Document:

<PAGE>

November 30, 2001

The Board of Directors
Husker Ag Processing, LLC
510 W. Locust Street
PO Box 10
Plainview, NE  68769

RE:  Construction/USDA Permanent loan financing for a 20 Million Gallon Ethanol
     Plant to be built in Plainview, Nebraska

Gentlemen:

In consideration of the mutual terms set forth herein, and for payment of the
initial loan fee of $50,000, as set forth below, Stearns Bank ("Lender" or
"Bank") hereby agrees to provide debt financing to Husker Ag Processing, LLC
("Borrower" or "Husker Ag"), and Husker Ag agrees to accept its debt financing
with the Bank for the above-referenced project, on the following terms and
conditions:

<TABLE>
<S>                         <C>

Borrower:                   Husker Ag Processing, LLC
---------

Loan Amount:                Up to $20,000,000.00
------------

Interest Rate (Constr):     Wall Street Journal Prime Index plus1/4% (currently 5.25%),  floating,  adjusted
-----------------------     daily.

Interest Rate (Perm):       60% ($12,000,000): Wall Street Journal Prime Index plus 1/4%;
---------------------       40% ($8,000,000): Wall Street Journal Prime Index plus 1/4%,
                            adjusted quarterly, with a floor of 6.5% and a ceiling of 9.95% for
                            five years beginning 7-6-2001. At the end of five years the floor and ceiling will adjust
                            to the same spread, plus or minus, as the  prevailing Prime Rate at that time.

Construction Loan:          Bank will provide up to an 18-month construction loan, which will then convert
------------------          to a permanent USDA loan.

Maturity/Amortization:      10 years permanent loan
----------------------

Closing Costs:              Closing costs include, but are not limited to:  2% Origination Fee ($400,000),
--------------              2% USDA Fee ($240,000), Documentation Fee ($500), plus third party expenses,
                            such as title insurance ($25,000), legal fees ($25,000), appraisal ($10,000),
                            survey ($3,000), USDA feasibility study ($5,000), filing fees, etc.  The
                            initial loan fee of $50,000 paid by Borrower shall be applied to the loan
                            closing costs.
</TABLE>

<PAGE>

Page 2

<TABLE>
<S>                         <C>

Collateral:                 Borrower shall provided Lender with the following Collateral:
-----------
                            . A first real estate mortgage on the real property located near Plainview, Nebraska
                              on which the plant will be built (legal to govern).

                            . A first Security Agreement/Financing Statement covering accounts receivable,
                              inventory, equipment and fixtures, along with personal property and general
                              intangibles.

Guarantee:                  Permanent loan is subject to a 60% USDA Guaranteed Loan ($20,000,000 x 60% =
----------                  $12,000,000).  If USDA declines the loan, Stearns Bank will proceed on a
                            conventional loan basis.

Required Documentation:     All documentation associated with the construction loan, the USDA
-----------------------     application and the USDA permanent loan, as deemed necessary by the Bank/USDA to be
                            provided and/or properly executed, substantially in the form of the loan
                            documents previously provided to Husker Ag Processing, LLC.

Prepayment Premium:         5% of balance in year one, 4% of balance in year two, 3% of balance in year
-------------------         three, 2% of balance in year four, and 1% of balance in year five.

Escrows:                    An escrow account must be maintained with Lender from which real estate taxes
--------                    will be paid.

Appraisal:                  Lender shall be furnished with an appraisal that is satisfactory to Lender.
----------                  Such appraisal will be requested by Lender and prepared by an independent
                            appraiser.

Environmental Audit:        A firm acceptable to Lender is to perform an environmental audit indicating
--------------------        the mortgaged premises are free of hazardous and toxic substances.

Insurance:                  Evidence of builder's risk/hazard insurance will be required at the time of
----------                  loan closing, with Stearns Bank and/or its assigns named as Mortgagee/Loss
                            Payee.

Equity:                     Husker Ag Processing, LLC, has raised $13,000,000 pursuant to its public offering,
------                      which is sufficient equity for the project. Such equity funds shall be held in one or
                            more deposit accounts at the Bank. The actual Loan Amount shall not exceed the
                            difference between the actual amount of equity raised by Husker Ag Processing, LLC
                            in the public offering ("Equity") and the Equity divided by 40% (0.4), but in no event
                            shall it exceed $20 million.
</TABLE>

<PAGE>

Page 3

<TABLE>
<S>                         <C>

Financial Information:      The following financial information will be required:
----------------------
                            a)  Fiscal year-end audited statement prepared by an independent CPA firm

                            b)  Annual tax returns, including all supporting schedules

                            c)  Monthly interim financial statements prepared internally or by a CPA firm

Other:                      Any material adverse change in the Borrower's financial conditions or
------                      discovery of negative information not previously disclosed may invalidate this
                            Agreement.

                            Husker Ag Processing, LLC has previously paid the Lender $15,000, and, in
                            consideration of this Agreement, further pays Lender herewith $35,000, for a total
                            payment of $50,000. This $50,000.00 is nonrefundable and will be applied towards
                            loan closing costs.
</TABLE>

     If the terms and conditions of this agreement are acceptable to Husker Ag
Processing, LLC, please sign the acceptance set forth below and return one copy
to the Bank.

                                                     Sincerely,

                                                     /s/ John E. Herges
                                                     ---------------------------
                                                     John E. Herges
                                                     President

Husker Ag Processing, LLC, hereby accepts the terms and conditions of the
above-described agreement to provide financing.

Husker Ag Processing, LLC

By: /s/  Gary Kuester                                Date:    November 30,  2001
   --------------------

    Its:  Chairman
   --------------------<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------------------------------
     Principal          Loan Date       Maturity       Loan No      Call/Coll        Account      Officer    Initials
<S>                    <C>            <C>              <C>           <C>           <C>            <C>        <C>
   $20,000,000.00       12-19-2001     06-19-2003       53455         47/400         119284         JH
---------------------------------------------------------------------------------------------------------------------
  References in the shaded area 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.
---------------------------------------------------------------------------------------------------------------------
</TABLE>
<TABLE>
<S>        <C>                                              <C>          <C>
Borrower:    HUSKER AG PROCESSING, LLC (TIN: 47-0836953)     LENDER:      STEARNS BANK NATIONAL ASSOCIATION
             PO BOX 10                                                     4191 SO 2ND ST
             PLAINVIEW, NE 68769                                           PO BOX 7338
                                                                           ST CLOUD, MN 56302
=====================================================================================================================
</TABLE>

THIS CONSTRUCTION LOAN AGREEMENT dated December 19, 2001, is made and executed
between HUSKER AG PROCESSING, LLC ("Borrower") and STEARNS BANK NATIONAL
ASSOCIATION ("Lender") on the following terms and conditions. Borrower has
applied to Lender for one or more loans for purposes of constructing the
Improvements on the Real Property described below. Lender is willing to lend the
loan amount to Borrower solely under the terms and conditions specified in this
Agreement and in the Related Documents, to each of which Borrower agrees.
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, and (B) all such Loans shall be and
remain subject to the terms and conditions of this Agreement.

TERM. This Agreement shall be effective as of December 19, 2001, 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.

LOAN. The Loan shall be in an amount not to exceed the principal sum of U.S.
$20,000,000.00 and shall bear interest on so much of the principal sum as shall
be advanced pursuant to the terms of this Agreement and the Related Documents.
The Loan shall bear interest on each Advance from the date of the Advance in
accordance with the terms of the Note. Borrower shall use the Loan Funds solely
for the following specific purposes: ALL MONIES ADVANCED WILL BE USED SOLELY TO
CONSTRUCT THE 20 MGY CAPACITY ETHANOL PLANT LOCATED IN PLAINVIEW, NEBRASKA,
INCLUDING OPERATING COSTS AS SET FORTH IN BORROWER'S BUDGET. The Loan amount
shall be subject at all times to all maximum limits and conditions set forth in
this Agreement or in any of the Related Documents, including without limitation,
any limits relating to loan to value ratios and acquisition and Project costs.

PROJECT DESCRIPTION. The word "Project" as used in this Agreement means the
construction and completion of all Improvements contemplated by this Agreement,
included without limitation the erection of the building or structure on the
Real Property identified to this Agreement by Borrower and Lender, installation
of equipment and fixtures, landscaping, and all other work necessary to make the
Project usable and complete for the intended purposes. The Project includes the
following work:

     CONSTRUCT A 20 MGY CAPACITY ETHANOL PLANT LOCATED IN PLAINVIEW, NEBRASKA,
     INCLUDING OPERATING COSTS AS SET FORTH IN BORROWER'S BUDGET.

The word "Property" as used in this Agreement means the Real Property together
with all Improvements, all equipment, fixtures, and other articles of personal
property now or subsequently attached or affixed to the Real Property, together
with all accessions, parts, and additions to, all replacements of, and all
substitutions for any of such property, and all proceeds (including insurance
proceeds and refunds of premiums) from any sale or other disposition of such
property. The real estate described below constitutes the Real Property as used
in this Agreement.

     The real estate or its address is commonly known as:
         Real Property located at HIGHWAY 20 EAST, PLAINVIEW, NE 67869.

FEES AND EXPENSES. As a condition of Lender making the Loan, Borrower agrees to
pay the following fees, charges, and expenses, in addition to all others set
forth in this Agreement: 2% ORIGINATION FEE, 2% USDA GUARANTEE FEE, $750 LEGAL
FEE, $500 DOCUMENTATION FEE, $150 PER DISBURSEMENT FEE, $20 PER WIRE FEE, ALONG
WITH CLOSING COSTS, INCLUDING BUT NOT LIMITED TO TITLE INSURANCE, APPRAISAL,
FILING FEES, ETC. Whether or not the Project shall be consummated, Borrower
shall assume and pay upon demand all out-of-pocket expenses incurred by Lender
in connection with the preparation of loan documents and the making of the Loan,
including without limitation the following: (A) all closing costs, loan fees,
and disbursements; (B) all expenses of Lender's legal counsel; and (C) all title
examination fees, title insurance premiums, appraisal fees, survey costs,
required fees, and filing and recording fees.

NO CONSTRUCTION PRIOR TO RECORDING OF SECURITY DOCUMENTS. Lender acknowledges
payment to Theisen Progress in the amount of $51,134.51. Borrower will not
permit any work or materials to be furnished in connection with the Project
until (A) Borrower has signed the Related Documents; (B) Lender's mortgage or
deed of trust and other Security Interests in the Property have been duly
recorded and perfected; (C) Lender has been provided evidence, satisfactory to
Lender, that Borrower has obtained all insurance required under this Agreement
or any Related Documents and that Lender's liens on the Property and
Improvements are valid perfected first liens, subject only to such exceptions,
if any, acceptable to Lender.

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 limited liability company 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 Nebraska. 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 limited liability company 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 PO BOX 10, PLAINVIEW,
     NE 68769. 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 Borrower's
     articles of organization or membership agreements, or 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.

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                    (Continued)                             Page 2
================================================================================

     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 in 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 Borrower's 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 and hold harmless Lender against any and all
     claims, losses, liabilities, damages, penalties, and expenses, including
     attorneys' fees, consultants' fees, and costs 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, 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.

     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.

     Title to Property. Borrower has, or on the date of first disbursement of
     Loan proceeds will have, good and marketable title to the Collateral free
     and clear of all defects, liens, and encumbrances, excepting only liens for
     taxes, assessments, or governmental charges or levies not yet delinquent or
     payable without penalty or interest, and such liens and encumbrances as may
     be approved in writing by the Lender. The Collateral is contiguous to
     publicly dedicated streets, roads, or highways providing access to the
     Collateral.

     Project Costs. The Project costs are true and accurate estimates of the
     costs necessary to complete the Improvements in a good and workmanlike
     manner according to the Plans and Specifications presented by Borrower to
     Lender, and Borrower shall take all steps necessary to prevent the actual
     cost of the Improvements from exceeding the Project costs.

     Utility Services. All utility services appropriate to the use of the
     Project after completion of construction are available at the boundaries of
     the Collateral.

     Assessment of Property. The Collateral is and will continue to be assessed
     and taxed as an independent parcel by all governmental authorities.

     Compliance with Governing Authorities. Borrower has examined and is
     familiar with all the easements, covenants, conditions, restrictions,
     reservations, building laws, regulations, zoning ordinances, and federal,
     state, and local requirements affecting the Project. The Project will at
     all times and in all respects conform to and comply with the requirements
     of such easements, covenants, conditions, restrictions, reservations,
     building laws, regulations, zoning ordinances, and federal, state, and
     local requirements.

     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.

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.

