not  contain  more than  seven (7)  members.
Pursuant to the Bylaws of the Company,  the Board of Directors  has created such
two new positions on its Board of Directors,  and WEDGE has selected  William H.
White, President of WEDGE, and Pasquale V. Scaturro as its nominees to fill such
positions.  Messrs.  White and Scaturro will serve until the next annual meeting
of shareholders and until their successors are duly elected and have qualified.

     As a result of WEDGE's  right to nominate  two (2)  directors,  certain TGC
shareholders  have  entered  into a Voting  Agreement  (as defined  below),  the
purpose  of which is to  contractually  bind  those  shareholders  to vote their
shares at each directors' election in favor of the WEDGE Board Nominees.  WEDGE,
TGC and certain  shareholders of TGC,  including Allen McInnes,  Wayne Whitener,
Herbert   Gardner,   William  Barrett  and  Edward  Flynn   (collectively,   the
"Shareholders"),  have entered into a Voting Agreement (the "Voting  Agreement")
in connection  with the purchase of the  Debenture by WEDGE.  Under the terms of
the Voting Agreement, the Shareholders have agreed to vote their shares in favor
of the WEDGE Board  Nominees.  The Voting  Agreement  terminates on the first to
occur of (i)  WEDGE no  longer  owning  at least  10% of the  total  issued  and
outstanding  shares  of  capital  stock of TGC on a fully  diluted  basis,  (ii)
redemption of the Debenture by TGC, or (iii) December 10, 2009. The Shareholders
hold in the aggregate shares of capital stock of TGC  representing  38.7% of the
shares of capital stock of TGC currently outstanding and entitled to vote.

     Although it is not contemplated that any nominee will be unable to serve as
a director,  in such event the proxies will be voted by the holders  thereof for
such other person as may be designated  by the current  Board of Directors.  The
Management of the Company has no reason to believe that any of the nominees will
be unable or  unwilling to serve if elected to office,  and to the  knowledge of
Management,  the nominees  intend to serve the entire term for which election is
sought.  There  are no family  relationships  by blood,  marriage,  or  adoption
between any director or executive officer.  Up to two vacancies may be filled by
the  Board  of  Directors  under  Texas  law  during  the time  between  any two
successive annual shareholder meetings if suitable persons are designated.  Each
executive  officer  of the  Company  is a nominee  as set forth  below  with the
exception of Kenneth  Uselton (age 56) who has served as  Controller  since 1995
and  Treasurer  since  August 1, 1996,  and David P.  Williams  (age 45) who has
served as Marketing  Manager  since 1991 and Vice  President of Marketing  since
November,  1997.  The  information  set forth below with  respect to each of the
nominees has been furnished by each respective nominee.


Name, Age, and

Business Experience                                  Positions with Company

- -------------------                                  ----------------------
Allen T. McInnes, 62                                 Chairman of the Board and
     Chairman of the Board since July 1993;          Secretary of the Company
     Secretary since November 1997; Chief
     Executive Officer of the Company from
     August 1993 to March 1996; Executive
     Vice-President and Director of Tenneco,
     Inc. 1960-1992; Director of Tetra
     Technologies, President and CEO since
     April 1, 1996; Director of NationsBank
     1990-1993.

     Wayne A.  Whitener,  48                         CEO and President
     Chief  Executive  Officer of the Company        of the Company
     since January  1999;  Chief  Operating
     Officer of the Company from July 1986
     to December 1998;  President of the
     Geophysical  Division since 1984;  served
     as Vice President of TGC from 1983 to
     1984; Area Manager for Grant Geophysical
     Co. from December 1978 until July 1983.

William J. Barrett, 60                               None
     Director of the Company, Secretary of the
     Company from 1986 to November 1997; Senior
     Vice President of Janney Montgomery Scott
     Inc., investment bankers, since 1966. Also
     a Director of: Supreme Industries, Inc., a
     manufacturer of specialized truck bodies
     and shuttle buses, since 1979; and American
     Country Holdings Company, Inc., a property
     and casualty insurance holding company with
     focus on transportation and hospitality
     markets.

Herbert M. Gardner, 60                               None
     Director of the Company; Senior Vice
     President of Janney Montgomery Scott Inc.,
     investment bankers, since 1978; Chairman of
     the Board and a Director of Supreme
     Industries, Inc., a manufacturer of
     specialized truck bodies and shuttle buses,
     since 1979, and President since 1992.  Also
     a Director of: Nu Horizons Electronics Corp.,
     an electronic component distributor;
     Transmedia Network, Inc., a company that
     markets a charge card offering savings to the
     company's card members at participating
     restaurants and also provides savings on
     certain other products and services; Hirsch
     International Corp., an importer of
     computerized embroidery machines and
     supplies, and developer of embroidery machine
     application software; and Co-Active Marketing
     Group, Inc., a marketing and sales promotion
     company.

Edward L. Flynn, 65                                  None
     Owner of Flynn Meyer Company,  a management
     company for the restaurant  industry,  since
     1976,  Director and Treasurer,  Citri-Lite
     Co., a soft drink company.

William H. White, 46                                 None
     President and Chief Executive Officer
     of WEDGE Group, Inc., a diversified
     firm with  interests  in oil and gas
     services,  since  1997;  Founder  and
     Chairman  of  the  Board  of  Frontera
     Resources   Corporation   and  its
     predecessor,  a privately held
     international  energy company,  since 1995,
     also served as President and Chief Executive
     Officer of Frontera from 1995 to  1996;
     Deputy  Secretary  and  Chief  Operating
     Officer  of  the  U.S. Department  of Energy
     from 1993 to 1995;  Director  of USEC Inc.,
     world'sleading  supplier of enriched
     uranium fuel for  commercial  nuclear  power
     plants since July 1998; and Director of
     Edge Petroleum Corporation,  an oil
     and gas exploration, development, and
     production company, since May 1998.

Pasquale V. Scaturro, 46                             None
     Vice President and Chief Geophysicist of
     Destiny Energy, since 1997; Co-Founder
     of Tricon Geophysics, Inc., a full service
     geophysical data processing company in
     1995; President of Seismic Specialists,
     Inc. and US Seismic, companies involved in
     the acquisition, management, and marketing
     on non-exclusive seismic surveys from
     1986 to 1995.

     The Company's Board of Directors  recommends that you vote FOR the nominees
named above for election to the Board of Directors.

APPROVAL OF 1999 STOCK OPTION PLAN

     On December  14,  1999,  the  Company's  Board of  Directors  approved  and
adopted,  subject to shareholder approval, the Company's 1999 Stock Option Plan,
a copy of which is attached  hereto as Exhibit A (the "1999 Stock Option Plan").
Shareholders  will be asked to approve the 1999 Stock  Option Plan at the annual
meeting to be held May 11, 2000.  The  following  paragraphs  summarize  certain
provisions of the 1999 Stock Option Plan and are qualified in their  entirety by
reference thereto.

     The  1999  Stock   Option  Plan   provides  for  the  granting  of  options
(collectively,  the "1999 Options") to purchase  shares of the Company's  Common
Stock to certain key employees of the Company and/or its affiliates, and certain
individuals  who are not employees of the Company or its affiliates but who from
time to time provide  substantial  advice or other assistance or services to the
Company  and/or  its  affiliates.  The 1999 Stock  Option  Plan  authorizes  the
granting of options to acquire up to 300,000 shares of Common Stock,  subject to
certain  adjustments  described below, to be outstanding at any time. Subject to
such limitations, there is no limit on the absolute number of awards that may be
granted  during the life of the 1999 Stock  Option  Plan.  At the present  time,
there are  approximately  15 employees of the  Company,  including  officers and
directors of the Company,  who, in  management's  opinion,  would be  considered
eligible to receive  grants  under the 1999 Stock Option  Plan,  although  fewer
employees  may  actually  receive  grants.  At March 15,  2000,  no options were
outstanding under the Plan.

     Authority to administer  the 1999 Stock Option Plan has been delegated to a
committee  (the  "Committee")  of the Board of  Directors.  Except as  expressly
provided by the 1999 Stock Option Plan, the Committee has the authority,  in its
discretion,  to award 1999  Options and to  determine  the terms and  conditions
(which need not be  identical)  of such 1999  Options,  including the persons to
whom, and the time or times at which,  1999 Options will be awarded,  the number
of 1999  Options to be awarded to each such person,  the  exercise  price of any
such 1999 Options,  and the form, terms and provisions of any agreement pursuant
to which such 1999  Options  will be  awarded.  The 1999 Stock  Option Plan also
provides  that the Committee may be authorized by the Board of Directors to make
cash  awards as  specified  by the Board of  Directors  to the  holder of a 1999
Option in connection  with the exercise  thereof.  Subject to the limitation set
forth  below,  the  exercise  price of the shares of stock  covered by each 1999
Option will be determined by the Committee on the date of the award.

     Unless a  Holder's  option  agreement  provides  otherwise,  the  following
provisions  will  apply to  exercises  by the  Holder of his or her  option:  No
options may be exercised during the first twelve months following grant.  During
the second year following the date of grant, options covering up to one-third of
the shares covered  thereby may be exercised,  and during the third year options
covering up to two-thirds of such shares may be exercised. Thereafter, and until
the options  expire,  the  optionee  may  exercise  options  covering all of the
shares.  Persons  over  sixty-five  on the date of grant  may  exercise  options
covering up to one-half of the shares during the first year and  thereafter  may
exercise all optioned shares. Subject to the limitations just described, options
may be exercised as to all or any part of the shares  covered  thereby on one or
more occasions,  but, as a general rule,  options cannot be exercised as to less
than one hundred shares at any one time.

     The exercise price of the shares of stock covered by each  incentive  stock
option ("ISO"),  within the meaning of Sec. 422 of the Internal  Revenue Code of
1986,  as amended (the  "Code"),  will not be less than the fair market value of
stock on the date of award of such ISO, except that an ISO may not be awarded to
any person who owns stock  possessing  more than ten percent  (10%) of the total
combined  voting  power  of all  classes  of stock of the  Company,  unless  the
exercise  price is at least one hundred  ten  percent  (110%) of the fair market
value  of  the  stock  at the  time  the  ISO is  awarded,  and  the  ISO is not
exercisable after the expiration of five years from the date it is awarded.

     The  exercise  price of the  shares of Common  Stock  covered  by each 1999
Option that is not an ISO ("NSO") will not be less than fifty  percent  (50%) of
the fair market value of the stock on the date of award.

     Payment for Common  Stock  issued upon the exercise of a 1999 Option may be
made in cash or, with the consent of the  Committee,  in whole  shares of Common
Stock  owned by the holder of the 1999  Option for at least six months  prior to
the date of exercise or, with the consent of the  Committee,  partly in cash and
partly in such shares of Common Stock.  If payment is made, in whole or in part,
with  previously  owned shares of Common Stock,  the Committee may issue to such
holder a new 1999  Option  for a number of shares  equal to the number of shares
delivered by such holder to pay the exercise  price of the previous  1999 Option
having an exercise  price equal to not less than one hundred  percent  (100%) of
the fair market value of the Common Stock on the date of such  exercise.  A 1999
Option so issued will not be  exercisable  until the later of the date specified
in an individual option agreement or six months after the date of grant.

     In  addition,  the 1999 Stock  Option  Plan  provides  two  methods for the
cashless  exercise of options.  Under the Sale  Method,  with the consent of the
Committee,  payment  in full of the  exercise  price of the  option  may be made
through the Company's  receipt of a copy of instructions  to a broker  directing
such broker to sell the stock for which the option is being exercised,  to remit
to the Company an amount equal to the aggregate  exercise  price of such option,
with balance being remitted to the holder. Under the Net Method, with consent of
the  Committee,  payment in full of the exercise price of the option may be made
based on written instructions received from the holder, by Company's issuance to
the holder of that number of shares of stock having a fair market value equal to
only the "profit  portion" of his,  her, or its option  (i.e.  the excess of the
then fair market value of the stock over the holder's exercise price).

     The  duration of each 1999 Option will be for such period as the  Committee
determines  at the time of award,  but not for more than ten years from the date
of the award in the case of an ISO, and in either case may be exercised in whole
or in part at any time or only  after a period  of time or in  installments,  as
determined by the Committee at the time of award,  except that after the date of
award, the Committee may accelerate the time or times at which a 1999 Option may
be exercised.

     In the event of any  change in the number of  outstanding  shares of Common
Stock effected  without  receipt of  consideration  therefor by the Company,  by
reason of a stock dividend, or split,  combination,  exchange of shares or other
recapitalization,  merger,  or otherwise,  in which the Company is the surviving
corporation,  the aggregate number and class of reserved shares,  the number and
the class of shares subject to each  outstanding  1999 Option,  and the exercise
price of each outstanding 1999 Option shall be automatically adjusted accurately
and  equitably to reflect the effect  thereon of such change.  Unless a holder's
option  agreement  provides  otherwise,  a  dissolution  or  liquidation  of the
Company,  certain  mergers  or  consolidations  in which the  Company is not the
surviving  corporation,  or certain  transactions  in which another  corporation
becomes the owner of fifty  percent (50%) or more of the total  combined  voting
power of all classes of stock of the  Company,  shall cause such  holder's  1999
Options then  outstanding  to  terminate,  but such holder shall have the right,
immediately  prior to such  transaction,  to exercise such 1999 Options  without
regard to the determination as to the periods and installments of exercisability
made  pursuant to such holder's  option  agreement if (and only if) such options
have not at that time expired or been terminated.

     The 1999 Stock Option Plan will  terminate on December 14, 2009, or on such
earlier  date as the  Board  of  Directors  may  determine.  Any  stock  options
outstanding at the termination date will remain outstanding until they have been
exercised, terminated, or have expired.

     The 1999 Stock Option Plan may be terminated,  modified,  or amended by the
Board of Directors at any time without further shareholder approval, except that
shareholder  approval is required for any amendment that: (a) changes the number
of shares of Common Stock subject to the 1999 Stock Option Plan, (b) changes the
designation  of the class of  employees  eligible to receive 1999  Options,  (c)
decreases the price at which ISOs may be granted, (d) removes the administration
of the 1999 Stock Option Plan from the Committee,  or (e) without the consent of
the affected  holder,  causes the ISOs granted  under the 1999 Stock Option Plan
and outstanding at such time that satisfied the  requirements of Sec. 422 of the
Code to no longer satisfy such requirements.

     The Company's  Board of Directors  recommends that you vote FOR approval of
the Company's 1999 Stock Option Plan.



RATIFICATION OF SELECTION OF AUDITORS

     The  Board  of  Directors  has  appointed  Grant  Thornton  LLP to serve as
auditors of the Company.  The Company's  Board of Directors  recommends that you
vote FOR  ratification  of the selection of Grant  Thornton LLP as the Company's
auditors for the fiscal year ending December 31, 2000.





CONSENT TO NEW SERIES OF SENIOR CONVERTIBLE PREFERRED STOCK

     The Debenture  Purchase  Agreement  grants WEDGE a right of conversion with
respect to the Debenture.  As more specifically  described in both the Debenture
Purchase Agreement and the Debenture  Agreement,  the unpaid principal amount of
the Debenture or any portion thereof may, at the election of WEDGE, be converted
into (a)  shares of Common  Stock at an  initial  conversion  price per share of
Common  Stock of $1.15 or  (b)(i) a new  preferred  stock  designated  as 8-1/2%
Senior Convertible Preferred Stock (the "Senior Preferred Stock"), at an initial
conversion  price per share of such Senior Preferred Stock of $1.15, but only if
66-2/3% of the holders of TGC's 8% Series C Convertible  Exchangeable  Preferred
Stock,  par value $1.00 per share (the "Series C Preferred  Stock"),  consent to
such conversion (the "Consent") in accordance with the terms of the statement of
the  designations,  rights and  preferences  for the Series C Preferred Stock or
(ii) shares of 8% Series D Convertible  Preferred Stock (the "Series D Preferred
Stock") with terms which are pari passu with TGC's Series C Preferred  Stock, or
any outstanding  series of preferred stock of TGC with rights and terms superior
thereto, at an initial conversion price per share of Series D Preferred Stock of
$1.15, if the necessary Consent is not obtained. The initial conversion price is
subject  to  adjustment  from time to time in  accordance  with the terms of the
Debenture  Agreement.  Under the terms of the Debenture Purchase Agreement,  TGC
has agreed to use its best  efforts to obtain the Consent  thereby  granting TGC
the right to create the Senior Preferred Stock.

     If the  Consent  is  obtained,  then  TGC  will  cause  to be  filed  those
designations,  rights  and  preferences  in the form  substantially  similar  to
Exhibit B attached  hereto(the  "Terms of the Senior Preferred Stock") and WEDGE
will  automatically  convert the Debenture into Senior  Preferred  Stock,  which
action will convert  $2,500,000 of debt into equity and  materially  improve the
capital position of the Company. The Terms of the Senior Preferred Stock provide
that  such  preferred  stock  will be  senior  in  rights  to  dividends  and on
liquidation  to all classes and series of Stock of TGC,  including  the Series C
Preferred Stock. Further, holders of the Senior Preferred Stock will be entitled
to receive  cumulative  cash  dividends  at a rate of 8-1/2% per year before any
dividend or distribution in cash or other property (other than dividends payable
in stock ranking junior to the Senior  Preferred  Stock as to dividends and upon
liquidation,  dissolution  or winding-up) on any class or series of stock of TGC
ranking junior to the Senior  Preferred Stock as to dividends or on liquidation,
dissolution  or  winding-up  is  declared  or paid  or set  apart  for  payment.
Dividends on the Senior  Preferred Stock are payable when and as declared by the
Board of Directors of TGC on December 1 and June 1 of each year,  beginning June
1, 2000. Notwithstanding the foregoing, dividends in arrears may be declared and
paid at any  time.  Accrued  dividends  will not bear  interest.  Dividends  are
payable in cash; provided,  however, that for each dividend declared and payable
through  December 1, 2000, such dividend  payment shall be by payment in kind by
issuance of additional  shares of Senior Preferred Stock (the "Senior  Preferred
Stock PIK  Dividend").  Holders of Senior  Preferred  Stock have the option with
respect to each dividend payment due and payable after December 1, 2000 to elect
whether such dividend shall be by cash or Senior  Preferred  Stock PIK Dividend.
Notwithstanding the foregoing,  TGC will only pay the Senior Preferred Stock PIK
Dividend  if its EBITDA for the six months  ended with the  previous  quarter is
less than 125% of TGC's  obligation for such dividend  payment and for all other
dividends  and interest due and payable on all other  outstanding  securities of
TGC as of such time.  Holders of Senior  Preferred Stock will be entitled to one
vote per share of Senior  Preferred  Stock held by them.  The  Senior  Preferred
Stock will vote with the Common  Stock upon all matters  other than those which,
by law, the holders of shares of Senior  Preferred  Stock have the right to vote
as a separate class.

