Document:

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                                                                   EXHIBIT 10.12

                        GUARANTY AND SURETYSHIP AGREEMENT

         THIS GUARANTY AND SURETYSHIP AGREEMENT (this "Guaranty"), made and
entered into effective as of the 3rd day of June, 2004, by SUPERIOR WELL
SERVICES, LTD., a Pennsylvania limited partnership ("Guarantor") for the benefit
of CITIZENS BANK OF PENNSYLVANIA, a Pennsylvania state chartered bank (the
"Lender").

                                   WITNESSETH:

         WHEREAS, Bradford Resources, Ltd., a Pennsylvania limited partnership
(the "Borrower") has requested the Lender to enter into a certain Credit
Agreement of even date herewith (as the same may be amended, restated,
supplemented or otherwise modified from time to time, the "Credit Agreement")
pursuant to which, among other things, the Lender has agreed to make a standby
term loan available to the Borrower in the principal amount of $10,000,000 (the
"Standby Term Loan"), such loan to be evidenced by a Standby Term Loan Note of
even date herewith in the principal amount $10,000,000 issued by the Borrower to
the Lender (the "Standby Term Loan Note"), together with interest on the Standby
Term Loan at the rates provided for in the Credit Agreement and payable in the
manner and at the times therein set forth; and

         WHEREAS, the proceeds of the Standby Term Loan will be utilized by the
Borrower to acquire equipment which in turn will be leased to the Guarantor, and
as such, Guarantor will derive direct and indirect benefit from the financial
accommodations to be provided to the Borrower under the Credit Agreement; and

         WHEREAS, the Lender is not willing to enter into the Credit Agreement
unless and until Guarantor executes and delivers this Guaranty, and Guarantor
acknowledges and understands that this Guaranty is a material inducement for the
Lender's agreement to make the Standby Term Loan available to the Borrower.

         NOW THEREFORE, for and in consideration of the foregoing premises and
in order to induce the Lender to enter into the Credit Agreement and make
Standby Term Loan to the Borrower thereunder, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
Guarantor covenants and hereby agrees as follows:

         1. Unless otherwise defined herein, capitalized terms used herein shall
have the respective meanings assigned to such terms in the Credit Agreement. In
addition, the following terms shall have the following meanings:

         "Bankruptcy Code" means the federal Bankruptcy Code, 11 U.S.C. Section
101 et. seq., as amended.

         "Guaranteed Obligations" means all indebtedness and obligations of the
Borrower to the Lender, now existing or hereafter incurred or arising under the
Credit Agreement, the Standby Term Loan Note and all other Loan Documents, of
every kind, nature and description, whether direct or indirect, secured or
unsecured, joint, several, or joint and several, absolute or contingent, due or
to become due, whether by acceleration or otherwise, as the same may be
extended, renewed, increased, reduced, refinanced, refunded, amended, modified,
supplemented or consolidated from time to time. Without limiting the foregoing,
the Guaranteed Obligations shall include the Obligations (as defined in the
Credit Agreement) and the liability of the Borrower for the payment of (i)
principal, interest, expenses and fees (including counsel fees) chargeable to or
due from the Borrower under the Credit Agreement, the Standby Term Loan Note and
the other Loan Documents, as the same may be extended, renewed, increased,
reduced, refinanced, refunded, amended, modified, supplemented or consolidated
form time to time, and (ii) all amounts which would have accrued under the Loan
Documents but for the commencement of a case by or against the Borrower under
the Bankruptcy Code.

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         2.       (a) The Guarantor hereby absolutely, irrevocably and
unconditionally guarantees, as a primary obligor and not merely as a surety, the
due and punctual payment in full to the Lender of all existing and future
Guaranteed Obligations when due, at maturity, by acceleration, demand,
prepayment or otherwise, and at all times thereafter. This Guaranty is a
guaranty of payment and not merely collection. The Guarantor acknowledges that
its liability hereunder is absolute and unconditional and agrees to make payment
to the Lender even if the Guaranteed Obligations are for any reason invalid,
irregular or unenforceable.

                  (b) The Guarantor acknowledges that valuable consideration
supports this Guaranty, including, without limitation, the consideration set
forth in the recitals above as well as any commitment to lend, extension of
credit or other financial accommodation, whether heretofore or hereafter made by
the Lender to the Borrower, any extension, renewal or replacement of any of the
Guaranteed Obligations or any forbearance with respect to any of the Guaranteed
Obligations or otherwise.

                  (c) The Guarantor agrees that all payments under this Guaranty
shall be made in United States currency and in the same manner as provided for
in the Guaranteed Obligations.

                  (d) The Guarantor also guarantees the full, prompt and
unconditional performance of all obligations and agreements of every kind owed
or hereafter to be owed by the Borrower to the Lender under or in connection
with the Credit Agreement or any of the other Loan Documents. Every provision
for the benefit of the Lender contained in this Guaranty shall apply to the
guaranty of performance given in this paragraph.

                  (e) All payments hereunder shall be made free and clear of,
and without reduction by reason of, any Taxes which are now or may hereafter be
imposed, levied or assessed by any country, political subdivision or taxing
authority, all of which will be for the account of and paid by the Guarantor. If
for any reason, any such reduction is made or any Taxes are paid by the Lender,
the Guarantor will pay to the Lender such additional amounts as may be necessary
to ensure that the Lender receive the same net amount (after payment of all
Taxes, if applicable) which it would have received had no reduction been made or
Taxes paid.

                  (f) If the obligations of the Guarantor under this Guaranty
would otherwise be held or determined in any Insolvency Proceeding to be
avoidable, invalid or unenforceable on account of the amount of Guarantor's
liability under this Guaranty, then, notwithstanding any other provision of this
Guaranty to the contrary, the amount of such liability shall be automatically
limited and reduced to the maximum amount which does not result in such
invalidity, unenforceability, or avoidability as determined in such Insolvency
Proceeding (such highest amount determined hereunder being the "Guarantor's
Maximum Liability"), without any further action by Guarantor or the Lender. This
Paragraph 2(f) is intended solely to preserve the rights of the Lender to the
maximum extent not subject to avoidance under applicable law, and neither the
Guarantor nor any other Person shall have any right or claim under this
Paragraph 2(f) with respect to the Guarantor's Maximum Liability, except to the
extent necessary so that the obligations of the Guarantor hereunder shall not be
rendered voidable under applicable law.

         3. The Guarantor agrees that upon the failure of the Borrower to pay
all or any portion of the Guaranteed Obligations when due (whether by demand,
stated maturity, acceleration or otherwise), the Guarantor will pay, or cause to
be paid, to the Lender, in cash, all Guaranteed Obligations then due, without
defalcation or offset of any kind, without the Lender being required to pursue
any of its rights against the Borrower or against any other Person, including
any other guarantor, and without being required to liquidate or realize upon any
of the Collateral. In the event of the commencement of a case by or against the
Borrower under the Bankruptcy Code, the Lender shall have the right, as to the
Guarantor, to declare all Guaranteed Obligations immediately due and payable,
whether or not the Lender is able to accelerate the same as against the
Borrower. In any right of action accruing to the Lender under this

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Guaranty, the Lender may elect to proceed against (i) the Guarantor only,
without first having commenced any action against the Borrower, any other
guarantor or surety or any collateral security, (ii) the Guarantor together with
the Borrower, or (iii) the Borrower and then the Guarantor, it being
specifically understood and agreed that the Lender is not required to enforce
any remedies against the Borrower, any other party liable to the Lender for
satisfaction of the Guaranteed Obligations or any collateral securing
satisfaction of the Guaranteed Obligations, nor is the Lender required to
enforce or resort to any remedies with respect to any lien, security interest or
encumbrance granted to the Lender as security for satisfaction of the Guaranteed
Obligations.

