Document:

CONSULTING AGREEMENT

     This consulting agreement is dated December 17, 2004, and is between John
G. Nikkel ("Nikkel") and Unit Corporation, a Delaware corporation (the
"Corporation").

     Nikkel has elected to retire as an employee and Chief Executive Officer of
the Corporation effective April 1, 2005 and will cease to be an officer of the
Corporation as of that date.

     The board of directors of the Corporation wishes to secure the services of
Nikkel as a consultant to the Corporation and Nikkel is willing to act in that
capacity following his retirement.

     The Corporation and Nikkel wish to enter into this agreement to describe
their obligations to each other and the scope of Nikkel's services to the
Corporation as an independent contractor and consultant to the Corporation after
his retirement.

     The parties therefore agree as follows:

1. Term of Agreement. This agreement is for a term of 1 year starting on the
date of Nikkel's retirement unless it is sooner terminated by mutual written
agreement of the parties. In the event of Nikkel's death during the term of this
agreement, the obligations of the parties under this agreement shall terminate.

     The parties, by mutual written agreement, may extend the term of this
agreement for successive 1 year periods at any time before the termination of
the then existing term of this agreement.

2. Consulting Fees. In consideration of Nikkel's obligations under this
agreement, the Corporation shall pay Nikkel an annual consulting fee of $70,000,
with payments to be made monthly in accordance with the Corporation's usual
procedures. This compensation shall be paid beginning as of Nikkel's retirement
date and ending on the termination of this agreement.

     During the term of this agreement the Corporation shall make available to
Nikkel secretarial services and office space.

3. Consulting Services.

     3.1 Duration and Scope. During the term of this agreement, Nikkel shall
serve as a consultant to the Corporation (including its subsidiaries, affiliates
and joint venture partners). Nikkel will provide the advice and counsel to the
Corporation as reasonably requested by the Chief Executive Officer of the
Corporation. Unless otherwise requested, Nikkel shall attend the weekly
exploration meetings held by the Corporation's subsidiary Unit Petroleum Company
to assist in the decisions normally made during those meetings.

     3.2 Compliance with Laws. Nikkel shall comply at his expense with all
applicable provisions of workers' compensation laws, unemployment compensation
laws, federal social security law, the Fair Labor Standards Act, federal, state
and local income tax laws, and all other applicable federal, state and local
laws, regulations and codes applicable to his status as an independent
contractor.

     3.3 Status. As a consultant to the Corporation, Nikkel shall act as an
independent contractor. Nikkel shall not have the status of an employee of the
Corporation. Nikkel shall be solely responsible for and shall pay all such
amounts of applicable federal and state income and self employment taxes. Except
as otherwise provided in this agreement, Nikkel shall not be eligible to
participate in any employee benefit, group insurance or compensation plans or

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programs maintained by the Corporation; provided, however, that any rights that
Nikkel may have under these plans or programs because of his prior status as an
employee and officer of the Corporation (or his status as a director of the
Corporation) shall not be affected by this agreement. The Corporation shall not
provide Social Security, unemployment compensation, disability insurance,
workers ' compensation or similar coverage, or any other statutory employment
benefit, to Nikkel.

     3.4 Reimbursement of Reasonable Expenses. On presentment to the Corporation
of appropriate documentation of his expenses, the Corporation shall reimburse
Nikkel under guidelines similar to those applicable to the Corporation's
officers for reasonable expenses incurred by Nikkel during the performance of
his consulting services.

4. Protection of the Corporation's Interests.

     4.1 Protection of Trade Secrets. For the term of this agreement, Nikkel
shall not, without the prior written consent of the Corporation, disclose or use
for any purpose (except in the course of his consulting services with the
Corporation and in furtherance of the Corporation's business) confidential
information or proprietary data of the Corporation, its subsidiaries, affiliates
and joint venture partners, except as required by applicable law or legal
process. Nikkel agrees to deliver to the Corporation at the termination of this
agreement, or at such other time as the Corporation may request, all memoranda,
notes, plans, records, reports and other documents (and copies thereof) relating
to the business of the Corporation, its subsidiaries, affiliates and joint
venture partners, that Nikkel may then possess or have under his control.

