A na-eji ngwa ọrụ ndọda, ọla ọcha, na-edobe ọla ọcha, ọla ọcha, na titanium, ndị na-etinye akwụkwọ ma ọ bụ nke na-eyi egwu.
Ọkara eji Jig igwe nwere ike ịbụ mmiri, ma mgbe mmiri na-eji ya eme ihe, a na-akpọ ya hydraulic jigging na-agba mmiri mmiri na-asọ, nke na-eme ka nkewa dị n'ọtụtụ ngwa.