|For immediate release
|---------------------

MITTAL STEEL COMPANY N.V. REPORTS SECOND QUARTER AND HALF YEAR RESULTS 2006

Rotterdam, August 2, 2006 - Mittal Steel Company N.V. (Mittal Steel or the Company), the worlds largest and most global steel company, today announced results for the three months ended
June 30, 2006.

- Excellent results, higher than guidance
- Operating income in Q206 up almost 50% from Q106
- EPS up 36% from Q106
- Operating income expected to increase by approximately 25% in Q306 on Q206levels

|(US dollars in millions except per share and shipment data) |         |         |        
|----------------------------------------------------------- | ------- | ------- | -------
|                                                           
|                                                            | 2Q 2006 | 1Q 2006 | 2Q 2005
|Shipments (000ST)                                          | 16,763  | 15,597  | 12,181 
|Sales                                                       | $9,230  | $8,430  | $7,604 
|Operating income                                            | 1,517   | 1,017   | 1,391  
|Net income                                                  | 1,015   | 743     | 1,090  
|Basic Earnings Per Share                                    | 1.44    | 1.06    | 1.57   

The results for 2005 include Mittal Steel USA ISG Inc. (ISG), formerly International Steel Group, from April 15, 2005 and the results of Mittal Steel Kryviy Rih, formerly Kryvorizhstal, from November 26,
2005. The results for 2006 include the results of certain Stelco subsidiaries (namely Norambar Inc. and Stelfil Ltée plants located in Quebec and the Stelwire Ltd. plant in Ontario), from February 1, 2006. As a result, prior period results
are not entirely comparable.

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Commenting, Lakshmi N Mittal, Chairman and CEO Mittal Steel Company, said:

We are delighted to report a very strong set of results for the second quarter, with operating income increasing some 49% compared with the first quarter. This improvement is due to improved market conditions in
all three of our main operating regions. As we anticipated in May, the recovery is now underway in Asia resulting into higher selling prices. Additionally, we have delivered a strong performance in Europe, particularly in the Ukraine where synergies
are now being delivered, and in America, where costs have been reduced.

Looking forward, we expect market conditions to continue to improve, driving further growth in shipments and operating income in the third quarter.

Meanwhile approximately 92% of Arcelors equity holders (on a fully diluted basis) have accepted our offer for the company and we are now focused on achieving a successful integration. The underlying
fundamentals for the industry in the long-term remain positive and we are very excited about the potential of the Company.







Page 2 of 24

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SECOND QUARTER 2006 EARNINGS ANALYST CONFERENCE CALL

Mittal Steel management and Arcelor management will host a combined conference call for members of the investment community to discuss the financial performance of Mittal Steel and Arcelor at 9:00 AM New York time /
2:00 PM London time / 3:00 PM CET on Wednesday, August 2, 2006. The conference call will include a brief question and answer session with senior management. The conference call information is as follows:

Date: Wednesday, August 2nd

Time: 9:00 am New York Time / 2:00 pm London Time / 3:00 pm CET

Dial-In Number from within the U.S.: +1 866 4327 186

Dial-In
    Number from within the U.K.:+44 207 0705 579

For individuals unable to participate in the conference call, a telephone replay will be available until September 1, 2006 at:

International Replay Number: + 44 208 196 1998

Access code 634819#

A web cast of the conference call can also be accessed viawww.mittalsteel.comand will be available for one week. Real
Player or Windows Media Player will be required in order to access the web cast.

SECOND QUARTER 2006 MEDIA CONFERENCE CALL

Additionally, Arcelor and Mittal Steel will host a joint conference call for media today at:

Date: Wednesday, August 2nd

Time: 8:00 am New York Time / 1:00 pm London Time / 2:00 pm CET

The dial in number: +44 20 7070 5579



Page 3 of 24

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Forward-Looking Statements

This document may contain forward-looking information and statements about Mittal Steel Company N.V., Arcelor S.A. and/or their combined businesses after completion of the proposed acquisition. These statements include
financial projections and estimates and their underlying assumptions, statements regarding plans, objectives and expectations with respect to future operations, products and services, and statements regarding future performance. Forward-looking
statements may be identified by the words believe, expect, anticipate, target or similar expressions. Although Mittal Steels management believes that the expectations reflected in such
forward-looking statements are reasonable, investors and holders of Arcelors securities are cautioned that forward-looking information and statements are subject to numerous risks and uncertainties, many of which are difficult to predict and
generally beyond the control of Mittal Steel, that could cause actual results and developments to differ materially and adversely from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and
uncertainties include those discussed or identified in the filings with the Netherlands Authority for the Financial Markets and the SEC made or to be made by Mittal Steel, including (in the latter case) on Form 20-F and on Form F-4. Mittal Steel
undertakes no obligation to publicly update its forward-looking statements, whether as a result of new information, future events, or otherwise.

No offer to exchange or purchase any Arcelor shares or convertible bonds has been or will be made in The Netherlands or in any jurisdiction other than Luxembourg, Belgium, Spain, France and the United States. This
document does not constitute an offer to exchange or purchase any Arcelor shares or convertible bonds. Such an offer is made only pursuant to the official offer document approved by the appropriate regulators.

In connection with its proposed acquisition of Arcelor S.A., Mittal Steel has filed important documents (1) in Europe, with theCommission de Surveillance du Secteur
Financier(CSSF) in Luxembourg, theCommission Bancaire, Financière et des Assurances(CBFA) in Belgium, theComisión Nacional del Mercado de Valores(CNMV) in Spain and theAutorité des marchés
financiers(AMF) in France, including local versions of the Information Document approved by the CSSF, the CBFA and the AMF (AMF approval no. 06-139) on May 16, 2006 and by the CNMV on May 22, 2006 and local
versions of supplements thereto approved by such regulators on May 31, 2006 (AMF approval no. 06-169) and July 4, 2006 (AMF no. 06-250), and a Share Listing Prospectus approved by theAutoriteit
Financiële Markten(AFM) in The Netherlands on May 16, 2006 and supplements thereto approved by the AFM on May 31, 2006, June 23, 2006, July 4, 2006, and July 5, 2006 and (2) with the Securities and
Exchange Commission (SEC) in the United States, including a registration statement on Form F-4, a Prospectus for the exchange offer, dated June 7, 2006, an Amended and Restated Exchange Offer Prospectus, dated June 29, 2006, a prospectus supplement
dated July 7, 2006, and related documents. Investors and Arcelor security holders outside the United States are urged to carefully read the Information Document and the Share Listing Prospectus, including the supplements thereto, which together
contain all relevant information in relation to the Offer. Investors and Arcelor security holders in the United States are urged to carefully read the registration statement on Form F-4, the Amended and Restated Exchange Offer Prospectus, the
prospectus supplement thereto, and related documents. All such documents contain important information. Investors and Arcelor security holders may obtain copies of such documents free of charge on Mittal Steels website atwww.mittalsteel.com. In addition, the French version of the Information Document is available on the AMFs website atwww.amf-france.org, the Spanish version of the Information Document is available on the CNMVs website atwww.cnmv.es, and the registration statement on Form F-4, the Amended and Restated Prospectus, the prospectus supplement thereto and related documents are available on the SECs website atwww.sec.gov.



