NL Industries : NL REPORTS FIRST QUARTER OF 2013 RESULTS

           NL Industries : NL REPORTS FIRST QUARTER OF 2013 RESULTS

DALLAS, TEXAS - May 8, 2013 - NL Industries, Inc. (NYSE:NL) today reported a
loss from continuing operations attributable to NL stockholders of $2.1
million, or $.04 per share, in the first quarter of 2013 compared to income
from continuing operations attributable to NL stockholders of $20.5 million,
or $.42 per share, in the first quarter of 2012.

Net sales increased 5% in the first quarter of 2013 compared to the same
period of 2012 primarily due to an increase in market demand within both of
CompX's security products and marine components businesses. Income from
continuing operations attributable to CompX decreased to $1.4 million in the
first quarter of 2013 compared to $1.6 million in the first quarter of 2012,
primarily due to higher self-insured medical expenses in 2013, partially
offset by the contribution from higher sales.

Kronos' net sales of $463.6 million in the first quarter of 2013 were $97.7
million, or 17%, lower than in the first quarter of 2012 primarily due to
lower average TiO[2 ]selling prices, partially offset by slightly higher sales
volumes. Kronos' average TiO[2] selling prices were 21% lower in the first
quarter of 2013 as compared to the first quarter of 2012, and average selling
prices at the end of the first quarter of 2013 were 7% lower than at the end
of 2012. Kronos' TiO[2] sales volumes for the first quarter of 2013 increased
1% as compared to the first quarter of 2012 due to increased customer demand
in export markets offset in part by slightly lower demand in North American
and European markets. Kronos' sales volumes in the first quarter of 2013 set
a new record for a first quarter. Fluctuations in currency exchange rates
increased Kronos' net sales by approximately $1 million as compared to the
first quarter of 2012. The table at the end of this press release shows how
each of these items impacted Kronos' overall change in sales.

Kronos' income (loss) from operations decreased $256.3 million from income of
$209.4 million in the first quarter of 2012 to a loss of $46.9 million in the
first quarter of 2013 primarily due to the negative effects of lower selling
prices, lower production volumes and higher raw materials costs. Kronos' cost
of sales per metric ton of TiO[2 ]sold in the first quarter of 2013 was
significantly higher than TiO[2 ]sold in the first quarter of 2012, as a
substantial portion of the TiO[2] products Kronos sold in the first quarter of
2012 was produced with lower-cost feedstock ore purchased in 2011, while a
substantial portion of the TiO[2] products Kronos sold in the first quarter of
2013 was produced with higher-cost feedstock ore purchased in 2012. Kronos'
TiO[2] production volumes were 13% lower in the first quarter of 2013 as
compared to the first quarter of 2012. Fluctuations in currency exchange
rates decreased Kronos' income from operations by approximately $6 million in
the first quarter of 2013 compared to the first quarter of 2012.

Kronos recognized an aggregate $6.6 million pre-tax charge (NL's equity
interest was $.9 million, or $.02 per share, net of income taxes) consisting
of the write-off of unamortized original issue discount and deferred financing
costs related to the voluntary prepayment of $290 million of its term loan.

Insurance recoveries reflect, in part, amounts we received from certain of our
former insurance carriers and relate to the recovery of prior lead pigment and
asbestos litigation defense costs incurred by us. Insurance recoveries
aggregated $.6 million (or $.01 per share, net of income taxes) in the first
quarter of 2013 compared to $1.1 million (or $.02 per share, net of income
taxes) for the same period in 2012.

Corporate expenses were lower in the first quarter of 2013 compared to the
first quarter of 2012 primarily due to lower environmental remediation and
related costs in 2013.

The statements in this release relating to matters that are not historical
facts are forward-looking statements that represent management's beliefs and
assumptions based on currently available information. Although NL believes
that the expectations reflected in such forward-looking statements are
reasonable, we cannot give any assurances that these expectations will prove
to be correct. Such statements by their nature involve substantial risks and
uncertainties that could significantly impact expected results, and actual
future results could differ materially from those described in such
forward-looking statements. While it is not possible to identify all factors,
we continue to face many risks and uncertainties. Among the factors that
could cause actual future results to differ materially include, but are not
limited to:

