exv3w23

EXHIBIT -3.23

CERTIFICATE OF INCORPORATION

ISG WARREN INC.

The undersigned, a natural person, for the purpose of organizing a corporation for conducting the business and promoting the purposes hereinafter stated, under the provisions and subject to the requirements of the laws of the State of Delaware (particularly Chapter 1, Title 8 of the Delaware Code and the acts amendatory thereof and supplemental thereto, and known, identified and referred to as the “General Corporation Law of the State of Delaware”) hereby certifies that:

FIRST: The name of this Corporation (hereinafter called the “Corporation”) is ISG Warren Inc.

SECOND: The address, including street, number, city and county, of the registered office of the Corporation in the State of Delaware is 1209 Orange Street, City of Wilmington, County of New Castle (zip code 19801); and the name of the registered agent of the Corporation in the State of Delaware at such address is The Corporation Trust Company.

THIRD: The nature of the business and of the purposes to be conducted and promoted by the Corporation are to conduct any lawful business, to promote any lawful purpose, and to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of the State of Delaware.

FOURTH: The total number of shares of stock which the Corporation shall have authority to issue is one hundred (100) shares, all of which are of a par value of ($0.01) each, and all of which are of one class and are designated as Common Stock.

FIFTH: The name and mailing address of the incorporator are as follows: James A. Nash, c/o Stroock & Stroock & Lavan LLP, 180 Maiden Lane, New York, New York 10038.

SIXTH: Whenever a compromise or arrangement is proposed between this Corporation and its creditors or any class of them and/or between this Corporation and its stockholders or any class of them, any court of equitable jurisdiction within the State of Delaware may, on the application in a summary way of this Corporation or any creditor or stockholder thereof or on the application of any receiver or receivers appointed for this Corporation under the provisions of Section 291 of Title 8 of the Delaware Code or on the application of trustees in dissolution or of any receiver or receivers appointed for this Corporation under the provisions of Section 279 of Title 8 of the Delaware Code, order a meeting of the creditors or class of creditors, and/or of the stockholders or class of stockholders, of this Corporation, as the case may be, to be summoned in such manner as the said court directs. If a majority in number representing three-fourths in value of the creditors or class of creditors, and/or of the stockholders or class of stockholders, of this Corporation, as the case may be, agree to any compromise or arrangement and to any reorganization of this Corporation as a consequence of such compromise or arrangement, the said compromise or arrangement and the said reorganization shall, if sanctioned by the court to

which the said application has been made, be binding on all the creditors or class of creditors, and/or on all the stockholders or class of stockholders, of this Corporation, as the case may be, and also on this Corporation.

SEVENTH: The original By-Laws of the Corporation shall be adopted by the incorporator. Thereafter, the power to make, alter, or repeal the By-Laws, and to adopt any new By-Law, shall be vested in the Board of Directors.

EIGHTH: The personal liability of the directors of the corporation is hereby eliminated to the fullest extent permitted by the provisions of paragraph (7) of subsection (b) of Section 102 of the General Corporation Law of the State of Delaware, as the same may be amended and supplemented. Neither the amendment or repeal of this Article, nor the adoption of any provision of this Certificate of Incorporation inconsistent with this Article shall adversely affect any right or protection of a director of the Corporation existing at the time of such amendment, repeal or adoption.

NINTH: The Corporation shall, to the fullest extent permitted by Section 145 of the General Corporation Law of the State of Delaware, as the same may be amended and supplemented, or by any successor thereto, indemnify any and all persons whom it shall have power to indemnify under said section from and against any and all of the expenses, liabilities or other matters referred to in or covered by said section. The Corporation shall advance expenses to the fullest extent permitted by said section. Such right to indemnification and advancement of expenses shall continue as to a person who has ceased to be a director, officer, employee or agent and shall inure to the benefit of the heirs, executors and administrators of such a person. The indemnification and advancement of expenses provided for herein shall not be deemed exclusive of any other rights to which those seeking indemnification or advancement of expenses may be entitled under any By-Law, agreement, vote of stockholders or disinterested directors or otherwise.

Executed at New York, New York on March 21, 2002.


		/s/ James A. Nash
		James A. Nash, Incorporator

CERTIFICATE OF AMENDMENT
OF
CERTIFICATE OF INCORPORATION
OF
ISG WARREN INC.

ISG Warren Inc. (the “Corporation”), a corporation organized and existing under and by virtue of The General Corporation Law of the State of Delaware, as amended (the “DGCL”), DOES HEREBY CERTIFY:

FIRST: That the Board of Directors of the Corporation, by the unanimous written consent of its members, adopted resolutions proposing and declaring advisable the following amendment to the Certificate of Incorporation of the Corporation.

RESOLVED, that the Corporation’s Certificate of Incorporation be amended so that Article FIRST thereof shall read in its entirety as follows:

FIRST: The name of the Corporation is:

Mittal Steel USA — Warren Inc.

SECOND: That in lieu of a meeting and vote of stockholders, the sole stockholder has given its written consent to said amendment in accordance with the provisions of Section 228 of the DGCL.

THIRD: That the aforesaid amendment was duly adopted in accordance with the applicable provisions of Sections 242 and 228 of the DGCL.

IN WITNESS WHEREOF, the Corporation has caused this Certificate of Amendment to be executed by its duly authorized officer this 31 day of May, 2006.


ISG WARREN INC.
By:	/s/ Mark R. Jeske
	Name:	Marc R. Jeske
	Title:	Assistant Secretary

CERTIFICATE OF AMENDMENT
OF
CERTIFICATE OF INCORPORATION
OF
MITTAL STEEL USA — WARREN INC.

Mittal Steel USA — Warren Inc. (the “Corporation”), a corporation organized and existing under and by virtue of The General Corporation Law of the State of Delaware, as amended (the “DGCL”), DOES HEREBY CERTIFY:

RESOLVED, that the Corporation’s Certificate of Incorporation be amended so that Article FIRST thereof shall read in its entirety as follows:

FIRST: The name of the Corporation is:

ArcelorMittal Warren Inc.

SECOND: That in lieu of a meeting and vote of stockholders, the sole stockholder has given its written consent to said amendment in accordance with the provisions of Section 228 of the DGCL.

THIRD: That the aforesaid amendment was duly adopted in accordance with the applicable provisions of Sections 242 and 228 of the DGCL.

IN WITNESS WHEREOF, the Corporation has caused this Certificate of Amendment to be executed by its duly authorized officer this 17 day of September, 2007.


MITTAL STEEL USA — WARREN, INC.
By:	/s/ Marc Jeske
	Name:	Marc R. Jeske
	Title:	Assistant Secretary