Page 4 of 24

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For further information, visit our web site:www.mittalsteel.com, or call:

|Mittal Steel Company N.V.    |  | Mittal Steel Company N.V.                  
|---------------------------- |  | -------------------------------------------
|Julien Onillon,              |  | Thomas A. McCue,                           
|Director, Investor Relations |  | Director, North American Investor Relations
|+44 (0)20 7543 1136          |  | (and Treasurer Mittal Steel USA)           
|                             |  | +1 312 899 3927                            
|Mittal Steel Company N.V.    |  |                                            
|Do-hyun AN,                  |  |                                            
|Manager, Investor Relations  |  |                                            
|+44 (0)20 7543 1150          |  |                                            









Page 5 of 24

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MITTAL STEEL COMPANY N.V. REPORTS 
SECOND QUARTER 2006 RESULTS

Mittal Steel Company N.V. (New York: MT; Amsterdam: MT; Madrid: MTS; Paris: MTP; Brussels: MTBL; Luxembourg: MT), net income for the three months ended June 30, 2006, was $1.0 billion or $1.44 per share, as compared
with net income of $743 million or $1.06 per share for the three months ended March 31, 2006, and $1.1 billion or $1.57 per share for the three months ended June 30, 2005.

Consolidated sales and operating income for the three months ended June 30, 2006, were $9.2 billion and $1.5 billion, respectively, as compared with $8.4 billion and $1.0 billion, respectively, for the three months
ended March 31, 2006, and as compared with $7.6 billion and $1.4 billion, respectively, for the three months ended June 30, 2005.

Total steel shipments1for the three months ended June 30, 2006, were 16.8 million tons as compared with 15.6 million tons for the
three months ended March 31, 2006, and 12.2 million tons for the three months ended June 30, 2005.

Group inter-company transactions have been eliminated in financial consolidation. The financial information in this press release has been prepared based on accounting principles generally accepted in the United States
of America (US GAAP). Appendix 1 includes reconciliation from US GAAP to International Financial Reporting Standards as endorsed by the European Union (IRFS) and Appendix 4 includes financial information prepared on the basis
of IFRS.

The following analysis of operations includes Mittal Steel USA ISG Inc. (ISG), formerly International Steel Group, from April 15, 2005, the results of Mittal Steel Kryviy Rih, formerly Kryvorizhstal
(Ukraine), from November 26, 2005, and the results of certain former Stelco subsidiaries (namely Norambar Inc. and Stelfil Ltée plants located in Quebec and the Stelwire Ltd. plant in Ontario), from February 1, 2006. As a result, prior period
results are not entirely comparable.

Steel shipments in the three months ended June 30, 2006, were higher by 7% as compared with the three months ended March 31, 2006, primarily due to improved market conditions for our products and improved sales volumes
at Mittal Steel Kryviy Rih. Steel shipments for the three months ended June 30, 2006, were 38% higher as compared with the three months ended June 30, 2005, due primarily to the inclusion of ISG and Mittal Steel Kryviy Rih (16% higher excluding ISG
and Mittal Steel Kryviy Rih).

Average selling prices in the three months ended June 30, 2006, were higher by 3% as compared with the three months ended March 31, 2006, due to an improved market. However, average selling prices in the three months
ended June 30, 2006, were lower by 7% as compared with the three months ended June 30, 2005 (4% lower excluding ISG and Mittal Steel Kryviy Rih).

Average cost of sales (excluding depreciation) per ton during the three months ended June 30, 2006, were lower by 2% as compared with the three months ended March 31, 2006, primarily due to improved steel production.
Average cost of sales (excluding depreciation) per ton during the three months ended June 30, 2006, was lower by 6% as compared with the three months ended June 30, 2005, due primarily to the lower cost base of Mittal Steel Kryviy Rih relative to
Mittal Steels other operations (1% lower excluding ISG and Mittal Steel Kryviy Rih).

Selling, general and administrative expenses in the three months ended June 30, 2006, decreased by 8% as compared with the three months ended March 31, 2006, primarily due to capitalized mergers and acquisition related
expenses included in first quarter 2006. In the three months ended June 30, 2006, selling, general and administrative expenses decreased by

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2% as compared with the three months ended June 30, 2005 (14% lower excluding ISG and Mittal Steel Kryviy Rih).

Other operating income for the three months ended June 30, 2006, was $52 million which includes $34 million reversal of certain provisions in Europe and $6 million worth ofCO2emissions sales in Europe. This compares to $19 million for the three months ended March 31, 2006, which includes $31 million of CO2 emission sales in Europe. There was no
other operating income for the three months ended June 30, 2005.

Operating income for the three months ended June 30, 2006, was $1.5 billion as compared with $1.0 billion for the three months ended March 31, 2006.Operating incomefor the three months ended June 30, 2005, was $1.4 billion.

Other income (expense)-net for the three months ended June 30, 2006, was $3 million as compared with $7 million for the three months ended March 31, 2006.  Other income (expense)-net for the three months ended June 30,
2005, was $35 million, which included a gain from sale of property and dividends from our investments.

Income from equity method investments for the three months ended June 30, 2006, was $13 million as compared with $25 million for the three months ended March 31, 2006. Income from equity method investments were $32
million for the three months ended June 30, 2005.

Net interest expense for the three months ended June 30, 2006, declined to $102 million as compared with $110 million for the three months ended March 31, 2006, following an overall reduction in net debt. Net interest
expense for the three months ended June 30, 2005, was $55 million.

Income tax expense for the three months ended June 30, 2006, amounted to $370 million as compared with $116 million for the three months ended March 31, 2006. The effective tax rate for the three months ended June 30,
2006, was 25% as compared with 12% for three months ended March 31, 2006. The effective tax rate for the three months ended March 31, 2006 was lower primarily due to the release of valuation allowances of $107 million. Income tax expense for the
three months ended June 30, 2005, amounted to $165 million with an effective tax rate of 12%.

Net income for the three months ended June 30, 2006, increased to $1,015 million as compared with the three months ended March 31, 2006, of $743 million. Net income for the three months ended June 30, 2006, was lower
as compared with $1,090 million for the three months ended June 30, 2005, owing to the reasons discussed above.

Total steel shipments in the Americas region were 6.9 million tons in the three months ended June 30, 2006, as compared with 6.8 million tons for the three months ended March 31, 2006, primarily due to improved market
conditions for our products particularly in our Mexican operations. The effect of these improved market conditions was partly offset by reduced shipments at Mittal Steel USA resulting from a fire in its Indiana Harbor facility in East Chicago on
April 28, 2006, which halted production in one of the steelmaking shops. This decreased steel production by approximately 200,000 tons and at Mittal Steel USAs Sparrows Point facility which faced severe production issues following a lightning
strike at an electrical substation during a storm on June 23, 2006. The Mittal Steel USAs Sparrows Point facility is expected to lose approximately 250,000 tons of ironmaking as a result of the incident. The damage to equipment and losses
associated with business interruption in excess of the Companys deductible is to be covered by insurance in both instances.

Total steel shipments were higher in the three months ended June 30, 2006, as compared with 5.4 million tons for the three months ended June 30, 2005, primarily due to the inclusion of ISG. Excluding the impact of ISG,
total steel shipments were higher in the three months ended June 30, 2006, at 3.0 million tons, as compared with 2.6 million tons for the three months ended June 30, 2005.

Page 7 of 24

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Sales were higher at $4.2 billion for the three months ended June 30, 2006, as compared with $4.1 billion for the three months ended March 31, 2006, primarily as a result of increased shipments and a marginal increase
in selling prices. Sales were higher in the three months ended June 30, 2006, as compared with $3.5 billion for the three months ended June 30, 2005, primarily due to the inclusion of ISG, with increased shipments offset by marginally lower selling
prices. Excluding the impact of ISG, sales were higher at $1.6 billion in the three months ended June 30, 2006, as compared with $1.5 billion for the three months ended June 30, 2005.