  oFuture supply and demand for our products
  oThe extent of the dependence of certain of our businesses on certain
    market sectors
  oThe cyclicality of our businesses (such as Kronos' TiO[2 ]operations)
  oCustomer and producer inventory levels
  oUnexpected or earlier-than-expected industry capacity expansion (such as
    the TiO[2 ]industry)
  oChanges in raw material and other operating costs (such as energy, ore,
    zinc and brass costs) and our ability to pass those costs on to our
    customers or offset them with reductions in other operating costs
  oChanges in the availability of raw material (such as ore)
  oGeneral global economic and political conditions (such as changes in the
    level of gross domestic product in various regions of the world and the
    impact of such changes on demand for, among other things, TiO[2 ]and
    component products)
  oCompetitive pricing, products and substitute products
  oCustomer and competitor strategies
  oUncertainties associated with the development of new product features
  oPotential consolidation of Kronos' competitors
  oPotential consolidation of Kronos' customers
  oThe impact of pricing and production decisions
  oCompetitive technology positions
  oPotential difficulties in integrating future acquisitions
  oPotential difficulties in upgrading or implementing new manufacturing and
    accounting software systems
  oThe introduction of trade barriers
  oPossible disruption of Kronos' or CompX's business, or increases in our
    cost of doing business resulting from terrorist activities or global
    conflicts
  oThe impact of current or future government regulations (including employee
    healthcare benefit related regulations
  oFluctuations in currency exchange rates (such as changes in the exchange
    rate between the U.S. dollar and each of the euro, the Norwegian krone and
    the Canadian dollar), or possible disruptions to our business resulting
    from potential instability resulting from uncertainties associated with
    the euro
  oOperating interruptions (including, but not limited to, labor disputes,
    leaks, natural disasters, fires, explosions, unscheduled or unplanned
    downtime, transportation interruptions and cyber attacks)
  oDecisions to sell operating assets other than in the ordinary course of
    business
  oCompX's and Kronos' ability to renew or refinance debt
  oOur ability to maintain sufficient liquidity
  oThe timing and amounts of insurance recoveries
  oThe extent to which our subsidiaries or affiliates were to become unable
    to pay us dividends
  oThe ultimate outcome of income tax audits, tax settlement initiatives or
    other tax matters
  oUncertainties associated with the development of new product features
  oOur ability to utilize income tax attributes or changes in income tax
    rates related to such attributes, the benefits of which have been
    recognized under the more-likely-than-not recognition criteria
  oEnvironmental matters (such as those requiring compliance with emission
    and discharge standards for existing and new facilities or new
    developments regarding environmental remediation at sites related to our
    former operations)
  oGovernment laws and regulations and possible changes therein (such as
    changes in government regulations which might impose various obligations
    on present and former manufacturers of lead pigment and lead-based paint,
    including us, with respect to asserted health concerns associated with the
    use of such products)
  oThe ultimate resolution of pending litigation (such as our lead pigment
    and environmental matters)
  oPossible future litigation.

Should one or more of these risks materialize (or the consequences of such a
development worsen), or should the underlying assumptions prove incorrect,
actual results could differ materially from those currently forecasted or
expected. We disclaim any intention or obligation to update or revise any
forward-looking statement whether as a result of changes in information,
future events or otherwise.

NL Industries, Inc. is  engaged in the  component products (security  products 
and performance marine components), chemicals (TiO[2]) and other businesses.

NL INDUSTRIES, INC.                                            
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS                
(In millions, except earnings per share)                       
(Unaudited)                                                    
                                                     Three months ended
                                                          March 31,
                                                    2012           2013
                                                         (Unaudited)
                                                              
Net sales                                        $ 20.4     $ 21.4
Cost of sales                                     14.4     15.4
                                                              
 Gross margin                                 6.0     6.0
                                                              
Selling, general and administrative expense       4.4     4.6
Other operating income (expense):                              
 Insurance recoveries                         1.1     .6
 Other income, net                            .2    -
 Corporate expense                            (16.4)     (4.9)
                                                              
 Loss from operations                    (13.5)     (2.9)
                                                              
Equity in earnings (loss) of Kronos Worldwide,    41.6     (12.5)
Inc.
                                                              
General corporate items:                                       
 Interest and dividends                       .7    .7
 Interest expense                             (.3)   -
                                                              
 Income (loss) from continuing
operations                                        28.5     (14.7)
 before income taxes
                                                              
Income tax expense (benefit)                      8.0     (12.7)
                                                              
 Income (loss) from continuing operations       20.5     (2.0)
 Income from discontinued operations, net of    .7    -
tax
                                                              
Net income (loss)                                 21.2     (2.0)
                                                              
 Noncontrolling interest in net income of       .2    .1
subsidiary
                                                              
Net income (loss) attributable to NL             $ 21.0     $ (2.1)
stockholders
                                                              

NL INDUSTRIES, INC.                                            
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (CONTINUED)      
(In millions, except earnings per share)                       
(Unaudited)                                                    
                                                      Three months ended
                                                          March 31,
                                                     2012          2013
                                                         (Unaudited)
                                                              
Amounts attributable to NL stockholders:                       
                                                              
 Income (loss) from continuing operations       $ 20.5    $ (2.1)
 Income from discontinued operations             .5   -
 Net income (loss) attributable to NL         $ 21.0    $ (2.1)
stockholders
                                                              
 Net income (loss) per share:                                
 Continuing operations                          $ .42   $ (.04)
 Discontinued operations                         .01    -
 Net income (loss) per share                $ .43   $ (.04)
                                                              
Basic and diluted weighted average shares             48.7          48.7
outstanding
                                                              

NL INDUSTRIES, INC.                    
COMPONENTS OF LOSS FROM OPERATIONS      
(In millions)                          
(Unaudited)                            
                                      
                              Three months ended
                                  March 31,
                             2012          2013
                                      
CompX - component products $ 1.6    $ 1.4
Insurance recoveries        1.1   .6
Other income, net           .2  -
Corporate expense           (16.4)     (4.9)
                                      
 Loss from operations $ (13.5)    $ (2.9)
                                      

NL INDUSTRIES, INC.                         
CHANGE IN KRONOS' TiO[2] SALES              
(Unaudited)                                 
                                           
                              Three months ended
                                  March 31,
                                2013 vs. 2012
                                           
Percentage change in sales:                 
 TiO[2] product pricing            (21) %
 TiO[2] sales volume                  1 %
 TiO[2] product mix                   3 %
                                           
 Total                     (17) %
                                           

Source: NL Industries, Inc.

Contact: Gregory M. Swalwell, Vice President, Finance and Chief Financial
Officer, 972-233-1700

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