EXHIBIT 3.25

                                                           STATE OF DELAWARE
                                                          SECRETARY OF STATE
                                                       DIVISION OF CORPORATIONS
                                                       FILED 03:00 PM 12/30/2002
                                                          020806882 - 3608784

                          CERTIFICATE OF INCORPORATION

                                       OF

                            BLACK WALNUT COAL COMPANY

                                      *****

1. The name of the corporation is: BLACK WALNUT COAL COMPANY

2. The address of its registered office in the State of Delaware is Corporation
Trust Center, 1209 Orange Street, in the City of Wilmington, County of New
Castle. The name of its registered agent at such address is The Corporation
Trust Company.

3. The nature of the business or purposes to be conducted or promoted is:

         To engage in any lawful act or activity for which corporations may be
organized under the General Corporation Law of Delaware.

4. The total number of shares of stock which the corporation shall have
authority to issue is: One Hundred (100) and the par value of each of such
shares is: Ten Dollars ($10.00) amounting in the aggregate to One Thousand
Dollars ($1,000.00).

5. The name and mailing address of each incorporator is as follow:



     NAME                   MAILING ADDRESS
     ----                   ---------------
                        
JOSEPH W. BEAN             701 Market Street
                           St. Louis, MO 63101


6. The corporation is to have perpetual existence.

7. In furtherance and not in limitation of the powers conferred by statute, the
board of directors is expressly authorized:

         To make, alter or repeal the by-laws of the corporation.


         To authorize and cause to be executed mortgages and liens upon the real
and personal property of the corporation.

         To set apart out of any of the funds of the corporation available for
dividends a reserve or reserves for any proper purpose and to abolish any such
reserve in the manner in which it was created.

         To designate one or more committees, each committee to consist of one
or more of the directors of the corporation. The board may designate one or more
directors as alternate members of any committee, who may replace any absent or
disqualified member at any meeting of the committee. The by-laws may provide
that in the absence or disqualification of a member of a committee, the member
or members present at any meeting and not disqualified from voting, whether or
not such member or members constitute a quorum, may unanimously appoint another
member of the board of directors to act at the meeting in the place of any such
absent or disqualified member. Any such committee, to the extent provided in the
resolution of the board of directors, or in the by-laws of the corporation,
shall have and may exercise all the powers and authority of the board of
directors in the management of the business and affairs of the corporation, and
may authorize the seal of the corporation to be affixed to all papers which may
require it; but no such committee shall have the power or authority in reference
to the following matters: (i) approving or adopting, or recommending to the
stockholders, any action or matter expressly required by the Delaware General
Corporation Law to be submitted to stockholders for



approval or (ii) adopting, amending or repealing any bylaw of the corporation.

         When and as authorized by the stockholders in accordance with law, to
sell lease or exchange all or substantially all of the property and assets of
the corporation, including its good will and its corporate franchises, upon such
terms and conditions and for such consideration, which may consist in whole or
in part of money or property including shares of stock in, and/or other
securities of, any other corporation or corporations, as its board of directors
shall deem expedient and for the best interests of the corporation.

         8.       Elections of directors need not be by written ballot unless
the by-laws of the corporation shall provide.

         9.       The corporation reserves the right to amend, alter, change or
repeal any provision contained in this Certificate of Incorporation, in the
manner now or hereafter prescribed by statute, and all rights conferred upon
stockholders herein are granted subject to this reservation.

         10.      A director of the corporation shall not be personally liable
to the corporation or its stockholders for monetary damages for breach of
fiduciary duty as a director except for liability (i) for any breach of the
director's duty of loyalty to the corporation or its stockholders, (ii) for acts
or omissions not in good faith or which involve intentional misconduct or a
knowing violation of law, (iii) under Section 174 of the Delaware General
Corporation Law, or (iv) for any transaction from which the director derived any
improper personal benefit.

         I, THE UNDERSIGNED, being the incorporator hereinbefore named, for the
purpose of forming a corporation pursuant to the General



Corporation Law of the State of Delaware, do make this Certificate, hereby
declaring and certifying that this is my act and deed and the facts herein
stated are true, and accordingly have hereunto set our hands this 23rd day of
December, 2002.

                                                            /s/ JOSEPH W. BEAN
                                                            --------------------
                                                                JOSEPH W. BEAN