Martin Marietta
Martin Marietta Materials is one of the largest producers of construction aggregates in the United States, supplying essential materials such as crushed stone, sand, and gravel for various construction projects. In 2023, the company sold 199 million tons of aggregates, primarily serving markets in Texas, Colorado, North Carolina, Georgia, and Florida. These aggregates are crucial for the construction of highways, infrastructure, and residential and commercial buildings. In addition to aggregates, Martin Marietta produces cement in Texas and incorporates its products into asphalt and ready-mixed concrete. The company also operates a magnesia specialties business, offering magnesia-based chemical products and dolomitic lime, further diversifying its portfolio.
Bluegrass Materials Company is an aggregates and concrete block producer headquartered in Jacksonville, FL. Bluegrass’s operations are located in Kentucky, South Carolina, Tennessee, Georgia and Maryland. The Kentucky operations are primarily located in and around the city of Bowling Green (Warren and Ohio Counties) and in rural areas in close approximation to the Kentucky-Virginia border (Lechter, Bell, and Harlan Counties). Bluegrass also operates three quarries in the Atlanta, Georgia area, as well as a granite quarry near Edgefield, South Carolina, serving the Aiken, South Carolina area; a limestone plant in Calhoun, Tennessee; and a sand plant in St. George, Georgia. The Maryland operations are primarily located throughout the greater Baltimore and Frederick/Western Maryland areas.
Rocky Mountain Premix is a privately held company engages in manufacturing of ready mix concrete.
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