Tronox Incorporated Class B Common Stock to Begin Trading March 16 on NYSE as "TRX.B"

Oklahoma City, March 15, 2006 - Tronox Incorporated today announced it has been notified that Tronox Incorporated Class B common stock will begin trading on the New York Stock Exchange (NYSE) under the ticker symbol "TRX.B" on a "when issued" basis on March 16. TRX.B will begin regular trading on March 31. Tronox's Class A common stock will continue to trade on the NYSE under the symbol "TRX."

The holders of TRX and TRX.B have identical rights, except that holders of Class A common stock are entitled to one vote per share, while holders of Class B common stock are entitled to six votes per share on all matters to be voted on by shareholders.

On March 8, Kerr-McGee Corp. (NYSE: KMG) announced it would distribute its remaining equity interest in Tronox (approximately 22.9 million shares of Tronox Class B common stock) to Kerr-McGee stockholders by means of a share dividend on March 30. Kerr-McGee expects to distribute approximately .20 of a share of TRX.B for each outstanding share of Kerr-McGee stock owned by its stockholders on the record date of March 20, with the final distribution ratio to be set on the record date.

"As Tronox becomes a stand-alone company, we will continue to execute our strategic plan, which is focused on increasing cash flow, profits and returns," said Tom Adams, Tronox Incorporated chief executive officer. "We expect to add value for our shareholders by extracting more from our existing assets through operational excellence; driving our business from the customers' perspective through end-use market segmentation; and continuing a disciplined approach to our financial priorities of free cash flow generation, debt reduction and returning value to shareholders.

"With our value strategy, assets located in major global markets, long-term customers, and talented and dedicated employees, I am confident that we will capture future opportunities in the markets in which we compete," said Adams.

An information statement describing the distribution will be mailed to Kerr-McGee stockholders following the record date. Details on the distribution and the information statement will be posted on Kerr-McGee's website at www.kerr-mcgee.com.

Headquartered in Oklahoma City, Tronox is the world's third-largest producer and marketer of titanium dioxide pigment, with an annual production capacity of 624,000 tonnes. Titanium dioxide pigment is an inorganic white pigment used in paint, coatings, plastics, paper and many other everyday products. The company's five pigment plants, which are located in the United States, Australia, Germany and the Netherlands, supply high-performance products to more than 1,100 customers in approximately 100 countries. In addition, Tronox produces electrolytic products, including sodium chlorate, electrolytic manganese dioxide, boron trichloride, elemental boron and lithium manganese oxide. For information on Tronox, visit www.tronox.com.

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Forward-Looking Statements: Statements in this news release regarding the company's or management's intentions, beliefs or expectations, or that otherwise speak to future events, are "forward-looking statements" within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements include those statements preceded by, followed by or that otherwise include the words "believes," "will," "expects," "anticipates," "intends," "estimates," "projects," "target," "budget," "goal," "plans," "objective," "outlook," "should," or similar words. Future results and developments discussed in these statements may be affected by numerous factors and risks, such as the accuracy of the assumptions that underlie the statements, the market value of Tronox's products, demand for consumer products for which Tronox's businesses supply raw materials, the financial resources of competitors, changes in laws and regulations, the ability to respond to challenges in international markets, including changes in currency exchange rates, political or economic conditions in areas where Tronox operates, trade and regulatory matters, general economic conditions, and other factors and risks identified in Tronox's registration statement on Form S-1, as filed with the U.S. Securities and Exchange Commission on June 6, 2005, and as last amended on Nov. 21, 2005. Actual results and developments may differ materially from those expressed or implied in this news release. The company does not undertake to update forward-looking statements to reflect the impact of circumstances or events that arise after the date the forward-looking statement was made.

Media Contact:Debbie Schramm
Direct: 405-775-5177
Mobile: 405-830-6937
E-mail: debbie.schramm@tronox.com
Investor Contact:Robert Gibney
Direct: 405-775-5105
E-mail: robert.gibney@tronox.com