Arch Coal Inc announced that Skyline mine has earned top honors for underground mine safety among an 8 state region for a fourth consecutive year.

The Rocky Mountain Coal Mining Institute awarded the employees of Skyline mine with the 2010 Safety Award for underground mines due to an outstanding and ongoing safety performance achieved during calendar year 2009.

Mr John W Eaves president & COO of Arch Coal said that "This ongoing safety performance is proof positive of the dedication of the men and women of Skyline. Day in and day out they live by their safety values and for this they can be very proud."

Canyon Fuel Company is a wholly owned subsidiary of Arch Coal Inc. Canyon Fuel's Skyline mine is located near Helper and employs more than 175 people. Skyline sold a total of 10 million tonnes of coal during the four year period from 2006 to 2009.