We vanga vachigadzira misoro yekucheka uye kudonhedza mavhiri kwemakumi emakore zvichibva pane inoshanda ruzivo nemhando dzakawanda dzevhu uye midziyo yekudonha kubva kutenderera pasirese.Yedu yekucheka tekinoroji inotungamirwa neruzivo rwedu rwakakosha rwekuchera, kugadzira slurry uye kupfeka kuramba.Iko kusanganiswa kwezvinhu izvi ndiyo yakasarudzika hwaro hwekupa yakanakisa kucheka misoro uye dredging mavhiri munyika: