BUSINESS LOAN AGREEMENT



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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | ---------- |  | ---------- |  | -------- |  | --------- |  | ------- |  | ------- |  | --------
|Principal                                                                                                                                                                                                                      |  | Loan Date  |  | Maturity   |  | Loan No  |  | Call/Coll |  | Account |  | Officer |  | Initials
|$500,000.00                                                                                                                                                                                                                    |  | 05-22-2008 |  | 05-22-2009 |  | 71057129 |  | 1763 / 01 |  |         |  |         |  |         
|References in the boxes above
are for Lenders use only and do not limit the applicability of this document to any particular loan or item. Any item above containing
* * * has been omitted due to text length limitations.



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|--------- |  | ------------------------ |  | ------- |  | ------------------
|Borrower: |  | MINING OIL INC           |  | Lender: |  | Vista Bank Texas  
|          |  | 1001 FANNIN ST SUITE 270 |  |         |  | Houston           
|          |  | HOUSTON, TX  77002-6711  |  |         |  | 1610 N. Alabama Rd
|          |  |                          |  |         |  | Wharton, TX  77488



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THIS BUSINESS LOAN AGREEMENT dated May 22, 2008, is made and executed between MINING OIL INC
(Borrower) and Vista Bank Texas (Lender) on the following terms and conditions. Borrower has received prior commercial loans from Lender or has applied to Lender for a commercial loan or loans or other financial
accommodations, including those which may be described on any exhibit or schedule attached to this Agreement. Borrower understands and agrees that: (A) in granting, renewing, or extending any Loan, Lender is relying upon Borrowers
representations, warranties, and agreements as set forth in this Agreement; (B) the granting, renewing, or extending of any Loan by Lender at all times shall be subject to Lenders sole judgment and discretion; and (C) all such Loans
shall be and remain subject to the terms and conditions of this Agreement.

TERM. This Agreement shall be effective as of May 22, 2008, and
shall continue in full force and effect until such time as all of Borrowers Loans in favor of Lender have been paid in full, including principal, interest, costs, expenses, attorneys fees, and other fees and charges, or until such time
as the parties may agree in writing to terminate this Agreement.

CONDITIONS PRECEDENT TO EACH ADVANCE. Lenders obligation to make the initial
Advance and each subsequent Advance under this Agreement shall be subject to the fulfillment to Lenders satisfaction of all of the conditions set forth in this Agreement and in the Related Documents.

Loan Documents. Borrower shall provide to Lender the following documents for the Loan: (1) the Note; (2) guaranties;
(3)together with all such Related Documents as Lender may require for the Loan; all in form and substance satisfactory to Lender and Lenders counsel.

Borrowers Authorization. Borrower shall have provided in form and substance satisfactory to Lender properly certified resolutions, duly authorizing the execution and delivery of this Agreement, the Note
and the Related Documents. In addition, Borrower shall have provided such other resolutions, authorizations, documents and instruments as Lender or its counsel, may require.

Payment of Fees and Expenses. Borrower shall have paid to Lender all fees, charges, and other expenses which are then due and payable as specified
in this Agreement or any Related Document.

Representations and Warranties. The representations and warranties set forth in this
Agreement, in the Related Documents, and in any document or certificate delivered to Lender under this Agreement are true and correct.

No Event of Default. There shall not exist at the time of any Advance a condition which would constitute an Event of Default under this Agreement or under any Related Document.

REPRESENTATIONS AND WARRANTIES. Borrower represents and warrants to Lender, as of the date of this Agreement, as of the date of each disbursement of loan
proceeds, as of the date of any renewal, extension or modification of any Loan, and at all times any Indebtedness exists:

Organization. Borrower is a corporation for profit which is, and at all times shall be, duly organized, validly existing, and in good standing under and by virtue of the laws of the State of Texas. Borrower is duly authorized to
transact business in all other states in which Borrower is doing business, having obtained all necessary filings, governmental licenses and approvals for each state in which Borrower is doing business. Specifically, Borrower is, and at all times
shall be, duly qualified as a foreign corporation in all states in which the failure to so qualify would have a material adverse effect on its business or financial condition. Borrower has the full power and authority to own its properties and to
transact the business in which it is presently engaged or presently proposes to engage. Borrower maintains an office at 1001 FANNIN ST SUITE 270, HOUSTON, TX 77002-6711. Unless Borrower has designated otherwise in writing, the principal office is
the office at which Borrower keeps its books and records including its records concerning the Collateral. Borrower will notify Lender prior to any change in the location of Borrowers state of organization or any change in Borrowers name.
Borrower shall do all things necessary to preserve and to keep in full force and effect its existence, rights and privileges, and shall comply with all regulations, rules, ordinances, statutes, orders and decrees of any governmental or
quasi-governmental authority or court applicable to Borrower and Borrowers business activities.

Assumed Business Names.
Borrower has filed or recorded all documents or filings required by law relating to all assumed business names used by Borrower. Excluding the name of Borrower, the following is a complete list of all assumed business names under which Borrower does
business: None.

Authorization. Borrowers execution, delivery, and performance of this Agreement and all the Related
Documents have been duly authorized by all necessary action by Borrower and do not conflict with, result in a violation of, or constitute a default under (1) any provision of (a) Borrowers articles of incorporation or organization,
or bylaws, or (b) any agreement or other instrument binding upon Borrower or (2) any law, governmental regulation, court decree, or order applicable to Borrower or to Borrowers properties.

Financial Information. Each of Borrowers financial statements supplied to Lender truly and completely disclosed Borrowers financial
condition as of the date of the statement, and there has been no material adverse change in Borrowers financial condition subsequent to the date of the most recent financial statement supplied to Lender. Borrower has no material contingent
obligations except as disclosed in such financial statements.

Legal Effect. This Agreement constitutes, and any instrument or
agreement Borrower is required to give under this Agreement when delivered will constitute legal, valid, and binding obligations of Borrower enforceable against Borrower in accordance with their respective terms.

Properties. Except as contemplated by this Agreement or as previously disclosed in Borrowers financial statements or in writing to Lender and
as accepted by Lender, and except for property tax liens for taxes not presently due and payable, Borrower owns and has good title to all of Borrowers properties free and clear of all Security Interests, and has not executed any security
documents or financing statements relating to such properties. All of Borrowers properties are titled in Borrowers legal name, and Borrower has not used or filed a financing statement under any other name, for at least the last five
(5) years.

