ST. LOUIS (May 27, 2008) — Arch Coal, Inc. (NYSE:ACI) today announced that its Chairman and Chief Executive Officer, Steven F. Leer, will speak at the JP Morgan 3rd Annual Basics and Industrials Conference in New York City on Tuesday, June 3, 2008.

Interested investors may access a live audio webcast of the presentation at 2:15 p.m. E.D.T. on June 3 at Arch Coal's Web site at http://investor.archcoal.com/events.cfm. A replay of the webcast also will be available at the same URL for 30 days.

St. Louis-based Arch Coal is one of the nation's largest coal producers. The company's core business is providing U.S. power generators with cleaner-burning, low-sulfur coal for electric generation. Through its national network of mines, Arch supplies the fuel for approximately 6 percent of the electricity generated in the United States.