Operating income was higher at $448 million for the three months ended June 30, 2006, as compared with $340 million for the three months ended March 31, 2006, primarily due to higher volumes and marginally higher
average selling prices, as well as lower costs. Operating income for the three months ended June 30, 2006, remained flat as compared with the three months ended June 30, 2005, as the impact of higher shipments and lower cost of sales was offset by
lower selling prices. Excluding the impact of ISG, operating income was lower at $173 million for the three months ended June 30, 2006, as compared with $270 million for the three months ended June 30, 2005.

Total steel shipments in the European region were 6.8 million tons for the three months ended June 30, 2006, as compared with 5.8 million tons for the three months ended March 31, 2006. Total steel shipments were
higher in the three months ended June 30, 2006, as compared with 4.0 million tons for the three months ended June 30, 2005, primarily due to the inclusion of Mittal Steel Kryviy Rih. Excluding Mittal Steel Kryviy Rih, total steel shipments in the
European region were higher at 4.8 million tons for the three months ended June 30, 2006, as compared with 4.0 million tons for the three months ended June 30, 2005.

Sales were higher at $3.5 billion in the three months ended June 30, 2006, as compared with $2.9 billion for the three months ended March 31, 2006, primarily due to improved shipments in our Ukrainian operations and
higher selling prices. Sales were higher in the three months ended June 30, 2006, as compared to $2.6 billion for the three months ended June 30, 2005, primarily due to the inclusion of Mittal Steel Kryviy Rih as well as improved shipments in our
Czech and Polish operations, the effect of which was partially offset by reduced selling prices primarily in our German and French operations. Excluding Mittal Steel Kryviy Rih, sales were higher at $2.7 billion in the three months ended June 30,
2006, as compared with $2.6 billion for the three months ended June 30, 2005, due to higher shipments partially offset by lower selling prices.

Operating income was higher at $719 million for the three months ended June 30, 2006 as compared with $344 million for the three months ended March 31, 2006, primarily due to higher volumes, higher selling prices and
marginally lower costs. Operating income for the three months ended March 31, 2006 also includes $56 million from the reduction of customer rebates. Operating income for the three months ended June 30, 2006, was higher as compared with $263 million
for the three months ended June 30, 2005 primarily due to higher volumes and lower costs offset by reduced selling prices as well as the inclusion of Mittal Steel Kryviy Rih. Excluding Mittal Steel Kryviy Rih, operating income was higher at $501
million for the three months ended June 30, 2006, as compared with $263 million for the three months ended June 30, 2005.

Total steel shipments in the Asia & Africa region were 3.1 million tons in the three months ended June 30, 2006, as compared with 3.0 million tons for three months ended March 31, 2006 and 2.7 million tons for the
three months ended June 30, 2005.

Sales were higher at $1.7 billion in the three months ended June 30, 2006, as compared with $1.6 billion for the three months ended March 31, 2006 primarily due to higher volumes and selling prices. Sales were lower in
the three months ended June 30, 2006, as compared with $2.1 billion for the three months ended June 30, 2005 primarily due to higher shipments offset by lower selling prices.

Page 8 of 24

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Operating income was higher at $326 million for the three months ended June 30, 2006, as compared with $282 million for the three months ended March 31, 2006, primarily due to higher shipments and selling prices
partially offset by increased costs. Operating income for the three months ended June 30, 2006 was lower as compared with $678 million for the three months ended June 30, 2005, primarily due to higher shipments offset by lower selling prices and
higher costs.

The Companys liquidity position remains strong. As of June 30, 2006, the Companys cash and cash equivalents including restricted cash and short-term investments were $3.2 billion ($2.2 billion at March 31,
2006). Restricted cash at June 30, 2006 includes $987 million in respect of cash collateral provided for a bank guarantee in connection with the Arcelor offer. In addition, the Company, including its operating subsidiaries, had available borrowing
capacity of $2.2 billion at June 30, 2006, as compared with $2.3 billion at March 31, 2006.

For the three months ended June 30, 2006, net cash provided by operating activities was $1,719 million, as compared with $388 million for the three months ended March 31, 2006, primarily due to the increase in trade
accounts payables and improvements in trade account receivables. For the three months ended June 30, 2005, net cash provided by operating activities was $983 million. Net working capital (inventory plus accounts receivable plus prepaid expenses
minus accounts payable minus accrued expenses and other liabilities) improved by $285 million.

As of June 30, 2006 the Companys net debt (which includes long-term debt plus short-term debt less cash and cash equivalents, short term investments and restricted cash) declined by $1.1 billion to $5.1 billion
as compared to $6.2 billion at March 31, 2006.

Capital expenditure during the three months ended June 30, 2006, was $348 million as compared with $263 million for the three months ended March 31, 2006, and $255 million for the three months ended June 30,
2005.

Depreciation during the three months ended June 30, 2006, was $261 million as compared with $287 million for the three months ended March 31, 2006. Depreciation during the three months ended June 30, 2006, was higher
as compared with $192 million for the three months ended June 30, 2005 (primarily due to inclusion of ISG and Mittal Steel Kryviy Rih).

As previously announced, Mittal Steel will pay a US$ 0.125 per share quarterly dividend on September 15, 2006.

During the three months ended June 30, 2006, Mittal Steel paid interim dividends of $105 million which includes a $17 million dividend payment to the Ukraine government. During the three months ended March 31, 2006,
Mittal Steel paid interim dividends of $136 million (including $48 million of dividends paid to minority shareholders at Mittal Steels South African subsidiary).

On April 1, 2006, Ispat Inland ULC redeemed $150 million of floating rate notes bearing interest at LIBOR plus 6.75% due April 1, 2010. The floating rate notes were redeemed at a price of 103.0% of the principal amount
(the call premium of $4.5 million was expensed in the three months ended March 31, 2006).

On April 4, 2006, Mittal Steel signed a $200 million loan agreement with the European Bank for Reconstruction and Development for on-lending to Mittal Steel Kryviy Rih. The loan has a maturity of seven years and bears
interest based on LIBOR plus a margin based on a ratings grid. Drawdown of this facility took place on May 10, 2006.

On April 20, 2006, the Pension Benefit Guaranty Corporation (PBGC) converted the entire $35 million outstanding principal amount plus accrued interest of the convertible note issued by ISG into 1,268,719
class A common shares of Mittal Steel.

On May 23, 2006, the Company entered into a€2.8 billion (approximately $3.4 billion) credit agreement to finance (together with a€5.0 billion (approximately $6.1 billion) credit

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agreement entered into on January 30, 2006 with the same group of lenders) the cash portion of the offer for Arcelor.

Mittal Steels $3.5 billion Bridge financing facility used for the Mittal Steel Kryviy Rih acquisition has been repaid in full on June 26, 2006 with the proceeds of the Companys€3.0 billion credit agreement. This Bridge facility was subsequently cancelled.

