POWER OF ATTORNEY FOR EXECUTING FORMS 3 4 AND 5





 Know all by these present that the undersigned hereby constitutes

and appoints each of Andrew B. Nace, A. Andrew R. Louis, M. Paige Savage,

and Clarence B. Brown, 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 an 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 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 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 in 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 30th day of March, 2016.





/s/ Mary A. Tidlund Signature



Mary A. Tidlund Printed Name