MAGNUM RESOURCES INC /DE/
10QSB, 1998-01-08
CONSTRUCTION, MINING & MATERIALS HANDLING MACHINERY & EQUIP
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                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                   FORM 10-QSB

                   Quarterly Report Under Section 13 or 15(d)
                     of the Securities Exchange Act of 1934

                     For the Quarter Ended October 31, 1997

                         Commission File Number: 0-22990

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

                             MAGNUM RESOURCES, INC.

             (Exact name of registrant as specified in its charter)

                 DELAWARE                        87-0368628
        (State of incorporation)    (I.R.S. Employer Identification No.)

                       1750 Yankee Doodle Road, Suite 202
                                 Eagan, MN 55121
                                 (612) 405 9247

     (Address, including zip code, and telephone number including area code,
                         of Issuer's executive offices)

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

           Securities registered pursuant to Section 12(b) of the Act:

       Title of each class             Name of each exchange on which registered
              None                                       None

           Securities registered pursuant to Section 12(g) of the Act:

                          COMMON STOCK, $.01 PAR VALUE

Check whether the issuer (1) filed all reports required to be filed by Section
13 or 15(d) of the Exchange Act during the past 12 months (or for shorter period
that the registrant was required to file such reports), and (2) has been subject
to such filing requirements for the past 90 days.
Yes __X__   No___

State the number of shares outstanding of each of the issuer's classes of common
equity, as of the latest practicable date: As of December 12, 1997 - 10,354,337.

Transitional Small Business Disclosure Format (Alternative 2):

Yes __X__   No___

<PAGE>


                         PART I - FINANCIAL INFORMATION

ITEM 1. - Financial Statements

                             MAGNUM RESOURCES, INC.
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                                   (UNAUDITED)

                                             October 31,      July 31,
Assets                                          1997            1997
- ------                                      -----------     -----------

Current assets:
 Cash                                       $     2,000     $     7,000
 Accounts receivable, net                     1,835,000       1,455,000
 Inventories                                  1,962,000       1,845,000
 Prepaid expenses                                84,000          66,000
                                            -----------     -----------
         Total current assets                 3,883,000       3,373,000

Property, plant & equipment, net              2,268,000       2,009,000
Other assets                                     97,000          41,000
                                            -----------     -----------
         Total assets                       $ 6,248,000     $ 5,423,000
                                            ===========     ===========

Liabilities & Stockholders' Equity
Current liabilities:
 Current maturities of
         long-term obligations              $   150,000     $   144,000
Accounts payable                              1,444,000       1,187,000
 Revolving note payable to bank               1,451,000       1,190,000
 Accrued liabilities                            481,000         489,000
                                            -----------     -----------
         Total current liabilities            3,526,000       3,010,000

Long-term obligations, less current
 maturities                                     707,000         434,000
Deferred income taxes                            81,000          84,000
                                            -----------     -----------

         Total liabilities                    4,314,000       3,528,000

Stockholders' Equity:
 Preferred stock, par value $.01 per
  share; 5,000,000 shares authorized,
  no shares issued or outstanding                   -0-             -0-

Common stock, par value $.01 per
 share, 50,000,000 shares authorized;
 10,354,337 shares issued and
 outstanding at October 31, 1997
 and at July 31, 1997                           104,000         104,000

Additional paid in capital                    7,872,000       7,872,000

Accumulated deficit                          (6,042,000)     (6,081,000)
                                            -----------     -----------

         Total stockholders' equity           1,934,000       1,895,000
                                            -----------     -----------

Total Liabilities & Stockholders' Equity    $ 6,248,000     $ 5,423,000
                                            ===========     ===========

      See Accompanying Notes to Condensed Consolidated Financial Statements

<PAGE>


                             MAGNUM RESOURCES, INC.

                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (UNAUDITED)

                                     Three Months Ended
                                        October 31,
                                   1997             1996
                              ------------     ------------

Net sales                     $  3,744,000     $  2,247,000
Cost of goods sold               3,046,000        1,714,000
                              ------------     ------------

       Gross profit                698,000          533,000

Operating expenses:
 Selling, general
  and administration               518,000          431,000
 Research, development
  and engineering                   51,000           42,000
                              ------------     ------------

Operating  profit                  129,000           60,000


Other income (expense):

Interest expense, net              (96,000)         (20,000)
Other                                3,000            4,000
                              ------------     ------------

Income  before
 income taxes                       36,000           44,000

Income tax benefit                   3,000            3,000
                              ------------     ------------

Net Income                    $     39,000     $     47,000
                              ============     ============

Net income per share          $       0.00     $       0.00
                              ============     ============

Weighted average number of
 common shares outstanding      10,354,337       10,252,337
                              ============     ============

      See Accompanying Notes to Condensed Consolidated Financial Statements

<PAGE>


                             MAGNUM RESOURCES, INC.

                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)

                                                        Three Months Ended
                                                            October 31,
                                                        1997          1996
                                                     ---------     ---------

Cash flows from operating activities:
 Net income                                          $  39,000     $  47,000
 Adjustments to reconcile net income
  to net cash from operations:
 Depreciation & amortization                            87,000        59,000
Deferred income taxes                                   (3,000)       (3,000)
 Changes in operating assets and liabilities:
   Accounts receivable                                (380,000)     (407,000)
   Inventories                                        (117,000)      (79,000)
   Prepaid expenses                                    (18,000)        6,000
   Accounts payable                                    257,000       281,000
   Accrued liabilities                                  (8,000)       (6,000)
                                                     ---------     ---------
Net cash used in operating activities                 (143,000)     (102,000)

Cash flows from investing activities:
 Purchase of property, plant & equipment              (346,000)     (192,000)
Other assets                                           (56,000)            0
                                                     ---------     ---------
Net cash used in investing activities                 (402,000)     (192,000)

Cash flows from financing activities:
 Proceeds from long-term financing                     311,000        16,000
 Proceeds from revolving note payable
   to bank, net of repayments                          261,000       360,000
Payments on long-term obligations                      (32,000)      (88,000)
                                                     ---------     ---------
Net cash provided by investing activities              540,000       288,000
                                                     ---------     ---------

Net decrease in cash                                    (5,000)       (6,000)

         Cash at beginning of period                     7,000        12,000
                                                     ---------     ---------
         Cash at end of period                       $   2,000     $   6,000
                                                     =========     =========

Supplemental disclosure of cash flow information:

 Cash paid during the period for interest            $  73,000     $  15,000
                                                     =========     =========

      See Accompanying Notes to Condensed Consolidated Financial Statements

<PAGE>


                             MAGNUM RESOURCES, INC.

              Notes to Condensed Consolidated Financial Statements

                                   (UNAUDITED)

NOTE A:  BASIS OF PRESENTATION

The unaudited condensed consolidated financial statements include the accounts
of Magnum Resources, Inc. (`the Company') and its wholly-owned subsidiaries.
These statements and related notes have been prepared pursuant to the rules and
regulations of the U.S. Securities and Exchange Commission. Accordingly, certain
information and footnote disclosures normally included in the financial
statements prepared in accordance with generally accepted accounting principles
have been omitted pursuant to such rules and regulations. The accompanying
condensed consolidated financial statements and related notes should be read in
conjunction with the audited financial statements of the Company, and notes
thereto, for the fiscal year ended July 31, 1997. The following information
reflects, in the opinion of management, all adjustments, consisting of normal
recurring accruals, necessary for a fair presentation of the interim period
results. Operating results for interim periods are not necessarily indicative of
results which may be expected for the year as a whole.

USE OF ESTIMATES

Preparation of the Company's financial statements requires management to make
estimates and assumptions that affect reported amounts of assets and liabilities
and related revenues and expenses. Actual results could differ from estimates
used by management.

EARNINGS PER SHARE

The Financial Accounting Standards Board has issued Statement of Financial
Accounting Standards No. 128, Earnings Per Share, which is effective for
financial statements issued after December 15, 1997. Early adoption of the new
standard is not permitted. The new standard eliminates primary and fully diluted
earnings per share and requires presentation of basic and diluted earnings per
share together with disclosure of how the per share amounts were computed. The
Company has not yet determined what impact this statement will have on the
Company's financial statements.

RECLASSIFICATIONS

Certain 1996 amounts have been reclassified to conform with 1997 presentation.

<PAGE>


                             MAGNUM RESOURCES, INC.

PART II - OTHER INFORMATION


ITEM 4. - SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

ITEM 5 - OTHER MATTERS

During the quarter ended October 31, 1997, the Company utilized its line of
credit extensively to finance its growth. The line of credit bears interest at
Norwest Bank's prime rate + 6 1/2%. In addition to the interest cost with the
line of credit, many of the Company's dealers purchased equipment utilizing
company supported finance options (floorplans). The combined interest cost
associated with the borrowings under the line of credit and the dealer
participation in the floorplan financing, caused interest expense to increase
from $20,000 in the first quarter of 1996 to $96,000 in the first quarter of
1997. The Company expects interest expense to remain high in periods of revenue
growth.

In November 1997, the Company established a series of credit facilities for each
of its principal operating subsidiaries. Each line of credit is separately
maintained and is subject to separate security agreements covering most of the
assets of each corporation. The aggregate amount available under these lines is
$1,800,000.

ITEM 6. - EXHIBITS AND REPORTS ON FORM 8-K

         (A)      Exhibits

                  6.1 Revolving Credit facility for Magnum Resources and
                  subsidiaries dated November 25, 1997.

                  27.2 Financial Data Schedule

         (B)      Reports on Form 8-K

                  None

<PAGE>


                                    SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.

                                     MAGNUM RESOURCES, INC.
                                         (Registrant)


Date: January 6, 1998                BY:   /s/ John F. Luoma
                                         ----------------------
                                          John F. Luoma
                                          Chief Executive Officer


                                          BY:   /s/ David M. Eichers
                                              ----------------------
                                          David M. Eichers
                                          Secretary and Chief Accounting Officer





                    MAGNUM RESOURCES, INC. AND SUBSIDIARIES
EXHIBIT 6.1  Revolving Credit facility for Magnum Resources and Subsidiaries
                             dated November 25, 1997
                                    10/31/97

                          CREDIT AND SECURITY AGREEMENT
                          Dated as of November 25, 1997

                  D&E MACHINING, INC., a North Dakota corporation (the
"Borrower"), and NORWEST CREDIT, INC., a Minnesota corporation (the "Lender"),
hereby agree as follows:

                                   ARTICLE I

                                   Definitions

                  Section 1.1 Definitions. For all purposes of this Agreement,
except as otherwise expressly provided or unless the context otherwise requires:

                  "Accounts" means the aggregate unpaid obligations of customers
         and other account debtors to the Borrower arising out of the sale or
         lease of goods or rendition of services by the Borrower on an open
         account or deferred payment basis, whether now existing or hereafter
         arising.

                  "Advance" means a Hydra-Mac Revolving Advance, a D&E Revolving
         Advance and a MBS Revolving Advance.

                  "Affiliate" or "Affiliates" means Hydra-Mac, MBS, MRI, Power
         Equipment and any other Person controlled by, controlling or under
         common control with the Borrower, including (without limitation) any
         Subsidiary of the Borrower. For purposes of this definition, "control,"
         when used with respect to any specified Person, means the power to
         direct the management and policies of such Person, directly or
         indirectly, whether through the ownership of voting securities, by
         contract or otherwise.

                  "Agreement" means this Credit and Security Agreement, as
         amended, supplemented and restated from time to time.

                  "Base Rate" means the rate of interest publicly announced from
         time to time by Norwest Bank Minnesota, National Association as its
         "base rate" or, if such bank ceases to announce a rate so designated,
         any similar successor rate designated by the Lender.

                  "Book Net Worth" means the aggregate of the common
         stockholders' equity of the Borrower, determined in accordance with
         GAAP.

                  "Collateral" has the meaning given in Section 3.1.

                  "Collateral Account Agreement" means the Amended and Restated
         Collateral Account Agreement of even date herewith by and among the
         Borrower, Hydra-Mac, MBS, Norwest Bank Minnesota, National Association,
         and the Lender.

                  "D&E Borrowing Base" means the lesser of:

                           (a)      the D&E Maximum Line; or
                           (b)      80% of Eligible Accounts.

                  "D&E Maximum Line" means $200,000.

                  "D&E Revolving Advance" has the meaning given in Section 2.1.

                  "D&E Revolving Note" means the Borrower's revolving promissory
         note, payable to the order of the Lender in substantially the form of
         Exhibit A hereto.

                  "Debt" of any Person means all items of indebtedness or
         liability which in accordance with GAAP would be included in
         determining total liabilities as shown on the liabilities side of a
         balance sheet of that Person as at the date as of which Debt is to be
         determined. For purposes of determining a Person's aggregate Debt at
         any time, "Debt" shall also include the aggregate payments required to
         be made by such Person at any time under any lease that is considered a
         capitalized lease under GAAP.

                  "Default" means an event that, with giving of notice or
         passage of time or both, would constitute an Event of Default.

                  "Default Period" means any period of time beginning on the
         first day of any month during which a Default or Event of Default has
         occurred and ending on the date the Lender notifies the Borrower in
         writing that such Default or Event of Default has been cured or waived.

                  "Default Rate" means an annual rate equal to three and
         one-half percent (3.5%) over the Floating Rate, which rate shall change
         when and as the Floating Rate changes.

                  "Eligible Accounts" means all unpaid Accounts, net of any
         credits, except the following shall not in any event be deemed Eligible
         Accounts:

<PAGE>
                           (i) That portion of Accounts over 90 days past
                  invoice date or, if the Lender in its discretion has
                  determined that a particular dated Account of 120 days or less
                  from invoice date may be eligible, that portion of such
                  Account which is more than 30 days past the stated due date;

                           (ii) That portion of Accounts that are disputed or
                  subject to a claim of offset or a contra account;

                           (iii) That portion of Accounts not yet earned by the
                  final delivery of goods or rendition of services, as
                  applicable, by the Borrower to the customer;

                           (iv) Accounts owed by any unit of government, whether
                  foreign or domestic (provided, however, that there shall be
                  included in Eligible Accounts that portion of Accounts owed by
                  such units of government for which the Borrower has provided
                  evidence satisfactory to the Lender that (A) the Lender has a
                  first priority perfected security interest and (B) such
                  Accounts may be enforced by the Lender directly against such
                  unit of government under all applicable laws);

                           (v) Accounts owed by an account debtor located
                  outside the United States or Canada which are not backed by a
                  bank letter of credit assigned to the Lender, in the
                  possession of the Lender and acceptable to the Lender in all
                  respects, in its sole discretion;

                           (vi) Accounts owed by an account debtor that is the
                  subject of bankruptcy proceedings or has gone out of business;

                           (vii) Accounts owed by a shareholder, subsidiary,
                  Affiliate, officer or employee of the Borrower;

                           (viii) Accounts not subject to a duly perfected
                  security interest in favor of the Lender or which are subject
                  to any lien, security interest or claim in favor of any Person
                  other than the Lender;

                           (ix) That portion of Accounts that have been
                  restructured, extended, amended or modified;

                           (x) That portion of Accounts that constitutes finance
                  charges, service charges or sales or excise taxes; and

                           (xi) Accounts, or portions thereof, otherwise deemed
                  ineligible by the Lender in its sole discretion.

                  "Event of Default" has the meaning specified in Section 7.1.

                  "Floating Rate" means an annual rate equal to the sum of the
         Base Rate plus four and one-half percent (4.5%), which annual rate
         shall change when and as the Base Rate changes.

                  "GAAP" means generally accepted accounting principles, applied
         on a basis consistent with the accounting practices applied in the
         financial statements described in Section 5.2.

                  "Guarantors" means Hydra-Mac, MBS, Power Equipment, MRI and
         any other Person guaranteeing payment of any of the Obligations.

                  "Hydra-Mac" means Hydra-Mac International, Inc., a Delaware
         corporation.

                  "Hydra-Mac Borrowing Base" has the meaning given in the
         Hydra-Mac Credit Agreement.

                  "Hydra-Mac Credit Agreement" means that certain Amended and
         Restated Credit and Security Agreement of even date herewith, by and
         between the Lender and Hydra-Mac, as amended, supplemented and restated
         from time to time.

                  "Hydra-Mac Revolving Advance" has the meaning given in the
         Hydra-Mac Credit Agreement

                  "Inventory" means all of the Borrower's inventory, as such
         term is defined in the UCC, whether now owned or hereafter acquired.

                  "Loan Documents" means this Agreement, the Note, the Security
         Documents and the Disclosure by the Borrower in favor of the Lender of
         even date herewith.

                  "Lockbox Agreement" means the Amended and Restated Lockbox
         Agreement by and among the Borrower, Hydra-Mac, MBS, Norwest Bank
         Minnesota, National Association, and the Lender, of even date herewith.

                  "Maturity Date" has the meaning given in Section 2.4.

                  "Maximum Line" means $1,800,000.

                  "MBS" means Magnum Business Systems, Inc., a [Minnesota]
         corporation.

                  "MBS Borrowing Base" has the meaning given in the MBS Credit
         Agreement.

                  "MBS Credit Agreement" means that certain Credit and Security
         Agreement of even date herewith, by and between MBS and the Lender, as
         amended, supplemented and restated from time to time.

                  "MBS Revolving Advance" has the meaning given in the MBS
         Credit Agreement.

                  "MRI" means Magnum Resources, Inc., a Delaware corporation,
         and the parent of the Borrower, Hydra-Mac and MBS.
<PAGE>


                  "MRI Security Agreement" means the Amended and Restated
         Security Agreement of even date herewith, executed by MRI and delivered
         to the Lender.

                  "Net Income" means fiscal year-to-date after-tax net income,
         decreased by the sum of any extraordinary, non-operating or non-cash
         income recorded by the Borrower and increased by any extraordinary,
         non-cash or non-operating expense or loss recorded by the Borrower, as
         determined in accordance with GAAP.

                  "Note" means the D&E Revolving Note.

                  "Obligations" means each and every debt, liability and
         obligation of every type and description which the Borrower may now or
         at any time hereafter owe to the Lender, including all indebtedness
         arising under this Agreement, the Note or any other loan or credit
         agreement or guaranty between the Borrower and the Lender, whether now
         in effect or hereafter entered into.

                  "Original Maturity Date" means July 10, 1999.

                  "Overall Borrowing Base" means, at any time and subject to
         change from time to time in the Lender's sole discretion, the lesser
         of:

                           (a)      the Maximum Line; or
                           (b)      the sum of the Hydra-Mac Borrowing Base, the
                                    D&E Borrowing Base, and the MBS Borrowing
                  Base.

                  "Person" means any individual, corporation, partnership, joint
         venture, limited liability company, association, joint-stock company,
         trust, unincorporated organization or government or any agency or
         political subdivision thereof.

                  "Power Equipment" means Power Equipment Corp., a Minnesota
         corporation.

                  "Premises" means all premises where the Borrower conducts its
         business and has any rights of possession.

                  "Security Documents" means this Agreement, the Collateral
         Account Agreement and the Lockbox Agreement, each of even date herewith
         and by and among the Borrower, Hydra-Mac, MBS, the Lender and Norwest
         Bank Minnesota, National Association.

                  "Security Interest" has the meaning given in Section 3.1.

