Document:

exv10w1

 

Exhibit 10.1

WESTERN NATIONAL BANK

508 WEST WALL STREET, SUITE 1100

MIDLAND, TEXAS

79701

January 18, 2008

Dawson Geophysical Company

508 West Wall Street, Suite 800

Midland, Texas 79701

	 	 	 	 	 
	 

	 	RE:
	 	Revolving Line of Credit Loan from Western National Bank to Dawson Geophysical
Company

Gentlemen:

Pursuant to the terms of a letter loan agreement, dated as of January 18, 2007, as amended by that
certain First Amendment to Loan Agreement, dated as of August 30, 2007, and as further amended
further by that certain Second Amendment to Loan Agreement, dated as of October 12, 2007 (as so
amended, the “Existing Loan Agreement”), Western National Bank, a national banking association
(alternatively, “Western” or the “Bank”), has previously committed to provide to Dawson Geophysical
Company, a Texas corporation (alternatively, “Dawson Geophysical” or the
“Borrower”), a revolving line of credit loan in the original principal amount of Twenty Million and
No/Dollars ($20,000,000.00) (the Existing Loan”). The Existing Loan is evidenced by a Revolving
Line of Credit Note, also dated as of January 18, 2007, executed by the Borrower on behalf of
Western, in the original principal amount of Twenty Million and No/100 Dollars ($20,000,000.00)
(the “Existing Note”). The Existing Note is secured by that certain Security Agreement, also dated
as of January 18, 2007, covering those accounts receivable described therein (the “Existing
Security Agreement”). From time to time, the Security Agreement, and any financing statements filed
to perfect the security interest created thereunder, may be collectively referred to herein as the“
Existing Security Instruments”.

Borrower has now requested that Western renew and extend the Existing Loan into a new revolving
line of credit loan in the original principal amount of Twenty Million and No/100
Dollars($20,000,000.00) (the “Loan”). The Loan will be evidenced by a Revolving Line of Credit
Note, of even date herewith, executed by the Borrower in favor of Western, in the original
principal amount of Twenty Million and No/100 Dollars ($20,000,000.00), which will renew and extend
the Existing Note (the “Note”). The Borrower’s performance under the Note will be secured by its
execution of a new Security Agreement, of even date herewith, the security interest of which will
be perfected by the filing of amendments to the financing statement, with all covering the accounts
receivable described therein (collectively, the “Security Instruments”). This Agreement, as defined

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below, the Note, the Security Instruments, and any other documents executed simultaneously herewith
are collectively referred to as the “Loan Documents”.

Western has agreed to renew the Existing Loan into the Loan. In consideration of Western’s renewal
of the Existing Loan into the Loan, Borrower has agreed to execute this Loan Agreement, the Note,
and the Security Agreement required by the Bank, subject to the fulfillment of the following terms
and conditions of this letter loan agreement (the “Agreement”):

I. TERMS

Agreement

This Agreement, dated as of January 18, 2008, and any extensions, renewals, or modifications
hereof.

Borrower

Dawson Geophysical Company

Bank

Western National Bank

Commitment

The lesser of the following amounts: (a) the face amount of the Note; or (b) the Borrowing Base
then in effect.

Rate

From the date of this Agreement through January 31, 2008, interest under the Note shall accrue at
an annual rate equal to five and sixty-three one-hundredths percent (5.63%). Beginning as of
February 1, 2008, interest under the Note shall accrue at an annual rate equal to either: (a) the
30-day London Interbank Offered Rate (“LIBOR”), plus two and one-quarter percent (2.25%), or (b)
the Prime Rate, minus three-quarters percent (.75%), as the Borrower shall choose monthly by
notifying the Bank in writing, via facsimile or e-mail, by the last day of each month, with each
change to be effective as of the first day of the following month, provided that such interest rate
shall not exceed the Highest Lawful Rate, as defined in the Note. Should Borrower fail to notify
Bank of its election of interest rate for any given month, the interest rate shall remain at the
interest rate index chosen by Borrower for the immediately preceding month.

For purposes of this Agreement, LIBOR shall mean, with respect to each Interest Period, as defined
below, the rate as established as the 30-day LIBOR in the money rate table of The Wall Street
Journal, a Dow Jones publication, as of each Business Day, as defined
below (and for holidays or weekends, LIBOR shall be the 30-day LIBOR published in that money rate
table of The Wall Street Journal, as of the close of business on the most recent Business Day
immediately preceding such weekend or holiday). Without notice to the Borrowers or any other
person, LIBOR may change from

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time to time pursuant to the preceding sentence, with the effective date of each change to be the
effective date reflected in the money rate table of The Wall Street Journal. Without notice to the
Borrowers or any other person, LIBOR may change from time to time pursuant to the preceding
sentence, with the effective date of each change to be the effective date reflected in the money
rate table of The Wall Street Journal. Each change in LIBOR to be charged on the Revolver Note will
become effective without notice on the commencement of each Interest Period based upon the Index
then in effect. “Interest Period” means each consecutive one month period (the first of which shall
commence on February 1, 2008), effective as of the first day of each Interest Period and ending on
the last day of each Interest Period, provided that if any Interest Period is scheduled to end on a
date for which there is no numerical equivalent to the date on which the Interest Period commenced,
then it shall end instead on the last day of such calender month. For purposes of this Agreement,
the “Prime Rate” shall be defined as that rate established as the prime rate in the money rate
table of The Wall Street Journal, a Dow Jones publication, as of each Business Day, as hereinafter
defined, (and for holidays or weekends, the Prime Rate shall be the prime rate published in that
money rate table of The Wall Street Journal, as of the close of business on the most recent
Business Day immediately preceding such weekend or holiday). Without notice to the Borrower or any
other person, the Prime Rate may change from time to time pursuant to the preceding sentence, with
the effective date of each change to be the effective date reflected in the money rate table of The
Wall Street Journal. The Prime Rate is a reference rate and does not necessarily represent the
lowest or best rate actually charged to any customer. The Bank may make commercial loans or other
loans at rates of interest at, above, or below the Prime Rate. “Business Day” shall mean any day
other than a Saturday, Sunday or legal holiday for commercial banks under the laws of the State of
Texas.

