Exhibit 10(n)

Amendment No. 1 to Purchase and Contribution Agreement made this 30th day of
June 2004, (the "Amendment"), by and among American Business Corporation f/k/a
Logistics Management Resources, Inc., a publicly owned Colorado corporation with
offices at 477 Madison Avenue, 12th Floor, New York, NY 10022 ("AMBC"), Y2
Ultra-Filter, Inc., a Wyoming corporation with offices at 1735 Sheridan Ave,
Suite 222, Cody, Wyoming 82414 ("Y2"), Midwest Merger Management, LLC, a
Kentucky limited liability company with offices at 10602 Timberwood Circle, #9,
Louisville, Kentucky 40223 ("MMM"), and The Huff Grandchildren Trust, a trust
organized under the laws of the State of Kentucky with offices at 10602
Timberwood Circle, #9, Louisville, Kentucky 40223 (the "Trust"). AMBC, MMM, the
Trust and Y2 are sometimes hereinafter individually referred to as a "Party" and
collectively as the "Parties".

                         W  I  T  N  E  S  S  E  T  H:

WHEREAS, AMBC and Y2 are the parties to a Purchase and Contribution Agreement
dated as if April 28, 2004 (the "Agreement"); and

WHEREAS, the Parties desire to amend the Agreement to include the terms and
conditions set forth in this Amendment.

NOW, THEREFORE, in consideration of the foregoing recitals, and the other good
and valuable consideration hereinafter set forth, the receipt and adequacy of
which are hereby acknowledged and accepted, the Parties agree as follows:


     1.     Amendment to Title and Whereas Clauses.  The title of the Agreement
is hereby changed from Purchase and Contribution Agreement to License and Joint
Venture Agreement. The Whereas clauses are hereby amended to read in their
entirety as follows:

            "WHEREAS, Y2 is the owner of the entire right, title, and interest
            in patented filtration system technology known as U2-Ultra Filter
            (the "Technology") including all trademarks, trade names, trade
            secrets, copyrights and all other rights appurtenant or relating
            thereto (the "Intellectual Property"); and

            WHEREAS, AMBC desires to secure the exclusive worldwide licensing
            rights to market and sell all of Y2's filters employing and
            embodying the Technology when utilized in the gaming industry (the
            "Licensed Products"); and thereafter establish a Delaware limited
            liability company (the "LLC") as a joint venture with Y2 to
            commercialize the Licensed Products on the terms and subject to the
            conditions hereinafter set forth; and

            WHEREAS,  Y2 is willing to exclusively license the Licensed Products
            to AMBC and participate as a 50% member of the LLC on the terms and
            subject to the conditions hereinafter set forth; and

            WHEREAS, MMM is willing to grant a preferred stock call option to Y2
            on the terms and subject to the conditions hereinafter set forth;
            and

            WHEREAS, the Trust is willing to indemnify Y2 on the term and
            subject to the conditions hereinafter set forth."


     2.     Amendment to Article I of the Agreement.  Article I of the Agreement
is hereby amended to read in its entirety as follows:

                                  "ARTICLE I
                           TERMS OF THE TRANSACTION

            1.1     Transfer of Rights. During the term of this Agreement, Y2
     hereby grants to AMBC and AMBC hereby accepts the exclusive and non-
     transferable worldwide right and license (the "Rights") to market,
     distribute and sell the Licensed Products to licensed gaming facilities
     (the "Market") under any and all circumstances or through any means
     whatsoever. It is agreed and understood that the transfer of the Rights to
     AMBC is exclusive, and Y2 will not, during the term of this Agreement,
     authorize any other person, firm or entity to market, distribute or sell
     the Licensed Product into the Market. The Rights to the Licensed Products
     are covered in Y2 patent numbers 5,368,635 as filed with the United States
     Patent and Trademark Office ("USPTO"), and issued by the USPTO November 29,
     1994; patent 5,540,761 issued by the USPTO July 30, 1996; patent 5,647,890
     issued by the USPTO July 15,1997; and patent 5,855,653 issued by the USPTO
     January 5, 1999.  The foregoing are hereinafter collectively referred to as
     the "Patents".

            1.2     Term and Termination.  This Agreement shall be deemed to be
     effective as of the date of its execution and shall continue in full force
     and effect for the life of the Technology, unless sooner terminated as
     hereinafter set forth.  Either Party may terminate this Agreement if the
     other Party shall default in the performance of any of its duties or
     obligations hereunder, and if, after written notice of the specific default
     is given to the defaulting Party, such default is not remedied within
     thirty (30) days after receipt of the notice by the defaulting Party.