     If the  Consent  is not  obtained,  then  WEDGE  has the  right to elect to
convert the  Debenture  into Series D  Preferred  Stock.  If WEDGE makes such an
election,  then TGC will,  immediately prior to such election by WEDGE, cause to
be filed  designations,  rights and preferences for the Series D Preferred Stock
as set forth in the  Debenture  Purchase  Agreement  (the "Terms of the Series D
Preferred  Stock").  The Terms of the Series D Preferred Stock provide that such
preferred  stock will have dividend  rights and rights on liquidation  which are
pari  passu  with the  rights of any  outstanding  shares of Series C  Preferred
Stock.  Holders of the Series D  Preferred  Stock  will be  entitled  to receive
cumulative  cash  dividends  at a rate of 8% per year  before  any  dividend  or
distribution  in cash or other property  (other than dividends  payable in stock
ranking  junior  to the  Series  D  Preferred  Stock  as to  dividends  and upon
liquidation,  dissolution  or winding-up) on any class or series of stock of TGC
ranking  junior  to  the  Series  D  Preferred  Stock  as  to  dividends  or  on
liquidation,  dissolution  or  winding-up  is  declared or paid or set apart for
payment.  Dividends  on the Series D  Preferred  Stock are  payable  when and as
declared by the Board of Directors of TGC on December 1 and June 1 of each year,
beginning June 1, 2000. Notwithstanding the foregoing,  dividends in arrears may
be declared  and paid at any time.  Accrued  dividends  will not bear  interest.
Dividends  are  payable  in cash;  provided,  however,  that  for each  dividend
declared and payable through December 1, 2000, such dividend payment shall be by
payment in kind by issuance  of  additional  shares of Series D Preferred  Stock
(the  "Series D Preferred  Stock PIK  Dividend").  Holders of Series D Preferred
Stock have the option  with  respect to each  interest  payment  due and payable
after December 1, 2000 to elect whether such dividend shall be by cash or Series
D Preferred Stock PIK Dividend. Notwithstanding the foregoing, TGC will only pay
the Series D Preferred Stock PIK Dividend if its EBITDA for the six months ended
with  the  previous  quarter  is less  than  125% of TGC's  obligation  for such
dividend payment and for all other dividends and interest due and payable on all
other  outstanding  securities  of TGC as of such  time.  Holders  of  Series  D
Preferred  Stock will be  entitled  to one vote per share of Series D  Preferred
Stock held by them. The Series D Preferred Stock will vote with the Common Stock
upon all matters other than those which, by law, the holders of shares of Series
D Preferred Stock have the right to vote as a separate class.

     Each share of both the Senior  Preferred  Stock and the Series D  Preferred
Stock  issued to WEDGE  upon  conversion  of the  Debenture  shall be  initially
convertible into one share of Common Stock,  subject to adjustment as more fully
described  in the  Debenture  Agreement.  WEDGE  has the right to  convert  such
preferred  stock into Common Stock at any time.  Notwithstanding  the foregoing,
TGC may, at any time after December 1, 2001,  redeem any or all shares of Senior
Preferred Stock or Series D Preferred Stock outstanding at an initial redemption
price of $1.75 per share, subject to adjustment. Certain additional terms of the
WEDGE  financing  are set forth below under the  heading  "Certain  Terms of the
WEDGE Financing."

     The Company's  Board of Directors  recommends that you vote FOR the consent
to the Senior  Convertible  Preferred  Stock. As stated above, if the consent is
obtained,  WEDGE will automatically  convert the Debenture into Senior Preferred
Stock,  which action will convert  $2,500,000 of debt into equity and materially
improve the capital position of the Company.







                          SECURITY OWNERSHIP OF CERTAIN
                         BENEFICIAL OWNERS AND MANAGEMENT



     The  following  tabulation  sets forth the names of those  persons  who are
known to Management to be the beneficial  owner(s) as of March 15, 2000, of more
than five percent (5%) of the Company's  Common Stock or Preferred  Stock.  Such
tabulation also sets forth the number of shares of the Company's Common Stock or
Preferred Stock beneficially owned as of March 15, 2000, by all of the Company's
directors and executive  officers  (naming them), and all directors and officers
of  the  Company  as a  group  (without  naming  them).  Persons  having  direct
beneficial  ownership of the Company's  Common Stock or Preferred  Stock possess
the sole voting and  dispositive  power in regard to such  stock.  The $5.00 per
share Preferred Stock is freely  convertible  into shares of Common Stock at the
conversion  price per share of Common Stock of $2.00 if  converted  prior to the
close of business on December 31,  2001,  at the  conversion  price per share of
Common Stock of $3.75 if converted  after  December 31, 2001, but prior to close
of business on  December  31,  2002,  and at the  conversion  price per share of
Common Stock at $6.00  thereafter.  Ownership of Preferred Stock is deemed to be
beneficial  ownership of Common Stock at the conversion price per share of $2.00
under Rule 13d-3(d)(1) promulgated under the Securities Exchange Act of 1934. As
of March 15, 2000,  there were  2,267,124  shares of Common Stock and  1,110,250
shares of Preferred Stock outstanding.


     The following  tabulation also includes Common Stock covered by (i) options
granted under the Company's 1986 and 1993 Stock Option Plans,  which options are
collectively  referred to as "Stock Options," and (ii) stock purchase  warrants,
which warrants are  collectively  referred to as "Stock Purchase  Warrants." The
Stock Options and Stock Purchase Warrants have no voting or dividend rights.

<TABLE>


Name & Address         Title of Class    Amount & Nature     Approximate
of Beneficial Owner                       of Beneficial        % of


                                            Ownership         Class(1)

<S>                                        <C>     <C>           <C>
Allen T. McInnes           Common          749,974 (2)(3)        27.97%
Tetra Technologies         Preferred        63,162                5.68%
25025 Interstate 45 North
The Woodlands, TX 77380

Wayne A. Whitener          Common          106,150 (2) (3)        4.49%
TGC Industries, Inc.       Preferred         3,000                    *
1304 Summit Ave., Ste 2
Plano, Texas 75074

Herbert M. Gardner         Common          545,343 (2)(3)(4)     20.75%
26 Broadway, Suite 829     Preferred        49,500       (4)      4.46%
New York, New York 10004

William J. Barrett         Common          730,869 (2)(3)(5)     26.94%
26 Broadway, Suite 829     Preferred        82,500       (5)      7.43%
New York, New York 10004

Edward L. Flynn            Common          819,636 (2) (3)       29.06%
75-11 Myrtle Avenue        Preferred       141,331               12.73%
Glendale, New York 11385

David P. Williams           Common          12,889    (3)             *
TGC Industries, Inc.
1304 Summit Ave, Suite 2
Plano, TX 75074

Kenneth W. Uselton          Common          12,892    (3)             *
TGC Industries, Inc.
1304 Summit, Ste 2
Plano, Texas 75074

Gerlach & Co.               Common         200,000    (2)         8.11%
111 Wall Street, 8th Fl.    Preferred       80,000                7.21%
New York, NY


Special Situations Cayman   Common Stock   125,000    (2)         5.23%
Fund L.P.                   Preferred       50,000                4.50%

Special Situation Fund      Common         375,000    (2)        14.19%
III, L.P.                   Preferred      150,000               13.51%

WEDGE Energy Services,      Common       2,173,913    (6)        48.95%
L.L.C.

All directors and           Common       2,977,753               71.61%
officers as a group                           (2)(3)(4)(5)
of seven (7) persons)       Preferred      339,493               30.58%

* Less than 1%
</TABLE>


     (1) The  percentage  calculations  have been made in  accordance  with Rule
13d-3(d)(1)  promulgated  under the  Securities  Exchange Act of 1934. In making
these  calculations,  shares of Common Stock beneficially owned by a person as a
result of the ownership of Preferred Stock and certain options and warrants were
deemed to be  currently  outstanding  solely with respect to the holders of such
Preferred Stock, options, and warrants.

     (2)  Includes  the number of shares of Common  Stock which are deemed to be
beneficially  owned as a result of ownership of shares of Preferred Stock, which
Preferred shares ($5.00 per share) are freely  convertible into shares of Common
Stock at the  conversion  price  per  share  of  Common  Stock of $2.00  through
December 31, 2001.

     (3) Includes  the number of shares of Common  Stock set forth  opposite the
person's name in the following table,  which shares are beneficially  owned as a
result of the ownership of Stock Options and Stock Purchase Warrants.

<TABLE>

                                        Stock Options            Warrants

<S>                                           <C>                 <C>
William J. Barrett                           -0-                  239,784*
Edward L. Flynn                              -0-                  201,000
Herbert M. Gardner                           -0-                  237,284
Allen T. McInnes                             -0-                  256,225
Kenneth W. Uselton                          7,667                   -0-
David P. Williams                          12,889                   -0-
Wayne A. Whitener                          38,333                  50,000
                                           ------                 -------
All directors and officers as a group      58,889                 984,293
     (7 persons)
</TABLE>

     -----------------------  *Includes  2,500 Warrants  owned by Mr.  Barrett's
wife. Mr. Barrett disclaims beneficial ownership of such Warrants.

     (4) Includes  29,050  shares of Common Stock owned by Herbert M.  Gardner's
wife and also  includes  5,000  of  Common  Stock  shares  purchasable  upon the
conversion of 2,000 shares of Preferred  Stock owned by Mr.  Gardner's wife. Mr.
Gardner has disclaimed beneficial ownership of these shares.

     (5) Includes  23,925  shares of Common Stock owned by William J.  Barrett's
wife and also  includes  25,000  shares of  Common  Stock  purchasable  upon the
conversion of 10,000 shares of Preferred Stock owned by Mr.  Barrett's wife. Mr.
Barrett has disclaimed beneficial ownership of these shares.

     (6)  Includes  the number of shares of Common  Stock which are deemed to be
beneficially  owned as a result of ownership of a $2,500,000 8 1/2%  Convertible
Subordinated Debenture,  which may be converted into either a preferred stock or
Common Stock at a price of $1.15 per share. If converted into a preferred stock,
each  share of such  preferred  stock is  convertible  into one  share of Common
Stock.


     Depositories  such as The  Depository  Trust Company (Cede & Company) as of
March 15,  2000  held,  in the  aggregate,  more than five  percent  (5%) of the
Company's then outstanding Common Stock voting shares.  The Company  understands
that such depositories hold such shares for the benefit of various participating
brokers,  banks, and other  institutions  which are entitled to vote such shares
according to the instructions of the beneficial owners thereof.  The Company has
no reason to  believe  that any of such  beneficial  owners  hold more than five
percent (5%) of the Company's outstanding voting securities.




             COMMITTEES AND MEETINGS OF THE BOARD OF DIRECTORS

     The Board of  Directors  has an  Executive  Committee  comprised of Messrs.
McInnes,  Barrett and Gardner, an Audit Committee comprised of Messrs.  McInnes,
Barrett and Gardner, and a Stock Option Committee comprised of Messrs.  McInnes,
Barrett and Gardner.

     The  Executive  Committee  is  charged  by the  Company's  bylaws  with the
responsibility  of  exercising  such  authority  of the Board of Directors as is
specifically  delegated  to it by the  Board,  subject  to  certain  limitations
contained in the bylaws.

     The Audit  Committee  which was formed in  December,  1997,  conducted  one
meeting  in 1999.  The  purpose  and  functions  of the Audit  Committee  are to
recommend the appointment of independent auditors; review the scope of the audit
proposed by the independent auditors; review year-end financial statements prior
to  issuance;  consult  with the  independent  auditors  on matters  relating to
internal  financial  controls and procedures;  and make appropriate  reports and
recommendations  to the  Board of  Directors.  Prior to  formation  of the Audit
Committee, these duties were performed by the Executive Committee.

     The Stock  Option  Committee  met once during the year.  The  Committee  is
responsible  for awarding  Stock  Options to key  employees or  individuals  who
provide  substantial advice or other assistance to the Company so that they will
apply their best efforts for the benefit of the Company.

     The Board of Directors does not have nominating or compensation committees.

     During the fiscal year ended December 31, 1999, the Board of Directors held
seven (7)  special  meetings in  addition  to its  regular  meeting.  All of the
Directors  listed herein attended 75% or more of the total meetings of the Board
and of the committees on which they serve.




                            EXECUTIVE COMPENSATION

     The table below sets forth on an accrual basis all cash and cash equivalent
remuneration paid by the Company during the year ended December 31, 1999, to the
Chief Executive Officer and any other executives whose salary and bonus exceeded
$100,000.

                          Summary Compensation Table

                              Annual Compensation
<TABLE>
<CAPTION>

Name and Principal                                         Options/  All Other
Position                  Year  Salary   Bonus     Stock   SAR's  Compensation

<S>                     <C>  <C>      <C>          <C>    <C>  <C>      <C>
Wayne A. Whitener       1999 $ 94,875 $25,000     -0-    -0-   $ 7,419  (1)
President               1998 $ 98,524 $55,000     -0-    -0-   $ 9,363  (2)
& CEO                   1997 $ 94,527 $20,000     -0-    -0-   $ 8,209  (3)

R.J. Campbell           1999    -0-     -0-       -0-    -0-      -0-
Vice-Chairman           1998 $130,014 $30,000     -0-    -0-   $10,664  (4)
                        1997 $ 97,083 $10,000     -0-    -0-   $10,513  (5)
</TABLE>


     (1)     Represents  personal  use of Company  vehicle  ($5,216),  Company's
             payment  for  personal  income tax  preparation  ($125),  Company's
             contribution to 401-K program ($1,898), and life insurance premiums
             ($180) in 1999.

     (2)     Represents  personal  use of Company  vehicle  ($4,225),  Company's
             payment  for  personal  income tax  preparation  ($110),  Company's
             contribution to 401-K program ($4,680), and life insurance premiums
             ($348) in 1998.

     (3)     Represents  personal  use of Company  vehicle  ($3,242),  Company's
             payment  for  personal  income tax  preparation  ($113),  Company's
             contribution to 401-K program ($4,506), and life insurance premiums
             ($348) in 1997.

     (4)     Mr. Campbell  resigned as Vice-Chairman of the Board and CEO of the
             Company on December  31, 1998.  Represents  personal use of Company
             vehicle  ($3,669),   Company's  payment  for  personal  income  tax
             preparation ($950), Company's contribution to 401-K program

            ($4,848), and life insurance premiums ($1,197) in 1998.

     (5)     Represents  personal  use of Company  vehicle  ($3,748),  Company's
             payment  for  personal  income tax  preparation  ($900),  Company's
             contribution to 401-K program ($4,668), and life insurance premiums
             ($1,197) in 1997.

     The  Company  maintains  Club  memberships  for  certain  of its  executive
officers.  Although  these  memberships  may be utilized from  time-to-time  for
non-business  purposes, the costs attributable to non-business purposes were not
material.  The Company  believes  that the  aggregate  amounts of such  personal
benefits do not exceed 10% of cash  compensation  paid to any  individual in the
table or,  with  respect  to the  group of all  executive  officers,  10% of the
aggregate cash compensation paid to the members of such group.



                               401(k) Plan


     In 1987, the Company implemented a 401(k) salary deferral plan (the "Plan")
which  covers all  employees  who have  reached the age of 20-1/2 years and have
been  employed by the Company for at least one year.  The covered  employees may
elect to have an amount deducted from their wages for investment in a retirement
plan. The Company has the option,  at its discretion,  to make  contributions to
the Plan. Effective January 1, 1990, the Company determined in its discretion to
make  a  matching  contribution  to the  Plan  equal  to  10% of the  employees'
contributions up to 6% of those employees' compensation. On July 24, 1991, to be
effective  August  5,  1991,  the Board of  Directors  increased  the  Company's
matching  contribution  to the Plan to fifty  cents  ($.50) for every one dollar
($1.00) of  compensation  a participant  defers under the Plan up to 6% of those
employees'  compensation.  Beginning  January  4, 1993,  the Board of  Directors
discontinued  the  matching  contribution  to the  Plan.  Concurrently  with the
acquisition of the Company's former subsidiary, Chase Packaging Corporation, the
Board of Directors reinstated  contributions to the 401(k) salary deferral plan.
The Company made a matching  contribution to the Plan equal to the sum of 75% of
each Participant's Salary reduction contributions to the Plan for such Plan year
which are not in excess of 3% of the  Participant's  compensation  for such Plan
year, and 50% of each Participant's  salary reduction  contributions to the Plan
for such Plan Year which are in excess of 3% of the  Participant's  compensation
but not in excess of 8% of the Participant's compensation for such Plan Year. As
of January 1, 1999, the Company  determined to make a  contribution  to the Plan
equal to 100% of each participant's  salary reduction  contributions to the Plan
up to 2% of the  participant's  compensation.  The total amount of the Company's
contribution  during  1999  for the one (1)  executive  officer  of the  Company
participating in the 401(k) Plan was as follows: Wayne A. Whitener - $1,898.


                       Options Granted in Last Fiscal Year


     During the year ended  December  31,  1999,  Mr.  Whitener,  the  Company's
President and COO, was granted options to purchase 21,100 shares of Common Stock
at an exercise price of $0.75 per share,  expiring  October 21, 2004. There were
no stock  appreciation  rights  granted  in the last  fiscal  year to any of the
executive officers of the Company.







               Aggregate Options/SAR Exercises in Last Fiscal Year
                    and Fiscal Year-End Options/SAR Values


     The following table sets forth certain  information  regarding the year-end
value of Options held by the Company's executive officers during the fiscal year
ended December 31, 1999. There are no stock appreciation rights outstanding.


<TABLE>
                          Aggregated Options Exercised
                            and FY-End Options Values

                                                                Value of
                                           Number of            Unexercised
                                           Unexercised          In-the-Money
                                           Options at           Options at
                                           FY-End (#)           FY-End (2)

Name and         Shares
Principal      Acquired on     Value       Exercisable/         Exercisable/
Position       Exercise (1)  Realized($)   Unexercisable        Unexercisable


<S>                  <C>          <C>         <C>                <C> <C>
Wayne A. Whitener   -0-          -0-          38,333/            $  -0-/
President & CEO                               59,433             $ 5,275


     (1)     The  exercise  price and tax  withholding  obligations  related  to
             exercise may be paid by delivery of already owned  shares,  subject
             to certain conditions.

