Document:

EXHIBIT 4.1

                          MERCURY WASTE SOLUTIONS, INC.

                                STOCK OPTION PLAN
                                  (AS AMENDED)

1.       PURPOSE OF THE PLAN

         The purpose of this Stock Option Plan (the "Plan") of Mercury Waste
Solutions, Inc. (the "Company") is to provide an incentive to eligible employees
and directors whose present and potential contributions are important to the
continued success of the Company, to afford them an opportunity to acquire a
proprietary interest in the Company, and to enable the Company to enlist and
retain in its employ the best available talent for the successful conduct of its
business. It is intended that this purpose will be effected through the granting
of stock options.

2.       DEFINITIONS

         Wherever used in the Plan, the following terms have the meanings set
forth below:

         2.1 "Board of Directors" means the Board of Directors of the Company.

         2.2 "Code" means the Internal Revenue Code of 1986, as amended from
time to time, and the rules and regulations promulgated thereunder.

         2.3 "Incentive Stock Option" or "ISO" means a stock option which is
intended to qualify as an incentive stock option as defined in Section 422 of
the Code.

         2.4 "Non-Statutory Stock Option" or "NSO" means a stock option that is
not intended to, or does not, qualify as an incentive stock option as defined in
Section 422 of the Code.

         2.5 "Option" means, where required by the context of the Plan, an ISO
or NSO granted pursuant to the Plan.

         2.6 "Optionee" means a Participant in the Plan who has been granted one
or more Options under the Plan.

         2.7 "Participant" means an individual described in Section 5 of this
Plan who may be granted Options under the Plan.

         2.8 "Rule 16b-3" means Rule 16b-3 promulgated by the Securities and
Exchange Commission under the Securities Exchange Act of 1934.

         2.9 "Stock" means the par value, $.01 per share of the Company.

         2.10 "Subsidiary" means any corporation, other than the Company, in an
unbroken chain of corporations beginning with the Company if each of the
corporations other than the last corporation in the unbroken chain which at the
time the Option is granted owns 50% or more of the voting stock in one of the
other corporations in such chain.

3.       ADMINISTRATION

         3.1 The Plan shall be administered by the Board of Directors, which
shall have full power, subject to the provisions and restrictions of the Plan,
to grant Options, construe and interpret the Plan, establish rules and
regulations with respect to the Plan and Options granted hereunder, and perform
all other acts, including the

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delegation of administrative responsibilities, that it believes reasonable and
necessary.

         3.2 The Board of Directors shall have the sole discretion, subject to
the provisions of the Plan, to determine the Participants eligible to receive
Options pursuant to the Plan and the amount, type, and terms of any Options and
the terms and conditions of option agreements relating to any Option.

         3.3 The Board of Directors may correct any defect, supply any omission,
or reconcile any inconsistency in the Plan or in any Option granted hereunder in
the manner and to the extent it shall deem necessary to carry out the terms of
the Plan.

         3.4 Any decision made, or action taken, by the Board of Directors
arising out of or in connection with the interpretation and administration of
the Plan shall be final, conclusive and binding upon all Optionees.

4.       SHARES SUBJECT TO THE PLAN

         4.1 NUMBER. The total number of shares of Stock reserved for issuance
upon exercise of Options under the Plan is 371,000. Such shares shall consist of
authorized but unissued Stock. If any Option granted under the Plan lapses or
terminates for any reason before being completely exercised, the shares covered
by the unexercised portion of such Option may again be made subject to Options
under the Plan.

         4.2 CHANGES IN CAPITALIZATION. In the event of any change in the
outstanding shares of Stock of the Company by reason of any stock dividend,
split, recapitalization, reorganization, merger, consolidation, combination,
exchange of shares, or rights offering to purchase stock at a price
substantially below fair market value, or other similar corporate change, the
aggregate number of shares which may be subject to Options under the Plan and
the terms of any outstanding Option, including the number and kind of shares
subject to such Options and the purchase price per share thereof, shall be
appropriately adjusted by the Board of Directors, consistent with such change
and in such manner as the Board of Directors, in its sole discretion, may deem
equitable to prevent substantial dilution or enlargement of the rights granted
to or available for Optionees. Notwithstanding the preceding sentence, in no
event shall any fraction of a share of Stock be issued upon the exercise of an
Option.