                  "Termination Date" means the Maturity Date or the date the
         Lender demands payment pursuant to Section 2.4 or Section 7.2, or the
         Borrower terminates the Credit Facility pursuant to Section 2.5, as the
         case may be.

                  "UCC" means the Uniform Commercial Code as in effect from time
         to time in the State of Minnesota.

                                   ARTICLE II

                     Amount and Terms of the Credit Facility

                  Section 2.1 Revolving Advances. The Lender may, in its sole
discretion, make advances to the Borrower from time to time from the date this
Agreement is signed and delivered to the Termination Date, on the terms and
subject to the conditions herein set forth (each a "D&E Revolving Advance"). The
Lender shall not consider any request for a D&E Revolving Advance if, after
giving effect to such requested D&E Revolving Advance, (i) the sum of the
outstanding and unpaid D&E Revolving Advances, plus the outstanding and unpaid
Hydra-Mac Revolving Advances, plus the outstanding and unpaid MBS Revolving
Advances would exceed the Overall Borrowing Base or (ii) the sum of the
outstanding and unpaid D&E Revolving Advances would exceed the D&E Borrowing
Base. The Borrower's obligation to pay the D&E Revolving Advances shall be
evidenced by the D&E Revolving Note and shall be secured by the Collateral.
Within the limits set forth in this Section 2.1, the Borrower may request D&E
Revolving Advances, prepay, and request additional D&E Revolving Advances. The
Borrower shall make each request for a D&E Revolving Advance to the Lender
before 11:00 a.m. (Minneapolis time) of the day of the requested D&E Revolving
Advance. Requests may be made in writing or by telephone.

                  Section 2.2 Interest; Default Interest. All interest shall be
payable monthly in arrears on the first day of the month and on demand.

                  (a) REVOLVING NOTE. Except as set forth in subsection (c) and
         (d), the outstanding principal balance of the D&E Revolving Advances
         shall bear interest at the Floating Rate.

                  (b) MINIMUM INTEREST CHARGE. Notwithstanding the interest
         payable pursuant to subsections (a) and (c), the Borrower, Hydra-Mac
         and MBS, collectively, shall pay to the Lender interest on the
         Hydra-Mac Revolving Advances, the D&E Revolving Advances and the MBS
         Revolving Advances, collectively, of not less than $37,500 per calendar
         year during the term of this Agreement (prorated for less than full
         years), and the Borrower, D&E and MBS, in a manner within the sole
         discretion of the Borrower, D&E and MBS, shall pay any deficiency
         between such

<PAGE>


         minimum interest charge and the amount of interest otherwise calculated
         under Sections (a) and (c) in arrears on the first day of each year.

                  (c) DEFAULT INTEREST RATE. At any time during any Default
         Period, in the Lender's sole discretion and without waiving any of its
         other rights and remedies, the principal of the D&E Revolving Advances
         outstanding from time to time shall bear interest at the Default Rate,
         effective for any periods designated by the Lender from time to time
         during that Default Period.

                  (d) USURY. In any event no rate change shall be put into
         effect which would result in a rate greater than the highest rate
         permitted by law.

                  Section 2.3 Administration Fees. The Borrower hereby agrees to
pay the Lender, on demand, audit fees in connection with any audits or
inspections conducted by the Lender of any Collateral or the Borrower's
operations or business at the rates established from time to time by the Lender
as its audit fees (which fees are currently $62.50 per hour per auditor),
together with all actual out-of-pocket costs and expenses incurred in conducting
any such audit or inspection.

                  Section 2.4 Discretionary Nature of Credit Facility; Automatic
Renewal. THE LENDER MAY AT ANY TIME AND FOR ANY REASON REFUSE TO MAKE A D&E
REVOLVING ADVANCE AND/OR DEMAND PAYMENT OF THE D&E REVOLVING ADVANCES AND
TERMINATE THIS AGREEMENT WHETHER BORROWER IS OR IS NOT IN COMPLIANCE WITH THIS
AGREEMENT. The Lender need not show that an adverse change has occurred in the
Borrower's condition, financial or otherwise, in order to refuse to make any
requested Advance or to demand payment of the D&E Revolving Advances. Unless
terminated by the Lender at any time or by the Borrower pursuant to Section 2.5,
this Agreement shall remain in effect until the Original Maturity Date and,
thereafter, shall automatically renew for successive one year periods. Each such
anniversary date is herein referred to as a "Maturity Date".

                  Section 2.5 Termination by Borrower.

         (a) TERMINATION BY BORROWER. The Borrower may terminate this Agreement
at any time and, subject to payment and performance of all Obligations, may
obtain any release or termination of the Security Interest to which the Borrower
is otherwise entitled by law by (i) giving at least 30 days' prior written
notice to the Lender of the Borrower's intention to terminate this Agreement,
and (ii) paying the Lender a prepayment fee in accordance with subsection (b)
if the Borrower terminates this Agreement effective as of any date other than a
Maturity Date; provided, however, if the Borrower elects to terminate this
Agreement, the Borrower must also terminate the Hydra-Mac Credit Agreement, in
accordance with Section 2.6(a) of such agreement, and the MBS Credit Agreement,
in accordance with Section 2.5(a) of such agreement.

         (b) PREPAYMENT FEE. If the Borrower desires to terminate this Agreement
as of any date other than a Maturity Date, or as of a Maturity Date but without
giving at least 90 days' prior written notice thereof, it shall (i) give at
least 30 days' prior written notice to the Lender of the Borrower's intention to
do so, and (ii) pay to the Lender a prepayment fee of 3% of the D&E Maximum
Line; provided, however, that such prepayment fee shall be waived if such
prepayment is made because of increased cash flow generated from the Borrower's
operations, in the normal course of business, or refinancing by an affiliate of
the Lender.

                  Section 2.6 Mandatory Prepayment. Without notice or demand,
if the outstanding principal balance of the D&E Revolving Advances shall at any
time exceed the D&E Borrowing Base or if the outstanding principal balance of
the Advances shall at any time exceed the Overall Borrowing Base, the Borrower
shall immediately prepay the D&E Revolving Advances to the extent necessary to
eliminate such excess.

                  Section 2.7 D&E Revolving Advances Without Request. The
Borrower hereby authorizes the Lender, in its discretion, at any time or from
time to time without the Borrower's request, to make D&E Revolving Advances to
pay accrued interest, fees, uncollected items that have been applied to the
Obligations, and other Obligations due and payable from time to time.

                                  ARTICLE III

                                Security Interest

                  Section 3.1 Grant of Security Interest. The Borrower hereby
grants to the Lender a security interest (the "Security Interest") in the
following collateral (the "Collateral"), as security for the payment and
performance of the Obligations:

<PAGE>


         INVENTORY: All inventory of Borrower, as such term is defined in the
         UCC, whether now owned or hereafter acquired, whether consisting of
         whole goods, spare parts or components, supplies or materials, whether
         acquired, held or furnished for sale, for lease or under service
         contracts or for manufacture or processing, and wherever located;

         ACCOUNTS AND OTHER RIGHTS TO PAYMENT: Each and every right of Borrower
         to the payment of money, whether such right to payment now exists or
         hereafter arises, whether such right to payment arises out of a sale,
         lease or other disposition of goods or other property, out of a
         rendering of services, out of a loan, out of the overpayment of taxes
         or other liabilities, or otherwise arises under any contract or
         agreement, whether such right to payment is created, generated or
         earned by Borrower or by some other Person who subsequently transfers
         such Person's interest to Borrower, whether such right to payment is or
         is not already earned by performance, and howsoever such right to
         payment may be evidenced, together with all other rights and interests
         (including all liens and security interests) which Borrower may at any
         time have by law or agreement against any account debtor or other
         obligor obligated to make any such payment or against any property of
         such account debtor or other obligor; all including all of Borrower's
         rights to payment in the form of all present and future accounts,
         contract rights, loans and obligations receivable, chattel papers,
         bonds, notes and other debt instruments, tax refunds and rights to
         payment in the nature of general intangibles;

         EQUIPMENT: All of the Borrower's equipment, as such term is defined in
         the UCC whether now or hereafter owned, including all present and
         future machinery, vehicles, furniture, fixtures, manufacturing
         equipment, shop equipment, office and recordkeeping equipment, parts,
         tools, supplies, and including specifically the goods described in any
         equipment schedule or list herewith or hereafter furnished to the
         Secured Party by Borrower;

         GENERAL INTANGIBLES: All of Borrower's general intangibles, as such
         term is defined in the UCC, whether now owned or hereafter acquired,
         including all present and future contract rights, patents, patent
         applications, copyrights, trademarks, trade names, trade secrets,
         customer or supplier lists and contracts, manuals, operating
         instructions, permits, franchises, the right to use Borrower's name,
         and the goodwill of Borrower's business; and

         INVESTMENT PROPERTY: All of Borrower's investment property, as such
         term is defined in the UCC, whether now owned or hereafter acquired,
         including but not limited to all securities, security entitlements,
         securities accounts, commodity contracts, commodity accounts, stocks,
         bonds, mutual fund shares, money market shares and U.S. Government
         securities; together with all substitutions and replacements for and
         products of any of the foregoing property and together with proceeds of
         any and all of the foregoing property and, in the case of all tangible
         property, together with all accessions and together with (i) all
         accessories, attachments, parts, equipment and repairs now or hereafter
         attached or affixed to or used in connection with any such goods, and
         (ii) all warehouse receipts, bills of lading and other documents of
         title now or hereafter covering such goods.

                  Section 3.2 Notification of Account Debtors and Other
Obligors. The Lender may at any time (either before or after the occurrence of
an Event of Default) notify any account debtor or other Person obligated to pay
the amount due that such right to payment has been assigned or transferred to
the Lender for security and shall be paid directly to the Lender. The Borrower
will join in giving such notice if the Lender so requests. At any time after the
Borrower or the Lender gives such notice to an account debtor or other obligor,
the Lender may, but need not, as the Borrower's agent and attorney-in-fact,
notify the United States Postal Service to change the address for delivery of
the Borrower's mail to any address designated by the Lender, otherwise intercept
the Borrower's mail, and receive, open and dispose of the Borrower's mail,
applying all Collateral as permitted under this Agreement and holding all other
mail for the Borrower's account or forwarding such mail to the Borrower's last
known address.

                  Section 3.3 Occupancy.

                  (a) The Borrower hereby irrevocably grants to the Lender the
         right to take possession of each premises where Borrower conducts its
         business and has any rights of possession (the "Premises") at any time
         during any Default Period.

                  (b) The Lender may use the Premises only to hold, process,
         manufacture, sell, use, store, liquidate, realize upon or otherwise
         dispose of goods that are Collateral and for other purposes that the
         Lender in good faith considers related.

                  (c) The Lender's right to hold the Premises shall terminate
         upon the earlier of payment in full of all Obligations, or final sale
         or disposition of all goods constituting Collateral and delivery of all
         such goods to purchasers.

<PAGE>


                  (d) The Lender shall not be obligated to pay or account for
         any rent or other compensation for the possession or use of any of the
         Premises; provided, however, that if the Lender does pay or account for
         any rent or other compensation for the possession or use of any of the
         Premises, the Borrower shall reimburse the Lender promptly for the full
         amount thereof.

                  Section 3.4 Filing a Copy. A carbon, photographic, or other
reproduction of this Agreement or of a financing statement signed by Borrower is
sufficient as a financing statement.

                                   ARTICLE IV

                              Conditions of Lending

                  Section 4.1 Conditions Precedent to the Lender's Willingness
to Consider Making D&E Revolving Advances. The Lender's willingness to consider
making an initial D&E Revolving Advance hereunder shall be subject to the
condition precedent that the Lender shall have received all of the following,
each in form and substance satisfactory to the Lender:

                  (a) This Agreement, properly executed by the Borrower.

                  (b) The Hydra-Mac Credit Agreement, properly executed by
         Hydra-Mac.

                  (c) The MBS Credit Agreement, properly executed by MBS.

                  (d) The Note, properly executed by the Borrower.

                  (e) A true and correct copy of any and all leases pursuant to
         which the Borrower is leasing the Premises, together with a landlord's
         disclaimer and consent with respect to each such lease.

                  (f) The Collateral Account Agreement, properly executed by the
         Borrower, Hydra-Mac, MBS and Norwest Bank Minnesota, National
         Association.

                  (g) The Lockbox Agreement, properly executed by the Borrower,
         Hydra-Mac, MBS and Norwest Bank Minnesota, National Association.

                  (h) Current searches of appropriate filing offices showing
         that (i) no state or federal tax liens have been filed and remain in
         effect against the Borrower, (ii) no financing statements or
         assignments of patents, trademarks or copyrights have been filed and
         remain in effect against the Borrower except those financing statements
         and assignments of patents, trademarks or copyrights relating to
         Permitted Liens or to liens held by Persons who have agreed in writing
         that upon receipt of proceeds of the Advances, they will deliver UCC
         releases and/or terminations and releases of such assignments of
         patents, trademarks or copyrights satisfactory to the Lender, and (iii)
         the Lender has duly filed all financing statements necessary to perfect
         the Security Interest, to the extent the Security Interest is capable
         of being perfected by filing.

                  (i) A certificate of the Borrower's Secretary certifying as to
         (i) the resolutions of the Borrower's directors, and if required, its
         shareholders, authorizing the execution, delivery and performance of
         the Loan Documents, (ii) the Borrower's articles of incorporation and
         bylaws, and (iii) the signatures of the Borrower's agents authorized to
         execute and deliver the Loan Documents and other instruments,
         agreements and certificates, including Advance requests, on the
         Borrower's behalf.

                  (j) A current certificate issued by the Secretary of State of
         North Dakota, certifying that the Borrower is in compliance with all
         applicable organizational requirements of the State of North Dakota.

                  (k) Evidence that the Borrower is duly licensed or qualified
         to transact business in all jurisdictions where the character of the
         property owned or leased or the nature of the business transacted by it
         makes such licensing or qualification necessary.

                  (l) A support agreement in favor of the Lender, properly
         executed by David M. Eichers, in his personal capacity.

                  (m) An opinion of counsel to the Borrower and the Guarantors,
         addressed to the Lender.

<PAGE>


                  (n) Certificates of the insurance required hereunder, with all
         hazard insurance containing a lender's loss payable endorsement in the
         Lender's favor and with all liability insurance naming the Lender as an
         additional insured.

                  (o) A separate guaranty, properly executed by each Guarantor,
         pursuant to which each Guarantor unconditionally guarantees the full
         and prompt payment of all Obligations.

                  (p) The MRI Security Agreement, properly executed by MRI.

                  (q) Payment of the fees and commissions due through the date
         of the initial D&E Revolving Advance and expenses incurred by the
         Lender through such date and required to be paid by the Borrower under
         Section 8.3, including all legal expenses incurred through the date of
         this Agreement.

                  (r) Such other documents as the Lender in its sole discretion
         may require.

                  Section 4.2 Conditions Precedent to All D&E Revolving
Advances. The Lender will not consider any request for a D&E Revolving Advance
unless on such date:

                  (a) the representations and warranties contained in Article V
         and the Disclosure are correct on and as of the date of such D&E
         Revolving Advance as though made on and as of such date, except to the
         extent that such representations and warranties relate solely to an
         earlier date; and

                  (b) no event has occurred and is continuing, or would result
         from such D&E Revolving Advance which constitutes a Default or an Event
         of Default.

                                   ARTICLE V

                         Representations and Warranties

                  THE BORROWER REPRESENTS AND WARRANTS TO THE LENDER AS FOLLOWS:

                  Section 5.1 Name; Locations; Tax ID No.; Subsidiaries. During
its existence, the Borrower has done business solely under its corporate name as
set forth herein and under such trade names and such other corporate names as
disclosed to Lender in writing before this Agreement is signed and delivered.
The address of Borrower's chief executive office and principal place of business
and its federal tax identification number are set forth below its signature to
this Agreement. All Inventory is located at that location or at one of the other
locations disclosed to Lender in writing before this Agreement is signed and
delivered. The Borrower has no subsidiaries except as disclosed to Lender in
writing before this Agreement is signed and delivered.

                  Section 5.2 Financial Condition; No Adverse Change. Before
this Agreement was signed and delivered, the Borrower furnished the Lender
certain of its unaudited financial statements certified by the Borrower. Those
statements fairly present the Borrower's financial condition as of the dates
indicated therein and the results of its operations for the periods then ended
and were prepared in accordance with generally accepted accounting principles.
Since the date of the most recent financial statements, there has been no
material adverse change in the business, properties or condition (financial or
otherwise) of the Borrower.

                                   ARTICLE VI

                            Covenants of the Borrower

                  SO LONG AS THE D&E REVOLVING ADVANCES OR ANY AMOUNT OWING TO
LENDER HEREUNDER SHALL REMAIN UNPAID, THE BORROWER WILL COMPLY WITH THE
REQUIREMENTS IN THIS ARTICLE, UNLESS THE LENDER SHALL OTHERWISE CONSENT IN
WRITING.

                  Section 6.1 Reporting Requirements. The Borrower will deliver
to the Lender each of the following in form and detail acceptable to the Lender:

                  (a) as soon as available, and in any event within 90 days
         after the end of each fiscal year of the Borrower, the Borrower's
         audited financial statements prepared in accordance with GAAP; together
         with (i) copies of all management letters prepared by such accountants;
         (ii) a report signed by such accountants stating that in making the
         investigations necessary for said opinion they obtained no knowledge,
         except as specifically stated, of any Default or Event of Default
         hereunder and all relevant facts in reasonable detail to evidence, and
         the computations as to, whether

<PAGE>


         or not the Borrower is in compliance with the requirements set forth in
         Section 6.7 and (iii) a certificate of the Borrower's chief financial
         officer stating that such financial statements have been prepared in
         accordance with GAAP, that they fairly present the Borrower's financial
         condition and the results of its operations, and whether or not such
         officer has knowledge of the occurrence of any Default or Event of
         Default hereunder and, if so, stating in reasonable detail the facts
         with respect thereto;

                  (b) as soon as available and in any event within 20 days after
         the end of each month, an unaudited/internal balance sheet and
         statement of income and retained earnings of the Borrower as at the end
         of and for such month and for the year to date period then ended,
         prepared in accordance with GAAP, subject to year-end audit
         adjustments; and accompanied by a certificate of the Borrower's chief
         financial officer, substantially in the form of Exhibit B hereto
         stating (i) that such financial statements have been prepared in
         accordance with GAAP, subject to year-end audit adjustments and fairly
         represent the Borrower's financial condition and the results of its
         operations, (ii) whether or not such officer has knowledge of the
         occurrence of any Default or Event of Default hereunder not theretofore
         reported and remedied and, if so, stating in reasonable detail the
         facts with respect thereto, and (iii) all relevant facts in reasonable
         detail to evidence, and the computations as to, whether or not the
         Borrower is in compliance with the requirements set forth in Section
         6.7;

                  (c) within 15 days after the end of each month, agings of the
         Borrower's accounts receivable and accounts payable and an accounts
         receivable certification as of the end of such month;

                  (d) as soon as available and in any event within 20 days of
         the end of each month, inventory certifications as of the end of such
         month;

                  (e) as soon as available, a copy of the checking account
         statement of the Borrower, including all deposit tickets, as of the
         last day of each month from each bank with which Borrower maintains a
         checking account, such statements to be provided to the Lender directly
         by each such bank or by the Borrower with respect to a bank that is
         unwilling to send them to the Lender;

                  (f) at least 30 days before the beginning of each fiscal year
         of the Borrower, the projected balance sheets, income statements and
         statements of cash flow for each month of such year, each in reasonable
         detail, representing the Borrower's good faith projections and
         certified by the Borrower's chief financial officer as being the most
         accurate projections available and identical to the projections used by
         the Borrower for internal planning purposes, together with such
         supporting schedules and information as the Lender may in its
         discretion require; provided, however, that with respect to the
         Borrower's projections for fiscal year 1998, such projections shall be
         delivered to the Lender on or before December 31, 1997;

                  (g) as soon as available and in any event within 3 days after
         they are due, copies of tax payments due and paid and written notice of
         any and all taxes due but not paid;

                  (h) from time to time, with reasonable promptness, any and all
         receivables schedules, collection reports, deposit records, equipment
         schedules, copies of invoices to account debtors, shipment documents
         and delivery receipts for goods sold, and such other material, reports,
         records or information as the Lender may request; and

                  (i) before March 31 of each calendar year, the Borrower shall
         cause any and all Guarantors, along with John F. Luoma and David
         Eichers, to submit financial statements to the Lender, and certified by
         such party.

