SALT LAKE CITY, April 30, 2013 /PRNewswire/ -- Arch Coal, Inc. (NYSE:ACI) today announced that Canyon Fuel Company's Skyline and Sufco mines have each earned state recognition with a 2013 Earth Day Award for exhibiting outstanding environmental efforts in Utah. (Logo: http://photos.prnewswire.com/prnh/20120727/CG47668LOGO) The Utah Board of Oil, Gas and Mining (BDOGM) made the selection, and Chairman James Jensen presented the two awards to Skyline and Sufco mines on April 24. "Environmental responsibility is a core value at Arch," said Gene DiClaudio, president of Arch Western Bituminous Group. "We're honored to be recognized by the state for environmental excellence twice in 2013." The 250 employees of Skyline mine were recognized for their outstanding efforts to mitigate the mine's ventilation facility in Winter Quarters Canyon. BDOGM's Jensen said during the ceremony that Skyline mine "went the extra mile" to voluntarily produce a booklet on the historic Winter Quarters Canyon to preserve the rich mining history of the area. This is the second consecutive Earth Day award for Skyline mine. Since 2000, Skyline has been honored with eight Earth Day awards. Skyline's leading environmental performance includes a perfect compliance rate for six consecutive years. The 375 employees of Sufco mine earned high honors for "environmental improvement," according to the BDOGM. Sufco voluntarily developed gravity-fed pipelines to distribute scarce water resources for livestock and wildlife. Sufco has maintained a perfect environmental compliance rate since 2006. Sufco has been honored with five Utah Earth Day awards since 2000. U.S.-based Arch Coal, Inc. is one of the world's top coal producers for the global steel and power generation industries, serving customers in 25 countries on five continents. Arch Coal's Canyon Fuel Company is Utah's largest coal producer. Its network of mining complexes is the most diversified in the United States, spanning every major coal basin in the nation. The company controls a 5.5-billion-ton reserve base of high-quality metallurgical and thermal coals, with access to all major railroads, inland waterways and a growing number of seaborne trade channels. For more information, visit www.archcoal.com. SOURCE Arch Coal, Inc.