Security

The Loan shall be secured by the Security Instruments.

Structure

Under the Note, funds will be available on a revolving basis through January 18, 2009, the maturity
date of the Loan (the “Revolving Period”). During the Revolving Period, the Borrower may borrow,
repay, and re-borrow funds as long as the aggregate amount (including outstanding letters of
credit) does not exceed the Commitment.

Borrowing Base

At any time, and from time to time, the amounts outstanding under the Revolver Note shall not
exceed the lesser of: (a) the face amount of the Revolver Note; or (b) the Borrowing Base, as
determined from time to time by the Bank, acting in its sole and unlimited discretion (said lesser
amount being referred to herein as the “Revolver Commitment”). As used in this Agreement, the term
“Borrowing Base” shall mean an amount equal to percentages stated below of the Borrower’s Eligible
Accounts.

For the purposes of this Agreement, the term “Eligible Account” shall mean an account receivable of
the Borrower (net of any credit balance, trade discount, or unbilled amount or retention) that is
contractually due, for which each of the following statements is accurate and complete (and the

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Borrower, by including such account receivable in any computation of the Borrowing Base, shall be
deemed to represent and warrant to the Bank the accuracy and completeness of such statements):

	 	a.	 	Said account receivable is a binding and valid obligation of the obligor thereon, in
full force and effect, and enforceable in accordance with its terms;
	 
	 	b.	 	Said account receivable is genuine, in all respects, as appearing on its face as
represented in the books and records of Borrower, and all information set forth therein is
true and correct;
	 
	 	c.	 	Said account receivable is free of all default of any party thereto, counterclaims,
offsets, and defenses, and from any rescission, cancellation, or avoidance, and all right
thereof, whether by operation of law or otherwise;
	 
	 	d.	 	The payment of said account receivable is not more than ninety (90) days past due the
invoice date thereof;
	 
	 	e.	 	Said account receivable is free of concessions or understandings with the obligor
thereon of any kind not disclosed to and approved by the Bank in writing;
	 
	 	f.	 	Said account receivable is, and at all times will be, free and clear of all liens except
those in favor of the Bank;
	 
	 	g.	 	Said account receivable is not a receivable arising from intercompany indebtedness
existing between or among any of the Borrower;
	 
	 	h.	 	Said account receivable is derived from sales made or services rendered to the obligor
in the ordinary course of the business of the Borrower;
	 
	 	i.	 	The obligor on said account receivable (i) is located within the United States or the
District of Columbia; (ii) is not the subject of any bankruptcy or insolvency proceeding,
nor has a trustee or receiver been appointed for all or a substantial part of its property,
nor has said obligor made an assignment for the
benefit of creditors, admitted its inability to pay its debts as they mature or suspended
its business, (iii) is not affiliated, directly or indirectly, with Borrower, as a
subsidiary or affiliate, employee or otherwise; and (iv) is not a state or federal
government department, commission, board, bureau, or agency;
	 
	 	j.	 	Said account receivable is not owed by a customer whose principal place of business is
located in a foreign country; and
	 
	 	k.	 	Said account receivable did not arise from sales to an obligor as to whom fifteen
percent (15%) or more of the total accounts receivable owing by such obligor to the
Borrower are delinquent accounts receivable (that is, an account that is more than ninety
(90) days delinquent).

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In addition to the criteria stated above for determining whether an account receivable is an
“Eligible Account”, the Bank and the Borrower agree that no such account receivable shall
constitute an Eligible Account if that account receivable arises from any single customer, other
than Client A and its affiliates and subsidiaries (collectively,
“Client A”), whose accounts receivable constitute more than twenty-five percent (25%) of
Borrower’s total accounts receivable. The Bank agrees that an account receivable owed by Client A to the Borrower (collectively, the “Client A Accounts”) may still qualify as an
Eligible Account even if the Client A Accounts constitute more than twenty-five percent (25%) of
Borrower’s total accounts receivable.

As used in the Existing Loan Agreement, as amended by this Amendment, at such time as the Client A Accounts constitute more than twenty-five percent (25%) of the Borrower’s total accounts
receivable, the term “Borrowing Base” shall mean an amount equal to the sum of the following: (A)
seventy-five percent (75%) of all of the Borrower’s Eligible Accounts owed by customers other than Client A (collectively, the “Third Party Accounts”); and (B) thirty-five percent (35%) of all of
the Borrower’s Client A Accounts. If at any time, the Client A Accounts constitute less than
twenty-five percent (25%) of the Borrower’s total accounts receivable, the term “Borrowing Base”
shall mean an amount equal to seventy-five percent (75%) of the Borrower’s Eligible Accounts,
including both the Client A Accounts and the Third Party Accounts. Borrower agrees that all
accounts receivable reports and financial statements submitted by the Borrower to the Bank
following the execution of this Amendment shall separately report the Client A Accounts and the
Third Party Accounts, and each set of such accounts receivable shall be stated both as dollar
amounts and as percentages of the total accounts receivable owed to Borrower.

Based upon the terms of this Amendment, and the information provided and the representations made
by the Borrower to the Bank, the Bank hereby redetermines the Borrowing Base, and increases it to
the amount of Twenty Million and No/100 Dollars ($20,000,000.00). The Borrower may request in
writing an additional increase in the Borrowing Base, such request to be accompanied by a
description and evaluation of any additional collateral to be provided by the Bank. The Bank may
evaluate such for an
increase in its sole and absolute discretion, and in conjunction with such evaluation, may conduct
a full credit analysis of the Borrower and the existing or additional collateral.