                  Section 6.2 Inspection. Upon the Lender's request, the
Borrower will permit any officer, employee, attorney, agent or accountant for
the Lender to audit, review, make extracts from or copy any and all records of
the Borrower and to inspect the Collateral at all times during ordinary business
hours.

                  Section 6.3 Account Verification. The Lender may at any time
and from time to time send, or request the Borrower to send, requests for
verification of Accounts or notices of assignment to account debtors and other
obligors. The Borrower authorizes the Lender to verify Accounts as frequently as
daily and the Borrower understands the Lender intends to do so by telephone
and/or in writing.

                  Section 6.4 No Other Liens. The Borrower will keep all
Collateral free and clear of all security interests, liens and encumbrances
except the Security Interest, purchase money security interests in equipment,
and other security interests approved by the Lender in writing.

<PAGE>


                  Section 6.5 Insurance. The Borrower will at all times keep all
tangible Collateral insured against risks of fire (including so-called extended
coverage), theft, collision (for Collateral consisting of motor vehicles) and
such other risks and in such amounts as the Lender may reasonably request, with
a lender's loss payable clause in favor of Lender to the extent of its interest.

                  Section 6.6 Lockbox; Collateral Account. The Borrower has
provided the Lender with agreements regarding a lockbox and a collateral account
in connection with the collection of Accounts.

                  Section 6.7 Minimum Book Net Worth. The Borrower will cause
MRI to maintain, during each period described below, its consolidated Book Net
Worth, determined as at the end of each month, at an amount not less than the
amount set forth opposite such period:

            -------------------------  -----------------------------
                     Period                Minimum Book Net Worth
            -------------------------  -----------------------------
                  July 31, 1997                  $1,800,000
            through October 30, 1997
            -------------------------  -----------------------------
                October 31, 1997                $1,850,000
            through January 30, 1998
            -------------------------  -----------------------------
                 January 31, 1998               $1,900,000
             through April 29, 1998
            -------------------------  -----------------------------
                 April 30, 1998                 $1,950,000
             through July 30, 1998
            -------------------------  -----------------------------
               July 31, 1998 and                $2,030,000
                  thereafter
            -------------------------  -----------------------------

                  Section 6.8 Minimum Net Income. The Borrower shall achieve
Minimum Net Income, beginning in January of 1998, in accordance with covenant
amounts established by the Lender, in its sole discretion, based upon the
Borrower's projections to be delivered in accordance with Section 6.1(f) herein.

                  Section 6.9 No Sale or Transfer of Collateral and Other
Assets. The Borrower will not sell, lease, assign, transfer or otherwise dispose
of (i) the stock of any subsidiary, (ii) all or a substantial part of its
assets, or (iii) any Collateral or any interest therein (whether in one
transaction or in a series of transactions) to anyone other than the sale of
Inventory in the ordinary course of business.

                  Section 6.10 No Sale or Transfer of Shares of Borrower.
Borrower will cause each of its shareholders not to sell, transfer, pledge, or
grant a security interest in, any shares of stock of the Borrower.

                  Section 6.11 Place of Business; Name. The Borrower will not
change the location of its chief executive office or principal place of business
from that disclosed pursuant to Section 5.1. The Borrower will not permit any
tangible Collateral to be located in any state or area in which, in the event of
such location, a financing statement covering such Collateral would be required
to be, but has not in fact been, filed in order to perfect the Security
Interest. The Borrower will not change its name.

                  Section 6.12 Investments. The Borrower will not purchase or
hold beneficially any stock or other securities or evidences of indebtedness of,
make or permit to exist any loans or advances to, or make any investments or
acquire any interest whatsoever in, any other Person, including specifically but
without limitation any partnership, joint venture, or Affiliate, except:

                  (i) TRAVEL ADVANCES OR LOANS TO THE BORROWER'S OFFICERS AND
                  EMPLOYEES NOT EXCEEDING AT ANY ONE TIME AN AGGREGATE OF
                  $10,000; AND

                  (ii) ADVANCES IN THE FORM OF PROGRESS PAYMENTS, PREPAID RENT
                  NOT EXCEEDING TWO (2) MONTHS OR SECURITY DEPOSITS.

                                  ARTICLE VII

                     Events of Default, Rights and Remedies

                  Section 7.1 Events of Default. An "Event of Default" as used
herein shall mean any of the following:

                  (a) Failure to pay the Note when demanded, and in this
         connection Borrower hereby waives presentment, notice of dishonor and
         protest;

<PAGE>


                  (b) A petition shall be filed by or against the Borrower or
         any Guarantor under the United States Bankruptcy Code naming the
         Borrower or such Guarantor as debtor;

                  (c) Default in the performance, or breach, of any covenant or
         agreement of the Borrower contained in any Loan Document;

                  (d) An event of default under and as defined in the Hydra-Mac
         Credit Agreement shall occur and be continuing, or any other breach,
         default or event of default by or attributable to any Affiliate under
         any agreement between such Affiliate and the Lender;

                  (e) An event of default under and as defined in the MBS Credit
         Agreement shall occur and be continuing, or any other breach, default
         or event of default by or attributable to any Affiliate under any
         agreement between such Affiliate and the Lender.

                  Section 7.2 Rights and Remedies. As provided in Section 2.4,
the Lender may, at any time and for any reason, refuse to make any requested D&E
Revolving Advance or demand payment of the Obligations. In addition, upon the
occurrence of an Event of Default or at any time thereafter, the Lender may
exercise any or all of the following rights and remedies:

                  (a) The Lender may exercise and enforce any and all rights and
         remedies available upon default to a secured party under the UCC,
         including the right to take possession of Collateral, or any evidence
         thereof, proceeding without judicial process or by judicial process
         (without a prior hearing or notice thereof, which the Borrower hereby
         expressly waives) and the right to sell, lease or otherwise dispose of
         any or all of the Collateral, and in connection therewith, the Borrower
         will on demand assemble the Collateral and make it available to the
         Lender at a place to be designated by the Lender which is reasonably
         convenient to both parties;

                  (b) The Lender may exercise any other rights and remedies
         available to it by law or agreement.

THE REMEDIES PROVIDED HEREUNDER ARE CUMULATIVE.

                  Section 7.3 Certain Notices. If notice to the Borrower of any
intended disposition of Collateral or any other intended action is required by
law in a particular instance, such notice shall be deemed commercially
reasonable if given (in the manner specified in Section 8.2) at least 10
calendar days before the date of intended disposition or other action.

                                  ARTICLE VIII

                                  Miscellaneous

                  Section 8.1 Release. The Borrower hereby absolutely and
unconditionally releases and forever discharges the Lender and any and all
parent corporations, subsidiary corporations, affiliated corporations, insurers,
indemnitors, successors and assigns thereof, together with all of the present
and former directors, officers, agents and employees of any of the foregoing,
from any and all claims, demands or causes of action of any kind, nature or
description, whether arising in law or equity or upon contract or tort or under
any state or federal law or otherwise, which the Borrower has had, now has or
has made claim to have against any such person for or by reason of any act,
omission, matter, cause or thing whatsoever arising from the beginning of time
to and including the date of this Agreement, whether such claims, demands and
causes of action are matured or unmatured or known or unknown.

                  Section 8.2 Addresses for Notices, Etc. Except as otherwise
expressly provided herein, all notices, requests, demands and other
communications provided for hereunder shall be in writing and shall be (i)
personally delivered, (ii) sent by first class United States mail, (iii) sent by
overnight courier of national reputation, or (iv) transmitted by telecopy, in
each case addressed or telecopied to the party to whom notice is being given at
its address or telecopy number as set forth below its signature to this
Agreement.

                  Section 8.3 Costs and Expenses. The Borrower agrees to pay on
demand all costs and expenses (including legal fees) incurred by the Lender in
connection with the Loan Documents and any other document or agreement related
thereto, and the transactions contemplated hereby, including wire transfer and
ACH charges, the cost of credit reports, overadvance fees, the expense of any
auditors and fees and expenses in enforcing this Agreement.

                  Section 8.4 Indemnity. In addition to the payment of expenses
pursuant to Section 8.3, the Borrower agrees to indemnify, defend and hold
harmless the Lender, and any of its participants, parent corporations,
subsidiary corporations,

<PAGE>


affiliated corporations, successor corporations, and all present and future
officers, directors, employees, attorneys and agents of the foregoing (the
"Indemnitees") from and against any of the following (collectively, "Indemnified
Liabilities"):

                           (i) any and all transfer taxes, documentary taxes,
                  assessments or charges made by any governmental authority by
                  reason of the execution and delivery of this Agreement and the
                  other Loan Documents or the making of the D&E Revolving
                  Advances;

                           (ii) any and all liabilities, losses, damages,
                  penalties, judgments, suits, claims, costs and expenses of any
                  kind or nature whatsoever (including, without limitation, the
                  reasonable fees and disbursements of counsel) in connection
                  with any investigative, administrative or judicial
                  proceedings, whether or not such Indemnitee shall be
                  designated a party thereto, which may be imposed on, incurred
                  by or asserted against any such Indemnitee, in any manner
                  related to or arising out of or in connection with the making
                  of the D&E Revolving Advances, this Agreement and the other
                  Loan Documents or the use or intended use of the proceeds of
                  the D&E Revolving Advances; and

                           (iii) any claim, loss or damage to which any
                  Indemnitee may be subjected as a result of any violation of
                  any federal, state, local or other governmental statute,
                  regulation, law, or ordinance dealing with the protection of
                  human health and the environment.

IF ANY INVESTIGATIVE, JUDICIAL OR ADMINISTRATIVE PROCEEDING ARISING FROM ANY OF
THE FOREGOING IS BROUGHT AGAINST ANY INDEMNITEE, THEN THE BORROWER OR COUNSEL
DESIGNATED BY THE BORROWER AND SATISFACTORY TO THE INDEMNITEE, WILL RESIST AND
DEFEND SUCH ACTION, SUIT OR PROCEEDING TO THE EXTENT AND IN THE MANNER DIRECTED
BY THE INDEMNITEE. EACH INDEMNITEE WILL USE ITS BEST EFFORTS TO COOPERATE IN THE
DEFENSE OF ANY SUCH ACTION, SUIT OR PROCEEDING. IF THE FOREGOING UNDERTAKING TO
INDEMNIFY, DEFEND AND HOLD HARMLESS MAY BE HELD TO BE UNENFORCEABLE BECAUSE IT
VIOLATES ANY LAW OR PUBLIC POLICY, THE BORROWER SHALL NEVERTHELESS MAKE THE
MAXIMUM CONTRIBUTION TO THE PAYMENT AND SATISFACTION OF EACH OF THE INDEMNIFIED
LIABILITIES WHICH IS PERMISSIBLE UNDER APPLICABLE LAW. THE BORROWER'S OBLIGATION
UNDER THIS SECTION 8.4 SHALL SURVIVE THE TERMINATION OF THIS AGREEMENT AND THE
DISCHARGE OF THE BORROWER'S OTHER OBLIGATIONS HEREUNDER.

                  Section 8.5 Binding Effect; Assignment; Counterparts;
Exchanging Information. The Loan Documents shall be binding upon and inure to
the benefit of the Borrower and the Lender and their respective successors and
assigns, except that the Borrower shall not have the right to assign its rights
thereunder or any interest therein without the prior written consent of the
Lender. This Agreement and other Loan Documents may be executed in any number of
counterparts, each of which when so executed and delivered shall be deemed to be
an original and all of which counterparts, taken together, shall constitute but
one and the same instrument. Without limiting the Lender's right to share
information regarding the Borrower and its Affiliates with the Lender's
participants, accountants, lawyers and other advisors, the Lender, Norwest
Corporation, and all direct and indirect subsidiaries of Norwest Corporation,
may exchange any and all information they may have in their possession regarding
the Borrower and its Affiliates, and the Borrower waives any right of
confidentiality it may have with respect to such exchange of such information.


                            [SIGNATURE PAGE FOLLOWS]

<PAGE>


                  Section 8.6 Governing Law; Jurisdiction, Venue; Waiver of
Jury Trial. This Agreement and the Note shall be governed by and construed in
accordance with the laws (other than conflict laws) of the State of Minnesota.
Each party consents to the personal jurisdiction of the state and federal courts
located in the State of Minnesota in connection with any controversy related to
this Agreement, waives any argument that venue in any such forum is not
convenient and agrees that any litigation initiated by any of them in connection
with this Agreement shall be venued in either the District Court of Hennepin
County, Minnesota located in Minneapolis, Minnesota, or the United States
District Court, District of Minnesota, Fourth Division. THE PARTIES WAIVE ANY
RIGHT TO TRIAL BY JURY IN ANY ACTION OR PROCEEDING BASED ON OR PERTAINING TO
THIS AGREEMENT.

                  IN WITNESS WHEREOF, the parties hereto have signed this
Agreement as of the date first above written.

NORWEST CREDIT, INC.                          D&E MACHINING, INC.

By 
   -------------------------------
     Roger A. Pfiffner                        By 
     Its Vice President                          -------------------------------
                                                   John F. Luoma
                                                   Its President
Address:
Norwest Center
Sixth Street and Marquette Avenue             Address:
Minneapolis, Minnesota 55479-0152             1750 Yankee Doodle Road
Telecopy No. (612) 341-2472                   Suite 202
Federal Tax ID No. 41-1712687                 Eagan, Minnesota 55121
                                              Telecopy No. (612) 405-9312
                                              Federal Tax ID No. 45-0308466

                [SIGNATURE PAGE TO CREDIT AND SECURITY AGREEMENT]

<PAGE>


                                      Exhibit A to Credit and Security Agreement

                                 REVOLVING NOTE

$200,000                                                  Minneapolis, Minnesota
                                                               November 25, 1997

                  For value received, the undersigned, D&E MACHINING, INC., a
North Dakota corporation (the "Borrower"), hereby promises to pay ON DEMAND to
the order of NORWEST CREDIT, INC., a Minnesota corporation (the "Lender"), at
its main office in Minneapolis, Minnesota, or at any other place designated at
any time by the holder hereof, in lawful money of the United States of America
and in immediately available funds, the principal sum of Two Hundred Thousand
Dollars ($200,000) or, if less, the aggregate unpaid principal amount of all D&E
Revolving Advances made by the Lender to the Borrower under the Credit and
Security Agreement of even date herewith by and between the Lender and the
Borrower (as the same may hereafter be amended, supplemented or restated from
time to time, the "Credit Agreement") together with interest on the principal
amount hereunder remaining unpaid from time to time (computed on the basis of
actual days elapsed in a 360-day year) from the date of the initial D&E
Revolving Advance until this Note is fully paid at the rate from time to time in
effect under the Credit Agreement.

                  This Note is the D&E Revolving Note as defined in the Credit
Agreement and is subject to the Credit Agreement.

                                       D&E MACHINING, INC.

                                       By 
                                          ---------------------------------
                                            John F. Luoma
                                            Its President

<PAGE>


                                      Exhibit B to Credit and Security Agreement

                             COMPLIANCE CERTIFICATE

To:               Roger A. Pfiffner
                  Norwest Credit, Inc.
Date:                      __________________, 199___
Subject:          D&E Machining, Inc.
                           Financial Statements of Parent

                  In accordance with our Credit and Security Agreement dated as
of November __, 1997 (the "Credit Agreement"), attached are the consolidated
financial statements of Magnum Resources, Inc. (the "Parent") as of and for
______________, 19___ (the "Reporting Date") and the year-to-date period then
ended (the "Current Financials"). All terms used in this certificate have the
meanings given in the Credit Agreement.

                  I certify that the Current Financials have been prepared in
accordance with GAAP, subject to year-end audit adjustments, and fairly present
the Parent's financial condition as of the date thereof.

                  Events of Default. (Check one):

                  |_| The undersigned does not have knowledge of the occurrence
                  of a Default or Event of Default under the Credit Agreement.

                  |_| The undersigned has knowledge of the occurrence of a
                  Default or Event of Default under the Credit Agreement and
                  attached hereto is a statement of the facts with respect to
                  thereto. Financial Covenants. I further hereby certify as
                  follows:

                  1. Minimum Book Net Worth. Pursuant to Section 6.7 of the
         Credit Agreement, as of the Reporting Date, the Parent's Book Net Worth
         was $____________ which |_| satisfies |_| does not satisfy the
         requirement that such amount be not less than $_____________ on the
         Reporting Date as set forth in table below:

          -----------------------------  --------------------------
                     Period                Minimum Book Net Worth
          -----------------------------  --------------------------
          July 31, 1997 through October         $1,800,000
                   30, 1997
          -----------------------------  --------------------------
            October 31, 1997 through            $1,850,000
                January 30, 1998
          -----------------------------  --------------------------
          January 31, 1998 through April        $1,900,000
                    29, 1998
          -----------------------------  --------------------------
          April 30, 1998 through July 30,       $1,950,000
                      1998
          -----------------------------  --------------------------
          July 31, 1998 and thereafter          $2,030,000
          
          -----------------------------  --------------------------

                  Attached hereto are all relevant facts in reasonable detail to
evidence, and the computations of the financial covenants referred to above.
These computations were made in accordance with GAAP.

                                         D&E MACHINING, INC.


                                         By 
                                            ----------------------------
                                              Dave Eichers
                                              Its Secretary

<PAGE>


               AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT
                          Dated as of November 25, 1997

                  HYDRA-MAC INTERNATIONAL, INC., a Delaware corporation (the
"Borrower"), and NORWEST CREDIT, INC., a Minnesota corporation (the "Lender"),
hereby agree as follows:

                                    ARTICLE I

                                   Definitions

                  Section 1.1 Definitions. For all purposes of this Agreement,
except as otherwise expressly provided or unless the context otherwise requires:

                  "Accounts" means the aggregate unpaid obligations of customers
         and other account debtors to the Borrower arising out of the sale or
         lease of goods or rendition of services by the Borrower on an open
         account or deferred payment basis, whether now existing or hereafter
         arising.

                  "Advance" means a Hydra-Mac Revolving Advance, a D&E Revolving
         Advance and a MBS Revolving Advance.

