| | | | | |
| Name | Incorporation |
| Bellaire Corporation | Ohio |
| C&H Mining Company, Inc. | Alabama |
| Caddo Creek Redevelopment, LLC | Delaware |
| Caddo Creek Resources Company, LLC | Nevada |
| Catapult Mineral Partners, LLC | Nevada |
| Centennial Natural Resources, LLC | Nevada |
| Coyote Creek Mining Company, L.L.C. | Nevada |
| Crossbow Energy Partners, LLC | Nevada |
| Demery Resources Company, L.L.C. | Nevada |
| The Coteau Properties Company | Ohio |
| The Falkirk Mining Company | Ohio |
| GRENAC, LLC | Delaware (50%) |
| Liberty Fuels Company, L.L.C. | Nevada |
| Marshall Mine LLC | Delaware |
| Mississippi Lignite Mining Company | Texas |
| Mitigation Resources of North America, LLC | Nevada |
| Mitigate Alabama, LLC | Nevada |
| Mitigate Tennessee, LLC | Nevada |
| Mitigate Texas, LLC | Nevada |
| MitRes Services, LLC | Nevada |
| NACCO Energy Properties, LLC | Nevada |
| NACCO Natural Resources Corporation | Delaware |
| NACCO Properties, LLC | Nevada |
| NAM - AGL, LLC | Nevada |
| NAM - CMX, LLC | Nevada |
| NAM - Corkscrew, LLC | Nevada |
| NAM - CSA, LLC | Nevada |
| NAM - IND, LLC | Nevada |
| NAM - Little River, LLC | Nevada |
| NAM - MCA, LLC | Nevada |
| NAM - MDL, LLC | Nevada |
| NAM - Newberry, LLC | Nevada |
| NAM - PBA, LLC | Nevada |
| NAM - Perry, LLC | Nevada |
| NAM - QueenField, LLC | Nevada |
| NAM - Rosser, LLC | Nevada |
| NAM - SDI, LLC | Nevada |
| NAM - WFA, LLC | Nevada |
| NAM - WRQ, LLC | Nevada |
| NAM - 7D, LLC | Nevada |
| NoDak Energy Investments Corporation | Nevada |
| North American Coal Corporation India Private Limited | India |
| North American Coal, LLC | Nevada |
| North American Mining, LLC | Nevada |
| North American Coal Royalty Company | Delaware |
| Otter Creek Mining Company, LLC | Nevada |
| Powhatan Development LLC | Delaware (50%) |
| Red Hills Property Company, L.L.C. | Mississippi |
| ReGen Resources, LLC | Delaware |
| RRP I, LLC | Delaware |
| The Sabine Mining Company | Nevada |
| Sawtooth Mining, LLC | Nevada |
| Texas Mitigate Solutions, LLC | Delaware (20%) |
| Trident Technology Services Group, LLC | Nevada |
| Trifecta Red Hills I, LLC | Delaware |
| Trifecta Renewable Solutions, LLC | Delaware |