5.       ELIGIBLE PARTICIPANTS

         The following persons are Participants eligible to participate in the
Plan:

         5.1 INCENTIVE STOCK OPTIONS. Incentive Stock Options may be granted
only to employees of the Company or any Subsidiary, including officers and
directors who are also employees of the Company or any Subsidiary.

         5.2 NON-STATUTORY STOCK OPTIONS. Non-statutory stock options may be
granted to (i) any employee of the Company or any Subsidiary, including any
officer or director who is also an employee of the Company or any Subsidiary;
and (ii) any consultant to, or other independent contractor of, the Company.

6.       GRANT OF OPTIONS

         6.1 DISCRETIONARY GRANTS. Subject to the terms, conditions, and
limitations set forth in this Plan, the Company, by action of the Board of
Directors, may from time to time grant Options to purchase shares of the
Company's Stock to those eligible Participants as may be selected by the Board
of Directors, in such amounts and on such other terms as the Board of Directors
in its sole discretion shall determine. Any grant of Options to officers who are
subject to Section 16 of the Securities Exchange Act of 1934, as amended, shall
be made only by a committee of two or more directors, each of whom is a
"disinterested person" as defined in Section 16b-3(c)(2) of the Exchange Act
cited above.

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         6.2 LIMITATIONS. Options specified under Section 6.1 above may be (i)
"Incentive Stock Options" so designated by the Board of Directors and which,
when granted, are intended to qualify as incentive stock options as defined in
Section 422 of the Code; (ii) "Non-Statutory Stock Options" so designated by the
Board of Directors and which, when granted, are not intended to, or do not,
qualify as incentive stock options under Section 422 of the Code; or (iii) a
combination of both. The date on which the Board of Directors approves the
granting of an Option shall be the date of grant of such Option, unless a
different date is specified by the Board of Directors on such date of approval.
Notwithstanding the foregoing, with respect to the grant of any Incentive Stock
Option under the Plan, the aggregate fair market value of Stock (determined as
of the date the Option is granted) with respect to which Incentive Stock Options
are exercisable for the first time by an Optionee in any calendar year (under
all such stock option plans of the Company or Subsidiaries) shall not exceed
$100,000. Each grant of an Option under the Plan shall be evidenced by a written
stock option agreement between the Company and the Optionee setting forth the
terms and conditions, not inconsistent with the Plan, under which the Option so
granted may be exercised pursuant to the Plan and containing such other terms
with respect to the Option as the Board of Directors in its sole discretion may
determine.

7.       OPTION PRICE AND FORM OF PAYMENT

         7.1 OPTION PRICE AND FORM OF PAYMENT. The purchase price for a share of
Stock subject to an Incentive Stock Option granted hereunder shall not be less
than 100% of the fair market value of the Stock. The purchase price for a share
of Stock subject to a Nonstatutory Stock Option granted hereunder shall be
determined by the Board of Directors at the time of such grant. For purposes of
this Section 7.1, the "fair market value" of the Stock shall be determined as
follows:

                  7.1.1 If the Stock of the Company is listed or admitted to
         unlisted trading privileges on a national securities exchange, the fair
         market value on any given day shall be the closing sale price for the
         Stock, or if no sale is made on such day, the closing bid price for
         such day on such exchange;

                  7.1.2 If the Stock is not listed or admitted to unlisted
         trading privileges on a national securities exchange, the fair market
         value on any given day shall be the closing sale price for the Stock as
         reported on the NASDAQ National Market System on such day, or if no
         sale is made on such day, the closing bid price for such day as entered
         by a market maker for the Stock;

                  7.1.3 If the Stock is not listed on a national securities
         exchange, is not admitted to unlisted trading privileges on any such
         exchange, and is not eligible for inclusion in the NASDAQ National
         Market System, the fair market value on any given day shall be the
         average of the closing representative bid and asked prices as reported
         on the NASDAQ System, and if not reported on such system, then as
         reported by the National Quotation Bureau, Inc. or such other publicly
         available compilation of the bid and asked prices of the Stock in any
         over-the-counter market on which the Stock is traded; or

                  7.1.4 If there exists no public trading market for the Stock,
         the fair market value on any given day shall be an amount determined in
         good faith by the Board of Directors in such manner as it may
         reasonably determine in its discretion, provided that such amount shall
         not be less than the book value per share as reasonably determined by
         the Board of Directors as of the date of determination or less than the
         par value of the Stock.

         Notwithstanding the foregoing, in the case of an Incentive Stock Option
granted to any Optionee then owning more than 10% of the voting power of all
classes of the Company's stock, the purchase price per share of the Stock
subject to such

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Option shall not be less than 110% of the fair market value of the Stock on the
date of grant of the Incentive Stock Option, determined as provided above.

         Except as provided herein, the purchase price of each share of Stock
purchased upon the exercise of any Option shall be paid:

                  7.1.5 In United States dollars in cash or by check, bank draft
         or money order payable to the order of the Company; or

                  7.1.6 At the discretion of the Board of Directors, through the
         delivery of shares of Stock, having initially or as a result of
         successive exchanges of shares, an aggregate fair market value (as
         determined in the manner provided under this Plan) equal to the
         aggregate purchase price for the Stock as to which the Option is being
         exercised; or

                  7.1.7 At the discretion of the Board of Directors, by a
         combination of both 7.1.5 and 7.1.6 above; or

                  7.1.8 By such other method as may be permitted in the written
         stock option agreement between the Company and the Optionee.

         If such form of payment is permitted, the Board of Directors shall
determine procedures for tendering Stock as payment upon exercise of an Option
and may impose such additional limitations and prohibitions on the use of Stock
as payment upon the exercise of an Option as it deems appropriate.

         If the Board in its sole discretion so agrees, the Company may finance
the amount payable by an Optionee upon exercise of any Option upon such terms
and conditions as the Board may determine at the time such Option is granted
under this Plan.

         7.2 WITHHOLDING TAXES. The Company shall have the right to require that
payment or provision for payment of any and all withholding taxes due upon the
grant or exercise of an Option hereunder or the disposition of any Stock or
other property acquired upon exercise of an Option be made by an Optionee. In
connection therewith, the Board shall have the right to establish such rules and
regulations or impose such terms and conditions in any agreement relating to an
Option granted hereunder with respect to such withholding as the Board may deem
necessary and appropriate.

8.       EXERCISE OF OPTIONS

         8.1 MANNER OF EXERCISE. An Option, or any portion thereof, shall be
exercised by delivering a written notice of exercise to the Company and paying
to the Company the full purchase price of the Stock to be acquired upon the
exercise of the Option. Until certificates for the Stock acquired upon the
exercise of an Option are issued to an Optionee, such Optionee shall not have
any rights as a shareholder of the Company with respect to such Stock.

         8.2 LIMITATIONS AND CONDITIONS ON EXERCISE OF OPTIONS. In addition to
any other limitations or conditions contained in this Plan or that may be
imposed by the Board of Directors from time to time or in the stock option
agreement to be entered into with respect to Options granted hereunder, the
following limitations and conditions shall apply to the exercise of Options
granted under this Plan:

                  8.2.1 No Incentive Stock Option may be exercisable by its
         terms after the expiration of 10 years from the date of the grant
         thereof.

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                  8.2.2 No Incentive Stock Option granted pursuant to the Plan
         to an eligible Participant then owning more than 10% of the voting
         power of all classes of the Company's stock may be exercisable by its
         terms after the expiration of five years from the date of the grant
         thereof.

                  8.2.3 To the extent required to comply with Rule 16b-3, Stock
         acquired upon exercise of an Option granted under to the Plan may not
         be sold or otherwise disposed of for a period of six months from the
         date of grant of the Option.