     (2)     The value of outstanding  options is based on the December  31,1999
             closing stock price which was $1.00.

</TABLE>


<PAGE>




                         TRANSACTIONS WITH MANAGEMENT


     During 1999, the Company issued subordinated promissory notes payable in an
aggregate  principal  amount of $312,500 to certain  officers and  directors for
debt  financing  provided to the Company and, in  connection  therewith,  issued
stock  purchase  warrants to such persons.  The warrants cover 850,000 shares of
Common Stock,  are  exercisable at $.30 per share,  and expire on July 31, 2009.
The subordinated  promissory  notes,  which bore interest at 8% per annum,  were
paid in full  during  December  1999.  The notes  and  warrants  were  issued as
follows:  Allen T. McInnes - $75,000 note and warrant for 200,000 shares;  Wayne
A. Whitener - $12,500 note and warrant for 50,000  shares;  William J. Barrett -
$75,000 note and warrant for 200,000  shares;  Herbert M. Gardner - $75,000 note
and warrant for 200,000  shares;  and Edward L. Flynn - $75,000 note and warrant
for 200,000 shares.


                             STOCK OPTION PLANS

              1986 Incentive and Nonqualified Stock Option Plan

     In 1986 the Company  adopted the 1986  Incentive and  Non-Qualifying  Stock
Option Plan (the "1986 Plan"). The term of the 1986 Plan was for a period of ten
years with the result that the 1986 Plan terminated on July 24, 1996.

     The provisions which were contained in the 1986 Plan were comparable to the
provisions contained in the 1993 Plan (hereafter  described) which succeeded the
1986 Plan.

     Options  granted  under the 1986 Plan  cover  6,333  shares  (adjusted  for
one-for-three  reverse  stock  split)  which are  currently  outstanding.  Stock
options  outstanding  as of the  date of  termination  of the 1986  Plan  remain
outstanding until they are exercised, terminated, or expire.

                            1993 Stock Option Plan

     On June 3, 1993, the Company's Board of Directors  approved and adopted the
Company's 1993 Stock Option Plan (the "1993 Plan").  At the 1994 Annual Meeting,
the Company's  shareholders  approved the 1993 Stock Option Plan.  The following
paragraphs  summarize  certain  provisions of the 1993 Stock Option Plan and are
qualified in their entirety by reference thereto.

     The 1993 Plan  provides  for the  granting  of options  (collectively,  the
"Options")  to  purchase  shares of the  Company's  Common  Stock to certain key
employees of the Company (and/or any of its affiliates), and certain individuals
who  are  not  employees  of the  Company  but  who  from  time-to-time  provide
substantial advice or other assistance or services to the Company (and/or any of
its  affiliates).  The 1993 Stock Option Plan authorizes the granting of options
(both  statutory and  non-statutory)  to acquire up to 283,333  shares of Common
Stock (adjusted for the one-for-three  reverse stock split effective November 6,
1998), subject to certain adjustments  described below, to be outstanding at any
time.  Subject to the  foregoing,  there is no limit on the  absolute  number of
awards  that may be  granted  during  the life of the 1993  Stock  Option  Plan.
Currently,  there are approximately 108 employees of the Company, including four
officers of the Company (two of whom are also  directors),  who, in management's
opinion, are considered eligible to receive grants under the 1993 Plan, although
fewer employees may actually receive grants.

     Authority  to  administer  the 1993 Plan has been  delegated to a committee
(the "Committee") of the Board of Directors. Except as expressly provided by the
1993 Stock Option Plan, the Committee has the authority,  in its discretion,  to
award  Options  and to  determine  the terms and  conditions  (which need not be
identical) of such Options,  including the person to whom, and the time or times
at which,  Options will be awarded,  the number of Options to be awarded to each
such person,  the exercise price of any such Options,  and the form,  terms, and
provisions of any agreement pursuant to which such Options are awarded. The 1993
Plan  also  provides  that  the  Committee  may be  authorized  by the  Board of
Directors  to make cash awards as  specified  by the Board of  Directors  to the
holder of an Option in connection with the exercise thereof.

     Subject to the  limitations  set forth  below,  the  exercise  price of the
shares of stock  covered by each 1993 Option will be determined by the Committee
on the date of award.

     Unless a  holder's  option  agreement  provides  otherwise,  the  following
provisions will apply to exercise by the holder of his or her option:  No option
may be exercised  during the first twelve  months  following  grant.  During the
second year following the date of grant, options covering up to one-third of the
shares covered thereby may be exercised, and during the third year following the
date  of  grant,  options  covering  up to  two-thirds  of  such  shares  may be
exercised.  Thereafter,  and until the options expire, the optionee may exercise
options covering all of the shares. Persons over sixty-five on the date of grant
may exercise options covering up to one-half of the shares during the first year
and thereafter may exercise all optioned shares. Subject to the limitations just
described,  options may be exercised as to all or any part of the shares covered
thereby on one or more  occasions,  but, as a general  rule,  options  cannot be
exercised as to less than one-hundred shares at any one time.

     The exercise price of the shares of stock covered by each  incentive  stock
option ("ISO"),  within the meaning of Sec. 422 of the Internal  Revenue Code of
1986,  as amended (the  "Code"),  will not be less than the fair market value of
stock on the date of award of such ISO except  that an ISO may not be awarded to
any person who owns stock  possessing  more than ten percent  (10%) of the total
combined voting power of all classes of stock of the Company unless the exercise
price is at least one hundred ten percent (110%) of the fair market value of the
stock at the time the ISO is awarded  and the ISO is not  exercisable  after the
expiration of five years from the date it is awarded.  The exercise price of the
shares of Common  Stock  covered by each  Option  that is not an ISO will not be
less than fifty  percent (50%) of the fair market value of the stock on the date
of award.

     Payment for Common  Stock issued upon the exercise of an Option may be made
in cash or with the consent of the  Committee,  in whole  shares of Common Stock
owned by the holder of the  Option for at least six months  prior to the date of
exercise  or,  with the consent of the  Committee,  partly in cash and partly in
such  shares of Common  Stock.  If  payment is made,  in whole or in part,  with
previously-owned  shares of Common Stock, the Committee may issue to such holder
a new Option for a number of shares  equal to the number of shares  delivered by
such holder to pay the exercise price of the previous  Option having an exercise
price equal to at least one-hundred  percent (100%) of the fair market value per
share of the Common Stock on the date of the exercise of the previous Option.

     The  duration  of each  Option  will be for such  period  as the  Committee
determines  at the time of award,  but not for more than ten years from the date
of award in the case of an ISO.

     In the event of any change in the number of shares of Common Stock effected
without  receipt of  consideration  therefor by the Company by reason of a stock
dividend, or split,  combination,  exchange of shares or other recapitalization,
merger,  or otherwise,  in which the Company is the surviving  Corporation,  the
aggregate  number and class of reserved  shares,  the number and class of shares
subject to each outstanding  Option,  and the exercise price of each outstanding
Option will be  automatically  adjusted  to reflect  the effect  thereon of such
change. Unless a holder's option agreement provides otherwise,  a dissolution or
liquidation  of the Company,  certain sales of all or  substantially  all of the
assets of the Company, certain mergers or consolidations in which the Company is
not  the  surviving  corporation,  or  certain  transactions  in  which  another
corporation  becomes  the  owner of  fifty  percent  (50%) or more of the  total
combined  voting power of all classes of stock of the  Company,  will cause such
holder's Options then outstanding to terminate, but such holder may, immediately
prior to such  transaction,  exercise such options  without regard to the period
and installments of exerciseability  applicable pursuant to such holder's option
agreement.

     The 1993 Plan will  terminate on June 3, 2003,  or such earlier date as the
Board  of  Directors  may  determine.   Any  stock  option  outstanding  at  the
termination  date  will  remain   outstanding   until  it  has  been  exercised,
terminated, or has expired.

     The 1993  Plan may be  terminated,  modified,  or  amended  by the Board of
Directors  at  any  time  without  further  shareholder  approval,  except  that
shareholder approval is required for any amendment which: (a) changes the number
of shares of Common  Stock  subject to the 1993 Stock  Option Plan other than by
adjustment provisions provided therein, (b) changes the designation of the class
of employees eligible to receive Options, (c) decreases the price at which ISO's
may be granted,  (d) removes the  administration  of the 1993 Stock  Option Plan
from the Committee,  or (e) without the consent of the affected  holder,  causes
the ISO's granted under the 1993 Stock Option Plan and  outstanding at such time
that  satisfied  the  requirements  of Sec. 422 of the Code no longer to satisfy
such requirements.

     Granted stock  options  under the 1993 Stock Option Plan  covering  170,155
shares (adjusted for  one-for-three  reverse split) were outstanding at December
31,  1999.  117,100  incentive  stock  options are  outstanding  to officers and
employees of the Company, and 53,055 non-statutory stock options are outstanding
to officers and employees of the Company's  former  subsidiary,  Chase Packaging
Corporation.  During 1999, 37,100 stock options were granted under the Company's
1993 Stock Option Plan to officers and employees of the Company.  Effective July
31, 1996, the Company's  wholly owned  subsidiary,  Chase Packaging  Corporation
("Chase"),  was  spun-off  to  the  Company's  shareholders.  In  view  of  this
situation,  and in order to provide the  employees of both Chase and the Company
with the  maximum  period  available  under  the tax laws for  exercising  their
options after a termination of  employment,  the 1993 Plan was amended to extend
from thirty days to three months,  the period of time  following  termination of
employment,  during  which the  terminating  employee  can  exercise  his or her
incentive  stock option.  The 53,055  options not so exercised were converted to
non-statutory options.

     The purpose of the 1993 Plan is to provide an incentive  for key  employees
of the  Company to remain in the  service of the Company and to apply their best
efforts for the benefit of the Company so as to improve the Company's  financial
performance.

                            1999 Stock Option Plan

     The 1999 Stock Option Plan, which was approved and adopted by the Company's
Board of Directors on December 14, 1999,  subject to  shareholder  approval,  is
summarized  under "Action to be Taken and Vote Required - Approval of 1999 Stock
Option Plan" above.



<PAGE>




                    CERTAIN TERMS OF THE WEDGE FINANCING

     Under the terms of the Debenture and the Debenture Agreement,  TGC promises
to pay to WEDGE the principal amount of $2,500,000 and interest on the principal
amount at the rate of 8-1/2% per year from  December 10, 1999 until  December 1,
2009, the date of maturity of the Debenture. Such principal amount is payable in
cash at  maturity.  Such  interest is payable in cash  semi-annually;  provided,
however,  that each interest  payment due and payable  through  January 1, 2001,
shall  be paid in  kind by the  issuance  of  additional  debentures,  like  the
Debenture,  with a  principal  amount  equal to the amount of the cash  interest
payment which  otherwise  would have been paid ("PIK  Interest").  WEDGE has the
option with respect to each  interest  payment due and payable  after January 1,
2001, to elect  whether such interest  payment shall be by cash or PIK Interest.
Notwithstanding  the  foregoing,  TGC will only pay PIK Interest if its earnings
before deduction of interest,  taxes,  depreciation and amortization  ("EBITDA")
for the six  months  ended  the  previous  quarter  are less  than 125% of TGC's
obligation  for such interest  payment and for all other  dividends and interest
due and  payable  on all other  outstanding  securities  of TGC as of such time.
Interest  payments on the  Debenture  take  priority  over any  preferred  stock
dividends  payable by TGC. The  indebtedness  evidenced by the Debenture will be
subordinate in right of payment to all Superior  Indebtedness (as defined in the
Debenture  Agreement)  to  the  extent  and in the  manner  provided  for in the
Debenture Agreement.

     In accordance  with the terms of the Debenture  Purchase  Agreement and the
Debenture  Agreement,  so long as (a) the Debenture  remains  outstanding or (b)
WEDGE owns shares of preferred stock  representing at least 10% of the shares of
capital  stock of TGC on a fully  diluted  basis,  TGC will not (i) pay any cash
dividends or any interest accrual on any equity or debt security,  excluding any
Superior  Indebtedness  (as  defined in the  Debenture  Agreement),  until TGC's
EBITDA for the six months ended with the quarter for the last  quarterly  report
are more than 125% of TGC's  obligations  for all dividends and interest due and
payable on all  outstanding  securities of TGC as of such time or (ii) incur, or
commit to  incur,  any  capital  expenditures  of any kind in excess of  $50,000
without the approval of TGC's Board of  Directors,  and TGC agrees that until it
has expended the $2,500,000 in proceeds from the issuance of the  Debenture,  it
will not make any capital  expenditures in excess of $50,000 without the consent
of WEDGE. So long as WEDGE or its nominee holds the Debenture,  TGC will furnish
to such holder  certain  financial  and business  information  of TGC  including
quarterly statements, annual statements, audit reports, and certain filings with
the Securities Exchange Commission.

     Pursuant to the Debenture Purchase  Agreement and the Debenture  Agreement,
TGC may, at any time after December 1, 2001, prepay the Debenture, including any
debentures  issued as PIK Interest,  in whole or in part, by payment of 152.174%
of the outstanding  principal amount of the Debenture,  or portion thereof to be
prepaid,  and payment of the accrued interest thereon to the date of prepayment.
In the  event of a merger  by TGC or a sale of all or  substantially  all of its
assets,  WEDGE may elect to have TGC prepay all of such  Debenture by payment of
100% of the  principal  amount  of the  Debenture  and  payment  of the  accrued
interest thereon to the date of prepayment.

     In connection with the issuance of the Debenture, WEDGE was granted a right
to participate in any additional equity offerings which TGC may offer, up to the
WEDGE Percentage (as defined in the Debenture Purchase Agreement). This right of
participation expires upon the later to occur of the following: (a) the maturity
of the Debenture, (b) the conversion of the Debenture into Common Stock, (c) the
conversion of the Debenture  into Senior  Preferred  Stock or Series D Preferred
Stock (both as defined above) and the  conversion of such  preferred  stock into
Common Stock, or (d) December 10, 2009.

     Under the  terms of the  Debenture  Purchase  Agreement  and the  Debenture
Agreement,  upon the  request of WEDGE  covering  at least 51% in the  aggregate
principal  amount of the  Debenture  and/or 51% of the  shares of Common  Stock,
Senior  Preferred  Stock and/or Series D Preferred  Stock (the "Shares")  issued
upon  conversion of the  Debenture,  TGC will use its best efforts to effect the
registration  under the  Securities Act of 1933, as amended (the "1933 Act") of:
(a) the  Shares  which  TGC has been  requested  to  register  and (b) all other
outstanding  Shares,  or Shares issuable upon  conversion of the Debenture,  the
holders  of which have made  written  request  to TGC for  registration  thereof
within  30 days  after  the  receipt  of such  written  notice  from  TGC.  Such
registration  shall be in effect for a period of 24 months;  provided,  however,
that TGC will not be required to register or use its best  efforts to effect any
registration  of this  type of  Shares  under  the  1933  Act  more  than  once.
Notwithstanding the foregoing, if TGC proposes to register any of its securities
under the 1933 Act, TGC will notify WEDGE of such  intention and upon request by
WEDGE,  TGC will use its best efforts to cause all such outstanding  Shares,  or
Shares issuable upon conversion of the Debenture, requested for registration, to
be so  registered  under the 1933 Act,  such Shares  subject to reduction in the
event that the managing  underwriter of a then proposed public offering of TGC's
securities determines that such registration of such Shares would materially and
adversely affect such public offering. All expenses relating to TGC's compliance
with the  registration  rights  of WEDGE,  excluding  certain  expenses  such as
underwriting  commissions and discounts,  the fees of WEDGE's  counsel,  and any
filing fees  associated  with the listing of shares of either  Senior  Preferred
Stock or Series D Preferred  Stock (but not Common Stock),  will be paid by TGC.
The  Debenture  Purchase  Agreement  and the  Debenture  Agreement  also contain
customary  indemnification  provisions with respect to the  registration  rights
contained therein.


                            RECOMMENDATION AND VOTE


     It is the opinion of the Board of  Directors  that the (1)  election of the
seven (7) members of the Board of Directors,  (2) approval of the Company's 1999
Stock Option Plan,  (3)  ratification  of the selection of Grant Thornton LLP as
independent  auditors,  and  (4)  consent,  by  the  holders  of  the  Company's
outstanding  shares of  Preferred  Stock  voting as a class,  to a new series of
Senior  Convertible  Preferred Stock, are advisable and in the best interests of
the Company.  As a result, the Board of Directors  recommends a vote FOR each of
these items. The affirmative vote of the holders of a majority of the issued and
outstanding shares of Common Stock and Preferred Stock present,  in person or by
proxy,  at the annual meeting,  is required for the  shareholders to approve the
election of the seven (7) new members to the Board of Directors,  to approve the
1999 Stock Option  Plan,  and to ratify the  selection of Grant  Thornton LLP as
independent auditors. The affirmative vote of the holders of two-thirds (2/3) of
the issued and  outstanding  shares of Preferred Stock entitled to vote thereon,
voting  as a  class,  is  required  to  consent  to the  new  series  of  Senior
Convertible Preferred Stock.

                         INDEPENDENT PUBLIC ACCOUNTANTS

     The  Board  of  Directors  has  appointed  Grant  Thornton  LLP to serve as
auditors of the Company.  It is expected that a representative of Grant Thornton
LLP will be present at the shareholders'  meeting with the opportunity to make a
statement  if he/she  desires to do so and also will be  available to respond to
appropriate questions at the meeting.


                                 OTHER MATTERS

     The Company's management knows of no other matters that may properly be, or
which are  likely to be,  brought  before  the  meeting.  However,  if any other
matters are  properly  brought  before the  meeting,  the  persons  named in the
enclosed  proxy, or their  substitutes,  will vote in accordance with their best
judgment on such matters.


                              SHAREHOLDER PROPOSALS

     A shareholder  proposal  intended to be presented at the  Company's  annual
meeting of Shareholders in 2001 must be received by the Company at its principal
executive  offices in Plano,  Texas on or before December 1, 2000 in order to be
included in the Company's  proxy  statement  and form of proxy  relating to that
meeting.

