Arch Coal prices private offering of $2.0 billion of senior notes

Arch Coal, Inc. (NYSE: ACI) (“Arch”) today announced the pricing of its private offering of $1.0 billion principal amount of its 7.000% senior notes due 2019 and $1.0 billion principal amount of its 7.250% senior notes due 2021 (together, the “Senior Notes”), in each case at an issue price of 100% of the principal amount. Arch will pay interest on each series of the Senior Notes on June 15 and December 15 of each year, beginning on December 15, 2011. Each series of the Senior Notes will be guaranteed by Arch’s subsidiaries that guarantee indebtedness under Arch’s secured credit facility.

The offering is subject to market and other conditions, including the consummation of Arch’s proposed acquisition of International Coal Group, Inc. (“ICG”). Arch plans to use the net proceeds of the offering to partially fund Arch’s acquisition of ICG and related transactions, including the redemption, payment of cash resulting from conversion of, or other retirement of certain outstanding ICG indebtedness. The closing of the Senior Notes offering is expected to occur on June 14, 2011, subject to the conditions described above.

The Senior Notes will be offered only to qualified institutional buyers in reliance on Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”) and to non-U.S. persons in transactions outside the United States in reliance on Regulation S under the Securities Act.

The Senior Notes have not been registered under the Securities Act or any state securities laws and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements.

This press release is being issued pursuant to Rule 135c under the Securities Act, and is neither an offer to sell nor a solicitation of an offer to sell or a solicitation of an offer to buy any securities.

About Arch Coal

U.S.-based Arch Coal is one of the world’s largest coal producers, with more than 160 million tons of coal sold in 2010. Arch’s national network of mines supplies cleaner-burning, low-sulfur coal to customers on four continents, including U.S. and international power producers and steel manufacturers. In 2010, Arch achieved record revenues of $3.2 billion.