     4.2 Limitation on Services Provided to Others. During the term of this
agreement, Nikkel shall not, directly or indirectly:

          (a) Engage in any business or activity in which the Corporation or any
subsidiary, affiliate or joint venture partner of the Corporation is engaged
(provided, however, that the purchase, sale and leasing of oil and gas mineral
interests or participating in the drilling of oil and gas wells by Nikkel shall
not be deemed to be a violation of this provision but nothing in this agreement
will relieve Nikkel of any fiduciary duties he may owe to the Corporation); nor

          (b) Be employed by, render services of any kind to, advise or receive
compensation in any form from, nor invest or participate in any manner or
capacity in, any entity or person that directly or indirectly engages in such
business or activity.

     This Subsection will not preclude investments in a corporation whose stock
is traded on a public market and of which Nikkel owns less than a significant
interest.

     4.3 Nonsolicitation. During the term of this agreement, Nikkel shall not,
directly or indirectly:

          (a) Attempt to cause any employee of the Corporation or any
subsidiary, affiliate or joint venture partner to leave his or her employment;
nor

          (b) Knowingly advise or provide information to any person in
connection with an attempt by such person to cause any employee of the
Corporation or any subsidiary, affiliate or joint venture partner to leave his
or her employment.

     4.4 Modification by Court. If any of the covenants contained in subsections
4.1, 4.2 and 4.3 above is determined to be unenforceable because of the duration
of the covenant or the area covered by it, then the court or arbitrator making
the determination shall have the power to reduce the duration of the covenant or
the area covered by it, and the covenants, in their reduced form, will be
enforceable.

     4.5 Different Jurisdictions. If any of the covenants set forth in
Subsections 4.1, 4.2 and 4.3 above is determined to be wholly unenforceable by
the courts or arbitrators of any domestic or foreign jurisdiction, then the
determination shall not bar or in any way affect the Corporation's right to

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relief in the courts or in arbitration proceedings of any other jurisdiction
with respect to any breach of such covenants in such other jurisdiction. Such
covenants, as they relate to each jurisdiction, shall be severable into
independent covenants and shall be governed by the laws of the jurisdiction
where a breach occurs.

     4.6 Purpose of Covenants. Nikkel and the Corporation agree that the
covenants in Subsections 4.1, 4.2 and 4.3 above are reasonable and necessary to
protect the confidentiality of the trade secrets and other proprietary
information concerning the business of the Corporation and its subsidiaries,
affiliates and joint venture partners that was acquired by Nikkel as an employee
of the Corporation and during the course of his consulting services under this
Agreement.

     4.7 Repayment of Gains. Nikkel and the Corporation agree that the principal
purpose of entering into this agreement was to motivate Nikkel to contribute to
the Corporation's success and to increase the Corporation's value. Nikkel and
the Corporation also agree that any breach of the covenants set forth in
Subsections 4.1, 4.2 and 4.3 above would be contrary to the purpose of this
agreement. In the event that Nikkel takes any action contrary to any of the
covenants set forth in Subsections 4.1, 4.2 and 4.3 above, Nikkel shall on
demand pay the Corporation an amount equal to the total amount of all cash
compensation paid to Nikkel under this agreement, whether that cash compensation
was paid before or after the time when Nikkel takes the contrary action.

5. Miscellaneous Provisions.

     5.1 Waiver. No provisions of this agreement can be modified, waived or
discharged unless the modification, waiver or discharge is agreed to in writing
and signed by Nikkel and the Corporation. No waiver by either party of any
breach of, or of compliance with, any condition or provision of this agreement
by the other party shall be considered a waiver of any other condition or
provision or of the same condition or provision at another time.

     5.2 Assignment and Successors; The Corporation. The Corporation shall
require any successor (whether direct or indirect and whether by purchase,
lease, merger, consolidation, liquidation or otherwise) to all or substantially
all of the Corporation's business and/or assets, by an agreement in substance
and form satisfactory to Nikkel, to assume this agreement and to perform this
agreement in the same manner and to the same extent as the Corporation would be
required to perform it in the absence of a succession. For all purposes under
this agreement, the term "Corporation" shall include any successor to the
Corporation's business and/or assets that executes and delivers the assumption
agreement described in this Subsection 5.2 or that becomes bound by this
agreement by operation of law. The rights and benefits of Nikkel under this
agreement may not be anticipated, assigned, alienated, or subject to attachment,
garnishment, levy, execution, or other legal or equitable process except as
required by law. Any attempt by Nikkel to anticipate, alienate, assign, sell,
transfer, pledge, encumber, or charge the same shall be void.

