Martin Marietta

BioMason is a biotechnology start-up focused on the building and construction industry, founded in 2012 and headquartered in Research Triangle Park, North Carolina. The company specializes in the production of biological cement-based masonry materials using natural microorganisms and chemical processes. Its product offerings include concrete masonry tiles suitable for various applications, biocement for dust control, and solutions for soil stabilization. BioMason aims to innovate the construction sector by providing sustainable alternatives that reduce environmental impact and enhance the efficiency of building practices.

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 Materials & Asphalt, based in Colorado Springs, Colorado, specializes in the manufacture and supply of aggregate materials and asphalt. Established in 1977, the company provides a variety of products, including hot mix asphalt, decorative landscape rocks, premixed materials for construction, and various aggregates such as granite and river rocks. In addition to these offerings, Rocky Mountain Materials & Asphalt also supplies concrete sand and fill sand, and accepts broken concrete and asphalt for dumping. The company further extends its services to include snow removal for commercial properties.

Rocky Mountain Premix is a privately held company engages in manufacturing of ready mix concrete.

Texas Industries, Inc., based in Dallas, Texas, specializes in the manufacture and sale of heavy construction materials in the southwestern United States. Founded in 1946, the company operates through three primary segments: Cement, Aggregates, and Consumer Products. The Cement segment focuses on producing gray Portland cement and specialty cements, including masonry and oil well cements. Through its diverse offerings, Texas Industries plays a significant role in the construction materials market.