                              FINANCIAL STATEMENTS

     Financial  statements  of the Company are contained in the Annual Report to
Shareholders for the fiscal year ended December 31, 1999 enclosed herewith. Such
financial statements are incorporated herein by reference.


                                   By Order of the Board of Directors

                                    /s/ ALLEN T. MCINNES

                                   Allen T. McInnes
                                   Secretary

Plano, Texas
April 7, 2000


161421.1


<PAGE>












                                   EXHIBIT A

                             1999 Stock Option Plan

                                      of

                              TGC Industries, Inc.


<PAGE>



                           1999 Stock Option Plan
                                     of

                            TGC Industries, Inc.

     This TGC Industries,  Inc. 1999 Stock Option Plan (the "Plan") provides for
the granting of:

          (a)  Incentive  Stock  Options  (hereinafter  defined)  to certain key
employees of TGC Industries,  Inc., a Texas corporation ("Company"),  and/or its
Affiliates (hereinafter defined), and

     (b)  Nonstatutory  Stock  Options  (hereinafter  defined)  to  certain  key
employees of Company, and/or its Affiliates,  and to certain individuals who are
not employees of Company or its Affiliates.

     The purpose of the Plan is to provide an  incentive  for key  employees  of
Company  and/or its  Affiliates,  and for  individuals  who are not employees of
Company  and/or its  Affiliates  but who from time to time  provide  substantial
advice or other  assistance  or services to Company  and/or its  Affiliates,  to
remain in the service of Company  and/or its  Affiliates  or continue to provide
such  assistance,  to extend to them the  opportunity  to acquire a  proprietary
interest in Company so that they will apply  their best  efforts for the benefit
of Company,  and to aid Company in attracting  able persons to enter the service
of Company and/or its Affiliates or provide such assistance.

                                     Article I
                                    Definitions

     Sec. 1:1.  Act.  "Act" shall mean the  Securities  Exchange Act of 1934, as
amended.

     Sec. 1:2. Affiliates.  "Affiliates" shall mean: (a) any corporation,  other
than Company,  in an unbroken chain of corporations  ending with Company if each
of the  corporations,  other than Company,  owns stock  possessing fifty percent
(50%) or more of the total combined  voting power of all classes of stock in one
of the other  corporations in such chain;  and (b) any  corporation,  other than
Company, in an unbroken chain of corporations  beginning with Company if each of
the  corporations,  other than the last corporation in the unbroken chain,  owns
stock  possessing fifty percent (50%) or more of the total combined voting power
of all classes of stock in one of the other corporations in such chain.

     Sec. 1:3.  Agreement.  "Agreement" shall mean the written agreement between
Company  and  a  Holder  evidencing  the  Option  granted  by  Company  and  the
understanding of the parties with respect thereto.

     Sec. 1:4. Board of Directors.  "Board of Directors" shall mean the board of
directors of Company.

     Sec.  1:5.  Code.  "Code" shall mean the Internal  Revenue Code of 1986, as
amended.

     Sec. 1:6.  Committee.  "Committee"  shall mean the committee  designated in
Article III hereof by the Board of Directors to administer this Plan.

     Sec. 1:7. Eligible Individuals.  "Eligible Individuals" shall mean: (a) key
employees, including officers and/or directors who are also employees of Company
and/or of any of its  Affiliates;  and (b)  individuals who are not employees of
Company and/or of its  Affiliates but who from time to time provide  substantial
advice or other assistance or services to Company and/or its Affiliates.

     Sec. 1:8.  Fair Market Value.  "Fair Market Value" shall mean, if the Stock
is traded  on one or more  established  markets  or  exchanges,  the mean of the
opening  and closing  prices of the Stock on the  primary  market or exchange on
which the Stock is  traded,  and if the Stock is not so traded or the Stock does
not trade on the relevant date, the value  determined in good faith by the Board
of Directors.  For purposes of valuing Incentive Stock Options,  the Fair Market
Value of stock shall be determined  without regard to any restriction other than
one which, by its terms, will never lapse.

     Sec. 1:9.  Holder.  "Holder"  shall mean an Eligible  Individual to whom an
Option has been granted.

     Sec. 1:10.  Incentive Stock Options.  "Incentive  Stock Options" shall mean
stock options that are intended to satisfy the  requirements  of Sec. 422 of the
Code.

     Sec. 1:11.  Nonstatutory Stock Options.  "Nonstatutory Stock Options" shall
mean stock  options  that are not  intended  to be, or are not  denominated  as,
Incentive Stock Options.

     Sec. 1:12. Options.  "Options" shall mean either Incentive Stock Options or
Nonstatutory Stock Options, or both.

     Sec. 1:13.  Stock.  "Stock" shall mean Company's  authorized $.30 par value
Common Stock.

                                Article II

            Stock and Maximum Number of Shares Subject to the Plan

     Sec. 2:1.  Description  of Stock and Maximum  Shares  Allocated.  The Stock
which  Options  granted  hereunder  give a Holder the right to  purchase  may be
unissued or reacquired  shares of Stock,  as the Board of Directors  may, in its
sole and  absolute  discretion,  from  time to time  determine.  Subject  to the
adjustments  in Sec. 6.6 hereof,  the aggregate  number of shares of Stock to be
issued pursuant to the exercise of all Options granted  hereunder may equal, but
may not exceed, 300,000 shares of Company's Stock.

     Sec.  2:2.   Restoration  of  Shares.  If  an  Option  hereunder   expires,
terminates, or is not exercised for any reason during the term of this Plan, the
shares of Stock which were  subject to such Option  shall be  "restored"  to the
Plan by again being available for Options granted after the shares' restoration,
effective  as  of  the  first  day  of  the  year  following  such   expiration,
termination, or non-exercise.

                                  Article III
                           Administration of the Plan

     Sec.  3:1.  Stock Option  Committee.  This Plan will be  administered  by a
Committee  consisting  of four members to be  appointed  by  Company's  Board of
Directors.  The  members of the Stock  Option  Committee  must be members of the
Company's Board of Directors.

     Sec. 3:2. Duration,  Removal, Etc. The members of the Committee shall serve
at the pleasure of the Board of  Directors,  which shall have the power,  at any
time and from  time to time,  to remove  members  from the  Committee  or to add
members thereto. Vacancies on the Committee,  however caused, shall be filled by
the Board of Directors.

     Sec. 3:3. Meetings and Actions of Committee.  The Committee shall elect one
of its  members as its  Chairman  and shall hold its  meetings at such times and
places as it may determine.  All decisions and  determinations  of the Committee
shall be made by the majority  vote of all of its members  present at a meeting;
provided,  however,  that any decision or  determination  reduced to writing and
signed by all of the members of the Committee  shall be as fully effective as if
it had been made at a meeting duly called and held.  The  Committee may make any
rules and regulations for the conduct of its business that are not  inconsistent
with the provisions hereof and with the Bylaws of Company.

     Sec. 3:4. Committee's Powers. Subject to the express provisions hereof, the
Committee shall have the authority,  in its sole and absolute discretion to: (a)
adopt, amend, and rescind  administrative and interpretive rules and regulations
relating to the Plan;  (b) determine the terms and  provisions of the respective
Agreements  (which  need not be  identical),  including  provisions  defining or
otherwise  relating to: (i) subject to Article VI of the Plan,  the term and the
period or periods and extent of exercisability  of the Options,  (ii) the extent
to which the  transferability of shares of Stock issued upon exercise of Options
is  restricted,   (iii)  the  effect  of  termination  of  employment  upon  the
exercisability of the Options, and (iv) the effect of approved leaves of absence
(consistent with any applicable  regulations of the Internal  Revenue  Service);
(c) accelerate the time of  exercisability  of any Option that has been granted;
(d) construe the  respective  Option  Agreements  and the Plan; and (e) make all
other  determinations  and perform all other acts  necessary  or  advisable  for
administering  the Plan,  including the delegation of such  ministerial acts and
responsibilities  as the Committee deems appropriate.  The Committee may correct
any defect or supply any omission or reconcile any  inconsistency in the Plan or
in any  Agreement  in the manner and to the  extent it shall deem  expedient  to
carry  it into  effect,  and it  shall  be the  sole  and  final  judge  of such
expediency.  The  determination  of the Committee on the matters  referred to in
this Sec. 3.4 shall be final and conclusive.


<PAGE>


                                  Article IV
                         Eligibility and Participation

     Sec. 4:1.  Eligible  Individuals.  Options may be granted hereunder only to
persons  who  are  Eligible  Individuals  at  the  time  of the  grant  thereof.
Notwithstanding any provision contained herein to the contrary, a person may not
receive an Incentive Stock Option  hereunder  unless he or she is an employee of
Company  and/or an  Affiliate,  nor shall a person be  eligible  to  receive  an
Incentive  Stock  Option  hereunder  if he or she,  at the time  such  Option is
granted,  would own (within the meaning of Secs.  422 and 424 of the Code) stock
possessing  more than ten percent  (10%) of the total  combined  voting power or
value of all  classes of stock of Company  or an  Affiliate,  unless at the time
such Incentive  Stock Option is granted the exercise price per share is at least
one hundred ten percent  (110%) of the Fair Market  Value of each share of stock
to which the Incentive  Stock Option  relates and the Incentive  Stock Option is
not  exercisable  after the  expiration  of five (5)  years  from the date it is
granted.

     Sec. 4:2. No Right to Option.  The adoption of the Plan shall not be deemed
to give any person a right to be granted an Option.


                                   Article V

               Grant of Options and Certain Terms of the Agreements

     Sec. 5:1.  Determination  of Eligible  Individuals.  Subject to the express
provisions  hereof,  the Committee shall  determine  which Eligible  Individuals
shall be granted  Options  hereunder  from time to time. In making  grants,  the
Committee shall take into  consideration  the  contribution the potential Holder
has made or may make to the success of Company and/or its Affiliates  along with
such  other  considerations  as the  Board of  Directors  may from  time to time
specify. The Committee shall also determine the number of shares subject to each
of such  Options  and shall  authorize  and cause  Company  to grant  Options in
accordance with such determinations.

     Sec.  5:2.  Date of Grant.  The date on which the  Committee  completes all
action  constituting  an offer of an  Option  to an  individual,  including  the
specification  of the  number of shares of Stock to be  subject  to the  Option,
shall be the date on which the Option  covered by an Agreement is granted,  even
though  certain  terms of the  Agreement  may not be determined at such time and
even though the Agreement may not be executed  until a later time.  For purposes
of the  preceding  sentence,  an offer shall be deemed made if the Committee has
completed  all  such  action  and has  communicated  the  grant  thereof  to the
potential  Holder.  In no event,  however,  may an  Optionee  gain any rights in
addition to those  specified by the  Committee in its grant,  regardless  of the
time that may pass  between the grant of the Option and the actual  execution of
the Agreement by Company and the Optionee.

     Sec. 5:3. Stock Option  Agreement.  Each Option granted  hereunder shall be
evidenced by an  Agreement,  executed by Company and the Eligible  Individual to
whom the Option is  granted,  incorporating  such terms as the  Committee  deems
necessary  or  desirable.  More than one Option may be granted  hereunder to the
same Eligible Individual and be outstanding concurrently hereunder. In the event
an Eligible  Individual is granted both one or more Incentive  Stock Options and
one or more  Nonstatutory  Stock  Options,  such grants  shall be  evidenced  by
separate  Agreements,  one for each of the Incentive Stock Option grants and one
for each of the Nonstatutory Stock Option grants.

     Sec. 5:4.  Forfeiture of Stock.  Each  Agreement may provide for conditions
giving  rise to the  forfeiture  of the  Stock  acquired  pursuant  to an Option
granted hereunder and/or such restrictions on the  transferability  of shares of
Stock acquired  pursuant to an Option granted  hereunder as the Committee in its
sole and absolute  discretion deems proper or advisable.  Such conditions giving
rise to forfeiture may include, but need not be limited to, the requirement that
the Holder render  substantial  services to Company  and/or its Affiliates for a
specified period of time. Such restrictions on transferability may include,  but
need not be limited to, options and rights of first refusal in favor of Company.

     Sec.  5:5. Cash Awards.  In addition,  the Board of Directors may authorize
the Committee to grant cash awards payable in connection with the exercise of an
Option  upon  such  terms  and  conditions  as are  specified  by the  Board  of
Directors;  provided  that no such  cash  award  shall be  effective  unless  it
complies with any applicable  requirements for exemption from liability pursuant
to Rule 16b-3 promulgated under the Act.


                                  Article VI
                        Terms and Conditions of Options

     All Options granted hereunder shall comply with, be deemed to include,  and
shall be subject to, the following terms and conditions:

     Sec. 6:1. Number of Shares. Each Agreement shall state the number of shares
of Stock to which it  relates.  Except  to the  extent  an  Agreement  otherwise
provides, the following limitations shall apply to the exercise of each Option:

     A. First Year.  A Holder may not  exercise any portion of his or her Option
during the first  twelve (12) month period  following  the date of grant of such
Option.

          B. After First Year.  A Holder may  exercise up to (but not more than)
     one-third of the total shares of Stock  subject to his or her Option at any
     time after the first twelve (12) month period following the day of grant of
     such Option.

          C. After  Second Year. A Holder may exercise up to (but not more than)
     two-thirds of the total shares of Stock subject to his or her Option at any
     time after the first  twenty-four  (24) month period  following the date of
     grant of such Option.

          D. After Third Year.  A Holder may exercise all of the shares of Stock
     subject to his or her Option at any time  after the first  thirty-six  (36)
     month period following the date of grant of such Option.

          E. Senior Status.  Notwithstanding  the limitations stated above, if a
     Holder  is  sixty-five  (65)  years  of age or older at the time his or her
     Option is  granted,  such  Holder  may  exercise  up to (but not more than)
     one-half  of the total  shares of Stock  subject to such Option at any time
     during the first  twelve (12) month period  following  the date of grant of
     such Option and  thereafter may exercise all of the shares of Stock subject
     to such Option.

          F. De Minimus  Limitation.  Subject to the  limitations  stated above,
     each  Option  may  be  exercised  at  one  time  or on  several  successive
     occasions; however, each Option may not be exercised in an amount less than
     one hundred  (100) shares at any one time  (unless  such  exercise is being
     made as to the entire  portion of Stock which may be purchased  pursuant to
     this Plan).

     Sec. 6:2. Exercise Price. Each Agreement shall state the exercise price per
share of Stock.  The exercise  price per share of stock  subject to an Incentive
Stock  Option shall not be less than the greater of: (a) the par value per share
of the Stock;  or (b) one hundred  percent  (100%) of the Fair Market  Value per
share of  Company's  Stock on the date of the grant of the Option.  The exercise
price per share of stock  subject to a  Nonstatutory  Stock  Option shall not be
less than fifty percent (50%) of the Fair Market Value per share of the Stock on
the date of the grant of the Option.

     Sec. 6:3. Medium and Time of Payment,  Method of Exercise,  and Withholding
Taxes.

          A.  Exercise  of Option.  Except as  otherwise  permitted  below,  the
     exercise  price of stock  covered by an Option  shall be  payable  upon the
     exercise of the Option in cash, by certified or cashier's  check.  Exercise
     of an Option shall not be  effective  until  Company has  received  written
     notice of exercise.  Such notice must specify the number of whole shares to
     be  purchased  and be  accompanied  by  payment  in full  of the  aggregate
     exercise price of the number of shares purchased.  Company shall not in any
     case be required to sell, issue, or deliver a fractional share with respect
     to any Option.

               1. Stock-for-Stock  Exercise.  With the consent of the Committee,
          the Holder may pay the exercise  price with shares of Stock of Company
          which have been held by the  Holder for at least six (6) months  prior
          to the date of exercise,  or with the consent of the  Committee,  by a
          combination of cash and such shares. Such Stock shall be duly endorsed
          for  transfer  to  Company.  Such Stock shall be deemed to have a fair
          market value on the date of delivery  equal to the aggregate  purchase
          price of the  shares  with  respect  to which  such  Option or portion
          thereof is being exercised.

               2.  Cashless  Exercise/Sale  Method.  With  the  consent  of  the
          Committee,  payment in full of the exercise price of the Option may be
          made  through the  Company's  receipt of a copy of  instructions  to a
          broker directing such broker to sell the Stock for which the Option is
          being  exercised,  to  remit to the  Company  an  amount  equal to the
          aggregate  exercise  price  of such  Option,  with the  balance  being
          remitted to Holder.

               3.  Cashless   Exercise/Net  Method.  With  the  consent  of  the
          Committee,  payment in full of the exercise price of the Option may be
          made,  based on written  instructions  received  from the  Holder,  by
          Company's  issuance  to the  Holder of that  number of shares of Stock
          having a fair market value equal to only the "profit  portion" of his,
          her, or its Option (i.e.,  the excess of the then fair market value of
          the Stock over the Holder's exercise price).

          B. New Options.  In the event that a Holder pays the exercise price of
     his Option,  in whole or in part,  with  previously  owned shares of Stock,
     pursuant to the rules specified above,  then, if and to the extent approved
     by the Committee,  in addition to the shares of Stock purchased pursuant to
     the Option exercise,  such Holder shall also receive a new Option,  subject
     to the terms and conditions set forth below and in the Holder's  individual
     Stock  Option  Agreement.  Upon  exercise of the Option with payment in the
     form of  either  shares  of Stock or a  combination  of cash and  shares of
     Stock,  the Committee may, in its sole and absolute  discretion,  grant the
     Holder a new Option for shares of Stock  equal to the number of shares that
     were  delivered  by the Holder to Company to pay, in whole or in part,  the
     exercise price of the previous Option. The exercise price of the new Option
     shall be equal to at least 100% of the Fair  Market  Value per share of the
     Stock  on the  date  of the  exercise  of the  previous  Option.  Provided,
     however,  the new Option  cannot be exercised by the Holder until the later
     of:  (1)  the  exercisability  dates  specified  in the  individual  Option
     Agreement;  or (2) six (6)  months  after the date of  grant.  As a further
     condition  on the  exercisability  of the new  Option,  the shares of Stock
     received by the Holder upon exercise of his or her previous  Option must be
     held by the Holder  for at least six (6)  months  prior to any sale of such
     shares by the  Holder.  Any sale of such  shares  by a Holder  prior to the
     expiration of the six (6) month holding  period shall render the new Option
     non-exercisable. Nothing in this paragraph shall prevent the Committee from
     granting a Holder  another new Option in the future when the  previous  new
     Option is  exercised  by the Holder  with the payment of  previously  owned
     shares of Stock.