Recent Developments

|• | On July 26, 2006 Mittal Steel Company N.V. announced the final results of the initialoffering period of its offer for Arcelor securities, which expired on July 13 in Belgium,France, Luxembourg, Spain and the U.S. As of such date, in the aggregate:                                                                                                                                                                                                                                                                                                                                                                                                   
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|  | •                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|  | •                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|• | As a result, 665.6 million new Mittal Steel shares will be issued as consideration for theoffer and the cash portion of the total offer consideration will be approximately€7.78billion.                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|  | The cash portion of the offer was financed with cash resources available to the Company,i.e., its€5 billion credit facility and its€2.8 million bridge facility. Both of these facilitieswere entered into to finance the cash portion of the offer.                                                                                                                                                                                                                                                                                                                                                                                                      
|  | In addition, the settlement of the offer made in the initial offering period, the delivery ofthe Mittal Steel shares offered, the payment of the cash consideration and the listing ofthe new Mittal Steel shares issued as consideration on Euronext Amsterdam, EuronextBrussels, Euronext Paris, the Luxembourg Stock Exchange, the New York Stock Exchangeand the stock exchanges of Barcelona, Bilbao, Valencia and Madrid, occurred on August 1,2006.                                                                                                                                                                                                
|  | Pursuant to Luxembourg and Belgian laws, the Company has commenced a subsequentoffering period of the offer in Belgium, France, Luxembourg, Spain and the U.S., lastingfrom July 27, 2006 to August 17, 2006. The subsequent offering period will have the sameterms and conditions as the initial offering period that ended on July 13, 2006 (except forthe minimum tender condition, which has already been met).                                                                                                                                                                                                                                      
|  | Pursuant to Luxembourg law, after the end of the subsequent offering period, Arcelor'sremaining shareholders will be entitled to initiate proceedings to sell their shares toMittal Steel. Consideration for such sale may be, at the discretion of Mittal Steel, eitherthe same consideration as offered in the offer, with the cash secondary offer beinguncapped, or a cash option only at a price of Euros 40.40 per Arcelor share. This sell-outright must be exercised during the three-month period starting on August 18, 2006 andending on November 17, 2006. A further press release will detail the terms andconditions of this sell-out right.
|• | Following the announcement of the final results of the offer, on July 26, 2006 Standard &Poors lowered its long-term corporate credit rating on the Company from BBB+ toBBB and removed the rating from CreditWatch with negative implications.                                                                                                                                                                                                                                                                                                                                                                                                      

Outlook for third quarter 2006
Operating income is expected to increase by approximately 25% in Q306 on Q206 levels.



Page 10 of 24

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MITTAL STEEL COMPANY N.V. CONSOLIDATED FINANCIAL & OTHER INFORMATION (UNDER US GAAP)

MITTAL STEEL COMPANY N.V. CONSOLIDATED BALANCE SHEETS

|Balance sheet                       |  |             |  | As of       |  |             
|----------------------------------- |  | ----------- |  | ----------- |  | ------------
|                                    |  |             |  |             |  |             
|                                    |  | June 30,    |  | March 31,   |  | December 31,
|In millions of US dollars           |  | 2006        |  | 2006        |  | 2005        
|                                    |  | (Unaudited) |  | (Unaudited) |  | (Audited)   
|                                    |  |             |  |             |  |             
|ASSETS                              |  |             |  |             |  |             
|Current Assets                      |  |             |  |             |  |             
|Cash and cash equivalents           |  | $ 2,121     |  | $ 2,051     |  | $ 2,035     
|Restricted cash                     |  | 1,054       |  | 85          |  | 100         
|Short-term investments              |  | 14          |  | 15          |  | 14          
|Trade accounts receivable  net     |  | 2,895       |  | 2,957       |  | 2,287       
|Inventories                         |  | 5,856       |  | 5,839       |  | 6,036       
|Prepaid expenses and other          |  | 1,022       |  | 1,116       |  | 1,040       
|current assets                      |  |             |  |             |  |             
|Deferred tax assets                 |  | 195         |  | 174         |  | 200         
|                                    |  |             |  |             |  |             
|Total Current Assets                |  | 13,157      |  | 12,237      |  | 11,712      
|                                    |  |             |  |             |  |             
|                                   
|Property, plant and equipment      |  | 15,329      |  | 15,555      |  | 15,539      
|net                                 |  |             |  |             |  |             
|Investments in affiliates and       |  | 1,154       |  | 1,178       |  | 1,187       
|joint ventures                      |  |             |  |             |  |             
|Deferred tax assets                 |  | 914         |  | 885         |  | 785         
|Goodwill and intangible assets      |  | 1,898       |  | 1,671       |  | 1,439       
|Other assets                        |  | 343         |  | 357         |  | 380         
|                                    |  |             |  |             |  |             
|Total Assets                        |  | $32,795     |  | $31,883     |  | $31,042     
|                                    |  |             |  |             |  |             
|                                   
|LIABILITIES AND SHAREHOLDERS       |  |             |  |             |  |             
|EQUITY                              |  |             |  |             |  |             
|Current Liabilities                 |  |             |  |             |  |             
|Payable to banks and current        |  | $ 169       |  | $ 376       |  | $ 334       
|portion of long-term debt           |  |             |  |             |  |             
|Trade accounts payable              |  | 2,617       |  | 2,482       |  | 2,504       
|Accrued expenses and other          |  | 2,865       |  | 2,701       |  | 2,661       
|current liabilities                 |  |             |  |             |  |             
|Deferred tax liabilities            |  | 160         |  | 140         |  | 116         
|                                    |  |            
|Total Current Liabilities           |  | 5,811       |  | 5,699       |  | 5,615       
|                                    |  |            
|Long-term debt, net of current      |  | 8,089       |  | 7,940       |  | 7,974       
|portion                             |  |             |  |             |  |             
|Deferred tax liabilities            |  | 1,463       |  | 1,445       |  | 1,602       
|Deferred employee benefits          |  | 2,606       |  | 2,634       |  | 2,506       
|Other long-term obligations         |  | 1,268       |  | 1,385       |  | 1,361       
|                                    |  |            
|Total Liabilities                   |  | 19,237      |  | 19,103      |  | 19,058      
|                                    |  |             |  |             |  |             
|                                   
|Minority Interest                   |  | 2,015       |  | 1,904       |  | 1,834       
|                                   
|Shareholders Equity                |  |             |  |             |  |             
|Common shares                       |  | 60          |  | 60          |  | 60          
|Treasury stock                      |  | (90)        |  | (110)       |  | (111)       
|Additional paid-in capital          |  | 2,479       |  | 2,458       |  | 2,456       
|Retained earnings                   |  | 9,470       |  | 8,543       |  | 7,891       
|Accumulated other                   |  | (376)       |  | (75)        |  | (146)       
|comprehensive income (loss)         |  |             |  |             |  |             
|                                    |  |             |  |             |  |             
|Total Shareholders Equity          |  | 11,543      |  | 10,876      |  | 10,150      
|                                    |  |             |  |             |  |             
|Total Liabilities and Shareholders |  | $32,795     |  | $31,883     |  | $31,042     
|Equity                              |  |             |  |             |  |             

Page 11 of 24

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MITTAL STEEL COMPANY N.V. CONSOLIDATED FINANCIAL & OTHER INFORMATION (UNDER US GAAP)

