6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

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FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

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Dated June 30, 2010

Commission File Number: 333-146371

ARCELORMITTAL

(Translation of registrant’s name into English)

19 Avenue de la Liberté

L-2930 Luxembourg

Luxembourg

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  x                               Form 40-F o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): _____

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): _____

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes   o                                        No x

If “Yes” marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):  82-________

On June 30, 2010, ArcelorMittal issued the press release attached hereto as Exhibit 99.1 hereby incorporated by reference into this report on Form 6-K.

Exhibit List

Exhibit No.		Description
Exhibit 99.1	Press release dated June 30, 2010 announcing ArcelorMittal’s response to European Commission’s decision on pre-stressed steel case

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: June 30, 2010

By:	/s/ Henk Scheffer
	Name:	Henk Scheffer
	Title:	Company Secretary

Exhibit Index

Exhibit No.		Description
Exhibit 99.1	Press release dated June 30, 2010 announcing ArcelorMittal’s response to European Commission’s decision on pre-stressed steel case

EX-99.1

news release

ArcelorMittal response to European Commission’s Decision on Pre-Stressed Steel Case

Luxembourg, 30 June 2010 (16:00 CET) - ArcelorMittal notes the decision announced today by the European Commission concerning the investigation into alleged anti-competitive practices of European manufacturers of pre-stressed wire and strands steel products, including certain subsidiary companies of the ArcelorMittal Group. Initial review of the European Commission’s announcement suggests that the fines imposed on subsidiary companies of the Group amount to approximately 315 million euros.   

The Commission investigation has been pending since 2002 and the alleged anticompetitive practices that it has examined date back to a period over 25 years ago. ArcelorMittal operates a strong compliance program across all its subsidiaries to ensure that all business activity remains in accordance with the highest legal and ethical standards.

When it receives the full Commission decision, the Company will review the decision in detail and respond within the time limits provided. All options including appeal will be considered.

ArcelorMittal and its subsidiaries have cooperated fully with the Commission throughout the investigation.

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