Arch Resources, Inc., formerly Arch Coal, Inc., is a producer of metallurgical products. The Company’s segments include Powder River Basin (PRB), Metallurgical and Other Thermal. PRB segment contains its primary thermal operations in Wyoming. The Metallurgical (MET) segment contains the Company’s metallurgical operations in West Virginia. Other Thermal segment contains its supplementary thermal operations in Colorado and Illinois. The PRB segment includes the Black Thunder and Coal Creek surface mining complex. The Metallurgical segment includes Mountain Laurel, Beckley, Leer South/Sentinel and Leer complexes. The Other Thermal segment includes the West Elk and Viper complexes.