     Special Conditions to Initial Advance. TITLE PROFESSIONALS WILL VERIFY THE
     INJECTION OF EQUITY INTO THE PROJECT PRIOR TO FUNDING AND ADVANCE FUNDS
     FROM RECEIPTS SHOWN.

         Equity Funds. Borrower shall provide evidence of equity funds totaling
         $14,402,000.00 prior to the initial advance from the Loan Fund. Lender

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                   (Continued)                              Page 3
================================================================================

     may, at Lender's option, require that the equity funds be deposited with
     Lender as a portion of the Loan Fund, which funds shall be disbursed prior
     to any Loan proceeds.

     Approval of Contractors, Subcontractors, and Materialmen. Lender shall have
     approved a list of all contractors employed in connection with the
     construction of the Improvements, showing the name, address, and telephone
     number of each contractor, a general description of the nature of the work
     to be done, the labor and materials to be supplied, the names of
     materialmen, if known, and the approximate dollar value of the labor, work,
     or materials with respect to each contractor or materialman. Lender shall
     have the right to communicate with any person to verify the facts disclosed
     by the list or by any application for any Advance, or for any other
     purpose.

     Plans, Specifications, and Permits. Lender shall have received and accepted
     a complete set of written Plans and Specifications setting forth all
     Improvements for the Project, and Borrower shall have furnished to Lender
     copies of all permits and requisite approvals of any governmental body
     necessary for the construction and use of the Project.

     Architecture and Construction Contracts. Borrower shall have furnished in
     form and substance satisfactory to Lender an executed copy of the
     Architecture Contract and an executed copy of the Construction Contract.

     Budget and Schedule of Estimated Advances. Lender shall have approved
     detailed budget and cash flow projections of total Project costs and a
     schedule of the estimated amount and time of disbursements of each Advance.

     Borrower's Authorization. Borrower shall have provided in form and
     substance satisfactory to Lender properly certified resolutions, duly
     authorizing the consummation of the Project and 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, in their sole discretion, may require.

     Bond. If requested by Lender, Borrower shall have furnished a performance
     and payment bond in an amount equal to 100% of the amount of the
     Construction Contract, as well as a materialmen's and mechanics' payment
     bond, with such riders and supplements as Lender may require, each in form
     and substance satisfactory to Lender, naming the General Contractor as
     principal and Lender as an additional obligee.

     Appraisal. If required by Lender, an appraisal shall be prepared for the
     Property, at Borrower's expense, which in form and substance shall be
     satisfactory to Lender, in Lender's sole discretion, including applicable
     regulatory requirements.

     Plans and Specifications. If requested by Lender, Borrower shall have
     assigned to Lender on Lender's forms the Plans and Specifications for the
     Project.

     Environmental Report. If requested by Lender, Borrower shall have furnished
     to Lender, at Borrower's expense, an environmental report and certificate
     on the Property in form and substance satisfactory to Lender, prepared by
     an engineer or other expert satisfactory to Lender stating that the
     Property complies with all applicable provisions and requirements of the
     "Hazardous Substances" paragraph set forth in this Agreement.

     Soil Report. If requested by Lender, Borrower shall have furnished to
     Lender, at Borrower's expenses, a soil report for the Property in form and
     substance satisfactory to Lender, prepared by a registered engineer
     satisfactory to Lender stating that the Property is free from soil or other
     geological conditions that would preclude its use or development as
     contemplated without extra expense for precautionary, corrective or
     remedial measures.

     Survey. If requested by Lender, Borrower shall have furnished to Lender a
     survey of recent date, prepared and certified by a qualified surveyor and
     providing that the Improvements, if constructed in accordance with the
     Plans and Specifications, shall lie wholly within the boundaries of the
     Collateral and without encroachment or violation of any zoning ordinances,
     building codes or regulations, or setback requirements, together with such
     other information as Lender in its sole discretion may require.

     Zoning. Borrower shall have furnished evidence satisfactory to Lender that
     the Collateral is duly and validly zoned for the construction, maintenance,
     and operation of the Project.

     Title Insurance. Borrower shall have provided to Lender an ALTA Lender's
     extended coverage policy of title insurance with such endorsements as
     Lender may require, issued by a title insurance company acceptable to
     Lender and in a form, amount, and content satisfactory to Lender, insuring
     or agreeing to insure that Lender's security agreement or other security
     document on the Property is or will be upon recordation a valid first lien
     on the Property free and clear of all defects, liens, encumbrances, and
     exceptions except those as specifically accepted by Lender in writing. If
     requested by Lender, Borrower shall provide to Lender, at Borrower's
     expense, a foundation endorsement to the title policy upon the completion
     of each foundation for the Improvements, showing no encroachments, and upon
     completion an endorsement which insures the lien-free completion of the
     Improvements. Specifically, Borrower shall provide to Lender the following
     title insurance endorsements: SURVEY, MECHANICS LIEN, ZONING, EARLY START,
     CONTIGUITY AND ACCESS ENDORSEMENTS.

     Insurance. Unless waived by Lender in writing, Borrower shall have
     delivered to Lender the following insurance policies or evidence thereof:
     (a) an all risks course of construction insurance policy (builder's risk),
     with extended coverage covering the Improvements issued in an amount and by
     a company acceptable to Lender, containing a loss payable or other
     endorsement satisfactory to Lender insuring Lender as mortgagee, together
     with such other endorsements as may be required by Lender, including
     stipulations that coverages will not be cancelled or diminished without at
     least thirty (30) days prior written notice to Lender; (b) owners and
     General Contractor general liability insurance, public liability and
     workmen's compensation insurance; (c) flood insurance if required by Lender
     or applicable law; and (d) all other insurance required by this Agreement
     or by the Related Documents.

     Worker's Compensation Coverage. Provide to Lender proof of the General
     Contractor's compliance with all applicable workers' compensation laws and
     regulations with regard to all work performed on the Project.

     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.

     Satisfactory Construction. All work usually done at the stage of
     construction for which disbursement is requested shall have been done in a
     good and workmanlike manner and all materials and fixtures usually
     furnished and installed at that stage of construction shall have been
     furnished and installed, all in compliance with the Plans and
     Specifications. Borrower shall also have furnished to Lender such proofs as
     Lender may require to establish the progress of the work, compliance with
     applicable laws, freedom of the Property from liens, and the basis for the
     requested disbursement.

     Certification. Borrower shall have furnished to Lender a certification by
     an engineer, architect, or other qualified inspector acceptable to Lender
     that the construction of the Improvements has complied and will continue to
     comply with all applicable statutes, ordinances, codes, regulations, and
     similar requirements.

