POWER OF ATTORNEY

FOR EXECUTING FORMS 3, 4 AND 5



      Know all by these presents, that the undersigned hereby constitutes and

appoints each of J. Mark Hollingsworth, Robert D. Graham, and A. Andrew R.

Louis and Andrew B. Nace, 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 any 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 the

undersigned 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 such attorney-in-fact's 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.



      This power of attorney shall remain in full force and effect until the

undersigned is no longer required to file forms 3, 4 or 5 unless earlier

revoked by the undersigned in a signed writing delivered to the foregoing

attorneys-in-fact.



EXECUTED as of this 25th day of February 2005.



  /s/ John A. St. Wrba Signature





     John A. St. Wrba Printed Name