9.       INVESTMENT PURPOSES

         Unless a registration statement under the Securities Act of 1933 is in
effect with respect to Stock to be purchased upon exercise of Options to be
granted under the Plan, the Company shall require that an Optionee agree with
and represent to the Company in writing that he or she is acquiring such shares
of Stock for the purpose of investment and with no present intention to
transfer, sell or otherwise dispose of such shares of Stock other than by
transfers which may occur by will or by the laws of descent and distribution,
and no shares of Stock may be transferred unless, in the opinion of counsel to
the Company, such transfer would be in compliance with applicable securities
laws. In addition, unless a registration statement under the Securities Act of
1933 is in effect with respect to the Stock to be purchased under the Plan, each
certificate representing any shares of Stock issued to an Optionee hereunder
shall have endorsed thereon a legend in substantially the following form:

         THE SECURITIES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD,
         TRANSFERRED, ASSIGNED OR HYPOTHECATED UNLESS THERE IS AN EFFECTIVE
         REGISTRATION STATEMENT UNDER SUCH ACT COVERING SUCH SECURITIES, THE
         SALE IS MADE IN ACCORDANCE WITH RULE 144 UNDER THE ACT, OR THE
         CORPORATION RECEIVES AN OPINION OF COUNSEL FOR THE HOLDER OF THESE
         SECURITIES REASONABLY SATISFACTORY TO THE CORPORATION STATING THAT SUCH
         SALE, TRANSFER, ASSIGNMENT OR HYPOTHECATION IS EXEMPT FROM THE
         REGISTRATION AND PROSPECTUS DELIVERY REQUIREMENTS OF SUCH ACT.

10.      TRANSFERABILITY OF OPTIONS

         No Option granted under the Plan shall be transferable by an Optionee
(whether by sale, assignment, hypothecation or otherwise) other than by will or
the laws of descent and distribution or pursuant to a qualified domestic
relations order as defined under the Code or Title I of the Employee Retirement
Income Security Act, or the rules thereunder. An Option shall be exercisable
during the Optionee's lifetime only by the Optionee or, if permissible under
applicable law, by the Optionee's guardian or legal representative.

11.      TERMINATION OF OPTIONS

         11.1 GENERALLY. Except as otherwise provided in this Section 11, if an
Optionee's employment with the Company or Subsidiary is terminated (hereinafter
"Termination"), the Optionee may exercise any Option granted under the Plan, to
the extent the Optionee was vested in and entitled to exercise the Option at the
date of Termination, for a period of three months after the date of Termination
or until the term of the Option has expired, whichever date is earlier.

         11.2 DEATH OR DISABILITY OF OPTIONEE. In the event of the death or
Disability of an Optionee prior to expiration of an Option held by him or her,
the following provisions shall apply:

                  11.2.1 If the Optionee is at the time of his or her Disability
         employed by the Company or a Subsidiary and has been in continuous

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         employment (as determined by the Board of Directors in its sole
         discretion) since the date of grant of the Option, then the Option
         shall be immediately exercisable in full and the Optionee shall be 100%
         vested on the date of Optionee's Disability; provided, however, that
         such Option must be exercised within one year of the date of the
         Optionee's Disability, and in no event later than the date of
         expiration of the Option. The term "Disability" shall mean any physical
         or mental impairment of Optionee, whether total or partial, which
         prevents Optionee, in the reasonable judgment of the Company, from
         carrying out or performing the major duties of his or her association
         with the Company. The determination of whether an Optionee has a
         Disability within the meaning of this Section 11.2.1 shall be made in
         writing by the Board of Directors in its sole discretion.

                  11.2.2 If the Optionee is at the time of his or her death
         employed by the Company or a Subsidiary and has been in continuous
         employment (as determined by the Board of Directors in its sole
         discretion) since the date of grant of the Option, then the Option
         shall be immediately exercisable in full by the Optionee's estate or by
         a person who acquired the right to exercise the Option by will or the
         laws of descent and distribution, and the Optionee shall be 100% vested
         on the date of Optionee's Death; provided, however, that such Option
         must be exercised within two years of the date of the Optionee's Death,
         and in no event later than the date of expiration of the Option.

         11.3 TERMINATION OF EMPLOYMENT. The Board of Directors shall have the
right to cancel any Options granted to the Optionee under the Plan if the
employment of an Optionee is terminated by the Company or a Subsidiary.