                  "Affiliate" or "Affiliates" means D&E, MBS, MRI, Power
         Equipment and any other Person controlled by, controlling or under
         common control with the Borrower, including (without limitation) any
         Subsidiary of the Borrower. For purposes of this definition, "control,"
         when used with respect to any specified Person, means the power to
         direct the management and policies of such Person, directly or
         indirectly, whether through the ownership of voting securities, by
         contract or otherwise.

                  "Agreement" means this Credit and Security Agreement, as
         amended, supplemented and restated from time to time.

                  "Base Rate" means the rate of interest publicly announced from
         time to time by Norwest Bank Minnesota, National Association as its
         "base rate" or, if such bank ceases to announce a rate so designated,
         any similar successor rate designated by the Lender.

                  "Book Net Worth" means the aggregate of the common
         stockholders' equity of the Borrower, determined in accordance with
         GAAP.

                  "Collateral" has the meaning given in Section 3.1.

                  "Collateral Account Agreement" means the Amended and Restated
         Collateral Account Agreement of even date herewith by and among the
         Borrower,

                  D&E, MBS, Norwest Bank Minnesota, National Association, and
         the Lender.

                  "D&E" means D&E Machining, Inc., a North Dakota corporation.

                  "D&E Borrowing Base" has the meaning given in the D&E Credit
         Agreement.

                  "D&E Credit Agreement" means that certain Credit and Security
         Agreement of even date herewith, by and between D&E and the Lender, as
         amended, supplemented and restated from time to time.

                  "D&E Revolving Advance" has the meaning given in the D&E
         Credit Agreement.

                  "Debt" of any Person means all items of indebtedness or
         liability which in accordance with GAAP would be included in
         determining total liabilities as shown on the liabilities side of a
         balance sheet of that Person as at the date as of which Debt is to be
         determined. For purposes of determining a Person's aggregate Debt at
         any time, "Debt" shall also include the aggregate payments required to
         be made by such Person at any time under any lease that is considered a
         capitalized lease under GAAP.

                  "Default" means an event that, with giving of notice or
         passage of time or both, would constitute an Event of Default.

                  "Default Period" means any period of time beginning on the
         first day of any month during which a Default or Event of Default has
         occurred and ending on the date the Lender notifies the Borrower in
         writing that such Default or Event of Default has been cured or waived.

                  "Default Rate" means an annual rate equal to three and
         one-half percent (3.5%) over the Floating Rate, which rate shall change
         when and as the Floating Rate changes.

                  "Eligible Accounts" means all unpaid Accounts, net of any
         credits, except the following shall not in any event be deemed Eligible
         Accounts:

                           (i) That portion of Accounts over 90 days past
                  invoice date or, if the Lender in its discretion has
                  determined that a particular dated Account of 120 days or less
                  from invoice date may be eligible, that portion of such
                  Account which is more than 30 days past the stated due date;

                           (ii) That portion of Accounts that are disputed or
                  subject to a claim of offset or a contra account;

<PAGE>


                           (iii) That portion of Accounts not yet earned by the
                  final delivery of goods or rendition of services, as
                  applicable, by the Borrower to the customer;

                           (iv) Accounts owed by any unit of government, whether
                  foreign or domestic (provided, however, that there shall be
                  included in Eligible Accounts that portion of Accounts owed by
                  such units of government for which the Borrower has provided
                  evidence satisfactory to the Lender that (A) the Lender has a
                  first priority perfected security interest and (B) such
                  Accounts may be enforced by the Lender directly against such
                  unit of government under all applicable laws);

                           (v) Accounts owed by an account debtor located
                  outside the United States [or Canada] which are not backed by
                  a bank letter of credit assigned to the Lender, in the
                  possession of the Lender and acceptable to the Lender in all
                  respects, in its sole discretion;

                           (vi) Accounts owed by an account debtor that is the
                  subject of bankruptcy proceedings or has gone out of business;

                           (vii) Accounts owed by a shareholder, subsidiary,
                  Affiliate, officer or employee of the Borrower;

                           (viii) Accounts not subject to a duly perfected
                  security interest in favor of the Lender or which are subject
                  to any lien, security interest or claim in favor of any Person
                  other than the Lender;

                           (ix) That portion of Accounts that have been
                  restructured, extended, amended or modified;

                           (x) That portion of Accounts that constitutes finance
                  charges, service charges or sales or excise taxes; and

                           (xi) Accounts, or portions thereof, otherwise deemed
                  ineligible by the Lender in its sole discretion.

                  "ELIGIBLE INVENTORY" MEANS ALL INVENTORY OF THE BORROWER, AT
         THE LOWER OF COST OR MARKET VALUE AS DETERMINED IN ACCORDANCE WITH
         GAAP; PROVIDED, HOWEVER, THAT THE FOLLOWING SHALL NOT IN ANY EVENT BE
         DEEMED ELIGIBLE INVENTORY:

                           (i) Inventory that is: in-transit; located at any
                  warehouse or other premises not approved by the Lender in
                  writing; located outside of the states, or localities, as
                  applicable, in which the Lender has filed financing statements
                  to perfect a first priority security interest in such
                  Inventory; covered by any negotiable or non-negotiable
                  warehouse receipt, bill of lading or other document of title;
                  on consignment from any Person; on consignment to any Person
                  or subject to any bailment unless such consignee or bailee has
                  executed an agreement with the Lender located at job sites;

                           (ii) Supplies, packaging or parts Inventory;

                           (iii) Raw materials Inventory;

                           (iv) Work-in-process Inventory;

                           (v) Inventory that is damaged, slow moving, obsolete
                  or not currently saleable in the normal course of the
                  Borrower's operations;

                           (vi) Inventory that is perishable or live;

                           (vii) Inventory that the Borrower has returned, has
                  attempted to return, is in the process of returning or intends
                  to return to the vendor thereof;

                           (viii) Inventory that is subject to a security
                  interest in favor of any Person other than the Lender;

                           (ix) Sample Inventory;

                           (x) Inventory at a particular location if the value
                  of the same is less than 10% of total Inventory; and

                           (xi) Inventory otherwise deemed ineligible by the
                  Lender in its sole discretion.

                  "Event of Default" has the meaning specified in Section 7.1.

                  "Existing Revolving Advances" has the meaning specified in
         Section 2.1.

                  "Floating Rate" means an annual rate equal to the sum of the
         Base Rate plus four and one-half percent (4.5%), which annual rate
         shall change when and as the Base Rate changes.

                  "GAAP" means generally accepted accounting principles, applied
         on a basis consistent with the accounting practices applied in the
         financial statements described in Section 5.2.

<PAGE>

                  "Guarantors" means D&E, MBS, Power Equipment, MRI and any
         other Person guaranteeing payment of any of the Obligations.

                  "Hydra-Mac Borrowing Base" means the lesser of:
                           (a)      the Maximum Line; or
                           (b)      the sum of:
                                    (i)     80% of Eligible Accounts, plus
                                    (ii)     the lesser of (A) 60% of Eligible
                                             Inventory or (B) $450,000.

                  "Hydra-Mac Revolving Advance" has the meaning given in Section
         2.2.

                  "Hydra-Mac Revolving Note" means the Borrower's revolving
         promissory note, payable to the order of the Lender in substantially
         the form of Exhibit A hereto.

                  "Inventory" means all of the Borrower's inventory, as such
         term is defined in the UCC, whether now owned or hereafter acquired.

                  "Loan Documents" means this Agreement, the Note, the Security
         Documents and the Disclosure by the Borrower in favor of the Lender of
         even date herewith.

                  "Lockbox Agreement" means the Amended and Restated Lockbox
         Agreement by and among the Borrower, D&E, MBS, Norwest Bank Minnesota,
         National Association, and the Lender, of even date herewith.

                  "Maturity Date" has the meaning given in Section 2.5.

                  "Maximum Line" means $1,800,000.

                  "MBS" means Magnum Business Systems, Inc., a [Minnesota]
         corporation.

                  "MBS Borrowing Base" has the meaning given in the MBS Credit
         Agreement.

                  "MBS Credit Agreement" means that certain Credit and Security
         Agreement of even date herewith, by and between MBS and the Lender, as
         amended, supplemented and restated from time to time.

                  "MBS Revolving Advance" has the meaning given in the MBS
         Credit Agreement.

                  "MRI" means Magnum Resources, Inc., a Delaware corporation,
         and the parent of the Borrower, D&E and MBS.

                  "MRI Security Agreement" means the Amended and Restated
         Security Agreement of even date herewith, executed by MRI and delivered
         to the Lender.

                  "Net Income" means fiscal year-to-date after-tax net income,
         decreased by the sum of any extraordinary, non-operating or non-cash
         income recorded by the Borrower and increased by any extraordinary,
         non-cash or non-operating expense or loss recorded by the Borrower, as
         determined in accordance with GAAP.

                  "Note" means the Hydra-Mac Revolving Note.

                  "Obligations" means each and every debt, liability and
         obligation of every type and description which the Borrower may now or
         at any time hereafter owe to the Lender, including all indebtedness
         arising under this Agreement, the Note or any other loan or credit
         agreement or guaranty between the Borrower and the Lender, whether now
         in effect or hereafter entered into.

                  "Old Credit Documents" means that certain Credit and Security
         Agreement dated as of July 10, 1996, as amended by First Amendment to
         Credit and Security Agreement dated as of January 29, 1997 and Second
         Amendment to Credit and Security Agreement dated as of October 21,
         1997.

                  "Old Revolving Note" means the Borrower's revolving promissory
         note dated as of October 29, 1997, payable to the order of the Lender
         in the original principal amount of $1,800,000.

                  "Original Maturity Date" means July 10, 1999.

                  "Overall Borrowing Base" means, at any time and subject to
         change from time to time in the Lender's sole discretion, the lesser
         of:
                           (a) the Maximum Line; or
                           (b) the sum of the Hydra-Mac Borrowing Base, the D&E
                  Borrowing Base, and the MBS Borrowing Base.

                  "Person" means any individual, corporation, partnership, joint
         venture, limited liability company, association, joint-stock company,
         trust, unincorporated organization or government or any agency or
         political subdivision thereof.

                  "Power Equipment" means Power Equipment Corp., a Minnesota
         corporation.

                  "Premises" means all premises where the Borrower conducts its
         business and has any rights of possession.

                  "Security Documents" means this Agreement, the Collateral
         Account Agreement and the Lockbox Agreement, each of even date herewith
         and by and among the Borrower, D&E, MBS, the Lender and Norwest Bank
         Minnesota, National Association.

                  "Security Interest" has the meaning given in Section 3.1.

                  "Termination Date" means the Maturity Date or the date the
         Lender demands payment pursuant to Section 2.5 or Section 7.2, or the
         Borrower terminates the Credit Facility pursuant to Section 2.6, as the
         case may be.

[PAGE]


                  "UCC" means the Uniform Commercial Code as in effect from time
         to time in the State of Minnesota.

                                   ARTICLE II

                     Amount and Terms of the Credit Facility

                  Section 2.1 Existing Advances. The Lender has made various
advances to the Borrower (the "Existing Revolving Advances") as evidenced by the
Old Credit Documents. As of November __, 1997, the outstanding principal balance
of the Existing Revolving Advances was $______________. Upon execution and
delivery of this Agreement, the Existing Revolving Advances shall be deemed to
be Hydra-Mac Revolving Advances made pursuant to Section 2.2 and repayable in
accordance with the Hydra-Mac Revolving Note. To the extent the Hydra-Mac
Revolving Note evidences the Existing Revolving Advances, the Hydra-Mac
Revolving Note shall be issued in substitution for and replacement of but not in
payment of the Old Credit Documents.

                  Section 2.2 Revolving Advances. The Lender may, in its sole
discretion, make advances to the Borrower from time to time from the date this
Agreement is signed and delivered to the Termination Date, on the terms and
subject to the conditions herein set forth (each a "Hydra-Mac Revolving
Advance"). The Lender shall not consider any request for a Hydra-Mac Revolving
Advance if, after giving effect to such requested Hydra-Mac Revolving Advance,
(i) the sum of the outstanding and unpaid Hydra-Mac Revolving Advances, plus the
outstanding and unpaid D&E Revolving Advances, plus the outstanding and unpaid
MBS Revolving Advances would exceed the Overall Borrowing Base or (ii) the sum
of the outstanding and unpaid Hydra-Mac Revolving Advances would exceed the
Hydra-Mac Borrowing Base. The Borrower's obligation to pay the Hydra-Mac
Revolving Advances shall be evidenced by the Hydra-Mac Revolving Note and shall
be secured by the Collateral. Within the limits set forth in this Section 2.2,
the Borrower may request Hydra-Mac Revolving Advances, prepay, and request
additional Hydra-Mac Revolving Advances. The Borrower shall make each request
for a Hydra-Mac Revolving Advance to the Lender before 11:00 a.m. (Minneapolis
time) of the day of the requested Hydra-Mac Revolving Advance. Requests may be
made in writing or by telephone.

                  Section 2.3 Interest; Default Interest. All interest shall be
payable monthly in arrears on the first day of the month and on demand.

                  (a) REVOLVING NOTE. Except as set forth in subsection (c) and
         (d), the outstanding principal balance of the Hydra-Mac Revolving
         Advances shall bear interest at the Floating Rate.

                  (b) MINIMUM INTEREST CHARGE. Notwithstanding the interest
         payable pursuant to subsections (a) and (c), the Borrower, D&E and MBS,
         collectively, shall pay to the Lender interest on the Hydra-Mac
         Revolving Advances, the D&E Revolving Advances and the MBS Revolving
         Advances, collectively, of not less than $37,500 per calendar year
         during the term of this Agreement (prorated for less than full years),
         and the Borrower, D&E and MBS, in a manner within the sole discretion
         of the Borrower, D&E and MBS, shall pay any deficiency between such
         minimum interest charge and the amount of interest otherwise calculated
         under Sections (a) and (c) in arrears on the first day of each year.

                  (c) DEFAULT INTEREST RATE. At any time during any Default
         Period, in the Lender's sole discretion and without waiving any of its
         other rights and remedies, the principal of the Hydra-Mac Revolving
         Advances outstanding from time to time shall bear interest at the
         Default Rate, effective for any periods designated by the Lender from
         time to time during that Default Period.

                  (d) USURY. In any event no rate change shall be put into
         effect which would result in a rate greater than the highest rate
         permitted by law.

                  Section 2.4 Administration Fees. The Borrower hereby agrees
to pay the Lender, on demand, audit fees in connection with any audits or
inspections conducted by the Lender of any Collateral or the Borrower's
operations or business at the rates established from time to time by the Lender
as its audit fees (which fees are currently $62.50 per hour per auditor),
together with all actual out-of-pocket costs and expenses incurred in conducting
any such audit or inspection.

                  Section 2.5 Discretionary Nature of Credit Facility; Automatic
Renewal. THE LENDER MAY AT ANY TIME AND FOR ANY REASON REFUSE TO MAKE A
HYDRA-MAC REVOLVING ADVANCE AND/OR DEMAND PAYMENT OF THE HYDRA-MAC REVOLVING
ADVANCES AND TERMINATE THIS AGREEMENT WHETHER BORROWER IS OR IS NOT IN
COMPLIANCE WITH THIS AGREEMENT. The Lender need not show that an adverse change
has occurred in the Borrower's condition, financial or otherwise, in order to
refuse to make any requested Advance or to demand payment of the Hydra-Mac
Revolving Advances. Unless terminated by the Lender at any time or by the
Borrower

<PAGE>


pursuant to Section 2.6, this Agreement shall remain in effect until the
Original Maturity Date and, thereafter, shall automatically renew for successive
one year periods. Each such anniversary date is herein referred to as a
"Maturity Date".

                  Section 2.6 Termination by Borrower.

                  (a) TERMINATION BY BORROWER. The Borrower may terminate this
         Agreement at any time and, subject to payment and performance of all
         Obligations, may obtain any release or termination of the Security
         Interest to which the Borrower is otherwise entitled by law by (i)
         giving at least 30 days' prior written notice to the Lender of the
         Borrower's intention to terminate this Agreement, and (ii) paying the
         Lender a prepayment fee in accordance with subsection (b) if the
         Borrower terminates this Agreement effective as of any date other than
         a Maturity Date; provided, however, if the Borrower elects to terminate
         this Agreement, the Borrower must also terminate the D&E Credit
         Agreement, in accordance with Section 2.5(a) of such agreement, and the
         MBS Credit Agreement, in accordance with Section 2.5(a) of such
         agreement. 

                  (b) PREPAYMENT FEE. If the Borrower desires to terminate this
         Agreement as of any date other than a Maturity Date, or as of a
         Maturity Date but without giving at least 90 days' prior written notice
         thereof, it shall (i) give at least 30 days' prior written notice to
         the Lender of the Borrower's intention to do so, and (ii) pay to the
         Lender a prepayment fee of 3% of the Maximum Line; provided, however,
         that such prepayment fee shall be waived if such prepayment is made
         because of increased cash flow generated from the Borrower's
         operations, in the normal course of business, or refinancing by an
         affiliate of the Lender.

                  Section 2.7 Mandatory Prepayment. Without notice or demand, if
the outstanding principal balance of the Hydra-Mac Revolving Advances shall at
any time exceed the Hydra-Mac Borrowing Base or if the outstanding principal
balance of the Advances shall at any time exceed the Overall Borrowing Base, the
Borrower shall immediately prepay the Hydra-Mac Revolving Advances to the extent
necessary to eliminate such excess.

                  Section 2.8 Hydra-Mac Revolving Advances Without Request. The
Borrower hereby authorizes the Lender, in its discretion, at any time or from
time to time without the Borrower's request, to make Hydra-Mac Revolving
Advances to pay accrued interest, fees, uncollected items that have been applied
to the Obligations, and other Obligations due and payable from time to time.

