ABINGDON, Va., July 1 /PRNewswire-FirstCall/ -- Alpha Natural Resources, Inc. (NYSE: ANR) today announced that its 2.375% Convertible Senior Notes due 2015 (the 'Notes') are now convertible at the option of the holders and will remain convertible through September 30, 2008, the last trading day of the current fiscal quarter, as provided in the indenture governing the Notes.

The Notes became convertible because Alpha's common stock exceeded the conversion threshold price of $71.06 per share (130% of the applicable conversion price of $54.66 per share) for at least twenty trading days within the thirty consecutive trading days ending June 30, 2008.

As a result, during the conversion period July 1, 2008 through September 30, 2008 (inclusive), holders of the Notes may elect to convert some or all of their Notes.

Whether the Notes will be convertible at any time after September 30, 2008 will depend on the occurrence of events specified in the indenture, including the price of Alpha's common stock during the quarter ending on September 30, 2008 and subsequent quarters.

To convert interests in a global Note held through the Depository Trust Company ('DTC'), the holder must deliver to DTC the appropriate instruction form for conversion pursuant to DTC's conversion program.