SALT LAKE CITY (May 5, 2008) - Arch Coal, Inc. (NYSE:ACI) today announced that, for a third consecutive year, its Canyon Fuel Company's Skyline and Sufco mines earned a Utah Earth Day award for outstanding efforts in environmental stewardship.
 
The Utah Division of Oil, Gas and Mining (DOGM) board of directors presented Skyline and Sufco officials with the award for wildlife habitat improvements on April 23.
 
Skyline mine was honored for improvements in local fish habitat and migration.  To gain this recognition, employees of Skyline, with the oversight of regulatory agencies, modified several established beaver dams to enhance fish migration.  This effort allows fish to access an additional 1.5 miles of stream in Eccles Creek for spawning.
 
Sufco mine was recognized for the enhancement of sage grouse habitat to a half-acre area in Manti La-Sal National Forest.  Sufco employees fenced, reseeded and installed water soaker hoses to a mesic area with abundant insects and broad-leafed herbs, which created ideal nesting and feeding spots for the sage grouse.
 
"The employees of Skyline and Sufco mines have once again proven through their actions what it takes to be good stewards," said Arch Western Bituminous Group's President Gene DiClaudio.  "Acting as responsible corporate citizens is a core value at Arch Coal, and we're very proud of the example these Utah employees have set in promoting feather-and-fin habitat."
 
Arch Coal's Canyon Fuel Company is Utah's largest coal producer and a large, state employer with a workforce of approximately 800.  Sufco mine is located near Salina, Utah, and has approximately 360 employees.  Skyline mine is located near Scofield, Utah, and has more than 200 employees.  Through its national network of mines, Arch Coal provides the fuel for approximately 6 percent of the electricity generated in the United States.  The company maintains its corporate headquarters in St. Louis, Mo.