Hazardous Substances. Except as disclosed to and acknowledged by Lender in writing, Borrower represents and warrants
that: (1) During the period of Borrowers ownership of the Collateral, there has been no use, generation, manufacture, storage, treatment, disposal, release or threatened release of any Hazardous Substance by any person on, under, about or
from any of the Collateral. (2) Borrower has no knowledge of, or reason to believe that there has been (a) any breach or violation of any Environmental Laws; (b) any use, generation, manufacture, storage, treatment, disposal, release
or threatened release of any Hazardous Substance on, under, about or from the Collateral by any prior owners or occupants of any of the Collateral; or (c) any actual or threatened litigation or claims of any kind by any person relating to such
matters. (3) Neither Borrower nor any tenant, contractor, agent or other authorized user of any of the Collateral shall use, generate, manufacture, store, treat, dispose of or release any Hazardous Substance on, under, about or from any of the
Collateral; and any such activity shall be conducted in compliance with all applicable federal, state, and local laws, regulations, and ordinances, including without limitation all Environmental Laws. Borrower authorizes Lender and its agents to
enter upon the Collateral to make such inspections and tests as Lender may deem appropriate to determine compliance of the Collateral with this section of the Agreement. Any inspections or tests made by Lender shall be at Borrowers expense and
for Lenders purposes only and shall not be construed to create any responsibility or liability on the part of Lender to Borrower or to any other person. The representations and warranties contained herein are based on Borrowers due
diligence in investigating the Collateral for hazardous waste and Hazardous Substances. Borrower hereby (1) releases and waives any future claims against Lender for indemnity or contribution in the event Borrower becomes liable for cleanup or
other costs under any such laws, and (2) agrees to indemnify, defend, and hold harmless Lender against any and all claims, losses, liabilities, damages, penalties, and expenses which Lender may directly or indirectly sustain or suffer resulting
from a breach of this section of the Agreement or as a consequence of any use, generation, manufacture, storage, disposal, release or threatened release of a hazardous waste or substance on the Collateral. The provisions of this section of the
Agreement, including the obligation to indemnify and defend, shall survive the payment of the Indebtedness and the termination, expiration or satisfaction of this Agreement and shall not be affected by Lenders acquisition of any interest in
any of the Collateral, whether by foreclosure or otherwise.

Litigation and Claims. No litigation, claim, investigation,
administrative proceeding or similar action (including those for unpaid taxes) against Borrower is pending or threatened, and no other event has occurred which may materially adversely affect Borrowers financial condition or properties, other
than litigation, claims, or other events, if any, that have been disclosed to and acknowledged by Lender in writing.



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|                  |  | BUSINESS LOAN AGREEMENT |  |       
|Loan No: 71057129 |  | (Continued)             |  | Page 2



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Taxes. To the best of Borrowers knowledge, all of Borrowers tax returns and
reports that are or were required to be filed, have been filed, and all taxes, assessments and other governmental charges have been paid in full, except those presently being or to be contested by Borrower in good faith in the ordinary course of
business and for which adequate reserves have been provided.

Lien Priority. Unless otherwise previously disclosed to Lender in
writing, Borrower has not entered into or granted any Security Agreements, or permitted the filing or attachment of any Security Interests on or affecting any of the Collateral directly or indirectly securing repayment of Borrowers Loan and
Note, that would be prior or that may in any way be superior to Lenders Security interests and rights in and to such Collateral.

Binding Effect. This Agreement, the Note, all Security Agreements (if any), and all Related Documents are binding upon the signers thereof, as well as upon their successors, representatives and assigns, and are legally enforceable in
accordance with their respective terms.

AFFIRMATIVE COVENANTS. Borrower covenants and agrees with Lender that, so long as this Agreement remains in
effect, Borrower will:

Notices of Claims and Litigation. Promptly inform Lender in writing of (1) all material adverse changes
in Borrowers financial condition, and (2) all existing and all threatened litigation, claims, investigations, administrative proceedings or similar actions affecting Borrower or any Guarantor which could materially affect the financial
condition of Borrower or the financial condition of any Guarantor.

Financial Records. Maintain its books and records in accordance
with GAAP, applied on a consistent basis, and permit Lender to examine and audit Borrowers books and records at all reasonable times.

Financial Statements. Furnish Lender with the following:

Annual Statements. As soon as available, but in no event
later than ninety (90) days after the end of each fiscal year, Borrowers balance sheet and income statement for the year ended, audited by a certified public accountant satisfactory to Lender.

Interim Statements. As soon as available, but in no event later than thirty (30) days after the end of each month, Borrowers balance sheet
and profit and loss statement for the period ended, prepared by Borrower.

Tax Returns. As soon as available, but in no event later
than thirty (30) days after the applicable filing date for the tax reporting period ended, Federal and other governmental tax returns, prepared by a certified public accountant satisfactory to Lender.

All financial reports required to be provided under this Agreement shall be prepared in accordance with GAAP, applied on a consistent basis, and certified
by Borrower as being true and correct.

Additional Information. Furnish such additional information and statements, as Lender may
request from time to time.

Insurance. Maintain fire and other risk insurance, public liability insurance, and such other insurance
as Lender may require with respect to Borrowers properties and operations, in form, amounts, and coverages reasonably acceptable to Lender and by insurance companies authorized to transact business in Texas. BORROWER MAY FURNISH THE
INSURANCE REQUIRED BY THIS AGREEMENT WHETHER THROUGH EXISTING POLICIES OWNED OR CONTROLLED BY BORROWER OR THROUGH EQUIVALENT COVERAGE FROM ANY INSURANCE COMPANY AUTHORIZED TO TRANSACT BUSINESS IN TEXAS. Borrower, upon request of Lender, will
deliver to Lender from time to time the policies or certificates of insurance in form satisfactory to Lender, including stipulations that coverages will not be cancelled or diminished without at least thirty (30) days prior written notice to Lender.
Each insurance policy also shall include an endorsement providing that coverage in favor of Lender will not be impaired in any way by any act, omission or default of Borrower or any other person. In connection with all policies covering assets in
which Lender holds or is offered a security interest for the Loans, Borrower will provide Lender with such lenders loss payable or other endorsements as Lender may require.

Insurance Reports. Furnish to Lender, upon request of Lender, reports on each existing insurance policy showing such information as Lender may
reasonably request, including without limitation the following: (1) the name of the insurer; (2) the risks insured; (3) the amount of the policy; (4) the properties insured; (5) the then current property values on the basis
of which insurance has been obtained, and the manner of determining those values; and (6) the expiration date of the policy. In addition, upon request of Lender (however not more often than annually), Borrower will have an independent appraiser
satisfactory to Lender determine, as applicable, the actual cash value or replacement cost of any Collateral. The cost of such appraisal shall be paid by Borrower.

Guaranties. Prior to disbursement of any Loan proceeds, furnish executed guaranties of the Loans in favor of Lender, executed by the guarantors named below, on Lenders forms, and in the amounts and under
the conditions set forth in those guaranties.



| |  |                     |  |  |  |           |  | 
| |  | ------------------- |  |  |  | --------- |  | 
| |  | Names of Guarantors |  |  |  |           |  | 
| |  | C VAN LEVY          |  |  |  | Unlimited |  | 
| |  | CHRIS A STACY       |  |  |  | Unlimited |  | 
| |  | GEORGE R KOO        |  |  |  | Unlimited |  | 

Other Agreements. Comply with all terms and conditions of all other agreements, whether now
or hereafter existing, between Borrower and any other party and notify Lender immediately in writing of any default in connection with any other such agreements.