MITTAL STEEL COMPANY N.V.
  CONSOLIDATED STATEMENTS OF INCOME DATA & OTHERINFORMATION

|                                                                    |  | Three Months Ended |  | Six Months Ended
|------------------------------------------------------------------- |  | ------------------ |  | ----------------
|                                                                    |  |                   
|In millions of US dollars, except                                   |  | June 30,           |  | March 31,       
|shares, per share and shipment data                                 |  | 2006               |  | 2006            
|                                                                    |  | Unaudited          |  | Unaudited       
|                                                                    |  |                    |  |                 
|                                                                   
|STATEMENTS OF INCOME DATA                                           |  |                    |  |                 
|Sales                                                               |  | $ 9,230            |  | $ 8,430         
|Costs and expenses:                                                 |  |                    |  |                 
|Cost of sales (exclusive of                                         |  | 7,237              |  | 6,854           
|depreciation shown separately)                                      |  |                    |  |                 
|Depreciation                                                        |  | 261                |  | 287             
|Selling, general and administrative 
                      expenses |  | 267                |  | 291             
|Other operating (income) expense                                    |  | (52)               |  | (19)            
|- net                                                               |  |                    |  |                 
|                                                                    |  | 7,713              |  | 7,413           
|Operating income                                                    |  | 1,517              |  | 1,017           
|Operating margin                                                    |  | 16.4%              |  | 12.1%           
|Other income (expense)  net                                        |  | 3                  |  | 7               
|Income from equity method                                           |  | 13                 |  | 25              
|investments                                                         |  |                    |  |                 
|Financing costs:                                                    |  |                    |  |                 
|Interest (expense)                                                  |  | (142)              |  | (130)           
|Interest income                                                     |  | 40                 |  | 20              
|Net gain (loss) from foreign                                        |  | 75                 |  | 5               
|exchange transactions                                               |  |                   
|                                                                    |  | (27)               |  | (105)           
|Income before taxes and minority                                    |  | 1,506              |  | 944             
|interest                                                            |  |                    |  |                 
|Income tax expense:                                                 |  |                    |  |                 
|Current                                                             |  | 281                |  | 151             
|Deferred                                                            |  | 89                 |  | (35)            
|                                                                    |  |                    |  |                 
|                                                                    |  |                   
|                                                                    |  | 370                |  | 116             
|                                                                    |  |                   
|Income before minority interest                                     |  | 1,136              |  | 828             
|                                                                    |  |                   
|Minority interest                                                   |  | (121)              |  | (85)            
|                                                                    |  |                   
|Net income                                                          |  | $ 1,015            |  | $ 743           
|                                                                    |  |                   
|Basic earnings per common share                                     |  | $1.44              |  | $1.06           
|                                                                    |  |                   
|Diluted earnings per common share                                   |  | 1.44               |  | 1.05            
|                                                                    |  |                   
|Weighted average common shares                                      |  | 705                |  | 704             
|outstanding (in millions)                                           |  |                    |  |                 
|Diluted weighted average common                                     |  | 706                |  | 706             
|shares outstanding (in millions)                                    |  |                    |  |                 
|                                                                    |  |                    |  |                 

---



|OTHER INFORMATION                 |  |        |        |        |        |       
|--------------------------------- |  | ------ | ------ | ------ | ------ | ------
|Total shipments of steel products |  | 16,763 | 15,597 | 12,181 | 32,360 | 22,560
|including inter-company shipments |  |        |        |        |        |       
|(thousands of short tons)         |  |        |        |        |        |       
|                                  |  |        |        |        |        |       











Page 13 of 24

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MITTAL STEEL COMPANY N.V. CONSOLIDATED FINANCIAL & OTHER INFORMATION (UNDER US GAAP)

MITTAL STEEL COMPANY N.V.
  CONSOLIDATED STATEMENTS OF CASH FLOWS

|                                       |  | Three Months Ended |  | Six Months Ended
|-------------------------------------- |  | ------------------ |  | ----------------
|                                       |  |                    |  |                 
|In millions of US dollars              |  | June 30,           |  | March 31,       
|                                       |  | 2006               |  | 2006            
|                                       |  | (Unaudited)        |  | (Unaudited)     
|                                       |  |                   
|Operating activities:                  |  |                    |  |                 
|Net income                             |  | $ 1,015            |  | $ 743           
|Adjustments to reconcile net           |  |                    |  |                 
|income to net cash provided            |  |                    |  |                 
|by operations:                         |  |                    |  |                 
|Depreciation                           |  | 261                |  | 287             
|Net accretion of purchased intangibles |  | (101)              |  | (89)            
|Net foreign exchange loss (gain)       |  | 32                 |  | (3)             
|Deferred income tax                    |  | 89                 |  | (35)            
|Income from equity method              |  | (31)               |  | (24)            
|investment                             |  |                    |  |                 
|Distribution from equity               |  | 13                 |  | 12              
|method investments                     |  |                    |  |                 
|Loss (gain) on sale of                 |  | 14                 |  | 2               
|property plant & equipment             |  |                    |  |                 
|Minority interest                      |  | 121                |  | 85              
|Other non cash operating               |  | (18)               |  | (29)            
|activities (net)                       |  |                    |  |                 
|Changes in operating assets            |  |                    |  |                 
|and liabilities, net of effects        |  |                    |  |                 
|from acquisitions:                     |  |                    |  |                 
|Trade accounts receivable              |  | 2                  |  | (544)           
|Short-term investments                 |  | -                  |  | -               
|Inventories                            |  | (64)               |  | 308             
|Prepaid expenses and other
 assets     |  | 11                 |  | (14)            
|Trade accounts payable                 |  | 188                |  | (104)           
|Accrued expenses and other liabilities |  | 148                |  | (211)           
|Deferred employee benefit costs        |  | 39                 |  | 4               
|                                       |  |                   
|Net cash provided by                   |  | 1,719              |  | 388             
|operating activities                   |  |                    |  |                 
|                                       |  |                   
|Investing activities:                  |  |                    |  |                 
|Purchase of property, plant            |  | (348)              |  | (263)           
|and equipment                          |  |                    |  |                 
|Proceeds from sale of assets           |  | 15                 |  | 4               
|and investments                        |  |                    |  |                 
|including affiliates and               |  |                    |  |                 
|joint ventures                         |  |                    |  |                 
|Acquisition of net assets of           |  | (2)                |  | (32)            
|subsidiaries, net of cash              |  |                    |  |                 
|acquired                               |  |                    |  |                 
|Investments in affiliates and          |  | 3                  |  | 1               
|joint ventures - net                   |  |                    |  |                 
|                                      
|Restricted cash                        |  | (969)              |  | 15              
|                                      
|Page 14 of 24                          |  |                    |  |                 

---

|Other investing activities           |  | 11      |  | (3)    |  | (1)     |  | 8       |  | (1)    
|------------------------------------ |  | ------- |  | ------ |  | ------- |  | ------- |  | -------
|(net)                                |  |         |  |        |  |         |  |         |  |        
|                                     |  |        
|Net cash used in investing           |  | (1,290) |  | (278)  |  | (1,600) |  | (1,568) |  | (2,258)
|activities                           |  |         |  |        |  |         |  |         |  |        
|                                     |  |        
|Financing activities:                |  |         |  |        |  |         |  |         |  |        
|Proceeds from payable to banks       |  | 33      |  | 13     |  | 824     |  | 46      |  | 1,344  
|Proceeds from long-term
        debt |  | 4,183   |  | 179    |  | 3,080   |  | 4,362   |  | 3,099  
|Debt issuance cost                   |  | (57)    |  | -      |  | (10)    |  | (57)    |  | (10)   
|Payments of payable to banks         |  | (108)   |  | (20)   |  | (707)   |  | (128)   |  | (1,215)
|Payments of long-term debt           |  | (4,222) |  | (165)  |  | (1,208) |  | (4,387) |  | (1,324)
|Purchase of treasury stock           |  | -       |  | 1      |  | -       |  | 1       |  | -      
|Sale of treasury stock for           |  | 3       |  | (2)    |  | 4       |  | 1       |  | 6      
|stock option exercised               |  |         |  |        |  |         |  |         |  |        
|Dividends paid (includes $48         |  | (105)   |  | (136)  |  | (1,375) |  | (241)   |  | (1,801)
|of dividend paid to                  |  |         |  |        |  |         |  |         |  |        
|minority shareholders                |  |         |  |        |  |         |  |         |  |        
|during the first quarter             |  |         |  |        |  |         |  |         |  |        
|2006; $nil for second                |  |         |  |        |  |         |  |         |  |        
|quarter 2005 and $150                |  |         |  |        |  |         |  |         |  |        
|for the first quarter 2005)          |  |         |  |        |  |         |  |         |  |        
|Other financing activities (net)     |  | -       |  | -      |  | (18)    |  | -       |  | (18)   
|                                    
|Net cash provided by (used in)       |  | (273)   |  | (130)  |  | 590     |  | (403)   |  | 81     
|financing activities                 |  |         |  |        |  |         |  |         |  |        
|                                    
|Net increase (decrease) in           |  | 156     |  | (20)   |  | (27)    |  | 136     |  | (229)  
|cash and cash equivalents            |  |         |  |        |  |         |  |         |  |        
|                                    
|Effect of exchange rate              |  | (86)    |  | 36     |  | (95)    |  | (50)    |  | (217)  
|changes on cash                      |  |         |  |        |  |         |  |         |  |        
|                                    
|Cash and cash equivalents:           |  |         |  |        |  |         |  |         |  |        
|At the beginning of the period       |  | 2,051   |  | 2,035  |  | 2,171   |  | 2,035   |  | 2,495  
|                                     |  |        
|At the end of the period             |  | $2,121  |  | $2,051 |  | $2,049  |  | $2,121  |  | $2,049 
|                                     |  |        