     Lien Waivers. Borrower shall have obtained and attached to each application
     for an Advance, including the Advance to cover final payment to the General
     Contractor, executed acknowledgements of payments of all sums due and
     releases of mechanic's and materialmen's liens, satisfactory to Lender,
     from any party having lien rights, which acknowledgements of payment and
     releases of liens shall cover all work, labor, equipment, materials done,
     supplied, performed, or furnished prior to such application for an Advance.

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                   (Continued)                              Page 4
================================================================================

     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.

DISBURSEMENT OF LOAN FUNDS. The following provisions relate to the disbursement
of funds from the Loan Fund.

     Application for Advances. Each application shall be stated on a standard
     AIA payment request form or other form approved by Lender, executed by
     Borrower, and supported by such evidence as Lender shall reasonably
     require. Borrower shall apply only for disbursement with respect to work
     actually done by the General Contractor and for materials and equipment
     actually incorporated into the Project. Each application for an Advance
     shall be deemed a certification of Borrower that as of the date of such
     application, all representations and warranties contained in the Agreement
     are true and correct, and that Borrower is in compliance with all of the
     provisions of this Agreement. Under no circumstances shall Lender be
     required to make any Loan Advance in an amount less than 50,000.00.

     Payments. At the sole option of Lender, Advances may be paid in the joint
     names of Borrower and the General Contractor, subcontractor(s), or
     supplier(s) in payment of sums due under the Construction Contract. At its
     sole option, Lender may directly pay the General Contractor and any
     subcontractors or other parties the sums due under the Construction
     Contract. Borrower appoints Lender as its attorney-in-fact to make such
     payments. This power shall be deemed coupled with an interest, shall be
     irrevocable, and shall survive an Event of Default under this Agreement.

     Project Cost Overruns. If Lender at any time determines in its sole
     discretion that the amount in the Loan Fund is insufficient, or will be
     insufficient, to complete fully and to pay for the Project, then within ten
     (10) days after receipt of a written request from Lender, Borrower shall
     deposit in the Loan Fund an amount equal to the deficiency as determined by
     Lender. The judgment and determination of Lender under this section shall
     be final and conclusive. Any such amounts deposited by Borrower shall be
     disbursed prior to any Loan proceeds.

     Final Payment to General Contractor. Upon completion of the Project and
     fulfillment of the Construction Contract to the satisfaction of Lender and
     provided sufficient Loan Funds are available, Lender shall make an Advance
     to cover the final payment due to the General Contractor upon delivery to
     Lender of endorsements to the ALTA title insurance policy following the
     posting of the completion notice, as provided under applicable law.
     Construction shall not be deemed complete for purposes of final
     disbursement unless and until Lender shall have received all of the
     following:

          (1) Evidence satisfactory to Lender that all work under the
          Construction Contract requiring inspection by any governmental
          authority with jurisdiction has been duly inspected and approved by
          such authority, that a certificate of occupancy has been issued, and
          that all parties performing work have been paid, or will be paid, for
          such work;

          (2) A certification by an engineer, architect, or other qualified
          inspector acceptable to Lender that the Improvements have been
          completed substantially in accordance with the Plans and
          Specifications and the Construction Contract, that direct connection
          has been made to all utilities set forth in the Plans and
          Specifications, and that the Project is ready for occupancy; and

          (3) Acceptance of the completed Improvements by Lender and Borrower.

     Construction Default. If Borrower fails in any respect to comply with the
     provisions of this Agreement or if construction ceases before completion
     regardless of the reason, Lender, at its option, may refuse to make further
     Advances, may accelerate the indebtedness under the terms of the Note, and
     without thereby impairing any of its rights, powers, or privileges, may
     enter into possession of the construction site and perform or cause to be
     performed any and all work and labor necessary to complete the
     improvements, substantially in accordance with the Plans and
     Specifications.

     Damage or Destruction. If any of the Collateral or Improvements is damaged
     or destroyed by casualty of any nature, within sixty (60) days thereafter
     Borrower shall restore the Collateral and Improvements to the condition in
     which they were before such damage or destruction with funds other than
     those in the Loan Fund. Lender shall not be obligated to make disbursements
     under this Agreement until such restoration has been accomplished.

     Adequate Security. When any event occurs that Lender determines may
     endanger completion of the Project or the fulfillment of any condition or
     covenant in this Agreement, Lender may require Borrower to furnish, within
     ten (10) days after delivery of a written request, adequate security to
     eliminate, reduce, or indemnify Lender against, such danger. In addition,
     upon such occurrence, Lender in its sole discretion may advance funds or
     agree to undertake to advance funds to any party to eliminate, reduce, or
     indemnify Lender against, such danger or to complete the Project. All sums
     paid by Lender pursuant to such agreements or undertakings shall be for
     Borrower's account and shall be without prejudice to Borrower's rights, if
     any, to receive such funds from the party to whom paid. All sums expended
     by Lender in the exercise of its option to complete the Project or protect
     Lender's interests shall be payable to Lender on demand together with
     interest from the date of the Advance at the rate applicable to the Loan.
     In addition, any Advance of funds under this Agreement, including without
     limitation direct disbursements to the General Contractor or other parties
     in payment of sums due under the Construction Contract, shall be deemed to
     have been expended by or on behalf of Borrower and to have been secured by
     Lender's Deeds of Trust, if any, on the Collateral.

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.

LIMITATION OF RESPONSIBILITY. The making of any Advance by Lender shall not
constitute or be interpreted as either (A) an approval or acceptance by Lender
of the work done through the date of the Advance, or (B) a representation or
indemnity by Lender to any party against any deficiency or defect in the work
or against any breach of contract. Inspections and approvals of the Plans and
Specifications, the Improvements, the workmanship and materials used in the
Improvements, and the exercise of any other right of inspection, approval, or
inquiry granted to Lender in this Agreement are acknowledged to be solely for
the protection of Lender's interests, and under no circumstances shall they be
construed to impose any responsibility or liability of any nature whatsoever on
Lender to any party. Neither Borrower nor any contractor, subcontractor,
materialman, laborer, or any other person shall rely, or have any right to rely,
upon Lender's determination of the appropriateness of any Advance. No
disbursement or approval by Lender shall constitute a representation by Lender
as to the nature of the Project, its construction, or its intended use for
Borrower or for any other person, nor shall it constitute an indemnity by Lender
to Borrower or to any other person against any deficiency or defects in the
Project or against any breach of any contract.