Loan Proceeds. Use all Loan proceeds solely for Borrowers business operations, unless specifically consented to the contrary by Lender in writing.

Taxes, Charges and Liens. Pay and discharge when due all of its indebtedness and obligations, including without limitation all assessments, taxes,
governmental charges, levies and liens, of every kind and nature, imposed upon Borrower or its properties, income, or profits, prior to the date on which penalties would attach, and all lawful claims that, if unpaid, might become a lien or charge
upon any of Borrowers properties, income, or profits. Provided however, Borrower will not be required to pay and discharge any such assessment, tax, charge, levy, lien or claim so long as (1) the legality of the same shall be contested in
good faith by appropriate proceedings, and (2) Borrower shall have established on Borrowers books adequate reserves with respect to such contested assessment, tax, charge, levy, lien, or claim in accordance with GAAP.

Performance. Perform and comply, in a timely manner, with all terms, conditions, and provisions set forth in this Agreement, in the Related
Documents, and in all other instruments and agreements between Borrower and Lender. Borrower shall notify Lender immediately in writing of any default in connection with any agreement.

Operations. Maintain executive and management personnel with substantially the same qualifications and experience as the present executive and
management personnel; provide written notice to Lender of any change in executive and management personnel; conduct its business affairs in a reasonable and prudent manner.

Environmental Studies. Promptly conduct and complete, at Borrowers expense, all such investigations, studies, samplings and testings as may
be requested by Lender or any governmental authority relative to any substance, or any waste or by-product of any substance defined as toxic or a hazardous substance under applicable federal, state, or local law, rule, regulation, order or
directive, at or affecting any property or any facility owned, leased or used by Borrower.

Compliance with Governmental
Requirements. Comply with all laws, ordinances, and regulations, now or hereafter in effect, of all governmental authorities applicable to the conduct of Borrowers properties, businesses and operations, and to the use or occupancy of the
Collateral, including without limitation, the Americans With Disabilities Act. Borrower may contest in good faith any such law, ordinance, or regulation and withhold compliance during any proceeding, including appropriate appeals, so long as
Borrower has notified Lender in writing prior to doing so and so long as, in Lenders sole opinion, Lenders interests in the Collateral are not jeopardized. Lender may require Borrower to post adequate security or a surety bond,
reasonably satisfactory to Lender, to protect Lenders interest.

Inspection. Permit employees or agents of Lender at any
reasonable time to inspect any and all Collateral for the Loan or Loans and Borrowers other properties and to examine or audit Borrowers books, accounts, and records and to make copies and memoranda of Borrowers books, accounts,
and records. If Borrower now or at any time hereafter maintains any records (including without limitation computer generated records and computer software programs for the generation of such records) in the possession of a third party, Borrower,
upon request of Lender, shall notify such party to permit Lender free access to such records at all reasonable times and to provide Lender with copies of any records it may request, all at Borrowers expense.

Environmental Compliance and Reports. Borrower shall comply in all respects with any and all Environmental Laws; not cause or permit to exist, as a
result of an intentional or unintentional action or omission on Borrowers part or on the part of any third party, on property owned and/or occupied by Borrower, any environmental activity where damage may result to the environment, unless such
environmental activity is pursuant to and in compliance with the conditions of a permit issued by the appropriate federal, state or local governmental authorities; shall furnish to Lender promptly and in any event within thirty (30) days after
receipt thereof a copy of any notice, summons, lien, citation, directive, letter or other communication from any governmental agency or instrumentality concerning any intentional or unintentional action or omission on Borrowers part in
connection with any environmental activity whether or not there is damage to the environment and/or other natural resources.



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|                  |  | BUSINESS LOAN AGREEMENT |  |       
|Loan No: 71057129 |  | (Continued)             |  | Page 3



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Additional Assurances. Make, execute and deliver to Lender such promissory notes, mortgages,
deeds of trust, security agreements, assignments, financing statements, instruments, documents and other agreements as Lender or its attorneys may reasonably request to evidence and secure the Loans and to perfect all Security Interests.

RECOVERY OF ADDITIONAL COSTS. If the imposition of or any change in any law, rule, regulation or guideline, or the interpretation or application of any thereof
by any court or administrative or governmental authority (including any request or policy not having the force of law) shall impose, modify or make applicable any taxes (except federal, state or local income or franchise taxes imposed on Lender),
reserve requirements, capital adequacy requirements or other obligations which would (A) increase the cost to Lender for extending or maintaining the credit facilities to which this Agreement relates, (B) reduce the amounts payable to
Lender under this Agreement or the Related Documents, or (C) reduce the rate of return on Lenders capital as a consequence of Lenders obligations with respect to the credit facilities to which this Agreement relates, then Borrower
agrees to pay Lender such additional amounts as will compensate Lender therefor, within five (5) days after Lenders written demand for such payment, which demand shall be accompanied by an explanation of such imposition or charge and a
calculation in reasonable detail of the additional amounts payable by Borrower, which explanation and calculations shall be conclusive in the absence of manifest error.

LENDERS EXPENDITURES. If any action or proceeding is commenced that would materially affect Lenders interest in the Collateral or if Borrower fails to comply with any provision of this Agreement or
any Related Documents, including but not limited to Borrowers failure to discharge or pay when due any amounts Borrower is required to discharge or pay under this Agreement or any Related Documents, Lender on Borrowers behalf may (but
shall not be obligated to) take any action that Lender deems appropriate, including but not limited to discharging or paying all taxes, liens, security interests, encumbrances and other claims, at any time levied or placed on any Collateral and
paying all costs for insuring, maintaining and preserving any Collateral. All such expenditures paid by Lender for such purposes will then bear interest at the Note rate from the date paid by Lender to the date of repayment by Borrower. To the
extent permitted by applicable law, all such expenses will become a part of the Indebtedness and, at Lenders option, will (A) be payable on demand; (B) be added to the balance of the Note and be apportioned among and be payable with
any installment payments to become due during either (1) the term of any applicable insurance policy; or (2) the remaining term of the Note; or (C) be treated as a balloon payment which will be due and payable at the Notes
maturity.

NEGATIVE COVENANTS. Borrower covenants and agrees with Lender that while this Agreement is in effect, Borrower shall not, without the
prior written consent of Lender:

Indebtedness and Liens. (1) Except for trade debt incurred in the normal course of business
and indebtedness to Lender contemplated by this Agreement, create, incur or assume indebtedness for borrowed money, including capital leases, (2) sell, transfer, mortgage, assign, pledge, lease, grant a security interest in, or encumber any of
Borrowers assets (except as allowed as Permitted Liens), or (3) sell with recourse any of Borrowers accounts, except to Lender.

