arch coal, inc. (nyse:aci) is one of the largest coal producers and marketers in the world. we contribute roughly 14% of america’s coal supply. we are the most diversified american coal company with coal supply basins, with major mining complexes in wyoming, colorado, illinois, west virginia, kentucky, virginia and maryland. we’re proud stewards of safety and the environment, and have amassed dozens of national and state awards for excellence. we’re also a recognized leader in technology and innovation with business week’s web smart 50, cio 100 and informationweek 500. investments in research and development of clean coal and coal conversion technologies, such as coal to diesel fuel and coal to natural gas, are helping pave the way for greater independence in our energy future.