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FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

f4cix110121hcs.txt



Exhibit 99 - Additional Information



     NL Industries, Inc. ("NL"), Harold C. Simmons and his wife, Annette C.

Simmons and Kronos worldwide, Inc. ("Kronos") are the direct holders of 31.8%,

14.7%, 1.1%, and 0.1%, respectively, of the outstanding shares of class A

common stock, par value $0.01 per share (the "Class A Common Stock"), of the

issuer.



     NL directly holds 100%, or 10,000,000 shares, of the issuer's Class B

Common Stock, par value $0.01 per share (the "Class B Common Stock," and

collectively with the Class A Common Stock, the "Common Stock").  The

description of the relative rights of the Common Stock contained in the

issuer's restated certificate of incorporation is hereby incorporated herein by

reference to Exhibit 3.1 of the issuers Registration Statement on Form S-1

(File No. 333-42643).  As a result of its ownership of its shares of Class A

Common Stock and all of the Class B Common Stock, NL currently holds

approximately 86.9% of the combined voting power (98.4% for the election of

directors) of all classes of voting stock of the issuer.



     Valhi, Inc. ("Valhi"),Harold C. Simmons, Annette C. Simmons, TIMET

Finance Management Company ("TFMC") and Kronos are the direct holders of 83.0%,

2.1%, 0.6%, 0.5% and less than 0.1%, respectively, of the outstanding common

stock of NL.  Valhi Holding Company ("VHC"), TFMC, the Harold Simmons

Foundation, Inc. (the "Foundation"), the Contran Amended and Restated Deferred

Compensation Trust (the "CDCT"), Harold C. Simmons, Annette C. Simmons, The

Combined Master Retirement Trust (the "CMRT"), Kronos, The Annette Simmons

Grandchildren's Trust (the "Grandchildren's Trust") and Contran Corporation

("Contran") are the direct holders of 92.4%, 1.3%, 0.9%, 0.3%, 0.3%, 0.2%,

0.1%, less than 0.1% and less than 0.1%, respectively, of the common stock of

Valhi.  Dixie Rice Agricultural Corporation, Inc. ("Dixie Rice") is the direct

holder of 100% of the outstanding common stock of VHC.  Contran is the holder of

100% of the outstanding common stock of Dixie Rice.



 Valhi, NL, Harold C. Simmons, TFMC, Annette C. Simmons and Contran are

the direct holders of approximately 50.0%, 30.4%, 0.4%, 0.1%, 0.1% and less

than 0.1%, respectively, of the outstanding common stock of Kronos.



     Substantially all of Contran's outstanding voting stock is held by trusts

established for the benefit of certain children and grandchildren of Harold C.

Simmons (the "Trusts"), of which Mr. Simmons is the sole trustee, or is held by

Mr.  Simmons or persons or other entities related to Mr.  Simmons.  As sole

trustee of the Trusts, Mr. Simmons has the power to vote and direct the

disposition of the shares of Contran stock held by the Trusts.  Mr. Simmons,

however, disclaims beneficial ownership of any shares of Contran stock that the

Trusts hold.



     The Foundation directly holds approximately 0.9% of the outstanding shares

of Valhi common stock.  The Foundation is a tax-exempt foundation organized for

charitable purposes.  Harold C.  Simmons is the chairman of the board of the

Foundation.



     The CDCT directly holds approximately 0.3% of the outstanding shares of

Valhi common stock.  U.S. Bank National Association serves as the trustee of

the CDCT.  Contran established the CDCT as an irrevocable "rabbi trust" to

assist Contran in meeting certain deferred compensation obligations that it

owes to Harold C. Simmons.  If the CDCT assets are insufficient to satisfy such

obligations, Contran is obligated to satisfy the balance of such obligations as

they come due.  Pursuant to the terms of the CDCT, Contran (i) retains the

power to vote the shares of Valhi's common stock held directly by the CDCT,

(ii) retains dispositive power over such shares and (iii) may be deemed the

indirect beneficial owner of such shares.



     The CMRT directly holds approximately 0.1% of the outstanding shares of

Valhi common stock.  Contran sponsors the CMRT, which permits the collective

investment by master trusts that maintain the assets of certain employee

benefit plans Contran and related companies adopt.  Mr. Simmons is the sole

trustee of the CMRT and a member of the trust investment committee for the

CMRT.  Mr. Simmons is a participant in one or more of the employee benefit

plans that invest through the CMRT.



     NL, a subsidiary of NL and Kronos directly own 3,604,790 shares,

1,186,200 shares and 184,773 shares, respectively, of Valhi common stock.  As

already discussed, Valhi is the direct holder of approximately 83.0% of the

outstanding common stock of NL and 50% of the outstanding common stock of

Kronos. Pursuant to Delaware law, Valhi treats the shares of Valhi common stock

that NL, the subsidiary of NL and Kronos own as treasury stock for voting

purposes and for the purposes of this statement such shares are not deemed

outstanding.



     Mr. Harold C. Simmons is chairman of the board of Kronos, Valhi, VHC,

Dixie Rice and Contran and chairman of the board and chief executive officer of

NL.



     By virtue of the holding of the offices, the stock ownership and his

service as trustee, all as described above, (a) Mr. Simmons may be deemed to

control the entities described above and (b) Mr. Simmons and certain of such

entities may be deemed to possess indirect beneficial ownership of the shares

of Class A or Class B Common Stock that are directly held by NL.  However, Mr.

Simmons disclaims such beneficial ownership of the shares of Class A or Class B

Common Stock beneficially owned directly by NL.



     Annette C. Simmons is the direct owner of 26,400 shares of Class A Common

Stock, 54,856 shares of Kronos common stock, 292,225 shares of NL common stock

and 219,796 shares of Valhi common stock.  Mr. Simmons may be deemed to share

indirect beneficial ownership of such securities.  Mr. Simmons disclaims

beneficial ownership of all securities that his wife holds directly.



     Mr. Harold C. Simmons is the direct owner of 349,330 shares of Class A

Common Stock, 258,720 shares of Kronos common stock, 1,009,145 shares of NL

common stock and 343,183 shares of Valhi common stock.



     The Grandchildren's Trust, of which Harold C. Simmons and his wife are

trustees and the beneficiaries are the grandchildren of his wife, is the direct

holder of 31,800 shares of the common stock of Valhi.  Mr. Simmons, as co-

trustee of this trust, has the power to vote and direct the disposition of the

shares of Valhi common stock the trust holds.  Mr. Simmons disclaims beneficial

ownership of any shares that this trust holds.



     TFMC is the direct holder of 0.1% of the outstanding shares of common stock

of Kronos, 0.5% of the outstanding shares of common stock of NL and 1.3% of the

outstanding shares of common stock of Valhi.  Titanium Metals Corporation

("TIMET") is the direct holder of 100% of the outstanding shares of common stock

of TFMC.  VHC, Annette C. Simmons, the CMRT, Harold C. Simmons, Kronos, NL,

Valhi, Contran, the Foundation and the Grandchildren's Trust are the holders of

approximately 24.9%, 12.1%, 8.6%, 3.1%, 1.6% 0.8%, 0.5%, 0.4%, less than 0.1%

and less than 0.1%, respectively, of the outstanding shares of common stock

of TIMET. NL's percentage ownership of TIMET common stock includes 0.3% directly

held by a subsidiary of NL.  Harold C. Simmons is the chairman of the board of

TIMET.