         4. The Guarantor hereby expressly waives any and all notice with
respect to (i) acceptance of this Guaranty by the Lender and the Lender's
intention to act in reliance upon this Guaranty, (ii) the incurring of the
Guaranteed Obligations by the Borrower and the amount, terms and conditions
thereof, including without limitation, all future advances made by the Lender to
the Borrower from the date hereof, (iii) any past or future defaults in
connection with the Guaranteed Obligations, (iv) presentment, demand, dishonor
or protest of any kind, (v) failure of any other guarantor or surety to satisfy
the Guaranteed Obligations, and (vi) any adverse change in the Borrower's
condition or of any other fact which may materially increase the risk of the
Guarantor.

         5. The Guarantor expressly agrees that the Lender may, without notice
to the Guarantor, deal with the Guaranteed Obligations and any collateral
security in connection therewith in such manner as the Lender may deem
advisable. The Guarantor further agrees that the Lender may take, or fail to
take, from time to time, with or without notice to the Guarantor, any action of
any nature whatsoever with respect to the Borrower, the Guaranteed Obligations
or any collateral securing satisfaction of the Guaranteed Obligations, and the
Guarantor specifically agrees that the Lender may do any of the following
without notice to the Guarantor and without in any way affecting the validity or
enforceability of this Guaranty: (i) renew, amend, waive, release, surrender,
exchange, compromise or settle any of the Guaranteed Obligations or any of the
terms of the Guaranteed Obligations, including without limitation, the time for
payment of the Guaranteed Obligations, (ii) renew, amend, release or waive any
of the provisions of the Guaranteed Obligations, including, without limitation,
any terms relating to the interest rate charged to the Borrower, (iii) release,
surrender, exchange, substitute or deal with, or abstain from taking advantage
of or realizing upon any surety or guarantor or any lien, security interest or
encumbrance in favor of the Lender or any other collateral held by the Lender as
security for the satisfaction of the Guaranteed Obligations, (iv) settle or
compromise any claims of the Lender against the Borrower or any other guarantor
or surety, or (v) make any other renewals, extensions, modifications,
amendments, postponements, compromises, indulgences, waivers, surrenders,
exchanges and releases of any kind or nature with respect to parties, collateral
or documents in any way connected with or related to the Guaranteed Obligations.
The Guarantor further agrees that this Guaranty remains fully enforceable
irrespective of any defenses which the Borrower may assert against the
Guaranteed Obligations, including, but not limited to, failure of consideration,
breach of warranty, statute of limitations, accord and satisfaction and usury.

         6. The Guarantor further waives (i) any impairment of any collateral
securing satisfaction of the Guaranteed Obligations, including, without
limitation, failure to perfect, or to maintain the perfection of, any lien or
security interest in such collateral, (ii) any right to require the marshaling
of the Borrower's assets, (iii) all offsets, counterclaims or other claims
against the Lender, (iv) the benefit of all laws now or hereafter in effect in
any way limiting or restricting the liability of the Guarantor hereunder, (v)
all defenses or circumstances whatsoever to the Guarantor's liability hereunder,
including, without limitation, those which might constitute a legal or equitable
discharge of a guarantor or surety, but specifically excluding the defense of
actual payment, (vi) all right to stay of execution and exemption of property in
any action to enforce the liability of the Guarantor hereunder, and (vii) any
act or omission by the Lender which changes the scope of the Guarantor's risk.
GUARANTOR ACKNOWLEDGES THAT THE PROVISIONS OF THIS PARAGRAPH CONSTITUTE A WAIVER
BY GUARANTOR OF DEFENSES WHICH GUARANTOR MAY OTHERWISE HAVE BEEN ABLE

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TO ASSERT AGAINST THE OBLIGATIONS OF GUARANTOR UNDER THIS GUARANTY AND THEREFORE
GUARANTOR WILL NOT BE ABLE TO ASSERT SUCH DEFENSES AGAINST PERFORMANCE OF ITS
OBLIGATIONS UNDER THIS GUARANTY.

         7. In addition to all other liability of the Guarantor hereunder, the
Guarantor agrees to pay on demand all costs and reasonable expenses (including
reasonable counsel fees) which may be incurred by the Lender in the enforcement
of the Guaranteed Obligations or the liability of the Guarantor hereunder,
including, without limitation, all costs and reasonable expenses of the Lender
in connection with or incident to actions taken by or on behalf of the Lender in
connection with a case under the Bankruptcy Code or any similar law now or
hereafter in effect. No delay in making demand on the Guarantor for performance
of the Guarantor's obligations under this Guaranty shall prejudice the right of
the Lender to enforce such performance or payment.

         8. Until the Guaranteed Obligations have been fully and indefeasibly
paid and satisfied in full, the Guarantor (i) waives any legal or equitable
rights of subrogation, reimbursement, indemnity, exoneration, contribution or
any other claim which the Guarantor may now or hereafter have against the
Borrower or any other person directly or contingently liable for the Guaranteed
Obligations or against or with respect to the Borrower's assets or properties
(including, without limitation, property securing the Guaranteed Obligations),
and (ii) may not exercise any right to enforce any remedy the Guarantor now has
or may hereafter have against the Borrower or any other guarantor of the
Guaranteed Obligations.

         9. As security for prompt and full satisfaction of the Guarantor's
obligations hereunder, (i) Guarantor has executed and delivered to the Lender a
Security Agreement of even date herewith granting to the Lender a lien on and
security in all of Guarantor's properties and assets, and (ii) Guarantor hereby
pledges to the Lender, and grants to the Lender a security interest in and a
right of set-off against all monies, deposits and other property of any kind
owned by the Guarantor or in which the Guarantor now or hereafter has an
interest and which shall be in the possession of or control of the Lender at any
time for any reason whatsoever, including, without limitation, all deposit
accounts (general or special, time or demand, provisional or final) at any time
maintained by the Guarantor with the Lender; such lien and security interest
shall be independent of any right of set-off which the Lender may have, and in
the event the Guarantor shall not pay to the Lender any amounts when due
hereunder, the Lender may set-off and apply against the Guarantor's liabilities
hereunder all amounts owed by the Lender to the Guarantor which are or may be in
the possession of the Lender.

         10. (a) Guarantor represents and warrants to the Lender as follows:

                  (i) Guarantor (A) is a limited partnership duly organized,
         validly existing and in good standing under the laws of the
         Commonwealth of Pennsylvania and has been duly qualified to conduct
         business and is in good standing in each other jurisdiction where its
         ownership or lease of property or the conduct of its business requires
         such qualification; (B) has the requisite partnership power and
         authority, as applicable, and the legal right to own, pledge, mortgage
         or otherwise encumber and operate its properties, to lease the property
         it operates under lease and to conduct its business as now, heretofore
         and proposed to be conducted; (C) has all licenses, permits, consents
         or approvals from or by, and has made all filings with, and has given
         all notices to, all Authorities having jurisdiction, to the extent
         required for such ownership, operation and conduct; (D) is in
         compliance with its certificate of limited partnership and limited
         partnership agreement; and (E) is in compliance with all applicable
         provisions of law;

                  (ii) Guarantor has full power, authority and legal right to
         enter into this Guaranty and the other Loan Documents to which it is a
         party. The execution, delivery and performance by Guarantor of this
         Guaranty and such other Loan Documents to which it is a party: (A) have
         been duly authorized by all necessary action on the part of such

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         Guarantor; (B) are not in contravention of the terms of Guarantor's
         certificate of limited partnership or limited partnership agreement or
         of any indenture, agreement or undertaking to which Guarantor is a
         party or by which Guarantor or any of its property is bound; (C) do not
         and will not require any consent of, registration with or approval of
         any Authority or the consent of any other Person that has not been
         obtained or made, as applicable; (D) do not and will not contravene any
         contractual or governmental restriction to which Guarantor or any of
         its property may be subject; and (E) do not and will not, except as
         contemplated herein, result in the imposition of any Lien upon any
         property of Guarantor under any existing indenture, mortgage, deed of
         trust, loan or credit agreement or other material agreement or
         instrument to which Guarantor is a party or by which Guarantor or any
         of its property may be bound or affected. Guarantor has the full
         partnership authority to own or lease and operate its property and to
         conduct the business in which it is currently engaged and in which it
         proposes to engage;