12.      AMENDMENT AND TERMINATION OF PLAN

         12.1 The Board of Directors, may at any time and from time to time
suspend or terminate the Plan in whole or in part or amend it from time to time
in such respects as may be in the best interests of the Company; provided,
however, that no such amendment shall be made without the approval of the
shareholders if it would: (a) materially modify the eligibility requirements for
Participants as set forth in Section 5 hereof; (b) increase the maximum
aggregate number of shares of Stock which may be issued pursuant to Options,
except in accordance with Section 4.2 hereof; (c) reduce the minimum Option
price per share as set forth in Section 7 hereof, except in accordance with
Section 4.2 hereof; (d) extend the period of granting Options; or (e) materially
increase in any other way the benefits accruing to Optionees.

         12.2 No amendment, suspension or termination of this Plan shall,
without the Optionee's consent, alter or impair any of the rights or obligations
under any Option theretofore granted to him or her under the Plan.

         12.3 The Board of Directors may amend the Plan, subject to the
limitations cited above, in such manner as it deems necessary to permit the
granting of Incentive Stock Options meeting the requirements of future
amendments to the Code.

         12.4 In the event of the proposed dissolution or liquidation of the
Company, each Option will terminate immediately prior to the consummation of
such proposed action, unless otherwise provided by the Board of Directors. The
Board of Directors may, in the exercise of its sole discretion in such instance,
declare that any Option shall terminate as of a date fixed by the Board of
Directors and give each Optionee the right to exercise his or her Option as to
all or any part of the Option, including Stock as to which the Option would not
otherwise be exercisable. In the event of a proposed sale of all or
substantially all of the assets of the Company, or the merger of the Company
with or into another corporation, the Option shall be assumed or an equivalent
option shall be substituted by such successor corporation or a parent or
subsidiary of such successor corporation, unless the Board of Directors
determines, in the exercise of its sole discretion and in lieu of such
assumption or substitution, that the Optionee shall have the right to exercise
the Option in full including Stock

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as to which the Option would not otherwise be exercisable. If the Board of
Directors makes an Option fully exercisable in lieu of assumption or
substitution in the event of a merger or sale of assets, the Board of Directors
shall notify the Optionee that the Option shall be fully exercisable for a
period of thirty (30) days from the date of such notice, and the Option will
terminate upon the expiration of such period.

13.      MISCELLANEOUS PROVISIONS

         13.1 NO RIGHT TO CONTINUED EMPLOYMENT. No person shall have any claim
or right to be granted an Option under the Plan, and the grant of an Option
under the Plan shall not be construed as giving an Optionee the right to
continued employment with the Company. The Company further expressly reserves
the right at any time to dismiss an Optionee or reduce an Optionee's
compensation with or without cause, free from any liability, or any claim under
the Plan, except as provided herein or in a stock option agreement.

         13.2 TRANSFER OF STOCK AND PAYMENT OF WITHHOLDING TAXES. The Company
shall have the right to require that payment or provision for payment of any and
all withholding taxes due upon the grant or exercise of an Option hereunder or
the disposition of any Stock or other property acquired upon exercise of an
Option be made by an Optionee. The Board of Directors shall have the right to
establish such other rules and regulations or impose such other terms and
conditions in any agreement relating to an Option granted hereunder with respect
to tax withholding as the Board of Directors may deem necessary and appropriate.

         13.3 GOVERNING LAW. The Plan shall be administered in the State of
Minnesota, and the validity, construction, interpretation, and administration of
the Plan and all rights relating to the Plan shall be determined solely in
accordance with the laws of such state, unless controlled by applicable federal
law, if any.

14.      EFFECTIVE DATE

         The effective date of the Plan is September 17, 1996. No Option may be
granted after ten (10) years; provided, however, that all outstanding Options
shall remain in effect until such outstanding Options have expired or been
canceled.

         IN WITNESS WHEREOF, of the adoption of this Stock Option Plan, the
Company has caused its President to execute this Plan on the 17th day of
September, 1996.

