Peabody and ArcelorMittal urge all Macarthur shareholders to accept the compelling offer to receive a substantial premium for their investment.  The bidder's statement of PEAMCoal Pty Ltd, a company owned by Peabody and ArcelorMittal, is being sent to Macarthur shareholders today. 

Under the offer, Macarthur shareholders will be offered A$15.50 cash per share, valuing the equity in Macarthur at approximately A$4.7 billion.  Macarthur shareholders will also be entitled to retain any final dividend declared by Macarthur in respect of the financial year ended June 30, 2011, up to an amount of 16 cents per share, without reducing the offer price.  This represents a total value of A$15.66 cash per share.

"Macarthur shareholders now have a clear opportunity to accept the PEAMCoal offer at a price that gives full credit to the state of Macarthur's current operations and development projects,"  said Peabody Energy Chairman and Chief Executive Officer Gregory H. Boyce.

Aditya Mittal, CFO and Member of the Group Management Board at ArcelorMittal said, "We feel this is a compelling offer which embodies value and certainty for Macarthur shareholders."

The total value to be received by Macarthur shareholders of up to A$15.66 per share represents a substantial premium of:

The offer is scheduled to close on September 20, 2011 unless extended.

Macarthur shareholder seeking further information regarding the offer should contact PEAMCoal's Offer Information Line on 1800 992 039 (for callers within Australia) or +61 2 8280 7692 (for callers outside Australia).

Peabody Energy Forward Looking Statement

Certain statements in this press release are forward-looking as defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on numerous assumptions that the company believes are reasonable, but they are open to a wide range of uncertainties and business risks that may cause actual results to differ materially from expectations. These factors are difficult to accurately predict and may be beyond the company's control. The company does not undertake to update its forward-looking statements. Factors that could affect results include those described in this press release as well as risks detailed in the company's reports filed with the Securities and Exchange Commission.

ArcelorMittal Forward Looking Statement

This document contains forward-looking information and statements about ArcelorMittal and its subsidiaries. Forward-looking statements may be identified by the words "will," "believe," "expect" or similar expressions. Although ArcelorMittal's management believes that the expectations reflected in such forward-looking statements are reasonable, investors and holders of ArcelorMittal'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 ArcelorMittal, 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 Luxembourg Stock Market Authority for the Financial Markets (Commission de Surveillance du Secteur Financier) and the United States Securities and Exchange Commission (the "SEC") made or to be made by ArcelorMittal, including ArcelorMittal's Annual Report on Form 20-F for the year ended 31 December, 2010 filed with the SEC. ArcelorMittal undertakes no obligation to publicly update its forward-looking statements, whether as a result of new information, future events or otherwise.

About Macarthur Coal

Macarthur Coal is a leading producer of low-volatile PCI metallurgical coal with production and development assets in the Bowen Basin, Australia, including the Coppabella and Moorvale Joint Venture, Middlemount and Codrilla. It holds total coal reserves of 270 million tonnes and total resources of approximately 2.3 billion tonnes.

About Peabody Energy

Peabody Energy is the world's largest private-sector coal company and a global leader in clean coal solutions. With 2010 sales of 246 million tons and nearly $7 billion in revenues, Peabody Energy fuels 10% of U.S. power and 2% of worldwide electricity. For more information about Peabody Energy visit: www.peabodyenergy.com. Contact: Vic Svec (+1 314 342-7768)