                  (iii) This Guaranty and all of the other Loan Documents to
         which Guarantor is a party have been duly executed and delivered by
         Guarantor, are the legal, valid and binding obligations of Guarantor
         and are enforceable against Guarantor in accordance with their terms;

                  (iv) The execution and delivery by Guarantor of this Guaranty
         and all of the other Loan Documents to which it is a party and the
         performance by Guarantor of its obligations hereunder and thereunder
         are not in contravention of any order applicable to Guarantor or, to
         Guarantor's best knowledge, any laws, regulations or ordinances
         applicable to Guarantor. Guarantor is in compliance with all applicable
         laws, orders, regulations and ordinances of all federal, foreign, state
         and local governmental authorities relating to the business operations
         and the property of Guarantor;

                  (v) This Guaranty and the representations and warranties of
         Guarantor in any other Loan Document delivered or to be delivered by
         Guarantor, do not and will not contain any untrue statement of a
         material fact or omit a material fact necessary to make the statements
         contained herein or therein, in light of the circumstances under which
         they were made, not misleading; and

                  (vi) Guarantor has adequate means to obtain from the Borrower
         on a continuing basis information concerning the financial condition of
         the Borrower, and Guarantor is not relying on the Lender to provide
         such information to Guarantor now or in the future.

                  (b) All representations and warranties contained in this
Guaranty or any of the other Loan Documents to which Guarantor is a party shall
survive the execution and delivery of this Guaranty and the termination hereof.

         11. Guarantor covenants that until this Guaranty has been terminated as
provided for in Paragraph 14 below,

                  (i) Guarantor will: (A) do or cause to be done all things
         necessary to preserve and keep in full force and effect its lawful
         existence as a limited partnership; and (B) continue to conduct its
         business substantially as now conducted or as otherwise permitted
         hereunder;

                  (ii) Guarantor will comply in all material respects with all
         federal, state, local and foreign laws and regulations applicable to
         it;

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                  (iii) Except with the prior written consent of the Lender,
         such consent not to be unreasonably withheld, Guarantor will not: (A)
         merge or consolidate, or otherwise combine, with any Person, (B) amend
         its certificate of limited partnership or limited partnership agreement
         in any material respect, (C) sell, transfer, convey, assign or
         otherwise dispose of (other than to the Borrower) any of the Collateral
         owned by it other than in the ordinary course of business, or any of
         its other assets if Guarantor's obligation or ability to pay the
         Guaranteed Obligations could reasonably be expected to be adversely
         affected by the proposed action, (D) execute any agreements or
         contracts other than those entered into in the ordinary course of
         business and not otherwise prohibited by this Guaranty or the other
         Loan Documents, (E) change its fiscal year, or (F) accept or retain any
         loans, dividends or other payments of any kind from the Borrower in
         violation of the terms of the Credit Agreement or any of the other Loan
         Documents. The Lender's consent shall be deemed to have been reasonably
         withheld if the Lender has reasonably determined that the Guarantor's
         obligation or ability to pay the Guaranteed Obligations would be
         adversely affected by the proposed action;

                  (iv) Guarantor will not enter into any indenture, agreement,
         instruments or other arrangement which, (i) directly or indirectly,
         prohibits or restrains, or has the effect of prohibiting or
         restraining, or imposes materially adverse conditions upon, the
         incurrence of the obligations of Guarantor hereunder, or (ii) contains
         any provisions which would be violated or breached by the performance
         by Guarantor of its obligations hereunder;

                  (v) Guarantor will open and maintain its primary operating and
         deposit accounts with the Lender; and

                  (vi) The provisions of Articles VI and VII of the Credit
         Agreement are incorporated herein by reference (together with all
         related definitions and cross-references), insofar as such provisions
         relate to Guarantor, including, without limitation, Section 7.01(a) and
         (b) thereof, and Guarantor hereby covenants to the Lender as provided
         therein. Guarantor will perform, comply with and be bound by all of the
         terms and conditions set forth in the Credit Agreement which relate to
         Guarantor including, without limitation, delivery of financial
         statements, with such terms and conditions being incorporated in this
         Guaranty by reference. GUARANTOR FURTHER COVENANTS AND AGREES THAT IT
         WILL NOT DIRECTLY OR INDIRECTLY TAKE OR AGREE TO TAKE, OR OMIT OR AGREE
         TO OMIT TO TAKE, OR CONSENT TO THE TAKING OF, ANY ACTION WHICH WILL
         RESULT IN THE BORROWER BEING IN VIOLATION OF ANY OF THE PROVISIONS OF
         THE GUARANTEED OBLIGATIONS;

         12. If any one or more of the provisions contained in this Guaranty
shall for any reason be held to be invalid, illegal or unenforceable in any
respect, such holding shall not affect any other provision of this Guaranty, but
this Guaranty shall be construed as if such invalid, illegal or unenforceable
provision had never been contained herein.

         13. No failure or delay on the part of the Lender to exercise any
right, power or privilege hereunder shall operate as a waiver thereof; nor shall
any single or partial exercise of any right, power or privilege hereunder
preclude any other or further exercise thereof, or the exercise of any other
right, power or privilege. Failure by the Lender to insist upon strict
performance hereof shall not constitute a relinquishment of its right to demand
strict performance at another time. If the Lender retains counsel to enforce the
provisions of this Guaranty, Guarantor agrees to reimburse the Lender upon
demand for the expenses, costs and reasonable fees of such counsel incurred in
connection therewith.

         14. This Guaranty shall continue in force and effect until the full,
final and irrevocable payment of the Guaranteed Obligations and termination of
any commitment by the Lender to make any

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further loans or advances to the Borrower. If the Lender receives any payment or
payments which payment or payments or any part thereof are subsequently
invalidated, declared to be fraudulent or preferential, set aside and/or
required to be repaid to a trustee, receiver, or any other party under the
Bankruptcy Code or any other state or federal law, common law or equitable
doctrine, then to the extent of any sum not finally retained by the Lender,
Guarantor's obligations to the Lender shall be reinstated and this Guaranty, and
any security therefor, shall remain in full force and effect (or be reinstated)
until payment shall have been made to the Lender, notwithstanding termination of
this Guaranty or the cancellation of any note, instrument or agreement
evidencing the Guaranteed Obligations, and such payment shall be due on demand
by the Lender. If any action or proceeding seeking such repayment is pending or,
in the Lender's sole judgment, threatened, this Guaranty and any security
therefor shall remain in full force and effect notwithstanding that the Borrower
may not be obligated to the Lender.

         15. This Guaranty is freely assignable and transferable by the Lender
upon the assignment and transfer of the Guaranteed Obligations. The duties and
obligations of Guarantor may not be delegated or transferred by Guarantor
without the prior written consent of the Lender. This Guaranty shall bind
Guarantor and its permitted successors and assigns and shall inure to the
benefit of Lender and its successors and assigns. All references herein to the
Borrower shall be deemed to include its successors and assigns including,
without limitation, a receiver, trustee or debtor in possession of or for
Borrower. This Guaranty is subject to modification only by a writing signed by
the Lender and Guarantor and cannot be changed orally.

         16. Guarantor consents to the commencement and maintenance of any
action or proceeding against it in any court within the Commonwealth of
Pennsylvania or in the United States District Court for the Western District of
Pennsylvania, and Guarantor further consents to service of process in any such
action by the mailing of copies of such process to Guarantor at the address
specified in this Guaranty for delivery of notice to Guarantor. Guarantor agrees
that the courts of the Commonwealth of Pennsylvania and the United States
District Court for the Western District of Pennsylvania shall have exclusive
jurisdiction for any action or proceeding commenced by or through it with
respect to this Guaranty and hereby waives any claim that Allegheny County,
Pennsylvania is an inconvenient forum and that any action or proceeding arising
out of or relating to this Guaranty and commenced in any state or federal courts
sitting in Allegheny County, Pennsylvania lacks proper venue.

         17. Guarantor has unconditionally delivered this Guaranty, and failure
of any other party to sign any suretyship agreement or other agreement shall not
discharge the liability of Guarantor. The unconditional liability of Guarantor
applies whether Guarantor is liable for the entire amount of the Guaranteed
Obligations or for only a portion thereof.

         18. This Guaranty and the other Loan Documents to which Guarantor is a
party embody the entire agreement between Guarantor and the Lender with respect
to the subject matter hereof and supersedes any and all prior or contemporaneous
oral or written understandings, negotiations or communications on behalf of such
parties. No course of dealing, course of performance or trade usage, and no
parol evidence of any nature shall be used to supplement or modify any of the
terms hereof.

         19. This Guaranty is intended to take effect as a document under seal
and shall be deemed made under and governed by, and construed and enforced in
accordance with, the laws of the Commonwealth of Pennsylvania in all respects
without giving effect to its conflict of laws principles, including matters of
construction, performance and enforcement except to the extent the procedural
laws of another jurisdiction shall apply to any action commenced by the Lender
with respect to the remedies of the Lender under this Guaranty or otherwise.
Guarantor acknowledges that the agreement to be governed by the laws of the
Commonwealth of Pennsylvania is not for the purpose of avoiding the law or
public policy of another jurisdiction, but rather is a negotiated term in this
commercial transaction and is based upon a reasonable relation to the
Commonwealth of Pennsylvania.

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         20. Any notice or consent required or permitted by this Guaranty shall
be in writing and shall be delivered in person, by facsimile transmission, by
certified mail, postage prepaid, return receipt requested or by telegraph, to
the addresses set forth on Schedule One attached hereto, unless such address is
changed by written notice hereunder. All notices shall be deemed effective when
delivered in person, on the day of facsimile transmission (subject to
confirmation), when received by registered or certified mail or when refused or
unclaimed by the addressee, whichever the case may be.

         21. GUARANTOR ACKNOWLEDGES THAT, PRIOR TO SIGNING THIS GUARANTY,
GUARANTOR WAS GIVEN AN OPPORTUNITY TO READ IT, CAREFULLY EVALUATE IT AND ASK
QUESTIONS ABOUT IT. GUARANTOR FURTHER ACKNOWLEDGES THAT GUARANTOR WAS GIVEN THE
RIGHT AND OPPORTUNITY TO HAVE THIS GUARANTY REVIEWED BY AN ATTORNEY OF ITS
CHOOSING AND THE LENDER WAS PREPARED TO GIVE GUARANTOR A REASONABLE PERIOD OF
TIME TO DO SO IF GUARANTOR SO DESIRED.

         22. THE LENDER AND GUARANTOR HEREBY KNOWINGLY, VOLUNTARILY AND
INTENTIONALLY WAIVE ANY RIGHT THEY MAY HAVE TO DEMAND A TRIAL BY JURY IN RESPECT
OF ANY LITIGATION ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS GUARANTY OR
THE TRANSACTIONS CONTEMPLATED HEREIN. FURTHER, GUARANTOR HEREBY CERTIFIES THAT
NO REPRESENTATIVE OF THE LENDER OR THE LENDER'S COUNSEL HAS REPRESENTED,
EXPRESSLY OR OTHERWISE, THAT, IN THE EVENT OF SUCH LITIGATION, THE LENDER WOULD
NOT SEEK TO ENFORCE THIS WAIVER OF RIGHT TO JURY TRIAL PROVISION. GUARANTOR
FURTHER ACKNOWLEDGES THAT THE LENDER HAS BEEN OR WILL BE INDUCED TO MAKE THE
LOAN BY, INTER ALIA, THE PROVISIONS OF THIS PARAGRAPH.

         23. The following paragraph sets forth a warrant of authority for an
attorney to confess judgment against Guarantor. In granting this warrant to
confess judgment against Guarantor, Guarantor hereby knowingly, intentionally,
voluntarily and unconditionally waives any and all rights Guarantor has or may
have to prior notice and an opportunity for hearing:

         THE GUARANTOR UNCONDITIONALLY AND IRREVOCABLY AUTHORIZES AND EMPOWERS
ANY ATTORNEY OR ANY PROTHONOTARY, CLERK OF COURT OR COURT OF RECORD, AS ATTORNEY
FOR GUARANTOR, TO APPEAR FOR GUARANTOR IN SUCH COURT AT ANY TIME AFTER THE
GUARANTOR'S FAILURE TO PAY ANY OF THE GUARANTEED OBLIGATIONS WHEN DUE AND
CONFESS JUDGMENT AGAINST GUARANTOR IN FAVOR OF THE LENDER, AND ITS SUCCESSORS
AND ASSIGNS, FOR ALL OR ANY PORTION OF THE OUTSTANDING GUARANTEED OBLIGATIONS,
TOGETHER WITH UNPAID INTEREST, COSTS OF SUIT AND ATTORNEYS' FEES ADDED FOR
COLLECTION IN AN AMOUNT EQUAL TO THE GREATER OF TEN PERCENT (10%) OF THE UNPAID
PRINCIPAL BALANCE OF THE GUARANTEED OBLIGATIONS OR $5,000, OR AS OTHERWISE
PERMITTED BY LAW. GUARANTOR ALSO RELEASES ALL ERRORS, AND TO THE EXTENT
PERMITTED BY LAW, WAIVES AND RELEASES ALL RELIEF FROM ANY AND ALL APPRAISEMENT,
STAY OR EXEMPTION LAW OF ANY STATE NOW IN FORCE OR HEREAFTER ENACTED. IF A COPY
OF THIS GUARANTY, VERIFIED BY AFFIDAVIT OF THE LENDER OR SOMEONE ON BEHALF OF
THE LENDER, SHALL HAVE BEEN FILED IN SUCH ACTION, IT SHALL NOT BE NECESSARY TO
FILE AN ORIGINAL OF THIS GUARANTY AS A WARRANT OF ATTORNEY. THE AUTHORITY AND
POWER TO APPEAR FOR AND ENTER JUDGMENT AGAINST GUARANTOR SHALL NOT BE EXHAUSTED
BY THE INITIAL EXERCISE THEREOF OR BY ANY IMPERFECT EXERCISE THEREOF AND SHALL
NOT BE EXTINGUISHED BY ANY JUDGMENT ENTERED PURSUANT THERETO; THE AUTHORITY AND
POWER MAY BE EXERCISED ON ONE OR MORE OCCASIONS, FROM TIME TO TIME, IN THE SAME

                                       8
<PAGE>

OR DIFFERENT JURISDICTIONS, AS OFTEN AS THE LENDER SHALL DEEM NECESSARY OR
DESIRABLE, FOR ALL OF WHICH THIS GUARANTY OR A VERIFIED COPY HEREOF SHALL BE A
SUFFICIENT WARRANT. TO THE EXTENT PERMITTED BY LAW, INTEREST SHALL ACCRUE ON ANY
UNPAID JUDGMENT AT THE RATE OF INTEREST WHICH WOULD ACCRUE ON THE STANDBY TERM
LOAN UPON THE OCCURRENCE OF AN EVENT OF DEFAULT UNDER THE CREDIT AGREEMENT.

         IN WITNESS WHEREOF, the Guarantor, with the intent to be legally bound,
has executed this Guaranty and Suretyship Agreement the day and year first above
written.

WITNESS:                               SUPERIOR WELL SERVICES, LTD.
                                       By:  BUFFALO VALLEY REAL ESTATE COMPANY,
                                            its sole general partner

/s/ MARK KARENCHAK                          By: /s/ ELMER A. SNYDER
----------------------------                    --------------------------------
                                            Title:
                                                  ------------------------------

                                       9

<PAGE>
                                  SCHEDULE ONE

                                     NOTICES

If to the Guarantor:

If to the Lender:                           With copy to:

Citizens Bank of Pennsylvania               David S. Horvitz, Esquire
525 William Penn Place                      Metz Lewis, LLC
Pittsburgh, PA 15219                        11 Stanwix Street, 18th Floor
Attn: James Nickel, Vice President          Pittsburgh, PA 15222
Telecopy No.: (412) 552-6308                Telecopy No.: (412) 918-1199

                                       10<PAGE>
                                                                   EXHIBIT 10.13

                        GUARANTY AND SURETYSHIP AGREEMENT

         THIS GUARANTY AND SURETYSHIP AGREEMENT (this "Guaranty"), made and
entered into effective as of the 3rd day of June, 2004, by ALLEGHENY MINERAL
CORPORATION, a Pennsylvania corporation ("Guarantor") for the benefit of
CITIZENS BANK OF PENNSYLVANIA, a Pennsylvania state chartered bank (the
"Lender").