          C.     Withholding.

     1. General.  The Committee may, in its discretion,  require a Holder to pay
to Company at the time of exercise of an Option (or portion  thereof) the amount
that Company  deems  necessary to satisfy its  obligation  to withhold  Federal,
state,  or local income or other taxes incurred by reason of the exercise.  Upon
the exercise of an Option requiring tax withholding, a Holder may make a written
request to have shares of stock withheld by Company from the shares otherwise to
be  received.  The number of shares so  withheld  shall have an  aggregate  Fair
Market  Value on the date of  exercise  sufficient  to  satisfy  the  applicable
withholding  taxes.  The  acceptance of any such request by a Holder shall be at
the sole  discretion of the  Committee,  including,  if deemed  necessary by the
Committee,   approval  by  the  Securities  and  Exchange   Commission  and  the
satisfaction of any additional requirements necessary to obtain such approval.

               2. Additional Sec. 16b Requirements.  Currently,  with respect to
          Option holders subject to liability under Section 16b of the Act, such
          additional  requirements  include the  following:  (1) any  previously
          owned shares of Stock used to satisfy the withholding  obligation must
          have been held by the  taxpayer  for at least six (6) months,  and any
          Option shares otherwise  issuable  hereunder to be withheld to satisfy
          such  obligations  may be so withheld only if both the exercise of the
          Option and the election to have shares  withheld are made at least six
          (6) months after the date of grant;  (2) the Option holder's  election
          must be made:  (a) at least six (6)  months  less one day prior to the
          date on which the option  exercise  becomes  taxable,  or (b) within a
          10-day "window  period"  beginning on the third business day following
          the release of  Company's  annual or quarterly  financial  reports and
          ending on the twelfth day  thereafter  (but in no event later than the
          date the  option  exercise  becomes  taxable);  (3)  Company  has been
          subject to the Act's reporting  requirements  for more than a year and
          has filed all reports and statements  required to be filed pursuant to
          Section 13 of the Act;  (4)  Company  regularly  issues  quarterly  or
          annual  summary  statements of sales and earnings;  (5) all members of
          the Committee  administering  the Plan with respect to Option  holders
          subject to liability under Section 16b of the Act are  "disinterested"
          in  accordance  with Rule  16b-3  promulgated  under the Act;  (6) the
          Committee  will be  empowered  to consent to or  disapprove  an Option
          holder's withholding  election;  and (7) any withholding election will
          be required to be irrevocable.

     Sec. 6:4.     Terms, Time of Exercise, and Transferability of Options.

          A.  Decrease  in Term of Option.  In  addition to such other terms and
     conditions as may be included in a particular Agreement granting an Option,
     an Option shall be  exercisable  during a Holder's  lifetime only by him or
     her or by his or her guardian or legal representative.  An Option shall not
     be   transferrable   other  than  by  will  or  the  laws  of  descent  and
     distribution.  Each Option shall also be subject to the following terms and
     conditions (except to the extent a Holder's Agreement otherwise provides):

          1.    Termination of Employment or Directorship.

                a. Voluntary  Termination.  If a Holder ceases to be employed by
at least one of the  employers in the group of employers  consisting  of Company
and  its  Affiliates  because  the  Holder  voluntarily  terminates  his  or her
employment  with such  group of  employers  and the  Holder  does not  remain or
thereupon become a director of Company or one or more of its Affiliates, or if a
Holder ceases to be a director of at least one of the  corporations in the group
of corporations consisting of Company and its Affiliates and the Holder does not
remain  or  thereupon  become  an  employee  of  Company  or one or  more of its
Affiliates,  the  portion  (if  any)  of an  Option  that  remains  unexercised,
including  that  portion  (if any) that  pursuant  to the  Agreement  is not yet
exercisable, as of the date of the Holder's termination of employment or ceasing
to be a  director,  whichever  occurs  later,  shall  terminate  and cease to be
exercisable  as of such date (or ninety  [90] days  prior  thereto if the Holder
elected to exercise his or her Option in anticipation of such termination [to be
determined in the sole discretion of the Committee]).

                b.  Termination  for Cause. If a Holder ceases to be employed by
at least one of the  employers in the group of employers  consisting  of Company
and  its  Affiliate  because  any  of  such  entities  terminates  the  Holder's
employment  for  cause,   the  portion  (if  any)  of  an  Option  that  remains
unexercised,  including  that portion (if any) that pursuant to the Agreement is
not yet  exercisable,  at the time of the Holder's  termination  of  employment,
shall terminate and cease to be exercisable  immediately  upon such  termination
(or ninety [90] days prior thereto if the Holder  elected to exercise his or her
Option  in  anticipation  of such  termination  [to be  determined  in the  sole
discretion of the Committee]).  A Holder's employment shall be deemed terminated
"for cause" if  terminated by the Board of Directors of Company (or the board of
directors of an Affiliate) because of incompetence, insubordination, dishonesty,
other acts detrimental to the interest of Company and/or its Affiliates,  or any
material breach by the Holder of any employment, nondisclosure,  noncompetition,
or other contract with Company  and/or one of its  Affiliates.  Whether  "cause"
exists shall be determined by such Board of Directors in its sole discretion and
in good faith.  The exercise of an option in  anticipation  of a termination for
cause shall be null and void.

     c. Termination Without Cause. If a Holder ceases to be employed by at least
one of the  employers  in the group of employers  consisting  of Company and its
Affiliates because one or more of such entities terminates the employment of the
Holder  for  otherwise  than for  "cause,"  and the  Holder  does not  remain or
thereupon become a director of Company and/or one or more of its Affiliates, the
Holder shall have the right for thirty (30) days following  such  termination to
exercise  the  Option  with  respect  to that  portion  thereof  that has become
exercisable  pursuant to Holder's  Agreement as of the date of such termination,
and thereafter the Option shall terminate and cease to be exercisable.

     2.  Disability.  If a Holder  ceases to be  employed by at least one of the
employers in the group of employers  consisting of Company and its Affiliates by
reason of  disability  (as  defined in Sec.  22(e)(3)  of the Code) and does not
remain  or  thereupon  become  a  director  of  Company  or one or  more  of its
Affiliates,  or if the  Holder  ceases  by  reason  of such  disability  to be a
director  of at least  one of the  corporations  in the  group  of  corporations
consisting  of Company and its  Affiliates,  the Holder shall have the right for
ninety (90) days after the date of termination of employment  with, or cessation
of directorship  of, such group of employers by reason of disability,  whichever
occurs later,  to exercise an Option to the extent such Option is exercisable on
the date of his or her  termination  of  employment,  and  thereafter the Option
shall terminate and cease to be exercisable.

     3. Death.  If a Holder dies while in the employ of Company or an Affiliate,
or dies while a director of Company or an Affiliate,  his or her Option shall be
exercisable by his or her legal  representatives,  legatees, or distributees for
six (6) months  following  the date of the  Holder's  death to the  extent  such
Option is exercisable  on the Holder's date of death,  and thereafter the Option
shall terminate and cease to be exercisable.

     B. Term of  Option.  Notwithstanding  any  other  provision  of this  Plan,
including the provisions of Subsection A above, no Incentive Stock Option may be
exercised  after the  expiration  of ten (10) years from the date it was granted
(or the  period  specified  in Sec.  4.1,  if  applicable).  The  Committee  may
prescribe in any Agreement that the Option evidenced thereby may be exercised in
full or in part as to any number of shares  subject  thereto at any time or from
time to time  during the term of the  Option,  or in such  installments  at such
times during said term as the Committee may prescribe.  Except as provided above
and unless  otherwise  provided in any Agreement,  an Option may be exercised at
any time or from time to time during the term of the Option.  Such  exercise may
be as to  any or  all  whole  (but  no  fractional)  shares  which  have  become
purchasable under the Option.


     C. Issuance of Stock  Certificates.  Within a reasonable time, or such time
as may be permitted  by law,  after  Company  receives  written  notice that the
Holder has elected to exercise all or a portion of an Option,  such notice to be
accompanied by payment in full of the aggregate  exercise price of the number of
shares purchased, Company shall issue and deliver a certificate representing the
shares  acquired as a result of the  exercise and any other  amounts  payable in
consequence  of such  exercise.  In the event  that a Holder  exercises  both an
Incentive Stock Option, or portion thereof,  and a Nonstatutory Stock Option, or
a portion  thereof,  separate Stock  certificates  shall be issued,  one for the
Stock subject to the Incentive Stock Option and one for the Stock subject to the
Nonstatutory Stock Option. The number of shares of Stock transferrable due to an
exercise of an Option under this Plan shall not be increased  due to the passage
of time, except as may be provided in an Agreement.

     D. Issuance in Compliance  With Securities  Laws.  Nothing herein or in any
Option granted hereunder shall require Company to issue any shares upon exercise
of any Option if such  issuance  would,  in the opinion of counsel for  Company,
constitute a violation of the Securities Act of 1933, as amended, or any similar
or  superseding  statute  or  statutes,  or  any  other  applicable  statute  or
regulation, as then in effect.

     E. Investment Legend. At the time of exercise of an Option, Company may, as
a condition precedent to the exercise of such Option, require from the Holder of
the  Option  (or  in  the  event  of  his  or  her  death,   his  or  her  legal
representatives,  legatees,  or distributees) such written  representations,  if
any,  concerning  his  or  her  intentions  with  regard  to  the  retention  or
disposition  of the shares  being  acquired  by exercise of such Option and such
written  covenants and agreements,  if any, as to the manner of disposal of such
shares as, in the opinion of counsel to Company, may be necessary to ensure that
any disposition by such Holder (or in the event of his or her death,  his or her
legal representatives,  legatees, or distributees), will not involve a violation
of the Securities Act of 1933, as amended, or any similar or superseding statute
or statutes, or any other applicable state or federal statute or regulation,  as
then in effect.  Certificates  for shares of Stock,  when  issued,  may have the
following  legend,  or statements  of other  applicable  restrictions,  endorsed
thereon, and may not be immediately transferable:

     The shares of Stock evidenced by this  certificate  have been issued to the
registered owner in reliance upon written representations that these shares have
been purchased for  investment.  These shares may not be sold,  transferred,  or
assigned  unless,  in the opinion of Company and its legal  counsel,  such sale,
transfer,  or assignment will not be in violation of the Securities Act of 1933,
as amended,  applicable  rules and  regulations  of the  Securities and Exchange
Commission, and any applicable state securities laws.

     Sec.  6:5.  Limitation  on Aggregate  Value of Shares That May Become First
Exercisable  During Any Calendar  Year Under an  Incentive  Stock  Option.  With
respect to any  Incentive  Stock Option  granted  under this Plan, to the extent
that the aggregate  Fair Market Value of shares of Stock exceed  $100,000,  then
such excess over  $100,000  shall not be  considered  as subject to an Incentive
Stock Option,  but rather shall be considered as subject to a Nonstatutory Stock
Option.  This rule  shall be  applied  by  taking  shares  of Stock  subject  to
Incentive  Stock Options that are purchasable for the first time in the calendar
year into  account  in the order in which  such  Incentive  Stock  Options  were
granted.

     Sec. 6:6. Adjustments Upon Changes in Capitalization, Merger, Etc.

     A.  Method  of  Adjustment.  In the event of any  change  in the  number of
outstanding  shares of Stock effected without receipt of consideration  therefor
by Company by reason of a stock  dividend,  or split,  combination,  exchange of
shares or other recapitalization,  merger, or otherwise, in which Company is the
surviving  corporation,  the aggregate  number and class of the reserved shares,
the  number  and class of shares  subject to each  outstanding  Option,  and the
exercise price of each  outstanding  Option shall be  automatically  adjusted to
accurately  and equitably  reflect the effect  thereon of such change  (provided
that any fractional share resulting from such adjustment may be eliminated).  In
the event of a dispute concerning such adjustment, the decision of the Committee
shall be  conclusive.  The  number of  reserved  shares or the  number of shares
subject to any outstanding Option shall be automatically reduced by any fraction
included therein which results from any adjustment made pursuant hereto.

          B. Termination of Option. The following  provisions shall apply unless
a Holder's  Agreement  provides  otherwise.  A  dissolution  or  liquidation  of
Company; a sale of all or substantially all of the assets of Company where it is
contemplated  that within a reasonable  period of time  thereafter  Company will
either  be  liquidated  or  converted   into  a   nonoperating   company  or  an
extraordinary  dividend will be declared  resulting in a partial  liquidation of
Company  (but in all  cases  only with  respect  to those  employees  whom it is
anticipated  will lose their  employment  with Company and its  Affiliates  as a
result of such sale of assets);  a merger or consolidation  (other than a merger
effecting a reincorporation of Company in another state or any other merger or a
consolidation in which the  shareholders of the surviving  corporation and their
proportionate  interests  therein  immediately after the merger or consolidation
are   substantially   identical  to  the   shareholders  of  Company  and  their
proportionate   interests   therein   immediately   prior  to  the   merger   or
consolidation)  in which Company is not the surviving  corporation  (or survives
only as a  subsidiary  of  another  corporation  in a  transaction  in which the
shareholders of the parent of Company and their proportionate  interests therein
immediately  after  the  transaction  are  not  substantially  identical  to the
shareholders of Company and their  proportionate  interests therein  immediately
prior  to  the  transaction)  shall  cause  every  Option  then  outstanding  to
terminate,  but the Holders of each such then  outstanding  Option shall, in any
event, have the right, immediately prior to such dissolution,  liquidation, sale
of assets, merger, consolidation,  or transaction, to exercise each such Option,
to the extent not theretofore exercised,  without regard to the determination as
to the periods and  installments of  exercisability  made pursuant to a Holder's
Agreement  if (and only if) such  Options  have not at that time expired or been
terminated.

     Sec.  6:7.  Rights  as a  Shareholder.  A Holder  shall  have no right as a
shareholder  with  respect  to any shares  covered by his or her Option  until a
certificate  representing  such  shares is issued to him or her.  No  adjustment
shall be made for dividends (ordinary or extraordinary, whether in cash or other
property) or distributions or other rights for which the record date is prior to
the date such certificate is issued (except as provided in Sec. 6.6. hereof).

     Sec. 6:8. Modification,  Extension,  and Renewal of Options. Subject to the
terms and  conditions of and within the  limitations  of the Plan, the Committee
may modify,  extend,  or renew  outstanding  Options  granted under the Plan, or
accept  the  surrender  of  Options  outstanding  hereunder  (to the  extent not
theretofore  exercised)  and authorize the granting of new Options  hereunder in
substitution therefor (to the extent not theretofore  exercised).  The Committee
may not,  however,  without the consent of the  Holder,  modify any  outstanding
Incentive  Stock Options so as to specify a lower  exercise  price or accept the
surrender of outstanding  Incentive  Stock Options and authorize the granting of
new  Options in  substitution  therefor  specifying  a lower  option  price.  In
addition,  no  modification  of an Option  granted  hereunder  may,  without the
consent  of the  Holder,  alter or impair any  rights or  obligations  under any
Option  theretofore  granted  hereunder to such Holder under the Plan, except as
may be  necessary  with  respect to  Incentive  Stock  Options  to  satisfy  the
requirements of Sec. 422 of the Code.

     Sec.  6:9.  Furnish  Information.  Each Holder shall furnish to Company all
information  requested  by Company to enable it to comply with any  reporting or
other  requirements  imposed upon Company by or under any applicable  statute or
regulation.

     Sec. 6:10. Obligation to Exercise;  Termination of Employment. The granting
of an Option  hereunder  shall impose no obligation  upon the Holder to exercise
the  same or any  part  thereof.  In the  event  of a  Holder's  termination  of
employment with Company or an Affiliate,  the  unexercised  portion of an Option
granted hereunder shall terminate in accordance with Sec. 6.4 hereof.

     Sec. 6:11. Agreement  Provisions.  The Agreements authorized under the Plan
shall  contain  such  provisions  in  addition  to  those  required  by the Plan
(including, without limitation, restrictions or the removal of restrictions upon
the  exercise of the Option and the  retention  or  transfer  of shares  thereby
acquired) as the Committee  deems  advisable.  Each Agreement shall identify the
Option  evidenced  thereby as an Incentive  Stock Option or  Nonstatutory  Stock
Option, as the case may be, and no Agreement shall cover both an Incentive Stock
Option and Nonstatutory Stock Option. Except as provided by Subsection B of Sec.
6.6, each  Agreement  relating to an Incentive  Stock Option  granted  hereunder
shall  contain  such  limitations  and  restrictions  upon the  exercise  of the
Incentive  Stock  Option to which it relates as is necessary  for the  Incentive
Stock Option to which such  Agreement  relates to constitute an incentive  stock
option, as defined in Sec. 422 of the Code.


                                  Article VII
                                Duration of Plan

     No Incentive Stock Options may be granted  hereunder after the date that is
ten (10)  years  from the  earlier  of: (i) the date this Plan is adopted by the
Board  of  Directors;  or (ii) the  date  this  Plan is  approved  by  Company's
shareholders. In addition, with respect to shares of Stock not currently covered
by an outstanding  Option,  this Plan may be terminated at any time by the Board
of Directors.


                                  Article VIII
                                Amendment of Plan

     The Board of Directors  may,  insofar as permitted by law,  with respect to
any shares at the time are not subject to Options,  suspend or  discontinue  the
Plan or revise or amend it in any respect whatsoever;  provided,  however, that,
without the approval of the holders of a majority of the  outstanding  shares of
voting stock of all classes of Company, no such revision or amendment shall: (a)
change  the number of shares of the Stock  subject  to the Plan,  (b) change the
designation of the class of employees eligible to receive Options,  (c) decrease
the price at which  Incentive  Stock  Options  may be  granted,  (d)  remove the
administration of the Plan from the Committee, or (e) without the consent of the
affected  Holder,  cause the  Incentive  Stock  Options  granted  hereunder  and
outstanding at such time that satisfied the requirements of Sec. 422 of the Code
to no longer satisfy such requirements.

                                 Article IX
                                   General

     Sec. 9:1.  Application of Funds. The proceeds  received by Company from the
sale of shares pursuant to Options shall be used for general corporate purposes.

     Sec. 9:2. Right of Company and Affiliates to Terminate Employment.  Nothing
contained  in the Plan,  or in any  Agreement,  shall confer upon any Holder the
right to continue in the employ of Company or any Affiliate, or interfere in any
way  with the  rights  of  Company  or any  Affiliate  to  terminate  his or her
employment at any time.

