Martin Marietta Materials
Martin Marietta Materials, Inc., a natural resource-based building materials company, supplies aggregates and heavy-side building materials to the construction industry in the United States and internationally. It offers crushed stone, sand, and gravel products; ready mixed concrete and asphalt; paving products and services; and Portland and specialty cement for use in the infrastructure projects, and nonresidential and residential construction markets, as well as in the railroad, agricultural, utility, and environmental industries. The company also produces magnesia-based chemicals products, dolomitic lime primarily to customers for steel production and soil stabilization. Its chemical products are used in flame retardants, wastewater treatment, pulp and paper production, and other environmental applications. The company was founded in 1939 and is headquartered in Raleigh, North Carolina.
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NACCO Industries, Inc., together with its subsidiaries, engages in the natural resources business. The company operates through three segments: Coal Mining, North American Mining, and Minerals Management. The Coal Mining segment operates surface coal mines under long-term contracts with power generation companies. Coal is surface mined in North Dakota and Mississippi. The North American Mining segment provides value-added contract mining and other services for producers of aggregates, activated carbon, lithium, and other industrial minerals; and contract mining services for independently owned mines and quarries in Florida, Texas, Arkansas, Virginia, and Nebraska. The Minerals Management segment is involved in the leasing of its royalty and mineral interests to third-party exploration and production companies, and other mining companies, which grants them the rights to explore, develop, mine, produce, market, and sell gas, oil, and coal. The company was founded in 1913 and is headquartered in Cleveland, Ohio.
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