 Great Lakes Dredge Dock Corporation GLDD, the largest provider of dredging services in the United States, today reported financial results for the quarter ended March 31, 2020. Revenue was 217.7 million in the first quarter, a 25.1 million or 13.0 increase over the prior year quarter. Net income from continuing operations was 34.0 million, a 13.5 million increase over the prior year quarter. 