     5.3 Arbitration. Any dispute or controversy arising under or in connection
with this agreement shall be settled exclusively by arbitration in Tulsa,
Oklahoma, in accordance with the rules of the American Arbitration Association
then in effect. Judgment may be entered on the arbitrator's award in any court
having jurisdiction. Within 30 days following the conclusion of any arbitration
proceeding (notwithstanding any appeal), the Corporation shall pay all
reasonable attorneys' fees and related expenses incurred by Nikkel in connection
with any such arbitration; provided, however, that the Corporation's
reimbursement obligation under this sentence shall be limited to $15,000 in the
event that the Corporation is the prevailing party in the action and $30,000 if
Nikkel is the prevailing party in the action. For purposes of the preceding
sentence, if there is disagreement concerning who is the prevailing party, then
the parties shall request that the arbitrator hearing the dispute determine the
point and the parties agree to be bound by the arbitrator's determination.

     5.4 Taxes. All payments made under this agreement shall be subject to any
required withholding of applicable taxes.

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     5.5 Whole Agreement. No agreements, representations or understandings
(whether oral or written and whether express or implied) which are not expressly
set forth in this agreement have been made or entered into by either party with
respect to the subject matter hereof.

     5.6 Choice of Law. The validity, interpretation, construction and
performance of this agreement shall be governed by the laws of the State of
Oklahoma.

     5.7 Severability. The invalidity or unenforceability of any provision or
provisions of this agreement shall not affect the validity or enforceability of
any other provision, which shall remain in full force and effect.

     5.8 Delivery of Notice. Notices and all other communications contemplated
by this agreement shall be in writing and shall be deemed to have been duly
given when personally delivered or when mailed by certified mail, return receipt
requested and postage prepaid. In the case of the Nikkel, mailed notices shall
be addressed to him at the home address which he most recently communicated to
the Corporation in writing. In the case of the Corporation, mailed notices shall
be addressed to its corporate headquarters, and all notices shall be directed to
the attention of its Secretary.

     IN WITNESS WHEREOF, each of the parties has signed this agreement, in the
case of the Corporation by its duly authorized officer, as of the day and year
first above written.

------------------------
John G. Nikkel

Unit Corporation

----------------------
By:  Larry D. Pinkston
Its:  President

                                  Page 4 of 4EMPLOYMENT AGREEMENT

DATE:      December 17, 2004

PARTIES:   Techne Corporation, a
           Minnesota corporation
           614 McKinley Place N.E.
           Minneapolis, Minnesota 55413

           Gregory J. Melsen

AGREEMENTS:

                             ARTICLE 1.
              TERM OF EMPLOYMENT:  DUTIES AND SUPERVISION

     1.1)  Parties.  The parties to this Agreement are Gregory J. Melsen
("Employee") and Techne Corporation ("Company").  As used herein, Company
refers to Techne Corporation and its subsidiaries including Research and
Diagnostic Systems, Inc. ("R&D"), unless specifically provided otherwise.
All of the rights and obligations created by this Agreement may be performed
by or enforced by or against the Company or R&D or other appropriate
subsidiary.

     1.2)  Term of Employment.  The Company hereby employs Employee as Vice
President of Finance and Chief Financial Officer of the Company for the term
beginning December 17, 2004 and continuing through June 30, 2008 unless
employment terminates earlier as provided in Article 5 hereof.

     1.3)  Duties and Supervision.  During the term of this Agreement,
Employee agrees to devote his full time and best efforts to the business and
affairs of the Company, and to perform such services and duties Employee may
from time to time be assigned by the Company, and specifically its President.

                               ARTICLE 2.
                              COMPENSATION

     2.1)  Salary.  During the initial period of this Agreement (December 17,
2004 through June 30, 2005), the Company shall pay to Employee as base
compensation for services to be rendered hereunder an annual salary of
$220,000, to be paid bi-weekly or in accordance with the usual payroll
practices of the Company. Each subsequent fiscal year during the term of
Employee's employment by the Company, under this Agreement, Employee's salary
shall be reviewed but not reduced by the Compensation Committee of the
Company.