     Sec. 9:3. No Liability for Good Faith  Determinations.  Neither the members
of the Board of Directors  nor any member of the  Committee  shall be liable for
any act, omission,  or determination taken or made in good faith with respect to
the Plan or any Option  granted  under it, and members of the Board of Directors
and the Committee  shall be entitled to  indemnification  and  reimbursement  by
Company in respect of any claim, loss, damage, or expense (including  attorneys'
fees,  the costs of settling any suit,  provided such  settlement is approved by
independent legal counsel selected by Company,  and amounts paid in satisfaction
of a  judgment,  except a  judgment  based on a finding  of bad  faith)  arising
therefrom  to the full  extent  permitted  by law and  under any  directors  and
officers  liability or similar insurance  coverage that may from time to time be
in effect.

     Sec.  9:4.  Information  Confidential.  As  partial  consideration  for the
granting of each Option  hereunder,  the Holder shall agree with Company that he
or she will keep  confidential  all information and knowledge that he or she has
relating to the manner and amount of his  participation  in the Plan;  provided,
however,  that such  information  may be disclosed as required by law and may be
given in confidence to the Holder's spouse, tax, and financial advisors, or to a
financial institution to the extent that such information is necessary to secure
a loan.  In the event any breach of this promise  comes to the  attention of the
Committee,  it shall take into consideration such breach, in determining whether
to  recommend  the  grant  of any  future  Option  to such  Holder,  as a factor
militating  against the  advisability of granting any such future Option to such
individual.

     Sec. 9:5. Other Benefits.  Participation in the Plan shall not preclude the
Holder  from  eligibility  in any other  stock  option  plan of  Company  or any
Affiliate or any old age benefit, insurance, pension, profit sharing retirement,
bonus,  or other extra  compensation  plans which  Company or any  Affiliate has
adopted, or may, at any time, adopt for the benefit of its employees.

     Sec. 9:6.  Execution of Receipts and  Releases.  Any payment of cash or any
issuance or  transfer  of shares of Stock to the Holder,  or to his or her legal
representative, heir, legatee, or distributee, in accordance with the provisions
hereof,  shall, to the extent thereof,  be in full satisfaction of all claims of
such  persons   hereunder.   The  Committee   may  require  any  Holder,   legal
representative,  heir, legatee, or distributee, as a condition precedent to such
payment,  issuance,  or transfer,  to execute a release and receipt  therefor in
such form as it shall determine.

     Sec.  9:7. No Guarantee of  Interests.  Neither the  Committee  nor Company
guarantees the Stock of Company from loss or depreciation.

     Sec. 9:8. Payment of Expenses. All expenses incident to the administration,
termination, or protection of the Plan, including, but not limited to, legal and
accounting fees, shall be paid by Company or its Affiliates.

     Sec. 9:9. Company Records.  Records of Company or its Affiliates  regarding
the Holder's  period of  employment,  termination  of employment  and the reason
therefor,  leaves  of  absence,  re-employment,   and  other  matters  shall  be
conclusive for all purposes hereunder,  unless determined by the Committee to be
incorrect.

     Sec. 9:10.  Information.  Company and its Affiliates shall, upon request or
as may be specifically required hereunder, furnish or cause to be furnished, all
of the  information  or  documentation  which is  necessary  or  required by the
Committee to perform its duties and functions under the Plan.

     Sec.  9:11.  No  Liability of Company.  Company  assumes no  obligation  or
responsibility  to the  Holder or his or her  personal  representatives,  heirs,
legatees,  or distributees for any act of, or failure to act on the part of, the
Committee.

     Sec.  9:12.  Company  Action.  Any action  required of Company  shall be by
resolution  of its  Board  of  Directors  or by a  person  authorized  to act by
resolution of the Board of Directors.

     Sec.  9:13.  Severability.  If any  provision  of  this  Plan is held to be
illegal or invalid for any reason, the illegality or invalidity shall not affect
the remaining  provisions  hereof,  but such provision shall be fully severable,
and the Plan  shall be  construed  and  enforced  as if the  illegal  or invalid
provision had never been included herein.

     Sec. 9:14. Notices. Whenever any notice is required or permitted hereunder,
such notice must be in writing and  personally  delivered  or sent by mail.  Any
notice  required or permitted to be  delivered  hereunder  shall be deemed to be
delivered on the date on which it is personally delivered,  or, whether actually
received or not, on the third  business  day after it is deposited in the United
States mail, certified or registered,  postage prepaid,  addressed to the person
who is to receive it at the address which such person has theretofore  specified
by written  notice  delivered in  accordance  herewith.  Company or a Holder may
change,  at any time and from time to time, by written notice to the other,  the
address which it or he had theretofore  specified for receiving  notices.  Until
changed in accordance herewith, Company and each Holder shall specify as its and
his or her address for receiving  notices the address set forth in the Agreement
pertaining to the shares to which such notice relates.

     Sec. 9:15.  Waiver of Notice.  Any person entitled to notice  hereunder may
waive such notice.

     Sec. 9:16.  Successors.  The Plan shall be binding upon the Holder,  his or
her heirs, legatees,  and legal  representatives,  upon Company, its successors,
and assigns, and upon the Committee, and its successors.

     Sec. 9:17.  Headings.  The titles and headings of Sections and  Subsections
are included for  convenience  of reference only and are not to be considered in
construction of the provisions hereof.

     Sec.  9:18.  Governing  Law.  All  questions  arising  with  respect to the
provisions  of the Plan shall be determined  by  application  of the laws of the
State of Texas  except to the extent  Texas law is  preempted  by  federal  law.
Questions  arising  with  respect to the  provisions  of an  Agreement  that are
matters of contract law shall be governed by the laws of the state  specified in
the  Agreement,  except to the extent Texas  corporate  law  conflicts  with the
contract law of such state, in which event Texas corporate law shall govern. The
obligation  of  Company  to sell and  deliver  Stock  hereunder  is  subject  to
applicable laws and to the approval of any  governmental  authority  required in
connection with the authorization, issuance, sale, or delivery of such Stock.

     Sec.  9:19.  Word  Usage.  Words used in the  masculine  shall apply to the
feminine where applicable,  and wherever the context of this Plan dictates,  the
plural shall be read as the singular and the singular as the plural.

     Sec.  9:20.  Remedies.   Company  may  recover  from  a  Holder  reasonable
attorneys'  fees incurred in connection  with the  enforcement  of the terms and
provisions  of the  Plan and any  Agreement  whether  by an  action  to  enforce
specific performance or for damages for its breach or otherwise.


                                 Article X
                          Approval of Shareholders

     The Plan  shall  take  effect  on the date it is  adopted  by the  Board of
Directors. However, if this Plan is not approved by the holders of a majority of
the  outstanding  shares of Company's  Common Stock and  Preferred  Stock at the
annual meeting of Shareholders scheduled to be held on May 11, 2000, any Options
granted  hereunder  shall be null,  void, and of no force and effect as of their
grant date.

     IN  WITNESS  WHEREOF,  TGC  Industries,  Inc.,  acting by and  through  its
officers  hereunto duly  authorized has executed this instrument to be effective
the 14th day of December, 1999.

                                         TGC INDUSTRIES, INC.

                                         By:     /s/ Allen T. McInnes

                                                 -----------------------------
                                                        Allen T. McInnes,
                                                        Chairman of the Board


<PAGE>























                                    EXHIBIT B

                       STATEMENT OF RESOLUTION ESTABLISHING
                      8-1/2% SENIOR CONVERTIBLE PREFERRED STOCK

                                        OF
                                TGC INDUSTRIES, INC.


<PAGE>






                        STATEMENT OF RESOLUTION ESTABLISHING
                     8 1/2% SENIOR CONVERTIBLE PREFERRED STOCK OF

                               TGC INDUSTRIES, INC.

     Pursuant  to  the   provisions  of  Article  2.13  of  the  Texas  Business
Corporation Act, TGC,  Industries,  Inc., a Texas corporation (the "Corporation"
or the "Company"),  has adopted the following resolution by all necessary action
on the part of the Corporation at a special meeting of the Board of Directors on
November  30,  1999,  authorizing  the  creation  and  issuance  of a series  of
preferred stock designated as 8 1/2% Senior Convertible Preferred Stock:

     RESOLVED,  that pursuant to the authority  vested in the Board of Directors
of the Corporation by Article 4.b of the  Corporation's  Certificate of Restated
Articles  of  Incorporation,  as  amended,  a series of  preferred  stock of the
Corporation  be, and it is hereby,  created out of the  authorized  but unissued
shares of the capital stock of the  Corporation,  such series to be designated 8
1/2% Senior Convertible  Preferred Stock (the "Preferred  Stock"), to consist of
2,750,000  shares,  of which the preferences and relative and other rights,  and
the qualifications,  limitations or restrictions thereof,  shall be (in addition
to those  set  forth  in the  Corporation's  Certificate  of  Incorporation,  as
amended) as follows:

     1. Certain  Definitions.  Unless the context otherwise requires,  the terms
defined in this paragraph 1 shall have, for all purposes of this resolution, the
meanings herein specified.

     Common  Stock.  The  term  "Common  Stock"  shall  mean all  shares  now or
hereafter  authorized  of any class of Common Stock of the  Corporation  and any
other stock of the Corporation, howsoever designated, authorized after the Issue
Date, which has the right (subject always to prior rights of any class or series
of  preferred  stock) to  participate  in the  distribution  of the  assets  and
earnings of the Corporation without limit as to per share amount.

     Conversion  Date.  The term  "Conversion  Date"  shall have the meaning set
forth in subparagraph 3(e) below.

     Conversion Ratio. The term "Conversion  Ratio" shall mean the ratio used to
determine the number of shares of Common Stock  deliverable  upon  conversion of
the Preferred Stock,  subject to adjustment in accordance with the provisions of
paragraph 3 below.

     Issue  Date.  The term  "Issue  Date"  shall  mean the date that  shares of
Preferred Stock are first issued by the Corporation.

     Series C Preferred  Stock.  The term "Series C Preferred  Stock" shall mean
the Corporation's Series C 8% Convertible Exchangeable Preferred Stock.

     Subsidiary.  The term  "Subsidiary"  shall  mean any  corporation  of which
shares of stock  possessing  at least a majority of the general  voting power in
electing the board of directors are, at the times as of which any  determination
is being made, owned by the Corporation,  whether directly or indirectly through
one or more Subsidiaries.

     2. Dividends. The Preferred Stock shall be senior in rights to dividends to
all classes and series of stock of the Corporation, including without limitation
the  Corporation's  Series C Preferred  Stock. In addition,  the Preferred Stock
shall have the following dividend rights:

     (a)  Declaration  of  Dividends.  The holders of shares of Preferred  Stock
shall be entitled to receive cumulative cash dividends,  when and as declared by
the Board of Directors out of funds  legally  available  therefor,  at a rate of
eight and one-half  percent (8 1/2%) per annum and no more  ($0.09775  per share
per  annum  based on the per  share  liquidation  value of  $1.15),  before  any
dividend or distribution in cash or other property (other than dividends payable
in  stock  ranking  junior  to the  Preferred  Stock  as to  dividends  and upon
liquidation,  dissolution  or winding-up) on any class or series of stock of the
Corporation  ranking  junior  to  the  Preferred  Stock  as to  dividends  or on
liquidation,  dissolution  or winding-up  shall be declared or paid or set apart
for payment.

     (b)  Payment  of  Dividends.  Dividends  on the  Preferred  Stock  shall be
payable, when and as declared by the Board of Directors on December 1 and June 1
of each  year,  commencing  June 1,  2000  (each  such  date  being  hereinafter
individually a "Dividend  Payment Date" and collectively  the "Dividend  Payment
Dates"),  except that if such date is a Saturday,  Sunday or legal  holiday then
such dividend shall be payable on the first immediately  preceding  calendar day
which is not a Saturday,  Sunday or legal holiday,  to holders of record as they
appear on the books of the Corporation on such respective  dates,  not exceeding
sixty days  preceding  such  Dividend  Payment Date, as may be determined by the
Board of  Directors  in advance  of the  payment  of each  particular  dividend.
Dividends in arrears may be declared and paid at any time,  without reference to
any regular  Dividend  Payment Date, to holders of record on such date as may be
fixed by the Board of Directors of the Corporation.  Dividends declared and paid
in arrears shall be applied first to the earliest dividend period or periods for
which any  dividends  remain  outstanding.  The amount of dividends  payable per
share of this Series for each dividend  period shall be computed by dividing the
annual rate of eight and one-half percent (8 1/2%) by two (2). Dividends payable
on this  Series  for the  initial  period  and for any  period  less than a full
semi-annual  period  shall be computed on the basis of a 360-day  year of twelve
30-day  months.  Dividends  shall be  payable  in cash,  provided  that for each
dividend  declared and payable  through  December 1, 2000, the dividend  payment
shall be by payment in kind  securities  by  issuance  of  additional  shares of
Preferred  Stock  with a  liquidation  value  equal  to the  amount  of the cash
dividend payment which would have been paid ("PIK Dividend").  For each dividend
payment due and payable after  December 1, 2000,  payment shall be by cash or by
PIK  Dividend  at  the  election  of  the  holders  by  written  notice  to  the
Corporation, provided that the Corporation shall only pay a PIK Dividend and not
a cash  dividend in the event the  Corporation's  earnings  before  deduction of
interest,  taxes,  depreciation and amortization (EBITDA) for the six (6) months
ended with the previous quarter (for the December 1 payment:  the six (6) months
ended  September 30; and for the June 1 payment:  the six (6) months ended March
31) are less than one hundred  twenty-five  percent (125%) of the  Corporation's
obligation  for such dividend  payment and for all other  dividends and interest
due and payable on all other  outstanding  securities of the  Corporation  as of
such time.

     (c) Dividends  Cumulative.  Preferred  Stock shall be cumulative and accrue
from and after the date of original issuance thereof, whether or not declared by
the Board of Directors. Accrued dividends shall not bear interest.

     (d)  Dividend  Restriction.  No cash  dividend may be declared on any other
class or series of stock  ranking  on a parity  with the  Preferred  Stock as to
dividends in respect of any dividend  period  unless there shall also be or have
been declared on the Preferred  Stock like dividends for all periods  coinciding
with or ending  before such  semi-annual  period,  ratably in  proportion to the
respective   annual  dividend  rates  fixed  therefor  and  the  total  dividend
obligation with respect thereto.

     3. Conversion  Rights. The Preferred Stock shall be convertible into Shares
of Common Stock as follows:

     (a)  Conversion  Right.  The holder of any shares of Preferred  Stock shall
have the right,  at such  holder's  option,  at any time to convert  any of such
shares of  Preferred  Stock into fully paid and  nonassessable  shares of Common
Stock  at the  Conversion  Ratio  provided  for in  subparagraph  3(d)  below by
surrendering  shares  of  Preferred  Stock for  conversion  in  accordance  with
subparagraph 3(e) below.

     (b) Continuance of Conversion  Right.  The Conversion Right set forth above
will continue so long as such Preferred Stock is outstanding with respect to any
stock not redeemed in accordance with the terms of paragraph 7.

     (c) Surrender of Shares on Exercise of Conversion  Right. In the event that
any holder of shares of Preferred  Stock  surrenders such shares for conversion,
such  holder  will be issued the number of shares of Common  Stock to which such
holder is entitled pursuant to the provisions of subparagraph 3(d) in the manner
provided for in subparagraph  3(e). The shares of Preferred Stock deemed to have
been surrendered will have the status described in paragraph 11 below.

     (d) Conversion  Ratio. Each share of Preferred Stock may, at the discretion
of the  holder  thereof,  be  converted  into  shares  of  Common  Stock  of the
Corporation  at the  conversion  ratio of one (1) share of Common Stock for each
share  of  Preferred  Stock,  as  such  conversion  ratio  may be  adjusted  and
readjusted from time to time in accordance with  subparagraph  3(g) hereof (such
conversion  ratio,  as adjusted and readjusted and in effect at any time,  being
herein called the "Conversion  Ratio").  The Conversion  Ratio referred to above
will be subject to adjustment as set forth in subparagraph 3(g).

     (e) Mechanics of  Conversion.  The holder of any shares of Preferred  Stock
may exercise the conversion right specified in subparagraph 3(a) by surrendering
to the  Corporation or any transfer agent of the  Corporation the certificate or
certificates  for the shares to be  converted,  accompanied  by  written  notice
specifying the number of shares to be converted.  Conversion  shall be deemed to
have been  effected  upon receipt of the  certificate  or  certificates  for the
shares to be  converted  accompanied  by written  notice of  election to convert
specifying  the number of shares to be  converted.  The date of such  receipt is
referred  to  herein  as the  "Conversion  Date."  As  promptly  as  practicable
thereafter (and after surrender of the certificate or certificates  representing
shares  of  Preferred  Stock to the  Corporation  or any  transfer  agent of the
Corporation)  the  Corporation  shall  issue and  deliver to or upon the written
order of such holder a certificate or certificates for the number of full shares
of  Common  Stock to which  such  holder  is  entitled  and a check or cash with
respect to any  fractional  interest  in a share of Common  Stock as provided in
subparagraph  3(f). The person in whose name the certificate or certificates for
Common  Stock are to be issued shall be deemed to have become a holder of record
of such Common Stock on the applicable  Conversion Date. Upon conversion of only
a portion of the number of shares covered by a certificate  representing  shares
of Preferred Stock  surrendered for conversion,  the Corporation shall issue and
deliver  to or upon  the  written  order of the  holder  of the  certificate  so
surrendered for conversion, at the expense of the Corporation, a new certificate
covering the number of shares of Preferred  Stock  representing  the unconverted
portion of the certificate so surrendered.

     (f) Fractional  Shares.  No fractional Shares or scrip shall be issued upon
conversion  of shares of  Preferred  Stock.  If more than one share of Preferred
Stock shall be  surrendered  for  conversion at any one time by the same holder,
the number of shares of Common Stock issuable upon  conversion  thereof shall be
computed on the basis of the  aggregate  number of shares of Preferred  Stock so
surrendered.  Instead of any fractional shares which would otherwise be issuable
upon conversion of any shares of Preferred  Stock,  the Corporation  shall pay a
cash  adjustment  in respect of such  fractional  interest in an amount equal to
that fractional interest of the then current market price.