Continuity of Operations. (1) Engage in any business activities substantially different than those in which Borrower is presently engaged, (2) cease operations, liquidate, merge, transfer, acquire or consolidate with any
other entity, change its name, dissolve or transfer or sell Collateral out of the ordinary course of business, or (3) pay any dividends on Borrowed Stock (other than dividends payable in its stock), provided, however that notwithstanding the
foregoing, but only so long as no Event of Default has occurred and is continuing or would result from the payment of dividends, if Borrower is a Subchapter S Corporation (as defined in the Internal Revenue Code of 1986, as amended),
Borrower may pay cash dividends on its stock to its shareholders from time to time in amounts necessary to enable the shareholders to pay income taxes and make estimated income tax payments to satisfy their liabilities under federal and state law
which arise solely from their status as Shareholders of a Subchapter S Corporation because of their ownership of shares of Borrowers stock, or purchase or retire any of Borrowers outstanding shares or alter or amend Borrowers
capital structure.

Loans, Acquisitions and Guaranties. (1) Loan, invest in or advance money or assets to any other person,
enterprise or entity, (2) purchase, create or acquire any interest in any other enterprise or entity, or (3) incur any obligations, surety or guarantor other than in the ordinary course of business.

Agreements. Borrower will not enter into any agreement containing any provisions which would be violated or breached by the performance of
Borrowers obligations under this Agreement or in connection herewith.

CESSATION OF ADVANCES. If Lender has made any commitment to make any
Loan to Borrower, whether under this Agreement or under any other agreement, Lender shall have no obligation to make Loan Advances or to disburse Loan proceeds if: (A) Borrower or any Guarantor is in default under the terms of this Agreement or
any of the Related Documents or any other agreement that Borrower or any Guarantor has with Lender; (B) Borrower or any Guarantor dies, becomes incompetent or becomes insolvent, files a petition in bankruptcy or similar proceedings, or is
adjudged a bankrupt; (C) there occurs a material adverse change in Borrowers financial condition, in the financial condition of any Guarantor, or in the value of any Collateral securing any Loan; or (D) any Guarantor seeks, claims or
otherwise attempts to limit, modify or revoke such Guarantors guaranty of the Loan or any other loan with Lender; or (E) Lender in good faith deems itself insecure, even though no Event of Default shall have occurred.

RIGHT OF SETOFF. To the extent permitted by applicable law, Lender reserves a right of setoff in all Borrowers accounts with Lender (whether checking,
savings, or some other account). This includes all accounts Borrower holds jointly with someone else and all accounts Borrower may open in the future. However, this does not include any IRA or Keogh accounts, or any trust accounts for which setoff
would be prohibited by law. Borrower authorizes Lender, to the extent permitted by applicable law, to charge or setoff all sums owing on the debt against any and all such accounts, and, at Lenders option, to administratively freeze all such
accounts to allow Lender to protect Lenders charge and setoff rights provided in this paragraph.

DEFAULT. Each of the following shall
constitute an Event of Default under this Agreement:

Payment Default. Borrower fails, to make any payment when due under the Loan.

Other Defaults. Borrower fails to comply with or to perform any other term, obligation, covenant or condition contained in this
Agreement or in any of the Related Documents or to comply with or to perform any term, obligation, covenant or condition contained in any other agreement between Lender and Borrower.

False Statements. Any warranty, representation or statement made or furnished to Lender by Borrower or on Borrowers behalf under this
Agreement or the Related Documents is false or misleading in any material respect, either now or at the time made or furnished or becomes false or misleading at any time thereafter.

Insolvency. The dissolution or termination of Borrowers existence as a going business, the insolvency of Borrower, the appointment of a
receiver for any part of Borrowers property, any assignment for the benefit of creditors, any type of creditor workout, or the commencement of any proceeding under any bankruptcy or insolvency laws by or against Borrower.

Defective Collateralization. This Agreement or any of the Related Documents ceases to be in full force and effect (including failure of any
collateral document to create a valid and perfected security interest or lien) at any time and for any reason.

Creditor or Forfeiture
Proceedings. Commencement of foreclosure or forfeiture proceedings, whether by judicial proceeding, self-help, repossession or any other method, by any creditor of Borrower or by any governmental agency against any collateral securing the Loan.
This includes a garnishment of any of Borrowers accounts, including deposit accounts, with Lender. However, this Event of Default shall not apply if there is a good faith dispute by Borrower as to the validity or reasonableness of the claim
which is the basis of the creditor or forfeiture proceeding and if Borrower gives Lender written notice of the creditor or forfeiture proceeding and deposits with Lender monies or a surety bond for the creditor or forfeiture proceeding, in an amount
determined by Lender, in its sole discretion, as being an adequate reserve or bond for the dispute.

Events Affecting Guarantor. Any
of the preceding events occurs with respect to any Guarantor of any of the Indebtedness or any Guarantor dies or becomes incompetent, or revokes or disputes the validity of, or liability under, any Guaranty of the Indebtedness.

Change in Ownership. Any change in ownership of twenty-five percent (25%) or more of the common stock of Borrower.

Adverse Change. A material adverse change occurs in Borrowers financial condition, or Lender believes the prospect of payment or performance
of the Loan is impaired.

Insecurity. Lender in good faith believes itself insecure.

EFFECT OF AN EVENT OF DEFAULT. If any Event of Default shall occur, except where otherwise provided in this Agreement or the Related Documents, all commitments
and obligations of Lender under this Agreement or the Related Documents or any other agreement immediately will terminate (including any obligation to make further Loan Advances or disbursements), and, at Lenders option, all Indebtedness
immediately will become due and payable, all without notice of any kind to Borrower, except that in the case of an Event of Default of the type described in the Insolvency subsection above, such acceleration shall be automatic and not
optional. In addition, Lender shall have all the rights and remedies provided in the Related Documents or available at law, in equity, or otherwise. Except as may be prohibited by applicable law, all of Lenders rights and remedies shall be
cumulative and may be exercised singularly or concurrently. Election by Lender to pursue any remedy shall not exclude pursuit of any other remedy, and an election to make expenditures or to take action to perform an obligation of Borrower or of any
Grantor shall not affect Lenders right to declare a default and to exercise its rights and remedies.



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|                  |  | BUSINESS LOAN AGREEMENT |  |       
|Loan No: 71057129 |  | (Continued)             |  | Page 4



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MISCELLANEOUS PROVISIONS. The following miscellaneous provisions are a part of this Agreement:

Amendments. This Agreement, together with any Related Documents, constitutes the entire understanding and agreement of the parties as to the
matters set forth in this Agreement. No alteration of or amendment to this Agreement shall be effective unless given in writing and signed by the party or parties sought to be charged or bound by the alteration or amendment.

Attorneys Fees; Expenses. Borrower agrees to pay upon demand all of Lenders costs and expenses, including Lenders reasonable
attorneys fees and Lenders legal expenses, incurred in connection with the enforcement of this Agreement. Lender may hire or pay someone else to help enforce this Agreement, and Borrower shall pay the costs and expenses of such
enforcement. Costs and expenses include Lenders reasonable attorneys fees and legal expenses whether or not there is a lawsuit, including Lenders reasonable attorneys fees and legal expenses for bankruptcy proceedings
(including efforts to modify or vacate any automatic stay or injunction), appeals, and any anticipated post-judgment collection services. Borrower also shall pay all court costs and such additional fees as may be directed by the court.