     2.2)  Management Incentive Bonus Plan.  During each fiscal year of the
term of Employee's employment, Employee shall be eligible to earn a bonus
equal to 40%, as herein defined, of his base compensation.  The performance
standards for earning such bonus shall be established annually by the
Compensation Committee of the Company and whether the standards have been met
shall be determined by the Compensation Committee but the eligibility for a
40% bonus shall not be amended during the term of this Agreement except with
the consent of Employee.  At least one-half of such bonus shall be paid in
the form of stock options with an aggregate exercise price equal to such one-
half of the  bonus amount.  Such options are to be granted immediately after
the receipt of the Company's final audit report of the fiscal year and the
exercise price is to be based on the market price of the Company's Common
Stock at the close of the market on the day they are granted.  The other one-
half of any bonus earned may be taken, at the election of the Employee,
either in cash or in additional stock options with an exercise price equal to
170% of such one-half of the bonus amount.

     2.3)  Other Employee Compensation and Benefits.  In addition to the
compensation and benefits provided to Employee in Sections 2.1 and 2.2
hereof, Employee shall be entitled to participate in other employee
compensation and benefit plans from time to time established by the Company
and made available generally to all employees.  Employee shall participate in
such compensation and benefit plans on an appropriate and comparable basis
determined by the Board of Directors by reference to all other employees
eligible for participation.  With regard to all insured benefits to be
provided to Employee, benefits shall be subject to due application by
Employee, the Company has no obligation to pay insured benefits directly and
such benefits are payable to Employee only by the insurers in accordance with
their policies. Employee shall not be reimbursed for unused personal days or
sick days.

                               ARTICLE 3.
                       PAYMENT OF CERTAIN EXPENSES

     3.1)  Business Expenses.  In order to enable Employee to better perform
the services required of him hereunder, the Company shall pay or reimburse
Employee for business expenses in accordance with policies to be determines
from time to time by the Board of Directors.  Employee agrees to submit
documentation of such expenses as may be reasonably required by Company.

                              ARTICLE 4.
            INVENTIONS, PROPRIETARY INFORMATION AND COMPETITION

     4.1)  Prior Agreement.  Neither the execution of this Agreement nor any
provision in it shall be interpreted as rescinding or revoking the Employee
Agreement With Respect To Inventions, Proprietary Information, and Unfair
Competition previously entered into between the Company and Employee as of
December 17, 2004 (the "Prior Agreement").  The Company and Employee hereby
agree that the terms of such Prior Agreement shall apply to all businesses of
the Company, including not only business conducted by the Company but also to
business conducted through Techne or any subsidiary or venture of Techne now
existing or hereafter created. The termination of this Employment Agreement
shall not terminate Employee's obligations under the Prior Agreement.

                                ARTICLE 5.
                               TERMINATION

     5.1)  Events of Termination.  Employee's employment shall terminate as
follows:

             (A)  By mutual written agreement of the parties;

             (B)  Upon death of Employee;

             (C)  Employee may terminate his employment at any time upon
     written notice provided to the Board of Directors at least 90 days
     prior to the effective date of termination.

             (D)  The Company may terminate Employee's employment as
     follows:

                  (i)  In the event of the merger, sale of the business,
             or change in control of the Company, provided that the salary
             and bonus continuation provisions of Article 6.1 of this
             Agreement are met.

                  (ii) By written notice to Employee, the Company may
             terminate Employee's employment immediately with cause.  For
             purposes of this Agreement, "cause" shall mean material
             dishonesty or gross misconduct on the part of Employee in the
             performance of Employee's duties hereunder, serious breach of
             Company policies or failure on the part of Employee to
             perform material duties assigned to Employee by the Company's
             President or Board of Directors.

                  (iii)	Upon the occurrence of physical or mental
             disability of Employee to such an extent that Employee is
             unable to carry on essential functions of Employee's
             position, with or without reasonable accommodation, and such
             inability continues for a period of three months.

     5.2)  Records and Files.  In the event of termination of employment of
Employee hereunder, possession of each corporate file and record shall be
retained by the Company, and Employee or his heirs, assigns and legal
representatives shall have no right whatsoever in any such material,
information or property.

