EXHIBIT 3.51(a)


                          CERTIFICATE OF INCORPORATION

                                       OF

                                 CANNELTON INC.

     1.   The name of the corporation  is:

                                 Cannelton Inc.

     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 Thousand (1,000) and the par value of each of such
shares shall be One Hundred Dollars ($100) amounting in the aggregate to One
Hundred Thousand Dollars ($100,000.00).

     5.   The board of directors is authorized to make, alter or repeal the by-
laws of the corporation.  Election of directors need not be by written ballot.

     6.   To the fullest extent permitted by the General Corporation Law of the
State of Delaware, as the same exists or may hereafter be amended, a director of
the corporation shall not be liable to the corporation or its stockholders for
monetary damages for breach of fiduciary duty as director.  Any repeal or
modification of this Article shall not adversely affect any right or protection
of an existing director at the time of such repeal or modification.

     7.   The name and mailing address of the incorporator is:

                               Raymond. J. Cooke
                                   AMAX Inc.
                                200 Park Avenue
                                 33/rd/ Floor
                              New York, NY 10166

     I, THE UNDERSIGNED, being the incorporator hereinbefore named, for the
purpose of forming a corporation pursuant to the General Corporation Law of
Delaware, do make this certificate, thereby declaring and certifying that this
is my act and deed and the facts herein stated are true, and accordingly have
hereunto set my hand this 18/th/ day of November, 1991.

 
                    /s/ Raymond J. Cooke
                        Raymond J. Cooke