ST. LOUIS, July 10, 2012 --  Arch Coal, Inc. (NYSE:ACI) will discuss its second quarter 2012 financial results in a conference call that will be broadcast live over the Internet on Friday, July 27 at 11:00 a.m. E.D.T.  Participating on the call will be Arch's President and Chief Executive Officer John W. Eaves, Executive Vice President and Chief Operating Officer Paul A. Lang 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 27, and will be posted to the company's website at that time.

U.S.-based Arch Coal, Inc. is a top five global coal producer and marketer, with 157 million tons of coal sold in 2011.  Arch is the most diversified American coal company, with active 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 five continents.  In 2011, Arch continued to lead the U.S. coal industry in safety performance and environmental compliance among large, diversified producers.