Caption Headings. Caption headings in this Agreement are for convenience purposes only and are not to be used to interpret or define the
provisions of this Agreement.

Consent to Loan Participation. Borrower agrees and consents to Lenders sale or transfer, whether
now or later, of one or more participation interests in the Loan to one or more purchasers, whether related or unrelated to Lender. Lender may provide, without any limitation whatsoever, to any one or more purchasers, or potential purchasers, any
information or knowledge Lender may have about Borrower or about any other matter relating to the Loan, and Borrower hereby waives any rights to privacy Borrower may have with respect to such matters. Borrower additionally waives any and all notices
of sale of participation interests, as well as all notices of any repurchase of such participation interests. Borrower also agrees that the purchasers of any such participation interests will be considered as the absolute owners of such interests in
the Loan and will have all the rights granted under the participation agreement or agreements governing the sale of such participation interests. Borrower further waives all rights of offset or counterclaim that it may have now or later against
Lender or against any purchaser of such a participation interest and unconditionally agrees that either Lender or such purchaser may enforce Borrowers obligation under the Loan irrespective of the failure or insolvency of any holder of any
interest in the Loan. Borrower further agrees that the purchaser of any such participation interests may enforce its interests irrespective of any personal claims or defenses that Borrower may have against Lender.

Governing Law. This Agreement will be governed by federal law applicable to Lender and, to the extent not preempted by federal law, the laws of the
State of Texas without regard to its conflicts of law provisions. This Agreement has been accepted by Lender in the State of Texas.

Choice of Venue. If there is a lawsuit, and if the transaction evidenced by this Agreement occurred in Wharton County, Borrower agrees upon Lenders request to submit to the jurisdiction of the courts of Wharton County, State of
Texas.

No Waiver by Lender. Lender shall not be deemed to have waived any rights under this Agreement unless such waiver is given in
writing and signed by Lender. No delay or omission on the part of Lender in exercising any right shall operate as a waiver of such right or any other right. A waiver by Lender of a provision of this Agreement shall not prejudice or constitute a
waiver of Lenders right otherwise to demand strict compliance with that provision or any other provision of this Agreement. No prior waiver by Lender, nor any course of dealing between Lender and Borrower, or between Lender and any Grantor,
shall constitute a waiver of any of Lenders rights or of any of Borrowers or any Grantors obligations as to any future transactions. Whenever the consent of Lender is required under this Agreement, the granting of such consent by
Lender in any instance shall not constitute continuing consent to subsequent instances where such consent is required and in all cases such consent may be granted or withheld in the sole discretion of Lender.

Notices. Any notice required to be given under this Agreement shall be given in writing, and shall be effective when actually delivered, when
actually received by telefacsimile (unless otherwise required by law), when deposited with a nationally recognized overnight courier, or, if mailed, when deposited in the United States mail, as first class, certified or registered mail postage
prepaid, directed to the addresses shown near the beginning of this Agreement. Any party may change its address for notices under this Agreement by giving formal written notice to the other parties, specifying that the purpose of the notice is to
change the partys address. For notice purposes, Borrower agrees to keep Lender informed at all times of Borrowers current address. Unless otherwise provided or required by law, if there is more than one Borrower, any notice given by
Lender to any Borrower is deemed to be notice given to all Borrowers.

Payment of Interest and Fees. Notwithstanding any other
provision of this Agreement or any provision of any Related Document, Borrower does not agree or intend to pay, and Lender does not agree or intend to charge, collect, take, reserve or receive (collectively referred to herein as charge or
collect), any amount in the nature of interest or in the nature of a fee for the Loan which would in any way or event (including demand, prepayment, or acceleration) cause Lender to contract for, charge or collect more for the Loan than the
maximum Lender would be permitted to charge or collect by any applicable federal or Texas state law. Any such excess interest or unauthorized fee will, instead of anything stated to the contrary, be applied first to reduce the unpaid principal
balance of the Loan, and when the principal has been paid in full, be refunded to Borrower.

Severability. If a court of competent
jurisdiction finds any provision of this Agreement to be illegal, invalid, or unenforceable as to any circumstance, that finding shall not make the offending provision illegal, invalid, or unenforceable as to any other circumstance. If feasible, the
offending provision shall be considered modified so that it becomes legal, valid and enforceable. If the offending provision cannot be so modified, it shall be considered deleted from this Agreement. Unless otherwise required by law, the illegality,
invalidity, or unenforceability of any provision of this Agreement shall not affect the legality, validity or enforceability of any other provision of this Agreement.

Subsidiaries and Affiliates of Borrower. To the extent the context of any provisions of this Agreement makes it appropriate, including without limitation any representation, warranty or covenant, the word
Borrower as used in this Agreement shall include all of Borrowers subsidiaries and affiliates. Notwithstanding the foregoing however, under no circumstances shall this Agreement be construed to require Lender to make any Loan or
other financial accommodation to any of Borrowers subsidiaries or affiliates.

Successors and Assigns. All covenants and
agreements by or on behalf of Borrower contained in this Agreement or any Related Documents shall bind Borrowers successors and assigns and shall inure to the benefit of Lender and its successors and assigns. Borrower shall not, however, have
the right to assign Borrowers rights under this Agreement or any interest therein, without the prior written consent of Lender.

Survival of Representations and Warranties. Borrower understands and agrees that in extending Loan Advances, Lender is relying on all representations, warranties, and covenants made by Borrower in this Agreement or in any certificate
or other instrument delivered by Borrower to Lender under this Agreement or the Related Documents. Borrower further agrees that regardless of any investigation made by Lender, all such representations, warranties and covenants will survive the
extension of Loan Advances and delivery to Lender of the Related Documents, shall be continuing in nature, shall be deemed made and redated by Borrower at the time each Loan Advance is made, and shall remain in full force and effect until such time
as Borrowers Indebtedness shall be paid in full, or until this Agreement shall be terminated in the manner provided above, whichever is the last to occur.

Time is of the Essence. Time is of the essence in the performance of this Agreement.

Waive Jury.
All parties to this Agreement hereby waive the right to any jury trial in any action, proceeding, or counterclaim brought by any party against any other party.

DEFINITIONS. The following capitalized words and terms shall have the following meanings when used in this Agreement. Unless specifically stated to the contrary, all references to dollar amounts shall mean amounts in lawful money of
the United States of America. Words and terms used in the singular shall include the plural, and the plural shall include the singular, as the context may require. Words and terms not otherwise defined in this Agreement shall have the meanings
attributed to such terms in the Uniform Commercial Code. Accounting words and terms not otherwise defined in this Agreement shall have the meanings assigned to them in accordance with generally accepted accounting principles as in effect on the date
of this Agreement:

Advance. The word Advance means a disbursement of Loan funds made, or to be made, to Borrower or on
Borrowers behalf on a line of credit or multiple advance basis under the terms and conditions of this Agreement.