                                   WITNESSETH:

         WHEREAS, Bradford Resources, Ltd., a Pennsylvania limited partnership
(the "Borrower") has requested the Lender to enter into a certain Credit
Agreement (as the same may be amended, restated, supplemented or otherwise
modified from time to time, the "Credit Agreement") pursuant to which, among
other things, the Lender has agreed to make a standby term loan available to the
Borrower in the principal amount of $10,000,000 (the "Standby Term Loan"), such
loan to be evidenced by a Standby Term Loan Note in the principal amount
$10,000,000 issued by the Borrower to the Lender (the "Standby Term Loan Note"),
together with interest on the Standby Term Loan at the rates provided for in the
Credit Agreement and payable in the manner and at the times therein set forth;
and

         WHEREAS, as a result of, among other things, the common affiliate
ownership of the Borrower and the Guarantor, and the financial and other support
that the Lender may in the future provide to the collective business enterprise
of the Borrower and the Guarantor, the Guarantor has determined that executing
this Agreement is in its financial benefit; and

         WHEREAS, the Lender is not willing to enter into the Credit Agreement
unless and until Guarantor executes and delivers this Guaranty, and Guarantor
acknowledges and understands that this Guaranty is a material inducement for the
Lender's agreement to make the Standby Term Loan available to the Borrower.

         NOW THEREFORE, for and in consideration of the foregoing premises and
in order to induce the Lender to enter into the Credit Agreement and make
Standby Term Loan to the Borrower thereunder, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
Guarantor covenants and hereby agrees as follows:

         1. Unless otherwise defined herein, capitalized terms used herein shall
have the respective meanings assigned to such terms in the Credit Agreement. In
addition, the following terms shall have the following meanings:

         "Bankruptcy Code" means the federal Bankruptcy Code, 11 U.S.C. Section
101 et. seq., as amended.

         "Guaranteed Obligations" means all indebtedness and obligations of the
Borrower to the Lender, now existing or hereafter incurred or arising under the
Credit Agreement, the Standby Term Loan Note and all other Loan Documents, of
every kind, nature and description, whether direct or indirect, secured or
unsecured, joint, several, or joint and several, absolute or contingent, due or
to become due, whether by acceleration or otherwise, as the same may be
extended, renewed, increased, reduced, refinanced, refunded, amended, modified,
supplemented or consolidated from time to time. Without limiting the foregoing,
the Guaranteed Obligations shall include the Obligations (as defined in the
Credit Agreement) and the liability of the Borrower for the payment of (i)
principal, interest, expenses and fees (including counsel fees) chargeable to or
due from the Borrower under the Credit Agreement, the Standby Term Loan Note and
the other Loan Documents, as the same may be extended, renewed, increased,
reduced, refinanced, refunded, amended, modified, supplemented or consolidated
form time to time, and (ii) all amounts which would have accrued under the Loan
Documents but for the commencement of a case by or against the Borrower under
the Bankruptcy Code.

<PAGE>
         2.       (a) The Guarantor hereby absolutely, irrevocably and
unconditionally guarantees, as a primary obligor and not merely as a surety, the
due and punctual payment in full to the Lender of all existing and future
Guaranteed Obligations when due, at maturity, by acceleration, demand,
prepayment or otherwise, and at all times thereafter. This Guaranty is a
guaranty of payment and not merely collection. The Guarantor acknowledges that
its liability hereunder is absolute and unconditional and agrees to make payment
to the Lender even if the Guaranteed Obligations are for any reason invalid,
irregular or unenforceable.

                  (b) The Guarantor acknowledges that valuable consideration
supports this Guaranty, including, without limitation, the consideration set
forth in the recitals above as well as any commitment to lend, extension of
credit or other financial accommodation, whether heretofore or hereafter made by
the Lender to the Borrower, any extension, renewal or replacement of any of the
Guaranteed Obligations or any forbearance with respect to any of the Guaranteed
Obligations or otherwise.

                  (c) The Guarantor agrees that all payments under this Guaranty
shall be made in United States currency and in the same manner as provided for
in the Guaranteed Obligations.

                  (d) The Guarantor also guarantees the full, prompt and
unconditional performance of all obligations and agreements of every kind owed
or hereafter to be owed by the Borrower to the Lender under or in connection
with the Credit Agreement or any of the other Loan Documents. Every provision
for the benefit of the Lender contained in this Guaranty shall apply to the
guaranty of performance given in this paragraph.

                  (e) All payments hereunder shall be made free and clear of,
and without reduction by reason of, any Taxes which are now or may hereafter be
imposed, levied or assessed by any country, political subdivision or taxing
authority, all of which will be for the account of and paid by the Guarantor. If
for any reason, any such reduction is made or any Taxes are paid by the Lender,
the Guarantor will pay to the Lender such additional amounts as may be necessary
to ensure that the Lender receive the same net amount (after payment of all
Taxes, if applicable) which it would have received had no reduction been made or
Taxes paid.

                  (f) If the obligations of the Guarantor under this Guaranty
would otherwise be held or determined in any Insolvency Proceeding to be
avoidable, invalid or unenforceable on account of the amount of Guarantor's
liability under this Guaranty, then, notwithstanding any other provision of this
Guaranty to the contrary, the amount of such liability shall be automatically
limited and reduced to the maximum amount which does not result in such
invalidity, unenforceability, or avoidability as determined in such Insolvency
Proceeding (such highest amount determined hereunder being the "Guarantor's
Maximum Liability"), without any further action by Guarantor or the Lender. This
Paragraph 2(f) is intended solely to preserve the rights of the Lender to the
maximum extent not subject to avoidance under applicable law, and neither the
Guarantor nor any other Person shall have any right or claim under this
Paragraph 2(f) with respect to the Guarantor's Maximum Liability, except to the
extent necessary so that the obligations of the Guarantor hereunder shall not be
rendered voidable under applicable law.

         3. The Guarantor agrees that upon the failure of the Borrower to pay
all or any portion of the Guaranteed Obligations when due (whether by demand,
stated maturity, acceleration or otherwise), the Guarantor will pay, or cause to
be paid, to the Lender, in cash, all Guaranteed Obligations then due, without
defalcation or offset of any kind, without the Lender being required to pursue
any of its rights against the Borrower or against any other Person, including
any other guarantor, and without being required to liquidate or realize upon any
of the Collateral. In the event of the commencement of a case by or against the
Borrower under the Bankruptcy Code, the Lender shall have the right, as to the
Guarantor, to declare all Guaranteed Obligations immediately due and payable,
whether or not the Lender is able to accelerate the same as against the
Borrower. In any right of action accruing to the Lender under this Guaranty, the
Lender may elect to proceed against (i) the Guarantor only, without first having

                                       2
<PAGE>

commenced any action against the Borrower, any other guarantor or surety or any
collateral security, (ii) the Guarantor together with the Borrower, or (iii) the
Borrower and then the Guarantor, it being specifically understood and agreed
that the Lender is not required to enforce any remedies against the Borrower,
any other party liable to the Lender for satisfaction of the Guaranteed
Obligations or any collateral securing satisfaction of the Guaranteed
Obligations, nor is the Lender required to enforce or resort to any remedies
with respect to any lien, security interest or encumbrance granted to the Lender
as security for satisfaction of the Guaranteed Obligations.

