POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and
appoints each of J. Mark Hollingsworth, A. Andrew R. Louis and Sandra K.
Meyers signing singly, his/her true and lawful attorney-in-fact to:

(1) execute for and on behalf of the undersigned Forms 3, 4 and 5 in
accordance with Section 16(a) of the Securities Exchange Act of 1934, as
amended (the "Act"), and the rules thereunder;

(2) do and perform any and all acts for and on behalf of the undersigned
that may be necessary or desirable to complete the execution of any such
Forms 3, 4 or 5 and the timely filing of such form with the United States
Securities and Exchange Commission and any other authority; and

(3) take any other action of any type whatsoever in connection with the
foregoing that in the opinion of such attorney-in-fact may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of
the undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney-in-fact may approve
in his/her discretion.

The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform all and every act and thing whatsoever
requisite, necessary and proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
such attorney-in-fact might or could do if personally present, with full
power of substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact, or his/her substitute or substitutes, shall lawfully
do or cause to be done by virtue of this Power of Attorney and the rights and
powers herein granted.  The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving such capacity at the request of the
undersigned, are not assuming any of the undersigned's responsibilities to
comply with Section 16 of the Act.

EXECUTED as of this 4th day of October 2002.



/s/ Glenn R. Simmons
Signature


Glenn R. Simmons
Printed Name