Agreement.
The word Agreement means this Business Loan Agreement, as this Business Loan Agreement may be amended or modified from time to time, together with all exhibits and schedules attached to this Business Loan Agreement from time to time.

Borrower. The word Borrower means MINING OIL INC and includes all co-signers and co-makers signing the Note and all
their successors and assigns.

Collateral. The word Collateral means all property and assets granted as collateral
security for a Loan, whether real or personal property, whether granted directly or indirectly, whether granted now or in the future, and whether granted in the form of a security interest, mortgage, collateral mortgage, deed of trust, assignment,
pledge, crop pledge, chattel mortgage, collateral chattel mortgage, chattel trust, factors lien, equipment trust, conditional sale, trust receipt, lien, charge, lien or title retention contract, lease or consignment intended as a security
device, or any other security or lien interest whatsoever, whether created by law, contract, or otherwise.



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|----------------- |  | ----------------------- |  | ------
|                  |  | BUSINESS LOAN AGREEMENT |  |       
|Loan No: 71057129 |  | (Continued)             |  | Page 5



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Environmental Laws. The words Environmental Laws mean any and all state, federal
and local statutes, regulations and ordinances relating to the protection of human health or the environment, including without limitation the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended, 42 U.S.C.
Section 9601, et seq. (CERCLA), the Superfund Amendments and Reauthorization Act of 1986, Pub. L. No. 99-499 (SARA), the Hazardous Materials Transportation Act, 49 U.S.C. Section 1801, et seq., the Resource
Conservation and Recovery Act, 42 U.S.C. Section 6901, et seq., or other applicable state or federal laws, rules, or regulations adopted pursuant thereto.

Event of Default. The words Event of Default mean any of the events of default set forth in this Agreement in the default section of this Agreement.

GAAP. The word GAAP means generally accepted accounting principles.

Grantor. The word Grantor means each and all of the persons or entities granting a Security Interest in any Collateral for the Loan,
including without limitation all Borrowers granting such a Security Interest.

Guarantor. The word Guarantor means any
guarantor, surety, or accommodation party of any or all of the Loan.

Guaranty. The word Guaranty means the guaranty from
Guarantor to Lender, including without limitation a guaranty of all or part of the Note.

Hazardous Substances. The words
Hazardous Substances mean materials that, because of their quantity, concentration or physical, chemical or infectious characteristics, may cause or pose a present or potential hazard to human health or the environment when improperly
used, treated, stored, disposed of, generated, manufactured, transported or otherwise handled. The words Hazardous Substances are used in their very broadest sense and include without limitation any and all hazardous or toxic substances,
materials or waste as defined by or listed under the Environmental Laws. The term Hazardous Substances also includes, without limitation, petroleum and petroleum by-products or any fraction thereof and asbestos.

Indebtedness. The word Indebtedness means the indebtedness evidenced by the Note or Related Documents, including all principal and
interest together with all other indebtedness and costs and expenses for which Borrower is responsible under this Agreement or under any of the Related Documents.

Lender. The word Lender means Vista Bank Texas, its successors and assigns.

Loan.
The word Loan means any and all loans and financial accommodations from Lender to Borrower whether now or hereafter existing, and however evidenced, including without limitation those loans and financial accommodations described herein
or described on any exhibit or schedule attached to this Agreement from time to time.

Note. The word Note means the Note
executed by MINING OIL INC in the principal amount of $500,000.00 dated May 22, 2008, together with all renewals of, extensions of, modifications of, refinancings of, consolidations of, and substitutions for the note or credit agreement.

Permitted Liens. The words Permitted Liens mean (1) liens and security interests securing Indebtedness owed by Borrower
to Lender; (2) liens for taxes, assessments, or similar charges either not yet due or being contested in good faith; (3) liens of materialmen, mechanics, warehousemen, or carriers, or other like liens arising in the ordinary course of
business and securing obligations which are not yet delinquent; (4) purchase money liens or purchase money security interests upon or in any property acquired or held by Borrower in the ordinary course of business to secure indebtedness
outstanding on the date of this Agreement or permitted to be incurred under the paragraph of this Agreement titled Indebtedness and Liens; (5) liens and security interests which, as of the date of this Agreement, have been disclosed
to and approved by the Lender in writing; and (6) those liens and security interests which in the aggregate constitute an immaterial and insignificant monetary amount with respect to the net value of Borrowers assets.

Related Documents. The words Related Documents mean all promissory notes, credit agreements, loan agreements, environmental agreements,
guaranties, security agreements, mortgages, deeds of trust, security deeds, collateral mortgages, and all other instruments, agreements and documents, whether now or hereafter existing, executed in connection with the Loan.

Security Agreement. The words Security Agreement mean and include without limitation any agreements, promises, covenants, arrangements,
understandings or other agreements, whether created by law, contract, or otherwise, evidencing, governing, representing, or creating a Security Interest.

Security Interest. The words Security Interest mean, without limitation, any and all types of collateral security, present and future, whether in the form of a lien, charge, encumbrance, mortgage,
deed of trust, security deed, assignment, pledge, crop pledge, chattel mortgage, collateral chattel mortgage, chattel trust, factors lien, equipment trust, conditional sale, trust receipt, lien or title retention contract, lease or consignment
intended as a security device, or any other security or lien interest whatsoever whether created by law, contract, or otherwise.

BORROWER ACKNOWLEDGES
HAVING READ ALL THE PROVISIONS OF THIS BUSINESS LOAN AGREEMENT AND BORROWER AGREES TO ITS TERMS. THIS BUSINESS LOAN AGREEMENT IS DATED MAY 22, 2008.

BORROWER:



|                |  |                                    |  |  |  |     |  |                                                         
|--------------- |  | ---------------------------------- |  |  |  | --- |  | --------------------------------------------------------
|MINING OIL INC, |  |                                    |  | 
|                |  |                                    |  | 
|By:             |  | /s/ C VAN LEVY                     |  |  |  | By: |  | /s/ CHRIS A STACY                                       
|                |  | C VAN LEVY, CEO of MINING OIL INC. |  |  |  |     |  | CHRIS A STACY, SECRETARY & GEN COUNSEL of MINING OIL INC



|                          |  |                  
|------------------------- |  | -----------------
|LENDER:  VISTA BANK TEXAS
|                          | 
|By:                       |  | /s/ Illegible    
|                          |  | Authorized Signer







[LETTERHEAD TEXT]



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PROMISSORY NOTE



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|--------------------- |  | ------------------- |  | ------------------ |  | --------------- |  | --------------------- |  | ------- |  | ------- |  | --------
|Principal $500,000.00 |  | Loan Date05-22-2008 |  | Maturity05-22-2009 |  | Loan No71057129 |  | Call / Coll 1763 / 01 |  | Account |  | Officer |  | Initials

|                                                                                                                                                                                                                               |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
|References in the boxes above are for Lenders use only and do not limit the applicability of this document to any particular loan or item. Any item above containing * * * has been omitted due to text length limitations.



|          |  |                                                                |  |  |  |         |  |                                                               |  | 
|--------- |  | -------------------------------------------------------------- |  |  |  | ------- |  | ------------------------------------------------------------- |  | 
|Borrower: |  | MINING OIL INC 1001 FANNIN ST SUITE 270 HOUSTON, TX 77002-6711 |  |  |  | Lender: |  | Vista Bank Texas Houston 1610 N. Alabama Rd Wharton, TX 77488 |  | 



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Principal Amount:
$500,000.00                             Initial Rate:
6.000%                             Date of Note: May 22, 2008

PROMISE TO PAY. MINING OIL INC (Borrower) promises to pay to Vista Bank Texas (Lender), or order, in lawful money of the United States of
America, the principal amount of Five Hundred Thousand & 00/100 Dollars ($500,000.00) or so much as may be outstanding, together with interest on the unpaid outstanding principal balance of each advance. Interest shall be calculated from
the date of each advance until repayment of each advance or maturity, whichever occurs first.