         4. The Guarantor hereby expressly waives any and all notice with
respect to (i) acceptance of this Guaranty by the Lender and the Lender's
intention to act in reliance upon this Guaranty, (ii) the incurring of the
Guaranteed Obligations by the Borrower and the amount, terms and conditions
thereof, including without limitation, all future advances made by the Lender to
the Borrower from the date hereof, (iii) any past or future defaults in
connection with the Guaranteed Obligations, (iv) presentment, demand, dishonor
or protest of any kind, (v) failure of any other guarantor or surety to satisfy
the Guaranteed Obligations, and (vi) any adverse change in the Borrower's
condition or of any other fact which may materially increase the risk of the
Guarantor.

         5. The Guarantor expressly agrees that the Lender may, without notice
to the Guarantor, deal with the Guaranteed Obligations and any collateral
security in connection therewith in such manner as the Lender may deem
advisable. The Guarantor further agrees that the Lender may take, or fail to
take, from time to time, with or without notice to the Guarantor, any action of
any nature whatsoever with respect to the Borrower, the Guaranteed Obligations
or any collateral securing satisfaction of the Guaranteed Obligations, and the
Guarantor specifically agrees that the Lender may do any of the following
without notice to the Guarantor and without in any way affecting the validity or
enforceability of this Guaranty: (i) renew, amend, waive, release, surrender,
exchange, compromise or settle any of the Guaranteed Obligations or any of the
terms of the Guaranteed Obligations, including without limitation, the time for
payment of the Guaranteed Obligations, (ii) renew, amend, release or waive any
of the provisions of the Guaranteed Obligations, including, without limitation,
any terms relating to the interest rate charged to the Borrower, (iii) release,
surrender, exchange, substitute or deal with, or abstain from taking advantage
of or realizing upon any surety or guarantor or any lien, security interest or
encumbrance in favor of the Lender or any other collateral held by the Lender as
security for the satisfaction of the Guaranteed Obligations, (iv) settle or
compromise any claims of the Lender against the Borrower or any other guarantor
or surety, or (v) make any other renewals, extensions, modifications,
amendments, postponements, compromises, indulgences, waivers, surrenders,
exchanges and releases of any kind or nature with respect to parties, collateral
or documents in any way connected with or related to the Guaranteed Obligations.
The Guarantor further agrees that this Guaranty remains fully enforceable
irrespective of any defenses which the Borrower may assert against the
Guaranteed Obligations, including, but not limited to, failure of consideration,
breach of warranty, statute of limitations, accord and satisfaction and usury.

         6. The Guarantor further waives (i) any impairment of any collateral
securing satisfaction of the Guaranteed Obligations, including, without
limitation, failure to perfect, or to maintain the perfection of, any lien or
security interest in such collateral, (ii) any right to require the marshaling
of the Borrower's assets, (iii) all offsets, counterclaims or other claims
against the Lender, (iv) the benefit of all laws now or hereafter in effect in
any way limiting or restricting the liability of the Guarantor hereunder, (v)
all defenses or circumstances whatsoever to the Guarantor's liability hereunder,
including, without limitation, those which might constitute a legal or equitable
discharge of a guarantor or surety, but specifically excluding the defense of
actual payment, (vi) all right to stay of execution and exemption of property in
any action to enforce the liability of the Guarantor hereunder, and (vii) any
act or omission by the Lender which changes the scope of the Guarantor's risk.
GUARANTOR ACKNOWLEDGES THAT THE PROVISIONS OF THIS PARAGRAPH CONSTITUTE A WAIVER
BY GUARANTOR OF DEFENSES WHICH GUARANTOR MAY OTHERWISE HAVE BEEN ABLE TO ASSERT
AGAINST THE OBLIGATIONS OF GUARANTOR UNDER THIS GUARANTY

                                       3
<PAGE>

AND THEREFORE GUARANTOR WILL NOT BE ABLE TO ASSERT SUCH DEFENSES AGAINST
PERFORMANCE OF ITS OBLIGATIONS UNDER THIS GUARANTY.

         7. In addition to all other liability of the Guarantor hereunder, the
Guarantor agrees to pay on demand all costs and reasonable expenses (including
reasonable counsel fees) which may be incurred by the Lender in the enforcement
of the Guaranteed Obligations or the liability of the Guarantor hereunder,
including, without limitation, all costs and reasonable expenses of the Lender
in connection with or incident to actions taken by or on behalf of the Lender in
connection with a case under the Bankruptcy Code or any similar law now or
hereafter in effect. No delay in making demand on the Guarantor for performance
of the Guarantor's obligations under this Guaranty shall prejudice the right of
the Lender to enforce such performance or payment.

         8. Until the Guaranteed Obligations have been fully and indefeasibly
paid and satisfied in full, the Guarantor (i) waives any legal or equitable
rights of subrogation, reimbursement, indemnity, exoneration, contribution or
any other claim which the Guarantor may now or hereafter have against the
Borrower or any other person directly or contingently liable for the Guaranteed
Obligations or against or with respect to the Borrower's assets or properties
(including, without limitation, property securing the Guaranteed Obligations),
and (ii) may not exercise any right to enforce any remedy the Guarantor now has
or may hereafter have against the Borrower or any other guarantor of the
Guaranteed Obligations.

         9. As security for prompt and full satisfaction of the Guarantor's
obligations hereunder, the Guarantor hereby pledges to the Lender, and grants to
the Lender a security interest in and a right of set-off against all monies,
deposits and other property of any kind owned by the Guarantor or in which the
Guarantor now or hereafter has an interest and which shall be in the possession
of or control of the Lender at any time for any reason whatsoever, including,
without limitation, all deposit accounts (general or special, time or demand,
provisional or final) at any time maintained by the Guarantor with the Lender;
such lien and security interest shall be independent of any right of set-off
which the Lender may have, and in the event the Guarantor shall not pay to the
Lender any amounts when due hereunder, the Lender may set-off and apply against
the Guarantor's liabilities hereunder all amounts owed by the Lender to the
Guarantor which are or may be in the possession of the Lender.

         10. (a) Guarantor represents and warrants to the Lender as follows:

                  (i) Guarantor (A) is a corporation duly organized, validly
         existing and in good standing under the laws of the Commonwealth of
         Pennsylvania and has been duly qualified to conduct business and is in
         good standing in each other jurisdiction where its ownership or lease
         of property or the conduct of its business requires such qualification;
         (B) has the requisite corporate power and authority, as applicable, and
         the legal right to own, pledge, mortgage or otherwise encumber and
         operate its properties, to lease the property it operates under lease
         and to conduct its business as now, heretofore and proposed to be
         conducted; (C) has all licenses, permits, consents or approvals from or
         by, and has made all filings with, and has given all notices to, all
         Authorities having jurisdiction, to the extent required for such
         ownership, operation and conduct; (D) is in compliance with its
         articles of incorporation and bylaws; and (E) is in compliance with all
         applicable provisions of law;

                  (ii) Guarantor has full power, authority and legal right to
         enter into this Guaranty and the other Loan Documents to which it is a
         party. The execution, delivery and performance by Guarantor of this
         Guaranty and such other Loan Documents to which it is a party: (A) have
         been duly authorized by all necessary action on the part of such
         Guarantor; (B) are not in contravention of the terms of Guarantor's
         articles of incorporation and bylaws or of any indenture, agreement or
         undertaking to which Guarantor is a party or by which Guarantor or any
         of its property is bound; (C) do not and

                                       4
<PAGE>

         will not require any consent of, registration with or approval of any
         Authority or the consent of any other Person that has not been obtained
         or made, as applicable; (D) do not and will not contravene any
         contractual or governmental restriction to which Guarantor or any of
         its property may be subject; and (E) do not and will not, except as
         contemplated herein, result in the imposition of any Lien upon any
         property of Guarantor under any existing indenture, mortgage, deed of
         trust, loan or credit agreement or other material agreement or
         instrument to which Guarantor is a party or by which Guarantor or any
         of its property may be bound or affected. Guarantor has the full
         corporate power and authority to own or lease and operate its property
         and to conduct the business in which it is currently engaged and in
         which it proposes to engage;

                  (iii) This Guaranty and all of the other Loan Documents to
         which Guarantor is a party have been duly executed and delivered by
         Guarantor, are the legal, valid and binding obligations of Guarantor
         and are enforceable against Guarantor in accordance with their terms;

                  (iv) The execution and delivery by Guarantor of this Guaranty
         and all of the other Loan Documents to which it is a party and the
         performance by Guarantor of its obligations hereunder and thereunder
         are not in contravention of any order applicable to Guarantor or, to
         Guarantor's best knowledge, any laws, regulations or ordinances
         applicable to Guarantor. Guarantor is in compliance with all applicable
         laws, orders, regulations and ordinances of all federal, foreign, state
         and local governmental authorities relating to the business operations
         and the property of Guarantor;

                  (v) This Guaranty and the representations and warranties of
         Guarantor in any other Loan Document delivered or to be delivered by
         Guarantor, do not and will not contain any untrue statement of a
         material fact or omit a material fact necessary to make the statements
         contained herein or therein, in light of the circumstances under which
         they were made, not misleading; and

                  (vi) Guarantor has adequate means to obtain from the Borrower
         on a continuing basis information concerning the financial condition of
         the Borrower, and Guarantor is not relying on the Lender to provide
         such information to Guarantor now or in the future.