                                        MERCURY WASTE SOLUTIONS, INC.

                                        By: /s/ Mark G. Edlund
                                           -------------------------------------
                                         Its: President

                                       7Exhibit 10.3
                         CHARLIE BULL ROYALTY AGREEMENT
                                LICENSE AGREEMENT

         THIS AGREEMENT, entered into this 1st day of Jan. , 2002, by and
between Charlie Bull (hereinafter "Licensor") and DENTAL RESOURCES, INC., a
Minnesota corporation (hereinafter "Licensee").

         WHEREAS, Licensor is willing to license it's rights in formula
properties he has developed to the Licensee on the terms contained herein.

         WHEREAS, Licensee desires to organize a production facility and
marketing program to execute and create a market and demand for these formulas,
and is accordingly interested in producing and selling these products under this
license.

         NOW THEREFORE, for valuable consideration and upon the mutual promises
and covenants contained herein, the parties to this License Agreement agree as
follows:

         1.       The products licensed in this Agreement include the formulas
                  manufactured, sold or used by the Licensee that are associated
                  with licensor's products; and the licensed know how covered by
                  this Agreement includes all factual knowledge, technological
                  information, trade secrets, FDA reporting requirements,
                  formulas, source of ingredients, and complete procedure for
                  production of products , and other data related to the
                  manufacture, marketing and use of these formulas.

         2.       The "license royalty" to be paid under this Agreement is a fee
                  paid to the Licensor (or its successor in interest) by the
                  Licensee for total wholesale sales of licensed products that
                  the Licensor has the right to manufacture, use and sell under
                  the terms of this Agreement. For purposes of determining the
                  license royalty, each "year" shall be measured in respect to
                  the annual date on which this Agreement is effective.

         3.       License Grant - For indefinite time commencing on the date of
                  this Agreement, the Licensor hereby indefinitely grants to the
                  Licensee a license to produce, use and sell the products
                  covered by this License Agreement. The products included in
                  this agreement are:

                           a)       An In-Office Fluoride Rinse Kit consisting
                                    of two parts---1 a APF part and one a
                                    Stannous part.
                           b)       In In-Office Acidulated Phosphate Fluoride
                                    in various flavors.
                           c)       A Home Care Stannous Gel at 0.4%.
                           d)       A Home Care Stannous Concentrate at 0.63%
                           e)       A Neutral 1.1% Sodium fluoride gel.
                           f)       A Neutral Concentrated Sodium Fluoride
                                    rinse.
                           g)       A Remineralization gel now called Revive.
                           h)       A Desensitization gel now called DS-8
                           i)       A Prophy paste in various flavors.

         4.       Cooperation of Licensor - Licensor agrees to cooperate fully
                  and to use its reasonable efforts, in providing any reasonable
                  assistance to Licensee in solving any technical problems
                  arising in connection with the production, use and
                  installation of the Licensed formulas. This will include
                  giving the Licensee the formulas, the ingredients, the source
                  of these ingredients, and the complete procedure on how to
                  manufacture the products agreed upon. Licensor will also
                  assist Licensee as necessary with certain training sessions to
                  be agreed to by the parties hereto as the need arises,
                  provided that Licensee shall pay Licensor for any
                  out-of-pocket expenses incurred by them incident to assisting
                  with such training or assisting with solving technical
                  problems, plus give a $300/day consulting fee whenever the
                  Licensor needs to travel to the Licensee. Licensor will also
                  be available to answers questions by phone, fax or other
                  methods if necessary at no additional costs.

<PAGE>

         5.       Royalties - Licensee shall make the following royalty payments
                  to Licensor consisting of cash payments:

                  A cash license will be paid to the Licensor for a six year
                  period starting on the date of this signed agreement.

                  A cash license royalty of Licensed Product sold or other
                  disposition of or used by Licensee which shall be equal to 3%
                  of total wholesale sales. Such cash royalty payments shall be
                  made quarterly during each year of this Agreement, and payment
                  shall be made to Licensor by Licensee within 30 days of the
                  end of each quarter. Quarters will be the fiscal quarters of
                  the Licensee. Licensee shall not be required to pay cash
                  royalties on free samples or defective materials.