If the aggregate amounts outstanding under the Note exceeds the Revolver Commitment at any time,
the Bank will provide written notice of that event to Borrower. On or
before the tenth
(10th) day
following receipt of such notification by Borrower, Borrower will either, at the direction of the
Bank, acting in its sole and absolute discretion: (a) make a mandatory payment to the Bank of the
principal of the Note in an amount at least equal to the amount necessary to cause the outstanding
principal balance of the Note to be less than or equal to the Revolver Commitment; or (b) create
liens on other assets of Borrower, satisfactory in nature, quantity, and value to the Bank, acting
in its sole discretion, said assets to have a fair market value sufficient to at least equal to the
amount necessary to cause the outstanding principal balance of the Note to be less than or equal to
the Revolver Commitment.

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Non-Recourse

Although the Borrower is responsible on a corporate basis for the full repayment of principal and
interest due on the Obligations and for any other Event of Default for which the Borrower is
responsible, the Bank specifically acknowledges and agrees that neither any of the directors,
officers, or employees of the Borrower nor any of the Borrower’s shareholders shall have any
personal liability whatsoever for the repayment of the Loan. The sole party responsible for
repayment of the Loan shall be the Borrower, and the sole security for the Loan shall be the
Collateral covered by the Security Instruments.

Purpose

Funds from the Loan shall be to renew and extend the Existing Loan and to provide working capital
to offset the increase in accounts receivable due to the significant growth in Borrower’s business.
No proceeds from the Loan shall be used for the purpose of purchasing or carrying margin stock in
violation of Regulations G, U, or X of the Board of Governors of the Federal Reserve System.

Maturity Date

As stated, the maturity date of the Note is January 18, 2009.

II. REPRESENTATIONS AND WARRANTIES

     A. Good Standing and Identity. The Borrower is a corporation, duly organized and in good
standing under the laws of Texas. The Borrower’s legal name is that reflected in the address of
this Agreement. Borrower has the power to own its property and to carry on its business in each
jurisdiction in which the Borrower operates.

     B. Authority and Compliance. The Borrower has full power and authority to enter into this
Agreement, to make the borrowing hereunder, to execute and deliver the Note, to mortgage those
interests covered by the Security Instruments, and to incur the obligations provided for herein,
all of which will be duly authorized by all proper and necessary corporate action. No consent or
approval of any public authority is required as a condition to the validity of this Agreement, the
Note, and the Security Instrument, and Borrower is in compliance with all laws and regulatory
requirements to which he is subject.

     C. Litigation. There are no proceedings pending or, to the knowledge of Borrower, threatened
before any court or administrative agency that will or may have a material adverse effect on the
financial condition or operations of Borrower, except as disclosed to the Bank in writing prior to
the date of this Agreement.

     D. Ownership of Assets. As of the date of this Agreement, Borrower has good title to the
interests covered by the Security Instruments and any other collateral pledged and the other
collateral is owned free and clear of liens. Borrower will at all times maintain its tangible
property, real and personal, in good order and repair, taking into consideration reasonable wear
and tear.

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     E. Taxes. All income taxes and other taxes due and payable through the date of this Agreement
have been paid prior to becoming delinquent.

     F. Financial Statements. The books and records of the Borrower properly reflect the financial
condition of the Borrower in all material respects, and there has been no material change in
Borrower’s financial condition as represented in its most recent financial statements.

     G. Hazardous Wastes and Substances. To the best knowledge of the Borrower, the Borrower and
its properties are in compliance with applicable state and federal environmental laws and
regulations and the Borrower is not aware of and has not received any notice of any violation of
any applicable state or federal environmental law or regulation and there has not heretofore been
filed any complaint, nor commenced any administrative procedure, against the Borrower or any of its
predecessors, alleging a violation of any environmental law or regulation. Currently and from time
to time, the Borrower, in the course of its regular business, may use or generate on a portion of
its properties materials which are Hazardous Materials, as hereinafter defined. The Borrower has
and will make a good faith attempt to comply with all applicable statutes and regulations in the
use, generation and disposal of such materials. To the best of its knowledge, the Borrower has not
otherwise installed, used, generated, stored or disposed of any hazardous waste, toxic substance,
asbestos or related material (“Hazardous Materials”) on its properties. For the purposes of this
Agreement, Hazardous Materials shall include, but shall not be limited to, substances defined as
“hazardous substances” or “toxic substances” in the Comprehensive Environmental Response
Compensation and
Liability Act of 1980, as amended, 42 U.S.C. §9061, et seq., Hazardous Materials
Transportation Act, 49 U.S.C. §1802, et seq., and the Resource Conservation and Recovery Act, 42
U.S.C. §6901, et seq., or as “hazardous substances,” “hazardous waste” or “pollutant or
contaminant” in any other applicable federal, state or local environmental law or regulation. There
do not exist upon any property owned by Borrower any underground storage tanks or facilities, and
to the knowledge of Borrower, none of such property has ever been used for the treatment, storage,
recycling, or disposal of any Hazardous Materials.

III. CONDITIONS PRECEDENT

The provisions of this Agreement will serve as the proposed terms of the borrowing arrangements.
Prior to any funds being made available, Borrower will execute and deliver to the Bank, in form and
substance satisfactory to the Bank, this Agreement, the Note, and the Security Instruments.

IV. COVENANTS

Unless the Bank will otherwise consent in writing, and so long as any debt remains outstanding or
the commitment still available, the Borrower agrees to comply with the following covenants:

     A. Affirmative Covenants.

     1. As soon as available, but in any event not later than ninety (90) days after the
end of each fiscal year, Borrower will provide financial statements, in form and substance
satisfactory to the Bank, reflecting Borrower’s financial performance as of the end of such
year and the related statements of income and changes in cash flows for such year, with the

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first fiscal year ending on September 30, 2008, such statements to be audited by an independent
certified accountant and to be prepared according to generally accepted accounting principals,
consistently applied (“GAAP”).

     2. Within ninety (90) days of the end of each fiscal quarter, with the next quarter ending on
December 31, 2007, the Borrower will submit to the Bank a financial statement reflecting Borrower’s
financial performance during the previous calendar quarter, such statements to be reviewed by an
independent certified accountant and to be prepared according to GAAP.