                                  ARTICLE III

                                Security Interest

                  Section 3.1 Grant of Security Interest. The Borrower hereby
grants to the Lender a security interest (the "Security Interest") in the
following collateral (the "Collateral"), as security for the payment and
performance of the Obligations:

         INVENTORY: All inventory of Borrower, as such term is defined in the
         UCC, whether now owned or hereafter acquired, whether consisting of
         whole goods, spare parts or components, supplies or materials, whether
         acquired, held or furnished for sale, for lease or under service
         contracts or for manufacture or processing, and wherever located;

         ACCOUNTS AND OTHER RIGHTS TO PAYMENT: Each and every right of Borrower
         to the payment of money, whether such right to payment now exists or
         hereafter arises, whether such right to payment arises out of a sale,
         lease or other disposition of goods or other property, out of a
         rendering of services, out of a loan, out of the overpayment of taxes
         or other liabilities, or otherwise arises under any contract or
         agreement, whether such right to payment is created, generated or
         earned by Borrower or by some other Person who subsequently transfers
         such Person's interest to Borrower, whether such right to payment is or
         is not already earned by performance, and howsoever such right to
         payment may be evidenced, together with all other rights and interests
         (including all liens and security interests) which Borrower may at any
         time have by law or agreement against any account debtor or other
         obligor obligated to make any such payment or against any property of
         such account debtor or other obligor; all including all of Borrower's
         rights to payment in the form of all present and future accounts,
         contract rights, loans and obligations receivable, chattel papers,
         bonds, notes and other debt instruments, tax refunds and rights to
         payment in the nature of general intangibles;

         EQUIPMENT: All of the Borrower's equipment, as such term is defined in
         the UCC whether now or hereafter owned, including all present and
         future machinery, vehicles, furniture, fixtures, manufacturing
         equipment, shop equipment, office and recordkeeping equipment, parts,
         tools, supplies, and including specifically the goods described in any
         equipment schedule or list herewith or hereafter furnished to the
         Secured Party by Borrower;

         GENERAL INTANGIBLES: All of Borrower's general intangibles, as such
         term is defined in the UCC, whether now owned or hereafter acquired,
         including all present and future contract rights, patents, patent

<PAGE>


         applications, copyrights, trademarks, trade names, trade secrets,
         customer or supplier lists and contracts, manuals, operating
         instructions, permits, franchises, the right to use Borrower's name,
         and the goodwill of Borrower's business; and

         INVESTMENT PROPERTY: All of Borrower's investment property, as such
         term is defined in the UCC, whether now owned or hereafter acquired,
         including but not limited to all securities, security entitlements,
         securities accounts, commodity contracts, commodity accounts, stocks,
         bonds, mutual fund shares, money market shares and U.S. Government
         securities; together with all substitutions and replacements for and
         products of any of the foregoing property and together with proceeds of
         any and all of the foregoing property and, in the case of all tangible
         property, together with all accessions and together with (i) all
         accessories, attachments, parts, equipment and repairs now or hereafter
         attached or affixed to or used in connection with any such goods, and
         (ii) all warehouse receipts, bills of lading and other documents of
         title now or hereafter covering such goods.

                  Section 3.2 Notification of Account Debtors and Other
Obligors. The Lender may at any time (either before or after the occurrence of
an Event of Default) notify any account debtor or other Person obligated to pay
the amount due that such right to payment has been assigned or transferred to
the Lender for security and shall be paid directly to the Lender. The Borrower
will join in giving such notice if the Lender so requests. At any time after the
Borrower or the Lender gives such notice to an account debtor or other obligor,
the Lender may, but need not, as the Borrower's agent and attorney-in-fact,
notify the United States Postal Service to change the address for delivery of
the Borrower's mail to any address designated by the Lender, otherwise intercept
the Borrower's mail, and receive, open and dispose of the Borrower's mail,
applying all Collateral as permitted under this Agreement and holding all other
mail for the Borrower's account or forwarding such mail to the Borrower's last
known address.

                  Section 3.3 Occupancy.

                  (a) The Borrower hereby irrevocably grants to the Lender the
         right to take possession of each premises where Borrower conducts its
         business and has any rights of possession (the "Premises") at any time
         during any Default Period.

                  (b) The Lender may use the Premises only to hold, process,
         manufacture, sell, use, store, liquidate, realize upon or otherwise
         dispose of goods that are Collateral and for other purposes that the
         Lender in good faith considers related.

                  (c) The Lender's right to hold the Premises shall terminate
         upon the earlier of payment in full of all Obligations, or final sale
         or disposition of all goods constituting Collateral and delivery of all
         such goods to purchasers.

                  (d) The Lender shall not be obligated to pay or account for
         any rent or other compensation for the possession or use of any of the
         Premises; provided, however, that if the Lender does pay or account for
         any rent or other compensation for the possession or use of any of the
         Premises, the Borrower shall reimburse the Lender promptly for the full
         amount thereof.

                  Section 3.4 Filing a Copy. A carbon, photographic, or other
reproduction of this Agreement or of a financing statement signed by Borrower is
sufficient as a financing statement.

                                   ARTICLE IV

                              Conditions of Lending

                  Section 4.1 Conditions Precedent to the Lender's Willingness
to Consider Making Advances. The Lender's willingness to consider making an
initial Hydra-Mac Revolving Advance hereunder shall be subject to the condition
precedent that the Lender shall have received all of the following, each in form
and substance satisfactory to the Lender:

                  (a) This Agreement, properly executed by the Borrower.

                  (b) The D&E Credit Agreement, properly executed by D&E.

                  (c) The MBS Credit Agreement, properly executed by MBS.

                  (d) The Note, properly executed by the Borrower.

<PAGE>


                  (e) A true and correct copy of any and all leases pursuant to
         which the Borrower is leasing the Premises, together with a landlord's
         disclaimer and consent with respect to each such lease.

                  (f) The Collateral Account Agreement, properly executed by the
         Borrower, D&E, MBS and Norwest Bank Minnesota, National Association.

                  (g) The Lockbox Agreement, properly executed by the Borrower,
         D&E, MBS and Norwest Bank Minnesota, National Association.

                  (h) Current searches of appropriate filing offices showing
         that (i) no state or federal tax liens have been filed and remain in
         effect against the Borrower, (ii) no financing statements or
         assignments of patents, trademarks or copyrights have been filed and
         remain in effect against the Borrower except those financing statements
         and assignments of patents, trademarks or copyrights relating to
         Permitted Liens or to liens held by Persons who have agreed in writing
         that upon receipt of proceeds of the Advances, they will deliver UCC
         releases and/or terminations and releases of such assignments of
         patents, trademarks or copyrights satisfactory to the Lender, and (iii)
         the Lender has duly filed all financing statements necessary to perfect
         the Security Interest, to the extent the Security Interest is capable
         of being perfected by filing.

                  (i) A certificate of the Borrower's Secretary certifying as to
         (i) the resolutions of the Borrower's directors, and if required, its
         shareholders, authorizing the execution, delivery and performance of
         the Loan Documents, (ii) the Borrower's articles of incorporation and
         bylaws, and (iii) the signatures of the Borrower's agents authorized to
         execute and deliver the Loan Documents and other instruments,
         agreements and certificates, including Advance requests, on the
         Borrower's behalf.

                  (j) A current certificate issued by the Secretary of State of
         Delaware, certifying that the Borrower is in compliance with all
         applicable organizational requirements of the State of Delaware.

                  (k) Evidence that the Borrower is duly licensed or qualified
         to transact business in all jurisdictions where the character of the
         property owned or leased or the nature of the business transacted by it
         makes such licensing or qualification necessary.

                  (l) A support agreement in favor of the Lender, properly
         executed by David M. Eichers, in his personal capacity.

                  (m) An opinion of counsel to the Borrower and the Guarantors,
         addressed to the Lender.

                  (n) Certificates of the insurance required hereunder, with all
         hazard insurance containing a lender's loss payable endorsement in the
         Lender's favor and with all liability insurance naming the Lender as an
         additional insured.

                  (o) A separate guaranty, properly executed by each Guarantor,
         pursuant to which each Guarantor unconditionally guarantees the full
         and prompt payment of all Obligations.

                  (p) The MRI Security Agreement, properly executed by MRI.

                  (q) Payment of the fees and commissions due through the date
         of the initial Hydra-Mac Revolving Advance and expenses incurred by the
         Lender through such date and required to be paid by the Borrower under
         Section 8.4, including all legal expenses incurred through the date of
         this Agreement.

                  (r) Such other documents as the Lender in its sole discretion
         may require.

                  Section 4.2 Conditions Precedent to All Hydra-Mac Revolving
Advances. The Lender will not consider any request for a Hydra-Mac Revolving
Advance unless on such date:

                  (a) the representations and warranties contained in Article V
         and the Disclosure are correct on and as of the date of such Hydra-Mac
         Revolving Advance as though made on and as of such date, except to the
         extent that such representations and warranties relate solely to an
         earlier date; and

                  (b) no event has occurred and is continuing, or would result
         from such Hydra-Mac Revolving Advance which constitutes a Default or an
         Event of Default.

<PAGE>


                                   ARTICLE V

                         Representations and Warranties

                  THE BORROWER REPRESENTS AND WARRANTS TO THE LENDER AS FOLLOWS:

                  Section 5.1 Name; Locations; Tax ID No.; Subsidiaries. During
its existence, the Borrower has done business solely under its corporate name as
set forth herein and under such trade names and such other corporate names as
disclosed to Lender in writing before this Agreement is signed and delivered.
The address of Borrower's chief executive office and principal place of business
and its federal tax identification number are set forth below its signature to
this Agreement. All Inventory is located at that location or at one of the other
locations disclosed to Lender in writing before this Agreement is signed and
delivered. The Borrower has no subsidiaries except as disclosed to Lender in
writing before this Agreement is signed and delivered.

                  Section 5.2 Financial Condition; No Adverse Change. Before
this Agreement was signed and delivered, the Borrower furnished the Lender
certain of its unaudited financial statements certified by the Borrower. Those
statements fairly present the Borrower's financial condition as of the dates
indicated therein and the results of its operations for the periods then ended
and were prepared in accordance with generally accepted accounting principles.
Since the date of the most recent financial statements, there has been no
material adverse change in the business, properties or condition (financial or
otherwise) of the Borrower.

                                   ARTICLE VI

                            Covenants of the Borrower

                  SO LONG AS THE HYDRA-MAC REVOLVING ADVANCES OR ANY AMOUNT
OWING TO LENDER HEREUNDER SHALL REMAIN UNPAID, THE BORROWER WILL COMPLY WITH THE
REQUIREMENTS IN THIS ARTICLE, UNLESS THE LENDER SHALL OTHERWISE CONSENT IN
WRITING.

                  Section 6.1 Reporting Requirements. The Borrower will deliver
to the Lender each of the following in form and detail acceptable to the Lender:

                  (a) as soon as available, and in any event within 90 days
         after the end of each fiscal year of the Borrower, the Borrower's
         audited financial statements prepared in accordance with GAAP; together
         with (i) copies of all management letters prepared by such accountants;
         (ii) a report signed by such accountants stating that in making the
         investigations necessary for said opinion they obtained no knowledge,
         except as specifically stated, of any Default or Event of Default
         hereunder and all relevant facts in reasonable detail to evidence, and
         the computations as to, whether or not the Borrower is in compliance
         with the requirements set forth in Section 6.7 and (iii) a certificate
         of the Borrower's chief financial officer stating that such financial
         statements have been prepared in accordance with GAAP, that they fairly
         present the Borrower's financial condition and the results of its
         operations, and whether or not such officer has knowledge of the
         occurrence of any Default or Event of Default hereunder and, if so,
         stating in reasonable detail the facts with respect thereto;

                  (b) as soon as available and in any event within 20 days after
         the end of each month, an unaudited/internal balance sheet and
         statement of income and retained earnings of the Borrower as at the end
         of and for such month and for the year to date period then ended,
         prepared in accordance with GAAP, subject to year-end audit
         adjustments; and accompanied by a certificate of the Borrower's chief
         financial officer, substantially in the form of Exhibit B hereto
         stating (i) that such financial statements have been prepared in
         accordance with GAAP, subject to year-end audit adjustments and fairly
         represent the Borrower's financial condition and the results of its
         operations, (ii) whether or not such officer has knowledge of the
         occurrence of any Default or Event of Default hereunder not theretofore
         reported and remedied and, if so, stating in reasonable detail the
         facts with respect thereto, and (iii) all relevant facts in reasonable
         detail to evidence, and the computations as to, whether or not the
         Borrower is in compliance with the requirements set forth in Section
         6.7;

                  (c) within 15 days after the end of each month, agings of the
         Borrower's accounts receivable and accounts payable and an accounts
         receivable certification as of the end of such month;

                  (d) as soon as available and in any event within 20 days of
         the end of each month, inventory certifications as of the end of such
         month;

                  (e) as soon as available, a copy of the checking account
         statement of the Borrower, including all deposit tickets, as of the
         last day of each month from each bank with which Borrower maintains a
         checking account,

<PAGE>


         such statements to be provided to the Lender directly by each such bank
         or by the Borrower with respect to a bank that is unwilling to send
         them to the Lender;

                  (f) at least 30 days before the beginning of each fiscal year
         of the Borrower, the projected balance sheets, income statements and
         statements of cash flow for each month of such year, each in reasonable
         detail, representing the Borrower's good faith projections and
         certified by the Borrower's chief financial officer as being the most
         accurate projections available and identical to the projections used by
         the Borrower for internal planning purposes, together with such
         supporting schedules and information as the Lender may in its
         discretion require; provided, however, that with respect to the
         Borrower's projections for the 1998 fiscal year, such projections shall
         be delivered to the Lender on or before December 31, 1997.

                  (g) as soon as available and in any event within 3 days after
         they are due, copies of tax payments due and paid and written notice of
         any and all taxes due but not paid;

                  (h) from time to time, with reasonable promptness, any and all
         receivables schedules, collection reports, deposit records, equipment
         schedules, copies of invoices to account debtors, shipment documents
         and delivery receipts for goods sold, and such other material, reports,
         records or information as the Lender may request; and

                  (i) before March 31 of each calendar year, the Borrower shall
         cause any and all Guarantors, along with John F. Luoma and David
         Eichers, to submit financial statements to the Lender, and certified by
         such party.

                  Section 6.2 Inspection. Upon the Lender's request, the
Borrower will permit any officer, employee, attorney, agent or accountant for
the Lender to audit, review, make extracts from or copy any and all records of
the Borrower and to inspect the Collateral at all times during ordinary business
hours.

                  Section 6.3 Account Verification. The Lender may at any time
and from time to time send, or request the Borrower to send, requests for
verification of Accounts or notices of assignment to account debtors and other
obligors. The Borrower authorizes the Lender to verify Accounts as frequently as
daily and the Borrower understands the Lender intends to do so by telephone
and/or in writing.

                  Section 6.4 No Other Liens. The Borrower will keep all
Collateral free and clear of all security interests, liens and encumbrances
except the Security Interest, purchase money security interests in equipment,
and other security interests approved by the Lender in writing.

                  Section 6.5 Insurance. The Borrower will at all times keep all
tangible Collateral insured against risks of fire (including so-called extended
coverage), theft, collision (for Collateral consisting of motor vehicles) and
such other risks and in such amounts as the Lender may reasonably request, with
a lender's loss payable clause in favor of Lender to the extent of its interest.

                  Section 6.6 Lockbox; Collateral Account. The Borrower has
provided the Lender with agreements regarding a lockbox and a collateral account
in connection with the collection of Accounts.

                  Section 6.7 Minimum Book Net Worth. The Borrower will cause
MRI to maintain, during each period described below, its consolidated Book Net
Worth, determined as at the end of each month, at an amount not less than the
amount set forth opposite such period:

<PAGE>


           --------------------- -------------------------------
                  Period             Minimum Book Net Worth
           --------------------- -------------------------------
              July 31, 1997                $1,800,000
           through October 30,
                  1997
           --------------------- -------------------------------
             October 31, 1997              $1,850,000
           through January 30,
                  1998
           --------------------- -------------------------------
             January 31, 1998              $1,900,000
            through April 29,
                  1998
           --------------------- -------------------------------
              April 30, 1998               $1,950,000
             through July 30,
                  1998
           --------------------- -------------------------------
            July 31, 1998 and              $2,030,000
               thereafter
           --------------------- -------------------------------

                  Section 6.8 Minimum Net Income. The Borrower shall achieve
Minimum Net Income, beginning in January of 1998, in accordance with covenant
amounts established by the Lender, in its sole discretion, based upon the
Borrower's projections to be delivered in accordance with Section 6.1(f) herein.

                  Section 6.9 No Sale or Transfer of Collateral and Other
Assets. The Borrower will not sell, lease, assign, transfer or otherwise dispose
of (i) the stock of any subsidiary, (ii) all or a substantial part of its
assets, or (iii) any Collateral or any interest therein (whether in one
transaction or in a series of transactions) to anyone other than the sale of
Inventory in the ordinary course of business.

                  Section 6.10 No Sale or Transfer of Shares of Borrower.
Borrower will cause each of its shareholders not to sell, transfer, pledge, or
grant a security interest in, any shares of stock of the Borrower.

                  Section 6.11 Place of Business; Name. The Borrower will not
change the location of its chief executive office or principal place of business
from that disclosed pursuant to Section 5.1. The Borrower will not permit any
tangible Collateral to be located in any state or area in which, in the event of
such location, a financing statement covering such Collateral would be required
to be, but has not in fact been, filed in order to perfect the Security
Interest. The Borrower will not change its name.

                  Section 6.12 Investments. The Borrower will not purchase or
hold beneficially any stock or other securities or evidences of indebtedness of,
make or permit to exist any loans or advances to, or make any investments or
acquire any interest whatsoever in, any other Person, including specifically but
without limitation any partnership, joint venture, or Affiliate, except:

                           (i) travel advances or loans to the Borrower's
                  officers and employees not exceeding at any one time an
                  aggregate of $10,000; and

                           (ii) advances in the form of progress payments,
                  prepaid rent not exceeding two (2) months or security
                  deposits.

                                  ARTICLE VII

                     Events of Default, Rights and Remedies

                  Section 7.1 Events of Default. An "Event of Default" as used
herein shall mean any of the following:

                  (a) Failure to pay the Note when demanded, and in this
         connection Borrower hereby waives presentment, notice of dishonor and
         protest;

                  (b) A petition shall be filed by or against the Borrower or
         any Guarantor under the United States Bankruptcy Code naming the
         Borrower or such Guarantor as debtor;

                  (c) Default in the performance, or breach, of any covenant or
         agreement of the Borrower contained in any Loan Document;

<PAGE>


                  (d) An event of default under and as defined in the D&E Credit
         Agreement shall occur and be continuing, or any other breach, default
         or event of default by or attributable to any Affiliate under any
         agreement between such Affiliate and the Lender;

                  (e) An event of default under and as defined in the MBS Credit
         Agreement shall occur and be continuing, or any other breach, default
         or event of default by or attributable to any Affiliate under any
         agreement between such Affiliate and the Lender.

                  Section 7.2 Rights and Remedies. As provided in Section 2.5,
the Lender may, at any time and for any reason, refuse to make any requested
Hydra-Mac Revolving Advance or demand payment of the Obligations. In addition,
upon the occurrence of an Event of Default or at any time thereafter, the Lender
may exercise any or all of the following rights and remedies:

                  (a) The Lender may exercise and enforce any and all rights and
         remedies available upon default to a secured party under the UCC,
         including the right to take possession of Collateral, or any evidence
         thereof, proceeding without judicial process or by judicial process
         (without a prior hearing or notice thereof, which the Borrower hereby
         expressly waives) and the right to sell, lease or otherwise dispose of
         any or all of the Collateral, and in connection therewith, the Borrower
         will on demand assemble the Collateral and make it available to the
         Lender at a place to be designated by the Lender which is reasonably
         convenient to both parties; 

                  (b) The Lender may exercise any other rights and remedies
         available to it by law or agreement. The remedies provided hereunder
         are cumulative.

                  Section 7.3 Certain Notices. If notice to the Borrower of any
intended disposition of Collateral or any other intended action is required by
law in a particular instance, such notice shall be deemed commercially
reasonable if given (in the manner specified in Section 8.3) at least 10
calendar days before the date of intended disposition or other action.

                                  ARTICLE VIII

                                  Miscellaneous

                  Section 8.1 Restatement of Old Credit Documents. This
Agreement is executed for the purpose of amending and restating the Old Credit
Documents.

