DUN-RITE SAND & GRAVEL CO., INC. is a mining & metals company based out of 573 EAST GRANT AVENUE, VINELAND, New Jersey, United States.

Whibco, Inc. was founded in 1841 and is America’s first producer of sand for use in the metal casting industry. Today, Whibco produces a wide variety of industrial sands and fine construction aggregates. Industrial markets include foundries, grout, roof shingle manufacturing, recreational sands, fillers, and most recently hydraulic fracturing sands (or “proppants”) to service the rapidly expanding Marcellus shale natural gas exploration and mining. Construction markets include concrete sands, gravels, septic sand, fill, and numerous other grades used in road and infrastructure construction. Whibco is owned and operated by the Sjogren family, and led by Wade and Walter Sjogren, with combined experience in the mining industry of almost 50 years. Whibco is proud of its strong track record of civic involvement, being good stewards of the environment, and being second to none in the on-time delivery of quality products.

Dyer Quarry Inc is a mining & metals company based out of 1275 Rock Hollow Rd, Birdsboro, Pennsylvania, United States.

Burton Construction is a full-service general contracting firm headquartered in Houston, Texas. We service much of the southwest and northeast including Texas, Arizona, California, Louisiana, New Mexico, Oklahoma, Virginia and Washington DC. The Burton portfolio of projects includes professional office and medical office buildings, industrial/manufacturing facilities, corporate headquarters, mixed-use environments, multi-family, hospitality, education and office interiors. The Burton Team is comprised of talented professionals with an expertise in project delivery including: Design-Build, Design Assist, and Competitive Bids. At the conception of each project, Burton will assign a highly skilled project manager to oversee, direct and manage the project through final completion. This approach ensures a single point-of-contact for the client and subcontractors facilitating open communication, creative problem-solving, and project manager accountability. Burton’s corporate philosophy is to build long-standing relationships with its clients and its colleagues in the design and construction community, which are based in trust, integrity, and partnership.

Harford Industrial Minerals, Inc.’s (“Harford Minerals”) purpose is to supply the construction industry with aggregate materials and reclamation services. We believe that the construction industry can be sustainable overtime with the right strategy and the application of innovation and technology into day-to-day operations. Located in Harford County, Maryland just a few minutes north of Baltimore City, we prioritize customer satisfaction, ease of access, reliability, and a diverse offering of materials (including innovative reuse of materials) to deliver value and help our customers perform on their jobs. Our mission is to be the premier reclamation facility, material supplier, and recycler of aggregates and sustainable materials in Maryland and the surrounding areas, including Washington D.C., Virginia, and Pennsylvania. By using our experience, dedication, innovation, and fairness to our customers, Harford Minerals continues to grow operations, expand our offerings, extend our reach, and work on some of the largest projects in the area. Even more, our research and development of innovative reuses of construction, demolition, and excavation (CDE) waste material makes our company unique because we can work with materials across their lifecycle and advance our sustainability goals. CDE waste is the unused or unusable material or refuse of construction activities on any development project (e.g., residential developments, commercial buildings, parking lots, bridges, and tunnels, among others). Some examples of CDE waste include: concrete, wood, asphalt, drywall, bricks, and metals. CDE waste recycling and reuse represents an opportunity to create sustainable solutions for the construction industry and future urban development. There is a limited amount of raw materials in the earth, so we have endeavored to develop a manufacturing process for repurposing CDE waste among other materials, including dredge material.

Founded in 1955, Rolling Rock Building Stone produces and distributes natural quarried stone. We offer more than two hundred premier building and landscaping stone products, and we distribute throughout North America. Our sales and production teams operate across 365 scenic acres at Rolling Rock's primary quarry in Oley Valley, PA. Visit us online at www.RollRock.com or in person at 40 Rolling Rock Road, Boyertown, PA 19512.