Clayton R. Davis

The American Society of Civil Engineers, founded in 1852, is the oldest national engineering society in America. The non-profit company is based in Reston, VA and has subsidiaries in the United States. With over 150,000 members worldwide, the organization advocates for sustainable and resilient practices to maintain and modernize the nation's infrastructure. The company also works to increase investment in infrastructure and improve engineering knowledge and competency. The society's Civil Engineering Landmark Program recognizes historically significant civil engineering projects, structures, and sites.

National Defense Transportation Association operates as a non-political, non-profit educational association. The company was founded in 1944 and is headquartered in Alexandria, VA.

Landstar System Holdings, Inc. engages in providing integrated transportation management solutions. It provides services principally throughout the United States, Canada, and Mexico. The company is headquartered in Jacksonville, FL.

Appian Natural Resources Fund III LP invests in small and middle market companies across the globe. The fund targets companies operating in the fields of mining and metal sectors. It provides financing for buyout capital requirements and makes co-investments.