     3. Within thirty (30) days of the end of each calendar month, Borrower shall provide monthly
accounts receivable aging reports.

     4. Within thirty (30) days of transmitting any tax return to any governmental authority, the
Borrower will submit to the Bank a copy of that tax return.

     5. Within thirty (30) days following the end of each calendar month, Borrower shall provide a
monthly borrowing base report and compliance certificate in the form attached hereto as Exhibit
“A”.

     6.
Borrower shall maintain an average Cash Flow Coverage Ratio of not less than 1.50 to 1.0,
calculated quarterly, beginning on December 31, 2007, from the date of the Loan to maturity. For
purposes of this Agreement, “Cash Flow Coverage Ratio” means, with respect to any period of
calculation thereof, the ratio of the sum of: (a) the net income (or loss) from continuing
operations of Borrower during such period calculated after any and all distributions to
shareholders, plus (b) interest, depreciation, depletion, and amortization expenses of Borrower
during such period, less (c) gains from the sale of any assets; plus (d) losses from the sale of
any assets; less (e) extraordinary adjustments to net income divided by (f) scheduled capital lease
obligations and principal and interest payments, all determined in accordance with GAAP.

     7. Borrow shall maintain a Current Ratio of not less than 1.50 to 1.0, measured quarterly,
beginning on December 31, 2007, from the date of the Loan to maturity. For purposes of this
Agreement, “Current Ratio” means, with respect to any period of calculation thereof, the ratio of
the sum of: (a) current assets, plus (b) availability under the Revolver Loan, divided by (c)
current liabilities. Current assets shall include a minimum balance of cash, plus marketable
securities, of not less than $3,500,000.00.

     8. Borrower shall submit copies of all financial statements, reports, notices, and proxy
statements sent or made available generally by the Borrower to its shareholders, of all regular and
periodic reports and all private placement memorandums and all registration statements and
prospectuses, if any, filed by the Borrower with any securities exchange or with the Security
Exchange Commission; and all press releases and other statements made available generally by the
Borrower to the public concerning material changes in the business of the Borrower upon their
becoming available, but in no event later than 10 days after the same was sent.

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     9. Borrower shall maintain a minimum Tangible Net Worth of $40,000,000.00, to be measured
quarterly. “Tangible Net Worth” means the excess, if any, of the total assets of any person over
all items of indebtedness, obligations, or liability which would be classified as liabilities of
that person, for the time period to be measured, each to be determined in accordance with GAAP;
provided, however, that for the purposes of any such computation of Tangible Net Worth, “assets”
will not include (a) goodwill (whether representing the excess of cost over book value of assets
acquired or otherwise), and (b) patents, trademarks, trade names, copyrights, franchises, and
deferred charges.

     10. For any time period for which reporting is required, Borrower will maintain a Debt to
Tangible Net Worth ratio of at least 1.50 to 1.00 to be measured
quarterly. For purposes of this paragraph, “Debt” shall mean, all liabilities, obligations,
and indebtedness of the Borrower, of any kind or nature, now or hereafter owing, arising, due or
payable, howsoever evidenced, created, incurred, acquired or owing, whether primary, secondary,
direct, contingent, fixed, or otherwise, and “Tangible Net Worth” shall have the same meaning set
forth in paragraph (9) above.

     11. Borrower will maintain all primary operating accounts with the Bank.

     12. The Borrower will maintain its existence in good standing and comply with all laws,
regulations and governmental requirements applicable to it or to any of its property, business
operations and transactions.

     13. The Borrower will promptly pay any reasonable costs incurred by the Bank in connection
with the preparation or enforcement of this Agreement, the Notes, the Security Instruments, and any
other documentation executed concurrently herewith.

     14. The Borrower will remain in substantial compliance with same and will not place or permit
to be placed any Hazardous Materials on any of its properties in violation of applicable state and
federal environmental laws. In the event that the Borrower should discover any Hazardous Materials
on any of its properties that could result in a breach of the foregoing covenant, the Borrower
shall notify the Bank within three (3) days after such discovery. The Borrower shall dispose of all
material amounts of Hazardous Materials that it generates only at facilities or with carriers that
maintain valid governmental permits under the Resource Conservation and Recovery Act, 42 U.S.C.
§6901. In the event of any notice or filing of any procedure against the Borrower alleging a
violation of any environmental law or regulation, the Borrower shall give notice to the Bank within
five (5) days after receiving notice of such notice or filing.

     15. The Borrower will provide such other information as the Bank may reasonably request from
time to time in its sole discretion.

B. Negative Covenants.

     1. The Borrower will not make any change in its present accounting method or change its
present fiscal year.

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     2. The Borrower will not make any substantial change in the nature of its business as
now conducted.

     3. The Borrower will not reorganize or merge with any other entity, without the prior
written consent of the Bank.

     4. With respect to the Borrower’s interest in any of the properties covered by the
Security Instrument, the Borrower will not sell, contract to sell,
convey, assign, transfer, mortgage, pledge, hypothecate, encumber, or in any way
alienate that interest in such properties, without the consent of the Bank.

