Kiewit Corporation is an employee-owned Fortune 500 contractor based in Omaha, Nebraska. Privately held, it is one of the largest construction and engineering organizations in North America. Recent projects have included several bridge retrofittings in the San Francisco Bay Area, Interstate H-3 project in Hawaii, rebuilding the spillway at Oroville Dam, and building the world's largest geodesic dome at Henry Doorly Zoo in Omaha. Along with significant mining and off-shore operations, the company also contracts small grading (dirt moving) projects for residential or commercial development. - Source: Wikipedia
