Arch Coal, Inc. (ACI), a leading U.S. producer of steam and metallurgical coal, with interests in Appalachia, the Powder River Basin and the Western Bituminous region, reported better than expected second quarter results this morning. Net income surged 200% year-over-year to $113.0 million, or 78 cents per share, on revenues of $785.1 million, a 31% increase over the same period. Analysts who cover the firm expected earnings of 64 cents per share on $737.1 million in revenues.