                  Section 8.2 Release. The Borrower hereby absolutely and
unconditionally releases and forever discharges the Lender and any and all
parent corporations, subsidiary corporations, affiliated corporations, insurers,
indemnitors, successors and assigns thereof, together with all of the present
and former directors, officers, agents and employees of any of the foregoing,
from any and all claims, demands or causes of action of any kind, nature or
description, whether arising in law or equity or upon contract or tort or under
any state or federal law or otherwise, which the Borrower has had, now has or
has made claim to have against any such person for or by reason of any act,
omission, matter, cause or thing whatsoever arising from the beginning of time
to and including the date of this Agreement, whether such claims, demands and
causes of action are matured or unmatured or known or unknown.

                  Section 8.3 Addresses for Notices, Etc. Except as otherwise
expressly provided herein, all notices, requests, demands and other
communications provided for hereunder shall be in writing and shall be (i)
personally delivered, (ii) sent by first class United States mail, (iii) sent by
overnight courier of national reputation, or (iv) transmitted by telecopy, in
each case addressed or telecopied to the party to whom notice is being given at
its address or telecopy number as set forth below its signature to this
Agreement.

                  Section 8.4 Costs and Expenses. The Borrower agrees to pay on
demand all costs and expenses (including legal fees) incurred by the Lender in
connection with the Loan Documents and any other document or agreement related
thereto, and the transactions contemplated hereby, including wire transfer and
ACH charges, the cost of credit reports, overadvance fees, the expense of any
auditors and fees and expenses in enforcing this Agreement.

                  Section 8.5 Indemnity. In addition to the payment of expenses
pursuant to Section 8.4, the Borrower agrees to indemnify, defend and hold
harmless the Lender, and any of its participants, parent corporations,
subsidiary corporations, affiliated corporations, successor corporations, and
all present and future officers, directors, employees, attorneys and agents of
the foregoing (the "Indemnitees") from and against any of the following
(collectively, "Indemnified Liabilities"):

<PAGE>


                           (i) any and all transfer taxes, documentary taxes,
                  assessments or charges made by any governmental authority by
                  reason of the execution and delivery of this Agreement and the
                  other Loan Documents or the making of the Hydra-Mac Revolving
                  Advances;

                           (ii) any and all liabilities, losses, damages,
                  penalties, judgments, suits, claims, costs and expenses of any
                  kind or nature whatsoever (including, without limitation, the
                  reasonable fees and disbursements of counsel) in connection
                  with any investigative, administrative or judicial
                  proceedings, whether or not such Indemnitee shall be
                  designated a party thereto, which may be imposed on, incurred
                  by or asserted against any such Indemnitee, in any manner
                  related to or arising out of or in connection with the making
                  of the Hydra-Mac Revolving Advances, this Agreement and the
                  other Loan Documents or the use or intended use of the
                  proceeds of the Hydra-Mac Revolving Advances; and

                           (iii) any claim, loss or damage to which any
                  Indemnitee may be subjected as a result of any violation of
                  any federal, state, local or other governmental statute,
                  regulation, law, or ordinance dealing with the protection of
                  human health and the environment.

If any investigative, judicial or administrative proceeding arising from any of
the foregoing is brought against any Indemnitee, then the Borrower or counsel
designated by the Borrower and satisfactory to the Indemnitee, will resist and
defend such action, suit or proceeding to the extent and in the manner directed
by the Indemnitee. Each Indemnitee will use its best efforts to cooperate in the
defense of any such action, suit or proceeding. If the foregoing undertaking to
indemnify, defend and hold harmless may be held to be unenforceable because it
violates any law or public policy, the Borrower shall nevertheless make the
maximum contribution to the payment and satisfaction of each of the Indemnified
Liabilities which is permissible under applicable law. The Borrower's obligation
under this Section 8.5 shall survive the termination of this Agreement and the
discharge of the Borrower's other obligations hereunder.

                  Section 8.6 Binding Effect; Assignment; Counterparts;
Exchanging Information. The Loan Documents shall be binding upon and inure to
the benefit of the Borrower and the Lender and their respective successors and
assigns, except that the Borrower shall not have the right to assign its rights
thereunder or any interest therein without the prior written consent of the
Lender. This Agreement and other Loan Documents may be executed in any number of
counterparts, each of which when so executed and delivered shall be deemed to be
an original and all of which counterparts, taken together, shall constitute but
one and the same instrument. Without limiting the Lender's right to share
information regarding the Borrower and its Affiliates with the Lender's
participants, accountants, lawyers and other advisors, the Lender, Norwest
Corporation, and all direct and indirect subsidiaries of Norwest Corporation,
may exchange any and all information they may have in their possession regarding
the Borrower and its Affiliates, and the Borrower waives any right of
confidentiality it may have with respect to such exchange of such information.


                            [SIGNATURE PAGE FOLLOWS]

<PAGE>



                  Section 8.7 Governing Law; Jurisdiction, Venue; Waiver of Jury
Trial. This Agreement and the Note shall be governed by and construed in
accordance with the laws (other than conflict laws) of the State of Minnesota.
Each party consents to the personal jurisdiction of the state and federal courts
located in the State of Minnesota in connection with any controversy related to
this Agreement, waives any argument that venue in any such forum is not
convenient and agrees that any litigation initiated by any of them in connection
with this Agreement shall be venued in either the District Court of Hennepin
County, Minnesota located in Minneapolis, Minnesota, or the United States
District Court, District of Minnesota, Fourth Division. THE PARTIES WAIVE ANY
RIGHT TO TRIAL BY JURY IN ANY ACTION OR PROCEEDING BASED ON OR PERTAINING TO
THIS AGREEMENT.

                  IN WITNESS WHEREOF, the parties hereto have signed this
Agreement as of the date first above written.

NORWEST CREDIT, INC.                        HYDRA-MAC INTERNATIONAL, INC.

By 
   --------------------------------
     Roger A. Pfiffner                      By 
     Its Vice President                        ---------------------------------
                                                 John F. Luoma
Address:                                         Its President
Norwest Center
Sixth Street and Marquette Avenue           Address:
Minneapolis, Minnesota 55479-0152           1750 Yankee Doodle Road
Telecopy No. (612) 341-2472                 Suite 202
Federal Tax ID No. 41-1712687               Eagan, Minnesota 55121
                                            Telecopy No. (612) 405-9312
                                            Federal Tax ID No. 41-1831948


     [SIGNATURE PAGE TO AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT)

<PAGE>


                                      Exhibit A to Credit and Security Agreement

                                 REVOLVING NOTE

$1,800,000                                                Minneapolis, Minnesota
                                                               November 25, 1997

                  For value received, the undersigned, HYDRA-MAC INTERNATIONAL,
INC., a Delaware corporation (the "Borrower"), hereby promises to pay ON DEMAND
to the order of NORWEST CREDIT, INC., a Minnesota corporation (the "Lender"), at
its main office in Minneapolis, Minnesota, or at any other place designated at
any time by the holder hereof, in lawful money of the United States of America
and in immediately available funds, the principal sum of One Million Eight
Hundred Thousand Dollars ($1,800,000) or, if less, the aggregate unpaid
principal amount of all Hydra-Mac Revolving Advances made by the Lender to the
Borrower under the Credit and Security Agreement of even date herewith by and
between the Lender and the Borrower (as the same may hereafter be amended,
supplemented or restated from time to time, the "Credit Agreement") together
with interest on the principal amount hereunder remaining unpaid from time to
time (computed on the basis of actual days elapsed in a 360-day year) from the
date of the initial Hydra-Mac Revolving Advance until this Note is fully paid at
the rate from time to time in effect under the Credit Agreement.

                  This Note is issued pursuant, and is subject, to the Credit
Agreement, which provides, among other things, for acceleration hereof. This
Note is the Hydra-Mac Revolving Note referred to in the Credit Agreement and is
subject to the Credit Agreement. To the extent this Note evidences the
Borrower's Obligation to pay Existing Revolving Advances, this Note is issued in
substitution for and replacement of but not in payment of the Borrower's
promissory note dated as of January 29, 1997, payable to the order of the Lender
in the original principal amount of $1,200,000.

                                       HYDRA-MAC INTERNATIONAL, INC.


                                       By 
                                          -----------------------------------
                                            John F. Luoma
                                            Its President

<PAGE>


                                      Exhibit B to Credit and Security Agreement

                             COMPLIANCE CERTIFICATE

To:               Roger A. Pfiffner
                  Norwest Credit, Inc.
Date:                      __________________, 199___
Subject:          Hydra-Mac International, Inc.
                           Financial Statements of Parent

                  In accordance with our Amended and Restated Credit and
Security Agreement dated as of November __, 1997 (the "Credit Agreement"),
attached are the financial statements of Magnum Resources, Inc. (the "Parent")
as of and for ______________, 19___ (the "Reporting Date") and the year-to-date
period then ended (the "Current Financials"). All terms used in this certificate
have the meanings given in the Credit Agreement.

                  I certify that the Current Financials have been prepared in
accordance with GAAP, subject to year-end audit adjustments, and fairly present
the Parent's financial condition as of the date thereof.

                  Events of Default. (Check one):

                  |_| The undersigned does not have knowledge of the occurrence
                  of a Default or Event of Default under the Credit Agreement.

                  |_| The undersigned has knowledge of the occurrence of a
                  Default or Event of Default under the Credit Agreement and
                  attached hereto is a statement of the facts with respect to
                  thereto.

                  Financial Covenants. I further hereby certify as follows:

         1. Minimum Book Net Worth. Pursuant to Section 6.7 of the Credit
Agreement, as of the Reporting Date, the Parent's Book Net Worth was
$____________ which |_| satisfies |_| does not satisfy the requirement that such
amount be not less than $_____________ on the Reporting Date as set forth in
table below:

           --------------------- ---------------------------------
                  Period              Minimum Book Net Worth
           --------------------- ---------------------------------
              July 31, 1997                 $1,800,000
           through October 30,
                   1997
           --------------------- ---------------------------------
             October 31, 1997               $1,850,000
           through January 30,
                   1998
           --------------------- ---------------------------------
             January 31, 1998               $1,900,000
            through April 29,
                   1998
           --------------------- ---------------------------------
              April 30, 1998                $1,950,000
             through July 30,
                   1998
           --------------------- ---------------------------------
            July 31, 1998 and               $2,030,000
                thereafter
           --------------------- ---------------------------------


                  Attached hereto are all relevant facts in reasonable detail to
evidence, and the computations of the financial covenants referred to above.
These computations were made in accordance with GAAP.

                                            HYDRA-MAC INTERNATIONAL, INC.

                                            By 
                                               --------------------------------
                                                 Dave Eichers
                                                 Its Secretary

<PAGE>


                          CREDIT AND SECURITY AGREEMENT
                          Dated as of November 25 1997

                  MAGNUM BUSINESS SYSTEMS, INC., a [Minnesota] corporation (the
"Borrower"), and NORWEST CREDIT, INC., a Minnesota corporation (the "Lender"),
hereby agree as follows:

                                    ARTICLE I

                                   Definitions

                  Section 1.1 Definitions. For all purposes of this Agreement,
except as otherwise expressly provided or unless the context otherwise requires:

                  "Accounts" means the aggregate unpaid obligations of customers
         and other account debtors to the Borrower arising out of the sale or
         lease of goods or rendition of services by the Borrower on an open
         account or deferred payment basis, whether now existing or hereafter
         arising.

                  "Advance" means a Hydra-Mac Revolving Advance, a D&E Revolving
         Advance and a MBS Revolving Advance.

                  "Affiliate" or "Affiliates" means D&E, Hydra-Mac, MRI, Power
         Equipment and any other Person controlled by, controlling or under
         common control with the Borrower, including (without limitation) any
         Subsidiary of the Borrower. For purposes of this definition, "control,"
         when used with respect to any specified Person, means the power to
         direct the management and policies of such Person, directly or
         indirectly, whether through the ownership of voting securities, by
         contract or otherwise.

                  "Agreement" means this Credit and Security Agreement, as
         amended, supplemented and restated from time to time.

                  "Base Rate" means the rate of interest publicly announced from
         time to time by Norwest Bank Minnesota, National Association as its
         "base rate" or, if such bank ceases to announce a rate so designated,
         any similar successor rate designated by the Lender.

                  "Book Net Worth" means the aggregate of the common
         stockholders' equity of the Borrower, determined in accordance with
         GAAP.

                  "Collateral" has the meaning given in Section 3.1.

                  "Collateral Account Agreement" means the Amended and Restated
         Collateral Account Agreement of even date herewith by and among the
         Borrower, D&E, Hydra-Mac, Norwest Bank Minnesota, National Association,
         and the Lender.

                  "D&E" means D&E Machining, Inc., a North Dakota corporation.

                  "D&E Borrowing Base" has the meaning given in the D&E Credit
         Agreement.

                  "D&E Credit Agreement" means that certain Credit and Security
         Agreement of even date herewith, by and between D&E and the Lender, as
         amended, supplemented and restated from time to time.

                  "D&E Revolving Advance" has the meaning given in the D&E
         Credit Agreement.

                  "Debt" of any Person means all items of indebtedness or
         liability which in accordance with GAAP would be included in
         determining total liabilities as shown on the liabilities side of a
         balance sheet of that Person as at the date as of which Debt is to be
         determined. For purposes of determining a Person's aggregate Debt at
         any time, "Debt" shall also include the aggregate payments required to
         be made by such Person at any time under any lease that is considered a
         capitalized lease under GAAP.

                  "Default" means an event that, with giving of notice or
         passage of time or both, would constitute an Event of Default. 

                  "Default Period" means any period of time beginning on the
         first day of any month during which a Default or Event of Default has
         occurred and ending on the date the Lender notifies the Borrower in
         writing that such Default or Event of Default has been cured or waived.

                  "Default Rate" means an annual rate equal to three and
         one-half percent (3.5%) over the Floating Rate, which rate shall change
         when and as the Floating Rate changes.

                  "Eligible Accounts" means all unpaid Accounts, net of any
         credits, except the following shall not in any event be deemed Eligible
         Accounts:

                           (i) That portion of Accounts over 90 days past
                  invoice date or, if the Lender in its discretion has
                  determined that a particular dated Account of 120 days or less
                  from invoice date may be eligible, that portion of such
                  Account which is more than 30 days past the stated due date;

                           (ii) That portion of Accounts that are disputed or
                  subject to a claim of offset or a contra account;

<PAGE>

                           (iii) That portion of Accounts not yet earned by the
                  final delivery of goods or rendition of services, as
                  applicable, by the Borrower to the customer;

                           (iv) Accounts owed by any unit of government, whether
                  foreign or domestic (provided, however, that there shall be
                  included in Eligible Accounts that portion of Accounts owed by
                  such units of government for which the Borrower has provided
                  evidence satisfactory to the Lender that (A) the Lender has a
                  first priority perfected security interest and (B) such
                  Accounts may be enforced by the Lender directly against such
                  unit of government under all applicable laws);

                           (v) Accounts owed by an account debtor located
                  outside the United States or Canada which are not backed by a
                  bank letter of credit assigned to the Lender, in the
                  possession of the Lender and acceptable to the Lender in all
                  respects, in its sole discretion;

                           (vi) Accounts owed by an account debtor that is the
                  subject of bankruptcy proceedings or has gone out of business;

                           (vii) Accounts owed by a shareholder, subsidiary,
                  Affiliate, officer or employee of the Borrower;

                           (viii) Accounts not subject to a duly perfected
                  security interest in favor of the Lender or which are subject
                  to any lien, security interest or claim in favor of any Person
                  other than the Lender;

                           (ix) That portion of Accounts that have been
                  restructured, extended, amended or modified;

                           (x) That portion of Accounts that constitutes finance
                  charges, service charges or sales or excise taxes; and

                           (xi) Accounts, or portions thereof, otherwise deemed
                  ineligible by the Lender in its sole discretion.

                  "Event of Default" has the meaning specified in Section 7.1.

                  "Floating Rate" means an annual rate equal to the sum of the
         Base Rate plus four and one-half percent (4.5%), which annual rate
         shall change when and as the Base Rate changes.

                  "GAAP" means generally accepted accounting principles, applied
         on a basis consistent with the accounting practices applied in the
         financial statements described in Section 5.2.

                  "Guarantors" means D&E, Hydra-Mac, Power Equipment and MRI and
         any other Person guaranteeing payment of any of the Obligations.
      
                  "Hydra-Mac" means Hydra-Mac International, Inc., a Delaware
         corporation.

                  "Hydra-Mac Borrowing Base" has the meaning given in the
         Hydra-Mac Credit Agreement.

                  "Hydra-Mac Credit Agreement" means that certain Amended and
         Restated Credit and Security Agreement of even date herewith, by and
         between Hydra-Mac and the Lender, as amended, supplemented and restated
         from time to time.

                  "Hydra-Mac Revolving Advance" has the meaning given in the
         Hydra-Mac Credit Agreement.

                  "Inventory" means all of the Borrower's inventory, as such
         term is defined in the UCC, whether now owned or hereafter acquired.

                  "Loan Documents" means this Agreement, the Note, the Security
         Documents and the Disclosure by the Borrower in favor of the Lender of
         even date herewith.

                  "Lockbox Agreement" means the Amended and Restated Lockbox
         Agreement by and among the Borrower, D&E, Hydra-Mac, Norwest Bank
         Minnesota, National Association, and the Lender, of even date herewith.

                  "Maturity Date" has the meaning given in Section 2.4.

                  "Maximum Line" means $1,800,000.

                  "MBS Borrowing Base" means the lesser of:
                           (a)      the MBS Maximum Line; or
                           (b)      80% of Eligible Accounts.

                  "MBS Maximum Line" means $400,000.

                  "MBS Revolving Advance" has the meaning given in Section 2.1.

                  "MBS Revolving Note" means the Borrower's revolving promissory
         note, payable to the order of the Lender in substantially the form of
         Exhibit A hereto.

                  "MRI" means Magnum Resources, Inc., a Delaware corporation,
         and the parent of the Borrower, D&E and Hydra-Mac.

                  "MRI Security Agreement" means the Amended and Restated
         Security Agreement of even date herewith, executed by MRI and delivered
         to the Lender.

                  "Net Income" means fiscal year-to-date after-tax net income,
         decreased by the sum of any extraordinary, non-operating or non-cash
         income recorded by the Borrower and increased by any
<PAGE>


         extraordinary, non-cash or non-operating expense or loss recorded by
         the Borrower, as determined in accordance with GAAP.

                  "Note" means the MBS Revolving Note.

                  "Obligations" means each and every debt, liability and
         obligation of every type and description which the Borrower may now or
         at any time hereafter owe to the Lender, including all indebtedness
         arising under this Agreement, the Note or any other loan or credit
         agreement or guaranty between the Borrower and the Lender, whether now
         in effect or hereafter entered into.

                  "Original Maturity Date" means July 10, 1999.

                  "Overall Borrowing Base" means, at any time and subject to
         change from time to time in the Lender's sole discretion, the lesser
         of:

                           (a)      the Maximum Line; or
                           (b)      the sum of the Hydra-Mac Borrowing Base, the
                   D&E Borrowing Base, and the MBS Borrowing Base.

                  "Person" means any individual, corporation, partnership, joint
         venture, limited liability company, association, joint-stock company,
         trust, unincorporated organization or government or any agency or
         political subdivision thereof.

                  "Power Equipment" means Power Equipment Corp., a Minnesota
         corporation.

