Nga omukozi w’ebyuma ebisunsula eby’obugagga ebizzibwa obuggya, Ruijie awa eby’okugonjoola ebijjuvu —okwawula mu magineeti, okukebera, okutambuza, okumenya, n’okusunsula essikirizo —ebikoleddwa mu ngeri ey’okuteeka ebyuma ebikadde, okwokya wansi evvu (iba y’okuddamu okukuŋŋaanyizibwa, okulongoosa mu nkola y’okuzimba.
Ebyuma ebisunsula essikirizo bikozesebwa nnyo mu kukola okusunsula ekikomo, ffeeza, ebbaati, tungsten, tantalum, niobium, titanium, zirconium, primary ore ne chromium placers.
Medium ekozesebwa mu . Jig Machine esobola okuba amazzi, era amazzi bwe gakozesebwa nga sorting medium, kiyitibwa hydraulic jigging.Ebiyungo byaffe ebya jig bibaamu amazzi agakulukuta, ekitereeza obutuufu bw’okwawula mu mirimu egy’enjawulo.