( BW)(ARCELORMITTAL)(MT.LU)(MT.AS)(MTBL.Y)(MTP.PA)(MT) ArcelorMittal Announces Launch of Offer for ArcelorMittal Inox Brasil S.A. (previously named Acesita S.A.)

Not for Distribution in Canada, Japan or Australia

LUXEMBOURG--(BUSINESS WIRE)--March 5, 2008--Regulatory News:

ArcelorMittal today launches the previously announced delisting tender offer for all of the outstanding shares in Mittal Inox Brasil S.A. (previously named Acesita S.A.) (the "Company"), pursuant to the tender offer registration granted by the Comissao de Valores Mobiliarios (the "CVM"), the Brazilian securities regulator, on March 3, 2008, pursuant to article 157, paragraph 4 of Law n. 6,404/76, and to Rule n. 358/02 of the Brazilian Securities Commission ("CVM"). The Offer will remain open for 30 calendar days from this date and will be settled through an auction at the Sao Paulo Stock Exchange ("Bovespa") on April 4, 2008. As previously announced, this transaction will result in ArcelorMittal acquiring the 43% outstanding shares in the Company it does not currently own.

The price offered by ArcelorMittal is R$ 100.00 per common share and R$ 100.00 per preferred share of the Company. This price will be adjusted to subtract the dividends and interest on equity declared by the Company from December 4th, 2007 through to the business day prior to the auction date. As of the date hereof, this value corresponds to R$98.33 per common share and R$98.17 per preferred share, subject to adjustment by the Referential Rate - TR plus 6% per year, starting February 28th, 2008 through to the auction date. At today's exchange rate, this transaction represents a cash disbursement of up to around USD 1.85bn.

As of today, a group of shareholders led by Tarpon Investments, which owns 157,300 common shares and 7,914,147 preferred shares, and BNDESPAR, which owns 12.707.827 preferred shares of the Company, have irrevocably committed to ArcelorMittal to sell their shares of ArcelorMittal Inox Brasil in the Offer.

Further information regarding the Offer is included in the final tender offer notice and related documentation, available on the following websites:

ArcelorMittal Inox Brasil S.A. (www.acesita.com.br)

Banco Santander Banespa S.A. (www.santanderbanespa.com.br/prospectos)

Comissao de Valores Mobiliarios (www.cvm.gov.br)

Important Information

This document does not constitute an offer to acquire Company securities in any jurisdiction.

Any offer that may be made will be made to all holders of shares of the Company located in . In addition, holders of shares of the Company located outside of Brazil may participate in the offer on the condition that such holders are permitted to do so under the laws and regulations of the jurisdiction in which they are located.

No copy of this document has been or should be distributed or sent to Canada, Japan or Australia.

About ArcelorMittal

ArcelorMittal is the world's largest and most global company, with 310,000 employees in more than 60 countries. The company brings together the world's number one and number two steel companies, Arcelor and Mittal Steel.

ArcelorMittal is the leader in all major global markets, including automotive, construction, household appliances and packaging, with leading R&D and technology, as well as sizeable captive supplies of raw materials and outstanding distribution networks. An industrial presence in 28 European, Asian, African and American countries exposes the company to all the key steel markets, from emerging to mature, positions it will be looking to develop in the high-growth Chinese and Indian markets.

ArcelorMittal key pro forma financials for 2007 show revenues of USD 105.2 billion, with a crude steel production of 116 million tonnes, representing around 10 per cent of world steel output.

ArcelorMittal is listed on the stock exchanges of New York (MT), Amsterdam (MT), Paris (MTP), Brussels (MTBL), (MT) and on the Spanish stock exchanges of Barcelona, Bilbao, Madrid and Valencia (MTS).

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CONTACT: ArcelorMittal Investor Relations Europe, +352 4792 2414 Americas, +1 312 899 3569 Retail, +352 4792 2434 SRI, +44 203 214 2854 Bonds/Credit, +33 1 71 92 10 26 or ArcelorMittal Communications E-mail: [email protected] Phone: +352 4792 5000 or ArcelorMittal Corporate Communications Nicola Davidson, +44 207 543 1162 / 1172 Jean Lasar, +352 4792 2359 or Maitland Consultancy: Lydia Pretzlik / Martin Leeburn, +44 20 7379 5151 or Belgium Charles-Hubert Gernaert, Comfi, +32 2 290 90 90 or North America Bill Steers, +1 312 899 3817 or Smink, Van der Ploeg & Jongsma Leon Melens, +31 20 647 81 81 or Germany Herring Schuppener Phoebe Kebbel, +49 69 92 18 74 77 or France Image 7 Anne France Malrieu, +33 1 5370 7470 Tiphaine Hecketsweiler, +33 1 5370 7470 or Ignacio Agreda, +34 94 489 4162 Oscar Fleites, +34 98 512 60 29 Keith Grant, +34 639 760 397