                  "Premises" means all premises where the Borrower conducts its
         business and has any rights of possession.

                  "Security Documents" means this Agreement, the Collateral
         Account Agreement and the Lockbox Agreement, each of even date herewith
         and by and among the Borrower, D&E, Hydra-Mac, the Lender and Norwest
         Bank Minnesota, National Association.

                  "Security Interest" has the meaning given in Section 3.1.

                  "Termination Date" means the Maturity Date or the date the
         Lender demands payment pursuant to Section 2.4 or Section 7.2, or the
         Borrower terminates the Credit Facility pursuant to Section 2.5, as the
         case may be.

                  "UCC" means the Uniform Commercial Code as in effect from time
         to time in the State of Minnesota.

                                   ARTICLE II

                     Amount and Terms of the Credit Facility

                  Section 2.1 Revolving Advances. The Lender may, in its sole
discretion, make advances to the Borrower from time to time from the date this
Agreement is signed and delivered to the Termination Date, on the terms and
subject to the conditions herein set forth (each a "MBS Revolving Advance"). The
Lender shall not consider any request for a MBS Revolving Advance if, after
giving effect to such requested MBS Revolving Advance, (i) the sum of the
outstanding and unpaid MBS Revolving Advances, plus the outstanding and unpaid
D&E Revolving Advances, plus the outstanding and unpaid Hydra-Mac Revolving
Advances would exceed the Overall Borrowing Base or (ii) the sum of the
outstanding and unpaid MBS Revolving Advances would exceed the MBS Borrowing
Base. The Borrower's obligation to pay the MBS Revolving Advances shall be
evidenced by the MBS Revolving Note and shall be secured by the Collateral.
Within the limits set forth in this Section 2.1, the Borrower may request MBS
Revolving Advances, prepay, and request additional MBS Revolving Advances. The
Borrower shall make each request for a MBS Revolving Advance to the Lender
before 11:00 a.m. (Minneapolis time) of the day of the requested MBS Revolving
Advance. Requests may be made in writing or by telephone.

                  Section 2.2 Interest; Default Interest. All interest shall be
payable monthly in arrears on the first day of the month and on demand.

                  (a) REVOLVING NOTE. Except as set forth in subsection (c) and
         (d), the outstanding principal balance of the MBS Revolving Advances
         shall bear interest at the Floating Rate.

                  (b) MINIMUM INTEREST CHARGE. Notwithstanding the interest
         payable pursuant to subsections (a) and (c), the Borrower, D&E and
         Hydra-Mac, collectively, shall pay to the Lender interest on the
         Hydra-Mac Revolving Advances, the D&E Revolving Advances and the MBS
         Revolving Advances, collectively, of not less than $37,500 per calendar
         year during the term of this Agreement (prorated for less than full
         years), and the Borrower, D&E and MBS, in a manner within the sole
         discretion of the Borrower, D&E and MBS, shall pay any deficiency
         between such minimum interest charge and the amount of interest
         otherwise calculated under Sections (a) and (c) in arrears on the first
         day of each year.

                  (c) DEFAULT INTEREST RATE. At any time during any Default
         Period, in the Lender's sole discretion and without waiving any of its
         other rights and remedies, the principal of the MBS Revolving Advances
         outstanding from

<PAGE>


         time to time shall bear interest at the Default Rate, effective for any
         periods designated by the Lender from time to time during that Default
         Period.

                  (d) USURY. In any event no rate change shall be put into
         effect which would result in a rate greater than the highest rate
         permitted by law.

                  Section 2.3 Administration Fees. The Borrower hereby agrees
to pay the Lender, on demand, audit fees in connection with any audits or
inspections conducted by the Lender of any Collateral or the Borrower's
operations or business at the rates established from time to time by the Lender
as its audit fees (which fees are currently $62.50 per hour per auditor),
together with all actual out-of-pocket costs and expenses incurred in conducting
any such audit or inspection.

                  Section 2.4 Discretionary Nature of Credit Facility; Automatic
Renewal. THE LENDER MAY AT ANY TIME AND FOR ANY REASON REFUSE TO MAKE A MBS
REVOLVING ADVANCE AND/OR DEMAND PAYMENT OF THE MBS REVOLVING ADVANCES AND
TERMINATE THIS AGREEMENT WHETHER BORROWER IS OR IS NOT IN COMPLIANCE WITH THIS
AGREEMENT. The Lender need not show that an adverse change has occurred in the
Borrower's condition, financial or otherwise, in order to refuse to make any
requested Advance or to demand payment of the MBS Revolving Advances. Unless
terminated by the Lender at any time or by the Borrower pursuant to Section 2.5,
this Agreement shall remain in effect until the Original Maturity Date and,
thereafter, shall automatically renew for successive one year periods. Each such
anniversary date is herein referred to as a "Maturity Date".

                  Section 2.5 Termination by Borrower.

                  (a) TERMINATION BY BORROWER. The Borrower may terminate this
         Agreement at any time and, subject to payment and performance of all
         Obligations, may obtain any release or termination of the Security
         Interest to which the Borrower is otherwise entitled by law by (i)
         giving at least 30 days' prior written notice to the Lender of the
         Borrower's intention to terminate this Agreement, and (ii) paying the
         Lender a prepayment fee in accordance with subsection (b) if the
         Borrower terminates this Agreement effective as of any date other than
         a Maturity Date; provided, however, if the Borrower elects to terminate
         this Agreement, the Borrower must also terminate the Hydra-Mac Credit
         Agreement, in accordance with Section 2.6(a) of such agreement, and the
         D&E Credit Agreement in accordance with Section 2.5(a) of such
         agreement.

                  (b) PREPAYMENT FEE. If the Borrower desires to terminate this
         Agreement as of any date other than a Maturity Date, or as of a
         Maturity Date but without giving at least 90 days' prior written notice
         thereof, it shall (i) give at least 30 days' prior written notice to
         the Lender of the Borrower's intention to do so, and (ii) pay to the
         Lender a prepayment fee of 3% of the MBS Maximum Line; provided,
         however, that such prepayment fee shall be waived if such prepayment is
         made because of increased cash flow generated from the Borrower's
         operations, in the normal course of business, or refinancing by an
         affiliate of the Lender.

                  Section 2.6 Mandatory Prepayment. Without notice or demand, if
the outstanding principal balance of the MBS Revolving Advances shall at any
time exceed the MBS Borrowing Base or if the outstanding principal balance of
the Advances shall at any time exceed the Overall Borrowing Base, the Borrower
shall immediately prepay the MBS Revolving Advances to the extent necessary to
eliminate such excess.

                  Section 2.7 MBS Revolving Advances Without Request. The
Borrower hereby authorizes the Lender, in its discretion, at any time or from
time to time without the Borrower's request, to make MBS Revolving Advances to
pay accrued interest, fees, uncollected items that have been applied to the
Obligations, and other Obligations due and payable from time to time.

                                  ARTICLE III

                                Security Interest

                  Section 3.1 Grant of Security Interest. The Borrower hereby
grants to the Lender a security interest (the "Security Interest") in the
following collateral (the "Collateral"), as security for the payment and
performance of the Obligations:

         INVENTORY: All inventory of Borrower, as such term is defined in the
         UCC, whether now owned or hereafter acquired, whether consisting of
         whole goods, spare parts or components, supplies or materials, whether
         acquired, held or furnished for sale, for lease or under service
         contracts or for manufacture or processing, and wherever located;

         ACCOUNTS AND OTHER RIGHTS TO PAYMENT: Each and every right of Borrower
         to the payment of money, whether such right to payment now exists or
         hereafter arises, whether such right to payment arises out of a sale,
         lease or other disposition of goods or other property, out of a
         rendering of services, out of a 

<PAGE>


         loan, out of the overpayment of taxes or other liabilities, or
         otherwise arises under any contract or agreement, whether such right to
         payment is created, generated or earned by Borrower or by some other
         Person who subsequently transfers such Person's interest to Borrower,
         whether such right to payment is or is not already earned by
         performance, and howsoever such right to payment may be evidenced,
         together with all other rights and interests (including all liens and
         security interests) which Borrower may at any time have by law or
         agreement against any account debtor or other obligor obligated to make
         any such payment or against any property of such account debtor or
         other obligor; all including all of Borrower's rights to payment in the
         form of all present and future accounts, contract rights, loans and
         obligations receivable, chattel papers, bonds, notes and other debt
         instruments, tax refunds and rights to payment in the nature of general
         intangibles;

         EQUIPMENT: All of the Borrower's equipment, as such term is defined in
         the UCC whether now or hereafter owned, including all present and
         future machinery, vehicles, furniture, fixtures, manufacturing
         equipment, shop equipment, office and recordkeeping equipment, parts,
         tools, supplies, and including specifically the goods described in any
         equipment schedule or list herewith or hereafter furnished to the
         Secured Party by Borrower;

         GENERAL INTANGIBLES: All of Borrower's general intangibles, as such
         term is defined in the UCC, whether now owned or hereafter acquired,
         including all present and future contract rights, patents, patent
         applications, copyrights, trademarks, trade names, trade secrets,
         customer or supplier lists and contracts, manuals, operating
         instructions, permits, franchises, the right to use Borrower's name,
         and the goodwill of Borrower's business; and

         INVESTMENT PROPERTY: All of Borrower's investment property, as such
         term is defined in the UCC, whether now owned or hereafter acquired,
         including but not limited to all securities, security entitlements,
         securities accounts, commodity contracts, commodity accounts, stocks,
         bonds, mutual fund shares, money market shares and U.S. Government
         securities; together with all substitutions and replacements for and
         products of any of the foregoing property and together with proceeds of
         any and all of the foregoing property and, in the case of all tangible
         property, together with all accessions and together with (i) all
         accessories, attachments, parts, equipment and repairs now or hereafter
         attached or affixed to or used in connection with any such goods, and
         (ii) all warehouse receipts, bills of lading and other documents of
         title now or hereafter covering such goods.

                  Section 3.2 Notification of Account Debtors and Other
Obligors. The Lender may at any time (either before or after the occurrence of
an Event of Default) notify any account debtor or other Person obligated to pay
the amount due that such right to payment has been assigned or transferred to
the Lender for security and shall be paid directly to the Lender. The Borrower
will join in giving such notice if the Lender so requests. At any time after the
Borrower or the Lender gives such notice to an account debtor or other obligor,
the Lender may, but need not, as the Borrower's agent and attorney-in-fact,
notify the United States Postal Service to change the address for delivery of
the Borrower's mail to any address designated by the Lender, otherwise intercept
the Borrower's mail, and receive, open and dispose of the Borrower's mail,
applying all Collateral as permitted under this Agreement and holding all other
mail for the Borrower's account or forwarding such mail to the Borrower's last
known address.

                  Section 3.3 Occupancy.

                  (a) The Borrower hereby irrevocably grants to the Lender the
         right to take possession of each premises where Borrower conducts its
         business and has any rights of possession (the "Premises") at any time
         during any Default Period.

                  (b) The Lender may use the Premises only to hold, process,
         manufacture, sell, use, store, liquidate, realize upon or otherwise
         dispose of goods that are Collateral and for other purposes that the
         Lender in good faith considers related.

                  (c) The Lender's right to hold the Premises shall terminate
         upon the earlier of payment in full of all Obligations, or final sale
         or disposition of all goods constituting Collateral and delivery of all
         such goods to purchasers.

                  (d) The Lender shall not be obligated to pay or account for
         any rent or other compensation for the possession or use of any of the
         Premises; provided, however, that if the Lender does pay or account for
         any rent or other compensation for the possession or use of any of the
         Premises, the Borrower shall reimburse the Lender promptly for the full
         amount thereof.

                  Section 3.4 Filing a Copy. A carbon, photographic, or other
reproduction of this Agreement or of a financing statement signed by Borrower is
sufficient as a financing statement.

<PAGE>


                                   ARTICLE IV

                              Conditions of Lending

                  Section 4.1 Conditions Precedent to the Lender's Willingness
to Consider Making MBS Revolving Advances. The Lender's willingness to consider
making an initial MBS Revolving Advance hereunder shall be subject to the
condition precedent that the Lender shall have received all of the following,
each in form and substance satisfactory to the Lender:

                  (a) This Agreement, properly executed by the Borrower.

                  (b) The D&E Credit Agreement, properly executed by D&E.

                  (c) The Hydra-Mac Credit Agreement, properly executed by
         Hydra-Mac.

                  (d) The Note, properly executed by the Borrower.

                  (e) A true and correct copy of any and all leases pursuant to
         which the Borrower is leasing the Premises, together with a landlord's
         disclaimer and consent with respect to each such lease.

                  (f) The Collateral Account Agreement, properly executed by the
         Borrower, D&E, Hydra-Mac and Norwest Bank Minnesota, National
         Association.

                  (g) The Lockbox Agreement, properly executed by the Borrower,
         D&E, Hydra-Mac and Norwest Bank Minnesota, National Association.

                  (h) Current searches of appropriate filing offices showing
         that (i) no state or federal tax liens have been filed and remain in
         effect against the Borrower, (ii) no financing statements or
         assignments of patents, trademarks or copyrights have been filed and
         remain in effect against the Borrower except those financing statements
         and assignments of patents, trademarks or copyrights relating to
         Permitted Liens or to liens held by Persons who have agreed in writing
         that upon receipt of proceeds of the Advances, they will deliver UCC
         releases and/or terminations and releases of such assignments of
         patents, trademarks or copyrights satisfactory to the Lender, and (iii)
         the Lender has duly filed all financing statements necessary to perfect
         the Security Interest, to the extent the Security Interest is capable
         of being perfected by filing.

                  (i) A certificate of the Borrower's Secretary certifying as to
         (i) the resolutions of the Borrower's directors, and if required, its
         shareholders, authorizing the execution, delivery and performance of
         the Loan Documents, (ii) the Borrower's articles of incorporation and
         bylaws, and (iii) the signatures of the Borrower's agents authorized to
         execute and deliver the Loan Documents and other instruments,
         agreements and certificates, including Advance requests, on the
         Borrower's behalf.

                  (j) A current certificate issued by the Secretary of State of
         [Minnesota], certifying that the Borrower is in compliance with all
         applicable organizational requirements of the State of [Minnesota].

                  (k) Evidence that the Borrower is duly licensed or qualified
         to transact business in all jurisdictions where the character of the
         property owned or leased or the nature of the business transacted by it
         makes such licensing or qualification necessary.

                  (l) A support agreement in favor of the Lender, properly
         executed by David M. Eichers, in his personal capacity.

                  (m) An opinion of counsel to the Borrower and the Guarantors,
         addressed to the Lender.

                  (n) Certificates of the insurance required hereunder, with all
         hazard insurance containing a lender's loss payable endorsement in the
         Lender's favor and with all liability insurance naming the Lender as an
         additional insured.

                  (o) A separate guaranty, properly executed by each Guarantor,
         pursuant to which each Guarantor unconditionally guarantees the full
         and prompt payment of all Obligations.

                  (p) The MRI Security Agreement, properly executed by MRI.

<PAGE>


                  (q) Payment of the fees and commissions due through the date
         of the initial MBS Revolving Advance and expenses incurred by the
         Lender through such date and required to be paid by the Borrower under
         Section 8.3, including all legal expenses incurred through the date of
         this Agreement.

                  (r) Such other documents as the Lender in its sole discretion
         may require.

                  Section 4.2 Conditions Precedent to All MBS Revolving
Advances. The Lender will not consider any request for an MBS Revolving Advance
unless on such date:

                  (a) the representations and warranties contained in Article V
         and the Disclosure are correct on and as of the date of such MBS
         Revolving Advance as though made on and as of such date, except to the
         extent that such representations and warranties relate solely to an
         earlier date; and

                  (b) no event has occurred and is continuing, or would result
         from such MBS Revolving Advance which constitutes a Default or an Event
         of Default.

                                   ARTICLE V

                         Representations and Warranties

                  THE BORROWER REPRESENTS AND WARRANTS TO THE LENDER AS FOLLOWS:

                  Section 5.1 Name; Locations; Tax ID No.; Subsidiaries. During
its existence, the Borrower has done business solely under its corporate name as
set forth herein and under such trade names and such other corporate names as
disclosed to Lender in writing before this Agreement is signed and delivered.
The address of Borrower's chief executive office and principal place of business
and its federal tax identification number are set forth below its signature to
this Agreement. All Inventory is located at that location or at one of the other
locations disclosed to Lender in writing before this Agreement is signed and
delivered. The Borrower has no subsidiaries except as disclosed to Lender in
writing before this Agreement is signed and delivered.

                  Section 5.2 Financial Condition; No Adverse Change. Before
this Agreement was signed and delivered, the Borrower furnished the Lender
certain of its unaudited financial statements certified by the Borrower. Those
statements fairly present the Borrower's financial condition as of the dates
indicated therein and the results of its operations for the periods then ended
and were prepared in accordance with generally accepted accounting principles.
Since the date of the most recent financial statements, there has been no
material adverse change in the business, properties or condition (financial or
otherwise) of the Borrower.

                                   ARTICLE VI

                            Covenants of the Borrower

                  So long as the MBS Revolving Advances or any amount owing to
Lender hereunder shall remain unpaid, the Borrower will comply with the
requirements in this Article, unless the Lender shall otherwise consent in
writing.

                  Section 6.1 Reporting Requirements. The Borrower will deliver
to the Lender each of the following in form and detail acceptable to the Lender:

                  (a)as soon as available, and in any event within 90 days after
         the end of each fiscal year of the Borrower, the Borrower's audited
         financial statements prepared in accordance with GAAP; together with
         (i) copies of all management letters prepared by such accountants; (ii)
         a report signed by such accountants stating that in making the
         investigations necessary for said opinion they obtained no knowledge,
         except as specifically stated, of any Default or Event of Default
         hereunder and all relevant facts in reasonable detail to evidence, and
         the computations as to, whether or not the Borrower is in compliance
         with the requirements set forth in Section 6.7 and (iii) a certificate
         of the Borrower's chief financial officer stating that such financial
         statements have been prepared in accordance with GAAP, that they fairly
         present the Borrower's financial condition and the results of its
         operations, and whether or not such officer has knowledge of the
         occurrence of any Default or Event of Default hereunder and, if so,
         stating in reasonable detail the facts with respect thereto;

                  (b)as soon as available and in any event within 20 days after
         the end of each month, an unaudited/internal balance sheet and
         statement of income and retained earnings of the Borrower as at the end
         of and for such month and for the year to date period then ended,
         prepared in accordance with GAAP, subject to year-end audit

<PAGE>


         adjustments; and accompanied by a certificate of the Borrower's chief
         financial officer, substantially in the form of Exhibit B hereto
         stating (i) that such financial statements have been prepared in
         accordance with GAAP, subject to year-end audit adjustments and fairly
         represent the Borrower's financial condition and the results of its
         operations, (ii) whether or not such officer has knowledge of the
         occurrence of any Default or Event of Default hereunder not theretofore
         reported and remedied and, if so, stating in reasonable detail the
         facts with respect thereto, and (iii) all relevant facts in reasonable
         detail to evidence, and the computations as to, whether or not the
         Borrower is in compliance with the requirements set forth in Section
         6.7;

                  (c) within 15 days after the end of each month, agings of the
         Borrower's accounts receivable and accounts payable and an accounts
         receivable certification as of the end of such month;

                  (d) as soon as available and in any event within 20 days of
         the end of each month, inventory certifications as of the end of such
         month;

                  (e) as soon as available, a copy of the checking account
         statement of the Borrower, including all deposit tickets, as of the
         last day of each month from each bank with which Borrower maintains a
         checking account, such statements to be provided to the Lender directly
         by each such bank or by the Borrower with respect to a bank that is
         unwilling to send them to the Lender;

                  (f) at least 30 days before the beginning of each fiscal year
         of the Borrower, the projected balance sheets, income statements and
         statements of cash flow for each month of such year, each in reasonable
         detail, representing the Borrower's good faith projections and
         certified by the Borrower's chief financial officer as being the most
         accurate projections available and identical to the projections used by
         the Borrower for internal planning purposes, together with such
         supporting schedules and information as the Lender may in its
         discretion require; provided, however, that with respect to the
         Borrower's projections for the 1998 fiscal year, such projections shall
         be delivered to the Lender on or before December 31, 1997;

                  (g) as soon as available and in any event within 3 days after
         they are due, copies of tax payments due and paid and written notice of
         any and all taxes due but not paid;

                  (h) from time to time, with reasonable promptness, any and all
         receivables schedules, collection reports, deposit records, equipment
         schedules, copies of invoices to account debtors, shipment documents
         and delivery receipts for goods sold, and such other material, reports,
         records or information as the Lender may request; and

                  (i) before March 31 of each calendar year, the Borrower shall
         cause any and all Guarantors, along with John F. Luoma and David
         Eichers, to submit financial statements to the Lender, and certified by
         such party.

