Izisetshenziswa zokuhlunga ezidonsela phansi zisetshenziswa kabanzi ekukhiqizweni ukuze zihluke ithusi, isiliva, tin, tungsten, tantalum, niobium, titanium, zirnonium, ama-chromium placers.
Okuphakathi okusetshenziswe ngaphakathi Umshini we-jig ungaba ngamanzi, futhi lapho amanzi esetshenziswa njengendlela yokuhlunga, ibizwa ngokuthi i-hydraulic jiggic jiggic.our jig ukugxila ifakwe ukugeleza kwamanzi okudonswayo, okuthuthukisa ukuhlukahluka kokusetshenziswa kwezicelo ezahlukahlukene.