V. EVENTS OF DEFAULT

The occurrence and continuing existence of any one of the following will constitute an Event of
Default under this Agreement and the Note:

     A. Borrower fails to pay when due any principal, interest, or other amount payable under this
Agreement, the Note, or any other promissory notes executed or guaranteed by the Borrower in favor
of the Bank;

     B. Any representation or warranty made by the Borrower hereunder or in any related collateral
security or other documents entered into with the Bank proves to be at any time incorrect in any
significant respect;

     C. The Borrower fails to observe or perform any covenant, obligation, agreement, or other
provision contained herein or in any other contract or instrument executed in connection herewith;

     D. Any default or defined Event of Default under any security agreement, deed of trust,
promissory note, loan agreement or other contract or instrument executed by the Borrower pursuant
to, or as required by, this Agreement;

     E. Any final judgment or judgments for the payment of money is rendered against Borrower and
is not be satisfied or discharged at least thirty (30) days prior to the date on which any of their
assets could be lawfully sold to satisfy such judgment or judgments, unless Borrower brings
litigation to stay same; or

     F. Borrower: (i) becomes insolvent, or suffers or consents to, or applies for the appointment
of a receiver, trustee, custodian or liquidator for himself or any of his property, or generally
fails to pay his debts as they become due, or makes a general assignment for the benefit of
creditors; or (ii) files a voluntary petition in bankruptcy, or seeking reorganization, in order to
effect a plan or other arrangement with creditors or any other relief under the Bankruptcy Reform
Act, Title 11 of the United States Code, as recodified from time to time (“Bankruptcy Code”), or as
now or hereafter in effect, or any involuntary petition or proceeding pursuant to said Bankruptcy
Code or any other applicable state or federal law relating to bankruptcy or reorganization or other

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relief for debtors is filed or commenced against Borrower; or (iii) files any answer admitting the
jurisdiction of the court and the material allegations of any such involuntary petition; or (iv) is
adjudicated a bankrupt, under said Bankruptcy Code or any other state or federal law relating to
bankruptcy, reorganization, or other relief for debtors.

VI. REMEDIES

If any Event of Default occurs, any term hereof or of the Note to the contrary notwithstanding, the
Note shall at the Bank’s option become immediately due and payable. In addition, the obligation, if
any, of the Bank to permit further borrowings hereunder will immediately cease and terminate and
the Bank will have all rights, powers, and remedies available under this Agreement, the Note, or
other contracts or instruments executed in connection herewith, or accorded by law, including,
without limitation, the right to resort to any or all of the collateral and to exercise any or all
of its rights, powers, or remedies at any time and from time to time after the occurrence of an
Event of Default.

ONCE AN EVENT OF DEFAULT HAS OCCURRED, WESTERN MAY PURSUE THE REMEDIES PROVIDED FOR IN THIS
AGREEMENT, THE NOTE, AND THE SECURITY INSTRUMENTS WITHOUT PRESENTMENT, DEMAND, PROTEST, NOTICE OF
ACCELERATION, NOTICE OF INTENT TO ACCELERATE, NOTICE OF PROTEST OR NOTICE OF DISHONOR, OR ANY OTHER
NOTICE OF ANY KIND, ALL OF WHICH ARE EXPRESSLY WAIVED BY BORROWER.

All rights, powers, and remedies of the Bank in connection with this Agreement, the promissory
notes or any other contract or instrument on which the Borrower may at any time be obligated to the
Bank (or any holder thereof) are cumulative and not exclusive and will be in addition to any other
rights, powers, or remedies provided by law or equity, including without limitation the right to
set off any liability owing by the Bank to the Borrower (including sums deposited in any deposit
account of Borrower with the Bank) against any liability of the Borrower to the Bank.

VII. WAIVER

No delay, failure, or discontinuation by the Bank, or any holder of the Note, in exercising any
right, power, or remedy under this Agreement, the Note or any other contract or instrument on which
the Borrower may at any time be obligated to the Bank (or any holder thereof) will affect or
operate as waiver of such right, power or remedy. Any waiver, permit, consent, or approval of any
kind by the Bank (or any holder of the Note), or of any provisions or conditions of, or any breach
or default under this Agreement, the Note or any other contract or instrument on which the Borrower
may at any time be obligated, must be in writing and will be effective only to the extent set forth
in such writing.

VIII. NOTICES

All notices, requests, and demands given to or made upon the respective parties must be in writing
and shall be deemed to have been given or made: (1) at the time of personal delivery thereof, (2)
or

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two days after any of the same are deposited in the U.S. Mail, first class and postage prepaid,
addressed as follows:

	 	 	 	 	 
	 

	 	Borrower:
	 	Dawson Geophysical Company
	 

	 	 	 	508 West Wall Street, Suite 800
	 

	 	 	 	Midland, Texas 79701
	 
	 	 	 	 
	 

	 	Western:
	 	Western National Bank
	 

	 	 	 	Attention: James R. Kreuz
	 

	 	 	 	508 West Wall Street, Suite 1100
	 

	 	 	 	Midland, Texas 79701

or other such address as any party may designate by written notice to all other parties.

IX. SUCCESSORS, ASSIGNMENTS

This Agreement will be binding on and inure to the benefit of the heirs, executors, administrators,
legal representatives, successors, and assigns of the parties, provided, however, that this
Agreement may not be assigned by the Borrower without the prior written consent of the Bank. The
Bank reserves the right to sell, assign, transfer, negotiate, or grant participations in all or any
part of, or any interest in, the Bank’s rights and benefits under this Agreement, the Note or any
contracts or instruments relating thereto. In connection therewith, the Bank may disclose all
documents and information which the Bank now has or may hereafter acquire relating to the loan or
the Note, the Borrower or his business, or any collateral required hereunder.

X. SEVERABILITY OF PROVISIONS

If any of the provisions of this Agreement shall be prohibited by or invalid under applicable law,
such provision shall be ineffective only to the extent of such prohibition or invalidity without
invalidating the remainder of such provision or any remaining provisions of this Agreement.

XI. VENUE AND JURISDICTION

Any suit, action or proceeding against the Borrower arising out of or relating to this Agreement or
any judgment entered by any court in respect thereof, may be brought or enforced in the courts of
the State of Texas, County of Midland, or in the United States District Court for the Western
District of Texas, as Western in its sole discretion may elect, and Borrower hereby submits to the
nonexclusive jurisdiction of such courts for the purpose of any such suit, action or proceeding.
The Borrower hereby irrevocably consents to service of process in any suit, action or proceeding in
any of said courts by the mailing thereof by the Bank by registered or certified mail, postage
prepaid, to the Borrower, at the address set forth herein.

