A powerful machine or barge for dredging up or removing earth and gathering objects from the bottom of a river. Also called a dredging machine.
to reveal or unearth by painstaking search
Built in 1934 by the US Army Corps of Engineers, these 1,300+ ton machines could move 80,000 cubic yards in just 24 hours. But as river passage became more stabilized, three of the four boats were retired and the Mitchell was left as the only dredge still in service. Although the Captain and his crew were still operating infrequent dredging missions, the William S. Mitchell’s retirement was also imminent.