Martin Marietta Materials, Inc. MLM

Martin Marietta Materials, Inc., incorporated on November 12, 1993, is a supplier of aggregates products (crushed stone, sand, and gravel) used for the construction of infrastructure, nonresidential, and residential projects. Aggregates products are also used for railroad ballast and in agricultural, utility and environmental applications. The Company's Aggregates business operates through three segments: the Mid-America Group, Southeast Group and West Group. The Company's business is categorized into Aggregates Business, Cement Business and Magnesia Specialties Business. Its Cement business is reported through the Cement segment. Its Magnesia Specialties business manufactures and markets magnesia-based chemical products used in industrial, agricultural, and environmental applications, and dolomitic lime sold to customers in the steel industry. Its Aggregates business consists of mining, processing, and selling granite, limestone, sand and gravel. Its Aggregates business also includes aggregates-related downstream product lines (including its building materials, such as asphalt products, ready mixed concrete, and road paving construction services). It is also a supplier of cement, ready mixed concrete, and asphalt and paving services. Its Cement business produces Portland and specialty cements.

Aggregates Business

The Aggregates business mines, processes and sells granite, limestone, sand, gravel and other aggregates products. The Aggregates business also includes the operation of other construction materials businesses. These businesses include ready mixed concrete, and asphalt and road paving operations in Arkansas, Colorado, Louisiana, Texas and Wyoming. The Company supplies aggregates to the construction industry in the United States. As of December 31, 2016, the Company's Aggregates business shipped and delivered aggregates, asphalt products and ready mixed concrete from a network of approximately 300 quarries, underground mines, and distribution facilities, and approximately 150 ready mixed concrete plants. As of December 31, 2016, the Company operated 14 active underground mines, located in the Mid-America Group. The Company's transportation modes that have been developed with various rail carriers and via deep-water ships help in serving the customers in the southeastern and southwestern regions of the United States.

Cement Business

The Cement business produces Portland and specialty cements and is used in the production of cement is calcium carbonate in the form of limestone. As of December 31, 2016, the Company owned more than 600 million tons of limestone reserves adjacent to its two cement production plants in Texas. Cement is used in infrastructure projects, nonresidential and residential construction, and the railroad, agricultural, utility and environmental industries. As of December 31, 2016, these plants had a combined annual capacity of 4.5 million tons, as well as a permit that provided an 800,000-ton-expansion opportunity at the Midlothian plant. As of December 31, 2016, it also operated five cement distribution terminals in Texas. The Company's cement manufacturing facilities include kilns, crushers, pre-heaters/calciners, coolers, finish mills and other equipment used to process limestone and other raw materials into cement, as well as equipment used to extract and transport the limestone from the adjacent quarries. The limestone reserves used as a raw material for cement are located on property, owned by the Company, adjacent to each of the cement plants.

Magnesia Specialties Business

The Company manufactures and markets, through its Magnesia Specialties business, magnesia-based chemical products for industrial, agricultural and environmental applications, and dolomitic lime for use primarily in the steel industry. These chemical products have varying uses, including flame retardants, wastewater treatment, pulp and paper production and other environmental applications. The raw materials used in the Magnesia Specialties business are dolomitic limestone and alkali-rich brine.