The US Army Corps of Engineers St. Louis District's Dredge Potter yakatanga svondo rapfuura kubva kuSt.
Kuita basa reDunhu rekuchengetedza gwara rakadzika-mamita mapfumbamwe, 300-mamita yakafara pamakiromita mazana matatu eRwizi rweMisissippi kubva kuSaverton, Mo., kuenda kuCairo, Ill., Muumbi anobatsira kuti kufamba kugoneke kuti zvikepe zvifambise kutengeserana kumusoro uye zasi kwerwizi.
Mukuwedzera, Dunhu reSt.
Yakavakwa muna 1932 panguva yeGreat Depression, iyo Dredge Potter ndiyo yekare Corps dredge uye yakatanga yakatangwa sechikepe chine simba rehutsi.
Muumbi wanhasi i "dustpan dredge" yakatumidzwa Brigadier General Charles Lewis Potter aive St. Louis District mukuru kubva 1910 kusvika 1912, uye Mutungamiriri weMississippi River Commission kubva 1920 kusvika 1928.
Duva rePotter rinocheka nzvimbo yakafara-mamita makumi matatu nembiri pazasi perwizi, ukuwo pombi yedredge ichiunza marara mukati nemupombi yekupinza uye kunze kune pombi inoyangarara kuti iiswe kunze kwegwara rekufambisa.
Iyo Dredge Potter inogona kufambisa 4,500 cubic mayadhi e sediment paawa.Mwaka wadarika, timu yedredger yakafambisa anopfuura 5.5M cubic mayadhi emarara.
Mwaka wakajairika wekudonha muSt. Louis District unotanga kubva munaChikunguru kusvika Zvita asi unogona kuchinja zvichienderana nemamiriro enzizi, akadaro USACE.