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28 Telescope LEGEND Vj MBMOittrict Boundary ui AUTHORIZED PROJECTS • Rivor and Harbor SUPERIOR LAKE ,CHEBOYGAN_ ^CHARLEVOIX ^DESCRIPTION OF DISTRICT This district includes the loket, rivers ond harbors along the east and vest coast of the State of Michigon.the northwest portion of the stote of Ohio and the northeast portion of the Stote of Indiono from SI Morys River on the north to Port Clinton Horbor on the southeost and SI-Joseph River on the southwest. LELANO TRAVERSE Cm HARBOR** WjKFQRll .tUONCTQH CLINTON Rll DETROIT. RIVER iQLEOO BOUNDARY OF DETROIT 01 ITBirT^ DETROIT. MICHIGAN DISTRICT INDEX MAP RIVER AND HARBOR WORKS Seal* of Milos Harbors dredged by Gov't. Hopper Dredges shown thus: ® CORR3 OF ENGINEERS , DETROIT DISTRICT aircraft. Credit was given to the HAINS* crew for downing two enemy planes. Even her name has an illustrious origin. Major General Peter Conover Hains had a long career as an Officer of the Corps of Engineers. He was graduated from the U. S. Military Academy in 1861, and at the time of his retirement was District Engineer at Norfolk, Virginia. He holds the destination of having been the only officer to see active service in the Civil Mar, Spanish American War, and World War I. Operation of the dredge is relatively easy to understand, although it cannot be considered simple. Dragheads, mounted amidship at either side are lowered to the bottom where they suck up silt. This is deposited in huge hoppers where the solid material sinks and the water runs over the side and overboard. Four of these hoppers have a total capacity of 221 cubic yards each. While these hoppers are being filled, careful watch is kept on the ship's level. When capacity is reached the dredge is moved off to a designated dump area where the hopper traps are opened and the load released. Wit ti the traps still opened, clean water is flushed through the hoppers, thoroughly cleaning them. In January of 1959, the HAINS was modified to enable it to pump out dredge material over-the-side through an 18 inch pipe. This application was first used during the winter of 1959 on the Calumet River, Illinois and again under adverse weather and physical conditions at Ontonagon, Michigan. This added feature provided a feasible method by which the HAINS can perform operations