THE BORROWER HEREBY IRREVOCABLY WAIVES ANY OBJECTIONS THAT THEY MAY NOW OR HEREAFTER HAVE TO THE
LAYING OF VENUE OF ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR
RELATING TO THIS AGREEMENT BROUGHT IN ANY OF SAID COURTS AND HEREBY FURTHER IRREVOCABLY

12

 

WAIVES ANY CLAIM THAT ANY SUCH SUIT, ACTION OR PROCEEDING BROUGHT IN ANY SUCH COURT HAS BEEN
BROUGHT IN AN INCONVENIENT FORUM AND ANY RIGHT GRANTED BY STATUTE, RULE OR COURT OR OTHERWISE TO
HAVE SUCH SUIT, ACTION, OR PROCEEDING TRIED BY A JURY.

XII. MISCELLANEOUS

     A. Texas Law Applicable. This Agreement, the Note, the Security Instruments, and any contracts
or instruments relating thereto, shall be governed by and construed in accordance with the laws of
the State of Texas, except to the extent that the Bank has greater rights or remedies under federal
law or the law of any jurisdiction in which the collateral properties are located, in which case
such choice of Texas law shall not be deemed to deprive the Bank of such rights and remedies under
federal law or the law of any jurisdiction in which the collateral properties are located, in which
case such choice of Texas law shall not be deemed to deprive the Bank of such rights and remedies
as may be available under such law.

     B. Notice of Final Agreement. THIS AGREEMENT, THE NOTE, ANY CONTRACTS OR
INSTRUMENTS RELATING THERETO, REPRESENT THE ENTIRE AGREEMENT BETWEEN THE PARTIES, AND
IT IS EXPRESSLY UNDERSTOOD THAT ALL PRIOR CONVERSATIONS OR MEMORANDA BETWEEN THE
PARTIES REGARDING THE TERMS OF THIS AGREEMENT SHALL BE SUPERSEDED BY THIS AGREEMENT.
ANY AMENDMENT, APPROVAL, OR WAIVER BY WESTERN OF THE TERMS OF THIS AGREEMENT, THE NOTE
AND ANY CONTRACTS OR INSTRUMENTS RELATING THERETO, MUST BE IN WRITING OR CONFIRMED
WRITING, AND SHALL BE EFFECTIVE ONLY TO THE EXTENT SPECIFICALLY SET FORTH IN SUCH
WRITING. THIS AGREEMENT, IN CONJUNCTION WITH THE NOTE AND ANY CONTRACTS OR
INSTRUMENTS RELATING THERETO, SHALL SERVE TO EVIDENCE THE TERMS OF THE ENTIRE
AGREEMENT BETWEEN THE PARTIES.

{The remainder of this page is intentionally left blank. Signature page follows.}

13

 

     Please acknowledge your acceptance of and agreement to the terms of this Agreement by dating
and executing where indicated.

	 	 	 	 	 
	 	Very truly yours,

WESTERN NATIONAL BANK

 	 
	 	By:  	 /s/
James R. Kreuz	 
	 	 	James R. Kreuz 	 
	 	 	President 	 
	 

AGREED TO AND ACCEPTED AS OF THE

18th DAY OF JANUARY 2008.

BORROWER:

DAWSON GEOPHYSICAL COMPANY

	 	 	 	 	 
	By:
	 	 /s/
Stephen C. Jumper	 	 
	 

	 	 

     Stephen C. Jumper
	 	 
	 

	 	     President	 	 
	 
	 	 	 	 
	By:
	 	 /s/ Christina W. Hagan	 	 
	 

	 	 

     Christina W. Hagan
	 	 
	 

	 	     Secretary	 	 

14exv10w7xay

 

    Exhibit 10.7(a)

 

    CLARCOR
    INC.

    STOCK OPTION AGREEMENT

 

    CLARCOR Inc., A Delaware corporation (the “Company”),
    hereby grants
    to          
    (the “Optionee”) as
    of          
    (the “Option Date”), pursuant to the provisions of the
    CLARCOR Inc. 2004 Incentive Plan (the “Plan”), a
    non-qualified option to purchase from the Company (the
    “Option”)           shares
    (“Option Stock”) of its Common Stock, $1 par
    value (“Stock”), at the price of
    $      per share upon and subject to
    the terms and conditions set forth below. Capitalized terms not
    defined herein shall have the meanings specified in the Plan.

 

    1.   Time and Manner of Exercise of Option.

 

			
	 	    1.1. 
	
    Maximum Term of Option.  In no event may the
    Option be exercised, in whole or in part
    after          
    (the “Expiration Date”).

	 
	 	    1.2. 
	
    Exercise of Option.  (a) Subject to
    Sections 1 (b), (c), (d) and 2.1 of this Agreement,
    this Option shall be exercisable in accordance with the
    following schedule:

 

	 	 	 	 	 
	
 
	
 
	
    Percentage of

    
	
 

	
 
	
 
	
    Option Stock 
	
 

	 

	

    From Option Date to 1st Anniversary of Option Date

	
 
	
 
	
    0
	
    %

	

    From 1st Anniversary of Option Date to 2nd Anniversary of Option
    Date

	
 
	
 
	
    up to 25
	
    %

	

    From 2nd Anniversary of Option Date to 3rd Anniversary of Option
    Date

	
 
	
 
	
    up to 50
	
    %

	

    From 3rd Anniversary of Option Date to 4th Anniversary of
    Option Date

	
 
	
 
	
    up to 75
	
    %

	

    Thereafter through the Expiration Date

	
 
	
 
	
    up to 100
	
    %

 

    The foregoing subject to Sections 1(b), (c), (d), and
    (e) of this Agreement and Section VII 8. of the Plan.

 

    (b) If the Optionee’s employment by the company
    terminates by reason of Disability or death, the Option shall
    become fully exercisable and may thereafter be exercised by the
    Optionee or the Optionee’s Legal Representative for a
    period of 2 years after the effective date of the
    Optionee’s termination of employment or until the
    Expiration Date, whichever period is shorter.