     (g) Conversion Ratio Adjustments.  The Conversion Ratio shall be subject to
adjustment from time to time as follows:

     (i) Stock Dividends,  Subdivisions,  Reclassifications or Combinations.  If
the  Corporation  shall (x)  declare a dividend  or make a  distribution  on its
Common Stock in shares of its Common  Stock,  (y)  subdivide or  reclassify  the
outstanding  shares of Common  Stock  into a greater  number of  shares,  or (z)
combine or  reclassify  the  outstanding  Common Stock into a smaller  number of
shares,  the Conversion  Ratio in effect at the time of the record date for such
dividend or distribution or the effective date of such subdivision,  combination
or reclassification shall be proportionately  adjusted so that the holder of any
shares of Preferred Stock  surrendered  for conversion  after such date shall be
entitled  to receive  the number of shares of Common  Stock  which he would have
owned or been  entitled  to receive  had such  Preferred  Stock  been  converted
immediately prior to such date.  Successive  adjustments in the Conversion Ratio
shall be made whenever any event specified above shall occur.

     (ii) Other  Distributions.  In case the Corporation shall fix a record date
for the making of a  distribution  to all holders of shares of its Common  Stock
(w) of shares of any class  other than its Common  Stock or (x) of  evidence  of
indebtedness  of the  Corporation or any Subsidiary or (y) of assets  (excluding
cash dividends or distributions,  and dividends or distributions  referred to in
subparagraph 3(g)(i) above), or (z) of rights or warrants, in each such case the
Conversion  Ratio in  effect  immediately  prior  thereto  shall be  immediately
thereafter  proportionately adjusted for such distribution so that the holder of
Preferred  Stock  would be  entitled  to  receive  the  fair  market  value  (as
determined by the Board of Directors, whose determination in good faith shall be
conclusive)  of what he would have been  entitled to receive had such  Preferred
Stock been converted prior to such  distribution.  Such adjustment shall be made
successively  whenever  such a record  date is  fixed.  In the  event  that such
distribution  is not so made,  the  Conversion  Ratio  then in  effect  shall be
readjusted,  effective as of the date when the Board of Directors determines not
to  distribute  such  shares,  evidences  of  indebtedness,  assets,  rights  or
warrants,  as the case may be, to the  Conversion  Ratio  which would then be in
effect if such record date had not been fixed.

     (iii)  Consolidation,  Merger,  Sale,  Lease or Conveyance.  In case of any
consolidation with or merger of the Corporation with or into another corporation
or entity, or in case of any sale, lease or conveyance to another corporation or
entity of the assets of the  Corporation as an entirety or  substantially  as an
entirety,   each  share  of  Preferred  Stock  shall  after  the  date  of  such
consolidation,  merger, sale, lease or conveyance be convertible into the number
of shares of stock or other securities or property (including cash) to which the
shares of Common  Stock  issuable  (at the time of such  consolidation,  merger,
sale,  lease or  conveyance)  upon  conversion of such share of Preferred  Stock
would  have  been  entitled  upon such  consolidation,  merger,  sale,  lease or
conveyance;  and in any such case, if necessary, the provisions set forth herein
with respect to the rights and interests thereafter of the holders of the shares
of Preferred Stock shall be  appropriately  adjusted so as to be applicable,  as
nearly as may  reasonably  be, to any  shares  of stock or other  securities  or
property  thereafter  deliverable  on the  conversion of the shares of Preferred
Stock.

     (h) Statement Regarding Adjustments. Whenever the Conversion Ratio shall be
adjusted as provided in subparagraph 3(g), the Corporation shall forthwith file,
at the office of any transfer agent for the Preferred Stock and at the principal
office of the  Corporation,  a statement  showing in detail the facts  requiring
such  adjustment  and the  Conversion  Ratio that shall be in effect  after such
adjustment,  and the Corporation shall also cause a copy of such statement to be
sent by mail, first class postage prepaid, to each holder of shares of Preferred
Stock at its address appearing on the Corporation's  records. Where appropriate,
such  copy may be  given  in  advance  and may be  included  as part of a notice
required to be mailed under the provisions of subparagraph 3(i).

     (i) Notice to Holders.  In the event the Corporation  shall propose to take
any action of the type  described in clause (i),  (ii) or (iii) of  subparagraph
3(g),  the  Corporation  shall give notice to each holder of shares of Preferred
Stock, in the manner set forth in subparagraph  3(h), which notice shall specify
the record date,  if any,  with  respect to any such action and the  approximate
date on which such  action is to take place.  Such  notice  shall also set forth
such facts with respect thereto as shall be reasonably necessary to indicate the
effect of such  action  (to the extent  such  effect may be known at the date of
such  notice) on the  Conversion  Ratio and the number,  kind or class of shares
which shall be deliverable  upon conversion of shares of Preferred Stock. In the
case of any action which would require the fixing of a record date,  such notice
shall be given at least 10 days  prior to the date so fixed,  and in case of all
other action, such notice shall be given at least 15 days prior to the taking of
such proposed action.  Failure to give such notice, or any defect therein, shall
not affect the legality or validity of any such action.

     (j) Treasury Stock. For the purposes of this paragraph 3, the sale or other
disposition of any Common Stock theretofore held in the  Corporation's  treasury
shall be deemed to be an issuance thereof.

     (k) Costs. The Corporation  shall pay all documentary,  stamp,  transfer or
other  transactional taxes attributable to the issuance or delivery of shares of
Common Stock upon conversion of any shares of Preferred Stock; provided that the
Corporation  shall not be  required  to pay any taxes  which may be  payable  in
respect of any transfer  involved in the issuance or delivery of any certificate
for such  shares  in a name  other  than  that of the  holder  of the  shares of
Preferred Stock in respect of which such shares are being issued.

     (l) Reservation of Shares.  The  Corporation  shall reserve at all times so
long as any shares of Preferred Stock remain  outstanding,  free from preemptive
rights, out of its treasury stock (if applicable) or its authorized but unissued
shares of Common  Stock,  or both,  solely  for the  purpose  of  effecting  the
conversion of the shares of Preferred Stock,  sufficient  shares of Common Stock
to provide for the conversion of all outstanding shares of Preferred Stock.

     (m) Approvals. If any shares of Common Stock to be reserved for the purpose
of conversion of shares of Preferred Stock require registration with or approval
of any governmental  authority under any Federal or state law before such shares
may be validly issued or delivered,  then the Corporation will in good faith and
as expeditiously as possible  endeavor to secure such  registration or approval,
as the case may be. If,  and so long as,  any shares of Common  Stock into which
the shares of Preferred  Stock are then  convertible  are listed on any national
securities  exchange,  the  Corporation  will, if permitted by the rules of such
exchange,  list and keep  listed  on such  exchange,  upon  official  notice  of
issuance, all such shares issuable upon conversion.

     (n) Valid  Issuance.  All shares of Common  Stock  which may be issued upon
conversion  of  the  shares  of  Preferred  Stock  will  upon  issuance  by  the
Corporation be duly and validly issued,  fully paid and  nonassessable  and free
from all taxes, liens and charges with respect to the issuance thereof,  and the
Corporation shall take no action which will cause a contrary result.

     4. Voting Rights.  The holders of the shares of the Preferred Stock will be
entitled to one vote per share of Preferred  Stock held by them to vote upon all
matters which the holders of shares of the Company's Common Stock shall have the
right to vote. In all cases,  as a matter of law, where the holders of shares of
Preferred Stock shall have the right to vote separately as a class, such holders
will also be entitled to one vote per share of Preferred Stock held by them.

     The  affirmative  vote or consent of the holders of at least  two-thirds of
the  outstanding  shares of the  Preferred  Stock,  voting  as a class,  will be
required to (i) authorize, create or issue, or increase the authorized or issued
amount  of,  shares  of any  class or  series  of stock  ranking  senior  to the
Preferred  Stock,  either as to  dividends or upon  liquidation,  or (ii) amend,
alter or repeal (whether by merger,  consolidation  or otherwise) any provisions
of the  Company's  Articles of  Incorporation  or of the Statement of Resolution
establishing  this series of Preferred  Stock so as to materially  and adversely
affect  the  preferences,  special  rights  or powers  of the  Preferred  Stock;
provided,  however,  that any increase in the authorized  preferred stock or the
creation and issuance of any other series of preferred stock ranking on a parity
with or junior to the  Preferred  Stock  shall not be deemed to  materially  and
adversely affect such preferences, special rights or powers.

     5. Liquidation Rights.  Upon the dissolution,  liquidation or winding up of
the Corporation,  whether voluntary or involuntary, the holders of the shares of
this series of Preferred Stock shall be entitled to receive,  before any payment
or distribution of the assets of the  Corporation or proceeds  thereof  (whether
capital or surplus)  shall be made to or set apart for the holders of the Common
Stock or any other class or series of stock ranking junior to the shares of this
series of Preferred Stock upon  liquidation,  including  without  limitation the
Series C Preferred Stock, the amount of One Dollar and Fifteen Cents ($1.15) per
share,  plus a sum equal to all dividends on such shares  (whether or not earned
or declared) accrued and unpaid thereon to the date of final  distribution,  but
such  holders  shall  not be  entitled  to any  further  payment.  If,  upon any
liquidation,  dissolution  or winding-up of the  Corporation,  the assets of the
Corporation,  or proceeds thereof,  distributable among the holders of shares of
the Preferred  Stock and any other class or series of preferred stock ranking on
a parity with the Preferred Stock as to payments upon  liquidation,  dissolution
or  winding-up  shall be  insufficient  to pay in full the  preferential  amount
foresaid,  then such assets or the proceeds  thereof shall be distributed  among
such holders  ratably in accordance  with the respective  amounts which would be
payable on such shares if all amounts payable thereon were paid in full. For the
purposes of this paragraph 5, the voluntary sale, conveyance, lease, exchange or
transfer (for cash, shares of stock,  securities or other  consideration) of all
or  substantially  all the  property  or  assets  of the  Corporation  to,  or a
consolidation  or  merger  of the  Corporation  with,  one or more  corporations
(whether or not the Corporation is the corporation  surviving such consolidation
or merger) shall not be deemed to be a  liquidation,  dissolution or winding-up,
voluntary or involuntary.

     6.     Registration Rights.

     (a)  Registration  on Request.  Upon the  written  request of any holder or
holders of at least fifty-one percent (51%) in the aggregate number of shares of
the  Preferred  Stock  and/or  shares of Common  Stock  ("Shares")  issued  upon
conversion of such Preferred  Stock  (provided that in computing such 51% amount
the number of shares of  Preferred  Stock and  Common  Stock  shall be  weighted
proportionately  taking into account the Conversion  Ratio with respect to which
such shares of Common Stock were issued upon  conversion),  which  request shall
state the  intended  method of  disposition  by such holder or holders and shall
request that the Company effect the  registration of all or part of such Shares,
or the Shares  issuable upon the  conversion of such Preferred  Stock,  or both,
under the  Securities  Act of 1933,  as amended  (the  "Act"),  the Company will
promptly give written  notice of such requested  registration  to all holders of
outstanding  Preferred Stock and Shares, and thereupon will use its best efforts
to effect the registration under the Act of:

     (i) the Shares which the Company has been so  requested  to  register,  for
     disposition in accordance with the intended method of disposition stated in
     such request, and

     (ii) all other  outstanding  Shares, or Shares issuable upon the conversion
     of Preferred  Stock,  the holders of which shall have made written  request
     (stating the intended  method of  disposition  of such  securities  by such
     holders) to the Company for  registration  thereof  within thirty (30) days
     after the receipt of such written notice from the Company,

all to the extent  requisite to permit the  disposition  (in accordance with the
intended  methods  thereof  as  aforesaid)  by  the  holders  of the  Shares  so
registered  and  to  maintain  such  registration  in  effect  for a  period  of
twenty-four (24) months from the effective date of such registration  statement;
provided,  that the  Company  shall not be  required to register or use its best
efforts to effect any  registration  of Shares  under the Act  pursuant  to this
paragraph  6(a)  more  than  once.  In the  event  that,  as a  result  of  such
registration,  another person with incidental registration rights granted by the
company  requests  that the Company  include  securities  of such person in such
registration,  such  request  will not  result in a  reduction  in the number of
securities of the holder or holders of the  Preferred  Stock and/or Shares to be
included in such registration.

     The Company shall have no obligation to register or use its best efforts to
effect any  registration  of Shares under the Act  pursuant to this  paragraph 6
which  would be in  conflict  with the  obligations  of any holder or holders of
Preferred Stock and/or Shares under any  confidentiality  agreement between such
holder or holders and the Company  entered into in connection  with the offering
of the Preferred Stock to such holder or holders.

          (b)  Incidental  Registration.  If the Company at any time proposes to
register  any of its  securities  under  the Act  (otherwise  than  pursuant  to
paragraph 6(a) and other than a  registration  on Form S-8, or the form, if any,
which  supplants  such Form),  it will at such time give  written  notice to all
holders of outstanding Preferred Stock and Shares of its intention to do so and,
upon the written  request of any such holder made within  thirty (30) days after
the receipt of any such notice (which request shall specify the Shares  intended
to be disposed of by such holder and state the  intended  method of  disposition
thereof),  the Company will use its best  efforts to cause all such  outstanding
Shares,  or Shares issuable upon the conversion of Preferred  Stock, the holders
of which shall have so requested  the  registration  thereof,  to be  registered
under the Act to the extent  requisite to permit the  disposition (in accordance
with the intended  methods  thereof as aforesaid)  of the Shares so  registered;
provided  that,  if in the good faith  judgment of the managing  underwriter  or
underwriters  of a then proposed  public  offering of the Company's  securities,
such  registration  of such Shares would  materially  and adversely  affect such
public offering, then in such event the number of Shares and other securities to
be registered by the Company shall each be proportionally reduced to such number
as shall be  acceptable  to the  managing  underwriter,  subject to Section 6(a)
above.

     (c) Registration Procedures. If and whenever the Company is required to use
its best efforts to effect or cause the registration of any Shares under the Act
as provided in this paragraph 6, the Company will, as expeditiously as possible:

     (i) prepare  and file with the  Securities  and  Exchange  Commission  (the
     "Commission") a registration  statement with respect to such Shares and use
     its best efforts to cause such registration statement to become effective;

     (ii) prepare and file with the Commission  such  amendments and supplements
     to such  registration  statement  and  the  prospectus  used in  connection
     therewith as may be necessary to keep such registration statement effective
     for such period not  exceeding  twenty-four  (24) months from the effective
     date of such registration  statement as may be necessary to comply with the
     provisions of the Act with respect to the disposition of all Shares covered
     by such  registration  statement  during such period in accordance with the
     intended  methods of disposition by the seller or sellers thereof set forth
     in such registration statement;

     (iii)  furnish to each  seller of such Shares such number of copies of such
     registration  statement and of each such amendment and  supplement  thereto
     (in each  case  including  all  exhibits),  such  number  of  copies of the
     prospectus  included  in  such  registration   statement   (including  each
     preliminary  prospectus  and,  if any seller  shall so  request,  a summary
     prospectus), in conformity with the requirements of the Act, and such other
     documents, as such seller may reasonably request in order to facilitate the
     disposition of the Shares owned by such seller;

     (iv) use its best  efforts to  register or qualify  such Shares  covered by
     such registration statement under such other securities or blue sky laws of
     such jurisdictions as each seller shall reasonably request and as agreed to
     by the  Corporation,  and do any and all other acts and things which may be
     reasonably  necessary or advisable to enable such seller to consummate  the
     disposition in such jurisdictions of the Shares owned by such seller; and

     (v) notify  each  seller of any such  Shares  covered by such  registration
     statement, at any time when a prospectus relating thereto is required to be
     delivered  under the Act within the period  mentioned in subdivision (b) of
     this paragraph 6(c), of the happening of any event as a result of which the
     prospectus  included  in such  registration  statement,  as then in effect,
     includes  an  untrue  statement  of a  material  fact or omits to state any
     material  fact  required  to be stated  therein  or  necessary  to make the
     statements  therein not misleading in the light of the  circumstances  then
     existing, and at the request of any such seller prepare and furnish to such
     seller a reasonable  number of copies of a supplement to or an amendment of
     such prospectus as may be necessary so that, as thereafter delivered to the
     purchasers  of such  Shares,  such  prospectus  shall not include an untrue
     statement of a material  fact or omit to state a material  fact required to
     be  stated  therein  or  necessary  to  make  the  statements  therein  not
     misleading in the light of the circumstances then existing.

     (d)  Registration   Expenses.   All  expenses  incident  to  the  Company's
performance  of  or  compliance  with  this  paragraph  6,  including,   without
limitation,  all  registration  and filing fees,  fees and expenses of complying
with securities or blue sky laws,  printing  expenses and fees and disbursements
of counsel for the Company and of independent pubic  accountants,  but excluding
underwriting  commissions and discounts,  the fees of any counsel engaged by the
holder or holders,  and any filing  fees  associated  with  shares of  Preferred
Stock, but not Common Stock, being listed with a national securities exchange or
quoted on the NASDAQ National Market System or Small Cap Market,  shall be borne
by the Company.

          (e)     Indemnification.

     (i) In the event of any  registration  of any Shares under the Act pursuant
     to this  paragraph  6, the Company  will,  to the extent  permitted by law,
     indemnify and hold harmless the seller of such Shares and each  underwriter
     of such securities and each other person,  if any, who controls such seller
     or underwriter  within the meaning of the Act, against any losses,  claims,
     damages,  or  liabilities,  joint or  several,  to  which  such  seller  or
     underwriter  or  controlling  person may become  subject,  under the Act or
     otherwise,  insofar as such losses,  claims,  damages,  or liabilities  (or
     actions in respect  thereof)  arise out of or are based upon (x) any untrue
     statement or alleged untrue  statement of any material fact  contained,  on
     the effective date thereof, in any registration  statement under which such
     securities  were registered  under the Act, any  preliminary  prospectus or
     final prospectus contained therein, or any amendment or supplement thereto,
     or (y) any omission or alleged  omission to state  therein a material  fact
     required to be stated therein or necessary to make the  statements  therein
     not  misleading;  and the Company will  reimburse such seller and each such
     underwriter  and each such  controlling  person  for any legal or any other
     expenses  reasonably  incurred by them in connection with  investigating or
     defending any such loss, claim, damage, liability, or action, provided that
     the  Company  shall not be liable in any such case to the  extent  that any
     such loss,  claim,  damage,  or liability arises out of or is based upon an
     untrue  statement  or  alleged  untrue  statement  or  omission  or alleged
     omission  made  in  such  registration  statement,   any  such  preliminary
     prospectus, final prospectus,  amendment or supplement in reliance upon and
     in conformity with written information  furnished to the Company through an
     instrument duly executed by such seller or underwriter specifically for use
     in the preparation thereof.

