St. Louis, Missouri – May 4, 2000 - The board of directors of Arch Coal, Inc. (NYSE:ACI) today declared a quarterly dividend of 5.75 cents per share on the company’s common stock. The dividend is payable June 15, 2000, to shareholders of record on May 15, 2000.

Arch Coal is the nation’s second largest coal producer, with subsidiary operations in West Virginia, Kentucky, Virginia, Wyoming, Colorado and Utah. Through these operations, Arch provides the fuel for approximately 6% of the electricity generated in the United States.