 

    (c) If the Optionee’s employment by the Company
    terminates by reason of retirement on or after age 60 (or
    prior to such age with the consent of the Committee), the Option
    shall become fully exercisable and may thereafter be exercised
    by the Optionee or the Optionee’s Legal Representative for
    a period of 5 years after the effective date of the
    Optionee’s termination of employment or until the
    Expiration Date, whichever period is shorter.

 

    (d) Except as provided in Section 2.1, if the
    Optionee’s employment by the Company terminates for any
    reason other than Disability, retirement on or after age 60
    (or prior to such age with the consent of the Committee) or
    death, the Option shall terminate 90 days after the date of
    such termination of employment or until the Expiration Date,
    whichever period is shorter. The Option shall be exercisable
    only to the extent the Option was exercisable on the date of
    Optionee’s termination of employment.

 

    (e) If the Optionee dies during the respective periods
    specified and determined in accordance with
    Sections 1.2(b), (c) or (d) above, the Option
    shall be exercisable only to the extent the Option was
    exercisable on the date of Optionee’s death and may
    thereafter be exercised by Optionee’s Legal Representative
    for a period of two years after the date of death or until the
    Expiration Date whichever period is shorter.

 

			
	 	    1.3. 
	
    Method of Exercise.  (a) Subject to the
    limitations set forth in this Agreement, the Option may be
    exercised by the Optionee (1) by giving written notice to
    the Company specifying the number of whole shares of Stock to be
    purchased and accompanied by payment therefore in full (or
    arrangement made for such payment to the Committee’s
    satisfaction) either (i) in cash, (ii) in previously
    owned whole shares of Stock (which the Optionee has held for at
    least six months prior to the delivery of such shares and for
    which the Optionee has good title free and clear of all liens
    and encumbrances) having a Fair Market Value, determined as of
    the date of exercise, equal to the aggregate purchase price
    payable pursuant to the Option by reason of such exercise or
    (iii) a combination of (i) and (ii), and (2) by
    executing such documents as the Company may reasonably request.
    The Committee shall have sole discretion to

 

			
	 	
	
    disapprove of an election pursuant to clauses (ii) and
    (iii). No share of Stock shall be delivered until the full
    purchase price therefore has been paid.

 

			
	 	    2.   
	
    Additional Terms and Conditions of Option.

 

			
	 	    2.1 
	
    Special Forfeiture/Repayment Rules.  For so
    long as Optionee continues as an employee with the Company and
    for two years (or one year in the case of Triggering Conduct
    under Section 2.1(c)(3)) following Optionee’s
    termination of employment with the Company regardless of the
    reason (“Restricted Period”), Optionee agrees not to
    engage in Triggering Conduct. If Optionee engages in Triggering
    Conduct during the Restricted Period, then:

 

    (a) the Option (or any part thereof that has not been
    exercised) shall immediately and automatically terminate, be
    forfeited, and shall cease to be exercisable at any time;
    and

 

    (b) Optionee shall, within 30 days following written
    notice from the Company, pay the Company an amount equal to
    (1) the gross option gain realized or obtained by Optionee
    or any transferee resulting from the exercise of such Option,
    measured by the greater of (i) the difference between the
    Fair Market Value of the Option Stock underlying the Option on
    the exercise date and the exercise price paid for such Option
    Stock and (ii) the positive difference, if any, between the
    Fair Market Value of the Option Stock underlying the Option on
    the date of disposition of such Option Stock and the exercise
    price paid for such Option Stock, with respect to any portion of
    the Option that had already been exercised at any time within
    two years prior to the Triggering Conduct (the “Look-Back
    Period”), less (2) $1.00. Optionee may be released
    from Optionee’s obligations under this Section 2.1
    only if the Company (or its duly appointed designee) determines,
    in writing and in its sole discretion, that such action is in
    the best interests of the Company. Nothing in this
    Section 2.1 prohibits Optionee from engaging in Triggering
    Conduct. Violation of this Section 2.1 shall, however,
    result in the economic forfeiture or repayment of the benefits
    granted by this Agreement, as provided above, under certain
    circumstances, including, but not limited to, Optionee’s
    acceptance of employment with an entity that is in competition
    with the business conducted by the Company or any of its
    subsidiaries or affiliates (a “Competitor”). Optionee
    agrees to provide the Company with at least 10 days written
    notice prior to directly or indirectly accepting employment with
    or serving as a consultant or advisor or in any other capacity
    to a Competitor, and further agrees to inform any such
    Competitor, before accepting employment or other service
    engagement, of the terms of this Section 2.1 and
    Optionee’s continuing obligations contained herein. No
    provision of this Agreement shall diminish, negate, modify or
    otherwise impact any separate restrictive covenant or other
    Agreement to which Optionee may be a party. Optionee
    acknowledges and agrees that the restrictions contained in this
    Agreement are being made for the benefit of the Company in
    consideration of the Option grant hereunder and for exposing
    Optionee to the Company’s business operations and
    Confidential Information, and for other good and valuable
    consideration, the adequacy of which consideration is hereby
    expressly confirmed. Optionee further acknowledges that the
    receipt of the Option and execution of this Agreement are
    voluntary actions on the part of Optionee and that the Company
    is unwilling to grant the Option to Optionee without including
    the restrictions and covenants of Optionee contained in this
    Agreement.