                  (b) All representations and warranties contained in this
Guaranty or any of the other Loan Documents to which Guarantor is a party shall
survive the execution and delivery of this Guaranty and the termination hereof.

         11. Guarantor covenants that until this Guaranty has been terminated as
provided for in Paragraph 14 below,

                  (i) Guarantor will: (A) do or cause to be done all things
         necessary to preserve and keep in full force and effect its lawful
         existence as a corporation; and (B) continue to conduct its business
         substantially as now conducted or as otherwise permitted hereunder;

                  (ii) Guarantor will comply in all material respects with all
         federal, state, local and foreign laws and regulations applicable to
         it;

                  (iii) Except with the prior written consent of the Lender,
         such consent not to be unreasonably withheld, Guarantor will not: (A)
         merge or consolidate, or otherwise combine, with any Person, (B) amend
         its articles of incorporation and bylaws in any

                                       5
<PAGE>

         material respect, (C) sell, transfer, convey, assign or otherwise
         dispose of (other than to the Borrower) any of the Collateral owned by
         it other than in the ordinary course of business, or any of its other
         assets if Guarantor's obligation or ability to pay the Guaranteed
         Obligations could reasonably be expected to be adversely affected by
         the proposed action, (D) execute any agreements or contracts other than
         those entered into in the ordinary course of business and not otherwise
         prohibited by this Guaranty or the other Loan Documents, (E) change its
         fiscal year, or (F) accept or retain any loans, dividends or other
         payments of any kind from the Borrower in violation of the terms of the
         Credit Agreement or any of the other Loan Documents. The Lender's
         consent shall be deemed to have been reasonably withheld if the Lender
         has reasonably determined that the Guarantor's obligation or ability to
         pay the Guaranteed Obligations would be adversely affected by the
         proposed action;

                  (iv) Guarantor will not enter into any indenture, agreement,
         instruments or other arrangement which, (i) directly or indirectly,
         prohibits or restrains, or has the effect of prohibiting or
         restraining, or imposes materially adverse conditions upon, the
         incurrence of the obligations of Guarantor hereunder, or (ii) contains
         any provisions which would be violated or breached by the performance
         by Guarantor of its obligations hereunder;

                  (v) Guarantor will open and maintain its primary operating and
         deposit accounts with the Lender; and

                  (vi) The provisions of Articles VI and VII of the Credit
         Agreement are incorporated herein by reference (together with all
         related definitions and cross-references), insofar as such provisions
         relate to Guarantor as a Loan Party thereunder, and Guarantor hereby
         covenants to the Lender as provided therein. Guarantor will perform,
         comply with and be bound by all of the terms and conditions set forth
         in the Credit Agreement which relate to Guarantor including, without
         limitation, delivery of financial statements, with such terms and
         conditions being incorporated in this Guaranty by reference. GUARANTOR
         FURTHER COVENANTS AND AGREES THAT IT WILL NOT DIRECTLY OR INDIRECTLY
         TAKE OR AGREE TO TAKE, OR OMIT OR AGREE TO OMIT TO TAKE, OR CONSENT TO
         THE TAKING OF, ANY ACTION WHICH WILL RESULT IN THE BORROWER BEING IN
         VIOLATION OF ANY OF THE PROVISIONS OF THE GUARANTEED OBLIGATIONS;

         12. If any one or more of the provisions contained in this Guaranty
shall for any reason be held to be invalid, illegal or unenforceable in any
respect, such holding shall not affect any other provision of this Guaranty, but
this Guaranty shall be construed as if such invalid, illegal or unenforceable
provision had never been contained herein.

         13. No failure or delay on the part of the Lender to exercise any
right, power or privilege hereunder shall operate as a waiver thereof; nor shall
any single or partial exercise of any right, power or privilege hereunder
preclude any other or further exercise thereof, or the exercise of any other
right, power or privilege. Failure by the Lender to insist upon strict
performance hereof shall not constitute a relinquishment of its right to demand
strict performance at another time. If the Lender retains counsel to enforce the
provisions of this Guaranty, Guarantor agrees to reimburse the Lender upon
demand for the expenses, costs and reasonable fees of such counsel incurred in
connection therewith.

         14. This Guaranty shall continue in force and effect until the full,
final and irrevocable payment of the Guaranteed Obligations and termination of
any commitment by the Lender to make any further loans or advances to the
Borrower. If the Lender receives any payment or payments which payment or
payments or any part thereof are subsequently invalidated, declared to be
fraudulent or preferential, set aside and/or required to be repaid to a trustee,
receiver, or any other party under the

                                       6
<PAGE>

Bankruptcy Code or any other state or federal law, common law or equitable
doctrine, then to the extent of any sum not finally retained by the Lender,
Guarantor's obligations to the Lender shall be reinstated and this Guaranty, and
any security therefor, shall remain in full force and effect (or be reinstated)
until payment shall have been made to the Lender, notwithstanding termination of
this Guaranty or the cancellation of any note, instrument or agreement
evidencing the Guaranteed Obligations, and such payment shall be due on demand
by the Lender. If any action or proceeding seeking such repayment is pending or,
in the Lender's sole judgment, threatened, this Guaranty and any security
therefor shall remain in full force and effect notwithstanding that the Borrower
may not be obligated to the Lender.

         15. This Guaranty is freely assignable and transferable by the Lender
upon the assignment and transfer of the Guaranteed Obligations. The duties and
obligations of Guarantor may not be delegated or transferred by Guarantor
without the prior written consent of the Lender. This Guaranty shall bind
Guarantor and its permitted successors and assigns and shall inure to the
benefit of Lender and its successors and assigns. All references herein to the
Borrower shall be deemed to include its successors and assigns including,
without limitation, a receiver, trustee or debtor in possession of or for
Borrower. This Guaranty is subject to modification only by a writing signed by
the Lender and Guarantor and cannot be changed orally.

         16. Guarantor consents to the commencement and maintenance of any
action or proceeding against it in any court within the Commonwealth of
Pennsylvania or in the United States District Court for the Western District of
Pennsylvania, and Guarantor further consents to service of process in any such
action by the mailing of copies of such process to Guarantor at the address
specified in this Guaranty for delivery of notice to Guarantor. Guarantor agrees
that the courts of the Commonwealth of Pennsylvania and the United States
District Court for the Western District of Pennsylvania shall have exclusive
jurisdiction for any action or proceeding commenced by or through it with
respect to this Guaranty and hereby waives any claim that Allegheny County,
Pennsylvania is an inconvenient forum and that any action or proceeding arising
out of or relating to this Guaranty and commenced in any state or federal courts
sitting in Allegheny County, Pennsylvania lacks proper venue.

         17. Guarantor has unconditionally delivered this Guaranty, and failure
of any other party to sign any suretyship agreement or other agreement shall not
discharge the liability of Guarantor. The unconditional liability of Guarantor
applies whether Guarantor is liable for the entire amount of the Guaranteed
Obligations or for only a portion thereof.