                  Section 6.2 Inspection. Upon the Lender's request, the
Borrower will permit any officer, employee, attorney, agent or accountant for
the Lender to audit, review, make extracts from or copy any and all records of
the Borrower and to inspect the Collateral at all times during ordinary business
hours.

                  Section 6.3 Account Verification. The Lender may at any time
and from time to time send, or request the Borrower to send, requests for
verification of Accounts or notices of assignment to account debtors and other
obligors. The Borrower authorizes the Lender to verify Accounts as frequently as
daily and the Borrower understands the Lender intends to do so by telephone
and/or in writing.

                  Section 6.4 No Other Liens. The Borrower will keep all
Collateral free and clear of all security interests, liens and encumbrances
except the Security Interest, purchase money security interests in equipment,
and other security interests approved by the Lender in writing.

                  Section 6.5 Insurance. The Borrower will at all times keep all
tangible Collateral insured against risks of fire (including so-called extended
coverage), theft, collision (for Collateral consisting of motor vehicles) and
such other risks and in such amounts as the Lender may reasonably request, with
a lender's loss payable clause in favor of Lender to the extent of its interest.

                  Section 6.6 Lockbox; Collateral Account. The Borrower has
provided the Lender with agreements regarding a lockbox and a collateral account
in connection with the collection of Accounts.

<PAGE>


                  Section 6.7 Minimum Book Net Worth. The Borrower will cause
MRI to maintain, during each period described below, its consolidated Book Net
Worth, determined as at the end of each month, at an amount not less than the
amount set forth opposite such period:

     ------------------------------ -------------------------------
                 Period                  Minimum Book Net Worth
     ------------------------------ -------------------------------
          July 31, 1997 through                $1,800,000
            October 30, 1997
     ------------------------------ -------------------------------
        October 31, 1997 through               $1,850,000
            January 30, 1998
     ------------------------------ -------------------------------
        January 31, 1998 through               $1,900,000
             April 29, 1998
     ------------------------------ -------------------------------
       April 30, 1998 through July             $1,950,000
                30, 1998
     ------------------------------ -------------------------------
      July 31, 1998 and thereafter             $2,030,000
     ------------------------------ -------------------------------

                  Section 6.8 Minimum Net Income. The Borrower shall achieve
Minimum Net Income, beginning in January of 1998, in accordance with covenant
amounts established by the Lender, in its sole discretion, based upon the
Borrower's projections to be delivered in accordance with Section 6.1(f) herein.

                  Section 6.9 No Sale or Transfer of Collateral and Other
Assets. The Borrower will not sell, lease, assign, transfer or otherwise dispose
of (i) the stock of any subsidiary, (ii) all or a substantial part of its
assets, or (iii) any Collateral or any interest therein (whether in one
transaction or in a series of transactions) to anyone other than the sale of
Inventory in the ordinary course of business.

                  Section 6.10 No Sale or Transfer of Shares of Borrower.
Borrower will cause each of its shareholders not to sell, transfer, pledge, or
grant a security interest in, any shares of stock of the Borrower.

                  Section 6.11 Place of Business; Name. The Borrower will not
change the location of its chief executive office or principal place of business
from that disclosed pursuant to Section 5.1. The Borrower will not permit any
tangible Collateral to be located in any state or area in which, in the event of
such location, a financing statement covering such Collateral would be required
to be, but has not in fact been, filed in order to perfect the Security
Interest. The Borrower will not change its name.

                  Section 6.12 Investments. The Borrower will not purchase or
hold beneficially any stock or other securities or evidences of indebtedness of,
make or permit to exist any loans or advances to, or make any investments or
acquire any interest whatsoever in, any other Person, including specifically but
without limitation any partnership, joint venture or Affiliate, except:

                  (a)travel advances or loans to the Borrower's officers and
         employees not exceeding at any one time an aggregate of $10,000; and

                  (b)advances in the form of progress payments, prepaid rent not
         exceeding two (2) months or security deposits.

                                  ARTICLE VII

                     Events of Default, Rights and Remedies

                  Section 7.1 Events of Default. An "Event of Default" as used
herein shall mean any of the following:

                  (a)Failure to pay the Note when demanded, and in this
         connection Borrower hereby waives presentment, notice of dishonor and
         protest;

                  (b)A petition shall be filed by or against the Borrower or any
         Guarantor under the United States Bankruptcy Code naming the Borrower
         or such Guarantor as debtor;

                  (c)Default in the performance, or breach, of any covenant or
         agreement of the Borrower contained in any Loan Document;

<PAGE>


                  (d)An event of default under and as defined in the D&E Credit
         Agreement shall occur and be continuing, or any other breach, default
         or event of default by or attributable to any Affiliate under any
         agreement between such Affiliate and the Lender;

                  (e)An event of default under and as defined in the Hydra-Mac
         Credit Agreement shall occur and be continuing, or any other breach,
         default or event of default by or attributable to any Affiliate under
         any agreement between such Affiliate and the Lender.

                  Section 7. 2 Rights and Remedies. As provided in Section 2.4,
the Lender may, at any time and for any reason, refuse to make any requested MBS
Revolving Advance or demand payment of the Obligations. In addition, upon the
occurrence of an Event of Default or at any time thereafter, the Lender may
exercise any or all of the following rights and remedies:

                  (a)The Lender may exercise and enforce any and all rights and
         remedies available upon default to a secured party under the UCC,
         including the right to take possession of Collateral, or any evidence
         thereof, proceeding without judicial process or by judicial process
         (without a prior hearing or notice thereof, which the Borrower hereby
         expressly waives) and the right to sell, lease or otherwise dispose of
         any or all of the Collateral, and in connection therewith, the Borrower
         will on demand assemble the Collateral and make it available to the
         Lender at a place to be designated by the Lender which is reasonably
         convenient to both parties;

                  (b)The Lender may exercise any other rights and remedies
         available to it by law or agreement. The remedies provided hereunder
         are cumulative.

                  Section 7. 3 Certain Notices. If notice to the Borrower of any
intended disposition of Collateral or any other intended action is required by
law in a particular instance, such notice shall be deemed commercially
reasonable if given (in the manner specified in Section 8.2) at least 10
calendar days before the date of intended disposition or other action.

                                  ARTICLE VIII

                                  Miscellaneous

                  Section 8. 1 Release. The Borrower hereby absolutely and
unconditionally releases and forever discharges the Lender and any and all
parent corporations, subsidiary corporations, affiliated corporations, insurers,
indemnitors, successors and assigns thereof, together with all of the present
and former directors, officers, agents and employees of any of the foregoing,
from any and all claims, demands or causes of action of any kind, nature or
description, whether arising in law or equity or upon contract or tort or under
any state or federal law or otherwise, which the Borrower has had, now has or
has made claim to have against any such person for or by reason of any act,
omission, matter, cause or thing whatsoever arising from the beginning of time
to and including the date of this Agreement, whether such claims, demands and
causes of action are matured or unmatured or known or unknown.

                  Section 8. 2 Addresses for Notices, Etc. Except as otherwise
expressly provided herein, all notices, requests, demands and other
communications provided for hereunder shall be in writing and shall be (i)
personally delivered, (ii) sent by first class United States mail, (iii) sent by
overnight courier of national reputation, or (iv) transmitted by telecopy, in
each case addressed or telecopied to the party to whom notice is being given at
its address or telecopy number as set forth below its signature to this
Agreement.

                  Section 8. 3 Costs and Expenses. The Borrower agrees to pay on
demand all costs and expenses (including legal fees) incurred by the Lender in
connection with the Loan Documents and any other document or agreement related
thereto, and the transactions contemplated hereby, including wire transfer and
ACH charges, the cost of credit reports, overadvance fees, the expense of any
auditors and fees and expenses in enforcing this Agreement.

                  Section 8. 4 Indemnity. In addition to the payment of expenses
pursuant to Section 8.3, the Borrower agrees to indemnify, defend and hold
harmless the Lender, and any of its participants, parent corporations,
subsidiary corporations, affiliated corporations, successor corporations, and
all present and future officers, directors, employees, attorneys and agents of
the foregoing (the "Indemnitees") from and against any of the following
(collectively, "Indemnified Liabilities"):

                  (i)any and all transfer taxes, documentary taxes, assessments
         or charges made by any governmental authority by reason of the
         execution and delivery of this Agreement and the other Loan Documents
         or the making of the MBS Revolving Advances;

<PAGE>


                  (ii)any and all liabilities, losses, damages, penalties,
         judgments, suits, claims, costs and expenses of any kind or nature
         whatsoever (including, without limitation, the reasonable fees and
         disbursements of counsel) in connection with any investigative,
         administrative or judicial proceedings, whether or not such Indemnitee
         shall be designated a party thereto, which may be imposed on, incurred
         by or asserted against any such Indemnitee, in any manner related to or
         arising out of or in connection with the making of the MBS Revolving
         Advances, this Agreement and the other Loan Documents or the use or
         intended use of the proceeds of the MBS Revolving Advances; and

                  (iii)any claim, loss or damage to which any Indemnitee may be
         subjected as a result of any violation of any federal, state, local or
         other governmental statute, regulation, law, or ordinance dealing with
         the protection of human health and the environment.

If any investigative, judicial or administrative proceeding arising from any of
the foregoing is brought against any Indemnitee, then the Borrower or counsel
designated by the Borrower and satisfactory to the Indemnitee, will resist and
defend such action, suit or proceeding to the extent and in the manner directed
by the Indemnitee. Each Indemnitee will use its best efforts to cooperate in the
defense of any such action, suit or proceeding. If the foregoing undertaking to
indemnify, defend and hold harmless may be held to be unenforceable because it
violates any law or public policy, the Borrower shall nevertheless make the
maximum contribution to the payment and satisfaction of each of the Indemnified
Liabilities which is permissible under applicable law. The Borrower's obligation
under this Section 8.4 shall survive the termination of this Agreement and the
discharge of the Borrower's other obligations hereunder.

                  Section 8. 5 Binding Effect; Assignment; Counterparts;
Exchanging Information. The Loan Documents shall be binding upon and inure to
the benefit of the Borrower and the Lender and their respective successors and
assigns, except that the Borrower shall not have the right to assign its rights
thereunder or any interest therein without the prior written consent of the
Lender. This Agreement and other Loan Documents may be executed in any number of
counterparts, each of which when so executed and delivered shall be deemed to be
an original and all of which counterparts, taken together, shall constitute but
one and the same instrument. Without limiting the Lender's right to share
information regarding the Borrower and its Affiliates with the Lender's
participants, accountants, lawyers and other advisors, the Lender, Norwest
Corporation, and all direct and indirect subsidiaries of Norwest Corporation,
may exchange any and all information they may have in their possession regarding
the Borrower and its Affiliates, and the Borrower waives any right of
confidentiality it may have with respect to such exchange of such information.

                            [SIGNATURE PAGE FOLLOWS]

<PAGE>


                  Section 8. 6 Governing Law; Jurisdiction, Venue; Waiver of
Jury Trial. This Agreement and the Note shall be governed by and construed in
accordance with the laws (other than conflict laws) of the State of Minnesota.
Each party consents to the personal jurisdiction of the state and federal courts
located in the State of Minnesota in connection with any controversy related to
this Agreement, waives any argument that venue in any such forum is not
convenient and agrees that any litigation initiated by any of them in connection
with this Agreement shall be venued in either the District Court of Hennepin
County, Minnesota located in Minneapolis, Minnesota, or the United States
District Court, District of Minnesota, Fourth Division. THE PARTIES WAIVE ANY
RIGHT TO TRIAL BY JURY IN ANY ACTION OR PROCEEDING BASED ON OR PERTAINING TO
THIS AGREEMENT.

                  IN WITNESS WHEREOF, the parties hereto have signed this
Agreement as of the date first above written.

NORWEST CREDIT, INC.                        MAGNUM BUSINESS SYSTEMS, INC.

By __________________________________       By _________________________________
     Roger A. Pfiffner                           John F. Luoma
     Its Vice President                          Its President
Address:
Norwest Center                              Address:
Sixth Street and Marquette Avenue           1750 Yankee Doodle Road
Minneapolis, Minnesota 55479-0152           Suite 202
Telecopy No. (612) 341-2472                 Eagan, Minnesota 55121
Federal Tax ID No. 41-1712687               Telecopy No. (612) 405-9312
                                            Federal Tax ID No. 41-1888230

                [SIGNATURE PAGE TO CREDIT AND SECURITY AGREEMENT]

<PAGE>


                                      Exhibit A to Credit and Security Agreement

                                 REVOLVING NOTE

$400,000                                                  Minneapolis, Minnesota
                                                               November 25, 1997

                  For value received, the undersigned, MAGNUM BUSINESS SYSTEMS,
INC., a Minnesota corporation (the "Borrower"), hereby promises to pay ON DEMAND
to the order of NORWEST CREDIT, INC., a Minnesota corporation (the "Lender"), at
its main office in Minneapolis, Minnesota, or at any other place designated at
any time by the holder hereof, in lawful money of the United States of America
and in immediately available funds, the principal sum of Four Hundred Thousand
Dollars ($400,000) or, if less, the aggregate unpaid principal amount of all MBS
Revolving Advances made by the Lender to the Borrower under the Credit and
Security Agreement of even date herewith by and between the Lender and the
Borrower (as the same may hereafter be amended, supplemented or restated from
time to time, the "Credit Agreement") together with interest on the principal
amount hereunder remaining unpaid from time to time (computed on the basis of
actual days elapsed in a 360-day year) from the date of the initial MBS
Revolving Advance until this Note is fully paid at the rate from time to time in
effect under the Credit Agreement.

                  This Note is the MBS Revolving Note as defined in the Credit
Agreement and is subject to the Credit Agreement.

                                     MAGNUM BUSINESS SYSTEMS, INC.

                                     By _________________________________
                                          John F. Luoma
                                          Its President

<PAGE>


                                                Exhibit B to Credit and Security
                                                Agreement

                             COMPLIANCE CERTIFICATE

To:               Roger A. Pfiffner
                  Norwest Credit, Inc.
Date:             __________________, 199___
Subject:          Magnum Business Systems, Inc.
                  Financial Statements of Parent

                  In accordance with our Credit and Security Agreement dated as
of November __, 1997 (the "Credit Agreement"), attached are the consolidated
financial statements of Magnum Resources, Inc. (the "Parent"), as of and for
______________, 19___ (the "Reporting Date") and the year-to-date period then
ended (the "Current Financials"). All terms used in this certificate have the
meanings given in the Credit Agreement.

                  I certify that the Current Financials have been prepared in
accordance with GAAP, subject to year-end audit adjustments, and fairly present
the Parent's financial condition as of the date thereof.

                  Events of Default. (Check one):

                  [ ] The undersigned does not have knowledge of the occurrence
                  of a Default or Event of Default under the Credit Agreement.

                  [ ] The undersigned has knowledge of the occurrence of a
                  Default or Event of Default under the Credit Agreement and
                  attached hereto is a statement of the facts with respect to
                  thereto.

                  Financial Covenants. I further hereby certify as follows:

                  1.Minimum Book Net Worth. Pursuant to Section 6.7 of the
Credit Agreement, as of the Reporting Date, the Parent's Book Net Worth was
$____________ which [ ] satisfies [ ] does not satisfy the requirement that such
amount be not less than $_____________ on the Reporting Date as set forth in
table below:

     ------------------------------ -------------------------------
                 Period                  Minimum Book Net Worth
     ------------------------------ -------------------------------
          July 31, 1997 through                $1,800,000
            October 30, 1997
     ------------------------------ -------------------------------
        October 31, 1997 through               $1,850,000
            January 30, 1998
     ------------------------------ -------------------------------
        January 31, 1998 through               $1,900,000
             April 29, 1998
     ------------------------------ -------------------------------
       April 30, 1998 through July             $1,950,000
                30, 1998
     ------------------------------ -------------------------------
      July 31, 1998 and thereafter             $2,030,000
     ------------------------------ -------------------------------


                  Attached hereto are all relevant facts in reasonable detail to
evidence, and the computations of the financial covenants referred to above.
These 998 through April 29, 1998$1,900,000April 30, 1998 through July 30,
1998$1,950,000July 31, 1998 and thereafter computations were made in accordance
with GAAP.

                                           MAGNUM BUSINESS SYSTEMS, INC.
                                           By _______________________________
                                           David M. Eichers
                                           Its Secretary


<TABLE> <S> <C>


<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MAGNUM
RESOURCES, INC. AND SUBSIDIARIES CONSOLIDATED FINANCIAL STATEMENTS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          JUL-31-1997
<PERIOD-END>                               OCT-31-1997
<CASH>                                           2,000
<SECURITIES>                                         0
<RECEIVABLES>                                1,863,000
<ALLOWANCES>                                   (28,000)
<INVENTORY>                                  1,962,000
<CURRENT-ASSETS>                             3,883,000
<PP&E>                                       4,261,000
<DEPRECIATION>                              (1,993,000)
<TOTAL-ASSETS>                               6,248,000
<CURRENT-LIABILITIES>                        3,526,000
<BONDS>                                        707,000
                                0
                                          0
<COMMON>                                       104,000
<OTHER-SE>                                   1,830,000
<TOTAL-LIABILITY-AND-EQUITY>                 6,248,000
<SALES>                                      3,744,000
<TOTAL-REVENUES>                             3,744,000
<CGS>                                        3,046,000
<TOTAL-COSTS>                                3,046,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                 3,000
<INTEREST-EXPENSE>                              96,000
<INCOME-PRETAX>                                 36,000
<INCOME-TAX>                                    (3,000)
<INCOME-CONTINUING>                             39,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    39,000
<EPS-PRIMARY>                                      .00
<EPS-DILUTED>                                      .00
        


</TABLE>


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