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Exhibit 99 Additional Information-





       Contran Corporation ("Contran") and Annette C. Simmons are the

direct holders of 90.3% and 0.1%, respectively, of the outstanding shares

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



       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 held by Mr. Simmons or persons or other entities related to

Mr. Simmons.  As sole trustee of each of the Trusts, Mr. Simmons has the

power to vote and direct the disposition of the shares of Contran stock

held by each of the Trusts.  Mr. Simmons, however, disclaims beneficial

ownership of any shares of Contran stock that the Trusts hold.



       Mr. Harold C. Simmons is chairman of the board of Contran.



       By virtue of the holding of the office and the stock ownership and

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

to control Contran and the issuer and (b) Mr. Simmons may be deemed to

possess indirect beneficial ownership of the shares of the Common Stock

directly held by Contran.  However, Mr. Simmons disclaims beneficial

ownership of the shares of Common Stock beneficially owned by Contran.



       Annette C. Simmons is the wife of Harold C. Simmons and is the

direct holder of 13,457 shares of Common Stock.  Mr. Simmons may be

deemed to share indirect beneficial ownership of such shares.  Mr.

Simmons disclaims beneficial ownership of all shares that his wife holds

directly.  Mrs. Simmons disclaims beneficial ownership of all shares that

she does not hold directly.