Arch Coal Announces Required Offer to Repurchase 9.00% Convertible Senior Notes Due 2012 of its Subsidiary International Coal Group

Arch Coal, Inc. ACI announced today that, pursuant to the terms and conditions of the Indenture governing the 9.00% Convertible Senior Notes due 2012 of International Coal Group, Inc. ("ICG"), a wholly owned subsidiary of Arch, ICG will offer to repurchase the Notes, subject to the terms and conditions of ICG's Notice of Fundamental Change and Offer to Repurchase, dated June 13, 2011, the Indenture and the Notes.