MLM vs TECK

Martin Marietta Materials Inc.

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 used in the infrastructure projects, and nonresidential and residential construction markets, as well as in the railroad, agricultural, utility, and environmental industries. The company also manufactures and markets magnesia-based chemical products for the industrial, agricultural, and environmental applications; and dolomitic lime primarily for customers in the steel and mining industries. 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.

Teck Resources Ltd

Teck Resources Limited engages in exploring for, acquiring, developing, and producing natural resources in Asia, Europe, and North America. It operates through Steelmaking Coal, Copper, Zinc, and Energy segments. The company's principal products include steelmaking coal; copper concentrates and refined copper cathodes; refined zinc and zinc concentrates; energy products, such as bitumen; and lead and molybdenum concentrates. It also produces gold, silver, germanium, indium, and cadmium, as well as chemicals, industrial products, and fertilizers. In addition, the company holds interest in Frontier oil sands projects in the Athabasca region of Alberta; and owns interests in exploration and development projects in Australia, Chile, Ireland, Mexico, Peru, Turkey, and the United States. The company was formerly known as Teck Cominco Limited and changed its name to Teck Resources Limited in April 2009. Teck Resources Limited was founded in 1913 and is headquartered in Vancouver, Canada.