         18. This Guaranty and the other Loan Documents to which Guarantor is a
party embody the entire agreement between Guarantor and the Lender with respect
to the subject matter hereof and supersedes any and all prior or contemporaneous
oral or written understandings, negotiations or communications on behalf of such
parties. No course of dealing, course of performance or trade usage, and no
parol evidence of any nature shall be used to supplement or modify any of the
terms hereof.

         19. This Guaranty is intended to take effect as a document under seal
and shall be deemed made under and governed by, and construed and enforced in
accordance with, the laws of the Commonwealth of Pennsylvania in all respects
without giving effect to its conflict of laws principles, including matters of
construction, performance and enforcement except to the extent the procedural
laws of another jurisdiction shall apply to any action commenced by the Lender
with respect to the remedies of the Lender under this Guaranty or otherwise.
Guarantor acknowledges that the agreement to be governed by the laws of the
Commonwealth of Pennsylvania is not for the purpose of avoiding the law or
public policy of another jurisdiction, but rather is a negotiated term in this
commercial transaction and is based upon a reasonable relation to the
Commonwealth of Pennsylvania.

         20. Any notice or consent required or permitted by this Guaranty shall
be in writing and shall be delivered in person, by facsimile transmission, by
certified mail, postage prepaid, return receipt requested or by telegraph, to
the addresses set forth on Schedule One attached hereto, unless such address

                                       7
<PAGE>

is changed by written notice hereunder. All notices shall be deemed effective
when delivered in person, on the day of facsimile transmission (subject to
confirmation), when received by registered or certified mail or when refused or
unclaimed by the addressee, whichever the case may be.

         21. GUARANTOR ACKNOWLEDGES THAT, PRIOR TO SIGNING THIS GUARANTY,
GUARANTOR WAS GIVEN AN OPPORTUNITY TO READ IT, CAREFULLY EVALUATE IT AND ASK
QUESTIONS ABOUT IT. GUARANTOR FURTHER ACKNOWLEDGES THAT GUARANTOR WAS GIVEN THE
RIGHT AND OPPORTUNITY TO HAVE THIS GUARANTY REVIEWED BY AN ATTORNEY OF ITS
CHOOSING AND THE LENDER WAS PREPARED TO GIVE GUARANTOR A REASONABLE PERIOD OF
TIME TO DO SO IF GUARANTOR SO DESIRED.

         22. THE LENDER AND GUARANTOR HEREBY KNOWINGLY, VOLUNTARILY AND
INTENTIONALLY WAIVE ANY RIGHT THEY MAY HAVE TO DEMAND A TRIAL BY JURY IN RESPECT
OF ANY LITIGATION ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS GUARANTY OR
THE TRANSACTIONS CONTEMPLATED HEREIN. FURTHER, GUARANTOR HEREBY CERTIFIES THAT
NO REPRESENTATIVE OF THE LENDER OR THE LENDER'S COUNSEL HAS REPRESENTED,
EXPRESSLY OR OTHERWISE, THAT, IN THE EVENT OF SUCH LITIGATION, THE LENDER WOULD
NOT SEEK TO ENFORCE THIS WAIVER OF RIGHT TO JURY TRIAL PROVISION. GUARANTOR
FURTHER ACKNOWLEDGES THAT THE LENDER HAS BEEN OR WILL BE INDUCED TO MAKE THE
LOAN BY, INTER ALIA, THE PROVISIONS OF THIS PARAGRAPH.

         23. The following paragraph sets forth a warrant of authority for an
attorney to confess judgment against Guarantor. In granting this warrant to
confess judgment against Guarantor, Guarantor hereby knowingly, intentionally,
voluntarily and unconditionally waives any and all rights Guarantor has or may
have to prior notice and an opportunity for hearing:

         THE GUARANTOR UNCONDITIONALLY AND IRREVOCABLY AUTHORIZES AND EMPOWERS
ANY ATTORNEY OR ANY PROTHONOTARY, CLERK OF COURT OR COURT OF RECORD, AS ATTORNEY
FOR GUARANTOR, TO APPEAR FOR GUARANTOR IN SUCH COURT AT ANY TIME AFTER THE
GUARANTOR'S FAILURE TO PAY ANY OF THE GUARANTEED OBLIGATIONS WHEN DUE AND
CONFESS JUDGMENT AGAINST GUARANTOR IN FAVOR OF THE LENDER, AND ITS SUCCESSORS
AND ASSIGNS, FOR ALL OR ANY PORTION OF THE OUTSTANDING GUARANTEED OBLIGATIONS,
TOGETHER WITH UNPAID INTEREST, COSTS OF SUIT AND ATTORNEYS' FEES ADDED FOR
COLLECTION IN AN AMOUNT EQUAL TO THE GREATER OF TEN PERCENT (10%) OF THE UNPAID
PRINCIPAL BALANCE OF THE GUARANTEED OBLIGATIONS OR $5,000, OR AS OTHERWISE
PERMITTED BY LAW. GUARANTOR ALSO RELEASES ALL ERRORS, AND TO THE EXTENT
PERMITTED BY LAW, WAIVES AND RELEASES ALL RELIEF FROM ANY AND ALL APPRAISEMENT,
STAY OR EXEMPTION LAW OF ANY STATE NOW IN FORCE OR HEREAFTER ENACTED. IF A COPY
OF THIS GUARANTY, VERIFIED BY AFFIDAVIT OF THE LENDER OR SOMEONE ON BEHALF OF
THE LENDER, SHALL HAVE BEEN FILED IN SUCH ACTION, IT SHALL NOT BE NECESSARY TO
FILE AN ORIGINAL OF THIS GUARANTY AS A WARRANT OF ATTORNEY. THE AUTHORITY AND
POWER TO APPEAR FOR AND ENTER JUDGMENT AGAINST GUARANTOR SHALL NOT BE EXHAUSTED
BY THE INITIAL EXERCISE THEREOF OR BY ANY IMPERFECT EXERCISE THEREOF AND SHALL
NOT BE EXTINGUISHED BY ANY JUDGMENT ENTERED PURSUANT THERETO; THE AUTHORITY AND
POWER MAY BE EXERCISED ON ONE OR MORE OCCASIONS, FROM TIME TO TIME, IN THE SAME
OR DIFFERENT JURISDICTIONS, AS OFTEN AS THE LENDER SHALL DEEM NECESSARY OR
DESIRABLE, FOR ALL OF WHICH THIS GUARANTY OR A VERIFIED COPY HEREOF SHALL BE A
SUFFICIENT WARRANT. TO THE EXTENT PERMITTED BY

                                       8
<PAGE>
LAW, INTEREST SHALL ACCRUE ON ANY UNPAID JUDGMENT AT THE RATE OF INTEREST WHICH
WOULD ACCRUE ON THE STANDBY TERM LOAN UPON THE OCCURRENCE OF AN EVENT OF DEFAULT
UNDER THE CREDIT AGREEMENT.

         IN WITNESS WHEREOF, the Guarantor, with the intent to be legally bound,
has executed this Guaranty and Suretyship Agreement the day and year first above
written.

ATTEST:                                 ALLEGHENY MINERAL CORPORATION

/s/ MARK A. SNYDER                      By: /s/ DENNIS C. SNYDER
---------------------------------          -------------------------------------
            Secretary                   Title:
                                              ----------------------------------

       (CORP. SEAL)

                                       9
<PAGE>

                                  SCHEDULE ONE

                                     NOTICES

If to the Guarantor:

Allegheny Mineral Corporation

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

--------------------------------
Attn:
      --------------------------
Telecopy No.: (   )    -
               ---  --- ----

If to the Lender:                        With copy to:

Citizens Bank of Pennsylvania            David S. Horvitz, Esquire
525 William Penn Place                   Metz Lewis, LLC
Pittsburgh, PA 1521922                   11 Stanwix Street, 18th Floor
Attn: James Nickel, Vice President       Pittsburgh, PA 15222
Telecopy No.: (412) 552-6308             Telecopy No.: (412) 918-1199

                                       10

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