ST. LOUIS, July 8, 2011 -- Arch Coal, Inc. (NYSE: ACI) will discuss its second quarter 2011 financial results and new full-year 2011 earnings guidance in a conference call that will be broadcast live over the Internet on Friday, July 29 at 11:00 a.m. E.D.T. Participating on the call will be Arch's Chairman and Chief Executive Officer Steven F. Leer, President and Chief Operating Officer John W. Eaves, and Senior Vice President and Chief Financial Officer John T. Drexler.

The webcast will be accessible via the "investor" section of the Arch Coal website at http://investor.archcoal.com/. Following the live event, a replay and podcast download will be available on the site for approximately one month.

Arch Coal's second quarter earnings release will be distributed via PR Newswire before the market opens on Friday, July 29, and will be posted to the company's website at that time.

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 24 mining complexes across every major U.S. coal supply basin. Its core business is supplying cleaner-burning, low-sulfur thermal and metallurgical coal to power generators and steel manufacturers on four continents.