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

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                   (Continued)                              Page 5
================================================================================

     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 in form satisfactory to Lender.

          Tax Returns. As soon as available after the applicable filing date for
          the tax reporting period ended, Federal and other governmental
          returns, prepared by a tax professional satisfactory to Lender.

          Additional Requirements. ANNUAL BUDGET, PROJECTIONS AND EQUIPMENT
          LIST; SEMI-ANNUAL ACCOUNTS RECEIVABLE/PAYABLE LISTING.

     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,
     list of assets and liabilities, agings of receivables and payables,
     inventory schedules, budgets, forecasts, tax returns, and other reports
     with respect to Borrower's financial condition and business operations as
     Lender may request from time to time.

     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.

     Insurance. Maintain fire and other risk insurance, hail, federal crop
     insurance, public liability insurance, and such other insurance as Lender
     may require with respect to Borrower's properties and operations, in form,
     amounts, coverages and with insurance companies acceptable to Lender.
     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.

     Loan Fees, Charges and Expenses. Whether or not the Project is completed,
     Borrower also shall pay upon demand all reasonable out-of-pocket expenses
     incurred by Lender in connection with the preparation of loan documents and
     the making of the Loan, including, without limitation, all closing costs,
     fees, and disbursements, all expenses of Lender's legal counsel, and all
     title examination fees, title insurance premiums, appraisal fees, survey
     costs, required fees, and filing and recording fees.

     Loan Proceeds. Use all Loan proceeds solely for the following specific
     purposes: ALL MONIES ADVANCED WILL BE USED SOLELY TO CONSTRUCT THE 20 MGY
     CAPACITY ETHANOL PLANT LOCATED IN PLAINVIEW, NEBRASKA, INCLUDING OPERATING
     COSTS AS SET FORTH IN BORROWER'S BUDGET.

     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.

     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.

     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, at all Borrower's
     expense.

     Compliance Certificates. Unless waived in writing by Lender, provide Lender
     at least annually, with a certificate executed by Borrower's chief
     financial officer, or other officer or person acceptable to Lender,
     certifying that the representations and warranties set forth in this
     Agreement are true and correct as of the date of the certificate and
     further certifying that, as of the date of the certificate, no Event of
     Default exists under this Agreement.

     Construction of the Project. Commence construction of the Project no later
     than December 19, 2001, and cause the Improvements to be constructed and
     equipped in a diligent and orderly manner and in strict accordance with the
     Plans and Specifications approved by Lender, the Construction Contract, and
     all applicable laws, ordinances, codes, regulations, and rights of
     adjoining of concurrent property owners. Borrower agrees to complete the
     Project for purposes of final payment to the General Contractor on or
     before June 19, 2003, regardless of the reason for any delay.

     Defects. Upon demand of Lender, promptly correct any defect in the
     Improvements or any departure from the Plans and Specifications not
     approved by Lender in writing before further work shall be done upon the
     portion of the Improvements affected.

     Project Claims and Litigation. Promptly inform Lender of (1) all material
     adverse changes in the financial condition of the General Contractor; (2)
     any litigation and claims, actual or threatened, affecting the Project or
     the General Contractor, which could materially affect the successful
     completion of the Project or the ability of the General Contractor to
     complete the Project as agreed; and (3) any condition or event which
     constitutes a breach of default under any of the Related Documents or any
     contract related to the Project.

     Payment of Claims and Removal of Liens. (1) Cause all claims for labor done
     and materials and services furnished in connection with the Improvements to
     be fully paid and discharged in a timely manner, (2) diligently file or
     procure the filing of a valid note of completion of the Improvements, or
     such comparable document as may be permitted under applicable lien laws,
     (3) diligently file or procure the filing of a notice of

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                    (Continued)                             Page 6
================================================================================

     cessation, or such comparable document as may be permitted under applicable
     lien laws, upon the happening of cessation of labor on the Improvements for
     a continuous period of thirty (30) days or more, and (4) take all
     reasonable steps necessary to remove all claims of liens against the
     Collateral, the Improvements or any part of the Collateral or Improvements,
     or any rights or interests appurtenant to the Collateral or Improvements.
     Upon Lender's request, Borrower shall make such demands or claims upon or
     against laborers, materialmen, subcontractors, or other persons who have
     furnished or claim to have furnished labor, services, or materials in
     connection with the Improvements, which demands or claims shall under the
     laws of the State of Minnesota require diligent assertions of lien claims
     upon penalty of loss or waiver thereof. Borrower shall, within ten (10)
     days after the filing of any claim of lien that is disputed or contested by
     Borrower, provide Lender with a surety bond issued by a surety acceptable
     to Lender sufficient to release the claim of lien or deposit with Lender an
     amount satisfactory to Lender for the possibility that the contest will be
     unsuccessful. If Borrower fails to remove any lien on the Collateral or
     Improvements or provide a bond or deposit pursuant to this provision,
     Lender may pay such lien, or may contest the validity of the lien, and
     Borrower shall pay all costs and expenses of such contest, including
     Lender's reasonable attorneys' fees.

     Taxes and Claims. Pay and discharge when due all of Borrower's
     indebtedness, obligations, and claims that, if unpaid, might become a lien
     or charge upon the Collateral or Improvements; provided, however, that
     Borrower shall not be required to pay and discharge any such indebtedness,
     obligation, or claim so long as (1) its legality shall be contested in good
     faith by appropriate proceedings, (2) the indebtedness, obligation, or
     claim does not become a lien or charge upon the Collateral or Improvements,
     and (3) Borrower shall have established on its books adequate reserves with
     respect to the amount contested in accordance with GAAP. If the
     indebtedness, obligation, or claim does become a lien or charge upon the
     Collateral or Improvements, Borrower shall remove the lien or charge as
     provided in the preceding paragraph.

     Environmental Statutes. 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.

     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 in the Collateral and Improvements.

LENDER'S EXPENDITURES. If any action or proceeding is commenced that would
materially affect the 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 incurred or paid by Lender for such purposes will then bear
interest at a rate charged under the Note from the date incurred or paid by
Lender to the date of repayment by Borrower. 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 in 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) make any
     distribution with respect to any capital account, whether by reduction of
     capital or otherwise.

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

     Modification of Contract. Make or permit to be made any modification of the
     Construction Contract.

