FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public
Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

SIMMONS HAROLD C 		2. Issuer Name and Ticker or Trading Symbol

NL INDUSTRIES INC [ NL ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      __ X __ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Chairman of the Board and CEO
(Last)          (First)          (Middle)

5430 LBJ FREEWAY, SUITE 1700 		3. Date of Earliest Transaction (MM/DD/YYYY)

12/14/2010
(Street)

DALLAS, TX 75240
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common stock $0.125 par value   12/14/2010     J (1)    39   A $11.2899   39   I   by Kronos   (2)
Common stock $0.125 par value   12/14/2010     J (1)    961   A $11.29   1000   I   by Kronos   (2)
Common stock $0.125 par value   12/14/2010     J (1)    1000   A $11.30   2000   I   by Kronos   (2)
Common stock $0.125 par value                  40387531   I   by Valhi   (3)
Common stock $0.125 par value                  222100   I   by TFMC   (4)
Common stock $0.125 par value                  1007145   D  
 
Common stock $0.125 par value                  292225   I   by Spouse   (5)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Explanation of Responses:
( 1)  Opern market purchase by Kronos Worldwide, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship among the persons joining in this filing.
( 2)  Directly held by Kronos Worldwide, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship among the persons joining in this filing.
( 3)  Directly held by Valhi, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationships among the persons joining in this filing.
( 4)  Directly held by TIMET Finance Management Company. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationships among the persons joining in this filing.
( 5)  Directly held by the reporting person's spouse. Mr. Simmons disclaims beneficial ownership of any shares of the issuer's common stock that his spouse holds.

Remarks:
Exhibit Index
Exhibit 99 - Additional Information

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
SIMMONS HAROLD C
5430 LBJ FREEWAY, SUITE 1700
DALLAS, TX 75240 		X X Chairman of the Board and CEO
CONTRAN CORP
5430 LBJ FREEWAY, SUITE 1700
DALLAS, TX 75240
X

DIXIE RICE AGRICULTURE CORP INC
5430 LBJ FREEWAY, SUITE 1700
DALLAS, TX 75240
X

VALHI HOLDING CO
5430 LBJ FREEWAY, SUITE 1700
DALLAS, TX 75240
X

VALHI INC /DE/
5430 LBJ FREEWAY, SUITE 1700
DALLAS, TX 75240
X

KRONOS WORLDWIDE INC
5430 LBJ FREEWAY, SUITE 1700
DALLAS, TX 75240
X

TITANIUM METALS CORP
5430 LBJ FREEWAY, SUITE 1700
DALLAS, TX 75240
X

TIMET FINANCE MANAGEMENT CO
5430 LBJ FREEWAY, SUITE 1700
DALLAS, TX 75240
X


Signatures
A. Andrew R. Louis, Secretary, for Contran Corporation 12/16/2010
** Signature of Reporting Person Date

A. Andrew R. Louis, Attorney-in-fact, for Harold C. Simmons 12/16/2010
** Signature of Reporting Person Date

A. Andrew R. Louis, Secretary, for Dixie Rice Agricultural Corporation, Inc. 12/16/2010
** Signature of Reporting Person Date

A. Andrew R. Louis, Secretary, for Valhi Holding Company 12/16/2010
** Signature of Reporting Person Date

A. Andrew R. Louis, Secretary, for Valhi, Inc. 12/16/2010
** Signature of Reporting Person Date

A. Andrew R. Louis, Secretary, for Kronos Worldwide, Inc. 12/16/2010
** Signature of Reporting Person Date

A. Andrew R. Louis, Assistant Secretary, for Titanium Metals Corporation 12/16/2010
** Signature of Reporting Person Date

Gregory M. Swalwell, Vice President, for TIMET Finance Management Company 12/16/2010
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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