Arch Coal is a United States coal mining and processing company. The company mines, processes, and markets bituminous and sub-bituminous coal with low sulfur content in the United States. Arch Coal is the second largest supplier of coal in the U.S[1] - second only to Peabody Energy[2]. Arch Coal claims to supply 12% of the domestic market[3]. Demand comes mainly from generators of electricity [4].
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