     Liens. Create or allow to be created any lien or charge upon the Collateral
     or the Improvements.

GENERAL PROJECT PROVISIONS. The following provisions relate to the construction
and completion of the Project:

     Change Orders. All requests for changes in the Plans and Specifications,
     other than minor changes involving no extra cost, must be in writing,
     signed by Borrower and the architect, and delivered to Lender for its
     approval. Borrower will not permit the performance of any work pursuant to
     any change order or modification of the Construction Contract or any
     subcontract without the written approval of Lender. Borrower will obtain
     any required permits or authorizations from governmental authorities having
     jurisdiction before approving or requesting a new change order.

     Purchase of Materials; Conditional Sales Contracts. No materials,
     equipment, fixtures, or articles of personal property placed in or
     incorporated into the Project shall be purchased or installed under any
     Security Agreement or other agreement whereby the seller reserves or
     purports to reserve title or the right of removal or repossession, or the
     right to consider such items as personal property after their incorporation
     into the Project, unless otherwise authorized by Lender in writing.

     Lender's Right of Entry and Inspection. Lender and its agents shall have at
     all times the right of entry and free access to the Property and the right
     to inspect all work done, labor performed, and materials furnished with
     respect to the Project. Lender shall have unrestricted access to and the
     right to copy all records, accounting books, contracts, subcontracts,
     bills, statements, vouchers, and supporting documents of Borrower relating
     in any way to the Project.

     Lender's Right to Stop Work. If Lender in good faith determines that any
     work or materials do not conform to the approved Plans and Specifications
     or sound building practices, or otherwise depart from any of the
     requirements of this Agreement, Lender may require the work to be stopped
     and withhold disbursements until the matter is corrected. In such event,
     Borrower will promptly correct the work to Lender's satisfaction. No such
     action by Lender will affect Borrower's obligation to complete the
     Improvements on or before the Completion Date. Lender is under no duty to
     supervise or inspect the construction or examine any books and records. Any
     inspection or examination by Lender is for the sole purpose of protecting
     Lender's security and preserving Lender's rights under this Agreement. No
     default of Borrower will be waived by any inspection by Lender. In no event
     will any inspection by Lender be a representation that there has been or
     will be compliance with the Plans and Specifications or that the
     construction is free from defective materials or workmanship.

     Indemnity. Borrower shall indemnify and hold Lender harmless from any and
     all claims asserted against Lender or the Property by any person, entity,
     or governmental body, or arising out of or in connection with the Property,
     Improvements, or Project. Lender shall be entitled to appear in

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                    (Continued)                             Page 7
================================================================================

     any proceedings to defend itself against such claims, and all costs and
     expenses reasonable attorneys' fees incurred by Lender in connection with
     such defense shall be paid by Borrower to Lender. Lender shall, in its sole
     discretion, be entitled to settle or compromise any asserted claims against
     it, and such settlement shall be binding upon Borrower for purposes of this
     indemnification. All amounts paid by Lender under this paragraph shall be
     secured by Lender's security agreement or Deeds of Trust, if any, on the
     Property, shall be deemed an additional principal Advance under the Loan,
     payable upon demand, and shall bear interest at the rate applicable to the
     Loan.

     Publicity. Lender may display a sign at the construction site informing the
     public that Lender is the construction lender for the Project. Lender may
     obtain other publicity in connection with the Project through press
     releases and participation in ground-breaking and opening ceremonies and
     similar events.

     Actions. Lender shall have the right to commence, appear in, or defend any
     action or proceeding purporting to affect the rights, duties, or
     liabilities of the parties to this Agreement, or the disbursement of funds
     from the Loan Fund. In connection with this right, Lender may incur and pay
     reasonable costs, expenses and reasonable attorneys' fees. Borrower
     covenants to pay Lender on demand all such expenses, together with interest
     from the date Lender incurs the expense at the rate specified in the Note,
     and Lender is authorized to disburse funds from the Loan Fund for such
     purposes.

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
Indebtedness 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, covenant or
     condition contained in any other agreement between Lender and Borrower.

     Default in Favor of Third Parties. Borrower or any Grantor defaults under
     any loan, extension of credit, security agreement, purchase or sales
     agreement, or any other agreement, in favor of any other creditor or person
     that may materially affect any of Borrower's or any Grantor's property or
     Borrower's or any Grantor's ability to repay the Loans or perform their
     respective obligations under this Agreement or any of the Related
     Documents.

     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 of Borrower (regardless of whether election to
     continue is made), or any other 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 proceedings, 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
     proceedings 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.

     Breach of Construction Contract. The Improvements are not constructed in
     accordance with the Plans and Specifications or in accordance with the
     terms of the Construction Contract, provided such noncompliance is material
     or has not been consented to in writing.

     Cessation of Construction. Prior to the completion of construction of the
     Improvements and equipping of the Project, the construction of the
     Improvements or the equipping of the Project is abandoned or work thereon
     ceases for a period of more than ten (10) days for any reason, or the
     Improvements are not completed for purposes of final payment to the General
     Contractor prior to June 19, 2003, regardless of the reason for the delay.

     Transfer of Property. Sale, transfer, hypothecation, assignment, or
     conveyance of the Property or the Improvements or any portion thereof or
     interest therein by Borrower or any Borrower without Lender's prior written
     consent.

     Condemnation. All or any material portion of the Collateral is condemned,
     seized, or appropriated without compensation, and Borrower does not within
     thirty (30) days after such condemnation, seizure, or appropriation,
     initiate and diligently prosecute appropriate action to contest in good
     faith the validity of such condemnation, seizure, or appropriation.

     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.

     Right to Cure. If any default, other than a default on Indebtedness, is
     curable and if Borrower or Grantor, as the case may be, has not been given
     a notice of a similar default within the preceding twelve (12) months, it
     may be cured (and no Event of Default will have occurred) if Borrower or
     Grantor, as the case may be, after receiving written notice from Lender
     demanding cure of such default: (1) cure the default within fifteen (15)
     days; or (2) if the cure requires more than fifteen (15) days, immediately
     initiate steps which Lender deems in Lender's sole discretion to be
     sufficient to cure the default and thereafter continue and complete all
     reasonable and necessary steps sufficient to produce compliance as soon as
     reasonably practicable.