CHOICE OF USURY CEILING AND INTEREST RATE. The
interest rate on this Note has been implemented under the Weekly Ceiling as referred to in Sections 303.002 and 303.003 of the Texas Finance Code. The terms, including the rate, or index, formula, or provision of law used to compute the
rate on the Note, will be subject to revision as to current and future balances, from time to time by notice from Lender in compliance with Section 303.103 of the Texas Finance Code.

PAYMENT. Borrower will pay this loan in full immediately upon Lenders demand. If no demand is made, Borrower will pay this loan in one payment of all
outstanding principal plus all accrued unpaid interest on May 22, 2009. In addition, Borrower will pay regular monthly payments of all accrued unpaid interest due as of each payment date, beginning June 22, 2008, with all subsequent
interest payments to be due on the same day of each month after that. Unless otherwise agreed or required by applicable law, payments will be applied first to any accrued unpaid interest; then to principal; then to any late charges; and then to any
unpaid collection costs. The annual interest rate for this Note is computed on a 365/360 basis; that is, by applying the ratio of the annual interest rate over a year of 360 days, multiplied by the outstanding principal balance, multiplied by the
actual number of days the principal balance is outstanding, unless such calculation would result in a usurious rate, in which case interest shall be calculated on a per diem basis of a year of 365 or 366 days, as the case may be. Borrower will pay
Lender at Lenders address shown above or at such other place as Lender may designate in writing. Notwithstanding any other provision of this Note, Lender will not charge Interest on any undisbursed loan proceeds. No scheduled payment, whether
of principal or interest or both, will be due unless sufficient loan funds have been disbursed by the scheduled payment date to justify the payment.

VARIABLE INTEREST RATE. The interest rate on this Note is subject to change from time to time based on changes in an independent index which is the Prime Rate as published in the Wall Street Journal central edition (the
Index). The Index is not necessarily the lowest rate charged by Lender on its loans. If the Index becomes unavailable during the term of this loan, Lender may designate a substitute index after notifying Borrower. Lender will tell
Borrower the current Index rate upon Borrowers request. The interest rate change will not occur more often than each day. Borrower understands that Lender may make loans based on other rates as well. The Index currently is 5.000% per
annum. The interest rate to be applied prior to maturity to the unpaid principal balance during this Note will be at a rate equal to the Index, adjusted if necessary for any minimum and maximum rate limitations described below, resulting in an
initial rate of 6.000% per annum. NOTICE: Under no circumstances will the interest rate on this Note be less than 6.000% per annum or more than (except for any higher default rate or Post Maturity Rate shown below) the lesser of
18.000% per annum or the maximum rate allowed by applicable law. For purposes of this Note, the maximum rate allowed by applicable law means the greater of (A) the maximum rate of interest permitted under federal or other law
applicable to the indebtedness evidenced by this Note, or (B) the Weekly Ceiling as referred to in Sections 303.002 and 303.003 of the Texas Finance Code.

PREPAYMENT. Borrower may pay without penalty all or a portion of the amount owed earlier than it is due. Prepayment in full shall consist of payment of the remaining unpaid principal balance together with all
accrued and unpaid interest and all other amounts, costs and expenses for which Borrower is responsible under this Note or any other agreement with Lender pertaining to this loan, and in no event will Borrower ever be required to pay any unearned
interest. Early payments will not, unless agreed to by Lender in writing, relieve Borrower of Borrowers obligation to continue to make payments of accrued unpaid interest. Rather, early payments will reduce the principal balance due. Borrower
agrees not to send Lender payments marked paid in full, without recourse, or similar language. If Borrower sends such a payment, Lender may accept it without losing any of Lenders rights under this Note, and Borrower
will remain obligated to pay any further amount owed to Lender. All written communications concerning disputed amounts, including any check or other payment instrument that indicates that the payment constitutes payment in full of the
amount owed or that is tendered with other conditions or limitations or as full satisfaction of a disputed amount must be mailed or delivered to: Vista Bank Texas, 1610 North Alabama Rd Wharton, TX 77488.

LATE CHARGE. If a payment is 10 days or more late, Borrower will be charged 5.000% of the regularly scheduled payment.

POST MATURITY RATE. The Post Maturity Rate on this Note is the lesser of (A) the maximum rate allowed by law or (B) 18.000% per annum. Borrower
will pay interest on all sums due after final maturity, whether by acceleration or otherwise, at that rate.

DEFAULT. Each of the following shall
constitute an event of default (Event of Default) under this Note:

Payment Default. Borrower fails to make any payment
when due under this Note.

Other Defaults. Borrower fails to comply with or to perform any other term, obligation, covenant or
condition contained in this Note or in any of the related documents or to comply with or to perform any term, obligation, covenant or condition contained in any other agreement between Lender and Borrower.

False Statements. Any warranty, representation or statement made or furnished to Lender by Borrower or on Borrowers behalf under this Note or
the related documents is false or misleading in any material respect, either now or at the time made or furnished or becomes false or misleading at any time thereafter.

Insolvency. The dissolution or termination of Borrowers existence as a going business, the insolvency of Borrower, the appointment of a receiver for any part of Borrowers property, any assignment
for the benefit of creditors, any type of creditor workout, or the commencement of any proceeding under any bankruptcy or insolvency laws by or against Borrower.

Creditor or Forfeiture Proceedings. Commencement of foreclosure or forfeiture proceedings, whether by judicial proceeding, self-help, repossession or any other method, by any creditor of Borrower or by any
governmental agency against any collateral securing the loan. This includes a garnishment of any of Borrowers accounts, including deposit accounts, with Lender. However, this Event of Default shall not apply if there is a good faith dispute by
Borrower as to the validity or reasonableness of the claim which is the basis of the creditor or forfeiture proceeding and if Borrower gives Lender written notice of the creditor or forfeiture proceeding and deposits with Lender monies or a surety
bond for the creditor or forfeiture proceeding, in an amount determined by Lender, in its sole discretion, as being an adequate reserve or bond for the dispute.

