Great Lakes Announces Appointment of Larry Dickerson as Board Chair OAK BROOK, Ill., Jan. 29, 2018 (GLOBE NEWSWIRE) — Great Lakes Dredge & Dock Corporation (the “Company” or “Great Lakes”) (NASDAQ:GLDD), the largest provider of dredging services in the United States and a major provider of environmental and remediation services, today announced that the Board of Directors has appointed Lawrence R. Dickerson