ST. LOUIS (Oct. 27, 2011) - The board of directors of Arch Coal, Inc. (NYSE:ACI) today declared a quarterly cash dividend of $0.11 per share on the company's common stock.  The dividend is payable December 15, 2011 to shareholders of record on December 1, 2011.

U.S.-based Arch Coal is a top five global coal producer and marketer, with 179 million tons of coal sold pro forma in 2010.  Arch is the most diversified American coal company, with mining complexes across every major U.S. coal supply basin.  Arch's core business is supplying cleaner-burning, low-sulfur thermal and metallurgical coal to power generators and steel manufacturers on four continents.  In 2010, Arch set new company records in safety performance, environmental compliance and revenue generation.