EFFECT OF AN EVENT OF DEFAULT; REMEDIES. Upon the occurrence of any Event of
Default and at any time thereafter, Lender may, at its option,

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                    (Continued)                             Page 8
================================================================================

but without any obligation to do so, and in addition to any other right Lender
without notice to Borrower may have, do any one or more of the following without
notice to Borrower; (a) Cancel this Agreement; (b) Institute appropriate
proceedings to enforce the performance of this Agreement; (c) Withhold further
disbursement of Loan Funds; (d) Expend funds necessary to remedy the default;
(e) Take possession of the Property and continue construction of the Project;
(f) Accelerate maturity of the Note and/or Indebtedness and demand payment of
all sums due under the Note and/or Indebtedness; (g) Bring an action on the Note
and/or Indebtedness; (h) Foreclose Lender's security agreement or Deeds of
Trust, if any, on the Property in any manner available under law; and (i)
Exercise any other right or remedy which it has under the Note or Related
Documents, or which is otherwise available at law or in equity by statute.

COMPLETION OF IMPROVEMENTS BY LENDER. If Lender takes possession of the
Collateral, it may take any and all actions necessary in its judgment to
complete construction of the Improvements, including but not limited to making
changes in the Plans and Specifications, work, or materials and entering into,
modifying or terminating any contractual arrangements, subject to Lender's right
at any time to discontinue any work without liability. If Lender elects to
complete the Improvements, it will not assume any liability to Borrower or to
any other person for completing the Improvements or for the manner or quality of
construction of the Improvements, and Borrower expressly waives any such
liability. Borrower irrevocably appoints Lender as its attorney-in-fact, with
full power of substitution, to complete the Improvements, at Lender's option,
either in Borrower's name or in its own name. In any event, all sums expended by
Lender in completing the construction of the Improvements will be considered to
have been disbursed to Borrower and will be secured by the Collateral for the
Loan. Any such sums that cause the principal amount of the Loan to exceed the
face amount of the Note will be considered as an additional Loan to Borrower,
bearing interest at the Note rate and being secured by the Collateral. For these
purposes, Borrower assigns to Lender all of its right, title and interest in and
to the Project Documents; however Lender will not have any obligation under the
Project Documents unless Lender expressly hereafter agrees to assume such
obligations in writing. Lender will have the right to exercise any rights of
Borrower under the Project Documents upon the occurrence of any Event of
Default. Except as may be prohibited by applicable law, all of Lender's rights
and remedies, whether evidenced by this Agreement or any other writing, shall be
cumulative and may be exercised singularly or concurrently.

ADDITIONAL DOCUMENTS. Borrower shall provide Lender with the following
additional documents.

     Articles of Organization and Company Resolutions. Borrower has provided or
     will provide Lender with a certified copy of Borrower's Articles of
     Organization, together with a certified copy of resolutions properly
     adopted by the Directors of the company, under which the Directors
     authorized one or more designated members or employees to execute this
     Agreement, the Note and any and all Security Agreements directly or
     indirectly securing repayment of the same, and to consummate the borrowings
     and other transactions as contemplated under this Agreement, and to consent
     to the remedies following any default by Borrower as provided in this
     Agreement and in any Security Agreements.

     Opinion of Counsel. When required by Lender, Borrower has provided or will
     provide Lender with an opinion of Borrower's counsel certifying to and
     that: (1) Borrower's Note, any Security Agreements and this Agreement
     constitute valid and binding obligations on Borrower's part that are
     enforceable in accordance with their respective terms; (2) Borrower is
     validly existing and in good standing; (3) Borrower has authority to enter
     into this Agreement and to consummate the transactions contemplated under
     this Agreement; and (4) such other matters as may have been requested by
     Lender or by Lender's counsel.

CONSTRUCTION LOAN AGREEMENT PROVISION. BORROWER HEREBY SELLS, ASSIGNS,
TRANSFERS, AND SETS OVER TO LENDER, ALL OF ITS RIGHT, TITLE, AND INTEREST IN AND
TO ALL CONSTRUCTION, MATERIAL, MANAGEMENT, SUPPLY CONTRACTS, SURETY BONDS AND
ALL PLANS, SPECIFICATIONS, DRAWINGS AND DOCUMENTS, TOGETHER WITH ALL
MODIFICATIONS, AMENDMENTS, SUPPLEMENTS, GENERAL CONDITIONS AND ADDENDA THERETO
(COLLECTIVELY, THE "CONTRACTS") RELATED TO THE CONSTRUCTION, MANAGEMENT AND
OPERATION OF THE PROJECT. BORROWER AGREES THAT LENDER DOES NOT ASSUME ANY OF
BORROWER'S OBLIGATIONS OR DUTIES CONCERNING THE CONTRACTS UNTIL AND UNLESS
LENDER SHALL HAVE GIVEN TO BORROWER WRITTEN NOTICE THAT IT HAS AFFIRMATIVELY
EXERCISED ITS RIGHT TO COMPLETE OR CAUSE THE COMPLETION OF CONSTRUCTION OF THE
PROJECT UPON OR AFTER THE OCCURRENCE OF AN EVENT OF DEFAULT UNDER THE NOTE AND
MORTGAGE.

THIS ASSIGNMENT IS FOR SECURITY PURPOSES ONLY. ACCORDINGLY, LENDER SHALL HAVE NO
RIGHT UNDER THIS AGREEMENT TO ENFORCE BORROWER'S RIGHT WITH RESPECT TO THE PLANS
OR THE CONTRACT UNTIL BORROWER SHALL BE IN DEFAULT UNDER ANY OF ITS OBLIGATIONS
TO LENDER UNDER ANY INSTRUMENT, DOCUMENT, OR AGREEMENT RELATED TO THE PROJECT OR
TO THE NOTE. UPON THE OCCURRENCE OF ANY SUCH DEFAULT, LENDER MAY, WITHOUT
AFFECTING ANY OF ITS RIGHTS OR REMEDIES AGAINST BORROWER UNDER ANY OTHER
INSTRUMENT, DOCUMENT, OR AGREEMENT, EXERCISE ITS RIGHT UNDER THIS ASSIGNMENT AS
BORROWER'S ATTORNEY-IN-FACT OR IN ANY OTHER MANNER PERMITTED BY LAW, AND IN
ADDITION, LENDER SHALL HAVE AND POSSESS, WITHOUT LIMITATION, ANY AND ALL RIGHTS
AND REMEDIES OF A SECURED PARTY UNDER THE UNIFORM COMMERCIAL CODE OR OTHERWISE
PROVIDED BY LAW.