            1.3     Consideration for the Rights.  At the closing of the
     transfer of the Rights (the "Closing"), and in consideration therefore,
     AMBC shall:

            A.  Shares. Cause its transfer agent to originally issue and
            delivery to Y2   Twenty-Seven Million (27,000,000) shares of AMBC's
            common stock, $.001 par value per share (the "Initial Share
            Consideration");

            B.  First Option. Cause the original issuance and delivery to Y2 of
            a certificate representing a 66 month option (the "First Option") to
            purchase Nineteen Million and eight  (19,000,008) shares of AMBC's
            common stock, $.001 par value per share (the "First Option Shares")
            at an exercise price of $.10 per First Option Share (the "First
            Option Exercise Price").  The First Option Exercise Price has been
            arbitrarily determined as approximately the average closing price of
            AMBC's common stock in the OTC Bulletin Board Market during the
            period of negotiations between the Parties, which price the Parties
            hereby deem fair and reasonable.  The First Option shall be
            exercisable at the rate of 791,667 First Option Shares for each
            $1,000,000 in annualized sales of the Licensed Product generated by
            the LLC.  The First Option Shares will vest upon the completion of
            each 12 month period commencing July 1, 2004 through June 30, 2009,
            based on the annual sales of the LLC  during that prior 12 month
            period. Vesting is determined at the rate of 791,667 First Option
            shares for each million in revenue up to a maximum of 19,000,008
            First Option shares.

            C.  Second Option.    Cause the issuance and delivery to Y2 of a
            certificate representing a 66 month option (the "Second Option") to
            purchase an additional Twenty Million (20,000,000) shares of AMBC's
            common stock, $.001 par value per share (the "Second Option
            Shares"). The  exercise price will be equal to the average closing
            price of AMBC's common stock in the OTC Bulletin Board Market for
            the last three trading days of the applicable calendar quarter (the
            "Second Option Exercise Price") prior to issuance.  The Second
            Option shall be vested and exercisable at the rate of 1,000,000
            Second Option Shares for each $1,000,000 in annualized net sales of
            the Licensed Product in excess of $24,000,000 generated by the LLC.
            The Second Option will be issued once the LLC annualized sales have
            reached $24,000,000 in annualized sales. The Second Option Shares
            shall also vest upon the completion of each 12 month period ending
            June 30th through 2009 based on the annual sales of the LLC (at the
            rate of 1,000,000 Second Option Shares for each $1,000,000 in
            annualized sales of LLC) in excess of $24,000,000;

            D.   Grant of Call Option.  By virtue of its execution of this
            Agreement, as an inducement to Y2 to enter into this Agreement and
            only in the event the annualized net sales of the LLC shall equal or
            exceed $100,000,000 during any calendar quarter prior to the fifth
            anniversary of the Closing, MMM hereby grants to Y2 exclusive right,
            on written notice to MMM, to call a number of shares of AMBC's
            common stock equal to fifty percent (50%) of the number of issued
            and outstanding common stock equivalents of AMBC's preferred stock,
            $.001 par value per share, held by MMM, the Trust or any affiliate
            of either, at a price to be determined by an appraiser located
            within the State of Kentucky within sixty (60) days of the notice of
            Y2's call; and

            E.   Indemnification.  The Trust hereby agrees to indemnify and hold
            Y2 harmless from any and all liabilities of AMBC as exist or the
            date of Closing.

            1.4     Creation of the LLC.  As soon as possible, AMBC and Y2 shall
     cause the formation of the LLC under the name A.I.R. Filters, LLC.  AMBC
     and Y2 covenant and agree to co-operate with each other to prepare and
     execute an operating agreement for the LLC as soon as practicable. In the
     interim, the Parties agree that: (i) AMBC and Y2 shall be the LLC's only
     two members; (ii) Y2 shall be the sole operating manager; (iii) AMBC shall
     be the sole executive and administrative manager; (iii) Y2 shall be
     entitled to receive fifty percent (50%) of all profit before taxes (gross
     revenues less cost of goods sold and all ordinary and necessary expenses of
     marketing, distribution and administration) generated by the LLC, thirty
     (30) days after the end of each calendar quarter;  (iv) AMBC shall be
     entitled to the remaining 50%, and (v) Y2 will initially maintain exclusive
     operating responsibilities, and if removed from such, AMBC and Y2 will
     mutually agree on minimal licensed product sales, or AMBC will release Y2
     from the exclusive agreement pertaining to the licensed product for this
     target market."


     3.     Amendment to Article III of the Agreement.  Article III, Section 3.3
b. of the Agreement is hereby amended to correct two typographical errors so
that the Section, as of April 28, 2004, read in its entirety as follows:

            "b. Logistics has not issued any additional options or warrants to
  purchase shares of the Logistics' Common Stock, hereof, (i) there are
  currently 1,454,250 shares of Logistics preferred stock outstanding which are
  convertible into or exercisable or exchangeable for 81,331,425 shares of
  Logistics common stock, and (ii) there are no outstanding options, rights,
  Contracts, warrants, subscriptions, conversion rights or other agreements or
  commitments pursuant to which Logistics agreed to purchase, redeem, issue or
  sell any shares of capital stock or other securities of Logistics
  (collectively, "Convertibles").


     4.     Confirmation of the Agreement. Except as herein modified, the
Parties hereby reconfirm the validity and enforceability of the Agreement.


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


                                        Y2 Ultra-Filter, Inc.

                                        By: /s/ Ira Gentry
                                           ----------------------------------
                                                Ira Gentry, President


                                        American Business Corporation

                                        By: /s/ Anthony R. Russo
                                           ----------------------------------
                                                Anthony R. Russo, President


                                        The Huff Grandchildren Trust

                                        By: /s/ W. Anthony Huff
                                           ----------------------------------
                                                W. Anthony Huff, Trustee


                                        Midwest Merger Management, LLC

                                        By:/s/ Michele Brown
                                           ----------------------------------
                                               Michele Brown, Manager