Page 15 of 24

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Mittal Steel Company N.V.Appendix 1  Quarter 2 2006Unaudited Reconciliation of US GAAP financials to IFRS

US GAAP to IFRS reconciliation

The Company considers US GAAP as its primary GAAP. The statutory financial statements of Mittal Steel are prepared in accordance IFRS. To provide an understanding of the differences between US GAAP and IFRS, the effect
  on consolidated shareholders equity and net income are described in the following table and notes:

|                                                              |  | June 30, 2006  |  | June 30, 2005 
|------------------------------------------------------------- |  | -------------- |  | --------------
|                                                              |  |                |  |               
|                                                             
|Shareholders equity as reported in accordance with US        |  | $11,543        |  | $9,190        
|Minority GAAP interest as reported in accordance with US GAAP |  | 2,015          |  | 1,756         
|                                                              |  |                |  |               
|                                                              |  | 13,558         |  | 10,946        
|Adjustments recorded to comply with IFRS                      |  |                |  |               
|Employee benefits (see note 1)                                |  | 1,349          |  | 1,020         
|Business combinations (see note 2)                            |  | 3,219          |  | 3,625         
|Other (see note 3)                                            |  | 1              |  | 1             
|Tax effect on the above (see note 4)                          |  | (1,286)        |  | (1,081)       
|                                                              |  |                |  |               
|Total increase                                                |  | 3,283          |  | 3,565         
|                                                              |  |                |  |               
|Total equity as reported in accordance with IFRS              |  | $16,841        |  | $14,511       
|                                                              |  |                |  |               
|                                                             
|                                                              |  | Six months     |  | Six months    
|                                                              |  | ended June 30, |  | ended June 30,
|                                                              |  | 2006           |  | 2005          
|                                                              |  |                |  |               
|                                                             
|Net income as reported in accordance with US GAAP             |  | $1,758         |  | $2,237        
|Minority interest as reported in accordance with US GAAP      |  | 206            |  | 327           
|                                                              |  |                |  |               
|Total under US GAAP (including minority interest)             |  | 1,964          |  | 2,564         
|Adjustments recorded to comply with IFRS                      |  |                |  |               
|Employee benefits (see note 1)                                |  | (21)           |  | (14)          
|Business combinations (see note 2)                            |  | (225)          |  | 17            
|Other (see note 3)                                            |  | (23)           |  | (4)           
|Tax effect on the above (see note 4)                          |  | 4              |  | 28            
|                                                              |  |                |  |               
|Total (decrease) / increase                                   |  | (265)          |  | 27            
|                                                              |  |                |  |               
|Net income as reported in accordance with IFRS                |  | $1,699         |  | $2,591        
|                                                              |  |                |  |               

Notes to the reconciliation from US GAAP to IFRS

1) Employee benefits

Under US GAAP past service cost is amortized over the remaining working lives for both vested and unvested rights, whereas under IFRS only unvested rights remain unrecognized. Under US GAAP a company is required to
recognize a minimum pension liability if certain conditions have been met. IFRS does not require such a minimum pension liability.

2) Business combinations

Under US GAAP, negative goodwill is deducted, on a pro-rata basis, from the value of the non-current assets acquired, primarily property, plant and equipment. Under IFRS negative goodwill is directly recognized in the
  income statement. Because the carrying amount of non current assets is higher under IFRS, the depreciation in the income statement increases proportionally.

---

Under IFRS, the requirements for including a restructuring provision in the liabilities assumed in a business combination are more stringent than under US GAAP. In 2006 additional purchase accounting liabilities were
recorded, which do not qualify for IFRS. Also additional values were assigned to assets acquired and liabilities assumed, which were equal for IFRS and US GAAP. As the adjustment to assets acquired exceeded the adjustment to liabilities assumed,
additional negative goodwill income was recognized to an amount of $51 million (net of tax). The difference is included in opening equity in accordance with IFRS 3. As a consequence, expenses recorded against the provision under US GAAP are expensed
under IFRS.

Other adjustments relate mostly to measurement of inventory. Under IFRS inventory is measured on the basis of First In  First Out (FIFO). Under US GAAP the Company measures certain inventory on the basis of Last
In  First Out (LIFO). This measurement is adjusted for IFRS.

Under US GAAP, negative goodwill is deducted, on a pro-rata basis, from the value of the non-current assets acquired, primarily property, plant and equipment. A corresponding tax asset for the temporary difference
created is recorded, less a valuation allowance, if applicable. Under IFRS, negative goodwill is directly recognized in the income statement with no tax asset recorded.









Page 17 of 24

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Mittal Steel Company N.V.  Appendix 2  Quarter 2 2006 Shipments by country (Thousands of short tons)

|                                 |  | Three Months Ended
|-------------------------------- |  | ------------------
|                                 |  |                   
|                                 |  | June 30, 2006     
|Americas                         |  |                   
|United States of America         |  | 5,095             
|Mexico                           |  | 1,005             
|Canada                           |  | 538               
|Trinidad                         |  | 226               
|                                 |  |                   
|TOTAL AMERICAS                   |  | 6,864             
|                                 |  |                   
|Europe                           |  |                   
|West Europe (Germany and France) |  | 1,003             
|Poland                           |  | 1,337             
|Romania                          |  | 1,309             
|Czech Republic                   |  | 836               
|Ukraine                          |  | 2,022             
|Others                           |  | 276               
|                                 |  |                   
|TOTAL EUROPE                     |  | 6,783             
|                                 |  |                   
|Asia and Africa                  |  |                   
|Kazakhstan                       |  | 983               
|South Africa                     |  | 1,802             
|Algeria                          |  | 331               
|                                 |  |                   
|TOTAL ASIA AND AFRICA            |  | 3,116             
|                                 |  |                   
|MITTAL STEEL COMPANY N.V.        |  | 16,763            
|                                 |  |                   

- Amounts for total shipments of steel products (including inter-company shipments).
- The above analysis includes results of Mittal Steel USA ISG Inc. from April 15, 2005 andthe results of certain former Stelco subsidiaries from February 1, 2006 (within
Americasregion), and the results of Mittal Steel Kryviy Rih (within European region) fromNovember 26, 2005.