                  If Licensee is unable to manufactured said products and needs
                  to return to the original manufacture, then royalties will no
                  longer be paid and this agreement will be void.

         6.       Business Records: Licensee hereby agrees to keep business
                  records showing the manufacture and sale or other disposition
                  of the Licensed Products in sufficient detail to enable the
                  License Royalty to be accurately and fairly determined, and
                  further agrees to permit its books and records to be examined
                  from time to time, during normal business hours and with
                  reasonable notice, to the extent necessary for Licensor to
                  verify that Licensee is complying with the requirements and
                  obligations of this Agreement. If material omissions or errors
                  are discovered incident to any such verification examinations,
                  Licensee shall be responsible for all costs of such
                  examinations by Licensor or its accounting representative.

         7.       Marketing - The Licensee will use its best efforts to
                  diligently promote and market the Licensed Products herein,
                  and Licensee shall not make any warranties, representations or
                  claims regarding the Licensed Products without the approval of
                  Licensor. Any governmental approval needed to market the
                  Licensed Products in any federal, state, or local governmental
                  area shall be obtained by Licensee at its expense. The
                  Licensee assumes all risks and liabilities arising out of any
                  warranty, guaranty, or other representation made by Licensee
                  in the marketing or promotion of the Licensed Products; and
                  Licensee will indemnify and hold harmless Licensor in respect
                  to any lawsuit, claim or proceeding arising out of any such
                  warranty, guaranty or representation of Licensee in the sale
                  or promotion of the Licensed Products, or arising out of the
                  use of the Licensed Product by anyone derived from sales
                  thereof made by Licensee or arising out of the operation of
                  this agreement and product liability thereon and any damages
                  and expenses.

         8.       Transfer of Rights - All license rights under this Agreement
                  shall be binding upon any successor in interest of the
                  Licensor. The Licensee shall have the right to sublicense or
                  assign the license rights, but this agreement would still be
                  in effect and royalties would have to be paid by the Licensee.

         9.       General Matters -

                  a.       Notices: All notices provided for herein shall be
                           given in writing and hand delivered or sent by
                           certified mail, directed as follows:

                                    To Licensor:  Mr. Charlie Bull
                                                  #11 Oak Creek
                                                  Osage Beach, MO. 65065

                                    To Licensee:  Dental Resources, Inc. -
                                                   c/o Douglas Murphy
                                                  530 South River Street
                                                  Delano, MN 55328

                  b.       Parties In Interest: This Agreement shall inure to
                           the benefits of and bind the parties hereto, and
                           their respective successors and assigns as the case
                           may be.
                  c.       Governing Law: The Agreement shall be construed and
                           enforced in accordance with the laws of the State of
                           Minnesota.

<PAGE>

                  d.       Severability: If any part of this Agreement is deemed
                           to be unenforceable for any reason, the balance of
                           the Agreement shall remain in full force and effect.
                  e.       Relationship of Parties: The relationship between the
                           parties hereto is strictly that of Licensor and
                           Licensee, and the Licensee shall have no right to
                           bind or in any way obligate the Licensor in respect
                           to any contract or understanding with another party.
                  f.       Entire Agreement: this Agreement contains the entire
                           agreement between the parties hereto and supersedes
                           all previous understandings, negotiations and
                           commitments between the parties hereto in respect to
                           the subject matter of this Agreement; and this
                           Agreement may not be released, discharged, abandoned,
                           changed or modified in any manner except by a written
                           instrument duly executed by each party hereto.

         10.      The parties agree that all information of Licensor transferred
                  to Licensee under this agreement and designated confidential
                  shall be kept in strict confidence and not disclosed or used
                  except for the purposes of this agreement and only disclosed
                  to us individuals who have a need to know and who agree to
                  such confidentiality

         IN WITNESS WHEREOF, the parties hereto have duly executed this License
Agreement as hereinafter appearing.

Mr. Charlie Bull                            DENTAL RESOURCES, INC.

By                                          By
   -----------------------------               -----------------------------
                                                      President

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00043-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00043-of-00352.parquet"}]]