NACCO Industries, Inc.

Hallador Energy Company focuses on extracting steam coal from its operations within Indiana, primarily supplying this fuel to the electric power generation sector. The company's mining assets include the subterranean Oaktown Mine 1 and Oaktown Mine 2, both situated in Oaktown, Indiana, alongside the Ace in the Hole mine, located near Clay City, Indiana. In addition to its coal activities, Hallador Energy also conducts natural gas exploration throughout Indiana. The firm was established in 1949 and its corporate headquarters are located in Terre Haute, Indiana.

Natural Resource Partners L.P. (NRP) is engaged in the ownership, management, and leasing of a diverse portfolio of mineral assets across the United States. The company's operations are structured into two primary segments: Mineral Rights and Soda Ash. Its holdings encompass interests in various natural resources, including coal, soda ash, and trona. Key coal reserves are strategically located in the Appalachian, Illinois, and Northern Powder River Basins, while industrial minerals and aggregates are distributed throughout the U.S. Oil and gas properties are situated in Louisiana, and timber assets are found in West Virginia. Notably, the firm's trona ore mining and soda ash refining facilities are located in Wyoming's Green River Basin. A core aspect of its business model involves leasing out a portion of these reserves to generate royalty payments. Additionally, NRP owns and operates crucial transportation and processing infrastructure linked to its coal properties. Incorporated in 2002, Natural Resource Partners L.P. is headquartered in Houston, Texas, with NRP (GP) LP serving as its general partner.

North America Lithium Corp. (NALG) is primarily involved in the exploration and discovery of lithium deposits. Its most significant venture entails the revitalization of the Midnight Owl Mine, situated approximately 13 miles east of Wickenburg, Arizona. The company, formerly identified as BrightRock Gold Corp., officially changed its name to North America Lithium Corp. in August 2025. The corporate headquarters are established in Gurnee, Illinois.

Ramaco Resources, Inc. primarily focuses on the mining and commercialization of metallurgical coal. The company possesses a substantial portfolio of development properties, including the Elk Creek project in southern West Virginia, which spans approximately 20,200 acres of controlled mineral and incorporates 16 distinct coal seams. Additionally, its holdings comprise the Berwind property, an approximately 41,300-acre site of controlled mineral with Squire Jim seam deposits, located on the border between West Virginia and Virginia. Further assets include the Knox Creek property, a vast 62,100-acre controlled mineral tract in Virginia, and the RAM Mine property, encompassing around 1,570 controlled acres in southwestern Pennsylvania. Ramaco provides its products to blast furnace steel manufacturers and coke production facilities throughout the United States, as well as to international consumers of metallurgical coal. The enterprise was established in 2015 and has its corporate headquarters in Lexington, Kentucky.

American Resources Corporation focuses on the entire supply chain for metallurgical coal, from its initial extraction and refinement to its transportation, distribution, and final sale, primarily serving the steel manufacturing sector. The company also supplies other essential raw materials and offers specialized coal for pulverized coal injection (PCI) applications. Its operational footprint includes facilities in Kentucky's Pike, Knott, and Letcher Counties, as well as Wyoming County, West Virginia. Established in 2006, American Resources Corporation is based in Fishers, Indiana.

Contango Ore, Inc. operates as an exploration-phase enterprise, primarily dedicated to prospecting for gold and other associated minerals across the United States. Its discovery efforts also extend to identifying deposits of copper and silver. Through its various subsidiaries, the company has secured substantial land access for its exploration and development activities. This includes the lease of approximately 675,000 acres from the Tetlin Tribal Council, as well as around 13,000 State of Alaska mining claims. Additionally, Contango Ore holds full mineral rights to an estimated 200,000 acres of State of Alaska mining claims situated north and northwest of the Tetlin Lease. The company's portfolio also features an interest in the Shamrock property, which encompasses 361 Alaska state mining claims spanning approximately 52,640 acres. Contango Ore, Inc. was founded in 2009 and maintains its corporate headquarters in Houston, Texas.