                                 ARTICLE 6.
                           TERMINATION BENEFITS

     6.1)  Termination Benefits.  In the event Employee's employment by the
Company is terminated by the Company or an acquirer of the Company, in
connection with a merger, sale or "change in control" of the Company or
Techne, Employee shall be paid at the time of such termination an amount
equal to the base salary and benefits which would otherwise have been paid
under the terms of this Agreement had this Agreement continued to be enforced
or, for twelve (12) months from the date of termination, whichever period is
longer.  For purposes of this Section 6.1, "change in control" means the
acquisition in one or more transactions by a single party, or any number of
parties acting in concert, of a majority of the outstanding shares of voting
stock of the Company.

                                ARTICLE 7.
                              MODIFICATIONS

     7.1  Modifications.  Except as provided in Section 4.1 above, this
Agreement supersedes all prior agreements and understandings between the
parties relating to the employment of Employee by the Company and it may not
be changed or terminated orally.  No modification, termination, or attempted
waiver of any of the provisions of this Agreement shall be valid unless in
writing signed by the party against whom the same is sought to be enforced.

                                ARTICLE 8.
                      GOVERNING LAW AND SEVERABILITY

     8.1)  Governing Law.  The validity, enforceability, construction and
interpretation of this Agreement shall be governed by the laws of the State
of Minnesota.

     8.2)  Severability.  If any term of its Agreement is deemed
unenforceable, void, voidable, or illegal, such enforceable, void, voidable
or illegal term shall be deemed severable from all other terms of this
Agreement which shall continue in full force and effect and the Company and
Employee expressly acknowledge that a court of competent jurisdiction may, at
Company's request, modify and thereafter enforce any of the terms,
conditions, and covenants contained in this Agreement.

                               ARTICLE 9.
                             BINDING EFFECT

     9.1)  Binding Effect.  The breach by the Company of any other agreement
or instrument between the Company and Employee shall not excuse or waive
Employee's performance under, or compliance with, this Agreement.  This
Agreement shall be assignable by the Company and shall be binding upon and
inure to the benefit of the Company, its successors and assigns, and
Employee, his heirs, and legal representatives  The rights of Employee
hereunder are personal and may not be assigned or transferred except as may
be agreed to in writing by the Company.

                             ARTICLE 10.
                             ARBITRATION

     10.1) Arbitration.  Any dispute arising out of or relating to (i) this
Agreement or the alleged breach of it, or the making of this Agreement,
including claims of fraud in the inducement, or (ii) Employee's application
or candidacy for employment, employment and/or termination of employment with
the Company including, but is not limited to, any and all disputes, claims or
controversies relating to discrimination, harassment, retaliation, wrongful
discharge, and any and all other claims of any type under any federal or
state constitution or any federal, state, or local statutory or common law
shall be discussed between the disputing parties in a good faith effort to
arrive at a mutual settlement of any such controversy.  If, notwithstanding,
such dispute cannot be resolved, such dispute shall be settled by binding
arbitration.  Judgment upon the award rendered by the arbitrator may be
entered in any court having jurisdiction thereof.  The arbitrator shall be a
retired state or federal judge or an attorney who has practiced securities or
business litigation for at least 10 years.  If the parties cannot agree on an
arbitrator within 20 days, any party may request that the chief judge of the
District Court for Hennepin County, Minnesota, select an arbitrator.
Arbitration will be conducted pursuant to the provisions of this Agreement,
and the commercial arbitration rules of the American Arbitration Association,
unless such rules are inconsistent with the provisions of this Agreement, but
without submission of the dispute to such Association.  Limited civil
discovery shall be permitted for the production of documents and taking of
depositions.  Unresolved discovery disputes may be brought to the attention
of the arbitrator who may dispose of such dispute.  The arbitrator shall have
the authority to award any remedy or relief that a court of this state could
order or grant; provided, however, that punitive or exemplary damages shall
not be awarded. The arbitrator may award to the prevailing party, if any, as
determined by the arbitrator, all of its costs and fees, including the
arbitrator's fees, administrative fees, travel expenses, out-of-pocket
expenses and reasonable attorneys' fees.  Unless otherwise agreed by the
parties, the place of any arbitration proceedings shall be Hennepin County,
Minnesota.  This agreement to arbitrate does not include worker's
compensation claims or claims for unemployment compensation.

     IN WITNESS WHEREOF, the parties have executed this Agreement and caused
it to be dated as of the day and year first above written.

                                          TECHNE CORPORATION

                                          By   /s/ Thomas E. Oland
                                          Its  President

                                               "Company"

                                          /s/ Gregory J. Melsen
                                          Gregory J. Melsen

                                                "Employee"

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