Page 18 of 24

---

|                                            
|--------------------------------------------
|Amounts in millions of US dollars           
|unless otherwise stated                     
|                                            
|Financial Information                       
|Sales                                       
|                                            
|Cost of sales (exclusive of                 
|depreciation)                               
|                                            
|Gross profit (before deducting depreciation)
|Gross margin (as percentage of sales)       
|                                            
|Depreciation                                
|Selling, general and administrative         
|expenses                                    
|Other Operating Expenses (Income)           
|                                            
|Operating income                            
|Operating margin (as percentage of sales)   
|                                            
|EBITDA*                                     
|EBITDA margin ( as percentage of sales)     
|                                            
|Capital expenditure                         
|                                            
|Operational Information                     
|Liquid Steel Production ('000 MT)           
|Liquid Steel Production ('000 ST)           
|                                            
|Shipments ('000 MT)                         
|Shipments ('000 ST)                         
|                                            
|Employees                                   
|                                            

|* | EBITDA is income before tax and minority interest plus interest plus depreciation                                                                                                                     
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|• | Shipment numbers include intercompany shipments.                                                                                                                                                      
|• | Sales as per statement of income above, includes other non-steel product sales (rawmaterials etc) and other sales (non-product). When computing average selling prices onlysteel sales are considered.
|• | Sales and cost of sales include shipping and handling fees as per EITF Issue No. 00-10.                                                                                                               



Page 19 of 24

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Mittal Steel Company N.V. Appendix 3- 1H 2006 Key Financial and operational information (Under US GAAP)

|Amounts in millions of US dollars            |  | Americas    |  | Europe      |  | Asia &      |  | Elimination |  | Mittal     
|-------------------------------------------- |  | ----------- |  | ----------- |  | ----------- |  | ----------- |  | -----------
|unless otherwise stated                      |  |             |  |             |  | Africa      |  |             |  | Steel      
|                                             |  | (Unaudited) |  | (Unaudited) |  | (Unaudited) |  | (Unaudited) |  | (Unaudited)
|Financial Information                        |  |            
|Sales                                        |  | $8,347      |  | $6,395      |  | $3,301*     |  | $(383)*     |  | $17,660    
|                                            
|Cost of sales (exclusive of                  |  | 7,153       |  | 4,930       |  | 2,424*      |  | (416)*      |  | 14,091     
|depreciation)                                |  |             |  |             |  |             |  |             |  |            
|                                            
|Gross profit (before deducting
depreciation) |  | 1,194       |  | 1,465       |  | 877         |  | 33          |  | 3,569      
|Gross margin (as percentage ofsales)         |  | 14.3%       |  | 22.9%       |  | 26.6%       |  |             |  | 20.2%      
|                                            
|Depreciation                                 |  | 235         |  | 182         |  | 131         |  | -           |  | 548        
|Selling, general and administrative
expenses |  | 173         |  | 292         |  | 137         |  | (44)        |  | 558        
|Other Operating Expenses (Income)            |  | -           |  | (71)        |  | -           |  | -           |  | (71)       
|                                            
|Operating income                             |  | 786         |  | 1,062       |  | 609         |  | 77          |  | 2,534      
|Operating margin (as percentage
of sales)    |  | 9.4%        |  | 16.6%       |  | 18.4%       |  |             |  | 14.3%      
|                                            
|EBITDA**                                     |  | 1,022       |  | 1,392       |  | 878         |  | (82)        |  | 3,210      
|EBITDA margin ( as percentage ofsales)       |  | 12.2%       |  | 21.8%       |  | 26.6%       |  |             |  | 18.2%      
|                                             |  |             |  |             |  |             |  |             |  |            
|                                            
|Capital expenditure                          |  | 188         |  | 246         |  | 177         |  | -           |  | 611        
|                                            
|Operational Information                      |  |             |  |             |  |             |  |             |  |            
|Liquid Steel Production ('000 MT)            |  | 14,006      |  | 12,503      |  | 5,927       |  |             |  | 32,436     
|Liquid Steel Production ('000 ST)            |  | 15,439      |  | 13,783      |  | 6,533       |  |             |  | 35,755     
|                                            
|Shipments ('000 MT)                          |  | 12,350      |  | 11,451      |  | 5,555       |  |             |  | 29,356     
|Shipments ('000 ST)                          |  | 13,614      |  | 12,623      |  | 6,123       |  |             |  | 32,360     
|                                            
|                                            
|Employees                                    |  | 25,300      |  | 125,900     |  | 69,400      |  |             |  | 220,600    

|*  | First quarter 2006 figures have been reclassed                                                                                                                                                        
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|** | EBITDA is income before tax and minority interest plus interest plus depreciation                                                                                                                     
|•  | Shipment numbers include intercompany shipments.                                                                                                                                                      
|•  | Sales as per statement of income above, includes other non-steel product sales (rawmaterials etc) and other sales (non-product). When computing average selling prices onlysteel sales are considered.
|•  | Sales and cost of sales include shipping and handling fees as per EITF Issue No. 00-10.                                                                                                               

Page 20 of 24

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Appendix 4MITTAL STEEL COMPANY N.V. CONSOLIDATED FINANCIAL & OTHER INFORMATION (UNDER IFRS)MITTAL STEEL COMPANY N.V. CONSOLIDATED BALANCE SHEETS

Balance sheet

|                                                        |  |            
|------------------------------------------------------- |  | -----------
|                                                        |  |            
|                                                        |  | June 30,   
|In millions of US dollars                               |  | 2006       
|                                                        |  | (Unaudited)
|ASSETS                                                  |  |            
|Current Assets                                          |  |            
|Cash and cash equivalents                               |  | $ 2,121    
|Restricted cash                                         |  | 1,054      
|Short-term investments                                  |  | 14         
|Trade accounts receivable  net                         |  | 2,895      
|Inventories                                             |  | 5,849      
|Prepaid expenses and other current assets               |  | 1,010      
|                                                        |  |            
|Total Current Assets                                    |  | 12,943     
|                                                        |  |            
|Property, plant and equipment  net                     |  | 18,888     
|Investments in affiliates and joint ventures            |  | 1,170      
|Deferred tax assets                                     |  | 479        
|Goodwill and intangible assets                          |  | 1,751      
|Other assets                                            |  | 276        
|                                                        |  |            
|Total Assets                                            |  | 35,507     
|                                                        |  |            
|                                                       
|LIABILITIES AND SHAREHOLDERS EQUITY                    |  |            
|                                                       
|Current Liabilities                                     |  |            
|Payable to banks and current portion of                 |  | 169        
|long-term debt                                          |  |            
|Trade accounts payable                                  |  | 2,617      
|Accrued expenses and other current                      |  | 2,956      
|liabilities                                             |  |            
|                                                        |  |            
|Total Current Liabilities                               |  | 5,742      
|                                                        |  |            
|Long-term debt, net of current portion                  |  | 8,089      
|Deferred tax liabilities                                |  | 2,305      
|Deferred employee benefits                              |  | 1,195      
|Other long-term obligations                             |  | 1,335      
|                                                        |  |            
|Total Liabilities                                       |  | 18,666     
|                                                        |  |            
|Shareholders Equity                                    |  |            
|Common shares                                           |  | 60         
|Treasury stock                                          |  | (90)       
|Additional paid-in capital                              |  | 2,262      
|Retained earnings                                       |  | 11,735     
|Other reserves                                          |  | 579        
|                                                        |  |            
|Equity attributable to the equity holders of the parent |  | 14,546     
|Minority Interest                                       |  | 2,295      
|                                                        |  |            
|Total Equity                                            |  | 16,841     
|                                                        |  |            
|Total Liabilities and Shareholders Equity              |  | $35,507    
|                                                        |  |            

