Diggs S. Bishop

Produces and distributes construction aggregates and other construction materials

Functions as a College/University

The National Ready Mixed Concrete Association (NRMCA) is an industry organization that advances the ready mixed concrete sector through leadership in safety, environmental stewardship, operational excellence, and technological innovation. The non-profit company is based in Silver Spring, MD. It supports its members by providing advocacy at federal, state, and local levels, promoting legislation and building codes related to durability, resilience, and sustainability. NRMCA participates in technical committees, offers model legislative language on fire resistance, resilient construction incentives, and embodied carbon regulations, and provides programs such as plant and truck certification, professional development courses, and research at its accredited laboratory. The association acts as an Environmental Product Declaration (EPD) program operator, helping producers meet green building standards, and supports operational and safety excellence through benchmarking surveys, safety campaigns, and workforce development initiatives. NRMCA also organizes industry events, publishes technical materials, and sponsors trade shows.

Part of Vulcan Materials Co., Virginia Concrete Co. LLC is a publicly traded business that specializes in the production of construction aggregates, primarily crushed stone, sand, and gravel, as well as aggregates-based construction materials such as asphalt and ready-mixed concrete. The company, based in VA, has a long history dating back to its founding in 1919 as Birmingham Slag Company. It has expanded its operations to include nine operating divisions and a corporate office, and has acquired several other companies, including W.E. Graham & Sons. Additionally, the company has built a world-class chlor-alkali facility to expand its gravel operations.

The Virginia Ready-Mixed Concrete Association (VRMCA) is a nonprofit trade organization serving Virginia's ready mixed concrete industry. The private company is based in Charlottesville, VA. It connects and leads producers, suppliers, design professionals, and related stakeholders through education, advocacy, networking, and technical support. VRMCA promotes the use of ready mixed concrete across commercial, infrastructure, and residential projects and provides resources such as technical bulletins, industry practice materials, and a resource library. The association operates the NRMCA Concrete Design Center, offering design assistance and sustainability evaluations, and supports professional development through programs tailored to the concrete sector. VRMCA fosters collaboration through committees focused on environmental issues, safety, government relations, marketing, and technical matters, and advocates for members at state and federal levels. It provides educational seminars, training, certification opportunities, and hosts industry events, while supporting regional chapters that promote concrete products and education locally. The CEO of the company is Caren DeWitt Merrick.

The Maryland Ready Mix Concrete Association (MRMCA) is a trade organization representing the ready mix concrete industry. The private company is based in Frederick, MD. The association promotes concrete as a building material for various applications, including buildings, paving, infrastructure, and innovative uses such as countertops, skate parks, and 3D printing. MRMCA highlights concrete’s environmental benefits and collaborates with research entities to advance sustainable practices and carbon-neutral concrete. The association supports industry excellence through certifications, educational programs, workforce development, safety initiatives, advocacy, and networking events. It provides resources such as design assistance, continuing education, and member benefits including company promotion and access to industry news.