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 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 shall also pay
     all court costs and such additional fees as may be directed by the court.

     Authority to File Notices. Borrower appoints and designates Lender as its
     attorney-in-fact to file for the record any notice that Lender deems
     necessary to protect its interest under this Agreement. This power shall be
     deemed coupled with an interest and shall be irrevocable while any sum or
     performance remains due and owing under any of the Related Documents.

     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.

     Governing Law. This Agreement will be governed by, construed and enforced
     in accordance with federal law and the laws of the State of Minnesota. This
     Agreement has been accepted by Lender in the State of Minnesota.

     Indemnification of Lender. Borrower agrees to indemnify, to defend and to
     save and hold Lender harmless from any and all claims, suits, obligations,
     damages, losses, costs and expenses (including, without limitation,
     Lender's reasonable attorneys' fees, as well as Lender's architect's and
     engineering fees), demands, liabilities, penalties, fines and forfeitures
     of any nature whatsoever that may be asserted against or incurred by
     Lender, its officers, directors, employees, and agents arising out of,
     relating to, or in any manner occasioned by this Agreement and the exercise
     of the rights and remedies granted Lender under this. The foregoing
     indemnity provisions shall survive the cancellation of this Agreement as to
     all matters arising or accruing prior to such cancellation and the
     foregoing indemnity shall survive in the event that Lender elects to
     exercise any of the remedies as provided under this Agreement following
     default thereunder.

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                     (Continued)                            Page 9
================================================================================

     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 purchases, 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
     purchase 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 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.

     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 such 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
     wavier 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.

     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.

     Successors and Assigns. All covenants and agreements contained by or on
     behalf of Borrower 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 of 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, 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 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 Construction Loan Agreement, as
     this Construction Loan Agreement may be amended or modified from time to
     time, together with all exhibits and schedules attached to this
     Construction Loan Agreement from time to time.

     Architecture Contract. The words "Architecture Contract" mean the
     architect's contract between Borrower and the Architect for the Project.

     Borrower. The word "Borrower" means HUSKER AG PROCESSING, LLC, and all
     other persons and entities signing the Note in whatever capacity.

     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.

     Completion Date. The words "Completion Date" mean June 19, 2003.

     Construction Contract. The words "Construction Contract" mean the contract
     between Borrower and FAGEN, INC., the general contractor for the Project,
     and any subcontracts with subcontractors, materialmen, laborers, or any
     other person or entity for performance of work on the Project or the
     delivery of materials to the Project.

     Contractor. The word "Contractor" means FAGEN, INC., the general contractor
     for the Project.

     Environmental Laws. The words "Environmental Laws" mean 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 or common law, and shall also include
     pollutants, contaminants, polychlorinated biphenyls, asbestos, urea
     formaldehyde, petroleum and petroleum products, and agricultural chemicals.

     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.

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                     (Continued)                           Page 10
================================================================================

     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 and any guarantor under a
     completion guaranty agreement.

     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 broadcast sense and
     include without limitation any and all hazardous toxic substances,
     materials or waste as defined by or listed under the Environmental Laws.
     The term "Hazardous Substances" are includes, without limitation, petroleum
     and petroleum by-products or any fraction thereof and asbestos.

     Improvements. The word "Improvements" means all existing and future
     building, structures, facilities, fixtures, additions, and similar
     construction on the Collateral.

     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 STEARNS BANK NATIONAL ASSOCIATION, its
     successors and assigns.

     Loan. The word "Loan" means the loan or loans made to Borrower under this
     Agreement and the Related Documents as described.

     Loan Fund. The words "Loan Fund" mean the undisbursed proceeds of the Loan
     under this Agreement together with any equity funds or other deposits
     required from Borrower under this Agreement.

     Note. The word "Note" means the promissory note dated December 19, 2001, in
     the original principal amount of $20,000,000.00 from Borrower to Lender,
     together with all renewals of, extensions of, modifications of,
     refinancings of, consolidations of, and substitutions for the promissory
     note or 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 is in the aggregate constitute
     an immaterial and insignificant monetary amount with respect to the net
     value of Borrower's assets.

     Plans and Specifications. The words "Plans and Specifications" means the
     plans and specifications for the Project which have been submitted to and
     initialed by Lender, together with such changes and additions as may be
     approved by Lender in writing.

     Project. The word "Project" means the construction project as described in
     the "Project Description" section of this Agreement.

     Project Documents. The words "Project Documents" mean the Plans and
     Specifications, all studies, data and drawings relating to the Project,
     whether prepared by or for Borrower, the Construction Contract, the
     Architecture Contract, and all other contracts and agreements relating to
     the Project or the construction of the Improvements.

     Property. The word "Property" means the property as described in the
     "Project Description" section of this Agreement.

     Real Property. The words "Real Property" mean the real property, interests
     and rights, as further described in the "Project Description" section of
     this Agreement.

     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.

<PAGE>

                          CONSTRUCTION LOAN AGREEMENT
Loan No: 53455                    (Continued)                            Page 11
================================================================================

BORROWER ACKNOWLEDGES HAVING READ ALL THE PROVISIONS OF THIS CONSTRUCTION LOAN
AGREEMENT AND BORROWER AGREES TO ITS TERMS. THIS CONSTRUCTION LOAN AGREEMENT IS
DATED DECEMBER 19, 2001.

THIS AGREEMENT IS GIVEN UNDER SEAL AND IT IS INTENDED THAT THIS AGREEMENT IS AND
SHALL CONSTITUTE AND HAVE THE EFFECT OF A SEALED INSTRUMENT ACCORDING TO LAW.

BORROWER:
<TABLE>
<CAPTION>
<S>                                                <C>
HUSKER AG PROCESSING, LLC

By: /s/  Gary Kuester                       (Seal)   By: /s/ Jack Frahm                 (Seal)
   -----------------------------------------            --------------------------------
     GARY KUESTER, Chairman of HUSKER AG                   JACK FRAHM, Secretary of HUSKER AG
     PROCESSING, LLC                                       PROCESSING, LLC

By:  /s/ Fred Knievel                       (Seal)
   -----------------------------------------
     FRED KNIEVEL, Treasurer of HUSKER AG
     PROCESSING, LLC

LENDER:

STEARNS BANK NATIONAL ASSOCIATION

By: /s/ XXXXXXXXXX                           (Seal)
   -----------------------------------------
   Authorized Signer
</TABLE>

================================================================================

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