     (ii) The Company may require, as a condition to including any Shares in any
     registration  statement  filed pursuant to paragraph 6(c), that the Company
     shall have received an undertaking  satisfactory to it from the prospective
     seller  of such  Shares  and  from  each  underwriter  of such  Shares,  to
     indemnify  and hold  harmless (in the same manner and to the same extent as
     set forth in paragraph 6(e)(i)) the Company,  each director of the Company,
     each officer of the Company who shall sign such

     registration  statement and any person who controls the Company  within the
     meaning of the Act,  with respect to any  statement  or omission  from such
     registration  statement,  any  preliminary  prospectus or final  prospectus
     contained  therein,  or  any  amendment  or  supplement  thereto,  if  such
     statement  or omission  was made in reliance  upon and in  conformity  with
     written  information  furnished to the Company  through an instrument  duly
     executed  by  such  seller  or  underwriter  specifically  for  use  in the
     preparation of such registration statement,  preliminary prospectus,  final
     prospectus, amendment, or supplement.

     (iii)  Promptly  after  receipt  by an  indemnified  party of notice of the
     commencement  of any action  involving a claim referred to in the preceding
     subparagraphs  of this paragraph  6(e), such  indemnified  party will, if a
     claim in respect thereof is to be made against an indemnifying  party, give
     written notice to the latter of the  commencement of such action,  provided
     that the  failure  of any  indemnified  party to give  notice  as  provided
     therein shall not relieve the indemnifying  party of its obligations  under
     the preceding  subdivisions of this paragraph 6(e). In case any such action
     is brought against an indemnified  party,  the  indemnifying  party will be
     entitled to participate in and to assume the defense thereof,  jointly with
     any other  indemnifying  party similarly notified to the extent that it may
     wish, with counsel  reasonably  satisfactory to such indemnified party, and
     after notice from the indemnifying  party to such indemnified  party of its
     election so to assume the defense thereof the  indemnifying  party will not
     be  liable  to such  indemnified  party  for any  legal or  other  expenses
     subsequently incurred by the latter in connection with the defense thereof.
     No  indemnifying  party,  in the  defense of any such claim or  litigation,
     shall, except with the consent of each indemnified party,  consent to entry
     of any judgment or enter into any  settlement  which does not include as an
     unconditional  term thereof the giving by the claimant or plaintiff to such
     indemnified  party of a release from all liability in respect to such claim
     or litigation.

     7.     Redemption Rights.

          (a) Company's  Redemption Option.  Except for any redemption which the
Company would be prohibited  from effecting  under  applicable law, and provided
the shares of  Preferred  Stock of a holder have not earlier  been  converted in
accordance  with the  provisions  hereof,  the shares of Preferred  Stock may be
redeemed by the Company,  in whole or in part, at the option of the Company upon
written  notice by the  Company to the  holders of  Preferred  Stock at any time
after  December 1, 2001,  in the event that the  Preferred  Stock of one or more
holders has not been  converted  pursuant to the terms  hereof on or before such
date.  The Company  shall redeem each share of  Preferred  Stock of such holders
within  thirty (30) days of the  Company's  delivery of the above notice to such
holders and such holders shall surrender the  certificate(s)  representing  such
shares of Preferred Stock. For any partial  redemptions the Company shall redeem
shares in proportion to the number of shares held by each holder. The redemption
amount shall be One Dollar and  Seventy-five  Cents  ($1.75) per share,  plus in
each case  accrued and unpaid  dividends  thereon to the date of payment of such
amount (the total sum so payable on any such redemption being herein referred to
as the "redemption price").

     (b) Redemption Notice.  Notice of any redemption pursuant to this paragraph
7 shall be mailed to the party or parties required to receive such notice at the
principal  office or  residence  address  for such party or  parties.  Each such
notice shall  state:  (1) the  election of the  redemption  option and the facts
which give rise to such option;  and (2) the number of shares of Preferred Stock
which are being elected to be redeemed. From and after the date of the Company's
payment of the  redemption  price to such holder or holders in  accordance  with
such  redemption  notice  (the  "redemption  date"),  notwithstanding  that  any
certificates for such shares shall not have been  surrendered for  cancellation,
the shares represented thereby shall no longer be deemed outstanding, the rights
to receive dividends and distributions  shall cease to accrue from and after the
redemption  date,  and all  rights of such  holder or  holders  of the shares of
Preferred Stock as a stockholder of the Corporation with respect to such shares,
shall cease and terminate.

     8. Special rights. So long as, but only so long as, the shares of Preferred
Stock are held by WEDGE Energy Services,  L.L.C.,  a Delaware limited  liability
company  ("WEDGE"),  or by an affiliate of WEDGE  (collectively  "Holder"),  the
shares of Preferred Stock shall have the following special rights:

          (a)     Right of Participation.

     (i) Grant of Right of Participation. The Company hereby grants the Holder a
right of participation  to participate in any additional  equity offerings which
the Company may offer, up to the Holder  Percentage (as defined  below),  on the
following  terms and  conditions.  In the event that the Company has  received a
bona fide offer  (which the  Company  desires  to  accept)  with  respect to the
issuance of any equity securities (including,  without limitation, any common or
preferred stock, any options  (excluding the Company's 1993 Stock Option Plan or
any future  employee stock option plan approved by the Company's  shareholders),
warrants,  rights, unsecured convertible notes, convertible debentures, or other
convertible  securities),  the Company  shall  immediately  give written  notice
thereof (the  "Notice") to the Holder of the Preferred  Stock.  The Notice shall
state  the name of the party  proposing  to  provide  the  offering  and all the
pertinent  terms and conditions of such  offering.  This right shall expire upon
the later to occur of the  following:  (a) the  conversion  by the Holder of the
Preferred Stock into Common Stock,  or (b) the tenth  anniversary of the date of
the filing of this Statement.

               (ii) Procedure. The Holder shall have fourteen (14) days from the
date the Notice was given to  indicate  to the  Company,  in  writing,  that the
Holder  undertakes to participate in the offering under the terms and conditions
set  forth in the  Notice.  If the  Holder  undertakes  to  participate  in such
offering, then the Company shall be obligated to accept such participation up to
the Holder  Percentage upon the terms and conditions set forth in the Notice and
the parties  shall use their best efforts to enter into a  definitive  agreement
relating to such offering.  In the event that the Holder declines to participate
in such offering,  the Company shall have the right to accept such offering from
the third party  without  participation  by the Holder  provided that it does so
upon the terms and  conditions  set forth in the Notice.  In the event that such
offering is not consummated within sixty (60) days after the date the Notice was
given,  the Company shall not consummate  such offering  without again complying
with this subparagraph 8(a)(ii).

               (iii) Holder  Percentage.  For purposes hereof,  the term "Holder
Percentage" shall mean that percentage calculated,  on a fully diluted basis, as
if the Holder had (a)  converted the  Preferred  Stock into Common Stock,  which
number shall constitute the numerator, and (b) divided by the denominator, which
shall be equal to the  total  number  of  shares  of  Common  Stock  issued  and
outstanding  as of such  date,  plus (i) that  number of shares of Common  Stock
issuable  upon the  conversion  of all  convertible  securities  of the Company,
including,  without  limitation,  the Preferred  Stock,  and (ii) that number of
shares of Common  Stock  issuable  upon the exercise of all options and warrants
utilizing the "treasury method" as of such date. Under the treasury method, only
shares  issuable  upon the  exercise of "in the money"  options and warrants are
considered  in the  calculation  and the net  dilution  is that number of shares
issuable  upon such  exercise net of that number of shares which could have been
purchased with the proceeds from the exercise of the options and warrants at the
then market price.  For example,  assuming  100,000 options are outstanding at a
strike price of $1.00 per share and that the market price of the Common Stock is
$2.50 per share,  under the treasury  method,  the proceeds from the exercise of
the options would equal $100,000 and such proceeds would purchase  40,000 shares
of Common  Stock at the market  price of $2.50 per share.  The net  dilution  is
60,000  shares,  which  number of shares is utilized in the  calculation  of the
Holder Percentage under the above formula.

          (b) Restriction on Payment of Cash Dividends and Interest. The Company
agrees that so long as the Holder owns shares of Preferred Stock representing at
least ten percent (10%) of the shares of capital stock of the Company on a fully
diluted  basis  utilizing  the  "treasury  method" as described in  subparagraph
8(a)(iii) above, it shall not pay any cash dividends or any interest accruals on
any equity security or any debt security (excluding any Superior Indebtedness as
defined in that certain Debenture Agreement dated December 10, 1999, between the
Company and WEDGE (the "Debenture Agreement") on file at the Company's principal
office),  in  existence  as of the date hereof or created  hereafter  unless and
until the Company's earnings before deduction of interest,  taxes,  depreciation
and  amortization  ("EBITDA")  for the six (6) months ended with the quarter for
the last  quarterly  report  which the  Company is  required to furnish to WEDGE
under  Section  4.01  of the  Debenture  Agreement  are  more  than  125% of the
Company's  obligations  for all  dividends  and  interest due and payable on all
outstanding securities of the Company as of such time.

     (c) Prohibition  Against Capital  Expenditures.  The Company agrees that so
long as Holder owns shares of Preferred Stock  representing at least ten percent
(10%) of the shares of capital  stock of the  Company on a fully  diluted  basis
utilizing the "treasury  method" as described in subparagraph  8(a)(iii)  above,
the Company will not incur, or commit to incur, any capital  expenditures of any
kind or nature  in  excess  of  $50,000  without  the  approval  by the Board of
Directors of the Company,  and, in addition,  the Company agrees that, until the
Company  has  expended  the  $2,500,000  in  proceeds  from the  issuance of the
Debenture,  from the date hereof there shall be no capital expenditure in excess
of $50,000 without the affirmative written consent of WEDGE or its affiliate.

     9.  Exclusion of Other Rights.  Except as may otherwise be required by law,
the  shares of  Preferred  Stock  shall not have any  preferences  or  relative,
participating,  optional or other special rights,  other than those specifically
set forth in this  resolution  (as such  resolution  may be amended from time to
time) and in the  Corporation's  Certificate  of  Incorporation.  The  shares of
Preferred Stock shall have no preemptive or subscription rights.

     10. Severability of Provisions.  If any right,  preference or limitation of
the Preferred  Stock set forth in this  resolution  (as such  resolution  may be
amended from time to time) is invalid,  unlawful or incapable of being  enforced
by reason of any rule or law or public policy, all other rights, preferences and
limitations  set forth in this  resolution  (as so  amended)  which can be given
effect  without the invalid,  unlawful or  unenforceable  right,  preference  or
limitation  herein set forth shall be deemed  enforceable and not dependent upon
any other such right, preference or limitation unless so expressed herein.

     11. Status of Reacquired Shares.  Shares of Preferred Stock which have been
issued and reacquired in any manner shall (upon  compliance  with any applicable
provisions of the laws of the State of Texas) have the status of authorized  and
unissued shares of Preferred Stock issuable in series  undesignated as to series
and may be redesignated and reissued. [END]


<PAGE>

















- ------------------------------------------------------------------------------
                               Front of Card

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

                           COMMON STOCK PROXY

                    TGC INDUSTRIES, INC. (the "Company")
         Proxy Solicited on Behalf of the Board of Directors for the

                 Annual Meeting of Shareholders, May 11, 2000

     The undersigned hereby appoint(s) Allen T. McInnes or Wayne A.
Whitener, each with full power of substitution, as proxies, to vote all
Common Stock in TGC Industries,  Inc. which the undersigned would be entitled to
vote on all matters that may come before the Annual Meeting of the  Shareholders
of the Company, to be held on May 11, 2000, and any adjournments thereof.

     THE PROXY,  WHEN PROPERLY  EXECUTED,  WILL BE VOTED IN THE MANNER  DIRECTED
HEREIN BY THE UNDERSIGNED  SHAREHOLDER.  IF NO DIRECTION IS MADE THIS PROXY WILL
BE VOTED FOR PROPOSALS 1, 2, AND 3.

                          (Continued on other side)


<PAGE>





- ------------------------------------------------------------------------------
                                   Back of Card

- ------------------------------------------------------------------------------
                                 COMMON STOCK PROXY

/X/  Please mark your
     votes as in this

     example.

              The Board of Directors recommends a vote FOR each of the following
              items:

1.  ELECTION OF DIRECTORS OF THE COMPANY.

  ______  FOR all nominees   ______ Withhold authority  Nominees:
          listed at right           to vote for all     Allen T. McInnes
          (except as marked         nominees listed     Wayne A. Whitener
           to the contrary          at right            William J. Barrett
           as indicated below)                          Herbert M. Gardner
                                                        Edward L. Flynn
                                                        William H. White
                                                        Pasquale V. Scaturro

INSTRUCTIONS:   To withhold authority to vote for any
                individual nominee, vote for all
                nominees and strike a line through
                the individual nominee's name listed
                at right.

2. APPROVAL OF THE COMPANY'S 1999 STOCK OPTION PLAN.

          _____ FOR    _____ AGAINST    _____ ABSTAIN

3. RATIFICATION OF SELECTION OF GRANT THORNTON LLP AS INDEPENDENT AUDITORS.

          _____ FOR    _____ AGAINST     _____ ABSTAIN


Returned proxy forms when properly  executed will be voted:  (1) as specified on
the matters listed above; (2) in accordance with the Directors'  recommendations
where a choice is not specified;  and (3) in accordance with the judgment of the
proxies on any other matters that may properly come before the meeting.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE CARD PROMPTLY.

Signature(s) _____________________________________    Date:______________

Note:  Executors, trustees and others signing in a representative capacity
should include their names and capacity in which they sign.  PLEASE DATE
AND SIGN AS SHOWN HERE AND MAIL PROMPTLY IN THE ENCLOSED ENVELOPE.


<PAGE>
















- ------------------------------------------------------------------------------
                               Front of Card

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

                           PREFERRED STOCK PROXY

                    TGC INDUSTRIES, INC. (the "Company")
         Proxy Solicited on Behalf of the Board of Directors for the

                 Annual Meeting of Shareholders, May 11, 2000

     The undersigned  hereby  appoint(s)  Allen T. McInnes or Wayne A. Whitener,
each with full power of substitution, as proxies, to vote all Preferred Stock in
TGC  Industries,  Inc.  which the  undersigned  would be entitled to vote on all
matters  that may come  before the Annual  Meeting  of the  Shareholders  of the
Company, to be held on May 11, 2000, and any adjournments thereof.

     THE PROXY,  WHEN PROPERLY  EXECUTED,  WILL BE VOTED IN THE MANNER  DIRECTED
HEREIN BY THE UNDERSIGNED  SHAREHOLDER.  IF NO DIRECTION IS MADE THIS PROXY WILL
BE VOTED FOR PROPOSALS 1, 2, 3 and 4.

                          (Continued on other side)


<PAGE>


- ------------------------------------------------------------------------------
                                    Back of Card

- ------------------------------------------------------------------------------
                                 PREFERRED STOCK PROXY

/X/  Please mark your
     votes as in this

     example.

              The Board of Directors recommends a vote FOR each of the following
              items:

1.  ELECTION OF DIRECTORS OF THE COMPANY.

  ______  FOR all nominees   ______ Withhold authority  Nominees:
          listed at right           to vote for all     Allen T. McInnes
          (except as marked         nominees listed     Wayne A. Whitener
           to the contrary          at right            William J. Barrett
           as indicated below)                          Herbert M. Gardner
                                                        Edward L. Flynn
                                                        William H. White
                                                        Pasquale V. Scaturro

INSTRUCTIONS:   To withhold authority to vote for any
                individual nominee, vote for all
                nominees and strike a line through
                the individual nominee's name listed
                at right.

2. APPROVAL OF THE COMPANY'S 1999 STOCK OPTION PLAN.

          _____ FOR    _____ AGAINST    _____ ABSTAIN

3. RATIFICATION OF SELECTION OF GRANT THORNTON LLP AS INDEPENDENT AUDITORS.

          _____ FOR    _____ AGAINST     _____ ABSTAIN

4.   CONSENT TO A NEW SERIES OF 8-1/2% SENIOR  CONVERTIBLE  PREFERRED  STOCK (By
     vote of the holders of the Company's outstanding Preferred Stock,

      voting as a class).

          _____ FOR    _____ AGAINST     _____ ABSTAIN

Returned proxy forms when properly  executed will be voted:  (1) as specified on
the matters listed above; (2) in accordance with the Directors'  recommendations
where a choice is not specified;  and (3) in accordance with the judgment of the
proxies on any other matters that may properly come before the meeting.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE CARD PROMPTLY.

Signature(s) _____________________________________    Date:______________

Note:  Executors, trustees and others signing in a representative capacity
should include their names and capacity in which they sign.  PLEASE DATE
AND SIGN AS SHOWN HERE AND MAIL PROMPTLY IN THE ENCLOSED ENVELOPE.

161421.1


<PAGE>



                              Law, Snakard & Gambill, P.C.
                           500 Throckmorton Street, Suite 3200
                                Fort Worth, Tx  76102



April 3, 2000

U.S. Securities & Exchange Commission
Attn:  Mr. Mark Webb
Washington, D.C  20549

                           Re:   TGC Industries, Inc.

Dear Mr. Webb:

     As we discussed in our telephone  conference earlier this week, enclosed is
an Amended  Preliminary Proxy Statement of TGC Industries,  Inc. ("TGC") for the
annual meeting of shareholders to be held May 11, 2000. This document amends the
preliminary proxy statement filed in February.

The  principal  revisions  contained in this  Amendment  are: (1) As required by
applicable rules, the  incorporation by reference of TGC's financial  statements
from its Annual Report for the year ended  December 31, 1999;  (2) the update of
the  beneficial  ownership  section;  and (3) the  inclusion of  information  on
management,  including executive compensation, as required for an annual meeting
proxy. As we discussed, the original Preliminary Proxy was for a special meeting
of shareholders which was rescheduled for the annual meeting.

     Your expedited review would be very much appreciated as TGC intends to mail
the Proxy  Statement as early as April 7, 2000.  Please call the  undersigned at
817-626-8997  as soon as you have  completed  your  review.  Thank  you for your
assistance in this matter.

Sincerely,

/s/ VERNON E. REW, JR.
Vernon E. Rew, Jr.


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