 

    (c) Triggering Conduct.  As used in this
    Agreement, “Triggering Conduct” shall include:
    (1) disclosing or using in any capacity other than as
    necessary in the performance of duties assigned by the Company
    any Confidential Information or trade secrets of the Company;
    (2) directly or indirectly employing, contacting concerning
    employment, or participating in any way in the recruitment for
    employment or other service-provider relationship of (whether as
    an employee, officer, director, agent, consultant or independent
    contractor) any person who was or is an employee or director of
    the Company at any time within the 12 months prior to the
    termination of Optionee’s employment with the Company; or
    (3) accepting employment with or serving as a consultant or
    advisor or in any substantially similar capacity for any
    Competitor either during Optionee’s employment or within
    one year following Optionee’s termination of employment
    with the Company. For purposes of this section,
    “Confidential Information” shall mean all information
    in documents or computer storage media which has been disclosed
    to or obtained by Employee during or as a consequence of
    employment with the Company and which concerns in any way:

 

    (i) the Company’s business, financial condition,
    results of operations, practices, strategies, forecasts or plans
    with respect to pricing, marketing, manufacturing, purchasing,
    research and development, and the purchase or sale of equipment,
    inventory, stock or other assets;

 

 

    (ii) persons or entities which purchase, or have been
    solicited or identified for solicitation to purchase, the
    Company’s products or services, including but not limited
    to information concerning the nature of their business, the
    identity of their purchasing agents, their purchasing and
    stocking requirements, purchasing and resale patterns and
    procedures, product applications, uses, preferences and needs,
    prices paid for particular products, and other information
    obtained by the Company through contacts with, or inquiries or
    research about, the customers;

 

    (iii) the engineering, performance, manufacturing and cost
    characteristics of the Company’s products and services;

 

    (iv) the identity of the Company’s suppliers and the
    production, distribution or pricing of their products or
    services;

 

    (v) the identity of other employees of the Company, and
    their responsibilities, background, training, competence,
    abilities or compensation; and

 

    (vi) any other information not available in the public
    domain which is useful or of value to the Company and which has
    been identified to or is understood by the Company as being
    confidential to the Company.

 

			
	 	    2.2. 
	
    Withholding Taxes.  (a) As a condition
    precedent to any exercise of the Option, the Optionee shall,
    upon request by the Company, pay to the Company in addition to
    the purchase price of the Option Stock, such amount of cash as
    may be determined, under all applicable federal, state, local or
    other laws or regulations, to withhold and pay over as income or
    other withholding taxes (the “Tax Payments”) with
    respect to such exercise of the Option. If the Optionee shall
    fail to advance the Tax Payments after request by the Company,
    the Company may, in its discretion, deduct any Tax Payments from
    any amount then or thereafter payable by the Company to the
    Optionee.

 

    (b) The Optionee may elect to satisfy his or her obligation
    to advance the Tax Payments by any of the following means:
    (1) a cash payment to the Company pursuant to
    Section 2.1(a), (2) delivery to the Company of
    previously owned whole shares of Stock (which the Optionee has
    held for at least six months prior to the delivery of such
    shares and for which the Optionee has good title, free and clear
    of all liens and encumbrances) having a Fair Market Value
    determined as of the date the obligation to withhold or pay
    taxes first arises in connection with the Option (the “Tax
    Date”), (3) authorizing the Company to withhold whole
    shares of Stock which would otherwise be delivered to the
    Optionee upon exercise of the Option having a Fair Market Value
    determined as of the Tax Date, (4) any combination of (1),
    (2) and (3). The Committee shall have sole discretion to
    disapprove of an election pursuant to any of clauses
    (2) — (4). Shares of Stock to be delivered or withheld
    may not have a Fair Market Value in excess of the minimum amount
    of the Tax Payments, but not in excess of the amount determined
    by applying the Optionee’s maximum marginal tax rate.

 

			
	 	    2.3. 
	
    Compliance with Applicable Law.  The Option is
    subject to the condition that if the listing, registration or
    qualification of the shares subject to the Option upon any
    securities exchange or under any law, or the consent or approval
    of any governmental body, or the taking of any other action is
    necessary or desirable as a condition of, or in connection with,
    the purchase or delivery of shares hereunder, the Option may not
    be exercised, in whole or in part, unless such listing,
    registration, qualification, consent or approval shall have been
    effected or obtained, free of any conditions not acceptable to
    the Company. The Company agrees to use reasonable efforts to
    effect or obtain any such listing, registration, qualification,
    consent or approval.

	 
	 	    2.4. 
	
    Option Confers No Rights as Stockholder.  The
    Optionee shall not be entitled to any privileges of ownership
    with respect to shares of Stock subject to the Option unless and
    until purchased and delivered upon the exercise of the Option,
    in whole or in part, and the Optionee becomes a stockholder of
    record with respect to such delivered shares; and the Optionee
    shall not be considered a stockholder of the Company with
    respect to any such shares not so purchased and delivered.

	 
	 	    2.5. 
	
    Option Confers No Rights to Continued
    Employment.  In no event shall the granting of the
    Option or its acceptance by the Optionee give or be deemed to
    give the Optionee any right to continued employment by the
    Company or any affiliate of the Company.

	 
	 	    2.6. 
	
    Agreement Subject to the Plan.  All of the
    terms and conditions applicable to this Agreement and the Option
    are not set forth herein. Reference is made to the Plan for a
    complete statement of such terms and

 

			
	 	
	
    conditions. This Agreement is subject to the provisions of the
    Plan, and shall be interpreted in accordance therewith. The
    Optionee hereby acknowledges receipt of a copy of the Plan.

 

			
	 	    2.7. 
	
    Meaning of “Legal
    Representative”.  As used herein, the term
    “Legal Representative” shall include an executor,
    administrator, guardian, legal representative or other person
    acting in a similar capacity.

	 
	 	    2.8. 
	
    Successors.  This Agreement shall be binding
    upon and inure to the benefit of any successor or successors of
    the Company and any person or persons who shall, upon the death
    of the Optionee, acquire any rights hereunder in accordance with
    this Agreement or the Plan.

	 
	 	    2.9. 
	
    Governing Law.  The Option, this Agreement, and
    all determinations made and legal actions taken pursuant hereto
    and thereto, to the extent not governed by the laws of the
    United States, shall be governed by the laws of the State of
    Tennessee and construed in accordance therewith without regard
    to principles of conflicts of laws.

 

    CLARCOR Inc.

 

    By: ­
    ­

 

    Accepted
    this ­
    ­
    day of

 

    ­
    ­,
    200

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