Events Affecting Guarantor. Any of the preceding events occurs with respect to any Guarantor of any of the indebtedness or any Guarantor dies or becomes incompetent, or revokes or disputes the validity of, or
liability under, any guaranty of the indebtedness evidenced by this Note.

Change In Ownership. Any change in ownership of
twenty-five percent (25%) or more of the common stock of Borrower.

Adverse Change. A material adverse change occurs in
Borrowers financial condition, or Lender believes the prospect of payment or performance of this Note is impaired.

Insecurity.
Lender in good faith believes itself insecure.

LENDERS RIGHTS. Upon default, Lender may declare the entire indebtedness, including the unpaid
principal balance under this Note, all accrued unpaid interest, and all other amounts, costs and expenses for which Borrower is responsible under this Note or any other agreement with Lender pertaining to this loan, immediately due, without notice,
and then Borrower will pay that amount.

ATTORNEYS FEES; EXPENSES. Lender may hire an attorney to help collect this Note if Borrower does not
pay, and Borrower will pay Lenders reasonable attorneys fees. Borrower also will pay Lender all other amounts Lender actually incurs as court costs, lawful fees for filing, recording, releasing to any public office any instrument
securing this Note; the reasonable cost actually expended for repossessing, storing, preparing for sale, and selling any security; and fees for noting a lien on or transferring a certificate of title to any motor vehicle offered as security for this
Note, or premiums or identifiable charges received in connection with the sale of authorized insurance.

JURY WAIVER. Lender and Borrower hereby
waive the right to any jury trial in any action, proceeding, or counterclaim brought by either Lender or Borrower against the other.

GOVERNING LAW.
This Note will be governed by federal law applicable to Lender and, to the extent not preempted by federal law, the laws of the State of Texas without regard to its conflicts of law provisions. This Note has been accepted by Lender in the State of
Texas.



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|----------------- |  | --------------- |  | ------
|                  |  | PROMISSORY NOTE |  |       
|Loan No: 71057129 |  | (Continued)     |  | Page 2



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CHOICE OF VENUE. If there is a lawsuit, and if the transaction evidenced by this Note occurred in Wharton
County, Borrower agrees upon Lenders request to submit to the jurisdiction of the courts of Wharton County. State of Texas.

DISHONORED CHECK
CHARGE. Borrower will pay a processing fee of $25.00 if any check given by Borrower to Lender as a payment on this loan is dishonored.

RIGHT OF
SETOFF. To the extent permitted by applicable law, Lender reserves a right of setoff in all Borrowers accounts with Lender (whether checking, savings, or some other account). This includes all accounts Borrower holds jointly with someone
else and all accounts Borrower may open in the future. However, this does not include any IRA or Keogh accounts, or any trust accounts for which setoff would be prohibited by law. Borrower authorizes Lender, to the extent permitted by applicable
law, to charge or setoff all sums owing on the debt against any and all such accounts, and, at Lenders option, to administratively freeze all such accounts to allow Lender to protect Lenders charge and setoff rights provided in this
paragraph.

COLLATERAL. This loan is unsecured.

LINE OF CREDIT. This Note evidences a revolving line of credit. Advances under this Note, as well as directions for payment from Borrowers accounts, may be requested orally or in writing by Borrower or by an authorized person.
Lender may, but need not, require that all oral requests be confirmed in writing. Borrower agrees to be liable for all sums either: (A) advanced in accordance with the instructions of an authorized person or (B) credited to any of Borrowers
accounts with Lender. The unpaid principal balance owing on this Note at any time may be evidenced by endorsements on this Note or by Lenders internal records, including daily computer print-outs. This revolving line of credit shall not be
subject to Ch. 346 of the Texas Finance Code.

SUCCESSOR INTERESTS. The terms of this Note shall be binding upon Borrower, and upon
Borrowers heirs, personal representatives. successors and assigns, and shall inure to the benefit of Lender and its successors and assigns.

GENERAL PROVISIONS. This Note is payable on demand. The inclusion of specific default provisions or rights of Lender shall nor preclude Lenders right to declare payment of this Note on its demand. If any part of this Note
cannot be enforced, this fact will not affect the rest of the Note. Borrower does not agree or intend to pay, and Lender does not agree or intend to contract for, charge, collect, take, reserve or receive (collectively referred to herein as
charge or collect), any amount in the nature of interest or in the nature of a fee for this loan, which would in any way or event (including demand, prepayment, or acceleration) cause Lender to charge or collect more for this loan than
the maximum Lender would be permitted to charge or collect by federal law or the law of the State of Texas (as applicable). Any such excess interest or unauthorized fee shall, instead of anything stated to the contrary, be applied first to reduce
the principal balance of this loan, and when the principal has been paid in full, be refunded to Borrower. The right to accelerate maturity of sums due under this Note does not include the right to accelerate any interest which has not otherwise
accrued on the date of such acceleration, and Lender does not intend to charge or collect any unearned interest in the event of acceleration. All sums paid or agreed to be paid to Lender for the use, forbearance or detention of sums due hereunder
shall, to the extent permitted by applicable law, be amortized, prorated, allocated and spread throughout the full term of the loan evidenced by this Note until payment in full so that the rate or amount of interest on account of the loan evidenced
hereby does not exceed the applicable usury ceiling. Lender may delay or forgo enforcing any of its rights or remedies under this Note without losing them. Borrower and any other person who signs, guarantees or endorses this Note, to the extent
allowed by law, waive presentment, demand for payment, notice of dishonor, notice of intent to accelerate the maturity of this Note, and notice of acceleration of the maturity of this Note. Upon any change in the terms of this Note, and unless
otherwise expressly stated in writing, no party who signs this Note, whether as maker, guarantor, accommodation maker or endorser, shall be released from liability. All such parties agree that Lender may renew or extend (repeatedly and for any
length of time) this loan or release any party or guarantor or collateral; or impair, fail to realize upon or perfect Lenders security interest in the collateral without the consent of or notice to anyone. All such parties also agree that
Lender may modify this loan without the consent of or notice to anyone other than the party with whom the modification is made. The obligations under this Note are joint and several.

PRIOR TO SIGNING THIS NOTE, BORROWER READ AND UNDERSTOOD ALL THE PROVISIONS OF THIS NOTE, INCLUDING THE VARIABLE INTEREST RATE PROVISIONS. BORROWER AGREES TO THE TERMS OF THE NOTE.

BORROWER ACKNOWLEDGES RECEIPT OF A COMPLETED COPY OF THIS PROMISSORY NOTE

BORROWER:

MINING OIL INC



|    |  |                                     |  |  |  |     |  |                                                         
|--- |  | ----------------------------------- |  |  |  | --- |  | --------------------------------------------------------
|    |  |                                     |  | 
|By: |  | /s/ C. VAN LEVY                     |  |  |  | By: |  | /s/ CHRIS A STACY                                       
|    |  | C. VAN LEVY, CEO of MINING OIL, INC |  |  |  |     |  | CHRIS A STACY, SECRETARY & GEN COUNSEL of MINING OIL INC







[LETTERHEAD TEXT]