• Powell Mountain Energy, LLC
• Buchanan Energy Company, LLC
• Callaway Land & Reserves, LLC
• Cobra Natural Resources, LLC
• Coral Energy Services, LLC
• Dickenson-Russell Land & Reserves, LLC
• Enterprise Land & Reserves, LLC
• White Flame Energy, Inc.
• Virginia Energy Company, LLC
• Twin Star Mining, Inc.
• Premium Energy, LLC
• Palladian Lime, LLC
• Axiom Excavating & Grading Services, LLC
• Nicewonder Contracting, Inc.
• Arch Development, LLC
• Rhino Resource Partners LP
• Otter Creek Coal, LLC
• Cloud Peak Energy Resources LLC
• CLOUD PEAK ENERGY SERVICES Co
• Cloud Peak Energy Finance Corp.
• Caballo Rojo LLC
• Caballo Rojo Holdings LLC
• Antelope Coal LLC
• Prospect Land & Development LLC
• Northern Coal Transportation LLC
• Western Minerals LLC
• Spring Creek Coal LLC
• Sequatchie Valley Coal Corp
• Resource Development LLC
• Cordero Mining Holdings LLC
• Cordero Mining LLC
• Kennecott Coal Sales LLC
• Nerco LLC
• Nerco Coal LLC
• Nerco Coal Sales LLC
• Alpha Australia, LLC
• Alpha Australia Services, LLC
• Alpha Sub Three, LLC
• Alpha Sub Two, LLC
• Jay Creek Holding, LLC
• Mountain Merger Sub, Inc.
• Alpha India, LLC
• Alpha Natural Resources International, LLC
• Alpha Sub Five, LLC
• Alpha Sub Four, LLC
• Alpha Sub One, LLC
• WCC Land Holding Company, Inc.
• Westmoreland Power, Inc.
• Westmoreland Partners
• Westmoreland - North Carolina Power L.L.C.

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