Arch Coal (ACI)

Item 7.01 Regulation FD Disclosure.

On May 27, 2009, Arch Coal, Inc. issued a press release announcing that it had received a request for additional information from the Federal Trade Commission in connection with its planned acquisition of the Jacobs Ranch mine from Rio Tinto. A copy of the press release is attached hereto as Exhibit 99.1.

Item 7.01 Regulation FD Disclosure.

On March 9, 2009, Arch Coal, Inc. issued a press release announcing that it has agreed to purchase Rio Tinto’s Jacobs Ranch mine in the Powder River Basin of Wyoming. A copy of the press release is attached hereto as exhibit 99.1.

Item 7.01 Regulation FD Disclosure.

On February 9, 2009, Arch Coal, Inc. issued a press release announcing that it has agreed to purchase Rio Tinto’s Jacobs Ranch mine in the Powder River Basin of Wyoming. A copy of the press release is attached hereto as exhibit 99.1.

Item 7.01 Regulation FD Disclosure.

On October 1, 2007, Arch Coal, Inc. issued a press release announcing the acquisition of certain coal reserves and surface property in the Illinois Basin from International Coal Group. A copy of the press release is attached hereto as exhibit 99.1.

Item 7.01 Regulation FD Disclosure.

On June 20, 2007, Arch Coal, Inc. issued a press release announcing the sale of its Mingo Logan-Ben Creek mining complex. A copy of the press release is attached hereto as exhibit 99.1.

Item 7.01 Regulation FD Disclosure.

On December 11, 2006, the Company issued a press release announcing the election described above. A copy of the press release is furnished as Exhibit 99.1 hereto and is hereby incorporated by reference.

Item 7.01 Regulation FD Disclosure.

On September 21, 2006, Arch Coal, Inc. announced that its board of directors has approved a share repurchase program pursuant to which the company may acquire up to 14 million shares of its common stock.

A copy of the press release announcing the share repurchase program is attached hereto as Exhibit 99.1 and is hereby incorporated by reference.

Item 7.01 Regulation FD Disclosure.

On August 24, 2006, Arch Coal, Inc. announced that it has acquired an interest in DKRW Advanced Fuels. A copy of the press release announcing the transaction is attached hereto as Exhibit 99.1 and is hereby incorporated by reference.

Item 7.01 Regulation FD Disclosure.

On August 2, 2006, Arch Coal, Inc. announced that it had acquired an interest in Knight Hawk Coal. A copy of the press release announcing the transaction is attached hereto as Exhibit 99.1 and is hereby incorporated by reference.

Item 7.01 Regulation FD Disclosure.

On July 27, 2006, the Company issued a press release announcing the changes described above. A copy of the press release is furnished as Exhibit 99.1 hereto and is hereby incorporated by reference.

Item 7.01 Regulation FD Disclosure.

On May 19, 2006, Arch Coal, Inc. ("Arch") issued a press release announcing the adoption by Steven F. Leer, its Chairman and Chief Executive Officer, of a plan to sell a portion of the Arch common stock and stock options beneficially owned by him pursuant to Rule 10b5-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). A copy of the press release is furnished with this report as Exhibit 99.1 and incorporated by reference herein.

In accordance with General Instruction B.2 of Form 8-K, the information contained in Item 7.01 and the exhibits attached to this Current Report shall not be deemed "filed" for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.