Page 21 of 24

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MITTAL STEEL COMPANY N.V. CONSOLIDATED FINANCIAL & OTHER INFORMATION (UNDER IFRS)MITTAL STEEL COMPANY N.V. CONSOLIDATED
STATEMENTS OF INCOME DATA & OTHERINFORMATION

|                                                   |  | Three Months Ended |  | Six Months Ended
|-------------------------------------------------- |  | ------------------ |  | ----------------
|                                                   |  |                    |  |                 
|In millions of US dollars, except shares, per      |  | June 30,           |  | March 31,       
|share and shipment data                            |  | 2006               |  | 2006            
|                                                   |  | (Unaudited)        |  | (Unaudited)     
|STATEMENTS OF INCOME DATA                          |  |                    |  |                 
|Sales                                              |  | $ 9,230            |  | $ 8,430         
|Costs and expenses:                                |  |                    |  |                 
|Cost of sales (exclusive of depreciation shown     |  | 7,318              |  | 6,849           
|separately)                                        |  |                    |  |                 
|Depreciation                                       |  | 342                |  | 357             
|Selling, general and administrative expenses       |  | 266                |  | 291             
|Other operating (income) expense - net             |  | (55)               |  | (19)            
|                                                   |  |                   
|                                                   |  | 7,871              |  | 7,478           
|Operating income                                   |  | 1,359              |  | 952             
|Operating margin                                   |  | 14.7%              |  | 11.3%           
|Other income (expense)  net                       |  | (6)                |  | 7               
|Income from equity method investments              |  | 13                 |  | 25              
|Financing costs:                                   |  |                    |  |                 
|Interest (expense)                                 |  | (150)              |  | (200)           
|Interest income                                    |  | 40                 |  | 20              
|Net gain (loss) from foreign exchange transactions |  | 90                 |  | 5               
|                                                   |  |                   
|                                                   |  | (20)               |  | (175)           
|Income before taxes and minority interest          |  | 1,346              |  | 809             
|Income tax expense:                                |  |                    |  |                 
|Current                                            |  | 281                |  | 151             
|Deferred                                           |  | 58                 |  | (34)            
|                                                   |  |                   
|                                                   |  | 339                |  | 117             
|                                                   |  |                   
|Income before minority interest                    |  | 1,007              |  | 692             
|Minority interest                                  |  | (110)              |  | (82)            
|                                                   |  |                   
|Net income                                         |  | $ 897              |  | $ 610           
|                                                   |  |                   
|Basic earnings per common share                    |  | $1.27              |  | $0.87           
|                                                   |  |                   
|Diluted earnings per common share                  |  | $1.27              |  | 0.86            
|                                                   |  |                   
|Weighted average common shares outstanding         |  | 705                |  | 704             
|(in millions)                                      |  |                    |  |                 
|Diluted weighted average common shares             |  | 706                |  | 706             
|outstanding (in millions)                          |  |                    |  |                 
|OTHER INFORMATION                                  |  |                    |  |                 
|Total shipments of steel products including        |  | 16,763             |  | 15,597          
|inter-company shipments (thousands of short        |  |                    |  |                 
|tons)                                              |  |                    |  |                 

Page 22 of 24

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MITTAL STEEL COMPANY N.V. CONSOLIDATED FINANCIAL & OTHER INFORMATION (UNDER IFRS)MITTAL STEEL COMPANY N.V. CONSOLIDATED STATEMENTS OFCASH FLOWS

|                                                   |  | Three       |  |                  |  |            
|-------------------------------------------------- |  | ----------- |  | ---------------- |  | -----------
|                                                   |  | Months      |  |                  |  |            
|                                                   |  | Ended       |  | Six Months Ended
|                                                   |  |            
|In millions of US dollars                          |  | June 30,    |  | June 30,         |  | June 30,   
|                                                   |  | 2006        |  | 2006             |  | 2005       
|                                                   |  | (Unaudited) |  | (Unaudited)      |  | (Unaudited)
|Operating activities:                              |  |            
|Net income                                         |  | $ 1,007     |  | $ 1,699          |  | $ 2,591    
|Adjustments to reconcile net income to net         |  |             |  |                  |  |            
|cash provided by operations:                       |  |             |  |                  |  |            
|Depreciation                                       |  | 342         |  | 699              |  | 485        
|Net accretion of purchased intangibles             |  | (101)       |  | (190)            |  | (42)       
|Net foreign exchange loss (gain)                   |  | 32          |  | 29               |  | (12)       
|Deferred income tax                                |  | 108         |  | 50               |  | 62         
|Income from equity method investment               |  | (31)        |  | (55)             |  | -          
|Distribution from equity method investments        |  | 13          |  | 25               |  | (24)       
|Loss (gain) on sale of property plant & equipment  |  | 14          |  | 16               |  | (15)       
|Other non cash operating activities (net)          |  | (1)         |  | (48)             |  | (153)      
|Changes in operating assets and liabilities, net   |  |             |  |                  |  |            
|of effects from acquisitions:                      |  |             |  |                  |  |            
|Trade accounts receivable                          |  | 2           |  | (542)            |  | 274        
|Short-term investments                             |  | -           |  | -                |  | (8)        
|Inventories                                        |  | (64)        |  | 260              |  | (105)      
|Prepaid expenses and other assets                  |  | 11          |  | (3)              |  | (228)      
|Trade accounts payable                             |  | 188         |  | 84               |  | (621)      
|Accrued expenses and other liabilities             |  | 148         |  | 18               |  | (124)      
|Deferred employee benefit costs                    |  | 51          |  | 65               |  | (132)      
|                                                   |  |            
|Net cash provided by operating activities          |  | 1,719       |  | 2,107            |  | 1,948      
|                                                   |  |            
|Investing activities:                              |  |             |  |                  |  |            
|Purchase of property, plant and equipment          |  | (348)       |  | (611)            |  | (460)      
|Proceeds from sale of assets and investments       |  | 15          |  | 19               |  | 29         
|including affiliates and joint ventures            |  |             |  |                  |  |            
|Acquisition of net assets of subsidiaries, net     |  | (2)         |  | (34)             |  | (1,306)    
|of cash acquired                                   |  |             |  |                  |  |            
|Investments in affiliates and joint ventures - net |  | 3           |  | 4                |  | 22         
|Restricted cash                                    |  | (969)       |  | (954)            |  | (542)      
|Other investing activities (net)                   |  | 11          |  | 8                |  | (1)        
|                                                   |  |            
|Net cash used in investing activities              |  | (1,290)     |  | (1,568)          |  | (2,258)    
|                                                   |  |            
|Financing activities:                              |  |             |  |                  |  |            
|Proceeds from payable to banks                     |  | 33          |  | 46               |  | 1,344      
|Proceeds from long-term debt                       |  | 4,183       |  | 4,362            |  | 3,099      
|Debt issuance cost                                 |  | (57)        |  | (57)             |  | (10)       
|Payments of payable to banks                       |  | (108)       |  | (128)            |  | (1,215)    
|Payments of long-term debt                         |  | (4,222)     |  | (4,387)          |  | (1,324)    
|                                                  

---

|Purchase of treasury stock                           |  | -      | 1      | -      
|---------------------------------------------------- |  | ------ | ------ | -------
|Sale of treasury stock for stock option              |  | 3      | 1      | 6      
|exercised                                            |  |        |        |        
|Dividends paid (includes $48 of dividend paid        |  | (105)  | (241)  | (1,801)
|to minority shareholders during the first            |  |        |        |        
|quarter 2006; $nil for second quarter 2005           |  |        |        |        
|and $150 for the first quarter 2005)                 |  |        |        |        
|                                                    
|Other financing activities (net)                     |  | -      | -      | (18)   
|                                                     |  |       
|Net cash provided by (used in) financing activities  |  | (273)  | (403)  | 81     
|                                                     |  |       
|Net increase (decrease) in cash and cash equivalents |  | 156    | 136    | (229)  
|                                                     |  |       
|Effect of exchange rate changes on cash              |  | (86)   | (50)   | (217)  
|                                                     |  |       
|Cash and cash equivalents:                           |  |        |        |        
|At the beginning of the period                       |  | 2,051  | 2,035  | 2,495  
|                                                     |  |       
|At the end of the period                             |  | $2,121 | $2,121 | $2,049 
|                                                     |  |       

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