EXHIBIT 4.1.2

                                                               CONFORMED COPY

                    AMENDMENT NO. 2 TO RIGHTS AGREEMENT

                                    THIS AMENDMENT NO. 2 (the  "Amendment")
                           dated  as of  April  27,  2005,  to  the  Rights
                           Agreement,  dated as of May 16, 1996 (as amended
                           by  Amendment  No. 1 dated as of March 18, 2004,
                           the "Rights Agreement"), between Ashland Inc., a
                           Kentucky   corporation  (the   "Company"),   and
                           National City Bank, a Delaware  corporation,  as
                           successor  to Harris  Trust and Savings  Bank by
                           appointment,   as  Rights   Agent  (the  "Rights
                           Agent").  Terms used  herein  and not  otherwise
                           defined  shall  have  the  respective   meanings
                           ascribed to such terms in the Rights Agreement.

                  WHEREAS  the  Company,  ATB  Holdings  Inc.,  a  Delaware
corporation ("HoldCo"), EXM LLC, a Kentucky limited liability company ("New
Ashland LLC"), New EXM Inc., a Kentucky  corporation  ("New Ashland Inc."),
Marathon Oil Corporation, a Delaware corporation ("Marathon"), Marathon Oil
Company, an Ohio corporation ("Marathon Company"), Marathon Domestic LLC, a
Delaware  limited  liability  company  ("Merger Sub"), and Marathon Ashland
Petroleum LLC, a Delaware limited liability company ("MAP"), entered into a
Master  Agreement  on March 18,  2004 and  Amendment  No. 1 to this  Rights
Agreement on March 18, 2004;

                  WHEREAS the parties to the Master  Agreement  dated as of
March 18,  2004 have  proposed  to enter into an  amendment  to that Master
Agreement  to be dated  the  date  hereof  (that  Master  Agreement,  as so
amended, being referred to herein as the "Master Agreement");

                  WHEREAS the Company desires to amend the Rights Agreement
to render the Rights  inapplicable to the  Transactions  (as defined in the
Master  Agreement)  contemplated  by the  Master  Agreement  and the  other
Transaction Agreements (as defined in the Master Agreement);

                  WHEREAS  the  Company  desires  that,  at the  Conversion
Merger Effective Time (as defined in the Master Agreement), (A) New Ashland
Inc.  will succeed to all the rights and  obligations  of the Company under
the Rights Agreement; (B) all references to Common Stock of the Company and
Preferred  Shares of the Company will be deemed to be  references to Common
Stock of New Ashland Inc. and Preferred Shares of New Ashland Inc.; and (C)
the Rights Agreement will continue in effect;

                  WHEREAS the Company  deems this  Amendment  to the Rights
Agreement to be desirable  and in the best  interests of the holders of the
Rights and has duly approved this Amendment; and

                  WHEREAS  Section 26 of the Rights  Agreement  permits the
Company at any time before the occurrence of a Distribution Date and before
any person becomes an Acquiring Person to amend the Rights Agreement in the
manner provided herein.

                  NOW THEREFORE, the parties hereby agree as follows:

1. Succession and Continuance. Effective at the Conversion Merger Effective
Time,  New Ashland Inc. will succeed to all the rights and  obligations  of
the  Company  under the  Rights  Agreement  and the Rights  Agreement  will
continue in effect after the Conversion Merger Effective Time.

2.  Substitution  of New Ashland Inc.  Effective at the  Conversion  Merger
Effective Time, all references to Common Stock of the Company and Preferred
Shares  of the  Company  in the  Rights  Agreement  will  be  deemed  to be
references to Common Stock of New Ashland Inc. and Preferred  Shares of New
Ashland Inc.

3. References to Master  Agreement.  All references in the Rights Agreement
to the "Master  Agreement"  shall be deemed to be  references to the Master
Agreement dated as of March 18, 2004 among the parties thereto,  as amended
by  Amendment  No. 1 thereto  dated as of April 27,  2005 among the parties
thereto.

4.  Effectiveness.  This Amendment shall be deemed effective as of the date
first written above, as if executed on such date. Except as amended hereby,
the  Rights  Agreement  shall  remain in full force and effect and shall be
otherwise unaffected hereby.

5.   Miscellaneous.   This  Amendment  may  be  executed  in  one  or  more
counterparts,  all of which shall be considered  one and the same agreement
and shall  become  effective  immediately  upon  execution  by the Company,
whether or not also executed by the Rights Agent.  This Amendment  shall be
deemed to be a contract made under the laws of the Commonwealth of Kentucky
and for all purposes shall be governed by and construed in accordance  with
the laws of such State  applicable  to contracts  to be made and  performed
entirely within such State. If any term, provision, covenant or restriction
of this  Amendment  is held by a court of competent  jurisdiction  or other
authority to be invalid, void or unenforceable, the remainder of the terms,
provisions,  covenants and  restrictions  of this Amendment shall remain in
full  force  and  effect  and  shall  in no way be  affected,  impaired  or
invalidated.  The  Rights  Agent and the  Company  hereby  waive any notice
requirement under the Rights Agreement pertaining to the matters covered by
this Amendment.






                  IN WITNESS  WHEREOF,  the parties hereto have caused this
Amendment to be executed and delivered by their  authorized  officers as of
the date first written above.



                          ASHLAND INC.,

                          by /s/ James J. O'Brien
                          ------------------------
                          Name: James J. O'Brien
                          Title: Chief Executive Officer



                          National City Bank,

                          by
                          ------------------------
                          Name:
                          Title: